CN215401781U - High airtight type airlock and drying processing equipment - Google Patents

Abstract

The utility model relates to a high-airtight type air seal machinery, which comprises a valve shell, an impeller, a flow guide pipe and a sealing device. The outer circle sealing surface of the sealing device fixed on the impeller is turned, milled or ground, and the surface profile of the outer circle sealing surface of the sealing device meets the precision requirement of high airtight use for reducing a small gap between the sealing surface of the sealing device and the inner wall of the valve body. The smooth outer circle sealing surface of the sealing device is fully attached to the inner wall of the valve body, and the sealing area between the sealing device and the inner wall of the valve body is increased. The honeycomb duct dredges the different pressure of two feed bins that the both sides correspond about the impeller for balanced unanimous pressure, and the pressure between two feed bins that the impeller both sides are adjacent from top to bottom and the feed bin has been weakened, carries out dynamic seal by sealing device between impeller and valve body, the side cap, has improved the lock gas performance of airlock by a wide margin. A drying processing device adopts the matching use of a high airtight type air seal machine, and ensures that the drying processing device can carry out effective drying work.

Description

High airtight type airlock and drying processing equipment

Technical Field

The utility model relates to the field of drying processing equipment, in particular to a high-airtight type air seal machinery and drying processing equipment.

Background

The air seal machine is also called a wind seal machine, a discharge valve, an ash discharge valve and a star-shaped discharger; the main function of the air seal machine is to continuously input or discharge materials in the equipment in time, and simultaneously reduce the air entering the negative pressure equipment in the normal pressure environment or ensure the high pressure in the equipment to reduce the leakage in the normal pressure environment. The air seal machine is applied to equipment such as vacuum drying processing equipment, high-pressure superheated steam drying processing equipment, negative-pressure superheated steam drying processing equipment and the like which are arranged at high ends, because the inside of the drying processing equipment is in a high-pressure or negative-pressure state, a high-pressure difference state exists between the pressure at a feed inlet and the pressure at a discharge outlet of the air seal machine, and the high-pressure difference of the pressure between the bins adjacent to each other above and below the two sides of an impeller of the air seal machine has higher and higher requirements on high-air-tightness material conveying of the air seal machine.

The shape and structure of the sealing device adopted at present are mostly sealing strips or sealing blocks, when the impeller rotates in the valve body to convey materials or gas, a certain gap exists between the sealing device fixed on the impeller and the inner wall and the side cover of the valve body, and the size of the gap is an important factor for evaluating the gas locking performance. It has some problems: 1. the excircle sealing surface of the sealing device is a circular surface or a plane, the excircle sealing surface of the sealing device is only attached to the inner wall of the valve body in a small area, and the sealing effect is influenced due to the small sealing area. The sealing device is now fixed to the blades and the shroud of the impeller by gluing or by means of clamps or screws. For example, a sealing device coated with glue is adhesively fixed to the impeller: 2. because the glue is smeared in different thicknesses, the excircle sealing surface of the sealing device is uneven after the glue is solidified. 3. Under the action of external force during the adhesion of the sealing device, the sealing devices at different positions are stressed unevenly, and the sealing device after the glue is solidified is warped and concaved, so that the excircle sealing surface of the sealing device is uneven. 4. The sealing device is fixed by a fixture or a screw fixing method, and the sealing device at different positions on the impeller causes the outer circle sealing surface of the sealing device on the outer circle surface of the impeller to be concave-convex and unsmooth. 5. The impeller after the sealing device is fixed is not machined under the control of the precision requirements of cylindricity and surface profile. 6. The sealing surfaces of the sealing ring and the sealing strip are convex, so that the sealing area is reduced. 7. The cylindricity and the surface profile of the excircle sealing surface of the sealing device fixed on the impeller do not meet the precision requirement, a gap with different distances exists between the concave-convex unsmooth sealing surface on the excircle surface of the sealing device and the inner wall of the valve body, and the air locking performance of the air seal machinery is greatly reduced.

As is known, the cylindricity is an index for measuring the error of the shape of the excircle sealing surface of a sealing device on a cylindrical impeller, the surface profile of the excircle sealing surface of the sealing device on the cylindrical impeller refers to the variation condition of a measured actual profile relative to an ideal profile, and the surface profile of the excircle sealing surface of the sealing device on the impeller is an index for limiting the variation of the actual curved surface to the ideal curved surface and is the requirement for the shape accuracy of the curved surface.

The existing air seal machinery is complex in installation structure, the installation position of the flow guide pipe on the valve body is not easy to position, and the difficulty in production and manufacturing is high.

