CN210497238U - Cement fineness negative pressure screen analysis instrument - Google Patents
Cement fineness negative pressure screen analysis instrument Download PDFInfo
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- CN210497238U CN210497238U CN201921102644.6U CN201921102644U CN210497238U CN 210497238 U CN210497238 U CN 210497238U CN 201921102644 U CN201921102644 U CN 201921102644U CN 210497238 U CN210497238 U CN 210497238U
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Abstract
The utility model discloses a cement fineness negative pressure screen analysis appearance, relate to the technical field that the cement fineness detected, thereby the screen cloth of having solved current cement fineness negative pressure screen analysis appearance is blockked up by large granule cement easily and is caused the problem that screening result precision is low, its technical scheme main points are including rotating the switch board that is used for on the screen cloth of connecting in the pivot of screen cover top intermediate position and fixed connection in pivot bottom one end both sides and stir, it stirs to the granule at screen cloth top to drive the switch board through the pivot, make the cement of large granule can't produce the mesh of screen cloth and block up, thereby make the tiny granule that is located the upper strata also can be abundant screen, the precision that the cement screened is improved.
Description
Technical Field
The utility model relates to a technical field that the cement fineness detected, more specifically the saying so, it relates to a cement fineness negative pressure screen analysis appearance.
Background
The negative pressure sieving analyzer for cement fineness is one equipment for sieving powder material with air pressure and includes box, screen, cyclone, dust collector and dust collecting bottle connected together; the cement fineness negative pressure screen analyzer utilizes air flow as a power medium for screening, when the cement fineness negative pressure screen analyzer works, the whole system keeps a negative pressure state, powder materials to be detected in the screen are in a flow state under the action of air flow sprayed by a rotary air nozzle and move along with the air flow, fine particles with particle diameters smaller than the aperture of the screen are driven by the air flow to be pumped away through the screen and enter a dust collecting bottle, and particles with larger particle diameters can be remained in the screen, so that the purpose of screening is achieved.
However, when screening is performed, fine particles close to the screen mesh pass through the screen mesh and are sucked away, cement with large particles can settle to the top of the screen mesh and block meshes on the screen mesh, so that fine particles on the upper layer cannot pass through screening completely, and the accuracy of a cement screening result is reduced.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a cement fineness negative pressure screen analysis appearance, it drives the switch plate through the pivot and stirs the granule at screen cloth top for cement of big granule can't produce the mesh of screen cloth and block up, thereby makes that the tiny granule that is located the upper strata also can be abundant screen, has improved the precision that the cement screened.
In order to achieve the above purpose, the utility model provides a following technical scheme: a negative pressure screen analyzer for cement fineness comprises a box body, a bowl-shaped screen seat fixedly connected to the top of the box body, a screen cylinder arranged at the top of the box body and positioned above the screen seat, a screen cloth fixedly connected to the bottom of the screen cylinder, a screen cover arranged at the top of the screen cylinder and used for covering an opening at the top of the screen cylinder, a vertical rod arranged at the bottom of the screen seat and used for introducing air into the screen seat, a connecting pipe fixedly connected to one side of the bottom of the screen seat, a cyclone cylinder fixedly connected to the inner wall of the box body, a dust collecting bottle detachably connected to the bottom of the cyclone cylinder, an exhaust pipe fixedly connected to the top of the cyclone cylinder, a suction fan fixedly connected to one end, away from the cyclone cylinder, of the exhaust pipe and a filter screen fixedly connected to the;
the top of the box body is provided with a yielding hole penetrating through the top of the box body, the periphery of the top of the sieve seat is fixedly connected to the top of the box body around the yielding hole, and the outer diameter of the sieve cylinder is larger than the diameter of the yielding hole;
the connecting pipe fixed connection is on the cyclone outer wall to the connecting pipe is close to cyclone one side and sets up along the tangential direction of cyclone periphery, still including rotating the switch board that is used for stirring the cement on the screen cloth of connecting the pivot and the fixed connection in pivot bottom one end both sides at the screen cover top intermediate position.
Through adopting above-mentioned technical scheme, when beginning to sieve, the staff rotates the pivot, and the pivot drives the switch plate in the middle of carrying out the pivoted process and stirs the cement on the screen cloth to make large granule cement can not lead to the fact the jam to the sieve mesh of screen cloth, thereby make the tiny granule that is located the upper strata also can be filtered by the screen cloth, thereby improved the screening precision of cement.
The utility model discloses further set up to: the bottom of the kick-out plate is fixedly connected with a plurality of brush hairs which are mutually contacted with the top surface of the screen.
