CN112138877A - Internal cleaning mechanism and cleaning method for spiral mandrel of horizontal screw machine - Google Patents

Internal cleaning mechanism and cleaning method for spiral mandrel of horizontal screw machine Download PDF

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Publication number
CN112138877A
CN112138877A CN202010799541.0A CN202010799541A CN112138877A CN 112138877 A CN112138877 A CN 112138877A CN 202010799541 A CN202010799541 A CN 202010799541A CN 112138877 A CN112138877 A CN 112138877A
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sleeve
water
horizontal screw
screw machine
spiral
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CN112138877B (en
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卢仁伟
高建生
王存林
杨超
曹艳兵
李网芹
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CSSC Nanjing Luzhou Machine Co Ltd
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CSSC Nanjing Luzhou Machine Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B15/00Other accessories for centrifuges
    • B04B15/06Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/20Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

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  • Cleaning In General (AREA)

Abstract

The invention relates to an internal cleaning mechanism of a spiral mandrel of a horizontal screw machine, which comprises a sleeve sleeved on a feeding pipe, wherein a closed cavity is formed between the sleeve and the feeding pipe, one end of the sleeve is provided with a water inlet connected with the outside, and the sleeve is provided with a plurality of cleaning nozzles. The invention has the advantages that the special cleaning mechanism is added in the spiral core shaft of the horizontal screw machine, so that the interior of the spiral core shaft of the horizontal screw machine can be thoroughly cleaned without dead angles under the condition of not disassembling the machine, and the requirements of special industries such as biological pharmacy, food and the like are met.

