CN218014163U - Negative pressure screening system - Google Patents
Negative pressure screening system Download PDFInfo
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- CN218014163U CN218014163U CN202221662328.6U CN202221662328U CN218014163U CN 218014163 U CN218014163 U CN 218014163U CN 202221662328 U CN202221662328 U CN 202221662328U CN 218014163 U CN218014163 U CN 218014163U
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- compressed air
- classifying screen
- screen
- negative pressure
- blowing
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Abstract
The utility model relates to a negative pressure screening system, which comprises a grading screen mechanism, a compressed air mechanism, a powder receiving mechanism and a vacuumizing mechanism; the classifying screen mechanism is provided with a plurality of stages of screening components, the classifying screen mechanism is communicated with a feeding mechanism, the compressed air mechanism is connected with the classifying screen mechanism, and the air outlet end of the compressed air mechanism is positioned on the lower side of the lower screen of the classifying screen mechanism and used for upwards blowing powder on the lower screen of the classifying screen mechanism; the powder receiving mechanism is positioned on the lower side of the classifying screen mechanism and used for receiving the powder screened by the lower screen of the classifying screen mechanism, and the powder receiving mechanism is communicated with the vacuumizing mechanism. The utility model discloses can effectually prevent to appear stifled net among the screening process, improve screening efficiency, prolong the life of screen cloth.
Description
Technical Field
The utility model belongs to the technical field of the powder screening technique and specifically relates to a negative pressure screening system is related to.
Background
The vibration classification screen adopts a vibration screening principle, and classifies mixtures with different particles according to particle sizes through reasonable screen surface inclination angles and screen mesh apertures.
The product obtained by vinyl chloride bulk polymerization has lump materials, granular materials and powder materials which need to be screened, the existing classifying screen is a combined classifying screen, the screen mesh of the first layer is thick and is used for separating lump materials, the screen mesh is thick and is not easy to damage, the screen mesh of the second layer and the screen are used for separating granular materials, and the screen mesh is thin and is easy to damage. In order to prevent the net from being blocked, the screen mesh is divided into cells of about 1 square meter by using a support, and a plurality of rubber bouncing small balls are placed in each cell. Because the bounce bobble makes the screen cloth constantly produce alternate deformation and produce stress and with separate the support and produce the friction, lead to appearing the screen cloth in the current classifying screen use and break easily, the clear net effect of bounce bobble is relatively poor produces stifled net easily, reduces classification efficiency and produces the waste material.
Therefore, the technical personnel in the field are dedicated to develop a negative pressure screening system, which can prevent the screen from being blocked in the screening process, improve the screening efficiency and prolong the service life of the screen.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a negative pressure screening system is provided, prevent to appear stifled net among the screening process, improve screening efficiency, prolong the life of screen cloth.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a negative pressure screening system comprises a grading screen mechanism, a compressed air mechanism, a powder receiving mechanism and a vacuumizing mechanism;
the classifying screen mechanism is provided with a plurality of stages of screening components, the classifying screen mechanism is communicated with a feeding mechanism, the compressed air mechanism is connected with the classifying screen mechanism, and the air outlet end of the compressed air mechanism is positioned on the lower side of the lower screen of the classifying screen mechanism and used for upwards blowing powder on the lower screen of the classifying screen mechanism;
the powder receiving mechanism is positioned on the lower side of the classifying screen mechanism and used for receiving powder sieved by the lower screen of the classifying screen mechanism, and the powder receiving mechanism is communicated with the vacuumizing mechanism.
The utility model has the advantages that: the clear in-process of netting of classifying screen mechanism lower floor screen cloth, compressed air mechanism provides compressed air and blows to classifying screen mechanism lower floor screen cloth from the downside is used for wasing classifying screen mechanism lower floor screen cloth, evacuation mechanism suction vacuum simultaneously, the suction in-process makes its powder receiving mechanism and classifying screen mechanism lower floor screen cloth department have certain vacuum, the powder that will blow down and air together inhale to the further processing in the powder receiving mechanism, thereby prevent that classifying screen mechanism lower floor screen cloth from blocking up, improve screening efficiency, and avoid the raise dust, the life of extension screen cloth.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, feed mechanism includes the feed pipe way, the feed pipe way discharge end with hierarchical sieve mechanism UNICOM, install first solenoid valve on the feed pipe way.
The beneficial effect of adopting above-mentioned further scheme is that first solenoid valve control feeding makes its upstream product ration intermittent type nature enter into the classifying screen mechanism, improves the classification efficiency of classifying screen mechanism.
Further, the compressed air mechanism includes compressed air pipe, the last compressed air buffer tank of installing of compressed air pipe, compressed air pipe end connection has the subassembly of blowing.
The beneficial effect who adopts above-mentioned further scheme is that compressed air buffer tank is used for storing compressed air, and the pressure drop of net cleaning in-process reduction compressed air to guarantee that the pressure of blowing maintains in suitable interval.
Furthermore, the blowing assembly comprises a plurality of blowing pipes, the blowing pipes are communicated with the compressed air pipe, and the plurality of blowing pipes are uniformly arranged on the lower side of the lower screen of the grading screen mechanism.
Adopt above-mentioned further scheme's beneficial effect to be located classifying screen mechanism downside screen cloth downside for the jetting pipe, the compressed air of being convenient for is backward blown to classifying screen mechanism lower floor screen cloth.
Furthermore, a plurality of blowing holes which are uniformly distributed are formed in each blowing pipe, and a second electromagnetic valve is installed on each blowing pipe and close to the compressed air pipe.
Adopt above-mentioned further scheme's beneficial effect be that the second solenoid valve is used for controlling compressed air, and the hole that blows does benefit to the compressed air bottom of blowing to classifying screen mechanism lower floor screen cloth.
Further, the powder receiving mechanism comprises a powder receiving bin communicated with the vacuumizing mechanism.
The beneficial effect of adopting above-mentioned further scheme is that the feed bin is received to the powder and is used for collecting the powder that sieves and further handle.
Further, the vacuumizing mechanism comprises a vacuumizing fan, and the vacuumizing fan is communicated with the upper end part of the powder receiving bin through an exhaust pipe.
The beneficial effect who adopts above-mentioned further scheme is that the evacuation fan is connected with powder receiving bin upper end, reduces among the evacuation process and sucks the powder together.
Further, still install the dust removal storehouse on the exhaust tube, install the sack cleaner in the dust removal storehouse.
The beneficial effect of adopting above-mentioned further scheme is that the sack cleaner filters the powder that the suction vacuum was taken away together, avoids the powder to discharge from the evacuation mechanism.
Further, a vibrating motor is installed on the classifying screen mechanism.
The beneficial effect of adopting above-mentioned further scheme is that vibrating motor makes its classifying screen vibrate according to certain law, improves screening efficiency.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention;
fig. 2 is a schematic view of an arrangement structure of a blowing pipe according to an embodiment of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a classifying screen mechanism; 2. a compressed air mechanism; 3. a powder receiving mechanism; 4. a vacuum pumping mechanism; 5. a feeding mechanism; 6. a feed line; 7. a first solenoid valve; 8. a compressed air pipe; 9. a compressed air buffer tank; 10. a blowing pipe; 11. a blowing hole; 12. a second solenoid valve; 13. a powder receiving bin; 14. vacuumizing a fan; 15. an air exhaust pipe; 16. a dust removal bin; 17. a bag-type dust collector; 18. a vibration motor; 19. and a second layer of screen mesh.
Detailed Description
The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the system or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
As shown in fig. 1, fig. 2 and fig. 3, a negative pressure sieving system comprises a classifying sieve mechanism 1, a compressed air mechanism 2, a powder receiving mechanism 3 and a vacuum pumping mechanism 4; the classifying screen mechanism 1 is provided with a plurality of classifying components, the classifying screen mechanism 1 is communicated with a feeding mechanism 5, the compressed air mechanism 2 is connected with the classifying screen mechanism 1, and the air outlet end of the compressed air mechanism 2 is positioned at the lower side of the lower-layer screen of the classifying screen mechanism 1 and is used for blowing powder on the lower-layer screen of the classifying screen mechanism 1 upwards; the powder receiving mechanism 3 is positioned at the lower side of the classifying screen mechanism 1 and is used for receiving powder screened by the lower screen of the classifying screen mechanism 1, and the powder receiving mechanism 3 is communicated with a vacuumizing mechanism 4.
The utility model discloses in, the clear in-process of net of 1 lower floor's screen cloth of classifying screen mechanism, compressed air mechanism 2 provides compressed air and is used for wasing 1 lower floor's screen cloth bottom of classifying screen mechanism from downside reverse blow to 1 lower floor's screen cloth of classifying screen mechanism, evacuation mechanism 4 suction vacuum simultaneously, the suction in-process makes its powder receiving mechanism 3 and 1 lower floor's screen cloth department of classifying screen mechanism have certain vacuum, the powder that will blow down and air together inhale to further processing in the powder receiving mechanism 3, thereby prevent that 1 lower floor's screen cloth of classifying screen mechanism from blocking up, improve screening efficiency, and avoid the raise dust, the life of extension screen cloth.
As shown in fig. 1, a vibrating motor 18 is installed on a classifying screen mechanism 1, the classifying screen is driven by the vibrating motor 18 to vibrate periodically, the aperture of a first layer screen mesh in the classifying screen mechanism 1 is 8mm, screen residue is lump material and enters a crusher, a second layer screen mesh 19 in the classifying screen mechanism 1 (namely, a lower layer screen mesh of the classifying screen mechanism 1) is 30 meshes to 40 meshes, screen residue is granular material and enters a grinder, and powder passing through the second layer screen mesh 19 enters a powder receiving mechanism 3.
The feeding mechanism 5 comprises a feeding pipeline 6, the discharge end of the feeding pipeline 6 is communicated with the classifying screen mechanism 1, upstream products (containing lump materials, particle materials and powder materials) discharged from the grinding machine are conveyed to the classifying screen mechanism 1 through the feeding pipeline 6, and in order to control the feeding amount and the feeding speed of the upstream products, a first electromagnetic valve 7 is installed on the feeding pipeline 6.
As shown in fig. 1, 2 and 3, in some embodiments, the compressed air mechanism 2 includes a compressed air pipe 8, one end of the compressed air pipe 8 is connected with the air outlet end of the air compressor, a compressed air buffer tank 9 is installed on the compressed air pipe 8, and the compressed air buffer tank 9 is used for storing compressed air, so that the shortage of compressed air in the net blowing process is avoided. The end of the compressed air pipe 8 is connected with an air blowing assembly, specifically, the air blowing assembly comprises a plurality of blowing pipes 10, the blowing pipes 10 are arranged between the second layer screen mesh 19 and the screen mesh bracket at intervals and are generally provided with six groups to ten groups of blowing pipes 10, the diameter of each blowing pipe 10 is smaller than that of the corresponding compressed air pipe 8, the blowing pipes 10 are communicated with the corresponding compressed air pipes 8, and the plurality of blowing pipes 10 are uniformly arranged on the lower side of the lower layer screen mesh of the classifying screen mechanism 1 and are beneficial to reversely blowing the lower layer screen mesh of the classifying screen mechanism 1. Each blowing pipe 10 is provided with a plurality of uniformly distributed blowing holes 11, and the diameter of each blowing hole 11 is 4mm to 8mm. A second electromagnetic valve 12 is mounted on each blowing pipe 10 and close to the compressed air pipe 8, and the second electromagnetic valve 12 is used for controlling the compressed air.
In another embodiment, as shown in fig. 1 and 2, the powder receiving mechanism 3 comprises a powder receiving bin 13, a discharge valve is installed at the bottom of the powder receiving bin 13, and a viewing hole, an exhaust hole and the like are installed at the upper part of the powder receiving bin 13. The powder receiving bin 13 is communicated with a vacuumizing mechanism 4. Concretely, evacuation mechanism 4 includes evacuation fan 14, evacuation fan 14 can adopt centrifugal draught fan or roots's fan, evacuation fan 14 receives 13 upper end UNICOM of feed bin through exhaust tube 15 and powder, reduce evacuation in-process powder and inhale, still install dust removal storehouse 16 on the exhaust tube 15, install sack cleaner 17 in the dust removal storehouse 16, the sack cleaner 17 of installing in dust removal storehouse 16 will bleed the powder absorption of carrying in, avoid the powder to discharge to the atmosphere along with evacuation mechanism 4, and avoid the too much sack cleaner 17 that blocks up of powder that sack cleaner 17 gathered, still be provided with the blowback subassembly on the sack cleaner 17.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A negative pressure screening system characterized in that: comprises a grading sieve mechanism (1), a compressed air mechanism (2), a powder receiving mechanism (3) and a vacuumizing mechanism (4);
the classifying screen mechanism (1) is provided with a plurality of stages of screening components, the classifying screen mechanism (1) is communicated with a feeding mechanism (5), the compressed air mechanism (2) is connected with the classifying screen mechanism (1), and the air outlet end of the compressed air mechanism (2) is positioned on the lower side of the lower screen of the classifying screen mechanism (1) and is used for blowing powder on the lower screen of the classifying screen mechanism (1) upwards;
the powder receiving mechanism (3) is positioned on the lower side of the classifying screen mechanism (1) and used for receiving powder screened by the lower screen of the classifying screen mechanism (1), and the powder receiving mechanism (3) is communicated with the vacuumizing mechanism (4).
2. The negative pressure screening system of claim 1, wherein: the feeding mechanism (5) comprises a feeding pipeline (6), the discharging end of the feeding pipeline (6) is communicated with the classifying screen mechanism (1), and a first electromagnetic valve (7) is installed on the feeding pipeline (6).
3. The negative pressure screening system of claim 1, wherein: compressed air mechanism (2) include compressed air pipe (8), install compressed air buffer tank (9) on compressed air pipe (8), compressed air pipe (8) end connection has the subassembly of blowing.
4. The negative pressure screening system of claim 3, wherein: the blowing assembly comprises a plurality of blowing pipes (10), the blowing pipes (10) are communicated with the compressed air pipe (8), and the plurality of blowing pipes (10) are uniformly arranged on the lower side of the lower-layer screen of the classifying screen mechanism (1).
5. The negative pressure screening system of claim 4, wherein: a plurality of blowing holes (11) which are uniformly distributed are formed in each blowing pipe (10), and a second electromagnetic valve (12) is mounted on each blowing pipe (10) and close to the compressed air pipe (8).
6. The negative pressure screening system of claim 1, wherein: the powder receiving mechanism (3) comprises a powder receiving bin (13), and the powder receiving bin (13) is communicated with the vacuumizing mechanism (4).
7. The negative pressure screening system of claim 6, wherein: the vacuumizing mechanism (4) comprises a vacuumizing fan (14), and the vacuumizing fan (14) is communicated with the upper end part of the powder receiving bin (13) through an exhaust pipe (15).
8. The negative pressure screening system of claim 7, wherein: still install dust removal storehouse (16) on exhaust tube (15), install sack cleaner (17) in dust removal storehouse (16).
9. The negative pressure screening system of claim 1, wherein: and a vibrating motor (18) is arranged on the classifying screen mechanism (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662328.6U CN218014163U (en) | 2022-06-29 | 2022-06-29 | Negative pressure screening system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662328.6U CN218014163U (en) | 2022-06-29 | 2022-06-29 | Negative pressure screening system |
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| Publication Number | Publication Date |
|---|---|
| CN218014163U true CN218014163U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221662328.6U Active CN218014163U (en) | 2022-06-29 | 2022-06-29 | Negative pressure screening system |
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| Country | Link |
|---|---|
| CN (1) | CN218014163U (en) |
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- 2022-06-29 CN CN202221662328.6U patent/CN218014163U/en active Active
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