CN114669066B - MVR evaporation concentration system - Google Patents
MVR evaporation concentration system Download PDFInfo
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- CN114669066B CN114669066B CN202210295624.5A CN202210295624A CN114669066B CN 114669066 B CN114669066 B CN 114669066B CN 202210295624 A CN202210295624 A CN 202210295624A CN 114669066 B CN114669066 B CN 114669066B
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- cylinder
- gear
- evaporation
- cleaning
- driving motor
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- 238000001704 evaporation Methods 0.000 title claims abstract description 174
- 230000008020 evaporation Effects 0.000 title claims abstract description 120
- 238000004140 cleaning Methods 0.000 claims abstract description 52
- 239000011552 falling film Substances 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 230000001680 brushing effect Effects 0.000 claims description 20
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 10
- 229940045872 sodium percarbonate Drugs 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 17
- 239000001301 oxygen Substances 0.000 description 17
- 229910052760 oxygen Inorganic materials 0.000 description 17
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 12
- 235000017491 Bambusa tulda Nutrition 0.000 description 12
- 241001330002 Bambuseae Species 0.000 description 12
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 12
- 239000011425 bamboo Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 238000005201 scrubbing Methods 0.000 description 6
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000011344 liquid material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/06—Evaporators with vertical tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
Abstract
The application relates to an MVR evaporation concentration system, and belongs to the technical field of MVR evaporation concentration equipment. The device comprises a falling film evaporation device, a separator and a compression fan which are communicated end to end through a gas pipe, wherein a plurality of evaporation pipes are arranged in the evaporation device, a cleaning component and a lifting component are arranged in the evaporation pipes, the lifting component is connected above the cleaning component and is used for cleaning the inner wall of the evaporation pipes, the cleaning component and the lifting component move towards the bottom of the evaporation pipes under the action of gravity, and after the cleaning component moves to the bottom of the evaporation pipes, the lifting component drives the cleaning component to move upwards along the evaporation pipes. The application has the effect of being convenient for cleaning the evaporating pipes in the MVR evaporating and concentrating system.
Description
Technical Field
The application relates to the technical field of MVR evaporation and concentration equipment, in particular to an MVR evaporation and concentration system.
Background
MVR is an abbreviation of Mechanical Vapour Recompression, meaning mechanical vapor recompression, and the MVR evaporation concentration system utilizes a vapor compressor to recompress low-grade noncondensable gas or vapor discharged by a unit, thereby improving the vapor taste. The secondary steam generated by recompression is conveyed back to the unit for recycling, so that fresh steam is saved, and meanwhile, the steam compressor is driven by electric energy, so that energy is saved, and the economic benefit is remarkable particularly in areas with low electric power price.
The falling film evaporation device is an important component of the MVR evaporation system, a plurality of evaporation pipes are arranged in the falling film evaporation device, liquid materials form uniform membranous flow from top to bottom on the inner wall of the evaporation pipes, and the liquid materials are heated by steam at the outer wall of the evaporation pipes in the flowing process, so that vapor-liquid separation is realized. MVR evaporation systems often plug up the evaporation tubes due to fouling when handling liquids prone to fouling. The conventional treatment method is to open a falling film evaporation device, take out an evaporation tube, and clean the inner wall of the evaporation tube by using an electric flexible shaft brush tube device.
With respect to the related art described above, the inventor considers that it takes a lot of time to disassemble and install the evaporation tube, cleaning of the evaporation tube is inconvenient, normal production order is seriously affected, and production cost is increased.
Disclosure of Invention
In order to facilitate cleaning of evaporating pipes in an MVR evaporating and concentrating system, the application provides an MVR evaporating and concentrating system.
The MVR evaporation concentration system provided by the application adopts the following technical scheme:
the utility model provides a MVR evaporation concentration system, includes falling film evaporation plant, separator and the compression fan of intercommunication through the gas-supply pipe head and the tail, it is provided with many evaporating pipes to arrange in the evaporation plant, be provided with cleaning module in the evaporating pipe and play to rise the subassembly, play to rise the subassembly and connect in the cleaning module top, the cleaning module is used for clearing up the inner wall of evaporating pipe, cleaning module and play to rise the subassembly and remove to evaporating pipe bottom under the effect of gravity, remove to being close to evaporating pipe bottom after, play to rise subassembly drive cleaning module and follow evaporating pipe upward movement.
