CN216396997U

CN216396997U - Engineering detects uses cement fineness sieving mechanism

Info

Publication number: CN216396997U
Application number: CN202122569600.8U
Authority: CN
Inventors: 王玉英
Original assignee: Yunnan Zhibang Civil Construction Project Management Co ltd
Current assignee: Yunnan Zhibang Civil Construction Project Management Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-04-29
Anticipated expiration: 2031-10-25

Abstract

The utility model belongs to the technical field of engineering detection, and particularly relates to a cement fineness screening device for engineering detection, which comprises a box body, a barrel body, a top box and a screen cylinder, wherein the barrel body is fixedly arranged at the top of the box body, supporting legs are fixedly arranged at four corners of the bottom of the box body, the top box is movably arranged at the top of the barrel body, the screen cylinder is positioned in the barrel body, a lifting motor is fixedly arranged on the inner wall of the bottom of the top box, a driving chain wheel is fixedly sleeved on an output shaft of the lifting motor, two adjusting screw rods are rotatably arranged on the inner wall of the bottom of the top box, driven chain wheels are fixedly sleeved at the top ends of the two adjusting screw rods, and the two driven chain wheels and the driving chain wheel are in transmission connection with a same chain. The cement screening device is reasonable in design and simple in operation, can effectively avoid blockage of the screen cylinder, can stir cement in the screen cylinder, effectively improves screening efficiency, and is convenient to use.

Description

Engineering detects uses cement fineness sieving mechanism

Technical Field

The utility model relates to the technical field of engineering detection, in particular to a cement fineness screening device for engineering detection.

Background

The fineness of cement is an index indicating the degree to which cement is ground or the degree of dispersion of cement. Typically, cement is composed of many grades of cement particles. The structure of the cement grain composition has a great influence on the hydration hardening speed, water demand, workability, heat release speed, and particularly strength of cement. Under general conditions, when cement particles are 0-10 microns, hydration is fastest, when the cement particles are 3-30 microns, the activity of the cement is the largest, when the activity is more than 60 microns, the activity is small, the hydration is slow, when the activity is more than 90 microns, only surface hydration can be carried out, and only the effect of micro-aggregates is achieved. Therefore, under general conditions, in order to better exert the gelling performance of cement and improve the early strength of the cement, the fineness of the cement needs to be improved, and the gradation proportion of 3-30 microns needs to be increased. However, it must be noted that the cement has too fine fineness and too large specific surface area, and the water demand of the cement is too large because too much water causes the increase of porosity of the hardened cement paste to reduce the strength. Meanwhile, the fineness of the cement is too fine, and other properties of the cement are also influenced, such as quick reduction of the activity of the cement in a storage period, larger water requirement of the cement, increase of the shrinkage of a cement product, reduction of frost resistance and the like. In addition, the performance of the cement mill is obviously affected by the fineness of the cement, so that the yield is reduced, and the power consumption is increased. Therefore, the fineness of the cement must be reasonably controlled in production, so that the cement has reasonable grain composition.

Chinese patent with retrieval application number 202020377568.6 discloses a cement fineness sieving mechanism for engineering inspection, including motor, dust catcher, go up box and lower box, the first bevel gear of output fixed connection of motor, first bevel gear meshing connection second bevel gear, lower box upside fixed connection goes up the box, and lower box downside inner wall fixed connection motor sets up the closing cap, guarantees that inside cement volume can not reduce weight because of the air flow, sets up the flap, can compress tightly the sieve section of thick bamboo, reduces the shake of sieve section of thick bamboo, makes the sieve section of thick bamboo rotate more stably, sets up spring and backing plate, guarantees that the flap can in close contact with the sieve section of thick bamboo, sets up carousel and card handle, realizes getting at will of sieve section of thick bamboo, is convenient for weigh cement. The utility model has simple structure, separates the cement materials by using a centrifugal mode, has simple and convenient calculation and weighing modes, can recycle the residual materials after weighing, reduces the detection cost and has available value in the technical field of engineering detection. However, when cement is sieved through the sieve cylinder under the action of centrifugal force, cement powder is easily adhered to the inner wall of the sieve cylinder, so that sieve blockage can occur, sieving efficiency can be reduced, and the sieving working efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of the prior art and provides a cement fineness screening device for engineering detection.

The technical purpose of the utility model is realized by the following technical scheme: a cement fineness screening device for engineering detection comprises a box body, a barrel body, a top box and a screen drum, wherein the barrel body is fixedly arranged at the top of the box body, supporting legs are fixedly arranged at four corners of the bottom of the box body, the top box is movably arranged at the top of the barrel body, the screen drum is positioned in the barrel body, a lifting motor is fixedly arranged on the inner wall of the bottom of the top box, a driving chain wheel is fixedly sleeved on an output shaft of the lifting motor, two adjusting screw rods are rotatably arranged on the inner wall of the bottom of the top box, driven chain wheels are fixedly sleeved at the top ends of the two adjusting screw rods, the two driven chain wheels and the driving chain wheel are in transmission connection with a same chain, a fixing ring is fixedly arranged at the bottom of the top box, a circular ring is fixedly arranged at the top of the screen drum, a supporting ring is fixedly arranged on the inner wall of the barrel body, and a fixing shaft is fixedly arranged at the bottom of the top box, and a plurality of stirring rods are fixedly arranged at the outer side of the fixed shaft, one end of each stirring rod, which is far away from the fixed shaft, on the same vertical axis is fixedly provided with a same side scraping plate, the side scraping plates are contacted with the inner wall of the screen cylinder, the bottom end of the fixed shaft is fixedly provided with a bottom scraping plate, the bottom scraping plate is contacted with the inner wall of the bottom of the screen cylinder, an arc plate is fixedly arranged on the side wall of the cylinder body, a driving motor is fixedly arranged on the inner wall of the bottom of the cylinder body, a rotating shaft is rotatably arranged on the arc plate, the bottom end of the rotating shaft is fixedly connected with an output shaft of the driving motor, an air pipe is fixedly arranged on the inner wall of the top of the box body, an air inlet of the air pipe is communicated with the cylinder body, an air exhaust fan is fixedly arranged on the inner wall of the bottom of the box body, an air outlet of the air pipe is communicated with an air inlet of the exhaust fan, and a plurality of discharging pipes are fixedly arranged on the inner wall of the bottom of the box body, and the air outlet of the exhaust fan is communicated with the blanking pipe.

Preferably, the bottom of the screen cylinder is fixedly provided with a tenon sleeve, the top end of the rotating shaft is welded with a tenon, and the tenon is movably clamped in the tenon sleeve.

Preferably, two support plates are fixedly mounted on the outer side of the cylinder, threaded sleeves are fixedly mounted on the two support plates, and the two threaded sleeves are respectively in threaded connection with the corresponding adjusting screw rods.

Preferably, the top side of the circular ring is fixedly provided with a limiting ring, and the outer peripheral surface of the limiting ring is in sliding connection with the inner peripheral surface of the fixing ring.

Preferably, a plurality of sliding holes are formed in the bottom side of the fixing ring, a sliding plate is slidably mounted in the sliding holes, a supporting rod is fixedly mounted on the bottom side of the sliding plate, two supporting wheels are rotatably mounted on the supporting rod, the supporting wheels are all rotatably mounted on the top side of the circular ring, a buffer spring is fixedly mounted on the top side of the sliding plate, and one end, far away from the sliding plate, of the buffer spring is fixedly connected with the inner wall of the top of the sliding hole.

Preferably, the bottom side of the circular ring is provided with a circular groove, the top side of the support ring is provided with a plurality of balls in a rolling manner, and the balls are arranged in the circular groove in a rolling manner.

Preferably, a plurality of air inlets are formed in the side wall of the barrel body, arc-shaped screen plates are arranged in the air inlets, a plurality of rotating pins are rotatably mounted on the inner walls of the front side and the rear side of each air inlet, rotating plates are fixedly mounted on the outer sides of the rotating pins, and adjacent rotating plates are in contact with each other.

The utility model has the beneficial effects that: according to the utility model, the screen cylinder can be driven to rotate under the mutual matching among the driving motor, the rotating shaft, the tenon and the tenon sleeve, and the screen cylinder can keep higher stability in the rotating process under the mutual matching among the supporting wheels, the balls and other components;

according to the utility model, the screened cement is extracted through the air pipe under the action of the exhaust fan and is discharged through the discharging pipe, meanwhile, when the exhaust fan works, the air inlet is opened under the action of the plurality of rotating plates, when the exhaust fan stops working, the plurality of rotating plates can automatically seal the air inlet, and meanwhile, sundries can be effectively prevented from entering the cylinder body under the coordination of the arc-shaped screen plate;

according to the utility model, the lifting operation of the top box can be controlled by the cooperation of the lifting motor, the driving chain wheel, the chain, the driven chain wheel, the adjusting screw rod and the screw sleeve, and the screen cylinder can be conveniently and quickly disassembled and assembled under the action of the tenon sleeve and the tenon head;

according to the utility model, under the combined action of the fixed shaft, the stirring rod, the side scraping plate and the bottom scraping plate, the stirring operation of cement in the screen cylinder can be realized when the screen cylinder rotates, and meanwhile, the screen cylinder can be effectively prevented from being blocked, so that the screening efficiency is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic perspective view of a cement fineness screening device for engineering detection according to the present invention;

FIG. 2 is a schematic sectional structure diagram of a cement fineness screening device for engineering detection according to the present invention;

FIG. 3 is a schematic structural diagram of part A of the engineering detection cement fineness screening device provided by the utility model;

FIG. 4 is a schematic structural diagram of a part B of the engineering detection cement fineness screening device provided by the utility model;

fig. 5 is a schematic structural diagram of a part C in the cement fineness screening device for engineering detection according to the present invention.

In the figure: 1. a box body; 2. a barrel; 3. a top box; 4. a screen cylinder; 5. a lifting motor; 6. a drive sprocket; 7. adjusting the screw rod; 8. a driven sprocket; 9. a chain; 10. a threaded sleeve; 11. a fixing ring; 12. a circular ring; 13. a limiting ring; 14. a support ring; 15. a fixed shaft; 16. a stirring rod; 17. a side flight; 18. a bottom squeegee; 19. an arc-shaped plate; 20. a drive motor; 21. a rotating shaft; 22. an air duct; 23. an exhaust fan.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Referring to fig. 1-5, a cement fineness screening device for engineering detection comprises a box body 1, a cylinder body 2, a top box 3 and a screen cylinder 4, wherein the cylinder body 2 is fixedly arranged at the top of the box body 1, four corners of the bottom of the box body 1 are respectively and fixedly provided with a supporting leg, the device can be stably supported by the supporting legs, the top box 3 is movably arranged at the top of the cylinder body 2, the screen cylinder 4 is positioned in the cylinder body 2, the inner wall of the bottom of the top box 3 is fixedly provided with a lifting motor 5, an output shaft of the lifting motor 5 is fixedly sleeved with a driving sprocket 6, the inner wall of the bottom of the top box 3 is rotatably provided with two adjusting screws 7, the top ends of the two adjusting screws 7 are respectively and fixedly sleeved with a driven sprocket 8, the two driven sprockets 8 and the driving sprocket 6 are in transmission connection with a same chain 9, the bottom of the top box 3 is fixedly provided with a fixing ring 11, and the top of the screen cylinder 4 is fixedly provided with a circular ring 12, the inner wall of the barrel body 2 is fixedly provided with a support ring 14, the bottom of the top box 3 is fixedly provided with a fixed shaft 15, the outer side of the fixed shaft 15 is fixedly provided with a plurality of stirring rods 16, one end of each of the plurality of stirring rods 16 positioned on the same vertical axis, which is far away from the fixed shaft 15, is fixedly provided with the same side scraping plate 17, the side scraping plates 17 are contacted with the inner wall of the screen barrel 4, the bottom of the fixed shaft 15 is fixedly provided with a bottom scraping plate 18, the bottom scraping plate 18 is contacted with the inner wall of the bottom of the screen barrel 4, the side wall of the barrel body 2 is fixedly provided with an arc-shaped plate 19, the inner wall of the bottom of the barrel body 2 is fixedly provided with a driving motor 20, the arc-shaped plate 19 is rotatably provided with a rotating shaft 21, the bottom of the rotating shaft 21 is fixedly connected with an output shaft of the driving motor 20, the inner wall of the top of the box body 1 is fixedly provided with an air pipe 22, an air inlet of the air pipe 22 is communicated with the barrel body 2, and the inner wall of the bottom of the box body 1 is fixedly provided with an exhaust fan 23, and the air outlet of the air pipe 22 is communicated with the air inlet of the exhaust fan 23, a plurality of blanking pipes are fixedly arranged on the inner wall of the bottom of the box body 1, and the air outlet of the exhaust fan 23 is communicated with the blanking pipes.

In this embodiment, the bottom fixed mounting of a sieve section of thick bamboo 4 has the tenon cover, and the top welding of pivot 21 has the tenon, and the tenon activity joint can drive a sieve section of thick bamboo 4 through tenon and tenon cover and rotate when pivot 21 rotates in the tenon cover, can realize carrying out quick assembly disassembly to a sieve section of thick bamboo 4 simultaneously.

In this embodiment, two support plates are fixedly mounted on the outer side of the cylinder 2, threaded sleeves 10 are fixedly mounted on the two support plates, the two threaded sleeves 10 are respectively in threaded connection with corresponding adjusting screw rods 7, and the top box 3 can be controlled to be lifted through the threaded sleeves 10 and the adjusting screw rods 7.

In this embodiment, top side fixed mounting of ring 12 has spacing ring 13, and the outer peripheral face of spacing ring 13 and the inner peripheral surface sliding connection of solid fixed ring 11 can inject the gesture of a sieve section of thick bamboo 4 through solid fixed ring 11 and spacing ring 13 to can make a sieve section of thick bamboo 4 keep better stability when rotating, can avoid the cement powder that does not sieve to escape simultaneously.

In this embodiment, a plurality of slide holes have been seted up to the bottom side of solid fixed ring 11, slidable mounting has the sliding plate in the slide hole, the bottom side fixed mounting of sliding plate has the bracing piece, rotate on the bracing piece and install two supporting wheels, a plurality of supporting wheels all roll and install the top side at ring 12, the top side fixed mounting of sliding plate has buffer spring, and buffer spring keeps away from the one end of sliding plate and the top inner wall fixed connection of slide hole, through the sliding plate, the bracing piece, can carry out stable pressure to a sieve section of thick bamboo 4 under the mutually supporting between buffer spring and a plurality of supporting wheels and hold, can provide certain buffering simultaneously.

In this embodiment, a circular groove is formed in the bottom side of the circular ring 12, a plurality of balls are installed on the top side of the support ring 14 in a rolling manner, and the plurality of balls are all installed in the circular groove in a rolling manner, so that the sieve drum 4 can keep stable rotation under the action of the circular groove and the plurality of balls.

In this embodiment, a plurality of air intakes have been seted up on the lateral wall of barrel 2, be provided with the arc otter board in the air intake, rotate on the both sides inner wall around the air intake and install a plurality of rotating pins, the equal fixed mounting in outside of a plurality of rotating pins has the rotor plate, and contact between the adjacent rotor plate, can avoid debris to get into in the barrel 2 through the arc otter board, simultaneously at air exhauster 23 during operation, a plurality of rotor plates take place to deflect, thereby can make outside air pass through in air intake entering barrel 2, can seal the air intake when air exhauster 23 stop work.

The working principle is as follows: when in use, firstly, a power supply is switched on, the lifting motor 5 is started, the lifting motor 5 drives the corresponding adjusting screw rods 7 to rotate through the driving chain wheel 6, the chain 9 and the two driven chain wheels 8, the top box 3 and the barrel body 2 can be separated and move upwards under the matching of the screw sleeve 10, the fixing rings 11 are driven to separate the plurality of supporting wheels from contact with the circular rings, cement to be screened is placed in the screen barrel 4, then the lifting motor 5 is controlled to rotate reversely, the top box 3 is reset, the driving motor 20 and the exhaust fan 23 are started, the driving motor 20 drives the screen barrel 4 to rotate through the matching of the rotating shaft 21, the tenon and the tenon sleeve, the function of stirring the cement can be realized under the combined action of the fixing shaft 15, the stirring rod 16, the side scraper 17 and the bottom scraper 18 while the screen barrel 4 can be prevented from being blocked, the screened cement is extracted from the barrel body 2 through the air pipe 22 under the action of the exhaust fan 23 and is discharged through the discharging pipe, meanwhile, cement accumulation in the barrel body 2 can be effectively avoided under the action of the arc-shaped plate 19.

The cement fineness screening device for engineering detection provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The cement fineness screening device for engineering detection comprises a box body (1), a barrel body (2), a top box (3) and a screen drum (4), and is characterized in that the barrel body (2) is fixedly installed at the top of the box body (1), supporting legs are fixedly installed at four corners of the bottom of the box body (1), the top box (3) is movably installed at the top of the barrel body (2), the screen drum (4) is located in the barrel body (2), a lifting motor (5) is fixedly installed on the inner wall of the bottom of the top box (3), a driving chain wheel (6) is fixedly sleeved on an output shaft of the lifting motor (5), two adjusting screw rods (7) are rotatably installed on the inner wall of the bottom of the top box (3), a driven chain wheel (8) is fixedly sleeved at the top ends of the two adjusting screw rods (7), and the two driven chain wheels (8) and the driving chain wheel (6) are in transmission connection with a same chain (9), the bottom fixed mounting of top case (3) has solid fixed ring (11), the top fixed mounting of a sieve section of thick bamboo (4) has ring (12), fixed mounting has support ring (14) on the inner wall of barrel (2), the bottom fixed mounting of top case (3) has fixed axle (15), and the outside fixed mounting of fixed axle (15) has a plurality of puddlers (16), and the one end fixed mounting who keeps away from fixed axle (15) of a plurality of puddlers (16) that are located same vertical axis has same side scraper blade (17), and side scraper blade (17) contacts with the inner wall of a sieve section of thick bamboo (4), the bottom fixed mounting of fixed axle (15) has end scraper blade (18), and end scraper blade (18) contacts with the bottom inner wall of a sieve section of thick bamboo (4), fixed mounting has arc (19) on the lateral wall of barrel (2), fixed mounting has driving motor (20) on the bottom inner wall of barrel (2), rotate on arc (19) and install pivot (21), and the output shaft fixed connection of the bottom of pivot (21) and driving motor (20), fixed mounting has tuber pipe (22) on the top inner wall of box (1), and the air intake and barrel (2) of tuber pipe (22) are linked together, fixed mounting has air exhauster (23) on the bottom inner wall of box (1), and the air outlet of tuber pipe (22) is linked together with the air intake of air exhauster (23), fixed mounting has a plurality of unloading pipes on the bottom inner wall of box (1), and the air outlet and the unloading pipe of air exhauster (23) are linked together.

2. The cement fineness screening device for engineering detection according to claim 1, characterized in that: the bottom of the screen cylinder (4) is fixedly provided with a tenon sleeve, the top end of the rotating shaft (21) is welded with a tenon, and the tenon is movably clamped in the tenon sleeve.

3. The cement fineness screening device for engineering detection according to claim 1, characterized in that: two support plates are fixedly mounted on the outer side of the barrel body (2), threaded sleeves (10) are fixedly mounted on the two support plates, and the two threaded sleeves (10) are respectively in threaded connection with the corresponding adjusting screw rods (7).

4. The cement fineness screening device for engineering detection according to claim 1, characterized in that: the top side of the circular ring (12) is fixedly provided with a limiting ring (13), and the outer peripheral surface of the limiting ring (13) is in sliding connection with the inner peripheral surface of the fixing ring (11).

5. The cement fineness screening device for engineering detection according to claim 1, characterized in that: the bottom side of the fixed ring (11) is provided with a plurality of sliding holes, a sliding plate is slidably mounted in the sliding holes, a supporting rod is fixedly mounted at the bottom side of the sliding plate, two supporting wheels are rotatably mounted on the supporting rod, the supporting wheels are all rotatably mounted at the top side of the circular ring (12), a buffer spring is fixedly mounted at the top side of the sliding plate, and one end, far away from the sliding plate, of the buffer spring is fixedly connected with the inner wall of the top of the sliding hole.

6. The cement fineness screening device for engineering detection according to claim 1, characterized in that: the bottom side of the circular ring (12) is provided with a circular groove, the top side of the supporting ring (14) is provided with a plurality of balls in a rolling mode, and the balls are all arranged in the circular groove in a rolling mode.

7. The cement fineness screening device for engineering detection according to claim 1, characterized in that: a plurality of air inlets are formed in the side wall of the barrel body (2), arc-shaped screen plates are arranged in the air inlets, a plurality of rotating pins are rotatably mounted on the inner walls of the front side and the rear side of each air inlet, rotating plates are fixedly mounted on the outer sides of the rotating pins, and adjacent rotating plates are in contact with each other.