The air seal machine that dry processing equipment adopted in the existing market has a lot of problems, because the sealing device of air seal machine and a plurality of problems of the sealed face of laminating between the valve body inner wall little, wearing and tearing can not be solved, cause the air tightness of air seal machine that dry processing equipment used in the existing market poor, sealing device easily wears out, finally cause the air leakage big, influence dry processing equipment's dry machining efficiency. Therefore, it is necessary to design a high-airtight type air seal machine, the drying processing equipment and the tea making equipment are matched with the high-airtight type air seal machine for use, and the high-airtight type air seal machine can perform high-airtight feeding and discharging in high-pressure-difference environments inside and outside a processing bin of the drying processing equipment and the tea making equipment, so that the drying processing equipment and the tea making equipment can be guaranteed to perform effective product processing.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the defects of the existing air seal machinery, and the pressure difference of the pressure between the upper and lower adjacent bins at the two sides of the impeller and the bins is reduced by designing the flow guide pipe; and then the surface of the sealing device after installation and fixation is subjected to machining polishing treatment such as turning, milling or grinding through design, so that the sealing surface of the smooth sealing device is fully attached to the inner wall of the valve body, the gap between the sealing device and the inner wall of the valve body is reduced, the sealing area between the outer circle sealing surface of the sealing device and the inner wall of the valve body is increased, and the high-airtight type air seal is provided.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a high-air-tightness air seal machinery is composed of casing, vane wheel, flow guide tube and sealing unit.

The valve casing comprises a valve body, a side cover and a bearing. The bearing is installed in the central position of side cap, and two side caps are fixed on the both sides of valve body. The valve shell is provided with a feed inlet and a discharge outlet. The valve housing is a mature technology and the utility model is not described in detail.

The inner cavity of the valve body is turned, milled or ground, and the inner wall of the valve body is smooth. The valve housing is turned or milled against the side cover face of the impeller baffle, and the side cover face of the baffle against the impeller is flat and smooth.

The impeller comprises a blade plate, a baffle plate and a transmission shaft.

The impeller is arranged in the valve body. The transmission shaft of the impeller is supported by bearings on the side covers at two ends, one end of the transmission shaft is sealed in the side covers, the other end of the transmission shaft extends out of the side covers, and the transmission shaft is used for being connected with a power output shaft of a driving device. And starting the driving device, and driving the transmission shaft and the impeller to rotate to work and convey materials by the motor through the gearbox.

The processing and manufacturing of the impeller are mature technologies. The impeller is mostly integrally cast by metal, a mold is manufactured according to the design of the impeller, and the cast impeller is processed and manufactured. The impeller is also made of metal plates through welding processing.

The blade plate and the baffle plate are fixed on the transmission shaft, and the blade plate is fixed between the baffle plates on the two sides; two blades and two side baffles form a material bin. The number of the leaf plates is 6-8, and the number of the baffle plates is two; the number of the bins is 6-8. Or a proper number of bins are set according to the size of the air seal machine.

The sealing device is provided with a groove or is not provided with a groove; the impeller is fixed with a limit block or is not fixed with the limit block.

The limiting block is fixed on the impeller. The limiting blocks are fixed on the upper end faces of the blade plates, and 2-5 limiting blocks are installed on the blade plates. 3 ~ 8 stoppers are installed to the up end of baffle on.

The width of the limiting block is 1-5 mm, and the length is designed to be required according to different sizes of the blade plate and the baffle. The height is 0.3-3 mm, and the height of stopper is less than sealing device's thickness 0.2-1 mm. According to the size of the air seal machinery, the size and the installation number of the limiting blocks are not limited by the data, and the limiting blocks with proper size and fixed number can be set according to the sizes of the impellers of different air seal machinery.

The limiting block and the blade plate are of an integrated structure or are fixed into a whole; the limiting block and the baffle are of an integrated structure or fixed into a whole. The integrated structure is characterized in that a limiting block is designed when a processing die of the impeller is designed, and the limiting block is formed by machining the cast impeller through a machine tool; the fixed structure is that after the impeller is manufactured and processed, the limiting block is fixed on the impeller by gluing or welding and other methods.

When the limiting block and the impeller are of an integrated structure, the manufacturing material of the limiting block is the same as that of the impeller.

The limiting block and the impeller are fixed into a whole, the lower end of the limiting block and the blade plate and the baffle of the impeller are fixedly connected into a whole through gluing or welding, and the limiting block is made of metal, nylon or other suitable materials.

As is well known, the sealing surface of the sealing device and the inner wall of the valve body are dynamically sealed during the rotation of the impeller, and the friction force generated by the dynamic seal between the sealing device and the valve body can cause the displacement of the fixing surface of the sealing device and the falling off. The limiting block ensures that the sealing device in the rotating process of the impeller cannot displace, and the fixing firmness of the sealing device and the impeller is improved.

The sealing device is fixed on the upper end surface or the side surface of the blade plate of the impeller and the baffle plate and is provided with a groove. The shape and size of the groove are the same as those of the limiting block, the groove on the fixing surface of the sealing device covers the limiting block, and the limiting block is inserted into the groove of the sealing device.

The sealing device is fixed on the impeller, and the diameter of the outer circle of the sealing device which is not subjected to turn-milling or grinding is 1-8 mm larger than the inner diameter of the valve body.

The sealing device is a sealing plate type sealing device and a sealing ring type sealing device. The surface of the sealing device fixedly attached to the impeller is a fixed surface of the sealing device, and the surface of the sealing device attached to the inner wall of the valve body is a sealing surface of the sealing device. The sealing plate type sealing device is fixed on the upper end face of the blade plate and the side face of the baffle plate, and the sealing ring type sealing device is sleeved on the upper end faces of the baffle plates on the two sides.

