CN219540979U - Rice vibration winnowing screen and rice mill - Google Patents

Abstract

The utility model provides a rice vibration winnowing screen with a compact structure and convenient miniaturization of a rice mill and the rice mill, and relates to the technical field of rice processing. The utility model provides a corn vibration winnowing screen, includes the screen frame and sets up the vibrating screen case on the screen frame, be equipped with the big miscellaneous sieve that the slope set up in the screen case, be equipped with the discharge gate that is located big miscellaneous sieve below on the screen case, one side that the screen case set up big miscellaneous sieve Gao Gaoduan is equipped with and is located the suction opening of big miscellaneous sieve below, the place ahead of suction opening is equipped with the upper end and sets up the baffle of one side downward sloping of big miscellaneous sieve Gao Gaoduan from the screen case, be equipped with a plurality of apertures and be less than the through-hole in corn aperture on the baffle. The utility model can improve the product competitiveness of the rice mill.

Description

Rice vibration winnowing screen and rice mill

Technical Field

The utility model relates to the technical field of rice processing, in particular to a rice vibration winnowing screen and a rice mill.

Background

The rice mill is a device for processing rice into rice, the main user of the rice mill is a household user, the volume requirement on the rice mill is higher, and the rice mill is required to be as small and miniaturized as possible on the premise of meeting the yield requirement.

In order to screen impurities in rice during rice milling, rice mills are provided with rice winnowing machines and rice vibration winnowing screens. The corn vibration winnowing screen is arranged above the rice mill, and the corn winnowing machine is used for winnowing grains falling from a big impurity screen plate of the corn vibration winnowing screen so as to remove impurities such as blighted grains in the corn, and the existing corn vibration winnowing and the rice mill body are split and large in volume. In order to facilitate the impurity to be sent into the cyclone separator, the paddy vibration winnowing screen generally adopts an air draft mode to winnow paddy. In the suction type wind, the airflow flows into the suction opening, so that the flow speed of the airflow is higher when the airflow approaches the suction opening, and the rice is lighter and is easily sucked into the suction opening. Therefore, in order to avoid that the rice is sucked into the suction opening together with the foreign matters, the suction opening is generally provided at a position far from the large foreign matter sieve plate, which is disadvantageous for miniaturization of the rice mill.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a rice vibration winnowing screen and a rice mill, which have compact structures and are convenient for miniaturization of the rice mill.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a corn vibration winnowing screen, includes the screen frame and sets up the vibrating screen case on the screen frame, be equipped with the big miscellaneous sieve that the slope set up in the screen case, be equipped with the discharge gate that is located big miscellaneous sieve below on the screen case, one side that the screen case set up big miscellaneous sieve high-end is equipped with and is located the suction opening of big miscellaneous sieve below, the place ahead of suction opening is equipped with the upper end and sets up the baffle of one side downward sloping of big miscellaneous sieve high-end from the screen case, be equipped with a plurality of apertures and be less than the through-hole in corn aperture on the baffle.

Further, the direction of the discharge port is perpendicular to the direction of the exhaust port.

Further, the screen frame is closed box structure, the roof indent of screen frame sets up and is equipped with first blanking mouth in order to become first hopper, first blanking mouth with be equipped with the interval between the high end of big miscellaneous sieve board in order to form the air current inflow section, one side that the screen frame kept away from the exhaust port is equipped with the selection by winnowing air intake.

Further, the bottom plate of the screen frame is concave and provided with a second blanking port to form a second hopper.

The rice mill comprises a rice mill body, a fan and the rice vibration winnowing screen arranged above the rice mill body, wherein a driving motor of the rice mill body is connected with a screen box through a cam mechanism, and an air inlet of the fan is communicated with an exhaust opening.

Further, a rice outlet vibrating screen is arranged below the rice outlet of the rice mill body, a material guide pipe for guiding rice flowing out from the material outlet to the rice outlet vibrating screen is arranged on the rice mill body, and a material feeding switching mechanism capable of guiding rice into the material guide pipe or a material feeding hopper of the rice mill body is arranged at the material outlet.

