CN112354699A - Bottom shaft cover assembly for tubular separator drum and tubular separator drum - Google Patents
Bottom shaft cover assembly for tubular separator drum and tubular separator drum Download PDFInfo
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- CN112354699A CN112354699A CN202011273076.3A CN202011273076A CN112354699A CN 112354699 A CN112354699 A CN 112354699A CN 202011273076 A CN202011273076 A CN 202011273076A CN 112354699 A CN112354699 A CN 112354699A
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- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
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Abstract
The invention discloses a bottom shaft cover assembly for a rotary drum of a tubular separator and the rotary drum of the tubular separator, which comprise a bottom shaft cover, a material blocking disc, a ring valve, a liquid storage ring and O-shaped sealing rings with various specifications, wherein the parts form a plurality of chambers, an upper chamber, a liquid storage chamber, a lower chamber and a first cavity for depositing solid sediments, the material blocking disc is provided with an overflow channel for overflowing liquid after separation, the inner wall of the bottom shaft cover is provided with a plurality of slag discharge holes at the position close to the lower end surface of the material blocking disc, and compared with the traditional tubular separator, the separator using the bottom shaft cover assembly and the rotary drum can realize automatic slag discharge without stopping machine, improve the separation efficiency of the tubular separator and has more obvious advantages on materials with higher solid content; in addition, a liquid storage cavity is additionally arranged, so that centrifugal hydraulic pressure for pushing the ring valve to rise can be improved, and the sealing stability of the slag discharge hole is further improved.
Description
Technical Field
The invention relates to the technical field of tubular separators, in particular to a bottom shaft cover assembly for a rotary drum of a tubular separator and the rotary drum of the tubular separator.
Background
The tubular separator is the machine with the highest rotating speed and the highest separation factor in the industrial centrifuges in the current market. The physical centrifugal equipment mainly comprises a strong centrifugal force field formed by high-speed rotation of a rotary drum, wherein gravity is replaced by centrifugal force, so that two or three different components in a material (suspension or emulsion) are quickly layered due to the difference of specific gravities, liquid respectively flows out from an outlet at the upper part of the rotary drum, and solids are deposited in the rotary drum, so that the material is separated.
The drum is a core part of a tubular separator, the drum of the tubular separator in the prior art is shown in figure 1 and consists of a drum head, a drum barrel and a bottom shaft cover component, the drum head, the drum barrel and the bottom shaft cover component are driven by a motor and a speed change mechanism to rotate at high speed along the axis of the drum head, materials are separated in the drum barrel, liquid flows out from an upper overflow port, solid is coated on the annular surface of the inner wall of the drum barrel due to no flowability, and the drum is taken out to be manually cleaned after being stopped. In order to clean the solid slag in the drum barrel, the drum barrel and the bottom shaft cover are connected through screw threads and can be detached when necessary. When deslagging, the rotary drum needs to be fixed on a special bracket, a special tool is used, the bottom shaft cover is dismounted, and the solid phase settled on the inner wall of the rotary drum is carefully and thoroughly cleaned; the bottom shaft cover is then tightened again and the machine is reassembled. Tubular separators are intermittently operated devices because of the need to shut down periodically for manual cleaning.
This intermittent operation severely reduces the production efficiency of the tubular separator, which is exemplified by a G105 machine having a rotor with an inner diameter of 105mm, a rotational speed of 16300rpm, a separation factor of 15700, a rotor volume of 6L, and a water throughput of 1200L/h. If the production rate is set to 600L/h and the solid content (volume percent) of the material is 1 percent, 6L of solid is produced every 1 hour of production, and the machine is stopped to discharge the slag. And because the inner diameter of the separation cylinder is reduced due to the accumulation of solids in the cylinder, although the rotating speed is not reduced, the separation factor (the separation factor is proportional to the diameter of the rotor and the rotating speed of the rotor) is reduced, and the separation quality is influenced. Therefore, in actual production, when the sediment in the middle cylinder usually reaches 4-5L, the machine is stopped to discharge the sediment.