Through adopting above-mentioned technical scheme, stir the cement at screen cloth top that can be more abundant through setting up the brush hair for macroaggregated cement is difficult to the mesh that blocks up the screen cloth more.
The utility model discloses further set up to: the both sides fixedly connected with of sieve seat two pass sieve seat lateral wall and stretch into the jet-propelled pipe in the middle of the sieve seat, and one side tilt up that two jet-propelled pipes are close to each other sets up, is provided with in the periphery of sieve seat to be the annular setting and with two jet-propelled pipe fixed connection annular pipe together, one side fixedly connected with of annular pipe is followed the control valve that the box top stretches out, is provided with on the control valve to be located the box top and can control the control valve of control valve switch.
Through adopting above-mentioned technical scheme, when stirring the effect relatively poor through the switch plate, open the control tube through the ooff valve, during external air enters into the annular pipe through the control tube, then spout the screen cloth bottom through jet-propelled pipe, upwards blow up the cement that blocks up the big granule of screen cloth, close the control tube through the switch valve after the clearance finishes.
The utility model discloses further set up to: the top both sides fixedly connected with two scraper blades of montant have seted up the inlet port coaxial with the montant in the montant, and the intercommunicating pore that communicates each other with the inlet port is seted up to montant bottom one side, and the intercommunicating pore is located the sieve seat below, and the venthole has all been seted up to two scraper blades one side, is provided with between venthole and the inlet port to set up the connecting hole that is used for communicating inlet port and venthole each other on scraper blade and montant.
By adopting the technical scheme, outside air enters the sieve base through the communicating hole, the air inlet hole, the connecting hole and the air outlet hole, and negative pressure is formed in the sieve base under the action of the exhaust fan.
The utility model discloses further set up to: the montant rotates to be connected in the bottom of sieve seat, and sieve seat bottom fixedly connected with drives the montant and carries out the pivoted motor.
Through adopting above-mentioned technical scheme, the motor drives the montant pivoted in the middle of the process and drives the scraper blade together and rotate, and the scraper blade can promote the cement of sieve seat bottom to fall in the middle of the connecting pipe.
The utility model discloses further set up to: one side of the scraper plate departing from the rotating shaft and one side of the bottom of the scraper plate are in mutual contact with the inner side wall and the bottom of the sieve base.
Through adopting above-mentioned technical scheme, the scraper blade can be abundant stir the cement in the sieve seat for keep away from the cement of connecting pipe department also can be quick fall into in the middle of the connecting pipe in the sieve seat.
The utility model discloses further set up to: the periphery of the abdicating hole is provided with a limiting ring fixedly connected to the top of the box body, and the inner diameter of the limiting ring is equal to the outer diameter of the screen cylinder.
Through adopting above-mentioned technical scheme, can fix a position a sieve section of thick bamboo through setting up the spacing ring for a sieve section of thick bamboo is located the sieve seat directly over.
The utility model discloses further set up to: the inboard sealed pad of fixed connection at the box top that is provided with of spacing ring, sieve section of thick bamboo bottom and sealed pad mutual contact.
Through adopting above-mentioned technical scheme, can make the leakage of being difficult to the air to appear between a sieve section of thick bamboo and the box through setting up sealed the pad.
To sum up, the utility model discloses compare and have following beneficial effect in prior art:
1. the utility model discloses a set up pivot and switch plate, when beginning to sieve, the staff rotated the pivot, and the pivot drives the switch plate in the middle of the process of rotating and stirs the cement on the screen cloth to make large granule cement can not cause the jam to the sieve mesh of screen cloth, thereby make the tiny granule that lies in the upper strata also can be filtered by the screen cloth, thereby improved the screening precision of cement;
2. the utility model discloses a set up jet-propelled pipe, annular pipe and control tube, when stirring the relatively poor time of effect through the switch plate, open the control tube through the ooff valve, during external air enters into the annular pipe through the control tube, then spout the screen cloth bottom through jet-propelled pipe, the cement that will block up the big granule of screen cloth upwards blows, closes the control tube through the switch valve after the clearance finishes.
Drawings
FIG. 1 is an isometric view of the complete structure of the embodiment;
FIG. 2 is a schematic view of an embodiment embodying a sieve base;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a cross-sectional view of a screen cylinder and a screen seat of an embodiment;
FIG. 5 is an enlarged view of the portion B of FIG. 4;
FIG. 6 is a sectional view of a blade of the embodiment;
FIG. 7 is a sectional view of a cyclone according to an embodiment.
