CN113669456A - Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism - Google Patents
Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism Download PDFInfo
- Publication number
- CN113669456A CN113669456A CN202111136847.9A CN202111136847A CN113669456A CN 113669456 A CN113669456 A CN 113669456A CN 202111136847 A CN202111136847 A CN 202111136847A CN 113669456 A CN113669456 A CN 113669456A
- Authority
- CN
- China
- Prior art keywords
- shell
- ring
- microwave
- sealing
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 102
- 238000003756 stirring Methods 0.000 title claims abstract description 70
- 229920001971 elastomer Polymers 0.000 title claims abstract description 57
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 21
- 230000023556 desulfurization Effects 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 88
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 239000003381 stabilizer Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 7
- 230000001050 lubricating effect Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000010815 organic waste Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3296—Arrangements for monitoring the condition or operation of elastic sealings; Arrangements for control of elastic sealings, e.g. of their geometry or stiffness
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a sealing device for preventing microwave leakage of a rubber desulfurization stirring mechanism, which belongs to the technical field of mechanical sealing and comprises a shell and a bearing end cover, wherein the shell and the bearing end cover are arranged at the end part of a stirring shaft; the interior of the box body is provided with a microwave conversion device, and the exterior of the box body is provided with a microwave generator and a control module. The end part of the stirring shaft is blocked through the bearing end cover and the shell, high-pressure gas is filled into the box body through the high-pressure gas joint, the microwave conversion device detects microwave signals and transmits the microwave signals to the control module, the control module controls the action of the microwave automatic adjusting sealing structure, and then the sealing of the end part of the stirring shaft is realized through the pneumatic automatic adjusting sealing structure, so that the leakage of the microwave and the high-pressure gas in the box body is prevented.
Description
Technical Field
The invention belongs to the technical field of mechanical sealing, and particularly relates to a sealing device for preventing microwave leakage of a rubber desulfurization stirring mechanism.
Background
In the process of rubber desulfurization, rubber powder needs to be fully stirred, and the traditional material stirring mode is mechanical stirring. In order to improve the material stirring efficiency and enable the material stirring to be more uniform, a mode of combining mechanical stirring and high-pressure gas stirring is adopted, the rubber powder is subjected to microwave desulfurization in the stirring process, the high-pressure gas needs to be input into the stirring mechanism through a sealing device, in the actual working process, the pressure of the high-pressure gas can change along with the time, and the common rubber sealing cannot meet the function. Therefore, it is necessary to design a sealing device for automatically adjusting a mechanical gas stirring mechanism for preventing microwave leakage.
At present, the sealing rotary joint provided by the technical scheme with the patent number of CN201020127807.9 in the prior art does not consider the sealing between the rotary mandrel and the joint body, and the deep groove ball bearing lacks a structure for injecting grease periodically, so that hydraulic oil is easy to leak after long-time use, and normal operation of equipment cannot be guaranteed.
The technical scheme with the patent number of CN201620810200.8 provides a high-pressure rotary joint, does not have the effect of following pressure variation automatically regulated pressure seal, under the too high condition of pressure, can not guarantee sealed tightness.
In summary, the existing products in the market all have different design defects, and the design of the product aims to solve the problems.
Disclosure of Invention
The invention aims to provide a sealing device for preventing microwave leakage of a rubber desulfurization stirring mechanism, which aims to solve the technical problem that the stirring mechanism in the prior art has poor sealing performance in a high-pressure environment, can realize strict sealing between high-pressure gas and a rotating shaft, and has the functions of automatically adjusting compression sealing along with the change of microwave intensity and gas pressure, preventing the leakage of the microwave and the high-pressure gas in a box body and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a sealing device for preventing microwave leakage of a rubber desulfurization stirring mechanism comprises a shell and a bearing end cover which are arranged at the end part of a stirring shaft, wherein two sides of the shell are respectively connected with the bearing end cover and the side wall of a box body; the microwave conversion device is arranged in the box body, the microwave generator and the control module are arranged outside the box body, and the microwave conversion device controls the action of the microwave automatic adjusting sealing structure through the control module.
Preferably, the shaft head is a solid shaft, the stirring shaft is a hollow shaft, a plurality of vent holes communicated with inner holes of the hollow shaft are radially arranged at the end part of the hollow shaft, air inlet holes capable of being communicated with the vent holes are radially arranged on the side wall of the shell, and the high-pressure gas joint is arranged at the air inlet end of the air inlet holes; the middle part of the shell is in sealing fit with the hollow shaft, and a plurality of O-shaped rubber rings are arranged on the fitting surface of the shell and the hollow shaft and used for sealing a gap between the shell and the hollow shaft; and O-shaped rubber rings are arranged on two sides of the air inlet hole.
Preferably, the microwave automatic adjusting sealing structure comprises a sealing ring for tightly holding the hollow shaft, a left clamping ring and a right clamping ring, the left clamping ring and the right clamping ring are arranged outside the sealing ring, the upper end and the lower end of the left clamping ring are fixedly connected with the shell, the upper end of the right clamping ring is fixedly connected with the shell, the lower end of the right clamping ring is fixed at the tail end of a mandril, the other end of the mandril is connected with a cam, the cam is driven by a steering engine, the steering engine is fixed on a fixing plate, and the fixing plate is arranged in a groove in the inner side of the shell; the steering engine is controlled by a control module outside the shell, and the right clamping ring is driven to be close to the left clamping ring through the ejector rod so as to clamp the sealing ring.