Description

Internal cleaning mechanism and cleaning method for spiral mandrel of horizontal screw machine
Technical Field
The invention relates to a cleaning mechanism and a cleaning method, in particular to a mechanism and a cleaning method for cleaning the interior of a spiral mandrel of a horizontal screw machine, and belongs to the technical field of engineering machinery.
Background
The horizontal screw machine is a universal device for carrying out solid-liquid separation by utilizing centrifugal force generated by high-speed rotation, after separated materials enter the rotary drum, solid phases rapidly settle to the inner wall of the rotary drum under the action of the centrifugal force due to density difference between solid and liquid, and liquid phases settle to the surface of the solid phases. The rotary drum and the spiral rotate in the same direction, a rotation speed difference exists between the rotary drum and the spiral, the solid phase is pushed to a slag outlet at the small end of the rotary drum under the action of the spiral, and the liquid phase is discharged through an internal centripetal pump on the shaft of the large end cover. In most cases, before the horizontal screw machine is stopped, the residues in the rotary drum of the horizontal screw machine can be cleaned by introducing cleaning liquid from the feeding pipe, and the type and the cleaning time of the cleaning liquid are generally determined according to actual working conditions. However, in some special industries, such as the biopharmaceutical industry and the food industry, the interior of a horizontal screw machine needs to be cleaned completely, particularly, the interior of a spiral mandrel needs to be cleaned without dead corners and any residue, so that the machine is generally disassembled, namely, the spiral is disassembled from a rotary drum, then water is introduced for internal washing, and the work of disassembling and assembling the machine needs 2-3 people for about 3 hours, which is time-consuming and labor-consuming. At this time, a spiral internal cleaning mechanism is required to be added in the horizontal screw machine, so that the interior of the spiral mandrel can be effectively cleaned under the condition of not disassembling the machine, and a cleaning dead angle is not reserved.
Disclosure of Invention
The invention aims to: aiming at the defects in the prior art, the mechanism and the method for cleaning the interior of the spiral mandrel of the horizontal screw machine under the condition of not disassembling the machine are provided, so as to meet the requirements of the horizontal screw machine in special industries.
In order to achieve the purpose, the invention provides an internal cleaning mechanism of a spiral mandrel of a horizontal screw machine, which comprises a sleeve sleeved on a feeding pipe, wherein a closed cavity is formed between the sleeve and the feeding pipe, one end of the sleeve is provided with a water inlet connected with the outside, and the sleeve is provided with a plurality of cleaning nozzles.
The invention further adopts the following technical scheme:
furthermore, six discontinuously-distributed nozzle mounting holes are formed in the position, extending into the spiral core shaft, of the sleeve, the nozzle mounting holes penetrate through the wall of the sleeve, and the cleaning nozzle is arranged in the nozzle mounting holes.
Furthermore, the cleaning nozzle is composed of a nozzle body, a water outlet hole and a dispersing block, the nozzle body is in a stepped cylindrical shape, the water outlet hole is formed in the center of the nozzle body, the dispersing block is arranged on the end face of the large-diameter portion of the nozzle body, the dispersing block is arranged around the water outlet hole, and a sealing sleeve is arranged on the small-diameter portion of the nozzle body.
Further, the cross section of the divergent block is semicircular or arched.
Furthermore, one end of the sleeve, which extends into the spiral core shaft, is provided with a shaft shoulder, two nozzle mounting holes are formed in the shaft shoulder, and the remaining four nozzle mounting holes are respectively arranged on the wall, close to the shaft shoulder, of the sleeve in a spaced and vertically staggered manner.
After adopting above-mentioned structure, washing nozzle structure and nozzle distribution position are through optimal design, can let the washing water wash any position of dabber inside to the at utmost, do not keep washing the dead angle.
Furthermore, the connecting parts of the sleeve and the feeding pipe are respectively provided with a first O-shaped ring, and the two ends of the feeding pipe and the two ends of the sleeve are sealed by the O-shaped rings, so that a closed cavity is formed between the feeding pipe and the sleeve.
Furthermore, annular first sealing grooves are respectively formed in the inner walls of the two ends of the sleeve, and first O-shaped rings are arranged in the first sealing grooves; the sleeve pipe is located the water inlet both sides and is equipped with annular second seal groove respectively, be equipped with second O type circle in the second seal groove, the water inlet links to each other with the inlet tube of taking the valve for guarantee that the sparge water gets into sheathed tube cavity.
Therefore, when the horizontal screw machine is required to be cleaned, the interior of the spiral core shaft of the horizontal screw machine can be cleaned only by opening the valve on the external flushing water inlet pipe.
Further, the outer diameter of the feeding pipe is 48 mm. Thus, the diameter of the outer circle of the feeding pipe is reduced, so that the sleeve can be conveniently added on the periphery of the feeding pipe.
The invention also provides a cleaning method of the internal cleaning mechanism of the spiral mandrel of the horizontal screw machine, which comprises the following steps:
the method comprises the following steps that firstly, a sleeve is designed, a plurality of cleaning nozzles are arranged at one end of the sleeve, a water inlet is formed in the other end of the sleeve, and the water inlet is connected with a water inlet pipe with a valve;
secondly, sleeving a sleeve on a feeding pipe positioned in the spiral mandrel, wherein a closed cavity is formed between the sleeve and the feeding pipe;
thirdly, when the horizontal screw machine is used for cleaning, a valve connected with external flushing water is opened, so that the flushing water enters the inner cavity of the sleeve from the water inlet;
fourthly, spraying washing water in the sleeve cavity from the washing nozzle, and recording the water outlet flow speed of the washing nozzle as v and the water flow pressure as p0The calculation method of the two is as follows:
Figure DEST_PATH_IMAGE002
Figure DEST_PATH_IMAGE004
wherein Q is the flow of flushing water in the sleeve, and d is the inner diameter of the cleaning nozzle; p is the pressure of the flow of the flushing water, p1Is the washing water static pressure.
The calculation formula of the washing water flow pressure p is as follows:
Figure DEST_PATH_IMAGE006
in the formula, ρ is the density of water, v is the effluent flow velocity, c is the flow velocity coefficient, and c is usually 0.95.
The invention has the advantages that the special cleaning mechanism is added in the spiral core shaft of the horizontal screw machine, so that the interior of the spiral core shaft of the horizontal screw machine can be thoroughly cleaned without dead angles under the condition of not disassembling the machine, and the requirements of special industries such as biological pharmacy, food and the like are met.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a cleaning mechanism of a horizontal screw machine in the prior art.
FIG. 2 is a schematic structural view of the internal cleaning mechanism of the spiral mandrel of the horizontal screw machine.
FIG. 3 is a schematic view of a cleaning nozzle according to the present invention.
Fig. 4 is a longitudinal sectional view of fig. 3.
Fig. 5 is a top view of fig. 3.
Fig. 6 is a schematic structural view of the sleeve of the present invention.
In the figure: the water spray nozzle comprises a rotary drum 1, a rotary drum 2, a spiral mandrel 3, a feed pipe 4, a sleeve 401, a nozzle mounting hole 402, a first sealing groove 403, a second sealing groove 404, a water inlet 404, a cleaning nozzle 5, a nozzle body 501, a dispersing block 502, a water outlet 503, a first O-shaped ring 6, a second O-shaped ring 7 and a valve 8.
Detailed Description
Example one
As shown in fig. 1, the existing cleaning mechanism for the horizontal screw machine comprises a rotary drum 1, a spiral mandrel 2 and a feeding pipe 3, wherein the spiral mandrel 2 is installed inside the rotary drum 1, the feeding pipe 3 is installed inside the spiral mandrel 2, water is fed from the feeding pipe 3 during cleaning of the horizontal screw machine, the inside of the rotary drum 1 is cleaned, however, a cleaning dead angle exists inside the spiral mandrel 2, and incomplete cleaning is caused.
As shown in fig. 2, the internal cleaning mechanism of the spiral mandrel of the horizontal screw machine comprises a sleeve 4 sleeved on a feed pipe 3, the outer diameter of the feed pipe 3 is reduced from 60mm to 48mm, the inner diameter is reduced from 51mm to 42mm, a closed cavity is formed between the sleeve 4 and the feed pipe 3, one end of the sleeve 4 is provided with a water inlet 404 connected with the outside, six cleaning nozzles 5 are arranged on the wall of the sleeve 4, namely, six nozzle mounting holes 401 distributed discontinuously are formed at the position of the sleeve 4 extending into the spiral mandrel 2, each nozzle mounting hole 401 penetrates through the wall of the sleeve 4, and the cleaning nozzles 5 are arranged in the nozzle mounting holes 401. The cleaning nozzle 5 is composed of a nozzle body 501, a water outlet 503 and dispersing blocks 502, the nozzle body 501 is in a stepped cylinder shape, the center of the nozzle body is provided with the water outlet 503 with the diameter of 3mm, a sealing sleeve is arranged outside the small-diameter part of the nozzle body 501, two dispersing blocks 502 are arranged on the end face of the large-diameter part of the nozzle body 501, and the two dispersing blocks 502 are arranged around two sides of the outer side of the water outlet 503, so that washing water can be fully dispersed through the dispersing blocks 502 after coming out of the water outlet 503, and the cleaning range of a single nozzle is larger and more sufficient. The cross-section of the emanator block 502 is semi-circular or arcuate, wherein the diameter of the semi-circular cross-section emanator block 502 is 13 mm.
In addition, annular first sealing grooves 402 are respectively formed in the inner walls of the two ends of the sleeve 4, a first O-ring 6 is arranged in each first sealing groove 402, and the two ends of the feed pipe 3 and the sleeve 4 are respectively sealed by the first O-rings 6, so that a closed cavity is formed between the feed pipe 3 and the sleeve 4. The two sides of the water inlet 404 at one end of the sleeve 4 are respectively provided with an annular second sealing groove 403, and a second O-shaped ring 7 is arranged in the second sealing groove 403, so that the two sides of the water inlet 404 are sealed by the second O-shaped ring 7 to prevent the leakage of flushing water and ensure that the flushing water enters the cavity quickly. The number of the water inlets 404 is four, the water inlets are evenly distributed at the right end of the sleeve 4, the cross section of the sleeve is in a step shape, and the water inlets 404 are connected with a water inlet pipe with a valve 8 and used for ensuring that washing water enters the cavity of the sleeve 4.
The installation position of the cleaning nozzle 5 is optimally designed to ensure that the water from the cleaning nozzle 5 can clean any part in the spiral. Specifically, one end of the sleeve 4 extending into the spiral mandrel 2 is provided with a shaft shoulder, the chamfer angle of the shaft shoulder is 15 degrees, two nozzle mounting holes 401 are formed in the shaft shoulder, the remaining four nozzle mounting holes 401 are arranged on the tube wall of the sleeve 4 close to the shaft shoulder in an interval and vertically staggered manner, the interval distance between the vertically staggered two nozzle mounting holes 401 is 70mm, and the distance between the nozzle mounting hole 401 closest to the shaft shoulder and the shaft shoulder is also 70 mm. The water flow velocity v and the water flow pressure p of the cleaning nozzle 50The calculation method of (2) is as follows:
Figure DEST_PATH_IMAGE002A
Figure DEST_PATH_IMAGE004A
wherein Q is the flow rate of the washing water in the casing 4, and d is the inner diameter of the washing nozzle 5; p is the dynamic pressure of water flow, and
Figure DEST_PATH_IMAGE006A
(p is density of water, v is flow rate of effluent, c is flow rate coefficient, c is usually 0.95), p1The washing water is subjected to static pressure. The optimal water outlet speed of the cleaning nozzle 5 is 4.5m/s, and the optimal water flow pressure is 0.21 Mpa.