In the figure: 1. a box body; 11. a hole of abdication; 2. a sieve base; 21. a connecting pipe; 3. a screen cylinder; 31. a limiting ring; 32. screening a screen; 33. a gasket; 4. a screen cover; 41. a rotating shaft; 42. a kick-out plate; 5. a gas ejector tube; 51. an annular tube; 52. a control tube; 53. a control valve; 6. a vertical rod; 61. a communicating hole; 62. an air inlet; 7. a cyclone; 71. an exhaust pipe; 72. a dust collecting bottle; 73. an exhaust fan; 74. a filter screen; 8. a squeegee; 81. connecting holes; 82. and an air outlet.
Detailed Description
The first embodiment is as follows: a negative pressure screen analyzer for cement fineness is shown in figure 1 and comprises a box body 1.
Referring to the attached drawings 2 and 3, the cement fineness negative pressure screen analyzer further comprises a bowl-shaped screen seat 2 fixedly connected to the top of the box 1 at the periphery of the top, a screen cylinder 3 arranged at the top of the box 1 and located above the screen seat 2, a spacing ring 31 fixedly connected to the top of the box 1 and used for limiting the screen cylinder 3, a screen cover 4 arranged at the top of the screen cylinder 3 and used for covering the top opening of the screen cylinder 3, a vertical rod 6 arranged at the bottom of the screen seat 2 and used for introducing air into the screen seat 2, a connecting pipe 21 fixedly connected to one side of the bottom of the screen seat 2, a cyclone cylinder 7 fixedly connected to the inner wall of the box 1, a dust bottle 72 screwed to the bottom of the cyclone cylinder 7, an exhaust pipe 71 fixedly connected to the top of the cyclone cylinder 7, an exhaust fan 73 fixedly connected to one end of the exhaust pipe 71, a rotating shaft 41 rotatably connected to the middle position of the top of the screen cover 4, two air injection pipes 5 fixedly connected to two sides of, An annular pipe 51 arranged around the sieve base 2 and fixedly connected with the two gas injection pipes 5, a control pipe 52 fixedly connected to one side of the annular pipe 51 and extending from the top of the box body 1, and a control valve 53 fixedly connected to the control pipe 52 and positioned above the box body 1; the side, close to each other, of the two gas nozzles 5 is obliquely arranged upwards; the connection pipe 21 is fixedly connected to the outer wall of the cyclone 7. The inner diameter of the limiting ring 31 is equal to the outer diameter of the screen drum 3, and the inner diameter of the screen drum 3 is smaller than the diameter of the abdicating hole 11.
Putting cement to be screened into a screen drum 3, and then placing the screen drum 3 at the top of the box body 1 and enabling the screen drum 3 to be located above the screen seat 2; then the suction fan 73 is turned on, air enters the screen seat 2 from the vertical rod 6 and is discharged through the connecting pipe 21, the cyclone cylinder 7 and the suction fan 73, the flow of the air in the screen seat 2 enables the bottom of the screen cylinder 3 to form negative pressure, and therefore fine cement particles in the screen cylinder 3 can fall into the screen seat 2; after entering the sieve base 2, the fine cement particles enter the cyclone 7 along with the air, and fall into the dust collecting bottle 72, and the air is discharged through the exhaust fan.
Referring to fig. 4 and 5, a horizontally disposed screen 32 is fixedly connected to the inner wall of the screen cylinder 3 near the bottom, the axis direction of the rotating shaft 41 is vertically disposed, two material shifting plates 42 are fixedly connected to two sides of one end of the bottom of the rotating shaft 41, and bristles in mutual contact with the top of the screen 32 are fixedly connected to the bottoms of the material shifting plates 42. Cement is placed on the screen 32, the rotating shaft 41 is rotated, and the cement is stirred through the stirring plate 42 and the bristles, so that large-particle cement is not easy to block the screen holes on the screen 32. The top of the box body 1 is provided with a yielding hole 11, the periphery of the top of the sieve seat 2 is fixedly connected to the box body 1 at the periphery of the yielding hole 11, and the top of the sieve seat 2 is flush with the top of the box body 1; the external diameter of a sieve section of thick bamboo 3 is greater than the diameter of sieve seat 2 hole 11 of stepping down, and the internal diameter of a sieve section of thick bamboo 3 equals the diameter of hole 11 of stepping down, and the internal diameter of spacing ring 31 equals the external diameter of a sieve section of thick bamboo 3 and spacing ring 31 and the coaxial setting of hole 11 of stepping down, and spacing ring 31 inboard is provided with the sealed pad 33 that is the annular setting of fixed connection at box 1 top, and the internal diameter and the external diameter of sealed pad 33 and the internal diameter and the external diameter of a sieve section of thick bamboo 3 equal. When the screen cylinder 3 is prevented, the bottom of the screen cylinder 3 is in contact with the sealing gasket 33, and the outer side of the screen cylinder 3 is in contact with the inner side of the limiting ring 31.