The tubular separator belongs to a flexible rotor, the driving shaft of the tubular separator is thin, a braking device cannot be added, the rotating speed is high, the inertia is large, the free stop time is more than 6 minutes, in addition, the assembly, disassembly and cleaning time is added, the rotor is generally cleaned for at least 20 minutes once, if the solid content of materials is higher, the stop and start frequency is increased, the labor intensity is greatly increased, and the efficiency is reduced. For example, the solid concentration of the separated material is 5%, the production capacity is 600L/H, 5L of solid is generated every 10 minutes, the machine is stopped to discharge slag, the cleaning time is 20 minutes, the single-machine yield is only 200L/H, and in the actual production process, the single-machine yield of the traditional shutdown type tubular separator for the material with higher solid content is obviously lower than that of the material with higher solid content.
Based on this, some technical documents disclose a disk separator and a horizontal screw centrifuge, which can realize the production mode of automatic slag discharge. However, due to the change of the structure, the shape of the disc-type separator is similar to a disc shape, although the horizontal spiral centrifuge is slender, a spiral pusher is arranged in the horizontal spiral centrifuge to form an inner rotary drum, so that the rotating speed is greatly reduced, the separation factor of the two devices is generally reduced by 2-6 times compared with that of a tubular separator, and the separation effect is greatly different. And a large number of devices are added for realizing the purpose of automatic slag discharge, the complexity of the structure is increased, the cost is improved, the selling price is high, the production of medium and small batches is not satisfied, the reduction of the separation effect is caused by the reduction of the rotating speed, and the situation of high separation precision is not satisfied.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a bottom shaft cover assembly for a rotary drum of a tubular separator, which changes the traditional continuous separation and shutdown worker slag discharge mode into a continuous separation and automatic slag discharge mode, and has the working modes of no shutdown, no reduction of the rotating speed of a working rotor and no shutdown of feeding during slag discharge; a feeding through hole communicated with the first cavity is formed in the bottom surface of the bottom shaft cover and used for inserting a feeding nozzle; a ring valve capable of moving up and down is coaxially arranged outside the bottom shaft cover and the bottom shaft cover, a liquid storage ring is arranged between the ring valve and the bottom shaft cover, and the liquid storage ring is fixedly arranged on the outer wall of the bottom shaft cover; the inner wall of the ring valve and the outer wall of the liquid storage ring form an upper cavity and a lower cavity; an annular cavity is formed after the liquid storage ring and the ring valve are installed, and the annular cavity is a liquid storage cavity; the bottom of the ring valve is arranged at one side of the position corresponding to the feeding through hole, a water spraying seat is inserted into the water spraying seat, a water spraying seat through hole is formed in the water spraying seat, the water spraying seat through hole is communicated with the lower cavity, and a first channel communicated with the lower cavity and the outer wall of the ring valve is formed in the side wall of the bottom of the ring valve.
As an alternative of the technical scheme of the invention, an annular sealing gasket is arranged at the upper part of the deslagging hole outside the bottom shaft cover, a pressing cap for fixing the annular sealing gasket is arranged outside the annular sealing gasket, when the ring valve moves upwards, the ring valve abuts against and compacts the annular sealing gasket to block the deslagging hole, and when the ring valve moves downwards, the ring valve is far away from the annular sealing gasket to expose the deslagging hole.
As an alternative of the technical scheme of the invention, a second channel for communicating the liquid storage cavity and the upper cavity is formed in the liquid storage ring, and working liquid is injected into the liquid storage cavity in advance.
As an alternative of the technical scheme of the invention, a ring valve protrusion is arranged on the inner wall of the bottom of the ring valve and faces the liquid storage cavity, the ring valve protrusion can extend into the liquid storage cavity, the liquid storage cavity is surrounded by the ring valve protrusion, the outer wall of the bottom shaft cover and the inner wall of the liquid storage cavity, and the volume of the liquid storage cavity is changed along with the up-and-down movement of the ring valve; the ring valve bulge is provided with a third channel for communicating the water spray seat through hole with the lower cavity; the diameter of the third channel is larger than the diameter of the first channel.