Through adopting above-mentioned technical scheme, when clearing up the evaporating pipe, pour into the clear water in the evaporating pipe, place the clearance subassembly and play to rise the subassembly in the evaporating pipe, the clearance subassembly moves downwards along the length direction of evaporating pipe with play to the subassembly under the effect of gravity, after moving to being close to the bottom of evaporating pipe, play to rise the subassembly and drive the clearance subassembly and upwards move along the length direction of evaporating pipe, the clearance subassembly is cleared up the inner wall of evaporating pipe at the in-process that removes, realize the clearance to evaporating pipe inner wall, thereby need not to pull down the evaporating pipe just can clear up the inner wall of evaporating pipe, reach the effect of being convenient for clear up the scale deposit on the evaporating pipe inner wall.
Optionally, the clearance subassembly includes first cylinder, tool bit and driving piece, the driving piece sets up inside first cylinder, the tool bit rotates the lower extreme that sets up at first cylinder, the driving piece is connected and is used for driving the tool bit and rotates with the tool bit.
Through adopting above-mentioned technical scheme, driving piece drive tool bit rotates, and pivoted tool bit strikes off the scale deposit on the evaporating pipe inner wall, reaches the effect of being convenient for clear up the inner wall of evaporating pipe.
Optionally, the driving piece includes first driving motor, pivot, first gear and second gear, first driving motor sets up inside first cylinder, the coaxial rotation of pivot sets up inside first cylinder, first gear coaxial line sets up on first driving motor's output shaft, the second gear coaxial line sets up in the pivot, first holding tank that is used for holding first gear and second gear has been seted up in the first cylinder, first gear meshes with the second gear, the pivot downwardly extending is outside first cylinder, just tool bit and pivot coaxial line connection.
Through adopting above-mentioned technical scheme, first driving motor drives first gear and rotates, and the rotation of first gear drives the second gear rotation with meshing with it to drive the pivot and rotate, and then drive pivot epaxial tool bit rotates, reaches the pivoted effect of drive tool bit of being convenient for.
Optionally, play to rise the subassembly and include the second post, the second post cavity sets up, the internal level of second post is provided with the baffle, the baffle separates the second post in for the first cavity of lower part and the second cavity on upper portion, sodium percarbonate solid has been placed in the first cavity, set up the first one-way relief valve that is linked together with first cavity on the second post, be provided with the one-way relief valve of second on the baffle, be close to baffle department on the second post and be provided with the one-way valve that is linked together with the second cavity, still seted up the water injection hole that is linked together with the second cavity on the second post, be provided with the water retaining bolt on the second post and be located water injection hole department.
By adopting the technical scheme, as the second cylinder moves downwards in the evaporation tube, the pressure born by the second cylinder is continuously increased, when the second cylinder moves to the bottom of the evaporation tube, the first one-way pressure release valve is opened under the action of pressure, water in the evaporation tube enters the first cavity and reacts with sodium percarbonate to release oxygen, the continuously released oxygen increases the pressure in the first cavity until the second one-way pressure release valve is opened, the oxygen enters the second cavity and then discharges the water in the second cavity through the one-way valve, the oxygen in the second cavity is continuously increased, and the buoyancy born by the second cylinder is continuously increased until the lifting assembly and the cleaning assembly can be driven to float upwards; the effect that the drive clearance subassembly of being convenient for upwards removes along the evaporating pipe is reached.
Optionally, the drain hole has been seted up to the bottom of second post, the drain hole is linked together first cavity and external environment, just be located drain hole department on the second post and can dismantle and be provided with the fender lid.
By adopting the technical scheme, the blocking cover is opened, sodium percarbonate solids are placed in the second cavity, and then the blocking cover is closed, so that the effect of placing sodium percarbonate in the second cavity is achieved.
Optionally, still be provided with the scrubbing subassembly in the evaporating pipe, the scrubbing subassembly is connected and is set up in the top of clearance subassembly, the scrubbing subassembly is used for brushing evaporating pipe inner wall.
Through adopting above-mentioned technical scheme, being provided with between lifting unit and the clearance subassembly and scrubbing the subassembly, scrubbing the subassembly and scrubbing the inner wall of evaporating pipe, further promoted the clearance effect of evaporating pipe inner wall.