The fixing and sealing means are well established technology and will not be described in detail in this application. The present invention is described as an example in which the sealing device is fixed by an adhesive method, and the sealing device may be fixed by other methods. The fixed surface of the sealing plate type sealing device and the upper end surface of the blade plate of the impeller are fixedly connected into a whole through gluing, and the fixed surface of the sealing plate type sealing device and the side surface of the baffle are fixedly connected into a whole through gluing; the fixing surface in the sealing ring type sealing device and the upper end surface of the baffle are fixedly connected into a whole through gluing.

The excircle diameter numerical value of the sealing device after turning, milling or grinding is larger than the inner diameter numerical value of the inner cavity of the valve body, and the excircle diameter numerical value of the sealing device after machining is set according to the size of the valve body of the air seal machinery.

1. The thickness of the sealing device fixed on the impeller is 0.5-5 mm, and the sealing surface of the sealing device is a flat sealing surface. The diameter of the outer circle of the sealing device on the impeller without turning or grinding is 1-8 mm larger than the inner diameter of the valve body, and the diameter of the outer circle of the sealing device on the impeller without turning or grinding comprises the diameter of the impeller and the thickness of the sealing device, wherein the thickness of the sealing device is 0.5-5 mm.

2. And (3) polishing the sealing device which is fixed on the impeller and has the original thickness of 0.5-5 mm by turning, milling or grinding to obtain the sealing device with the thickness of 0.3-3 mm. The outer circle surface of the sealing device which is larger than the inner diameter of the inner cavity of the valve body and is 1-8 mm is convenient to perform turning-milling or grinding polishing processing, so that the outer circle sealing surface of the sealing device fixed on the impeller is subjected to turning-milling or grinding polishing processing, and the surface profile of the outer circle of the sealing device after processing can meet the precision requirement of high airtight use, and the small gap between the sealing surface of the sealing device and the inner wall of the valve body is reduced.

3. The diameter of the outer circle of the sealing device 8 after turning and milling or grinding is larger than the inner diameter of the valve body 3 by 0.05-2 mm, and the diameter of the outer circle of the sealing device on the impeller after turning and milling or grinding comprises the diameter of the impeller and the thickness of the sealing device by 0.3-3 mm. The sealing device with the diameter of 0.05-2 mm larger than the inner diameter of the valve body enters the inner cavity of the valve body under the pressing and pushing action of external force, and the outer circle sealing surface of the sealing device is attached to the inner wall of the valve body.

The outer circle sealing surface of the sealing device on the impeller is smooth through turning and milling or grinding. And installing an impeller of the sealing device, and performing machining polishing treatment such as turning and milling or grinding on the outer circle sealing surface of the sealing device by using machining equipment on the impeller fixed with the sealing device.

Firstly, the surface profile of the excircle sealing surface of the sealing device after being processed by turning and milling or grinding machine achieves the precision requirement of reducing the small gap between the excircle sealing surface of the sealing device and the inner wall of the valve body. The outer circle sealing surface of the machined smooth sealing device is fully attached to the inner wall of the valve body, the sealing area between the sealing device and the inner wall of the valve body is increased, the size of a gap between the sealing surface of the sealing device and the inner wall of the valve body is reduced, and the air locking performance of the air seal is greatly improved.

Secondly, the sealing surface of the sealing device on the side surface of the baffle plate processed and polished by turning and milling or grinding is flat and smooth, and the precision requirement of high airtight use of a small gap between the sealing surface of the sealing device and the side cover which is flat and smooth is met; the smooth sealing surface of the sealing device is fully attached to the side cover, so that the sealing area between the sealing device and the side cover is increased, the size of a gap between the sealing surface of the sealing device and the side cover is reduced, and the air locking performance of the air seal machine is greatly improved.

And thirdly, the machined impeller also improves the 'coaxiality' of the impeller and the driving device, and ensures that a transmission shaft of the impeller and a power output shaft of the driving device are kept in the same straight line.

The sealing device is made of a polytetrafluoroethylene plate and a polytetrafluoroethylene ring, or a composite sealing plate and a composite sealing ring, or a polytetrafluoroethylene-based composite material plate and a polytetrafluoroethylene-based composite material ring, or a sealing plate or a sealing ring processed by combining rubber and polytetrafluoroethylene, or a sealing plate or a sealing ring processed by combining rubber and graphite, or a sealing device made of a single sealing material or a composite material combining multiple materials according to the use requirement. According to the dry gas sealing requirement of the sealing device of the high-airtightness air seal machine, the abrasion of the sealing device is reduced by combining the soft and hard combination of different materials and the support of energy absorption and buffering of the elastic material, so that a better dynamic sealing effect is achieved. Since the structure and production of the sealing device are conventional art, the present invention will not be described in detail.