As an alternative of the technical solution of the present invention, the outer side wall radius r of the upper chamber11Inner radius r of the upper chamber12The radius r of the outer side wall of the lower cavity21The inner radius r of the lower cavity22The radius r of the outer side wall of the liquid storage cavity31The inner radius r of the liquid storage cavity32The following relationship is satisfied between the two components,
r11＝r21and is and
r22＝r31and is and
r12＞r22＞r32and is and
r11 2-r12 2＝r31 2-r32 2。
as an alternative of the technical scheme of the invention, a transverse blocking plate is arranged on the inner wall of the bottom of the liquid storage ring and faces the bottom shaft cover, and the liquid storage cavity is defined by the transverse blocking plate, the inner wall of the liquid storage ring and the outer wall of the middle part of the bottom shaft cover.
As an alternative of the technical scheme of the invention, a fourth channel for communicating the liquid storage cavity and the lower cavity is arranged on the bottom shaft cover, the communication position of the fourth channel and the liquid storage cavity is positioned at the upper part of the liquid storage cavity, the distance a from the communication position of the fourth channel and the lower cavity to the axis of the bottom shaft cover is smaller than the distance b from the through hole of the water spray seat to the axis of the bottom shaft cover, a water spray baffle plate is arranged above the water spray seat, and the water spray baffle plate is arranged towards the direction far away from the axis of the bottom shaft cover.
As an alternative of the technical solution of the present invention, the outer side wall radius r of the upper chamber11Inner radius r of the upper chamber12The radius r of the outer side wall of the lower cavity21The inner radius r of the lower cavity22The following relationship is satisfied between the two components,
r21 2-r22 2＞r11 2-r12 2。
as an alternative of the technical scheme of the invention, an O-shaped sealing ring is embedded at the contact position of the inner wall of the ring valve and the outer wall of the bottom shaft cover, an O-shaped sealing ring is embedded at the contact position of the inner wall of the ring valve and the outer wall of the liquid storage ring, and an O-shaped sealing ring is embedded at the contact position of the liquid storage ring and the outer wall of the bottom shaft cover.
The utility model provides a tubular separating centrifuge rotary drum, includes the rotary drum barrel, the upper portion of rotary drum barrel is provided with the liquid outlet, its characterized in that, the sub-unit connection of rotary drum barrel has the bottom shaft lid subassembly, the outer wall of rotary drum barrel with the inner wall fixed connection of bottom shaft lid, the inner wall of rotary drum barrel with the outer wall fixed connection of fender charging tray, insert a feeding nozzle who is used for the feeding in the feed through hole.
The invention has the beneficial effects that:
compared with the traditional tubular separator, the separator using the bottom shaft cover assembly and the rotary drum in the scheme of the invention can realize automatic slag discharge without stopping, for example, the tubular separator with the production capacity of 600L/H has the single-machine yield of only 200L/H when the solid concentration of the material is 5 percent. The scheme of the invention can lead the tubular separator to be in an automatic slag discharging working mode, automatically discharge solids in production, increase the single machine yield by 3 times as high as 600L/h, and has more obvious advantages for materials with higher solid content. In addition, a liquid storage cavity is additionally arranged, so that when the volume of the upper cavity is reduced, the working liquid in the upper cavity is contained by the liquid storage cavity; when the volume of the upper cavity is increased, the working liquid can be supplemented by the liquid storage cavity, the centrifugal hydraulic pressure of the upper cavity is improved, the centrifugal hydraulic pressure for pushing the ring valve to rise is further improved, and the sealing stability of the slag discharge hole is finally improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic diagram of a drum of a prior art tubular separator;
FIG. 2 is a schematic structural view of a drum of the tubular separator of the present invention;
FIG. 3 is a schematic cross-sectional view of a bottom shaft cover assembly with a slag hole plugged in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a middle ring valve according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a bottom shaft cover assembly with a slag hole in an open state according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a bottom shaft cover assembly in accordance with a second embodiment of the present invention;
fig. 7 is a partial enlarged view of a portion a in fig. 6.