Preferably, the microwave conversion device transmits microwave signals to the control module through a first lead, and the control module pumps electric signals to the steering engine through a second lead; the microwave conversion device comprises a measuring antenna, a detection circuit, a low-pass filter, an amplifier and an analog-to-digital converter.
Preferably, the air pressure automatic adjusting and sealing structure comprises a sealing ring, a left enveloping ring and a right enveloping ring which are used for tightly embracing the hollow shaft, the left enveloping ring and the right enveloping ring are arranged outside the sealing ring, the upper ends of the left enveloping ring and the right enveloping ring are fixed on the shell, the lower ends of the left enveloping ring and the right enveloping ring are respectively connected with two ends of the air cylinder, and the lower end of the left enveloping ring and the left end of the air cylinder are fixedly connected on the shell; the side wall of the shell is provided with a gas path channel for a gas pipe of the cylinder to pass through; and a supercharger connected with the air cylinder is arranged at the bottom of the shell.
Preferably, the supercharger conveys high-pressure gas to the cylinder through a gas pipeline penetrating through the gas path channel, and the left enveloping ring and the right enveloping ring are clamped through contraction of the cylinder so as to clamp the sealing ring.
Preferably, the inner diameters of the two ends of the supercharger are different, a duplex piston is arranged in the supercharger and comprises a connecting rod, a large piston and a small piston, the large piston and the small piston are respectively fixed at the two ends of the connecting rod, and the large piston and the small piston are respectively matched with the inner diameters of the two ends of the supercharger; and calculating the pressure ratio lambda of the supercharger according to the stress balance of the two ends of the large piston and the small piston in the supercharger.
Preferably, the supercharger is connected with the cylinder through an electromagnetic valve, the gas pressure inside the box body is amplified through the supercharger, the gas is conveyed to the cylinder through a gas pipeline, and the left enveloping ring and the right enveloping ring are automatically clamped and sealed by the aid of stretching of the cylinder.
Preferably, the shaft head is in running fit with the shell through a bearing, the tail end of the shaft head is in sealing fit with the bearing end cover through a sealing assembly, an adjusting gasket is arranged between the matching surfaces of the bearing end cover and the shell, and the bearing end cover is connected with the periphery of the shell through a plurality of bolts; and an oil filling hole is formed in the side wall of the shell, and an oil cup is arranged in the oil filling hole and used for lubricating the bearing.
Preferably, the sealing assembly comprises a sleeve and a rubber ring, the sleeve is sleeved on the excircle of the shaft head, the outer wall of the sleeve is waist-shaped and matched with the rubber ring, and the inner wall of the bearing end cover is provided with an inner conical surface for extruding the rubber ring.
Preferably, the rubber powder in the box body is stirred by adopting blades, microwaves and high-pressure gas, the blades are stirred by fixing round pipes on the hollow blades, one ends of the round pipes are connected to the hollow shaft through threads, and the hollow shaft rotates to drive the blades to realize blade stirring; stirring by microwave emitted by a microwave generator; high-pressure gas is introduced into the box body through a high-pressure gas joint and introduced into the hollow shaft through a vent hole in the hollow shaft, the high-pressure gas enters the hollow blades through the circular tube, and the high-pressure gas is sprayed out through nozzles at the bottoms of the hollow blades to stir rubber powder in the box body; the high-pressure gas is nitrogen, and a gas pressure stabilizer is arranged outside the box body and used for enabling the gas pressure in the hollow shaft to be 1.9 times of the internal pressure of the box body.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the end part of the stirring shaft is blocked by the bearing end cover and the shell, high-pressure gas is filled into the box body by using the high-pressure gas joint on the side wall of the shell, a microwave signal is detected by the microwave conversion device in the box body and is transmitted to the external control module, the action of the microwave automatic adjusting sealing structure is controlled by the control module, and the end part of the stirring shaft is sealed by the air pressure automatic adjusting sealing structure. The invention can automatically adjust and press the end part of the sealed stirring shaft along with the change of microwave intensity and gas pressure, thereby preventing the microwave and high-pressure gas in the box body from leaking; the self-adaptive regulation of the nitrogen input flow in the box body is realized through the linkage of the voltage stabilizer and the nitrogen flow electromagnetic valve, so that the flow of nitrogen reaches a supercritical fluid state, and the optimal effect of stirring rubber powder is achieved; meanwhile, the microwave radiation intensity leaked from the gap at the end part of the stirring shaft is monitored in real time by using a microwave leakage detector, so that organic waste gas in the box body is prevented from leaking from the supporting part of the stirring shaft, explosion is caused, and the safety coefficient of equipment is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of a sealing device for preventing microwave leakage of a rubber desulfurization stirring mechanism provided by an embodiment of the invention;