Optionally, brushing the subassembly and including the third cylinder, brush a section of thick bamboo and rotating the piece, the ring channel has been seted up at the third cylinder middle part, brush a section of thick bamboo cover is established on the third cylinder and is located the ring channel, the rotating the subassembly setting is in a brush section of thick bamboo, the rotating the piece and be used for driving a brush section of thick bamboo rotation, be provided with the brush hair on the brush section of thick bamboo outer wall, the brush hair is inconsistent with the inner wall of evaporating pipe.
Through adopting above-mentioned technical scheme, the brush section of thick bamboo is rotated on the third cylinder to the piece drive brush, and when the brush section of thick bamboo rotated, the brush hair outside the brush section of thick bamboo was scrubbed the inner wall of evaporating pipe, reached the effect of being convenient for scrub the evaporating pipe inner wall.
Optionally, the rotating member includes second driving motor, third gear and fourth gear, second driving motor sets up inside the brush section of thick bamboo, the coaxial setting of third gear is on the third cylinder, fourth gear coaxial line sets up on the output shaft of second driving motor, be provided with the second holding tank that is used for holding third gear and fourth gear in the brush section of thick bamboo, third gear meshes with fourth gear.
Through adopting above-mentioned technical scheme, second driving motor drive third gear rotates, because the fourth gear sets up on the third cylinder, and third gear and fourth gear mesh mutually, drive the brush section of thick bamboo and rotate around the third cylinder when consequently third gear rotates to reach the effect that is convenient for drive brush section of thick bamboo and carry out pivoted.
Optionally, still be provided with vibrating subassembly in the evaporating pipe, vibrating subassembly connects the setting in clearance subassembly top, vibrating subassembly includes fourth cylinder, third driving motor and cam, the inside third holding tank that has seted up of fourth cylinder, third driving motor is located the third holding tank, the cam eccentric setting is on third driving motor's output shaft.
Through adopting above-mentioned technical scheme, third driving motor drives the cam and rotates, and the cam eccentric setting is on third driving motor's output shaft, drives the fourth cylinder and vibrate in radial when the cam rotates, strikes the inner wall of evaporating pipe when the vibration of fourth cylinder, and the drive evaporating pipe vibrates, makes the scale deposit vibration on the evaporating pipe inner wall drop, further promotes the clearance effect.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the evaporation tube is cleaned, clear water is injected into the evaporation tube, the cleaning assembly and the lifting assembly are placed in the evaporation tube, the cleaning assembly and the lifting assembly move downwards along the length direction of the evaporation tube under the action of gravity, after moving to the bottom of the evaporation tube, the lifting assembly drives the cleaning assembly to move upwards along the length direction of the evaporation tube, and the cleaning assembly cleans the inner wall of the evaporation tube in the moving process, so that the inner wall of the evaporation tube is cleaned without detaching the evaporation tube, and the effect of cleaning the scale on the inner wall of the evaporation tube is achieved conveniently;
2. as the second cylinder moves downwards in the evaporation tube, the pressure born by the second cylinder is continuously increased, when the second cylinder moves to the bottom of the evaporation tube, the first one-way pressure release valve is opened under the action of pressure, water in the evaporation tube enters the first cavity and reacts with sodium percarbonate to release oxygen, the pressure in the first cavity is increased by the continuously released oxygen until the second one-way pressure release valve is opened, the oxygen enters the second cavity, the water in the second cavity is discharged through the one-way valve after the oxygen enters the second cavity, the oxygen in the second cavity is continuously increased, and the buoyancy born by the second cylinder is continuously increased until the lifting component and the cleaning component can be driven to float upwards; the effect of conveniently driving the cleaning assembly to move upwards along the evaporating pipe is achieved;
3. the rotating piece drives the brush cylinder to rotate on the third cylinder, and when the brush cylinder rotates, bristles outside the brush cylinder brush the inner wall of the evaporation tube, so that the effect of brushing the inner wall of the evaporation tube is achieved, and the cleaning effect of the inner wall of the evaporation tube is further improved;
4. the third driving motor drives the cam to rotate, the cam is eccentrically arranged on an output shaft of the third driving motor, the cam drives the fourth cylinder to vibrate in the radial direction during rotation of the cam, the inner wall of the evaporating tube is impacted during vibration of the fourth cylinder, the evaporating tube is driven to vibrate, scaling vibration on the inner wall of the evaporating tube is caused to fall off, and the cleaning effect is further improved.
