CN209205441U - A kind of concrete material grinding device - Google Patents

Abstract

The utility model discloses a concrete material grinding device, which comprises a box body. A rotatable grinding bin is arranged in the box body. The shaft is connected with the first bevel gear, the first bevel gear meshes with the second bevel gear, and the input end of the second bevel gear is connected with the output shaft of the first motor; a vibration screening device is arranged under the grinding chamber; the utility model passes through the rotation of the grinding chamber , so that the grinding efficiency of concrete materials is greatly enhanced. Through the cooperation between the cam, the screen and the compression spring, the automatic vibration screening process of the screen can be realized, so that the fineness of the ground material particles is more in line with the requirements.

Description

A kind of concrete material grinding device

technical field

The utility model relates to the field of concrete material processing, in particular to a concrete material grinding device.

Background technique

The fineness gradation of concrete materials has an extremely important effect on the durability of concrete materials, in the process of concrete mixing, pouring and engineering construction. In order to ensure the quality of the structure, most of the grinding materials are required to improve the performance of the concrete. Microscopically speaking, the concrete will inevitably produce many pores including capillary pores and gelation pores during the forming process. Affecting the impermeability of concrete, its permeability will be greatly increased, and the physical and chemical reactions produced by the intrusion of harmful media will have a huge negative impact on the durability of concrete. At present, scholars at home and abroad have shown that the permeability of concrete can be improved in their research. One of the methods is to reduce the fineness of the concrete material by grinding the concrete material, so that during the curing and molding process of the material, the material with extremely small fineness particles can block the pores, thereby achieving the purpose of reducing the permeability of the concrete. This method has been proved by experiments It is indeed of great benefit to reduce the permeability of concrete.

At present, in the grinding test of concrete materials in the laboratory, the machine used is mainly to rotate the grinding bin to provide centrifugal force to drive the various sizes and shapes of iron balls, iron blocks and other objects placed in the bin, as well as the cementitious materials to roll and rotate through smashing, friction, and grinding. The method of grinding and pressing reduces the fineness of the material. At the same time, the grinding inlet is currently located in the middle of the grinding chamber, and is fixed by the cover plate and the cover plate fixing strip combined with screws. When feeding and discharging, when the inlet and outlet cannot just fit the outer frame cover plate, it is necessary to turn on the switch repeatedly. The adjustment of the grinding chamber is more random, time-consuming and labor-intensive, and more troublesome. Secondly, the baffle plate for feeding and discharging materials only prevents the iron balls from falling in the grinding bin, and cannot play a screening role, resulting in the mixing of insufficiently ground materials, which will cause certain errors in the experimental results and lead to inaccurate experimental results.

The above-mentioned grinders currently used in the laboratory are time-consuming, and are not conducive to continuous operation of the experiment due to low efficiency in experiments requiring a large amount of material grinding. In view of this, it is very necessary to design a suitable concrete material grinding device.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages and provide a concrete material grinding device to improve the grinding efficiency and make the particle fineness of the ground materials more meet the requirements.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solution: a concrete material grinding device, including a box body, and a rotatable grinding bin is arranged in the box body, and the two ends of the grinding bin pass through the rotating shaft It is connected with the bearing provided on the side of the box, the rotating shaft at the driving end of the grinding chamber is connected with the first bevel gear, the first bevel gear meshes with the second bevel gear, and the input end of the second bevel gear is connected with the output shaft of the first motor; There is a vibration screening device under the grinding chamber.

Preferably, the vibrating screening device includes a support frame, and a screen mesh slidingly connected to it is arranged inside the support frame. One end of the screen mesh is in contact with the cam surface, and the other opposite end is connected to one end of a compression spring, and the other end of the compression spring is It is connected with the inner side of the support frame, and the input end of the cam is connected with the output shaft of the second motor; a material collection bin is arranged under the screen.

Preferably, the screen is of a rectangular trough structure, and a plurality of screen holes are opened on the bottom surface of the screen, and slide rails are provided on the outside of the screen, and the slide rails cooperate with the slide grooves on the inside of the supporting frame.

Preferably, the grinding bin has an ellipsoidal structure as a whole, with an inlet opening at its end, an outlet opening at its middle, and a drawable baffle at the outlet.

Preferably, a discharge hopper is provided at the bottom of the grinding bin, and the discharge hopper is located above the vibration screening device.

Beneficial effects of the utility model: the utility model greatly enhances the grinding efficiency of the concrete material through the rotation of the grinding bin, and through the cooperation between the cam, the screen and the compression spring, the automatic vibration screening process of the screen can be realized, so that after grinding The fineness of the material particles is more in line with the requirements.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram of a kind of concrete material grinding device;

Fig. 2 is the structural representation of vibration screening device in Fig. 1;

Fig. 3 is the structural representation of screen cloth among Fig. 2;

Fig. 4 is the schematic diagram of the three-dimensional structure of the concrete material grinding device after the box body is removed;

In the figure, box body 1, grinding chamber 2, material inlet 2.1, material outlet 2.2, rotating shaft 3, first bevel gear 4, second bevel gear 5, first motor 6, vibration screening device 7, support frame 7.1 , chute 7.1.1, screen 7.2, screen hole 7.2.1, slide rail 7.2.2, cam 7.3, compression spring 7.4, second motor 7.5, material collection bin 7.6, hopper 8.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figures 1 to 4, a concrete material grinding device includes a box body 1, and a rotatable grinding bin 2 is arranged inside the box body 1, and the two ends of the grinding bin 2 are connected to the box body through a rotating shaft 3 1 The bearing connection provided on the side, the rotating shaft 3 at the driving end of the grinding chamber 2 is connected to the first bevel gear 4, the first bevel gear 4 meshes with the second bevel gear 5, and the input end of the second bevel gear 5 is connected to the first motor 6 The output shaft is connected; the vibration screening device 7 is arranged under the grinding chamber 2 .