FIG. 2 is a schematic view of the connection of the housing to the case in the embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A of the hollow mandrel of FIG. 1;
FIG. 4 is a view from the direction B of FIG. 1;
FIG. 5 is an enlarged view of a portion of FIG. 4 at I;
FIG. 6 is a schematic view of a partial arrangement of the microwave automatic adjusting sealing structure and the air pressure automatic adjusting sealing structure at the bottom of the groove of the housing according to the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of an automatic microwave adjustment sealing structure in an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of an automatic air pressure adjusting sealing structure in an embodiment of the present invention;
FIG. 9 is a schematic structural view of a cylinder in the embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a supercharger in an embodiment of the present invention;
FIG. 11 is a schematic view of the mounting of a supercharger outside the housing in an embodiment of the present invention;
FIG. 12 is a control schematic diagram of an automatic microwave adjustment sealing structure in an embodiment of the present invention;
FIG. 13 is a control schematic diagram of the automatic air pressure adjustment sealing structure in the embodiment of the present invention;
FIG. 14 is a schematic diagram of a voltage regulator according to an embodiment of the present invention;
in the figure: 1. bearing end covers, 2, a solid shaft, 3, a sleeve, 4, a rubber ring, 5, a bearing, 6, an adjusting gasket, 7, a shell, 8, an oil cup, 9, a high-pressure gas joint, 10, a metal gasket, 11, a hollow shaft, 12, an O-shaped rubber ring, 13, a lead wire, 14, a gas pipeline, 15, a supercharger, 16, a microwave automatic adjusting and sealing structure, 17, an air pressure automatic adjusting and sealing structure, 18, a sealing ring, 19, a left clamping ring, 20, a right clamping ring, 21, a push rod, 22, a cam, 23, a fixing plate, 24, a steering engine, 25, a right enveloping ring, 26, an air cylinder, 27, a left enveloping ring, 28, a control module, 29, a lead wire, 30, a microwave conversion device, 31, a box body, 32, a round pipe, 33, a hollow blade, 34 and a microwave generator; 35-vent hole, 36-groove, 37-gas channel, 38-voltage stabilizer, 39-floating piston.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the sealing device for preventing microwave leakage of a rubber desulfurization stirring mechanism provided by the invention comprises a shell 7 and a bearing end cover 1 which are arranged at the end part of a stirring shaft 11, wherein two sides of the shell 7 are respectively connected with the bearing end cover 1 and the side wall of a box body 31, the end part of the stirring shaft 11 penetrates through the shell 7, a tail end shaft head 2 of the stirring shaft 11 is arranged in an inner cavity enclosed by the connecting of the bearing end cover 1 and the shell 7, a high-pressure gas connector 9 is arranged on the side wall of the shell 7 and used for introducing high-pressure gas into the shell 7 and the box body 31, and a microwave automatic adjusting sealing structure 16 and an air pressure automatic adjusting sealing structure 17 which are connected with the shell 7 are arranged at the end part of the stirring shaft 11; the inside of box 31 is equipped with microwave conversion equipment 30, the outside is equipped with microwave generator 34 and control module 28, microwave conversion equipment 30 passes through the action of control module 28 control microwave automatically regulated seal structure 16, realizes that atmospheric pressure automatically regulated is sealed, and then guarantees that high-pressure gas and microwave in the box are not leaked.
In one embodiment of the present invention, as shown in fig. 1, the shaft head 2 is a solid shaft, the stirring shaft 11 is a hollow shaft, the solid shaft 2 is coupled to the hollow shaft 11 through threads, and a metal gasket 10 is installed in the middle of the solid shaft 2 and the hollow shaft 11 for ensuring the connection rigidity of the solid shaft 2 and the hollow shaft 11; a plurality of vent holes 35 which are communicated with the inner hole of the hollow shaft are radially arranged at the end part of the hollow shaft, and 4 vent holes 35 are radially arranged in the embodiment of fig. 3; an air inlet hole capable of being communicated with the vent hole 35 is radially arranged on the side wall of the shell 7, and the high-pressure gas joint 9 is arranged at the air inlet end of the air inlet hole; the middle part of the shell 7 is in sealing fit with the hollow shaft, and a plurality of O-shaped rubber rings 12 are arranged on the fitting surface of the shell 7 and the hollow shaft and used for sealing a gap between the shell 7 and the hollow shaft; the both sides of inlet port all have O type rubber circle 12, and O type rubber circle is 4 in this embodiment.