Drawings
Fig. 1 is a schematic diagram of an MVR evaporation concentration system in this embodiment.
Fig. 2 is a partial sectional view for showing the internal structure of the falling film evaporation apparatus in the embodiment of the present application.
Fig. 3 is a sectional view for showing the internal structure of the evaporating pipe in the embodiment of the present application.
Fig. 4 is a cross-sectional view for illustrating the structure of a cleaning assembly in accordance with an embodiment of the present application.
Fig. 5 is a cross-sectional view for illustrating the structure of a lifting assembly in an embodiment of the application.
Fig. 6 is a cross-sectional view for illustrating the structure of a brushing assembly in an embodiment of the application.
Fig. 7 is a sectional view for showing the structure of a vibration assembly in an embodiment of the present application.
Reference numerals illustrate:
1. a gas pipe; 2. a falling film evaporation device; 21. an evaporation tube; 3. a separator; 4. a compression fan; 5. cleaning the assembly; 51. a first column; 511. a first accommodation groove; 52. a cutter head; 53. a first driving motor; 54. a rotating shaft; 55. a first gear; 56. a second gear; 6. a lifting assembly; 61. a second column; 62. a partition plate; 63. a first chamber; 64. a second chamber; 65. a first one-way pressure relief valve; 66. the second one-way pressure release valve; 67. a one-way valve; 68. a water injection hole; 681. a water stop plug; 69. a discharge port; 691. a blocking cover; 7. a brushing assembly; 71. a third column; 711. an annular groove; 712. a second accommodation groove; 72. a brush cylinder; 73. a second driving motor; 74. a third gear; 75. a fourth gear; 8. a vibration assembly; 81. a fourth column; 811. a third accommodation groove; 82. a third driving motor; 83. a cam.
Detailed Description
The application is described in further detail below with reference to fig. 1-7.
The embodiment of the application discloses an MVR evaporation concentration system, which comprises a falling film evaporation device 2, a separator 3 and a compression fan 4, wherein the falling film evaporation device 2, the separator 3 and the compression fan 4 are sequentially communicated end to end through a gas pipe 1, a plurality of evaporation pipes 21 are vertically arranged in the falling film evaporation device 2, liquid materials flow down in a uniform film shape along the inner wall of the evaporation pipe 21 from the top of the evaporation pipe 21, steam in the falling film evaporation device 2 exchanges heat with materials in the evaporation pipe 21, so that the liquid materials in the evaporation pipe 21 are heated, the materials are subjected to vapor-liquid separation, the separator 3 is used for separating liquid in secondary steam after the materials are concentrated, the secondary steam is compressed in the compression fan 4, and the secondary steam with increased pressure and temperature is conveyed into the falling film evaporation device 2 again for use.
Referring to fig. 3, a cleaning assembly 5, a brushing assembly 7, a vibrating assembly 8 and a lifting assembly 6 are installed in an evaporation tube 21 from bottom to top, the cleaning assembly 5 cleans the inner wall of the evaporation tube 21, the brushing assembly 7 brushes the inner wall of the evaporation tube 21, the vibrating assembly 8 drives the evaporation tube 21 to vibrate, scaling on the inner wall of the evaporation tube 21 is vibrated to fall off, cleaning effect is improved, after the cleaning assembly 5, the brushing assembly 7, the vibrating assembly 8 and the lifting assembly 6 are moved to the bottom close to the evaporation tube 21, the lifting assembly 6 drives the cleaning assembly 5, the brushing assembly 7 and the vibrating assembly 8 to move upwards to the pipe orifice of the evaporation tube 21 along the evaporation tube 21, and then an operator takes out the cleaning assembly 5, the brushing assembly 7, the vibrating assembly 8 and the lifting assembly 6 which are connected into a whole from the evaporation tube 21 to finish cleaning the inner wall of the evaporation tube 21.