Reference numerals:
100-a drum head; 200-a drum; 300-a bottom shaft cover assembly; 310-bottom shaft cover; 311-slag discharge holes; 312-a fourth channel; 313-feed through hole; 320-material blocking plate; 321-an overflow channel; 330-annular sealing gasket; 340-pressing a cap; 350-ring valve; 351-a first channel; 352-ring valve projection; 353 — a third channel; 360-liquid storage ring; 361-a second channel; 362-transverse blanking plate; 370-O-ring seals; 391-upper chamber; 392-a reservoir chamber; 393-a lower cavity; 394 — a first cavity; 410-a water spraying seat; 411-water spray seat through hole; 412-water spray seat baffle; 420-feed nozzle.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the description of the embodiments, the terms "disposed," "connected," and the like are to be construed broadly unless otherwise explicitly specified or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; either directly or through an intervening medium, or through internal communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
The conventional tubular separator drum is shown in fig. 1, and is composed of a drum head 100, a drum barrel 200 and a bottom shaft cover assembly 300, as shown in fig. 2, the invention is mainly greatly improved for the bottom shaft cover assembly on the basis of the conventional tubular separator drum, and before the technical scheme of the invention is introduced, the concept of centrifugal hydraulic pressure is firstly clarified.
When the centrifuge rotates at a high speed, the liquid in the rotary drum forms centrifugal hydraulic pressure in a centrifugal force field, and the pressure of the centrifugal hydraulic pressure is calculated by the following formula:
wherein:
p-centrifugal hydraulic pressure;
gamma-liquid gravity;
omega-drum angular velocity;
r-liquid ring outer radius;
r-liquid ring inner radius;
g-acceleration of gravity;
the centrifugal hydraulic pressure is mainly influenced by the radius difference of the liquid ring and is independent of the height of the liquid ring under the condition of the same rotating speed.
The technical solution of the present invention is explained in detail below with reference to two embodiments.
The first embodiment is as follows:
as shown in fig. 3, the bottom shaft cover assembly 300 includes a bottom shaft cover 310, a material stopping disk 320, an annular sealing gasket 330, a pressing cap 340, a ring valve 350, a liquid storage ring 360 and O-ring seals 370 of various specifications, these components form a plurality of chambers, an upper chamber 391, a liquid storage chamber 392, a lower chamber 393 and a first cavity 394 for depositing solid sediments, and the O-ring seals 370 play a role in sealing liquid and preventing leakage, thereby ensuring smooth operation of the mechanism. The annular sealing gasket 330 is fixed on the bottom shaft cover 310 through the pressing cap 340, so that the side surface of the annular sealing gasket 330 is compacted, and the leakage of materials from the edge of the annular sealing gasket 330 after being pressed is avoided.
The material blocking disc 320 is provided with an overflow channel 321 for overflowing separated liquid, the inner wall of the bottom shaft cover 310 is provided with a plurality of slag discharging holes 311 at the position close to the lower end face of the material blocking disc 320, the holes are through holes with certain shapes and communicated with the outside, the number and the size of the holes are properly increased on the premise of ensuring the mechanical strength, and the accumulation of solid materials between two adjacent holes is reduced.
In addition, the water spraying seat 410 is installed on the lower supporting mechanism of the rotary drum outside the bottom shaft cover 310, the water spraying seat 410 is inserted from the bottom of the ring valve 350, the water spraying seat through hole 411 is formed inside the water spraying seat 410, the water spraying seat through hole 411 is in through connection with the lower cavity 393, and the first channel 351 penetrating through the lower cavity 393 and the outer wall of the ring valve 350 is formed on the side wall of the bottom of the ring valve 350.
The liquid storage ring 360 is provided with a second channel 361 for communicating the liquid storage cavity 392 with the upper cavity 391, and the working liquid in the liquid storage cavity 392 can be water or other liquids, so long as the selection is proper, the use requirement can be met. In general, the working fluid is selected based on the following principles:
1) the price is low;
2) low viscosity and easy flowing;
3) is not flammable, explosive and volatile;
4) has no corrosion to metal, rubber and other materials.
In order to conveniently add materials to be separated into the rotary drum, a feeding through hole 313 communicated with the first cavity 394 is formed in the bottom surface of the bottom shaft cover 310, and the feeding through hole 313 is used for inserting a feeding nozzle 420; wherein the feed nozzle 420 is installed below the rotating drum.