The impeller, the valve body and the side cover are dynamically sealed by a sealing device; the sealing surface of the sealing device on the baffle is attached to the side cover, the inner surface of the side cover is attached to the sealing device of the baffle, the impeller and the side cover are dynamically sealed by the sealing device arranged on the side surface of the baffle, and the sealing device arranged on the baffle ensures that gas at the feed inlet and the discharge outlet of the valve casing cannot leak through the space between the impeller and the side cover.

The sealing device has the advantages that the elastic compression effect of the sealing material of the sealing device is utilized, the sealing surface of the sealing device is always attached to the inner wall of the valve body, the jumping caused by tolerance accumulation of the sealing device is avoided, meanwhile, the effect of automatic compensation of the sealing device due to abrasion is achieved, the sealing service life of the sealing device is longer, dynamic sealing between the sealing surface of the sealing device and the inner wall of the valve body is achieved, the air locking performance of the air seal device is improved to the maximum extent, and the gas tightness of the dynamic sealing is guaranteed.

The guide pipe is fixed on the valve body. Two ends of the flow guide pipe penetrate through the valve bodies on two sides, and the flow guide pipe is communicated with the interior of the valve bodies; the two ends of the guide pipe and the valve body are fixedly sealed.

The guide pipe is a metal pipe or a plastic pipe.

The guide pipe guides the high-pressure gas in the high-pressure bin at one side of the impeller into the low-pressure bin corresponding to the other side, the high-pressure gas is automatically subjected to pressure equalizing and flow dredging by the pressure generated by the high pressure of the high-pressure gas per se to flow into the low-pressure bin, and other power energy consumption is not needed in the pressure equalizing and flow dredging process. After high-pressure gas in the high-pressure bin enters the low-pressure bin, the pressure in the low-pressure bin is increased, the pressure in the high-pressure bin is reduced, and the pressure of different pressures in the left and right corresponding bins is the same pressure after corresponding pressure equalization through the guide pipe.

The honeycomb duct divides the gas with different pressure pressures in the bins on two sides of the impeller into gas with pressure pressures in multi-stage positions, and the gas leakage amount of each adjacent bin is reduced by the multi-stage distributed low-pressure-difference pressure. 1 guide pipe divides the relative pressure in the bins at two sides of the impeller into 3 stages of different pressure gas; 2 guide pipes are used for dredging the relative pressure in the bins at the two sides of the impeller into 4 stages of different pressure gases; 3 honeycomb ducts dredge the relative pressure in the bins on the two sides of the impeller into gas with different pressures in 5 stages. And installing proper number of guide pipes according to the number of the bins of the air seal machinery to guide the gas in the bins on two sides. .

The pressure difference of the pressure between the two corresponding storage bins on the left and right sides of the impeller is equalized through the flow guide pipe, the pressure difference between the two adjacent storage bins on the upper and lower sides of the impeller is reduced to be in a low-pressure-difference state of 50% of the original pressure, the sealing pressure of the sealing device is reduced by the pressure of the low-pressure difference, and the lower the pressure difference of the pressure between the two adjacent storage bins on the upper and lower sides of the impeller is, the lower the sealing requirement of the sealing device by the low-pressure difference between the two adjacent storage bins on the upper and lower sides of the impeller is. The low pressure difference of the pressure between the two bins adjacent to each other above and below the impeller reduces the gas leakage amount between the adjacent bins.

The utility model has particularly obvious effect in the fields of material conveying systems of vacuum equipment, negative pressure dust remover discharging systems, compressed air positive pressure conveying systems, vacuum tea making mechanical equipment and the like, saves energy consumed due to poor tightness and greatly improves the working efficiency. The novel electric heating furnace is simple in structure, easy to machine and manufacture, low in purchase and use cost, long in service life, low in price precision and high in practicability.

The work flow of the high-airtight type air seal machinery of the utility model is as follows:

when the drying device is used and operated, the feed inlet or the discharge outlet of the valve shell is connected to a drying bin of the drying device, the driving device is started, the driving device drives the transmission shaft and the impeller to rotate and operate, and materials enter the bin from the feed inlet through the bin opening of the impeller.

The pressure diversion pipe guides the pressure of different pressures of the two corresponding bins on the left and right of the two sides of the impeller into the pressure with the same pressure, the pressure between the two bins adjacent to each other up and down on the two sides of the impeller is weakened through the gas diversion of the diversion pipe, the pressure with the pressure difference of 50% is reduced to the sealing pressure of the sealing device, and the gas leakage amount of the adjacent bins is reduced by the pressure difference of 50%.

The impeller, the valve body and the side cover are dynamically sealed by a sealing device, the sealing air tightness is high, and the air leakage is less.

Thirdly, the bin rotates and moves along with the impeller, and materials in the bin are discharged from a discharge port below the valve shell.

The utility model aims to overcome the defects of the existing drying processing equipment and provide the drying processing equipment adopting the high-airtight type air seal machine.

In order to achieve the purpose, the utility model is realized by the following technical scheme: a drying process apparatus comprising a highly airtight type air seal machinery as hereinbefore described.

A drying processing equipment has adopted the supporting use of above-mentioned high airtight type air seal machinery, and high airtight type air seal machinery can carry out high airtight feeding row material in the environment of the inside and outside high pressure differential of drying chamber of drying processing equipment, ensures that drying processing equipment is carrying out effective drying work.