In one embodiment of the present invention, as shown in fig. 1, 6 and 7, the microwave automatic adjusting sealing structure 16 includes a sealing ring 18 for tightly embracing the hollow shaft, a left clamping ring 19 and a right clamping ring 20, the left clamping ring 19 and the right clamping ring 20 are disposed outside the sealing ring 18, both upper and lower ends of the left clamping ring 19 are fixedly connected with the housing 7, an upper end of the right clamping ring 20 is fixedly connected with the housing 7, a lower end of the right clamping ring 20 is fixed at a tail end of a push rod 21, the other end of the push rod 21 is connected with a cam 22, the cam 22 is driven by a steering engine 24, the steering engine 24 is controlled by a control module 28 outside the housing 7, the push rod 21 drives the right clamping ring 20 to approach the left clamping ring 19, and further clamp the sealing ring 18. As shown in fig. 6, the steering engine 24 is fixed on the fixing plate 23, the fixing plate 23 is arranged in a groove 36 on the inner side of the housing 7, the cam 22 is fixed on an output shaft of the steering engine 24, and the cam 22 rotates to drive the ejector rod 21 to move leftwards. The left clamping ring 19 is fixed on the shell body and is not moved, only the upper end of the right clamping ring 20 is connected to the shell body 7 through a bolt, the sealing ring 18 is installed between the left clamping ring and the right clamping ring, the ejector rod 21 moves leftwards to push the right clamping ring 20 tightly, and therefore the sealing ring 18 is clamped, and the microwave automatic adjusting sealing function is achieved.
In one embodiment of the present invention, as shown in fig. 2 and 7, a microwave generator 34 is installed outside the box 31, and microwaves generated by the microwave generator are transmitted into the box through a waveguide, which generates electromagnetic waves with a certain oscillation frequency inside the box, and the microwave is used to stir and heat the rubber powder in the box to complete the desulfurization and activation. The microwave conversion device 30 transmits microwave signals to the control module 28 outside the box body 31 through a first lead, and the control module 28 pumps electric signals to the steering engine 24 through a second lead. As shown in fig. 12, the microwave conversion apparatus includes a measuring antenna, a detector circuit, a low-pass filter, an amplifier, and an analog-to-digital converter.
The specific working process is as follows:
because the rubber powder in the box body is stirred in a microwave mode, the microwave conversion device firstly receives electromagnetic wave signals through the measuring antenna, then carries out detection through the detection circuit, and carries out filtering through the low-pass filter, because the signals received by the measuring antenna are weak, the signals need to be amplified through the amplifying circuit, and finally the signals processed by the amplifying circuit are converted into digital signals through the analog-to-digital converter; then send digital signal into control module, control module output control signal control steering wheel's rotation angle, the steering wheel is rotatory drives the cam rotation simultaneously, and then drives ejector pin and right clamp ring and remove the tight left clamp ring of top, realizes controlling the clamp ring and continuously presss from both sides tightly to realize the sealed function of microwave automatically regulated.
In one embodiment of the present invention, as shown in fig. 1, 2, 4, 5, 6, 8, and 9, the automatic air pressure adjusting and sealing structure includes a sealing ring 18 for embracing the hollow shaft 11, a left enveloping ring 27 and a right enveloping ring 25, the left enveloping ring 27 and the right enveloping ring 25 are disposed outside the sealing ring 18, upper ends of the left enveloping ring 27 and the right enveloping ring 25 are fixed on the housing 7, lower ends of the left enveloping ring 27 and the right enveloping ring 25 are respectively connected to two ends of an air cylinder 26, and lower ends of the left enveloping ring 27 and the left end of the air cylinder 26 are fixed on the housing 7; an air passage channel 37 for an air pipe of the air cylinder 26 to pass through is arranged on the side wall of the shell 7; the bottom of the outer side of the housing 7 is provided with a supercharger 15 connected to a cylinder 26, as shown in fig. 1, 2 and 11. As shown in fig. 1 and 5, the pressure booster 15 delivers high-pressure gas to the cylinder 26 through a gas pipeline penetrating through the gas channel 37, and the cylinder 26 contracts to clamp the left envelope ring 27 and the right envelope ring 25, so as to clamp the sealing ring 18, and seal the edge of the contact end of the hollow shaft and the shell, so that the high-pressure gas and microwaves are prevented from leaking along the matching surface between the hollow shaft and the shell.
During specific manufacturing, as shown in fig. 10, the inner diameters of the two ends of the supercharger 15 are different, a duplex piston is arranged inside the supercharger 15, the duplex piston comprises a connecting rod 150, a large piston 151 and a small piston 152, the large piston 151 and the small piston 152 are respectively fixed at the two ends of the connecting rod 150, and the large piston 151 and the small piston 152 are respectively matched with the inner diameters of the two ends of the supercharger 15; according to the stress balance of two ends of a large piston and a small piston in the supercharger, the supercharging ratio lambda of the supercharger is calculated, and the calculation process of the supercharging ratio lambda is as follows:
in the formula: pInput device: pressure of the supercharger POutput of: output pressure of supercharger
da: diameter of the input lumen, db: diameter of output cavity
The pressure increase ratio lambda being the output pressure POutput ofAnd the input pressure PInput deviceThe ratio of:
in the specific application process, the supercharger 15 is connected with the cylinder 26 through an electromagnetic valve, and considering that the pressure of high-pressure gas in the box body is low, the gas pressure in the box body 31 is amplified through the supercharger 15 and is transmitted to the cylinder 26 through a gas pipeline, the left enveloping ring 27 and the right enveloping ring 25 automatically clamp the sealing ring 18 through the cylinder 26, the edge of the contact end of the hollow shaft and the shell is further sealed, and the leakage of the high-pressure gas and microwaves along the matching surface between the hollow shaft and the shell is avoided. The pressure sensor is arranged in the box body, the internal pressure of the box body can be detected on line, the pressure sensor and the electromagnetic valve can be connected with an external control module, and the automatic control of the air cylinder is realized. As shown in fig. 13, the working principle is as follows:
when the air pressure in the box body is low, the pressure sensor sends a low-pressure signal to the control module, the control module controls the first electromagnetic valve and the supercharger to be started, the low-pressure gas is pressurized by the supercharger and then is conveyed to the air cylinder, and the piston of the air cylinder is driven to move; when the air pressure in the box body is high, the pressure sensor sends a high-pressure signal to the control module, the control module controls the first electromagnetic valve to be closed, meanwhile, the second electromagnetic valve is opened, and the air cylinder is directly driven by the air in the box body. The automatic control of the cylinder can be realized by utilizing the structure, and the gas in the box body is used as a gas source of the cylinder without additionally providing a gas source.