The water spraying seat 410 and the feeding nozzle 420 are fixed, do not participate in the rotation of the rotary drum, and keep a certain safe distance from the rotary piece, so that the rubbing in the work process is avoided.
In this embodiment, the annular valve protrusion 352 is disposed on the inner wall of the bottom of the annular valve 350 and faces the reservoir 392, the annular valve protrusion 352 can extend into the reservoir 392, the annular valve protrusion 352 is provided with a third channel 353 communicating the water spray seat through hole 411 and the lower cavity 393, and the diameter of the third channel 353 is larger than that of the first channel 351.
Of ring valves 350The concrete structure is shown in figure 4, the radius r of the outer side wall of the upper cavity11Inner radius r of the upper chamber12The radius r of the outer side wall of the lower cavity21Inner radius r of lower cavity22Outer side wall radius r of liquid storage cavity31Inner radius r of the liquid storage cavity32The following relationship is satisfied between the two components,
r11＝r21and is and
r22＝r31and is and
r12＞r22＞r32and is and
r11 2-r12 2＝r31 2-r32 2。
after the equipment is started, the rotary drum rotates at a high speed along the axis of the rotary drum, the working liquid in the liquid storage cavity 392 enters the upper cavity 391 through the second channel 361 and rotates along with the upper cavity 391 to generate centrifugal hydraulic pressure P1This pressure acts on the ring valve 350, causing the ring valve 350 to move upward, compressing against the annular seal 330. By calculation with reference to the sealing conditions of the flange, the force exerted by the ring valve 350 on the annular seal 330 is about 30 times greater than the pressure generated by the solid material in the first cavity 394 where the solids of the drum settle, closing the discharge hole 311. The material containing solids enters the bottom shaft cover 310 through the feeding nozzle 420, the solids in the material are settled in a first cavity 394 formed by the combination of the bottom shaft cover 310 and the material blocking disc 320 under the action of centrifugal force and are stacked around the slag discharge hole 311, and clear liquid overflows from an overflow channel 321 of the material blocking disc 320 and moves upwards, and finally flows out from a liquid outlet at the upper part of the rotary drum.
When slag discharge is required, the operation water enters the lower cavity 393 through the water spray socket 410 and the third passage 353. Due to the outer sidewall radius r of upper chamber 39111And an outer sidewall radius r of the lower cavity 39321Equal, and the inner radius r of the upper chamber12Inner radius of lower chamber r22And thus the hydraulic pressure P of the liquid in the lower chamber 3932Greater than the hydraulic pressure P of the liquid in upper chamber 3911The ring valve 350 is pushed to move downwards, so that the volume of the upper chamber 391 is reduced, the working fluid is gradually pressed back to the fluid storage chamber 392, and the working fluid in the fluid storage chamber 392 forms centrifugal hydraulic pressureP3As the volume of upper chamber 391 is reduced, more and more working fluid is stored in reservoir 392, resulting in P3Becomes larger and larger, so that the centrifugal hydraulic pressure acting downward on the ring valve 350 is P2+P3. As shown in fig. 5, the slag discharge holes 311 are opened and the solid sludge is thrown out of the drum by the centrifugal force.
After the completion of the slag discharge, the operation water is closed, and the operation water in the lower chamber 393 is discharged through the first passage 351, so that the centrifugal hydraulic pressure P of the lower chamber 393 is increased1Gradually decreases until it is 0. Due to r11＝r21，r22＝r31And r is12＞r22＞r32Therefore, under the action of centrifugal hydraulic pressure, the working fluid in the reservoir 392 flows back to the upper chamber 391 through the second channel 361, and P3Gradually decreasing until 0, the hydraulic pressure P of the liquid in the upper chamber 3911Under the action of the ring valve 350, the ring valve 350 moves upwards again to block the slag discharge hole 311.
In addition, since r is11 2-r12 2＝r31 2-r32 2That is, the annular projected area of upper chamber 391 in the axial direction is equal to the annular projected area of reservoir chamber 392 in the axial direction. So when ring valve 350 is lowered, the reduced volume of upper chamber 391 equals the increased volume of reservoir chamber 392; as ring valve 350 is raised, the volume of upper chamber 391 increases, equal to the volume of reservoir chamber 392 decreases. The design mode enables the ring valve 350, the bottom shaft cover 310 and the liquid storage ring 360 to form a double-piston structure, so that the volume of the liquid storage cavity 392 and the volume of the upper cavity 391 synchronously and correspondingly change along with the reciprocating motion of the ring valve 350, air resistance can not occur even though no air hole communicated with the outside exists, and working liquid is not lost.