The high-airtight type air seal machine can be matched with vacuum drying processing equipment, negative-pressure superheated steam tea making equipment and other drying processing equipment, the pressure of the pressure in the bins at two sides of the impeller is communicated through the guide pipe, the pressure difference of every two adjacent bins above and below the two sides of the impeller is 50% lower, and the impeller, the valve body and the side cover are dynamically sealed by the sealing device to carry out high-airtight material conveying. The vacuum drying bin conveys materials through the high air tightness of the high air tightness type air seal machine, and gas among the materials in the bin can be reduced to enter the drying bin, so that the relative pressure increase influence of the vacuum drying bin is weakened due to the reduction of 50% of air input.

Compared with the prior equipment, the utility model has the following beneficial effects: the high-airtight type air seal machinery includes valve casing, impeller, flow guide pipe and sealing device. The outer circle sealing surface of the sealing device fixed on the impeller is turned, milled or ground, and the surface profile of the outer circle sealing surface of the sealing device meets the precision requirement of high airtight use for reducing a small gap between the sealing surface of the sealing device and the inner wall of the valve body. The smooth outer circle sealing surface of the sealing device is fully attached to the inner wall of the valve body, and the sealing area between the sealing device and the inner wall of the valve body is increased. The honeycomb duct guides the pressure of different pressures of two corresponding feed bins left and right of the two sides of the impeller into the pressure with the same pressure, the pressure between the two feed bins which are adjacent up and down of the two sides of the impeller is weakened, the impeller, the valve body and the side cover are dynamically sealed by the sealing device, and the air locking performance of the air seal machine is greatly improved. The high-airtight type air seal device can carry out high-airtight feeding and discharging in an environment with high pressure difference inside and outside a drying bin of the drying processing equipment, and guarantees that the drying processing equipment can carry out effective drying work.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the mounting structure of the sealing device of the present invention to the vane of the impeller;

FIG. 3 is a schematic view of the mounting structure of the sealing device and the baffle of the impeller;

FIG. 4 is a diagram illustrating the effect of the present invention applied to a high pressure drying apparatus;

fig. 5 is a diagram of the effect of the application of the present invention on a vacuum drying device.

In the drawings: 1. the device comprises a feed inlet, 2, a blade plate, 3, a valve body, 4, a flow guide pipe, 5, an impeller, 6, a sealing surface, 7, a storage bin, 8, a sealing device, 9, a discharge outlet, 10, a limiting block, 11 and a baffle.

The specific implementation mode is as follows:

the utility model is further described with reference to the following figures and examples:

example 1:

referring to fig. 1, 2 and 3, the high airtight type air seal machinery shown in fig. 1 comprises a valve housing, an impeller 5, a draft tube 4 and a sealing device 8.

The valve casing comprises a valve body 3, a side cover and a bearing. The bearings are mounted in the center of the side covers, which are fixed on both sides of the valve body 3. The valve shell is provided with a feed inlet 1 and a discharge outlet 9.

The impeller 5 comprises a blade plate 2, a baffle plate 11 and a transmission shaft.

The impeller 5 is arranged in the valve body 3. The transmission shaft of the impeller 5 is supported by bearings on the side covers at two ends, one end of the transmission shaft is sealed in the side covers, the other end extends out of the side covers, and the transmission shaft is used for being connected with a power output shaft of a driving device.

The blade plates 2 and the baffle plates 11 are fixed on the transmission shaft, the blade plates 2 are fixed between the baffle plates 11 on two sides, and the number of the bins 7 is 8.

The sealing device 8 is provided with a groove; a limiting block 10 is fixed on the impeller 5; the stopper 10 is inserted in the groove of the sealing device 8.

The thickness of the sealing device 8 is 2 mm. The seal 8 is a seal plate type seal 8 and a seal ring type seal 8. The surface of the sealing device 8 fixedly attached to the impeller 5 is a fixed surface of the sealing device 8, and the surface of the sealing device 8 attached to the inner wall of the valve body 3 is a sealing surface 6 of the sealing device 8. The sealing plate type sealing device 8 is fixed on the upper end face of the blade plate 2 and the side face of the baffle plate 11, and the sealing ring type sealing device 8 is sleeved on the upper end faces of the baffle plates 11 on the two sides.

The outer circle diameter value of the sealing device 8 processed by turning, milling or grinding is larger than the inner diameter value of the inner cavity of the valve body 3. 1. The diameter of the outer circle of the sealing device 8 on the impeller 5 which is not processed by turning or grinding is 1mm larger than the inner diameter of the valve body 3.

2. The profile of the excircle of the sealing device 8 after machining can meet the precision requirement of high airtight use for reducing a small gap between the sealing surface 6 of the sealing device 8 and the inner wall of the valve body 3.

3. The diameter of the outer circle of the sealing device 8 after turning, milling or grinding is larger than the inner diameter of the valve body 3 by 0.3mm, and the outer circle sealing surface 6 of the sealing device 8 is attached to the inner wall of the valve body 3. The outer circumferential sealing surface 6 of the sealing device 8 is a planar sealing surface.