As shown in fig. 1, during specific assembly, the spindle nose 2 is in running fit with the housing 7 through a bearing 5, the end of the spindle nose 2 is in sealing fit with the bearing end cover 1 through a sealing component, an adjusting gasket 6 is arranged between the matching surfaces of the bearing end cover 1 and the housing 7, and the adjusting gasket 6 is used for adjusting the clearance of the bearing 5; the bearing end cover 1 is connected with the periphery of the shell 7 through a plurality of bolts; the side wall of the shell 7 is provided with an oil filling hole, an oil cup 8 is arranged in the oil filling hole and used for periodically filling bearing lubricating grease, a lubricating oil path is arranged in the shell 7, and the lubricating grease flows into the bearing 5 through the lubricating oil path, so that the bearing 5 is lubricated. The sealing assembly comprises a sleeve 3 and a rubber ring 4, the sleeve 3 is sleeved on the excircle of the shaft head 2, the outer wall of the sleeve 3 is waist-shaped and matched with the rubber ring 4, and the inner wall of the bearing end cover 1 is provided with an inner conical surface for extruding the rubber ring 4. The bearing end cover 1 compresses the rubber ring 4 on the sleeve 3, the right side of the sleeve 3 tightly props against the left side of the inner ring of the bearing 5, and the bearing end cover 1 tightly props against the left side of the outer ring of the bearing 5, so that the rubber ring 4 and the sleeve 3 form the left side seal of the bearing 5; the leftmost O-shaped sealing ring 12 forms the right side seal of the bearing 5, so that the left side and the right side of the bearing are sealed, and meanwhile, the O-shaped sealing ring 12 is also used for sealing a gap between the shell 7 and the hollow shaft 11 to prevent high-pressure gas from leaking; the right side of the inner ring of the bearing 5 is positioned through a shaft collar, so that the axial positioning of the bearing 5 is realized.
During the specific manufacturing, the sealing ring and the O-shaped rubber ring are made of silicon rubber; the shell is processed by adopting a casting process, so that batch processing is convenient.
The rubber powder in the box body 31 is stirred by adopting blades, microwaves and high-pressure gas, the blades are stirred by fixing round pipes 32 on hollow blades 33, one ends of the round pipes 32 are connected to the hollow shaft 11 through threads, and the hollow shaft 11 rotates to drive the hollow blades 33 to realize blade stirring; the microwave agitation is performed by the microwave emitted from the microwave generator 34; high-pressure gas is introduced into the box body through the high-pressure gas connector 9 and introduced into the hollow shaft 11 through the vent hole 35 on the hollow shaft 11, the high-pressure gas enters the hollow blades 33 through the circular tubes 32, and the high-pressure gas is sprayed out through the nozzles at the bottoms of the hollow blades 33 to stir rubber powder in the box body; the high-pressure gas is nitrogen, and a gas pressure stabilizer is arranged outside the box body and used for enabling the gas pressure in the hollow shaft to be 1.9 times of the internal pressure of the box body.
When the device is specifically designed, the nozzle at the tail end of the hollow blade is a contraction nozzle which is used for converting the pressure energy of nitrogen into kinetic energy and playing a role in stirring rubber powder. As shown in fig. 14, a floating piston 39 is arranged inside the pressure stabilizer 38, and the inner cavities at the two ends of the floating piston are respectively communicated with the hollow shaft and the inside of the box body; the displacement sensor is arranged on the floating piston of the voltage stabilizer, the flow electromagnetic valve for controlling the nitrogen input flow is arranged at the inlet end of the high-pressure gas joint, the displacement sensor and the flow electromagnetic valve are both connected with the control module, and when the floating piston moves leftwards, the opening of the flow electromagnetic valve is enlarged; when the floating piston moves to the right, the opening of the flow electromagnetic valve is reduced, and the linkage of the floating piston and the flow electromagnetic valve is realized. The gas pressure in the box body is P1, the gas pressure in the hollow shaft is P2, when P2 is 1.9P1, the position of the floating piston is unchanged, the floating piston is in a balanced state, the input flow of nitrogen is unchanged, the flow of nitrogen reaches a supercritical fluid state, the flow speed at the outlet of the nozzle reaches the sound velocity, and the optimal effect of stirring rubber powder is achieved.
