CN207913324U - A kind of dietary fiber immersion separator - Google Patents

A kind of dietary fiber immersion separator Download PDF

Info

Publication number
CN207913324U
CN207913324U CN201721891542.8U CN201721891542U CN207913324U CN 207913324 U CN207913324 U CN 207913324U CN 201721891542 U CN201721891542 U CN 201721891542U CN 207913324 U CN207913324 U CN 207913324U
Authority
CN
China
Prior art keywords
filter screen
autoclave body
working chamber
dietary fiber
bottom end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201721891542.8U
Other languages
Chinese (zh)
Inventor
董丹丹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Food Cube Biological Technology (shanghai) Co Ltd
Original Assignee
Food Cube Biological Technology (shanghai) Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Food Cube Biological Technology (shanghai) Co Ltd filed Critical Food Cube Biological Technology (shanghai) Co Ltd
Priority to CN201721891542.8U priority Critical patent/CN207913324U/en
Application granted granted Critical
Publication of CN207913324U publication Critical patent/CN207913324U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Sampling And Sample Adjustment (AREA)

Abstract

The utility model is related to the technical fields of food processing auxiliary equipment, impregnate separator more particularly to a kind of dietary fiber, can prevent material the case where filter screen top deposition causes filter screen to block, ensure the normal operation of equipment, improve use reliability;And the working efficiency of filtering is improved, use reliability is improved;The separation situation of material in working chamber can accurately be controlled simultaneously, improve the purity of dietary fiber, and energy saving, improve practicability;Including autoclave body, autoclave body is internally provided with working chamber, the top of autoclave body is provided with motor and speed reducer, the bottom output end of speed reducer is provided with transmission shaft, paddle is provided on transmission shaft, the top and bottom end of autoclave body are respectively arranged with feed pipe and drainpipe, and water discharging valve is provided at drainpipe, further include aerator, controller, annular aeration tube, tubular filter screen, fixed link, circular filter net and test sample device, diaphragm type aeration head is provided on the inside of annular aeration tube.

Description

A kind of dietary fiber immersion separator
Technical field
The utility model is related to the technical fields of food processing auxiliary equipment, impregnate and divide more particularly to a kind of dietary fiber From device.
Background technology
It is well known that it is a kind of soaking and washing for raw material in dietary fiber preparation process that dietary fiber, which impregnates separator, And after enzymolysis feed separation auxiliary device, be widely used in a variety of applications in fields in food processing, medicine production etc.;It is existing Dietary fiber impregnate separator include autoclave body, autoclave body is internally provided with working chamber, and filter screen is provided in working chamber, The top of autoclave body is provided with motor and speed reducer, and speed reducer is located at the bottom output end of motor, and is exported in the bottom of speed reducer End is provided with transmission shaft, and the bottom end of transmission shaft is stretched to from the top of autoclave body in working chamber, and stirring is provided on transmission shaft Leaf, paddle are located in working chamber, and the top and bottom end of autoclave body are respectively arranged with feed pipe and drainpipe, and are set at drainpipe It is equipped with water discharging valve, drainpipe is located at the lower section of filter screen;Existing dietary fiber impregnates separator in use, by a certain amount of Material and suitable water are directed into from feed pipe in working chamber, and paddle rotation is driven by motor, to material detach clear It washes, then opens water discharging valve, the washing lotion with starch and enzymolysis liquid is exported from drainpipe, dietary fiber, which is filtered, to be stayed in The top of strainer is finally reached the purpose of purification work intracavitary material;Existing dietary fiber impregnates to be found in separator use, Since proportion becomes larger material after absorbing water, it is easy to overstock on filter screen top, causes the blocking of filter screen, influence the normal of equipment Operating, causes use reliability relatively low;And the effective filtration area of its filter screen is smaller, causes filter efficiency relatively low;Simultaneously It can not accomplish to be precisely controlled to detaching situation in material, cause the hydrolysis such as starch and protein to be not thorough, influence dietary fiber Purity or starch and protein hydrolyzed that separation is completed and equipment is still operating, cause the waste of the energy, lead to practicality Property is relatively low.
Utility model content
It can prevent material from being caused in filter screen top deposition in order to solve the above technical problems, the utility model provides one kind The case where filter screen blocks ensures the normal operation of equipment, improves use reliability;And the working efficiency for improving filtering, carries High use reliability;The separation situation of material in working chamber can accurately be controlled simultaneously, improve the pure of dietary fiber Degree, and it is energy saving, the dietary fiber for improving practicability impregnates separator.
A kind of dietary fiber of the utility model impregnates separator, including autoclave body, autoclave body are internally provided with working chamber, kettle The top of body is provided with motor and speed reducer, and speed reducer is located at the bottom output end of motor, and in the bottom output end of speed reducer It is provided with transmission shaft, the bottom end of transmission shaft is stretched to from the top of autoclave body in working chamber, and paddle is provided on transmission shaft, Paddle is located in working chamber, and the top and bottom end of autoclave body are respectively arranged with feed pipe and drainpipe, and are arranged at drainpipe There is water discharging valve;Further include aerator and controller, annular aeration tube is provided in the working chamber, and in annular aeration tube Inside be provided with diaphragm type aeration head, the aerator is mounted on the bottom end of autoclave body, the top output port of aerator from The left end bottom of autoclave body stretches in working chamber and is connected to annular aeration tube, and the controller is mounted on the left end of autoclave body, institute Motor, speed reducer and aerator is stated to be electrically connected with the controller;Further include tubular filter screen and multigroup fixed link, it is described multigroup One end of fixed link be fixedly connected on the outside of transmission shaft, the madial wall of the other end of multigroup fixed link with tubular filter screen It is fixedly connected, the bottom end of the tubular filter screen is provided with circular filter net, and top and the tubular of the circular filter net filter The bottom end of net is detachably connected;Further include test sample device, the test sample device includes sampling box, experiment box, input pipe, efferent duct And capsule, one end of the sampling box are provided with opening and are connected to working chamber inside, the experiment box is mounted on sampling box The top of lower section, the input pipe is stretched to from the bottom end of sampling box inside sampling box, the bottom end of input pipe and the top of capsule Connection, the top of the efferent duct are connected to the bottom end of capsule, and the bottom end of efferent duct is located at the top of experiment box.
A kind of dietary fiber of the utility model impregnates separator, and the test sample device is at least arranged two groups.
A kind of dietary fiber of the utility model impregnates separator, left end and the tubular filter screen bottom of the circular filter net End is hinged, and the right end of circular filter net is detachably connected with the bottom end of tubular filter screen by clamping to buckle, the right end setting of autoclave body It picks and places mouth, and baffle and sealing ring is provided at picking and placeing mouthful, the sealing ring is fixedly mounted on the lateral wall of baffle, close The lateral wall of seal is adjacent to mouth is picked and placeed, and the right side wall of the baffle and autoclave body is connected through the hinge, described to pick and place mouth and work Chamber communicate and with circular filter net face.
A kind of dietary fiber of the utility model impregnates separator, further includes multigroup fixing device, the fixing device packet Tube body, spring, limiting plate, supporting rod and pulley that one end is provided with sealing are included, the open end of the tube body is fixedly mounted on cylinder On the lateral wall of shape filter screen, the spring and limiting plate are respectively positioned in tube body, and the both ends of spring are filtered with tubular respectively The side that the lateral wall of net closes on body open ends with limiting plate connects, and one end of the supporting rod is stretched into from the sealing end of tube body It is connect to tubular body and with side of the limiting plate far from body open ends, the other end of supporting rod is connect with pulley, the cunning The one end of wheel far from tube body is adjacent to work chamber inner sidewall.
A kind of dietary fiber of the utility model impregnates separator, and the bottom output end for further including the feed pipe is located at cylinder The top of shape filter screen.
The beneficial effects of the utility model are compared with prior art:By above-mentioned setting, will be compressed by aerator Gas is delivered to aeration tube and is sprayed by diaphragm type aeration head, and gas, which plays the material for being deposited on circular filter net top, to be blown It beats, the effect of rolling, accelerates reversal rate of the material in working chamber, material can be effectively prevent to be made in filter screen top deposition The case where being blocked at filter screen ensures the normal operation of equipment, improves use reliability;Pass through tubular filter screen and circular filter The cooperation of net increases effective filtration area, improves the working efficiency of filtering, and motor drives tubular filter screen to be rotated, passes through The effect of centrifugal force further increases the working efficiency of filtering, improves use reliability;By squeezing capsule, in sampling box Solution is sampled, and the scene in experiment box is added dropwise in sampling and carries out test sample experiment, measures Proteins In Aqueous Solutions and starch Content, it is easy to operate, the separation situation of material in working chamber can accurately be controlled, improve the purity of dietary fiber, It is energy saving, improve practicability.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the partial enlargement structural representation at the utility model A;
Fig. 3 is the partial enlargement structural representation at the utility model B;
Fig. 4 is the overlooking structure diagram of the utility model annular aeration tube;
It is marked in attached drawing:1, autoclave body;2, motor;3, speed reducer;4, transmission shaft;5, paddle;6, feed pipe;7, it drains Pipe;8, water discharging valve;9, aerator;10, controller;11, annular aeration tube;12, diaphragm type aeration head;13, tubular filters Net;14, fixed link;15, circular filter net;16, sampling box;17, box is tested;18, input pipe;19, efferent duct;20, capsule; 21, baffle;22, sealing ring;23, tube body;24, spring;25, limiting plate;26, supporting rod;27, pulley.
Specific implementation mode
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As shown in Figures 1 to 4, a kind of dietary fiber of the utility model impregnates separator, including autoclave body 1, autoclave body it is interior Portion is provided with working chamber, and the top of autoclave body is provided with motor 2 and speed reducer 3, and speed reducer is located at the bottom output end of motor, and The bottom output end of speed reducer is provided with transmission shaft 4, and the bottom end of transmission shaft is stretched to from the top of autoclave body in working chamber, and is being passed Paddle 5 is provided on moving axis, paddle is located in working chamber, and the top and bottom end of autoclave body are respectively arranged with feed pipe 6 and row Water pipe 7, and water discharging valve 8 is provided at drainpipe;Further include aerator 9 and controller 10, ring is provided in working chamber Shape aeration tube 11, and diaphragm type aeration head 12 is provided on the inside of annular aeration tube, aerator is mounted on the bottom end of autoclave body, The top output port of aerator is stretched in working chamber from the left end bottom of autoclave body and is connected to annular aeration tube, controller peace Mounted in the left end of autoclave body, motor, speed reducer and aerator are electrically connected with the controller;Further include tubular filter screen 13 and multigroup Fixed link 14, one end of multigroup fixed link be fixedly connected on the outside of transmission shaft, the other end of multigroup fixed link is and tubular The madial wall of filter screen is fixedly connected, and the bottom end of tubular filter screen is provided with circular filter net 15, the top of circular filter net with The bottom end of tubular filter screen is detachably connected;Further include test sample device, test sample device includes sampling box 16, experiment box 17, input One end of pipe 18, efferent duct 19 and capsule 20, sampling box is provided with opening and is connected to working chamber inside, and experiment box, which is mounted on, to be taken The top of the lower section of sample box, input pipe is stretched to from the bottom end of sampling box inside sampling box, the bottom end of input pipe and the top of capsule End connection, the top of efferent duct are connected to the bottom end of capsule, and the bottom end of efferent duct is located at the top of experiment box;It is set by above-mentioned It sets, compressed gas is delivered to by aeration tube by aerator and is sprayed by diaphragm type aeration head, gas is to being deposited on round mistake The material on strainer top plays the role of piping and druming, rolling, accelerates reversal rate of the material in working chamber, can effectively prevent object Material ensures the normal operation of equipment, improves use reliability the case where filter screen top deposition causes filter screen to block;Pass through The cooperation of tubular filter screen and circular filter net increases effective filtration area, improves the working efficiency of filtering, and motor drives cylinder Shape filter screen is rotated, and the working efficiency of filtering is further increased by the effect of centrifugal force, improves use reliability;Pass through Capsule is squeezed, the solution in sampling box is sampled, and the scene in experiment box is added dropwise in sampling and carries out test sample experiment, is measured The content of Proteins In Aqueous Solutions and starch, it is easy to operate, the separation situation of material in working chamber can accurately be controlled, The purity of dietary fiber is improved, it is energy saving, improve practicability.
A kind of dietary fiber of the utility model impregnates separator, and test sample device is at least arranged two groups;By above-mentioned setting, By at least two groups test sample device, can simultaneously in solution protein and starch be detected, improve use reliability.
A kind of dietary fiber of the utility model impregnates separator, and left end and the tubular filter screen bottom end of circular filter net are cut with scissors It connects, the right end of circular filter net is detachably connected with the bottom end of tubular filter screen by clamping to buckle, and the right end of autoclave body, which is provided with, to be taken It puts mouth, and baffle 21 and sealing ring 22 is provided at picking and placeing mouthful, sealing ring is fixedly mounted on the lateral wall of baffle, sealing ring Lateral wall be adjacent to mouth is picked and placeed, the right side wall of baffle and autoclave body is connected through the hinge, pick and place mouth communicated with working chamber and with Circular filter net face;By above-mentioned setting, after work, the washing lotion containing protein and starch is all discharged it Afterwards, the clamping between circular filter net and tubular filter screen can be buckled by picking and placeing mouth and is dismantled, by circular filter net top Dietary fiber exports.
A kind of dietary fiber of the utility model impregnates separator, further includes multigroup fixing device, and fixing device includes one End is provided with tube body 23, spring 24, limiting plate 25, supporting rod 26 and the pulley 27 of sealing, and the open end of tube body is fixedly mounted on On the lateral wall of tubular filter screen, spring and limiting plate are respectively positioned in tube body, and the both ends of spring respectively with tubular filter screen Lateral wall close on the sides of body open ends with limiting plate and connect, one end of supporting rod stretches to tube body from the sealing end of tube body Inside is simultaneously connect with side of the limiting plate far from body open ends, and the other end of supporting rod is connect with pulley, and pulley is far from tube body One end with work chamber inner sidewall be adjacent to;By above-mentioned setting, the process that can be rotated in tubular filter screen by fixing device In play effect that is firm and slowing down vibrations, reduce the abrasion to transmission shaft, improve practicability.
A kind of dietary fiber of the utility model impregnates separator, and the bottom output end for further including feed pipe is located at tubular mistake The top of strainer;By above-mentioned setting, the material imported from feed pipe is fallen between tubular filter screen, is stirred by paddle, Separation cleaning is carried out to material, dietary fiber is filtered by tubular filter screen, improves use reliability.
A kind of dietary fiber of the utility model impregnates separator, at work, before completing above-mentioned action, first It is moved into the position of user's needs, material is directed into from feed pipe in the tubular filter screen of working chamber, motor drive is stirred It mixes leaf rotation to be stirred material, compressed gas is delivered to by aeration tube by aerator and is sprayed by diaphragm type aeration head Go out, gas plays the role of piping and druming, rolling to the material for being deposited on circular filter net top, accelerates material turning in working chamber Rotary speed can effectively prevent material the case where filter screen top deposition causes filter screen to block, ensure the normal fortune of equipment Row, increases effective filtration area by the cooperation of tubular filter screen and circular filter net, improves the working efficiency of filtering, motor It drives tubular filter screen to be rotated, the working efficiency of filtering is further increased by the effect of centrifugal force, improve using reliable Property;By squeezing capsule, the solution in sampling box is sampled, and the scene in experiment box that is added dropwise will be sampled and carry out test sample reality It tests, measures the content of Proteins In Aqueous Solutions and starch, it is easy to operate, the separation situation of material in working chamber can be carried out accurate Control, improve the purity of dietary fiber, when the Protein and starch contents in solution are in desired value or less, egg will be contained White matter and the washing lotion of starch are exported from drainpipe, are buckled the clamping between circular filter net and tubular filter screen by picking and placeing mouth and are torn open It opens, then exports the dietary fiber on circular filter net top.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change The scope of protection of the utility model is also should be regarded as into modification.

Claims (5)

1. a kind of dietary fiber impregnates separator, including autoclave body (1), autoclave body (1) are internally provided with working chamber, autoclave body (1) Top is provided with motor (2) and speed reducer (3), and speed reducer (3) is located at the bottom output end of motor (2), and in speed reducer (3) Bottom output end is provided with transmission shaft (4), and the bottom end of transmission shaft (4) is stretched to from the top of autoclave body (1) in working chamber, and is being passed Paddle (5) is provided on moving axis (4), paddle (5) is located in working chamber, and the top and bottom end of autoclave body (1) are respectively arranged with Feed pipe (6) and drainpipe (7), and water discharging valve (8) is provided at drainpipe (7);It is characterized in that, further including aeration dress (9) and controller (10) are set, annular aeration tube (11) are provided in the working chamber, and set on the inside of annular aeration tube (11) It is equipped with diaphragm type aeration head (12), the aerator (9) is mounted on the bottom end of autoclave body (1), the top output of aerator (9) End stretches in working chamber from the left end bottom of autoclave body (1) and is connected to annular aeration tube (11), controller (10) installation Left end in autoclave body (1), the motor (2), speed reducer (3) and aerator (9) are electrically connected with controller (10);Further include One end of tubular filter screen (13) and multigroup fixed link (14), multigroup fixed link (14) is solid with the outside of transmission shaft (4) Fixed connection, the other end of multigroup fixed link (14) are fixedly connected with the madial wall of tubular filter screen (13), the tubular filtering The bottom end of net (13) is provided with circular filter net (15), the bottom on the top and tubular filter screen (13) of the circular filter net (15) End is detachably connected;Further include test sample device, the test sample device include sampling box (16), experiment box (17), input pipe (18), One end of efferent duct (19) and capsule (20), the sampling box (16) is provided with opening and is connected to working chamber inside, the reality The lower section that box (17) is mounted on sampling box (16) is tested, the top of the input pipe (18) is stretched to from the bottom end of sampling box (16) to be taken Sample box (16) is internal, and the bottom end of input pipe (18) is connected to the top of capsule (20), the top of the efferent duct (19) and capsule (20) bottom end connection, the bottom end of efferent duct (19) are located at the top of experiment box (17).
2. a kind of dietary fiber as described in claim 1 impregnates separator, which is characterized in that the test sample device is at least arranged Two groups.
3. a kind of dietary fiber as claimed in claim 2 impregnates separator, which is characterized in that the circular filter net (15) Left end and tubular filter screen (13) bottom end are hinged, and the right end of circular filter net (15) passes through card with the bottom end of tubular filter screen (13) Dress button is detachably connected, and the right end of autoclave body (1), which is provided with, picks and places mouth, and is provided with baffle (21) and sealing ring at picking and placeing mouthful (22), the sealing ring (22) is fixedly mounted on the lateral wall of baffle (21), and the lateral wall of sealing ring (22) is pasted with mouth is picked and placeed Tightly, the baffle (21) and the right side wall of autoclave body (1) are connected through the hinge, it is described pick and place mouth communicated with working chamber and with circle Filter screen (15) face.
4. a kind of dietary fiber as claimed in claim 3 impregnates separator, which is characterized in that further include multigroup fixing device, The fixing device includes tube body (23), spring (24), limiting plate (25), supporting rod (26) and the pulley that one end is provided with sealing (27), the open end of the tube body (23) is fixedly mounted on the lateral wall of tubular filter screen (13), the spring (24) and limit Position plate (25) is respectively positioned in tube body (23), and the both ends of spring (24) respectively with the lateral wall of tubular filter screen (13) and limit Plate (25) closes on the side connection of tube body (23) open end, and the sealing end of one end from the tube body (23) of the supporting rod (26) stretches into It is internal to tube body (23) and connect with side of the limiting plate (25) far from tube body (23) open end, the other end of supporting rod (26) and Pulley (27) connects, and the one end of the pulley (27) far from tube body (23) is adjacent to work chamber inner sidewall.
5. a kind of dietary fiber as claimed in claim 4 impregnates separator, which is characterized in that further include the feed pipe (6) Bottom output end be located at the top of tubular filter screen (13).
CN201721891542.8U 2017-12-28 2017-12-28 A kind of dietary fiber immersion separator Expired - Fee Related CN207913324U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721891542.8U CN207913324U (en) 2017-12-28 2017-12-28 A kind of dietary fiber immersion separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721891542.8U CN207913324U (en) 2017-12-28 2017-12-28 A kind of dietary fiber immersion separator

Publications (1)

Publication Number Publication Date
CN207913324U true CN207913324U (en) 2018-09-28

Family

ID=63616682

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721891542.8U Expired - Fee Related CN207913324U (en) 2017-12-28 2017-12-28 A kind of dietary fiber immersion separator

Country Status (1)

Country Link
CN (1) CN207913324U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109259038A (en) * 2018-10-21 2019-01-25 成都你好植物科技有限公司 A kind of honey heating sterilization stocking system
CN111398002A (en) * 2020-03-18 2020-07-10 郑二伟 River hydrology sediment content measuring device
CN112973381A (en) * 2021-02-07 2021-06-18 山东保蓝环保工程有限公司 Filter special for rotary wheel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109259038A (en) * 2018-10-21 2019-01-25 成都你好植物科技有限公司 A kind of honey heating sterilization stocking system
CN111398002A (en) * 2020-03-18 2020-07-10 郑二伟 River hydrology sediment content measuring device
CN111398002B (en) * 2020-03-18 2023-08-18 郑二伟 River hydrological sand content measuring device
CN112973381A (en) * 2021-02-07 2021-06-18 山东保蓝环保工程有限公司 Filter special for rotary wheel

Similar Documents

Publication Publication Date Title
CN207913324U (en) A kind of dietary fiber immersion separator
CN209575950U (en) A kind of production aurantiamarin filter device
CN105661384B (en) A kind of full-automatic preparation facilities of the flesh of fish and preparation method thereof
CN107955084B (en) Reaction tank deslagging and separating system special for extracting chlorella polysaccharide
CN208234663U (en) Quality purifying device for water
CN209436196U (en) Dehydration device is used in a kind of preparation of Swine plasma protein
CN208678572U (en) A kind of Novel sewage processing filter device
CN217745970U (en) Plant extract separating device
CN207056670U (en) A kind of efficient heavy pollutes rice cleaning product line
CN216092624U (en) Peptone purification device
CN210282768U (en) Concrete mixing plant owner building dust pelletizing system of two dust remover structures
CN108485911A (en) A kind of medicine bacterium multi-stage separation screening installation
CN209034200U (en) A kind of agitating device of dairy produce
CN107755345A (en) A kind of efficiently medicinal herbs cleaning equipment
CN208414083U (en) Filter device is used in a kind of detection of life water
CN101961569A (en) High-efficient metavanadate environment-friendly filtering method and metavanadate box type undercurrent washing press used by the same
CN208583722U (en) A kind of rice production cleaning device
CN207118570U (en) A kind of ginger extract production line
CN208366966U (en) A kind of fresh grain pesticide detection device of green
CN207324239U (en) Quickly press dry filter and its filtration system
CN220802180U (en) Waste water treatment ware is used in bulk drug production
CN108395028A (en) A kind of high-efficiency environment friendly sewage disposal system
CN210751788U (en) Cyanuric chloride trap device
CN204918547U (en) Pulp fruit vinegar fruit wine fermentation cylinder is removed in centrifugation
CN220110809U (en) Quick agitating unit is used in facial mask production

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180928