Referring to fig. 4 and 5, two scrapers 8 positioned in the sieve base 2 are fixedly connected to two sides of one end of the top of the vertical rod 6, and one side of the scraper 8 departing from the rotating shaft 41 and one side of the bottom of the scraper 8 are in contact with the inner side wall and the bottom of the sieve base 2; the bottom of the sieve base 2 is fixedly connected with a motor which is used for driving the vertical rod 6 to rotate. The motor drives and drives scraper blade 8 through montant 6 and rotate, and scraper blade 8 stirs the cement that falls into sieve seat 2 bottoms for fall into in the middle of connecting pipe 21.
Referring to fig. 5 and 6, an air inlet 62 coaxial with the vertical rod 6 is formed in the vertical rod 6, a communication hole 61 communicated with the air inlet 62 is formed in one side of the bottom of the vertical rod 6, the communication hole 61 is located below the sieve base 2, air outlet holes 82 are formed in one sides of the two scrapers 8, and a connecting hole 81 formed in the scrapers 8 and the air inlet 62 and used for communicating the air inlet 62 with the air outlet holes 82 is formed between the air outlet holes 82 and the air inlet 62. When the sieve analysis is performed, the outside air enters the sieve base 2 through the communication hole 61, the air inlet hole 62, the connection hole 81, and the air outlet hole 82.
Referring to fig. 7, a horizontally disposed filter screen 74 is fixedly connected to the inner wall of the cyclone 7, and the filter screen 74 is located above the end of the connection pipe 21 connected to the cyclone 7. The air entering the cyclone 7 is filtered by the filter screen 74, the cement particles fall to the bottom of the cyclone 7, and the air passes through the filter screen 74 and is discharged from the exhaust fan.
The working principle of the cement fineness negative pressure screen analyzer during use is as follows: putting cement needing screening into the screen 32, then placing the screen drum 3 on the top of the box body 1 and limiting through the limiting ring 31, then opening the pumping fan 73, enabling air to enter the screen seat 2 from the vertical rod 6 and then to be discharged through the connecting pipe 21, the cyclone 7 and the pumping fan 73, enabling the bottom of the screen 32 to form negative pressure due to the flow of the air in the screen seat 2, and enabling fine cement particles in the screen drum 3 to pass through the screen 32 and fall into the screen seat 2 under the action of the negative pressure; after entering the sieve base 2, the fine cement particles enter the cyclone 7 along with the air, and fall into the dust collecting bottle 72, and the air is discharged through the exhaust fan. Rotating the rotating shaft 41, and stirring the cement on the screen 32 through the stirring plate 42 and the bristles, so that the larger cement particles are not easy to block the sieve holes of the screen 32; when the function of the kick-out plate 42 and the bristles is poor, the control valve 53 is opened, outside air passes through the control pipe 52 and the annular pipe 51 and is finally sprayed onto the screen 32 through the air spraying pipe 5, larger cement particles in the screen holes of the screen 32 are blown out, the larger cement particles cannot continuously block the screen holes, and after the treatment is finished, the control valve 53 is closed.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a cement fineness negative pressure screen analysis appearance, including box (1), fixed connection is sieve base (2) that the bowl form set up at box (1) top, set up at box (1) top and be located sieve base (2) sieve section of thick bamboo (3) top, fixed connection is in sieve screen (32) of a sieve section of thick bamboo (3) bottom, set up at sieve lid (4) that be used for with sieve section of thick bamboo (3) open-top cover at sieve section of thick bamboo (3) top, the setting is used for the montant (6) of admitting air in sieve base (2) bottom, fixed connection is in connecting pipe (21) of sieve base (2) bottom one side, cyclone (7) of fixed connection on box (1) inner wall, can dismantle dust bottle (72) of connection bottom cyclone (7), fixed connection is in blast pipe (71) of cyclone (7) top, fixed connection is on blast pipe (71) deviate from extracting fan (73) of cyclone (7) one end and fixed connection is on cyclone (7) inner wall and be located even The connecting pipe (21) is close to a filter screen (74) at the top of one end of the cyclone cylinder (7);
the top of the box body (1) is provided with a yielding hole (11) penetrating through the top of the box body (1), the periphery of the top of the screen seat (2) is fixedly connected to the top of the box body (1) around the yielding hole (11), and the outer diameter of the screen cylinder (3) is larger than the diameter of the yielding hole (11);
the connecting pipe (21) is fixedly connected to the outer wall of the cyclone (7), and one side, close to the cyclone (7), of the connecting pipe (21) is arranged along the tangential direction of the periphery of the cyclone (7), and the connecting pipe is characterized in that: the cement screening device further comprises a rotating shaft (41) rotatably connected to the middle position of the top of the screening cover (4) and shifting plates (42) fixedly connected to two sides of one end of the bottom of the rotating shaft (41) and used for shifting cement on the screening net (32).
2. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: the bottom of the kick-out plate (42) is fixedly connected with a plurality of brush hairs which are mutually contacted with the top surface of the screen (32).
3. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: two side fixedly connected with of sieve seat (2) pass sieve seat (2) lateral wall and stretch into jet-propelled pipe (5) in the middle of sieve seat (2), one side tilt up that two jet-propelled pipe (5) are close to each other sets up, be provided with on the periphery of sieve seat (2) and be the annular setting and with two jet-propelled pipe (5) fixed connection annular pipe (51) together, one side fixedly connected with of annular pipe (51) is from control tube (52) that box (1) top stretches out, be provided with on control tube (52) and be located box (1) top and can control valve (53) of control tube (52) switch.
4. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: the top both sides fixedly connected with two scraper blades (8) of montant (6), set up in montant (6) with coaxial inlet port (62) of montant (6), intercommunicating pore (61) that communicate each other with inlet port (62) are seted up to montant (6) bottom one side, intercommunicating pore (61) are located sieve seat (2) below, venthole (82) have all been seted up to two scraper blades (8) one side, be provided with between venthole (82) and inlet port (62) and set up being used for on scraper blade (8) and montant (6) connecting hole (81) that communicate each other inlet port (62) and venthole (82).
5. The cement fineness negative pressure screen analyzer of claim 4, characterized in that: the vertical rod (6) is rotatably connected to the bottom of the sieve base (2), and the bottom of the sieve base (2) is fixedly connected with a motor which drives the vertical rod (6) to rotate.
6. The cement fineness negative pressure screen analyzer of claim 5, characterized in that: one side of the scraper (8) departing from the rotating shaft (41) and one side of the bottom of the scraper (8) are in contact with the inner side wall and the bottom of the sieve base (2).
7. The cement fineness negative pressure screen analyzer of claim 1, characterized in that: the periphery of the abdicating hole (11) is provided with a limiting ring (31) fixedly connected to the top of the box body (1), and the inner diameter of the limiting ring (31) is equal to the outer diameter of the screen cylinder (3).
8. The cement fineness negative pressure screen analyzer of claim 7, characterized in that: the inner side of the limiting ring (31) is provided with a sealing gasket (33) fixedly connected to the top of the box body (1), and the bottom of the screen cylinder (3) is in contact with the sealing gasket (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921102644.6U CN210497238U (en) | 2019-07-13 | 2019-07-13 | Cement fineness negative pressure screen analysis instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921102644.6U CN210497238U (en) | 2019-07-13 | 2019-07-13 | Cement fineness negative pressure screen analysis instrument |
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| CN210497238U true CN210497238U (en) | 2020-05-12 |
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| CN201921102644.6U Active CN210497238U (en) | 2019-07-13 | 2019-07-13 | Cement fineness negative pressure screen analysis instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906019A (en) * | 2020-07-07 | 2020-11-10 | 湖南康易达绿茵科技有限公司 | Production process and production equipment of ionized calcium |
| CN115254617A (en) * | 2022-08-01 | 2022-11-01 | 重庆正诚标研工程检测有限公司 | Cement fineness negative pressure screen analysis appearance with autoinjection mechanism |
-
2019
- 2019-07-13 CN CN201921102644.6U patent/CN210497238U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111906019A (en) * | 2020-07-07 | 2020-11-10 | 湖南康易达绿茵科技有限公司 | Production process and production equipment of ionized calcium |
| CN115254617A (en) * | 2022-08-01 | 2022-11-01 | 重庆正诚标研工程检测有限公司 | Cement fineness negative pressure screen analysis appearance with autoinjection mechanism |
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