Referring to fig. 4, the cleaning assembly 5 includes a first cylinder 51 having an outer diameter smaller than an inner diameter of the evaporation tube 21, a cutter head 52 mounted inside the first cylinder 51, and a driving member having a cutter head 52 mounted at a lower end of the first cylinder 51, the cutter head 52 being driven to rotate by the driving member, the cutter head 52 having a diameter identical to the inner diameter of the evaporation tube 21. The driving piece comprises a first driving motor 53, a rotating shaft 54, a first gear 55 and a second gear 56, wherein the first driving motor 53 is arranged in the first cylinder 51, a boss is machined at the top of the rotating shaft 54, the rotating shaft 54 is coaxially and rotatably arranged in the first cylinder 51, the boss prevents the rotating shaft 54 from downwards moving to be separated from the first cylinder 51 to a certain extent under the action of gravity, the lower end of the rotating shaft 54 extends out of the first cylinder 51, and the tool bit 52 is coaxially and spirally connected to the tail end of the rotating shaft 54. The first gear 55 is coaxially and fixedly installed on the output shaft of the first driving motor 53, the second gear 56 is coaxially and fixedly installed on the rotating shaft 54, the first gear 55 and the second gear 56 are positioned on the same horizontal plane, the first gear 55 is meshed with the second gear 56, and a first accommodating groove 511 for accommodating the first gear 55 and the second gear 56 is formed in the first column body 51.
The first driving motor 53 is started, the output shaft of the first driving motor 53 drives the first gear 55 to rotate, the second gear 56 meshed with the first gear 55 is rotated by the rotation of the first gear 55, so that the rotating shaft 54 is driven to rotate, the cutter head 52 is driven to rotate, and the cutter head 52 scrapes scale on the inner wall of the evaporating tube 21.
Referring to fig. 5, the lifting assembly 6 includes a second column 61, the second column 61 being hollow, the second column 61 having an outer diameter identical to that of the first column 51, a partition plate 62 being fixedly installed horizontally inside the second column 61 and near a bottom of the second column 61, the partition plate 62 dividing an inner space of the second column 61 into a lower first chamber 63 and an upper second chamber 64; a first one-way pressure release valve 65 is arranged on the second column 61, the input end of the first one-way pressure release valve 65 is communicated with the external environment of the second column 61, and the output end of the first one-way pressure release valve 65 is communicated with the first chamber 63; a second one-way pressure release valve 66 is arranged on the partition plate 62, the input end of the second one-way pressure release valve 66 is communicated with the first chamber 63, and the output end of the second one-way pressure release valve 66 is communicated with the second chamber 64; a one-way valve 67 is also arranged on the second cylinder 61 and positioned at the bottom end of the second chamber 64, the input end of the one-way valve 67 is communicated with the second chamber 64, and the output end of the one-way valve 67 is communicated with the external environment of the second cylinder 61; a water injection hole 68 is formed in the second column 61 and positioned at the upper part of the second chamber 64, a water stop 681 is arranged at the water injection hole 68, and the water stop 681 is in threaded connection with the second column 61; a discharge hole 69 is formed in the bottom of the second column 61, and a blocking cover 691 is detachably arranged on the second column 61 and positioned at the discharge hole 69 through threads; within the second chamber 64 is placed sodium percarbonate solids.
When cleaning the inner wall of the evaporation tube 21, the evaporation tube 21 is filled with water, the blocking cover 691 is removed, sodium percarbonate solid is put into the second chamber 64, the upper blocking cover 691 is connected and fixed, the water blocking plug 681 is opened, and the upper water blocking plug 681 is connected and fixed after the first chamber 63 is filled with water. After the second cylinder 61 is placed in the evaporation tube 21, the water in the first chamber 63 does not flow into the evaporation tube 21 through the check valve 67 due to the water in the evaporation tube 21. The second column 61 moves downwards along the evaporating pipe 21 under the action of gravity, and in the moving process, the cleaning assembly 5, the brushing assembly 7 and the vibration assembly 8 clean the inner wall of the evaporating pipe 21, and as the second column 61 continuously sinks in the evaporating pipe 21, the pressure born by the second column 61 continuously increases, and the pressure born by the first one-way pressure release valve 65 increases. The specification of the first one-way pressure release valve 65 is selected according to the length of the evaporating pipe 21, so that when the second cylinder 61 is close to the bottom of the evaporating pipe 21, the rated working pressure of the first one-way pressure release valve 65 is reached, at this time, the first one-way pressure release valve 65 is opened, water in the evaporating pipe 21 flows into the first chamber 63 through the first one-way pressure release valve 65, and sodium percarbonate in the first chamber 63 reacts with the water to generate oxygen; the oxygen in the first chamber 63 increases, so that the pressure in the first chamber 63 increases, the pressure difference between the first chamber 63 and the outside of the second column 61 decreases, and the water in the evaporation tube 21 no longer flows into the first chamber 63 through the first one-way pressure release valve 65; meanwhile, after the pressure in the first chamber 63 is increased, the second one-way pressure release valve 66 is opened, oxygen in the first chamber 63 enters the second chamber 64 through the second one-way pressure release valve 66, oxygen in the second chamber 64 is collected at the top of the second chamber 64, and water in the second chamber 64 is discharged into the evaporation tube 21 through the one-way valve 67. The oxygen in the second chamber 64 is continuously increased, and the buoyancy force applied to the second column 61 is continuously increased until the cleaning assembly 5, the brushing assembly 7, the vibrating assembly 8 and the lifting assembly 6 can be driven to float.