The beneficial effects of the utility model are as follows: according to the rice vibration winnowing screen and the rice mill, the baffle plate with the upper end inclined downwards from one side of the screen box, on which the large impurity screen plate Gao Gaoduan is arranged, is arranged in front of the suction opening, a plurality of through holes with the aperture smaller than that of the rice are formed in the baffle plate, and the baffle plate can block the rice, especially the rice falling from the high end of the large impurity screen plate, from entering the suction opening, so that the suction opening can be arranged at a place closer to the large impurity screen plate, the rice vibration winnowing screen is more compact in structure and smaller in size, the rice mill is miniaturized, the smaller rice mill can be obtained, and the product competitiveness of the rice mill can be improved.

Drawings

FIG. 1 is a schematic view of a rice vibration winnowing screen of the present utility model;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a left side view of FIG. 1;

FIG. 4 is a perspective view of a screen box;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic structural view of the rice mill of the present utility model;

FIG. 7 is a right side view of FIG. 6;

FIG. 8 is a schematic view of the structure of the feed switching mechanism;

the figure shows: the rice vibration winnowing screen 1, the rice mill body 2, the fan 3, the screen frame 11, the screen box 12, the miscellaneous sieve 13, the baffle 14, the discharge gate 121, the exhaust port 122, the rotating plate 123, the airflow inflow section 131, the through hole 141, the winnowing air inlet 111, the first blanking port 112, the first hopper 113, the second blanking port 114, the second hopper 115, the driving motor 21, the rice discharge vibration screen 22, the material guide pipe 23 and the feeding hopper 24.

Detailed Description

The utility model will be further described with reference to the drawings and examples.

As shown in fig. 1 to 5, the rice vibration winnowing screen 1 of the utility model comprises a screen frame 11 and a vibratable screen box 12 arranged on the screen frame 11, wherein a large impurity screen plate 13 which is obliquely arranged is arranged in the screen box 12, and a discharge hole 121 positioned below the large impurity screen plate 13 is arranged on the screen box 12. The large impurity screen 13 is mainly used for screening out large impurities larger than the grain size of the rice, and it is understood that the screen holes should be larger than the width of the rice. One side of the screen box 12, which is provided with the high end of the large impurity screen plate 13, is provided with an exhaust opening 122 positioned below the large impurity screen plate 13, the front of the exhaust opening 122 is provided with a baffle 14, the upper end of which is inclined downwards from one side of the screen box 12, which is provided with the high end of the large impurity screen plate 13, the lower end of the baffle 14 generally extends to the discharge opening 121, and the baffle 14 is provided with a plurality of through holes 141 with apertures smaller than the width of rice.

Specifically, the screen box 12 may be made vibratable by being suspended from the screen frame 11 by a flexible belt, and of course, may be made vibratable by being spring-coupled to the screen frame 11.

When the paddy vibration winnowing screen is used, the vibration mechanism is connected with the screen box 12 to drive the screen box 12 to vibrate, and the air inlet of the fan is connected with the air suction opening 122 to suction air to the screen box 12. During screening of the rice, the rice falls on the large impurity screen plate 13, and the rice moves downwards along the large impurity screen plate 13 under the vibration action of the screen box 12 and gradually falls off from the large impurity screen plate 13. Because the fan convulsions, the air current can flow from the suction opening 122 after getting into the sieve case from the sieve mesh of big miscellaneous sieve 13 to can carry out the selection by winnowing to the cereal that drops on the big miscellaneous sieve 13 and on the big miscellaneous sieve 13. The winnowing grains flow out of the sieve box from the discharge hole 121, and the large impurities flow out of the sieve box from the lower end of the large impurity sieve plate 13. According to the utility model, the air suction opening 122 positioned below the large impurity sieve plate 13 is arranged on one side of the sieve box 12 where the high end of the large impurity sieve plate 13 is arranged, the baffle 14 with the upper end inclined downwards from one side of the sieve box 12 where the high end of the large impurity sieve plate 13 is arranged in front of the air suction opening 122, the baffle 14 is provided with a plurality of through holes 141 with the aperture smaller than that of rice, and the baffle 14 can prevent the rice, especially the rice falling from the high end of the large impurity sieve plate 13, from entering the air suction opening 122, so that the air suction opening 122 is arranged below one side of the sieve box 12 where the high end of the large impurity sieve plate 13 is arranged, and the air suction opening 122 is closer to the large impurity sieve plate, therefore, the structure of the rice vibration winnowing sieve is more compact, the size is smaller, and the rice mill is beneficial to miniaturization. In addition, the structure is also convenient for controlling the air quantity of the fan (the air quantity of the fan can be changed in a large range, and the air quantity of the fan does not need to be accurately controlled).

In order to allow more airflow to enter the screen box from the screen holes on the screen plate, the orientation of the discharge hole 121 is perpendicular to the orientation of the air suction hole 122. Thus, the resistance of the air flow entering the sieve box from the discharge hole 121 can be increased, more air flow can enter the sieve box from the sieve holes on the sieve plate, and the rice can be favorably winnowed.

The screen frame 11 may be of conventional frame construction. In the embodiment of the present utility model, as shown in fig. 1 to 3, the screen frame 11 has a closed box structure. The roof indent setting of screen frame 11 is equipped with first blanking mouth 112 in order to become first hopper 113, and first hopper 113 is used for holding the corn of waiting to screen, first blanking mouth 112 with be equipped with the interval between the high end of big miscellaneous sieve 13 in order to form air current inflow section 131, the one side that screen frame 11 kept away from exhaust opening 122 is equipped with selection by winnowing air intake 111. Since the large impurity screen 13 is during operation, a section from the lower position of the first blanking port 112 to the lower end of the large impurity screen 13 is paved with more rice or large impurities, and most of the screen holes of the section are blocked by the rice or large impurities, so that the air flow is difficult to pass through the screen holes of the section, and after the air flow inflow section 131 is formed by arranging a space between the first blanking port 112 and the upper end of the large impurity screen 13, because no air flow blocking object exists above the air flow inflow section 131, the air flow 4 or a larger part of the air flow 4 flows upwards along the large impurity screen 13 after entering the screen frame through the air inlet 111, and then enters the screen box downwards from the screen holes of the air flow inflow section 131. Thus, in response to vibration of the sieve box, the air flow 4 blows most of small impurities in grains on the large impurity sieve plate 13 to the air flow inflow section 131, and makes the small impurities enter the sieve box through the sieve holes of the section, and then enter the air suction opening through the through holes 141. The winnowing impurity removal process of the paddy with the structure is mainly finished above the large impurity sieve plate 13, namely, a mode of winnowing is not adopted in the process of mainly depending on the paddy to fall from the large impurity sieve plate 13, so that a longer paddy distance is not required to be arranged below the large impurity sieve plate 13, and the paddy falling from the large impurity sieve plate 13 can be fully winnowed. Therefore, the structure can reduce the depth of the screen box, can enable the structure of the paddy vibration winnowing screen to be more compact, has smaller volume and is beneficial to miniaturization of the rice mill.

When the orientation of discharge gate 121 with exhaust port 122 is towards perpendicular setting, cooperation above-mentioned structure can further improve the edulcoration effect to cereal on the big miscellaneous sieve 13.

In the embodiment of the present utility model, the bottom plate of the screen frame 11 is concave and provided with a second blanking port 114 to form a second hopper 113, and the second hopper 113 is mainly used as a feed hopper of a rice mill.

As shown in fig. 6, the present utility model further provides a rice mill, which comprises a rice mill body 2, a fan 3, and the above-mentioned rice vibration winnowing screen 1 installed above the rice mill body 2, wherein a driving motor 21 of the rice mill body 2 is connected with the screen box 12 through a cam mechanism, and an air inlet of the fan 3 is communicated with an air suction opening 122. After the rice mill provided by the utility model adopts the rice vibration winnowing screen 1, the rice vibration winnowing screen has a more compact structure and a smaller volume, and the rice mill can be miniaturized.

As shown in fig. 7, a rice outlet vibrating screen 22 is disposed below the rice outlet of the rice mill body 2, for screening fine chaff and broken rice in the rice flowing out from the rice outlet, a material guiding pipe 23 for guiding the rice flowing out from a material outlet 121 to the rice outlet vibrating screen 22 is disposed on the rice mill body 2, and a material feeding switching mechanism capable of guiding the rice into the material guiding pipe 23 or a material feeding hopper 24 of the rice mill body 2 is disposed at the material outlet 121. Thus, when the rice is not required to be milled, for example, the rice is used as the rice seed, the feeding switching mechanism can be switched to be connected with the material guiding pipe 23, so that the screened rice can flow into the rice discharging vibrating screen 22 through the material guiding pipe 23, and then the rice discharging vibrating screen 22 carries out secondary screening so as to remove heavy fine impurities in the rice.

Specifically, the feed switching mechanism may be a hose provided at the discharge port 121 or a rotating plate 123 (see fig. 8) hinged at the discharge port 121. Of course, other arrangements of the feed switching mechanism are possible.

Claims (6)

1. Corn vibration winnowing screen, but including screen frame (11) and setting up vibrating screen case (12) on screen frame (11), be equipped with big miscellaneous sieve (13) of slope setting in screen case (12), be equipped with on screen case (12) and be located discharge gate (121) of big miscellaneous sieve (13) below, its characterized in that: one side of screen box (12) setting up big miscellaneous sieve board (13) high-end is equipped with and is located air extraction opening (122) of big miscellaneous sieve board (13) below, the place ahead of air extraction opening (122) is equipped with upper end follow screen box (12) and set up baffle (14) of one side downward sloping of big miscellaneous sieve board (13) high-end, be equipped with a plurality of apertures on baffle (14) and be less than through-hole (141) of corn width.

2. A rice vibration winnowing screen as recited in claim 1 wherein: the direction of the discharge hole (121) is perpendicular to the direction of the air suction hole (122).

3. A rice vibration winnowing screen as claimed in claim 1 or claim 2 wherein: the sieve frame (11) is of a closed box structure, a top plate of the sieve frame (11) is concavely arranged and provided with a first blanking port (112) to form a first hopper (113), a space is arranged between the first blanking port (112) and the high end of the large impurity sieve plate (13) to form an airflow inflow section (131), and one side, far away from the exhaust port (122), of the sieve frame (11) is provided with a winnowing air inlet (111).

4. A rice vibration winnowing screen as recited in claim 3 wherein: the bottom plate of the screen frame (11) is concave and is provided with a second blanking port (114) to form a second hopper (115).

5. Rice mill, including rice mill body (2), fan (3) and install rice vibration winnowing screen (1) according to any one of claims 1 to 4 in rice mill body (2) top, driving motor (21) of rice mill body (2) are connected with sieve case (12) through cam mechanism, the air intake and the exhaust opening (122) intercommunication of fan (3).

6. The rice mill of claim 5, wherein: the rice mill comprises a rice mill body (2), wherein a rice outlet vibrating screen (22) is arranged below the rice outlet of the rice mill body (2), a material guide pipe (23) for guiding rice flowing out of a material outlet (121) to the rice outlet vibrating screen (22) is arranged on the rice mill body (2), and a material feeding switching mechanism capable of guiding the rice into the material guide pipe (23) or a material feeding hopper (24) of the rice mill body (2) is arranged at the material outlet (121).