The impeller 5, the valve body 3 and the side cover are dynamically sealed by a sealing device 8. The sealing means 8 are a teflon plate and a teflon ring. The sealing surface 6 of the sealing device 8 on the baffle plate 11 is attached to the side cover, the inner surface of the side cover is attached to the sealing device 8 of the baffle plate 11, and the impeller 5 and the side cover are dynamically sealed by the sealing device 8 arranged on the side surface of the baffle plate 11.

The guide pipe 4 is fixed on the valve body 3. Two ends of the draft tube 4 penetrate through the valve bodies on two sides, and the inside of the draft tube 4 and the inside of the valve body 3 are communicated; the two ends of the draft tube 4 and the valve body 3 are fixedly sealed.

The draft tube 4 is a metal tube.

The draft tube 4 guides the high-pressure gas in the high-pressure bin 7 at one side of the impeller 5 into the low-pressure bin 7 corresponding to the other side, the high-pressure gas is automatically equalized and drained to the low-pressure bin 7 by the pressure generated by the high pressure of the high-pressure gas, and the pressure difference between the two bins 7 corresponding to the left and the right of the impeller 5 and the bin 7 is equalized by the draft tube 4.

The draft tube 4 divides the pressure of different pressures of the bins 7 corresponding to two sides of the impeller 5 into 3-stage pressure, and the 3-stage distributed low-pressure-difference pressure reduces the air leakage of each adjacent bin 7.

As shown in fig. 1 and 4, the high-airtight type air seal machinery of the present invention is used in high-pressure drying processing equipment, and the high-airtight type air seal machinery of the present invention has the following work effects of high-airtight material conveying:

the impeller 5 is driven by an external driving device to rotate from left to right. The positions of the 8 bins 7 change along with the rotation of the impeller 5, and the draft tube 4 is fixed. The draft tube 4 equalizes different pressures in the bins 7 at two sides of the impeller 5 to the same pressure. 8 feed bins 7 of impeller 5 are feed bin 7 No. 1, feed bin 7 No. 2, feed bin 7 No. 3, feed bin 7 No. 4, feed bin 7 No. 5, feed bin 7 No. 6, feed bin 7 No. 7, feed bin 7 No. 8.

The feed inlet 1 of the high-airtight type air seal machinery shown in fig. 1 and 4 is fixedly connected to the high-pressure superheated steam drying bin, and the feed inlet 1 of the high-airtight type air seal machinery is fixedly connected to the discharge outlet of the high-pressure superheated steam drying bin. Setting the relative pressure of 0.3 Mpa in the high-pressure drying bin as 3 Mpa; the discharge opening 9 of the air seal machinery is under normal ambient atmospheric pressure, and the relative atmospheric pressure 1MPa at the discharge opening 9 is set to be 1 MPa.

The calculation of the relative pressure data in the 7 bins of the stock bin is as follows: one, when pressure 1 Mpa's No. 6 feed bin 7 and pressure 3 Mpa's No. 2 feed bin 7 rotated to next feed bin 7 position at impeller 5, the gaseous overflow that the honeycomb duct 4 was passed through to the total pressure gas of 1 + 3 of pressure 1 Mpa's No. 6 feed bin 7 and pressure 3 Mpa's No. 2 feed bin 7 was balanced to be 2Mpa, pressure 3 Mpa's No. 2 feed bin 7 becomes pressure 2 Mpa's No. 3 feed bin 7, pressure 1 Mpa's No. 6 feed bin 7 becomes pressure 2 Mpa's No. 7 feed bin 7. And the No. 7 bin 7 with the pressure of 2Mpa and the No. 3 bin 7 with the pressure of 2Mpa continue to rotate to the positions of the feed inlet 1 and the discharge outlet at the impeller 5.

The pressure flow through the flow guide tube 4 is thus: the relative pressure in 7 storehouses of the No. 1 stock bin is 3Mpa, the relative pressure in 7 storehouses of the No. 2 stock bin is 3Mpa, the relative pressure in 7 storehouses of the No. 3 stock bin is 2Mpa, the relative pressure in 7 storehouses of the No. 4 stock bin is 2Mpa, the relative pressure in 7 storehouses of the No. 5 stock bin is 1Mpa, the relative pressure in 7 storehouses of the No. 6 stock bin is 1Mpa, the relative pressure in 7 storehouses of the No. 7 stock bin is 2Mpa, and the relative pressure in 7 storehouses of the No. 8 stock bin is 2 Mpa. Because the relative pressure in the 7 bins of the No. 1 bin for reducing the gas discharge amount is 3Mpa and is supplemented by 2Mpa in the 7 bins of the No. 8 bin, the gas discharge amount is only 1Mpa, and the gas discharge amount of 1Mpa is reduced.