The inside wiper mechanism of spiral dabber of spiral shell machine crouches of this embodiment has increased sleeve pipe 4 in inlet pipe 3 outside, adopts first O type circle 6 to seal at its both ends, makes to form confined cavity between sleeve pipe 4 and the inlet pipe 3, at the sparge water inlet 404 that sleeve pipe 4's one end design and external continuous, can carry out the rinse thoroughly to crouching spiral shell machine inside, does not keep the washing dead angle, satisfies the special trade needs of spiral shell machine crouch. When the horizontal screw machine needs to be fully and thoroughly cleaned, the horizontal screw machine does not need to be disassembled, and only the valve 8 of external flushing water needs to be opened, so that the horizontal screw machine is convenient and quick.
In this embodiment, the method for cleaning the internal cleaning mechanism of the spiral mandrel of the horizontal screw machine includes the following steps:
the method comprises the following steps that firstly, a sleeve is designed, a plurality of cleaning nozzles are arranged at one end of the sleeve, a water inlet is formed in the other end of the sleeve, and the water inlet is connected with a water inlet pipe with a valve;
secondly, sleeving a sleeve on a feeding pipe positioned in the spiral mandrel, wherein a closed cavity is formed between the sleeve and the feeding pipe;
thirdly, when the horizontal screw machine is used for cleaning, a valve connected with external flushing water is opened, so that the flushing water enters the inner cavity of the sleeve from the water inlet;
fourthly, washing water in the sleeve cavity is sprayed from washingThe nozzle sprays, the outlet flow speed of the cleaning nozzle is recorded as v, and the water flow pressure is recorded as p0The calculation method of the two is as follows:
Figure DEST_PATH_IMAGE002AA
Figure DEST_PATH_IMAGE004AA
wherein Q is the flow of flushing water in the sleeve, and d is the inner diameter of the cleaning nozzle; p is the pressure of the flow of the flushing water, p1Is the washing water static pressure. The calculation formula of the washing water flow pressure p is as follows:
Figure DEST_PATH_IMAGE006AA
in the formula, ρ is the density of water, v is the effluent flow velocity, c is the flow velocity coefficient, and c is usually 0.95.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides an inside wiper mechanism of spiral dabber of spiral shell machine crouches which characterized in that: including the sleeve pipe of cover on the inlet pipe, be formed with the confined cavity between sleeve pipe and the inlet pipe, sheathed tube one end is equipped with the water inlet that links to each other with the external world be equipped with a plurality of washing nozzles on the sleeve pipe.
2. The internal cleaning mechanism for the spiral mandrel of the horizontal screw machine according to claim 1, wherein: six discontinuously-distributed nozzle mounting holes are formed in the position, extending into the spiral core shaft, of the sleeve, the nozzle mounting holes penetrate through the wall of the sleeve, and the cleaning nozzles are arranged in the nozzle mounting holes.
3. The internal cleaning mechanism for the spiral mandrel of the horizontal screw machine according to claim 2, wherein: the cleaning nozzle is composed of a nozzle body, a water outlet hole and a dispersing block, wherein the nozzle body is in a stepped cylinder shape, the center of the nozzle body is provided with the water outlet hole, the dispersing block is arranged on the end face of the large-diameter part of the nozzle body and is arranged around the water outlet hole, and the small-diameter part of the nozzle body is provided with a sealing sleeve.
4. The internal cleaning mechanism for the spiral mandrel of the horizontal screw machine according to claim 3, wherein: the cross section of the divergent block is semicircular or arched.
5. The internal cleaning mechanism for the spiral mandrel of the horizontal screw machine according to claim 2, wherein: the spiral core shaft is characterized in that one end of the sleeve, which extends into the spiral core shaft, is provided with a shaft shoulder, two nozzle mounting holes are formed in the shaft shoulder, and the remaining four nozzle mounting holes are respectively arranged on the wall, close to the shaft shoulder, of the sleeve in a spaced and vertically staggered mode.
6. The internal cleaning mechanism for the spiral mandrel of the horizontal screw machine according to claim 1, wherein: and the joints of the sleeve and the feed pipe are respectively provided with a first O-shaped ring.
7. The internal cleaning mechanism for the spiral mandrel of the horizontal screw machine according to claim 6, wherein: annular first sealing grooves are respectively formed in the inner walls of the two ends of the sleeve, and first O-shaped rings are arranged in the first sealing grooves; and the sleeve pipe is positioned on two sides of the water inlet and is respectively provided with an annular second sealing groove, a second O-shaped ring is arranged in the second sealing groove, and the water inlet is connected with a water inlet pipe with a valve.
8. The internal cleaning mechanism for the spiral mandrel of the horizontal screw machine according to claim 1, wherein: the external diameter of the feed pipe is 48 mm.
9. A method of cleaning a mechanism as claimed in any one of claims 1 to 8, including the steps of:
the method comprises the following steps that firstly, a sleeve is designed, a plurality of cleaning nozzles are arranged at one end of the sleeve, a water inlet is formed in the other end of the sleeve, and the water inlet is connected with a water inlet pipe with a valve;
secondly, sleeving a sleeve on a feeding pipe positioned in the spiral mandrel, wherein a closed cavity is formed between the sleeve and the feeding pipe;
thirdly, when the horizontal screw machine is used for cleaning, a valve connected with external flushing water is opened, so that the flushing water enters the inner cavity of the sleeve from the water inlet;
fourthly, spraying washing water in the sleeve cavity from the washing nozzle, and recording the water outlet flow speed of the washing nozzle as v and the water flow pressure as p0The calculation method of the two is as follows:
Figure 516766DEST_PATH_IMAGE002
Figure 230644DEST_PATH_IMAGE004
wherein Q is the flow of flushing water in the sleeve, and d is the inner diameter of the cleaning nozzle; p is the pressure of the flow of the flushing water, p1Is the washing water static pressure.
10. The method for cleaning a mechanism according to claim 9, wherein the washing water flowing pressure p is calculated as follows:
Figure 416906DEST_PATH_IMAGE006
in the formula, ρ is the density of water, v is the effluent flow velocity, c is the flow velocity coefficient, and c is usually 0.95.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115582226A (en) * 2022-11-03 2023-01-10 坚纳森(青岛)机械有限公司 A centrifuge for cleaning the inner wall of the spiral