As the production is carried out, the temperature of rubber powder is increased, more waste gas is generated, the waste gas can not be exhausted through the exhaust port, the gas pressure P1 in the cavity is increased, the P2 is smaller than 1.9P1, when the floating piston moves leftwards, the opening of the flow valve is increased, the nitrogen input flow rate is increased, the gas pressure P2 in the hollow shaft is increased, and a new balance state is achieved until P2 is 1.9P 1.
In addition, when the sealing device is aged or fails due to other reasons, microwaves in the box body may leak, and the microwaves pass through a metal gap at the end part of the stirring shaft, so that a sparking phenomenon may occur; if organic waste gas in the box body leaks through the gap and is mixed with air to form premixed gas, the premixed gas can explode when being ignited by metal. Therefore, a safety protection device is arranged at the matching position of the stirring shaft and the box body, and the safety protection device is a microwave leakage detector arranged at the supporting position of the end part of the stirring shaft and is used for monitoring the microwave radiation intensity leaked at the supporting position of the stirring shaft in real time. When the microwave radiation intensity is less than 50 muW/cm 2, the range is safe, no metal ignition is caused, and the waste gas in the box body is naturally discharged to the waste gas collecting device through the exhaust port.
When the microwave radiation intensity leaked from the support part of the stirring shaft is greater than 50 muW/cm 2, metal ignition may be caused, the suction pump of the waste gas collecting device needs to be opened to forcibly pump out the waste gas in the box body, so that the gas pressure in the box body is not greater than 0.1Mpa, the organic waste gas is ensured not to leak from the support part of the stirring shaft, and explosion is avoided.
In conclusion, the automatic regulating and sealing device has the advantages of high sealing performance, good rubber powder stirring effect and high safety coefficient, the control module controls the action of the automatic regulating and sealing structure for the microwaves, the automatic regulating and sealing structure for the air pressure realizes the sealing of the end part of the stirring shaft, the end part of the stirring shaft can be automatically regulated and compressed along with the change of the microwave strength and the nitrogen pressure, and the leakage of the microwaves and high-pressure gas in the box body is prevented. Through the linkage of the pressure stabilizer and the flow electromagnetic valve for controlling the nitrogen input flow, the self-adaptive adjustment of the nitrogen input flow in the box body is realized, so that the flow of nitrogen reaches a supercritical fluid state, and the optimal effect of stirring rubber powder is achieved. Meanwhile, the microwave radiation intensity leaked from the gap at the end part of the stirring shaft is monitored in real time by using a microwave leakage detector, so that organic waste gas in the box body is prevented from leaking from the supporting part of the stirring shaft, explosion is caused, and the safety coefficient of equipment is improved.
In the description above, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and thus the present invention is not limited to the specific embodiments disclosed above.
Claims (10)
1. The utility model provides a sealing device that is used for rubber desulfurization rabbling mechanism to prevent microwave leakage which characterized in that: the stirring device comprises a shell and a bearing end cover which are arranged at the end part of a stirring shaft, wherein two sides of the shell are respectively connected with the bearing end cover and the side wall of a box body, the end part of the stirring shaft penetrates through the shell, a tail end shaft head of the stirring shaft is arranged in an inner cavity enclosed by the bearing end cover and the shell, a high-pressure gas joint is arranged on the side wall of the shell and used for introducing high-pressure gas into the shell and the box body, and a microwave automatic adjusting sealing structure and a gas pressure automatic adjusting sealing structure which are connected with the shell are arranged at the end part of the stirring shaft; the microwave conversion device is arranged in the box body, the microwave generator and the control module are arranged outside the box body, and the microwave conversion device controls the action of the microwave automatic adjusting sealing structure through the control module.
2. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism as recited in claim 1, wherein: the shaft head is a solid shaft, the stirring shaft is a hollow shaft, a plurality of vent holes communicated with inner holes of the hollow shaft are radially arranged at the end part of the hollow shaft, an air inlet hole capable of being communicated with the vent holes is radially arranged on the side wall of the shell, and the high-pressure gas joint is arranged at the air inlet end of the air inlet hole; the middle part of the shell is in sealing fit with the hollow shaft, and a plurality of O-shaped rubber rings are arranged on the fitting surface of the shell and the hollow shaft and used for sealing a gap between the shell and the hollow shaft; and O-shaped rubber rings are arranged on two sides of the air inlet hole.
3. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism as recited in claim 2, wherein: the microwave automatic adjustment sealing structure comprises a sealing ring, a left clamping ring and a right clamping ring which are used for tightly holding the hollow shaft, the left clamping ring and the right clamping ring are arranged outside the sealing ring, the upper end and the lower end of the left clamping ring are fixedly connected with the shell, the upper end of the right clamping ring is fixedly connected with the shell, the lower end of the right clamping ring is fixed at the tail end of a push rod, the other end of the push rod is connected with a cam, the cam is driven by a steering engine, the steering engine is controlled by a control module outside the shell, and the right clamping ring is driven by the push rod to be close to the left clamping ring so as to clamp the sealing ring.
4. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism, according to claim 3, is characterized in that: the microwave conversion device transmits microwave signals to the control module through the first lead, and the control module pumps the electric signals to the steering engine through the second lead.
5. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism as recited in claim 2, wherein: the air pressure automatic adjusting and sealing structure comprises a sealing ring, a left enveloping ring and a right enveloping ring which are used for tightly embracing the hollow shaft, the left enveloping ring and the right enveloping ring are arranged outside the sealing ring, the upper ends of the left enveloping ring and the right enveloping ring are fixed on the shell, the lower ends of the left enveloping ring and the right enveloping ring are respectively connected with the two ends of the air cylinder, and the lower end of the left enveloping ring and the left end of the air cylinder are fixedly connected on the shell; the side wall of the shell is provided with a gas path channel for a gas pipe of the cylinder to pass through; the bottom of casing is equipped with the booster that links to each other with the cylinder, the booster is through running through the gas circuit pipeline of gas circuit passageway with high-pressure gas transport to the cylinder, presss from both sides tight left envelope ring and right envelope ring through the cylinder shrink, and then presss from both sides tight sealing washer.
6. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism, according to claim 5, is characterized in that: the inner diameters of two ends of the supercharger are different, a duplex piston is arranged in the supercharger and comprises a connecting rod, a large piston and a small piston, the large piston and the small piston are respectively fixed at two ends of the connecting rod, and the large piston and the small piston are respectively matched with the inner diameters of two ends of the supercharger; and calculating the pressure ratio lambda of the supercharger according to the stress balance of the two ends of the large piston and the small piston in the supercharger.
7. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism, according to claim 6, is characterized in that: the supercharger is connected with the cylinder through the electromagnetic valve, the gas pressure in the box body is amplified through the supercharger and is conveyed to the cylinder through a gas pipeline, and the left enveloping ring and the right enveloping ring automatically clamp the sealing ring through the expansion of the cylinder.
8. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism as recited in claim 2, wherein: the shaft head is in rotating fit with the shell through a bearing, the tail end of the shaft head is in sealing fit with the bearing end cover through a sealing assembly, an adjusting gasket is arranged between the matching surfaces of the bearing end cover and the shell, and the bearing end cover is connected with the periphery of the shell through a plurality of bolts; and an oil filling hole is formed in the side wall of the shell, and an oil cup is arranged in the oil filling hole and used for lubricating the bearing.
9. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism as recited in claim 8, wherein: the sealing assembly comprises a sleeve and a rubber ring, the sleeve is sleeved on the excircle of the shaft head, the outer wall of the sleeve is waist-shaped and matched with the rubber ring, and the inner wall of the bearing end cover is provided with an inner conical surface used for extruding the rubber ring.
10. The sealing device for preventing the microwave leakage of the rubber desulfurization stirring mechanism according to any one of claims 2 to 9, wherein: the rubber powder in the box body is stirred by adopting blades, microwaves and high-pressure gas, the blades are stirred by fixing round pipes on the hollow blades, one ends of the round pipes are connected to the hollow shaft through threads, and the hollow shaft rotates to drive the hollow blades to realize blade stirring; stirring by microwave emitted by a microwave generator; high-pressure gas is introduced into the box body through a high-pressure gas joint and introduced into the hollow shaft through a vent hole in the hollow shaft, the high-pressure gas enters the hollow blades through the circular tube, and the high-pressure gas is sprayed out through nozzles at the bottoms of the hollow blades to stir rubber powder in the box body; the high-pressure gas is nitrogen, and a gas pressure stabilizer is arranged outside the box body and used for enabling the gas pressure in the hollow shaft to be 1.9 times of the internal pressure of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136847.9A CN113669456B (en) | 2021-09-27 | 2021-09-27 | Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111136847.9A CN113669456B (en) | 2021-09-27 | 2021-09-27 | Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113669456A true CN113669456A (en) | 2021-11-19 |
| CN113669456B CN113669456B (en) | 2024-03-26 |
Family
ID=78550329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111136847.9A Active CN113669456B (en) | 2021-09-27 | 2021-09-27 | Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113669456B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114984857A (en) * | 2022-06-28 | 2022-09-02 | 华能辛店发电有限公司 | Reation kettle is used in preparation of power plant's waste gas absorption liquid |
