CN212759749U - Negative pressure air screen and screening machine - Google Patents
Negative pressure air screen and screening machine Download PDFInfo
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- CN212759749U CN212759749U CN201922121650.2U CN201922121650U CN212759749U CN 212759749 U CN212759749 U CN 212759749U CN 201922121650 U CN201922121650 U CN 201922121650U CN 212759749 U CN212759749 U CN 212759749U
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- negative pressure
- screen
- screen box
- pressure air
- sieve
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Abstract
The utility model relates to a negative pressure air screen and a screening machine, which comprises a screen box, an air suction cover which is arranged above the screen box and is communicated with the inside of the screen box, and a feed inlet and a discharge outlet which are respectively arranged at the left end and the right end of the screen box; the utility model discloses increased the negative pressure fan housing in the top of sieve case, flowed into sieve incasement back from the feed inlet when grain, when getting rid of big miscellaneous and little miscellaneous work on the sieve piece of sieve case, utilize the wind-force of negative pressure fan housing, discharge in the light miscellaneous follow negative pressure fan housing with doping in the grain for grain carries out the work of selection by winnowing when carrying out classified screening, has greatly simplified the structure of complete machine, reduction in production cost.
Description
Technical Field
The utility model relates to a grain screening installation field specifically is a negative pressure air screen and sieve separator.
Background
The grading sieve of the existing grain screening equipment is in a structure with a plurality of simple sieve sheets, and then is matched with a vertical or bedroom air sieve to carry out winnowing operation, so that the effect of removing impurities such as light impurities, large impurities and the like in grains is realized. Such equipment need possess classifying screen and pneumatic separation's structure simultaneously just can realize the function of removing the impurity, and structural comparatively complicated, and to some small output or to removing the not so high grain screening work of impurity precision, adopt the sieve separator of above-mentioned complex construction comparatively extravagant.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a have selection by winnowing and classified screening function's negative pressure air screen and sieve separator concurrently is provided.
The utility model adopts the technical proposal that: the utility model provides a negative pressure air screen, its includes the sieve case, set up above the sieve case and with the inside cover that induced drafts that is linked together of sieve incasement portion and set up feed inlet and discharge gate at both ends about the sieve case respectively.
Furthermore, an air inlet is formed at the feed inlet and/or the side wall of the screen box.
Furthermore, two layers of sieve sheets are arranged in the sieve box.
Furthermore, a large impurity outlet and a small impurity outlet are also arranged on the screen box.
A screening machine comprises a negative pressure air screen and a specific gravity table arranged below the negative pressure air screen.
Further, the specific gravity table is positioned below the discharge port and corresponds to the discharge port.
The utility model discloses an actively the effect does: the utility model discloses increased the negative pressure fan housing in the top of sieve case, flowed into sieve incasement back from the feed inlet when grain, when getting rid of big miscellaneous and little miscellaneous work on the sieve piece of sieve case, utilize the wind-force of negative pressure fan housing, discharge in the light miscellaneous follow negative pressure fan housing with doping in the grain for grain carries out the work of selection by winnowing when carrying out classified screening, has greatly simplified the structure of complete machine, reduction in production cost.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in the attached figure 1, the negative pressure air screen of the utility model comprises a screen box 3, an air suction cover 2, and a feed inlet 1 and a discharge outlet 6 which are respectively arranged at the left end and the right end of the screen box 3.
The screen box 3 comprises a side wall, a bottom wall, a large impurity outlet 7 and a small impurity outlet, a vibration motor 8 is installed on the outer side wall, the screen box adopts a design without a top wall, an air suction cover 2 is directly covered and buckled on the top opening of the screen box 3, a screen sheet is arranged in the screen box 3, and the air suction cover 2 is connected with a negative pressure air suction device (such as a spiral dust collector) to continuously generate negative pressure. In this embodiment, there are two layers of sieve pieces in sieve case 3, and upper sieve piece is used for getting rid of the big miscellaneous in the grain, and upper sieve piece and big miscellaneous export 7 intercommunication, lower sieve piece are used for getting rid of the little miscellaneous, and the little miscellaneous falls on the diapire and discharges through little miscellaneous export, gets rid of the material of big miscellaneous and little miscellaneous and stays on lower sieve piece, then discharges through discharge gate 6.
In the process of screening grains in the screen box, the grains bounce in the screen box under the action of the vibrating motor 8, and meanwhile, the air suction cover 2 sucks out light impurities doped in the grains through negative pressure, so that the winnowing work is completed while the materials are screened in the classifying screen, the screening efficiency is greatly improved, the structure of the whole machine is simplified, and the production cost of the whole machine is lower.
In order to generate negative pressure in the air suction hood 2 smoothly, an air inlet 4 is arranged at the feed inlet 1 and/or on the side wall of the screen box 3.
The utility model discloses still include a sieve separator, it includes negative pressure wind sieve and sets up the specific gravity platform 5 in negative pressure wind sieve below, specific gravity platform 5 is located the below of discharge gate 6 and rather than corresponding. The materials screened by the negative pressure air screen fall on the specific gravity table 5 for specific gravity separation work, and impurities such as mildewed grains and the like in the grains are removed.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (5)
1. A negative pressure air screen is characterized by comprising a screen box (3), an air suction cover (2) which is coated above the screen box (3) and communicated with the inside of the screen box (3), and a feeding hole (1) and a discharging hole (6) which are respectively arranged at the left end and the right end of the screen box (3);
sieve case (3) are including lateral wall, diapire, big miscellaneous export (7) and the export of little miscellaneous, and the cover that induced drafts (2) are detained on the open-top of sieve case (3) feed inlet (1) department and/or lateral wall of sieve case (3) are provided with air intake (4).
2. A negative pressure air screen according to claim 1, characterized in that two layers of screen pieces are arranged in the screen box (3).
3. The negative pressure air screen of claim 2, characterized in that the screen box (3) is further provided with a large impurity outlet (7) and a small impurity outlet.
4. A screening machine is characterized by comprising a negative pressure air screen and a specific gravity table (5) arranged below the negative pressure air screen.
5. A screening machine according to claim 4, characterized in that the weight table (5) is located below the outfeed opening (6) and corresponds thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121650.2U CN212759749U (en) | 2019-12-02 | 2019-12-02 | Negative pressure air screen and screening machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121650.2U CN212759749U (en) | 2019-12-02 | 2019-12-02 | Negative pressure air screen and screening machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212759749U true CN212759749U (en) | 2021-03-23 |
Family
ID=75024898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922121650.2U Active CN212759749U (en) | 2019-12-02 | 2019-12-02 | Negative pressure air screen and screening machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212759749U (en) |
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2019
- 2019-12-02 CN CN201922121650.2U patent/CN212759749U/en active Active
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