The air seal machinery that does not have the pressure of honeycomb duct 4 to dredge the flow on corresponding present market: the relative pressure in 7 storehouses of the No. 1 stock bin is 3Mpa, the relative pressure in 7 storehouses of the No. 2 stock bin is 3Mpa, the relative pressure in 7 storehouses of the No. 3 stock bin is 3Mpa, the relative pressure in 7 storehouses of the No. 4 stock bin is 3Mpa, the relative pressure in 7 storehouses of the No. 5 stock bin is 1Mpa, the relative pressure in 7 storehouses of the No. 6 stock bin is 1Mpa, the relative pressure in 7 storehouses of the No. 7 stock bin is 1Mpa, and the relative pressure in 7 storehouses of the No. 8 stock bin is 1 Mpa. The relative pressure in the 7 bins of the No. 1 bin is 3Mpa and the relative pressure in the 7 bins of the No. 8 bin is 1Mpa, and the air discharge amount is 2Mpa, so that the air discharge amount of the existing air seal machinery is increased by 2 Mpa.

The air discharge amount of the high-air-tightness air seal machine is only 1Mpa, the air discharge amount of the existing air seal machine is 2Mpa, and the high-pressure drying bin conveys materials through the high air tightness of the high-air-tightness air seal machine, so that the air discharge amount is reduced by 50%.

8 bins 7 of an impeller 5 of the air seal machinery flow through the gas dredging of the draft tube 4, and the pressure difference of each adjacent bin 7 above and below the two sides of the impeller 5 is 1 low pressure difference. The impeller 5 is dynamically sealed with the valve body 3 and the side cover through the sealing device 8, the pressure of the sealing device 8 on the blade plate 2 is greatly reduced by the low pressure difference of 1 pressure in the adjacent bin 7, the corresponding requirement of the sealing surface 6 of the sealing device 8 installed on the blade plate 2 is smaller and smaller, the contact friction force between the sealing device 8 and the valve shell is directly smaller, the kinetic energy power required by the driving device is smaller, and the energy consumption is greatly reduced.

The high-airtight type airlock can be matched with high-pressure superheated steam drying processing equipment to carry out high-airtight material conveying. The high-pressure drying bin conveys materials through the high air tightness of the high air tightness type air seal machine, and gas among the materials in the material bin 7 can be reduced to enter the drying bin, so that the pressure and high pressure influence on the high-pressure drying bin is weakened due to the reduction of 50% of gas discharge.

The high-airtight type air seal machinery of the utility model has the working effects that:

when the drying device is used and operated, the feed inlet 1 or the discharge port 9 of the valve shell is connected to a drying bin of the drying device, the driving device is started, the driving device drives the transmission shaft and the impeller 5 to rotate and operate, and materials enter the bin 7 from the feed inlet 1 through the bin opening of the impeller 5.

The draft tube 4 guides the pressure of two corresponding bins 7 at the left side and the right side of the impeller 5 to be the pressure with the same pressure, the pressure between the two bins 7 adjacent to each other up and down at the two sides of the impeller 5 and the pressure between the bins 7 are weakened through the gas guide of the draft tube 4, the sealing pressure of the sealing device 8 is reduced by the pressure with the pressure difference of 50%, and the gas leakage amount of the adjacent bins 7 is reduced by the pressure difference of 50%.

The impeller 5 and the valve body 3 and the side cover are dynamically sealed by a sealing device 8, and the sealing air tightness is high and the air leakage is less.

Thirdly, the bin 7 rotates and displaces along with the impeller 5, and materials in the bin 7 are discharged from a discharge port 9 below the valve shell.

A drying process apparatus comprising a highly airtight type air seal machinery as hereinbefore described. The high-airtight type air seal device can be used in a matched mode in a drying cabin of the drying processing equipment, continuous high-airtight feeding and discharging can be carried out in the environment with high pressure difference between the inside and the outside of the drying cabin of the drying processing equipment, and the continuous effective drying work of the drying processing equipment is guaranteed.

Example 2:

a highly airtight type air seal machinery as shown in fig. 1 comprises a valve housing, an impeller 5, a draft tube 4, and a sealing device 8.

A high air-tight type air seal machinery of the present embodiment 2 is the same as the high air-tight type air seal machinery described in the embodiment 1, and thus, a description thereof will not be repeated.

As shown in fig. 1, the sealing device 8 has no groove, and the impeller 5 has no stopper 10.

The sealing device 8 is fixed on the upper end surfaces of the blade plate 2 and the baffle plate 11 of the impeller 5, and the sealing device 8 is fixed on the side surface of the baffle plate 11.

The guide pipe 4 is a plastic pipe.

As shown in fig. 1 and 5, the high-airtight air seal machine of the present application is used in a vacuum drying processing device, and the working effect of the high-airtight air seal machine is as follows:

the feed inlet 1 of the high-airtight type air seal machinery is fixedly connected to the discharge hole of the vacuum drying bin. The relative pressure in the vacuum drying bin is set to be-0.099 Mpa; the discharge opening 9 of the air seal machine is under normal atmospheric pressure, and the relative air pressure setting calculation data at the discharge opening 9 is 0 MPa.