Oxygen continues to be produced in the first chamber 63 until the sodium percarbonate or water in the first chamber 63 is completely consumed, oxygen continues to be fed into the second chamber 64, and excess oxygen in the second chamber 64 is discharged through the one-way valve 67.
In other embodiments, other solid compounds capable of reacting with water and generating non-toxic gases may be placed within the first chamber 63.
Referring to fig. 6, the brushing assembly 7 includes a third cylinder 71, a brush cylinder 72 and a rotating member, the outer diameter of the third cylinder 71 is the same as the outer diameter of the second cylinder 61, an annular groove 711 is formed in the middle of the third cylinder 71, the brush cylinder 72 is annular, the brush cylinder 72 is sleeved on the third cylinder 71 and is located at the annular groove 711, bristles are mounted on the outer wall of the brush cylinder 72, and the tail ends of the bristles are in contact with the inner wall of the evaporation tube 21. The rotating member drives the brush holder 72 to rotate about the third cylinder 71. The rotating member comprises a second driving motor 73, a third gear 74 and a fourth gear 75, the second driving motor 73 is arranged in the brush cylinder 72, the third gear 74 is coaxially arranged on the third cylinder 71, the third gear 74 is positioned in an annular groove 711, the fourth gear 75 is coaxially and fixedly arranged on an output shaft of the second driving motor 73, the third gear 74 and the fourth gear 75 are positioned on the same horizontal plane, a second accommodating groove 712 for accommodating the third gear 74 and the fourth gear 75 is formed in the inner wall of the brush cylinder 72 at the position opposite to the third gear 74, the second accommodating groove 712 is also an annular groove 711, and the third gear 74 and the fourth gear 75 are meshed in the second accommodating groove 712. The two rotating members are arranged in the brush cylinder 72, the two second driving motors 73 are opposite to each other in the brush cylinder 72, and the two second driving motors 73 drive the two fourth gears 75 to synchronously rotate.
The second driving motor 73 is started, the output shaft of the second driving motor 73 drives the fourth gear 75 to rotate, the fourth gear 75 is meshed with the third gear 74, and the fourth gear 75 is fixedly arranged on the third cylinder 71, so that the fourth gear 75 moves along the circumferential direction of the third gear 74 while rotating, and drives the brush cylinder 72 to rotate around the third cylinder 71, and the effect of driving the brush cylinder 72 to brush the inner wall of the evaporation tube 21 is achieved.
Referring to fig. 7, the vibration assembly 8 includes a fourth cylinder 81, a third driving motor 82, and a cam 83, the outer diameter of the fourth cylinder 81 is the same as the outer diameters of the first cylinder 51, the second cylinder 61, and the third cylinder 71, a third receiving groove 811 is formed in the fourth cylinder 81, the third driving motor 82 is mounted on the bottom wall of the third receiving groove 811, and the cam 83 is eccentrically mounted on the output shaft of the third driving motor 82.
The third driving motor 82 drives the cam 83 to rotate, the cam 83 is eccentrically arranged on the output shaft of the third driving motor 82, the cam 83 eccentrically rotates in the process of driving the fourth cylinder 81 to vibrate in the radial direction, the fourth cylinder 81 continuously impacts the inner wall of the evaporation tube 21 during vibration to drive the evaporation tube 21 to vibrate, scales on the inner wall of the evaporation tube 21 are impacted and vibrated to fall off, and the cleaning effect of the evaporation tube 21 is further improved.
In this embodiment, referring to fig. 4-7, the first cylinder 51, the second cylinder 61, the third cylinder 71 and the fourth cylinder 81 are connected by threads, an external thread is formed on the top of the first cylinder 51, an internal thread is formed on the bottom of the second cylinder 61, an external thread is formed on the top of the second cylinder 61, an internal thread is formed on the bottom of the third cylinder 71, an external thread is formed on the top of the third cylinder 71, an internal thread is also formed on the bottom of the fourth cylinder 81, an external thread is formed on the top of the fourth cylinder, and the internal thread is matched with the external thread. In other embodiments, the first post 51, the second post 61, the third post 71 and the fourth post 81 may be fastened by a buckle.
In the present embodiment, the first column 51, the third column 71, the fourth column 81, and the second column 61 are connected in order from bottom to top. In other embodiments, the up-down positions of the third column 71, the fourth column 81 and the second column 61 may be freely changed, as long as the convenience of the third column 71, the fourth column 81 and the second column 61 being located above the first column 51 is satisfied. Meanwhile, according to the actual scaling situation of the evaporating pipe 21, when scaling on the inner wall of the evaporating pipe 21 is less and scaling is easy to fall off, the brushing assembly 7 and the vibrating assembly 8 are selectively arranged above the cleaning assembly 5 according to the cleaning difficulty of scaling; when the inner wall of the evaporating pipe 21 is much scaled and the scaling body is firm, one or more brushing assemblies 7 and vibrating assemblies 8 can be arranged on the cleaning assembly 5 to enhance the cleaning effect, the lifting assemblies 6 are required to be additionally arranged at the moment, and the number of the lifting assemblies 6 is required to meet the requirement that the maximum buoyancy generated by the lifting assemblies 6 is greater than the gravity of the integral structure.
The implementation principle of the MVR evaporation concentration system provided by the embodiment of the application is as follows: the liquid material flows in a uniform film shape from top to bottom in the evaporation tube 21, the steam exchanges heat with the material in the evaporation tube 21 in the falling film evaporation device 2, the material is evaporated and concentrated, and the used secondary steam is conveyed to the compression fan 4 through the gas pipe 1 for pressurized heating and then conveyed back to the falling film evaporation device 2 for repeated use;
when the scale on the inner wall of the evaporation tube 21 is cleaned, the cutter head 52 on the first cylinder 51 rotates to scrape the scale on the inner wall of the evaporation tube 21; the brush cylinder 72 sleeved on the third cylinder 71 rotates, and bristles on the brush cylinder 72 brush the inner wall of the evaporation tube 21; the cam 83 in the fourth cylinder 81 eccentrically rotates to drive the fourth cylinder 81 to vibrate and strike the inner wall of the evaporation tube 21, so that scale on the inner wall of the evaporation tube 21 is vibrated and falls off; when the second column 61 moves to the position close to the bottom of the evaporation tube 21, the water in the evaporation tube 21 enters the first chamber 63, gas is generated in the first chamber 63 and stored in the second chamber 64, so that the buoyancy of the second column 61 is increased to drive the first column 51, the second column 61, the third column 71 and the fourth column 81 to float upwards, and the cleaning of the scale on the inner wall of the evaporation tube 21 is completed.
Finally, it should be noted that: in the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (7)
1. MVR evaporation concentration system includes falling film evaporation plant (2), separator (3) and compression fan (4) through gas-supply pipe (1) end-to-end intercommunication, it is provided with many evaporating pipes (21), its characterized in that to arrange in the evaporation plant: the evaporation tube (21) is internally provided with a cleaning component (5) and a lifting component (6), the lifting component (6) is connected above the cleaning component (5), the cleaning component (5) is used for cleaning the inner wall of the evaporation tube (21), the cleaning component (5) and the lifting component (6) move towards the bottom of the evaporation tube (21) under the action of gravity, and after moving to the bottom close to the evaporation tube (21), the lifting component (6) drives the cleaning component (5) to move upwards along the evaporation tube (21); the lifting assembly (6) comprises a second column body (61), the second column body (61) is arranged in a hollow mode, a partition plate (62) is horizontally arranged in the second column body (61), the partition plate (62) divides the interior of the second column body (61) into a first cavity (63) at the lower part and a second cavity (64) at the upper part, sodium percarbonate solids are placed in the first cavity (63), a first one-way pressure release valve (65) communicated with the first cavity (63) is arranged on the second column body (61), a second one-way pressure release valve (66) is arranged on the partition plate (62), a one-way valve (67) communicated with the second cavity (64) is arranged on the second column body (61) close to the partition plate (62), a water injection hole (68) communicated with the second chamber (64) is further formed in the second column (61), and a water blocking plug (681) is arranged on the second column (61) and positioned at the water injection hole (68); the bottom of second post (61) has seted up drain hole (69), drain hole (69) are linked together first cavity (63) and external environment, just be located drain hole (69) department on second post (61) and can dismantle and be provided with shield (691).
2. The MVR evaporation concentration system of claim 1, wherein: the cleaning assembly (5) comprises a first cylinder (51), a cutter head (52) and a driving piece, wherein the driving piece is arranged inside the first cylinder (51), the cutter head (52) is rotatably arranged at the lower end of the first cylinder (51), and the driving piece is connected with the cutter head (52) and is used for driving the cutter head (52) to rotate.
3. The MVR evaporation concentration system of claim 2, wherein: the driving piece comprises a first driving motor (53), a rotating shaft (54), a first gear (55) and a second gear (56), wherein the first driving motor (53) is arranged inside a first cylinder (51), the rotating shaft (54) is coaxially rotated and arranged inside the first cylinder (51), the first gear (55) is coaxially arranged on an output shaft of the first driving motor (53), the second gear (56) is coaxially arranged on the rotating shaft (54), a first accommodating groove (511) for accommodating the first gear (55) and the second gear (56) is formed in the first cylinder (51), the first gear (55) is meshed with the second gear (56), the rotating shaft (54) downwards extends out of the first cylinder (51), and the cutter head (52) is coaxially connected with the rotating shaft (54).
4. The MVR evaporation concentration system of claim 1, wherein: the novel cleaning device is characterized in that a brushing assembly (7) is further arranged in the evaporation tube (21), the brushing assembly (7) is connected and arranged above the cleaning assembly (5), and the brushing assembly (7) is used for brushing the inner wall of the evaporation tube (21).
5. The MVR evaporation concentration system of claim 4, wherein: the brushing assembly (7) comprises a third cylinder (71), a brush cylinder (72) and a rotating piece, wherein an annular groove (711) is formed in the middle of the third cylinder (71), the brush cylinder (72) is sleeved on the third cylinder (71) and is positioned in the annular groove (711), the rotating piece is arranged in the brush cylinder (72), the rotating piece is used for driving the brush cylinder (72) to rotate, bristles are arranged on the outer wall of the brush cylinder (72), and the bristles are in contact with the inner wall of the evaporating tube (21).
6. The MVR evaporation concentration system of claim 5, wherein: the rotating piece comprises a second driving motor (73), a third gear (74) and a fourth gear (75), wherein the second driving motor (73) is arranged inside the brush cylinder (72), the third gear (74) is coaxially arranged on the third cylinder (71), the fourth gear (75) is coaxially arranged on an output shaft of the second driving motor (73), a second accommodating groove (712) for accommodating the third gear (74) and the fourth gear (75) is formed in the brush cylinder (72), and the third gear (74) is meshed with the fourth gear (75).
7. The MVR evaporation concentration system of claim 1, wherein: still be provided with vibration subassembly (8) in evaporating pipe (21), vibration subassembly (8) connect and set up in clearance subassembly (5) top, vibration subassembly (8) are including fourth cylinder (81), third driving motor (82) and cam (83), third holding tank (811) have been seted up to fourth cylinder (81) inside, third driving motor (82) are located third holding tank (811), cam (83) eccentric setting is on the output shaft of third driving motor (82).
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| CN202210295624.5A CN114669066B (en) | 2022-03-24 | 2022-03-24 | MVR evaporation concentration system |
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| CN202210295624.5A CN114669066B (en) | 2022-03-24 | 2022-03-24 | MVR evaporation concentration system |
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