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193643B1 (en) * 1996-01-02 2001-02-27 Noxon Ab Decantation centrifuge with peripheral washing nozzles
CN201524607U (en) * 2009-10-31 2010-07-14 海申机电总厂(象山) Horizontal spiral discharge settling centrifuge with automatic flushing function
CN202725362U (en) * 2012-04-16 2013-02-13 浙江真奇汽车零部件有限公司 Washing nozzle for automobile windscreen
CN108067355A (en) * 2016-11-16 2018-05-25 浙江三拓重工科技有限公司 A kind of bipyramid cocurrent decanter centrifuge
CN213886672U (en) * 2020-08-11 2021-08-06 南京中船绿洲机器有限公司 Inside wiper mechanism of spiral dabber of spiral shell machine crouches

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6193643B1 (en) * 1996-01-02 2001-02-27 Noxon Ab Decantation centrifuge with peripheral washing nozzles
CN201524607U (en) * 2009-10-31 2010-07-14 海申机电总厂(象山) Horizontal spiral discharge settling centrifuge with automatic flushing function
CN202725362U (en) * 2012-04-16 2013-02-13 浙江真奇汽车零部件有限公司 Washing nozzle for automobile windscreen
CN108067355A (en) * 2016-11-16 2018-05-25 浙江三拓重工科技有限公司 A kind of bipyramid cocurrent decanter centrifuge
CN213886672U (en) * 2020-08-11 2021-08-06 南京中船绿洲机器有限公司 Inside wiper mechanism of spiral dabber of spiral shell machine crouches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115582226A (en) * 2022-11-03 2023-01-10 坚纳森(青岛)机械有限公司 A centrifuge for cleaning the inner wall of the spiral

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