In addition, through the calculation of the flow rate, an appropriate first channel 351 is machined, an appropriate operating liquid pump is selected according to the flow rate of the first channel 351, the flow rate of the pump needs to be larger than that of the first channel 351, and the difference between the two is the operating water flow rate. The ratio of the volume of the lower cavity 393 to the operating water flow is the opening time of the slag discharge hole 311.
Example two:
as shown in fig. 6 and 7, the structure of the liquid storage ring 360 in this embodiment is different from that in the first embodiment, specifically, a transverse blocking plate 362 is disposed on the inner bottom wall of the liquid storage ring 360 toward the bottom shaft cover 310, and a liquid storage cavity 392 is defined between the transverse blocking plate 362 and the inner side wall of the liquid storage ring 360 and the outer middle wall of the bottom shaft cover 310. Therefore, in this embodiment, the volume of the reservoir 392 does not change as the ring valve 350 moves up and down during actual operation.
The bottom shaft cover 310 is provided with a fourth channel 312 which is communicated with the liquid storage cavity 392 and the lower cavity 393, and the fourth channel 312 is arranged to effectively avoid air resistance caused by the change of the volume of the upper cavity 391 in the movement of the ring valve 350.
The communication of the fourth channel 312 to the reservoir 392 is at the upper portion of the reservoir 392,
in this embodiment, the outer sidewall radius r of the upper chamber11Inner radius r of the upper chamber12The radius r of the outer side wall of the lower cavity21The inner radius r of the lower cavity22The following relationship is satisfied between the two components,
r21 2-r22 2＞r11 2-r12 2。
as in the first embodiment, reservoir 392 has been previously filled with a dose of working fluid. After the device is started, the rotary drum rotates at a high speed along the axis of the rotary drum, the working fluid in the fluid storage cavity 392 enters the upper cavity 391 through the second channel 361, rotates along with the upper cavity 391 and generates centrifugal hydraulic pressure, and the centrifugal hydraulic pressure is applied to the ring valve 350, so that the ring valve 350 moves upwards and is compacted with the annular sealing gasket 330 to seal the slag discharge hole 311. The material is through feeding nozzle 420 and is the inside of certain angle entering bottom shaft cover 310, and the solid receives the effect of centrifugal force to settle to the first cavity 394 that bottom shaft cover 310 and striker plate 320 combination formed, piles up around arranging the cinder hole 311, and clear liquid overflows from the overflow path 321 of striker plate 320 internal diameter department to upward movement, finally flows out by the upper portion liquid outlet of rotary drum.
When slag discharge is required, the operation water enters the lower cavity 393 through the water spray stand 410. Since the distance a between the fourth channel 312 and the lower cavity 393 is less than the distance b between the seat hole 411 and the bottom shaft cover 310. A water spray baffle 412 is disposed above the water spray base 410, and the water spray baffle 412 is disposed away from the axis of the bottom shaft cover 310. The operation water introduced into the lower chamber 393 from the nozzle holder 410 does not enter the reservoir 392 through the fourth passage 312.
Due to r21 2-r22 2＞r11 2-r12 2Therefore, the centrifugal hydraulic pressure generated by the operation water in the lower cavity 393 is larger than the centrifugal hydraulic pressure generated by the working fluid in the upper cavity 391, the hydraulic pressure difference between the operation water and the working fluid pushes the ring valve 350 to move downwards, the slag discharge hole 311 is opened, and the solid sediment is thrown out of the rotary drum under the action of the centrifugal force.
When the ring valve 350 moves downward, the working fluid in the upper chamber 391 flows back under pressure and flows into the reservoir chamber 392 through the second channel 361, and since the upper chamber 391 and the reservoir chamber 392 are communicated with the atmosphere through the fourth channel 312, the change of the volume of the upper chamber 391 cannot generate air resistance. And because the communication between the fourth channel 312 and the reservoir 392 is located at the upper portion of the reservoir 392 near the central axis, the working fluid in the reservoir 392 is prevented from flowing out of the fourth channel 312.