Preferably, the vibration screening device 7 includes a support frame 7.1, and a screen 7.2 slidingly connected to it is arranged inside the support frame 7.1. One end of the screen 7.2 is in surface contact with the cam 7.3, and the opposite end is in contact with the compression spring 7.4 One end is connected, the other end of the compression spring 7.4 is connected to the inner side of the support frame 7.1, the input end of the cam 7.3 is connected to the output shaft of the second motor 7.5; a material collection bin 7.6 is provided under the screen 7.2.

Preferably, the screen 7.2 is a rectangular tank structure, the bottom surface of which is provided with a plurality of screen holes 7.2.1, the outside of the screen 7.2 is provided with a slide rail 7.2.2, and the slide rail 7.2.2 and the slide inside the support frame 7.1 7.1.1 Groove fit.

Preferably, the grinding bin 2 has an ellipsoidal structure as a whole, with an inlet 2.1 at its end, an outlet 2.2 at its middle, and a drawable baffle at the outlet 2.2.

Preferably, a discharge hopper 8 is provided at the bottom of the grinding bin 2, and the discharge hopper 8 is located above the vibration screening device 7.

The working principle of this embodiment is as follows:

First, the grinding ball and concrete material are added into the grinding chamber 2 through the feed port 2.1, and the first motor 6 drives the second bevel gear 5 to rotate, so that the first bevel gear 4 rotates accordingly, and then the rotating shaft 3 drives The grinding chamber 2 rotates in the box body 1, and the grinding balls and concrete materials rotate continuously in the grinding chamber 2. During the rotation process, the grinding balls grind the concrete materials completely. After the grinding process is completed, open the stopper set at the position of the discharge port 2.2 plate, so that the grinding balls and concrete materials fall into the screen 7.2 of the vibrating screening device 7 together. After the second motor 7.5 works, it drives the cam 7.3 to rotate. Because the side contact between the cam 7.3 and the screen 7.2, and the screen 7.2 is opposite The side is connected with the compression spring 7.4, so when the cam 7.3 rotates, the sieve 7.2 will vibrate back and forth, thereby realizing the vibration screening process; the grinding balls are trapped on the sieve 7.2, and the concrete material conforming to the particle fineness of the corresponding material passes through the sieve The screen 7.2.1 of the net 7.2 then falls into the material collection bin 7.6.

The above-mentioned embodiments are only preferred technical solutions of the present utility model, and should not be regarded as limitations on the present utility model. The embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other if there is no conflict. The scope of protection of the utility model shall be the technical solution described in the claims, including the equivalent replacements of the technical features in the technical solution described in the claims. That is, equivalent replacement and improvement within this scope are also within the protection scope of the present utility model.

Claims (5)

1. A concrete material grinding device, comprising a box (1), characterized in that: the box (1) is provided with a rotatable grinding chamber (2), and the two ends of the grinding chamber (2) pass through The rotating shaft (3) is connected to the bearing provided on the side of the box (1), the rotating shaft (3) at the driving end of the grinding bin (2) is connected to the first bevel gear (4), and the first bevel gear (4) is connected to the second The two bevel gears (5) mesh, and the input end of the second bevel gear (5) is connected to the output shaft of the first motor (6); a vibration screening device (7) is provided under the grinding chamber (2). 2. A concrete material grinding device according to claim 1, characterized in that: the vibrating screening device (7) includes a supporting frame (7.1), and the supporting frame (7.1) is provided with a screen slidingly connected with it A net (7.2), one end of the screen (7.2) is in contact with the surface of the cam (7.3), and the opposite end is connected to one end of the compression spring (7.4), and the other end of the compression spring (7.4) is connected to the inner side of the support frame (7.1), The input end of the cam (7.3) is connected with the output shaft of the second motor (7.5); a material collection bin (7.6) is arranged under the screen (7.2). 3. A concrete material grinding device according to claim 2, characterized in that: the screen (7.2) is a rectangular tank structure, the bottom surface of which is provided with a plurality of screen holes (7.2.1), and the screen (7.2) 7.2) There are slide rails (7.2.2) on the outside, and the slide rails (7.2.2) cooperate with the slide grooves (7.1.1) on the inside of the support frame (7.1). 4. A concrete material grinding device according to claim 1, characterized in that: the grinding chamber (2) is an ellipsoidal structure as a whole, with a feeding port (2.1) at the end, and an outlet at the middle. The position of the material port (2.2) and the material outlet (2.2) is provided with a pullable baffle. 5. A concrete material grinding device according to claim 1, characterized in that: the bottom of the grinding bin (2) is also equipped with a discharge hopper (8), and the discharge hopper (8) is located above the vibration screening device (7) .