The impeller 5 is driven by an external driving device to rotate from left to right. The positions of the 8 bins 7 change along with the rotation of the impeller 5, and the draft tube 4 is fixed. The draft tube 4 equalizes different pressures in the bins 7 at two sides of the impeller 5 to the same pressure. 8 feed bins 7 of impeller 5 are feed bin 7 No. 1, feed bin 7 No. 2, feed bin 7 No. 3, feed bin 7 No. 4, feed bin 7 No. 5, feed bin 7 No. 6, feed bin 7 No. 7, feed bin 7 No. 8.

Flow through the flow guide pipe 4: the relative pressure in the No. 1 bin 7 bin is-0.099 Mpa, the relative pressure in the No. 2 bin 7 bin is-0.099 Mpa, the relative pressure in the No. 3 bin 7 bin is-0.050 Mpa, the relative pressure in the No. 4 bin 7 bin is-0.050 Mpa, the relative pressure in the No. 5 bin 7 bin is 0Mpa, the relative pressure in the No. 6 bin 7 bin is 0Mpa, the relative pressure in the No. 7 bin is-0.050 Mpa, and the relative pressure in the No. 8 bin 7 bin is-0.050 Mpa. The pressure difference of each adjacent bin 7 above and below the two sides of the impeller 5 is low pressure difference of 0.050 Mpa. The relative pressure in the bin 7 of the bin 1 with reduced air discharge is-0.099 MPa, and the relative pressure in the bin 7 of the bin 8 with reduced air discharge is supplemented by-0.050 MPa. The air input is only-0.050 Mpa, and the air input of the vacuum drying bin is reduced by 50% by conveying materials through the high air tightness of the high air tightness type air seal machine. The gas entering the No. 1 bin 7 at-0.050 MPa needs a vacuum pump to be pumped and discharged to the relative pressure of-0.099 MPa in the No. 1 bin 7. The exhaust volume of the vacuum pump is only original-0.050 Mpa to-0.099 Mpa, which reduces 50% of the exhaust volume of the vacuum pump and reduces the exhaust workload of the vacuum pump.

The pressure that does not have the honeycomb duct on corresponding present market dredges: the relative pressure in the 7 bins of the 1 bin is-0.099 Mpa, the relative pressure in the 7 bins of the 2 bin is-0.099 Mpa, the relative pressure in the 7 bins of the 3 bin is-0.099 Mpa, the relative pressure in the 7 bins of the 4 bin is-0.099 Mpa, the relative pressure in the 7 bins of the 5 bin is 0Mpa, the relative pressure in the 7 bins of the 6 bin is 0, the relative pressure in the 7 bins of the 7 bin is 0Mpa, and the relative pressure in the 7 bins of the 8 bin is 0 Mpa. The relative pressure in the No. 1 bin 7 bin of the existing air seal machinery is reduced to be-0.099 Mpa, and the relative pressure in the No. 8 bin 7 bin is supplemented by the gas of 0Mpa, so that the gas of 0Mpa entering the No. 1 bin 7 bin needs a vacuum pump to be pumped and exhausted to the relative pressure of-0.099 Mpa in the No. 1 bin 7, and the exhaust amount pumped and exhausted by the vacuum pump is increased.

The air inflow of the high-airtight type air seal machine is only-0.050 Mpa, the air inflow of the existing air seal machine is 0Mpa, and the vacuum drying bin conveys materials through the high airtightness of the high-airtight type air seal machine, so that the air inflow is reduced by 50%, and the exhaust workload of the vacuum pump is reduced.

The above embodiments are only used to help understand the manufacturing method and the core concept of the present invention, and the specific implementation is not limited to the above specific embodiments, and those skilled in the art can make changes without creative efforts from the above concepts, which all fall within the protection scope of the present invention.

Claims (5)

1. A high-airtight type air seal machinery comprises a valve shell, an impeller (5), a flow guide pipe (4) and a sealing device (8); the method is characterized in that: the valve casing comprises a valve body (3), a side cover and a bearing; the impeller (5) comprises an impeller plate (2), a baffle plate (11) and a transmission shaft;

the sealing device (8) is fixed on the impeller (5); the diameter of the outer circle of the sealing device (8) after turning and milling or grinding is 0.05-2 mm larger than the inner diameter of the valve body (3);

the honeycomb duct (4) is fixed on the valve body (3), and two ends of the honeycomb duct (4) penetrate through the valve bodies on two sides;

the impeller (5) is dynamically sealed with the valve body (3) and the side cover by a sealing device (8).

2. A highly airtight type air seal machinery according to claim 1, wherein: the fixing surface of the sealing device (8) is provided with a groove or is not provided with a groove; the impeller (5) is fixed with a limiting block (10) or is not provided with the limiting block (10).

3. A highly airtight type air seal machinery according to claim 1, wherein: the draft tube (4) is a metal tube or a plastic tube.

4. A highly airtight type air seal machinery according to claim 1, wherein: the draft tube (4) guides the pressure of different pressures of the two storage bins (7) corresponding to the left side and the right side of the impeller (5) into the pressure of the same pressure.

5. A dry processing equipment which characterized in that: a highly airtight type air seal machinery comprising the above-mentioned air seal machinery as claimed in any one of claims 1 to 4.

Images