After the slag discharge is completed, the operation water is closed, the operation water in the lower chamber 393 is discharged through the first passage 351, the pressure of the lower chamber 393 disappears, the working fluid in the fluid reservoir 392 flows back into the upper chamber 391 through the second passage 361, and the ring valve 350 moves up again under the centrifugal pressure of the upper chamber 391 to close the slag discharge hole 311.
Compared with the first embodiment, the solution of the present embodiment has a low requirement on the amount of the working fluid injected into the fluid storage chamber 392 in advance, and is relatively simple and convenient to manufacture and install.
The technical scheme of above two embodiments all is provided with epicoele and cavity of resorption, and through the centrifugal hydraulic pressure difference that two intracavity liquids formed, promote the ring valve up-and-down reciprocating motion, reach the purpose of opening and sealing the row's cinder hole, and then can realize not shutting down and arrange sediment automatically, improved tubular separator's separation efficiency greatly, especially to the material that contains solid volume height, the advantage is more obvious. .
In addition, a liquid storage cavity is additionally arranged, so that when the volume of the upper cavity is reduced, the working liquid in the upper cavity is contained by the liquid storage cavity; when the volume of the upper cavity is increased, the working liquid can be supplemented by the liquid storage cavity, the centrifugal hydraulic pressure of the upper cavity is improved, the centrifugal hydraulic pressure for pushing the ring valve to rise is further improved, and the sealing stability of the slag discharge hole is finally improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein. In addition, the technical solutions between the various embodiments can be combined with each other, but must be based on the realization of those skilled in the art; where combinations of features are mutually inconsistent or impractical, such combinations should not be considered as being absent and not within the scope of the claimed invention.
Claims (10)
1. A bottom shaft cover assembly for a rotating drum of a tubular separator comprises a bottom shaft cover and is characterized in that a material blocking disc is arranged on the inner side wall of the upper portion of the bottom shaft cover, a first cavity for containing solid sediments is defined by the material blocking disc and the bottom shaft cover, an overflow channel is formed in the material blocking disc, and a plurality of slag discharging holes are formed in the inner wall of the bottom shaft cover, close to the lower end face of the material blocking disc;
a feeding through hole communicated with the first cavity is formed in the bottom surface of the bottom shaft cover and used for inserting a feeding nozzle;
a ring valve capable of moving up and down is coaxially arranged outside the bottom shaft cover and the bottom shaft cover, a liquid storage ring is further arranged between the ring valve and the bottom shaft cover, and the liquid storage ring is fixedly arranged on the outer wall of the bottom shaft cover; the inner wall of the ring valve and the outer wall of the liquid storage ring form an upper cavity and a lower cavity;
an annular cavity is formed after the liquid storage ring and the ring valve are installed, and the annular cavity is a liquid storage cavity;
the bottom of the ring valve is arranged at one side of the position corresponding to the feeding through hole, a water spraying seat is inserted into the water spraying seat, a water spraying seat through hole is formed in the water spraying seat, the water spraying seat through hole is communicated with the lower cavity, and a first channel communicated with the lower cavity and the outer wall of the ring valve is formed in the side wall of the bottom of the ring valve.
2. The bottom shaft cover assembly for the rotating drum of the tubular separator as claimed in claim 1, wherein an annular sealing gasket is arranged on the upper portion of the deslagging hole outside the bottom shaft cover, a pressing cap for fixing the annular sealing gasket is arranged outside the annular sealing gasket, when the ring valve moves upwards, the ring valve abuts against and compacts the annular sealing gasket to seal the deslagging hole, and when the ring valve moves downwards, the ring valve is away from the annular sealing gasket to expose the deslagging hole.
3. The bottom shaft cover assembly for the rotating drum of the tubular separator as claimed in claim 1, wherein the liquid storage ring is provided with a second channel for communicating the liquid storage cavity and the upper cavity, and the liquid storage cavity is filled with working liquid in advance.