| CN115750604A (en) * | 2022-10-27 | 2023-03-07 | 江苏鼎麒轴承有限公司 | Rolling mill bearing seal assembly |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201687801U (en) * | 2010-03-10 | 2010-12-29 | 无锡市长江液压缸厂 | Sealing swivel joint |
| CN202344673U (en) * | 2011-11-16 | 2012-07-25 | 山推楚天工程机械有限公司 | Stir main engine shaft end air seal device |
| CN205877512U (en) * | 2016-07-28 | 2017-01-11 | 南通雾境高压泵有限公司 | High -pressure rotary joint |
| CN108079900A (en) * | 2017-12-25 | 2018-05-29 | 湖南长仪微波科技有限公司 | A kind of microwave high pressure reaction kettle |
| CN208221600U (en) * | 2018-05-08 | 2018-12-11 | 李顺舟 | A kind of Combined concrete sealing device for shaft end of stirring |
| CN210862079U (en) * | 2019-11-26 | 2020-06-26 | 秦皇岛曼国化工机械有限公司 | Coulter mixer with high sealing performance |
| US20210213403A1 (en) * | 2019-03-15 | 2021-07-15 | Tsi Co.Ltd. | Slurry mixer for a battery electrode |
-
2021
- 2021-09-27 CN CN202111136847.9A patent/CN113669456B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201687801U (en) * | 2010-03-10 | 2010-12-29 | 无锡市长江液压缸厂 | Sealing swivel joint |
| CN202344673U (en) * | 2011-11-16 | 2012-07-25 | 山推楚天工程机械有限公司 | Stir main engine shaft end air seal device |
| CN205877512U (en) * | 2016-07-28 | 2017-01-11 | 南通雾境高压泵有限公司 | High -pressure rotary joint |
| CN108079900A (en) * | 2017-12-25 | 2018-05-29 | 湖南长仪微波科技有限公司 | A kind of microwave high pressure reaction kettle |
| CN208221600U (en) * | 2018-05-08 | 2018-12-11 | 李顺舟 | A kind of Combined concrete sealing device for shaft end of stirring |
| US20210213403A1 (en) * | 2019-03-15 | 2021-07-15 | Tsi Co.Ltd. | Slurry mixer for a battery electrode |
| CN210862079U (en) * | 2019-11-26 | 2020-06-26 | 秦皇岛曼国化工机械有限公司 | Coulter mixer with high sealing performance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114984857A (en) * | 2022-06-28 | 2022-09-02 | 华能辛店发电有限公司 | Reation kettle is used in preparation of power plant's waste gas absorption liquid |
| CN114984857B (en) * | 2022-06-28 | 2023-09-08 | 华能辛店发电有限公司 | Reaction kettle for preparing waste gas absorption liquid of power plant |
| CN115750604A (en) * | 2022-10-27 | 2023-03-07 | 江苏鼎麒轴承有限公司 | Rolling mill bearing seal assembly |
| CN115750604B (en) * | 2022-10-27 | 2024-01-12 | 江苏鼎麒轴承有限公司 | Rolling mill bearing seal assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113669456B (en) | 2024-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113669456A (en) | Sealing device for preventing microwave leakage of rubber desulfurization stirring mechanism | |
| CN105697790A (en) | Air inflation axial sealing device used in vacuum environment | |
| CN105156156B (en) | Turbine decompression power set and turbine decompression unit | |
| CN205298561U (en) | A aerify axial seal device for under vacuum environment | |
| CN110671501A (en) | Structure for sealing pyrolysis gas by adopting labyrinth | |
| CN105626570B (en) | A kind of hydrogen turbine pump | |
| CN208142977U (en) | A kind of sealing structure of shaft end of dry-type submersible motor | |
| CN210033837U (en) | Sealing mechanism for scroll compressor | |
| CN210014625U (en) | Automatic feeding and discharging airtight butt joint device and double-cone rotary vacuum drying machine thereof | |
| CN211452750U (en) | Helium leak detection clamp and vacuum leak detection device of hydraulic torque converter | |
| CN220622245U (en) | Pressure-adjustable sealer of vacuum compressor and vacuum compressor | |
| CN105351245B (en) | Roots blower mechanical sealing medium apparatus for controlling of supply | |
| CN210113386U (en) | Split type power turbine structure containing static pressure seal | |
| CN220955730U (en) | Turbine impeller non-contact sealing system applied to high-pressure environment and turbine | |
| CN204493241U (en) | Electric high-pressure pump | |
| CN109555709A (en) | A kind of high net positive suction head high pressure condensation cycle water pump assembly | |
| CN215448373U (en) | Be applied to gas tightness detection device of valve processing | |
| CN219654748U (en) | Protective cover for coupling of turbine transmission compressor | |
| CN114484000B (en) | Multilayer seal structure and spherical forged steel ball valve | |
| CN214217473U (en) | Airtight rotary feeder | |
| CN107917085A (en) | Electronic deep-well ballast pump | |
| CN219345782U (en) | Air compressor pipe fitting interfacing apparatus that gas tightness is high | |
| CN212902354U (en) | Efficient drying converter for polyvinyl chloride production | |
| CN219051052U (en) | Vacuumizing single-screw mixer | |
| CN220396498U (en) | Actuating mechanism for regulating valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240226 Address after: 053411 east of Tuan Village, qingliangdian Town, Wuyi County, Hengshui City, Hebei Province Applicant after: Hengshui Hengfeng Yick Road Asphalt Science & Technology Co.,Ltd. Country or region after: China Applicant after: Hebei Jiaotou Special Materials Technology Co.,Ltd. Address before: 053411 east of Tuan Village, qingliangdian Town, Wuyi County, Hengshui City, Hebei Province Applicant before: Hengshui Hengfeng Yick Road Asphalt Science & Technology Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |