Controllable rice grain pre-wetting device used before rice polishing
By designing a controllable rice grain prehumidifier, which combines spraying, sealing, and steam prehumidification mechanisms, the problems of poor adaptability and rice grain sticking in existing equipment have been solved, enabling flexible selection of multiple prehumidification methods and efficient humidification effects.
Patent Information
- Application Number
- CN202511113848.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-11
- Publication Date
- 2025-11-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing rice pre-wetting equipment before rice polishing cannot be switched to meet the needs of different rice varieties, resulting in poor adaptability and poor pre-wetting effect. Furthermore, it lacks agitation or scraping functions, which can easily cause rice grains to stick together, affecting the uniformity and efficiency of pre-wetting.
Design a controllable rice grain prehumidifier, which includes spraying, sealing and steam prehumidification mechanisms. It achieves three functions in one machine through water spraying from the nozzle, pipe cover control, stirring rack agitation and steam heating. It can select the prehumidification method according to the needs of different rice grains and prevent rice grains from sticking together.
It enables flexible pre-humidification according to the different needs of rice grains, improves the efficiency and effect of pre-humidification, prevents rice grains from sticking together, ensures uniform humidification, has strong adaptability, and does not require equipment replacement.
Smart Images
Figure CN120900742A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of rice processing, especially to a controllable rice pre-wetting device for rice polishing. BACKGROUND
[0002] Rice polishing is a process of surface treatment of brown rice, aiming to remove the bran and part of the outer layer of endosperm on the surface of brown rice, so as to make the surface of rice more smooth and white, and improve the appearance quality. The rice pre-wetting device is a device specially used for preliminary wetting treatment of rice during rice processing, and its main purpose is to improve the effect of subsequent processing steps by penetrating appropriate amount of water into the rice.
[0003] The existing rice pre-wetting before polishing usually pours the rice into the pre-wetting device, sprays water through the spray head in the pre-wetting device for pre-wetting or pours water into the pre-wetting device for soaking pre-wetting. However, most of the current pre-wetting devices use a single pre-wetting method for humidification, which cannot be switched according to the needs of different varieties of rice, has poor adaptability, is prone to poor pre-wetting effect, and does not have the functions of stirring or scraping, which is prone to cause the rice to stick, affect the uniformity and efficiency of pre-wetting, and is inconvenient to use.
[0004] Therefore, it is necessary to design a controllable rice pre-wetting device for rice polishing, which can use different pre-wetting methods for humidification according to the pre-wetting needs of different rice, can stir or scrape the rice at the same time, realize one machine with three functions, prevent the rice from sticking, improve the efficiency and effect of pre-wetting, and has strong adaptability. SUMMARY
[0005] In order to overcome the shortcomings that most of the current pre-wetting devices cannot be switched according to the needs of different varieties of rice, have poor adaptability, are prone to poor pre-wetting effect, do not have the functions of stirring or scraping, are prone to cause the rice to stick, affect the uniformity and efficiency of pre-wetting, and are inconvenient to use, the present application provides a controllable rice pre-wetting device for rice polishing, which can use different pre-wetting methods for humidification according to the pre-wetting needs of different rice, can stir or scrape the rice at the same time, realize one machine with three functions, prevent the rice from sticking, improve the efficiency and effect of pre-wetting, and has strong adaptability.
[0006] The technical scheme is as follows: a controllable rice pre-wetting device for rice polishing, characterized in that: it comprises a support frame and a mounting cylinder, the mounting cylinder is arranged on the support frame, and the lower part of the mounting cylinder is provided with a water inlet pipe; characterized in that: the upper part of the mounting cylinder is provided with a spraying mechanism for spraying pre-wetting of rice, the lower part of the mounting cylinder is provided with a plugging mechanism for soaking pre-wetting of rice, and the mounting cylinder is provided with a steam pre-wetting mechanism for steam pre-wetting of rice; wherein,
[0007] The spraying mechanism comprises a feeding pipe, a blocking plate, a shunt pipe and a spray head, the feeding pipe is arranged in the middle of the installation cylinder, a plurality of blocking plates are arranged on the upper part of the feeding pipe, the upper part of the installation cylinder is connected with the shunt pipe, the shunt pipe is connected with a plurality of spray heads in the middle, the spray heads all pass through the feeding pipe, and the shunt pipe is connected with a water source and a water pump outside;
[0008] The plugging mechanism comprises a pipe cover, and the opening and closing of the outlet channel of the feeding pipe is controlled through the opening state of the pipe cover.
[0009] The steam pre-wetting mechanism comprises a mounting frame, a mesh bag, a limiting piece and a heating pipe, the mounting frame is arranged on the upper part of the feeding pipe, the mesh bag is connected below the mounting frame, the limiting piece is connected to the upper side of the installation cylinder, the limiting piece is clamped with the mounting frame, and the heating pipe is connected to the inner side of the installation cylinder.
[0010] Preferably, the plugging mechanism further comprises a rotating piece, a threaded pipe, a stirring frame, a motor, a gear and a gear ring, the lower part of the installation cylinder is rotatably connected with the rotating piece, the rotating piece is connected with the threaded pipe, the lower part of the threaded pipe is connected with the pipe cover, the upper side of the rotating piece is connected with the stirring frame, the stirring frame is arranged in the feeding pipe, the installation cylinder is connected with the motor, the output shaft of the motor is connected with the gear, the outer side of the rotating piece is connected with the gear ring, and the gear is engaged with the gear ring. When rice is soaked and wetted by being immersed in water, the gear is driven to rotate by the motor, the gear and the gear ring are engaged with each other to move, the rotating piece is rotated, the threaded pipe is driven to rotate, the stirring frame is rotated, and the rice on the inner wall of the feeding pipe is scraped off or the soaked rice is stirred.
[0011] Preferably, the stirring frame comprises at least two skeletons, the skeletons are connected by outer scrapers between the edges of the skeletons, the outer scrapers are attached to the inner wall of the feeding pipe, and the skeletons are connected by stirring pieces inside the skeletons. The outer scrapers are used to scrape off the rice attached to the inner wall of the feeding pipe, and the stirring pieces are used to stir the immersed rice to quickly pre-wet the rice. The outer scrapers and the stirring pieces strengthen the strength of the stirring frame, and the jacking mechanism can stably and continuously vibrate the mesh bag in the steam pre-wetting mode.
[0012] Preferably, the jacking mechanism further comprises a jacking rod, a first columnar cam, a spring and a second columnar cam, the mesh bag is slidably connected with the jacking rod in the middle, the lower side of the jacking rod is connected with the first columnar cam, the spring is arranged between the jacking rod and the mesh bag, the upper part of the stirring frame is connected with the second columnar cam, and the second columnar cam is in contact with the first columnar cam. When the stirring frame rotates, the second columnar cam is driven to rotate, the second columnar cam is in contact with the first columnar cam, the first columnar cam is shorter than the second columnar cam, the jacking rod moves, the spring is compressed, the spring rebounds when the second columnar cam is separated from the first columnar cam, the jacking rod and the first columnar cam move reversely to reset, and the rice in the mesh bag is stirred.
[0013] The present application has the following advantages:
[0014] 1. The application can use different pre-wetting methods for humidification while stirring or scraping the rice according to the pre-wetting needs of different rice grains, realize one machine with three functions, do not need to replace equipment, prevent rice from sticking, improve the efficiency and effect of pre-wetting, and have strong adaptability.
[0015] 2. The application can spray water on the rice for humidification while scraping the rice on the inner wall through the rotation of the stirring frame, so that the rice can be sprayed and humidified while being scraped, the water amount can be controlled, excessive humidification is prevented, and the rice is prevented from sticking.
[0016] 3. The application can pre-wet the rice while stirring the rice through the rotation of the stirring frame, so that the rice is more evenly soaked, impurities and starch are removed, and the effect and efficiency of pre-wetting are improved.
[0017] 4. The application can pre-wet the rice through steam, which is convenient for quickly penetrating the surface of the rice, ensures the uniformity of humidification, and prevents the rice from absorbing too much water inside.
[0018] 5. The application can intermittently stir the rice in the net bag through the rotation of the second cylindrical cam, the contact between the second cylindrical cam and the first cylindrical cam, the movement of the knock rod, and the reverse movement of the knock rod and the first cylindrical cam, which improves the effect of steam penetration, prevents the rice from caking, and further improves the efficiency of pre-wetting. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a perspective structural schematic diagram of the application.
[0020] Figure 2 It is a partial perspective structural sectional view of the application.
[0021] Figure 3 It is a first perspective structural sectional view of the spraying mechanism of the application.
[0022] Figure 4 It is a perspective structural schematic diagram of the spraying mechanism of the application.
[0023] Figure 5 The second perspective structural section view of the spraying mechanism of the present application.
[0024] Figure 6 The perspective structural section view of the plugging mechanism of the present application.
[0025] Figure 7 The partial perspective structural section view of the plugging mechanism of the present application.
[0026] Figure 8 The perspective structural schematic view of the steam pre-wetting mechanism of the present application.
[0027] Figure 9 The perspective structural exploded view of the steam pre-wetting mechanism of the present application.
[0028] Figure 10 The partial perspective structural schematic view of the steam pre-wetting mechanism of the present application.
[0029] Figure 11 The perspective structural section view of the jacking mechanism of the present application.
[0030] Figure 12 The first partial perspective structural schematic view of the jacking mechanism of the present application.
[0031] Figure 13 The second partial perspective structural schematic view of the jacking mechanism of the present application.
[0032] Figure 14 The third partial perspective structural schematic view of the jacking mechanism of the present application.
[0033] Wherein: 1 - support frame, 2 - mounting cylinder, 3 - spraying mechanism, 30 - feeding pipe, 31 - blocking plate, 32 - shunt pipe, 33 - spray head, 4 - plugging mechanism, 40 - rotating member, 41 - threaded pipe, 42 - pipe cover, 43 - stirring frame, skeleton 431, outer scraper 432, stirring blade 433, 44 - motor, 45 - gear, 46 - gear ring, 5 - steam pre-wetting mechanism, 50 - mounting frame, 51 - mesh bag, 52 - limiting member, 53 - heating pipe, 6 - jacking mechanism, 60 - jacking rod, 61 - first columnar cam, 62 - spring, 63 - second columnar cam. DETAILED DESCRIPTION
[0034] The technical solutions are further described below in combination with specific embodiments. It should be noted that the words such as up, down, left, right, etc. in the text only refer to the positions of the shown structures in the corresponding drawings. The serial numbers of the components in the text, such as first, second, etc., are only used to distinguish the described objects and do not have any sequence or technical meaning. The connection and coupling mentioned in the present application include direct and indirect connection unless otherwise specified.
[0035] A controllable rice grain prehumidifier for use before rice polishing, such as Figures 1-10 As shown, it includes a support frame 1, an installation cylinder 2, a spraying mechanism 3, a sealing mechanism 4, and a steam prehumidification mechanism 5. The installation cylinder 2 is connected to the support frame 1. A water inlet pipe is provided at the lower right of the installation cylinder 2 to facilitate water entry. The upper part of the installation cylinder 2 is provided with a spraying mechanism 3 for spraying and prehumidifying rice. The lower part of the installation cylinder 2 is provided with a sealing mechanism 4 for soaking and prehumidifying rice. The installation cylinder 2 is provided with a steam prehumidification mechanism 5 for steam prehumidifying rice.
[0036] like Figures 1-5 As shown, the spraying mechanism 3 includes a feed pipe 30, baffle plates 31, a diversion pipe 32, and nozzles 33. The feed pipe 30 is connected to the middle of the mounting cylinder 2, and four baffle plates 31 are connected to the upper part of the feed pipe 30. The diversion pipe 32 is connected to the upper part of the mounting cylinder 2, and thirty-two nozzles 33 are connected to the middle of the diversion pipe 32. All nozzles 33 pass through the feed pipe 30.
[0037] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the sealing mechanism 4 includes a rotating component 40, a threaded pipe 41, a pipe cap 42, a stirring frame 43, a motor 44, a gear 45, and a gear ring 46. The rotating component 40 is rotatably connected to the lower part of the mounting cylinder 2. The threaded pipe 41 is connected to the rotating component 40. The pipe cap 42 is threadedly connected to the lower part of the threaded pipe 41. The outer side of the pipe cap 42 is provided with anti-slip texture to prevent slippage. The stirring frame 43 is connected to the upper side of the rotating component 40. The stirring frame 43 is in contact with the feed pipe 30. The motor 44 is connected to the lower right side of the mounting cylinder 2. The gear 45 is connected to the output shaft of the motor 44. The gear ring 46 is connected to the outer side of the rotating component 40. The gear 45 and the gear ring 46 mesh with each other.
[0038] like Figure 1 , Figure 8 , Figure 9 and Figure 10 As shown, the steam prehumidification mechanism 5 includes a mounting frame 50, a net bag 51, a limiting member 52, and a heating tube 53. The mounting frame 50 is placed on the upper part of the feed pipe 30. The mounting frame 50 has grip grooves on both the left and right sides to facilitate lifting the mounting frame 50 by hand. The net bag 51 is connected to the lower side of the mounting frame 50. The limiting member 52 is connected to the upper side of both the front and rear parts of the mounting cylinder 2. The limiting member 52 is engaged with the mounting frame 50. The heating tube 53 is connected to the inner side of both the front and rear parts of the mounting cylinder 2. The heating tube 53 is all grid-shaped.
[0039] When the rice needs to be pre-wetted before polishing, the device can be used to make the support frame 1 contact the ground, then place the collection frame or conveying belt under the installation cylinder 2, then remove the pipe cover 42 by rotating it, prevent slipping by the anti-slip pattern, then connect the water source and water pump to the shunt pipe 32, start the water pump, make the water source enter the shunt pipe 32, then sprayed from the upper nozzle 33, then pour the rice into the feed pipe 30, make the rice slide along the feed pipe 30, prevent the rice from falling out by the blocking plate 31, make the water sprayed from the upper nozzle 33 fall on the rice for humidification, make the humidified rice fall from the threaded pipe 41 onto the collection frame or conveying belt, thereby realizing spray humidification, at the same time, start the motor 44, drive the gear 45 to rotate by the motor 44, make the rotating part 40 rotate by the meshing movement of the gear 45 and the gear ring 46, thereby driving the threaded pipe 41 to rotate, make the stirring frame 43 rotate, thereby scraping the rice on the inner wall of the feed pipe 30, make the sticky rice fall from the threaded pipe 41, after humidification, turn off the water pump and the motor 44, thereby being able to spray water on the rice for humidification while scraping the rice on the inner wall, which is convenient for controlling the water amount, preventing excessive humidification, and preventing the rice from sticking.
[0040] When the rice needs to be pre-wetted before polishing, the device can be used to make the support frame 1 contact the ground, then place the collection frame or conveying belt under the installation cylinder 2, then remove the pipe cover 42 by rotating it, prevent slipping by the anti-slip pattern, then connect the water source and water pump to the shunt pipe 32, start the water pump, make the water source enter the shunt pipe 32, then sprayed from the upper nozzle 33, then pour the rice into the feed pipe 30, make the rice slide along the feed pipe 30, prevent the rice from falling out by the blocking plate 31, make the water sprayed from the upper nozzle 33 fall on the rice for humidification, make the humidified rice fall from the threaded pipe 41 onto the collection frame or conveying belt, thereby realizing spray humidification, at the same time, start the motor 44, drive the gear 45 to rotate by the motor 44, make the rotating part 40 rotate by the meshing movement of the gear 45 and the gear ring 46, thereby driving the threaded pipe 41 to rotate, make the stirring frame 43 rotate, thereby scraping the rice on the inner wall of the feed pipe 30, make the sticky rice fall from the threaded pipe 41, after humidification, turn off the water pump and the motor 44, thereby being able to spray water on the rice for humidification while scraping the rice on the inner wall, which is convenient for controlling the water amount, preventing excessive humidification, and preventing the rice from sticking.
[0041] When steam pre-wetting of the rice is needed, the pipe cover 42 is rotated for installation, then the mounting frame 50 is placed on the feeding pipe 30, so that the mounting frame 50 is clamped with the limiting piece 52, then the net bag 51 is installed, then the rice is poured into the net bag 51, then the water inlet pipe is connected with a water source, so that the water enters the installation cylinder 2 from the water inlet pipe, then the heating pipe 53 is started, the water in the installation cylinder 2 is heated by the heating pipe 53, the heating pipe 53 is a grid shape, so that the water forms water vapor, the water vapor enters the feeding pipe 30 from the gap between the blocking plate 31 and the feeding pipe 30, so that the water vapor contacts the rice in the net bag 51 for steam pre-wetting, after pre-wetting is completed, the heating pipe 53 is closed, the mounting frame 50 is lifted by the hand holding groove, so that the mounting frame 50 is separated from the limiting piece 52, so that the net bag 51 is moved and taken out, then the rice is taken out, then the installation cylinder 2 is taken off by rotating the pipe cover 42 with the hand, so that the water in the installation cylinder 2 is discharged, so that the rice can be pre-wetted by steam, which is convenient for rapid penetration to the surface of the rice, ensures the uniformity of the humidification, prevents the rice from absorbing too much water, so that different pre-wetting methods can be used according to the pre-wetting needs of different rice, the rice can be stirred or scraped at the same time of humidification, one machine has three functions, without the need of changing equipment, prevents the rice from sticking, improves the pre-wetting efficiency and effect, and has strong adaptability, after use is completed, the pre-wetted rice can be sent for subsequent processing.
[0042] It should be noted that the thirty-two spray heads 33 connected in the middle of the shunt pipe 32 are divided into two groups of different specifications according to different pre-wetting methods: when the spray humidification method is used, the water spray head group is opened; when the soaking pre-wetting method is used, the open type spray head group is opened.
[0043] In the embodiment, the space occupied by the soaking pre-wetting and the spray humidification in the installation cylinder 2 is close, so that no matter which form of pre-wetting method is used, sufficient processing efficiency can be ensured. At this time, the heating pipe 53 is built in the installation cylinder 2 and located at the lower position of the installation cylinder 2, which is used for: on the one hand, to avoid scalding and heat loss; on the other hand, the lower setting makes the heating pipe 53 completely immersed in the liquid water pre-set at the bottom of the installation cylinder 2 for heating to generate water vapor, so that the heating pipe 53 can complete the steam pre-wetting by heating a proper amount of liquid water, and the energy consumption is reduced.
[0044] Further, in the steam pre-wetting method, the rice accumulates in the net bag 51 and suspends above the installation cylinder 2, the water vapor generated below flows upward, the accumulated rice, especially the bonded rice, greatly reduces the air permeability, the pre-wetting efficiency is low, more dangerously, the air pressure of the installation cylinder 2 gradually increases, which has a safety hazard. Therefore, a mechanism that can enhance the air permeability of the rice in the net bag 51 in the steam pre-wetting method is needed.
[0045] As Figure 2 , Figure 11、 Figure 12 、 Figure 13 and Figure 14 The top-up mechanism 6 further comprises a top-up rod 60, a first cylindrical cam 61, a spring 62 and a second cylindrical cam 63, the top-up rod 60 is slidably connected to the middle of the net bag 51, the first cylindrical cam 61 is connected to the lower side of the top-up rod 60, the spring 62 is connected between the top-up rod 60 and the net bag 51, the second cylindrical cam 63 is connected to the upper part of the stirring frame 43, the second cylindrical cam 63 is in contact with the first cylindrical cam 61, and the first cylindrical cam 61 is shorter than the second cylindrical cam 63.
[0046] During the steam pre-wetting process, the motor 44 is started to drive the gear 45 to rotate, the gear 45 and the gear ring 46 are in meshing motion, the rotating part 40 is driven to rotate, the threaded tube 41 is driven to rotate, the stirring frame 43 is driven to rotate, the second cylindrical cam 63 is driven to rotate, the second cylindrical cam 63 is in contact with the first cylindrical cam 61, the first cylindrical cam 61 is shorter than the second cylindrical cam 63, the top-up rod 60 is moved, and the spring 62 is compressed, when the second cylindrical cam 63 is separated from the first cylindrical cam 61, the spring 62 is rebounded, the top-up rod 60 and the first cylindrical cam 61 are reversely moved to reset, and the rice in the net bag 51 is stirred, so that the rice in the net bag 51 can be intermittently stirred, the steam penetration effect is improved, the rice clumping is prevented, the pre-wetting efficiency is further improved, and after pre-wetting, the motor 44 can be turned off.
[0047] In the soaking pre-wetting mode, the rice is generally deposited at the bottom, and the pre-wetting effect is affected by the deposition, the stirring is performed by the blocking mechanism 4. Figure 14 The stirring frame 43 comprises at least two layers of frameworks 431, for example, the outer scraper 432 is connected between the edges of the frameworks 431, the outer scraper 432 is attached to the inner wall of the feeding pipe 3, and is used for scraping the rice attached to the inner wall of the feeding pipe 3; the stirring blades 433 are connected in the frameworks 431, and are used for stirring the submerged rice to rapidly pre-wet.
[0048] It can be seen that the stirring frame 43 comprises: in the soaking pre-wetting mode, the stirring blades 433 stir the deposited rice, the outer scraper 432 can scrape the rice attached to the inner wall of the feeding pipe 3, in the steam pre-wetting mode, the power generated by the motor 44 is transmitted to make the top-up mechanism 6 stably and continuously vibrate the net bag 51, the air permeability of the rice is enhanced, and the pre-wetting is accelerated. That is, the stirring frame 43 has multiple functions, and no matter whether it is the soaking pre-wetting mode or the steam pre-wetting mode, the stirring effect of the stirring blades 433 or the vibration of the net bag 51 only relies on the unique power source, that is, the motor 44.
[0049] The technical principles of the embodiments of the present application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present application, and cannot be explained as limiting the protection scope of the embodiments of the present application in any way. Based on the explanations herein, other specific implementation manners of the embodiments of the present application can be thought of by those skilled in the art without creative labor, and these manners will all fall within the protection scope of the embodiments of the present application.
Claims
1. A controllable rice grain prehumidifier for use before rice polishing, characterized in that: The utility model provides a rice prewetting device, including support frame (1), installation cylinder (2), installation cylinder (2) is arranged on support frame (1), and installation cylinder (2) lower part is equipped with water inlet pipe, its characterized in that: installation cylinder (2) upper part is equipped with the spray mechanism (3) for carrying out the spray prewetting of rice, installation cylinder (2) lower part is equipped with the blocking mechanism (4) for carrying out the soaking prewetting of rice, and installation cylinder (2) is equipped with the steam prewetting mechanism (5) for carrying out the steam prewetting of rice, The spray mechanism (3) includes a feed pipe (30), a blocking plate (31), a shunt pipe (32), and a spray head (33), the middle part of the installation cylinder (2) is provided with the feed pipe (30), the upper part of the feed pipe (30) is provided with a plurality of blocking plates (31), the upper part of the installation cylinder (2) is connected with the shunt pipe (32), the middle part of the shunt pipe (32) is connected with a plurality of spray heads (33), the spray heads (33) all pass through the feed pipe (30), and the shunt pipe (32) is connected with a water source and a water pump; The blocking mechanism (4) includes a pipe cover (42), and the opening and closing of the discharge channel of the feed pipe is controlled through the open state of the pipe cover (42); The steam prewetting mechanism (5) includes a mounting bracket (50), a net bag (51), a limiting piece (52), and a heating pipe (53), the upper part of the feed pipe (30) is placed with the mounting bracket (50), the mounting bracket (50) is connected with the net bag (51) below, the upper side of the installation cylinder (2) is connected with the limiting piece (52), the limiting piece (52) is all connected with the mounting bracket (50), and the inner side of the installation cylinder (2) is connected with the heating pipe (53).
2. The controllable rice grain pre-wetting device according to claim 1, wherein: The blocking mechanism (4) further includes a rotating piece (40), a threaded pipe (41), a stirring bracket (43), a motor (44), a gear (45), and a gear ring (46), the lower part of the installation cylinder (2) is rotatably connected with the rotating piece (40), the rotating piece (40) is connected with the threaded pipe (41), the lower part of the threaded pipe (41) is connected with the pipe cover (42), the upper side of the rotating piece (40) is connected with the stirring bracket (43), the stirring bracket (43) is built in the feed pipe (30), the installation cylinder (2) is connected with the motor (44), the output shaft of the motor (44) is connected with the gear (45), the outer side of the rotating piece (40) is connected with the gear ring (46), and the gear (45) and the gear ring (46) are meshed with each other.
3. The controllable rice pre-wetting device according to claim 2, wherein: The outer side of the pipe cover (42) is provided with anti-skid lines.
4. The controllable rice pre-wetting device according to claim 2, wherein: The left and right parts of the mounting bracket (50) are both provided with holding grooves.
5. The controllable rice pre-wetting device according to claim 2, wherein: The stirring bracket (43) includes at least two layers of skeletons (431), the edges of the skeletons (431) are connected through outer scraping pieces (432), the outer scraping pieces (432) are attached to the inner wall of the feed pipe (3), and the skeletons (431) are connected through stirring pieces (433) inside.
6. The controllable rice pre-wetting device according to claim 5, wherein: The top driving mechanism (6) comprises a top driving rod (60), a first cylindrical cam (61), a spring (62) and a second cylindrical cam (63), the middle of the net bag (51) is slidably connected with the top driving rod (60), the lower side of the top driving rod (60) is connected with the first cylindrical cam (61), the spring (62) is arranged between the top driving rod (60) and the net bag (51), the upper part of the stirring frame (43) is connected with the second cylindrical cam (63), and the second cylindrical cam (63) is in contact with the first cylindrical cam (61).
7. The controllable rice pre-wetting device according to claim 6, wherein: The first cylindrical cam (61) is shorter than the second cylindrical cam (63).