CN215784681U

CN215784681U - Magnesium oxide expanding agent sieving device

Info

Publication number: CN215784681U
Application number: CN202121227638.0U
Authority: CN
Inventors: 李�根; 黄正友; 罗小佳; 李明; 李健
Original assignee: Guangdong Yuesheng Special Building Materials Co ltd
Current assignee: Guangdong Yuesheng Special Building Materials Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-02-11
Anticipated expiration: 2031-06-02

Abstract

The utility model provides a magnesium oxide expanding agent sieving device which comprises a barrel, a sieving assembly and a control system, wherein the sieving assembly comprises a motor, a round brush, a standard sieve and a material receiving disc, the standard sieve is arranged in the middle of the barrel, the round brush is arranged on the upper part of the barrel corresponding to the top of the standard sieve and is connected with the motor through a rotating shaft, the top end of the rotating shaft penetrates through a top cover of the barrel, and the material receiving disc is arranged on the lower part of the barrel corresponding to the bottom of the standard sieve; the control system comprises a main control computer and a digital display weighing instrument, the main control computer is respectively connected with the digital display weighing instrument and the motor, and the digital display weighing instrument is connected with the material receiving disc. The utility model has simple operation and high efficiency, can reduce dust damage and save labor cost.

Description

Magnesium oxide expanding agent sieving device

Technical Field

The utility model belongs to the technical field of building material equipment, and particularly relates to a magnesium oxide expanding agent sieving device.

Background

Cracking is one of the common problems in concrete use, and the cracking can influence the service performance and service time of the concrete. There are many methods for inhibiting concrete cracking, and the introduction of an expanding agent into the concrete mix ratio is one of the common methods. The expansion agent has various types, and the commonly used expansion agent comprises calcium oxide, calcium sulphoaluminate and magnesium oxide, wherein the magnesium oxide expansion agent has the characteristics of stable expansion product, adjustable expansion performance and the like, can effectively inhibit the shrinkage of concrete, reduces the cracking of the concrete and has obvious application effect in mass concrete.

The magnesium oxide expanding agent is obtained by high-temperature calcination of a magnesium-containing ore source, the particle size of magnesium oxide expanding agent particles is not required to be too large in practical application, if the particle size of the magnesium oxide expanding agent particles is too large, the magnesium oxide expanding agent particles cannot be fully mixed with each other, the uniformity and the stability of the performance of the magnesium oxide expanding agent are further influenced, in addition, the magnesium oxide expanding agent with the too large particle size has higher expansion energy but is unfavorable for the strength of concrete, and the reaction time is prolonged due to the too large particle size of the magnesium oxide, so that the hidden danger is brought to the later stability of a concrete structure. In order to make the magnesia expansive agent better serve actual engineering, the building material industry standard CBMF19-2017 magnesium oxide expansive agent for concrete stipulate that the fineness of the magnesia expansive agent meets the requirement, and the screen residue of a 80-micrometer square-hole screen is less than or equal to 5.0 percent, and the screen residue of a 1.18-mm square-hole screen is less than or equal to 0.5 percent. The mode that mainly adopts the manual work to sieve at present inspects the magnesia swelling agent fineness, and the manual work sieves and need take the brush to operate repeatedly, and efficiency is slow, and at this in-process operation personnel inhale the dust easily, influences healthyly.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a magnesium oxide expanding agent sieving device to realize intelligent sieving.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the magnesium oxide expanding agent sieving device is characterized by comprising a barrel, a sieving assembly and a control system, wherein the sieving assembly comprises a motor, a round brush, a standard sieve and a material receiving disc, the standard sieve is arranged in the middle of the barrel, the round brush is arranged on the upper part of the barrel corresponding to the top of the standard sieve and is connected with the motor through a rotating shaft, the top end of the rotating shaft penetrates through the top cover of the barrel, and the material receiving disc is arranged on the lower part of the barrel corresponding to the bottom of the standard sieve; the control system comprises a main control computer and a digital display weighing instrument, wherein the main control computer is respectively connected with the digital display weighing instrument and the motor, and the digital display weighing instrument is connected with the material receiving disc.

According to the scheme, the feeding hopper is arranged above the top cover of the barrel, and the discharging hopper is arranged at the center of the bottom of the receiving disc.

According to the scheme, the bottom end of the rotating shaft is connected with the position, close to the edge, of the round brush to form eccentric connection.

According to the scheme, the round brush is detachably connected with the rotating shaft.

According to the scheme, the feed hopper and the discharge hopper are of conical structures.

The utility model has the beneficial effects that: the utility model provides a magnesium oxide expanding agent device that sieves, by the expanding agent weight of main control computer monitoring take-up (stock) pan, but reaching the automatic shutdown after setting for the requirement and sieving, the in-process of sieving, steerable motor speed realizes the purpose of control efficiency of sieving, has improved the degree of automation of sieving greatly, has reduced manual operation and dust injury, improves the efficiency of sieving.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Wherein: 1. a barrel; 2. an electric motor; 3. a round brush; 4. standard screening; 5. a take-up pan; 6. a rotating shaft; 7. a main control machine; 8. a digital display weighing instrument; 9. a feed hopper; 10. a discharge hopper.

Detailed Description

The present invention is further illustrated by the following figures and specific examples, it is to be understood that these examples are given solely for the purpose of illustration and are not intended to limit the scope of the utility model, which is to be determined by the appended claims as a matter of routine modification by those skilled in the art.

As shown in figure 1, the magnesium oxide expanding agent sieving device comprises a barrel body 1, a sieving assembly and a control system, wherein the sieving assembly comprises a motor 2, a round brush 3, a standard sieve 4 and a material receiving disc 5, the standard sieve is arranged in the middle of the barrel body, the round brush is arranged at the upper part of the barrel body corresponding to the top of the standard sieve and is connected with the motor through a rotating shaft 6, the top end of the rotating shaft penetrates through the top cover of the barrel body, and the material receiving disc is arranged at the lower part of the barrel body corresponding to the bottom of the standard sieve; the control system comprises a main control computer 7 and a digital display weighing instrument 8, wherein the main control computer is respectively connected with the digital display weighing instrument and the motor, and the digital display weighing instrument is connected with the receiving tray. The digital display weighing instrument can display the expansion dosage in the receiving disc in real time and feed back the expansion dosage to the main control computer, and the main control computer can automatically calculate the screen allowance and stop the whole screening process. The motor has different gears, and the sieving speed of the device can be adjusted by selecting different gears.

A feed hopper 9 is arranged above the top cover of the cylinder body, and a discharge hopper 10 is arranged at the center of the bottom of the receiving disc. The feed hopper and the discharge hopper can be of conical structures, and the conical structures can prevent powder from spilling.

The bottom end of the rotating shaft is connected with the position, close to the edge, of the circular brush to form eccentric connection, so that the circular brush can contact the whole standard sieve while rotating. The standard sieve can be replaced according to actual requirements, and the diameter of the sieve pores can be adjusted.

The round brush and the rotating shaft are detachably connected, and the round brushes with different diameters can be replaced according to the amount of the screened materials.

During the use, at first according to the magnesium oxide expanding agent weight that needs were weighed, select suitable round brush and the standard sieve of sieving, then open the main control computer, the magnesium oxide that will weigh is poured into the machine inside through the feeder hopper, select suitable motor gear, under the drive of rotation axis, the round brush begins the operation on the standard sieve, the powder that sieves falls into on the take-off (stock) pan, the data on the take-off (stock) pan passes back the main control computer through the digital display weighing instrument, treat this sieving process after, can take out the sifting material through a hopper. If the sieving rate of other apertures needs to be measured and calculated, only the standard sieve needs to be replaced, and the operation is continuously repeated.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which shall be covered by the claims of the present invention.

Claims

1. The magnesium oxide expanding agent sieving device is characterized by comprising a barrel, a sieving assembly and a control system, wherein the sieving assembly comprises a motor, a round brush, a standard sieve and a material receiving disc, the standard sieve is arranged in the middle of the barrel, the round brush is arranged on the upper part of the barrel corresponding to the top of the standard sieve and is connected with the motor through a rotating shaft, the top end of the rotating shaft penetrates through the top cover of the barrel, and the material receiving disc is arranged on the lower part of the barrel corresponding to the bottom of the standard sieve; the control system comprises a main control computer and a digital display weighing instrument, wherein the main control computer is respectively connected with the digital display weighing instrument and the motor, and the digital display weighing instrument is connected with the material receiving disc.

2. The magnesium oxide expanding agent sieving device according to claim 1, wherein a feed hopper is arranged above the top cover of the cylinder body, and a discharge hopper is arranged at the center of the bottom of the receiving tray.

3. The magnesium oxide expanding agent sieving device according to claim 2, wherein the bottom end of the rotating shaft is connected with the position of the round brush near the edge to form an eccentric connection.

4. The magnesium oxide expanding agent sieving device according to claim 3, wherein the round brush is detachably connected with the rotating shaft.

5. The magnesium oxide expanding agent sieving device according to claim 2, wherein the feed hopper and the discharge hopper are of conical structure.