4. The bottom shaft cover assembly for the rotating drum of the tubular separator as claimed in claim 3, wherein a ring valve protrusion is arranged on the inner bottom wall of the ring valve and faces the liquid storage cavity, the ring valve protrusion can extend into the liquid storage cavity, the liquid storage cavity is defined by the ring valve protrusion, the outer wall of the bottom shaft cover and the inner wall of the liquid storage cavity, and the volume of the liquid storage cavity is changed along with the up-and-down movement of the ring valve; the ring valve bulge is provided with a third channel for communicating the water spray seat through hole with the lower cavity; the diameter of the third channel is larger than the diameter of the first channel.
5. The bottom shaft cover assembly for a drum of a pipe separator as recited in claim 4, wherein the outer sidewall radius r of the upper chamber11Inner radius r of the upper chamber12The radius r of the outer side wall of the lower cavity21The inner radius r of the lower cavity22The radius r of the outer side wall of the liquid storage cavity31The inner radius r of the liquid storage cavity32The following relationship is satisfied between the two components,
r11＝r21and is and
r22＝r31and is and
r12＞r22＞r32and is and
r11 2-r12 2＝r31 2-r32 2。
6. the bottom shaft cover assembly for the rotary drum of the tubular separator as claimed in claim 3, wherein a transverse blocking plate is arranged on the inner wall of the bottom of the liquid storage ring and faces the bottom shaft cover, and the liquid storage cavity is defined by the transverse blocking plate, the inner wall of the liquid storage ring and the outer wall of the middle part of the bottom shaft cover.
7. The bottom shaft cover assembly for the rotating drum of the tubular separator as claimed in claim 6, wherein a fourth channel for communicating the liquid storage chamber and the lower chamber is provided on the bottom shaft cover, the communication position of the fourth channel and the liquid storage chamber is located at the upper part of the liquid storage chamber, the distance a from the communication position of the fourth channel and the lower chamber to the axis of the bottom shaft cover is smaller than the distance b from the through hole of the water spray seat to the axis of the bottom shaft cover, a water spray baffle is provided above the water spray seat, and the water spray baffle is arranged towards the direction away from the axis of the bottom shaft cover.
8. The bottom shaft cover assembly for a drum of a pipe separator as recited in claim 6, wherein the outer sidewall radius r of the upper chamber11Inner radius r of the upper chamber12The radius r of the outer side wall of the lower cavity21The inner radius r of the lower cavity22The following relationship is satisfied between the two components,
r21 2-r22 2＞r11 2-r12 2。
9. the bottom shaft cover assembly for the rotating drum of the tubular separator as claimed in any one of claims 1 to 8, wherein an O-shaped sealing ring is embedded at the contact position of the inner wall of the ring valve and the outer wall of the bottom shaft cover, an O-shaped sealing ring is embedded at the contact position of the inner wall of the ring valve and the outer wall of the liquid storage ring, and an O-shaped sealing ring is embedded at the contact position of the liquid storage ring and the outer wall of the bottom shaft cover.
10. A tubular separator drum is characterized in that the drum comprises a drum barrel, a liquid outlet is arranged at the upper part of the drum barrel, the drum barrel is characterized in that the lower part of the drum barrel is connected with a bottom shaft cover assembly according to any one of claims 1 to 8, the outer wall of the drum barrel is fixedly connected with the inner wall of the bottom shaft cover, the inner wall of the drum barrel is fixedly connected with the outer wall of a material blocking plate, and a feeding nozzle for feeding is inserted into a feeding through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011273076.3A CN112354699A (en) | 2020-11-13 | 2020-11-13 | Bottom shaft cover assembly for tubular separator drum and tubular separator drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011273076.3A CN112354699A (en) | 2020-11-13 | 2020-11-13 | Bottom shaft cover assembly for tubular separator drum and tubular separator drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112354699A true CN112354699A (en) | 2021-02-12 |
Family
ID=74515693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011273076.3A Pending CN112354699A (en) | 2020-11-13 | 2020-11-13 | Bottom shaft cover assembly for tubular separator drum and tubular separator drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112354699A (en) |
-
2020
- 2020-11-13 CN CN202011273076.3A patent/CN112354699A/en active Pending
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