A mortar raw material screening device

Abstract

The utility model belongs to mortar production field provides a mortar raw material screening device, mortar raw material screening device includes the chassis, be equipped with a pair of fixed shafts before and after on the chassis, be equipped with a pair of connecting frames left and right rotation on the fixed shaft, all the upper and lower of connecting frame are commonly equipped with upper frame and lower frame, be equipped with screening box in two machine frames, be equipped with screen frame in the screening box, screen mesh is laid on the screen frame, the bottom of screening box is opened and has the discharge gate, and the lateral wall is opened and has the slag removal, be equipped with the rotating arm rotation on the fixed shaft and locate every connecting frame outside. The device makes the screening box do reciprocating motion through the screening motor drive eccentric wheel, improves the screening speed and efficiency of raw material, avoids the accumulation and blockage of raw material on the screen, reduces the number of cleaning downtime, the uniformity and consistency of raw material screening are guaranteed by uniform reciprocating motion, effectively removes the impurity and large particle material, makes the raw material quality after screening more stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of mortar production, and in particular relates to a mortar raw material screening device. Background Technology

[0002] In the construction and related industries, mortar is an indispensable basic material, and its quality directly affects the overall performance and durability of building projects. The sieving process of mortar raw materials is a crucial step in ensuring mortar quality. Sieving effectively removes impurities, large particles, and lumps from the raw materials, ensuring uniform particle size and thus improving the uniformity and stability of the mortar.

[0003] Traditional mortar material screening devices have a relatively simple structure, typically using fixed screens that rely on the mortar material's own gravity or simple vibrating equipment for screening. However, this screening method has many drawbacks. Fixed screens have low screening efficiency, and material accumulates on the screen, easily causing clogging and requiring frequent shutdowns for cleaning, which seriously affects production progress. Utility Model Content

[0004] In view of the above problems, the purpose of this utility model is to provide a mortar raw material screening device, which aims to solve the problem of low screening efficiency of existing mortar raw material screening devices.

[0005] The present invention adopts the following technical solution:

[0006] The mortar raw material screening device includes a base frame with a pair of fixed shafts at the front and rear. A pair of connecting frames are rotatably mounted on the fixed shafts. An upper frame and a lower frame are provided above and below all the connecting frames, respectively. A screening box is provided in the upper and lower frames. A screen frame is provided in the screening box. A screen mesh is laid on the screen frame. A discharge port is opened at the bottom of the screening box and a slag removal port is opened on the side wall. A rotating arm is rotatably mounted on the fixed shaft outside each connecting frame. The upper part of the rotating arm is connected to the connecting frame. A linkage rod is rotatably mounted between the rotating arms on the same side. A screening mechanism is provided on the base frame for pushing the two front rotating arms to rotate simultaneously.

[0007] Furthermore, the screening mechanism includes a rotating shaft rotatably mounted on a base frame, a pair of left and right eccentric wheels on the rotating shaft, a push rod rotatably mounted at the eccentric position of the eccentric wheels, the other end of the push rod being rotatably connected to the front rotating arm on the same side, and a screening motor for driving the rotating shaft to rotate on the base frame.

[0008] Furthermore, the screening box is equipped with a pair of fixed plates, and the fixed plates are equipped with a pair of sliding sleeves. A screw is inserted into the sliding sleeve. A baffle is provided below the pair of screws to block the slag cleaning port. The screw is equipped with a pair of upper and lower limiting nuts, and the sliding sleeve is located between the upper and lower limiting nuts.

[0009] Furthermore, the front and rear ends of the sieve box are recessed inwards to form a clearance cavity corresponding to the fixed shaft.

[0010] Furthermore, a guide frame is provided on the outer wall of the screening box corresponding to the slag removal port.

[0011] The beneficial effects of this utility model are:

[0012] 1. This device uses a sieve motor to drive an eccentric wheel, which makes the sieve box reciprocate, improving the sieve speed and efficiency of the raw materials, avoiding the accumulation and blockage of raw materials on the screen, reducing the number of shutdowns for cleaning, and ensuring the uniformity and consistency of the raw materials during sieve sieving. It effectively removes impurities and large particles, making the quality of the sieved raw materials more stable and reliable.

[0013] 2. The screening box is equipped with a slag removal port and a discharge port, as well as a guide frame, which facilitates the discharge and cleaning of impurities and qualified raw materials, reducing labor intensity and improving production efficiency. Simultaneously, the stacking height of raw materials inside the screening box can be flexibly controlled by adjusting the limit nut. Attached Figure Description

[0014] Figure 1 This utility model provides an integrated mortar raw material screening device. Figure 1 .

[0015] Figure 2 This utility model provides an integrated mortar raw material screening device. Figure 2 .

[0016] Figure 3 This utility model provides an integrated mortar raw material screening device. Figure 3 .

[0017] Figure 4 This utility model provides an installation diagram of the upper and lower frame.

[0018] Figure 5 This utility model is Figure 4 Enlarged view of point A in the middle. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model patent clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0020] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0021] For ease of explanation, only the parts relevant to the embodiments of this utility model are shown.

[0022] Combination Figure 1-5 As shown, the mortar raw material screening device includes a base frame 1, on which a pair of fixed shafts 2 are provided at the front and rear. A pair of connecting frames 3 are rotatably provided on the fixed shafts 2. Above and below all the connecting frames 3, an upper frame 4 and a lower frame 5 are provided respectively. Screening boxes 6 are provided in the upper and lower frames. Screening frames 7 are provided in the screening boxes 6. Screen mesh (not shown in the figure) is laid on the screen frames 7. The bottom of the screening box 6 has a discharge port and the side wall has a slag removal port 8. Rotating arms 9 are rotatably provided on the fixed shafts 2 outside each connecting frame 3. The upper part of the rotating arms 9 is connected to the connecting frame 3. A linkage rod 10 is rotatably provided between the rotating arms 9 on the same side. The base frame 1 is provided with a screening mechanism for pushing the two front rotating arms 9 to rotate simultaneously.

[0023] In the construction and related industries, mortar is an indispensable basic material, and its quality directly affects the overall performance and durability of building projects. Screening of mortar raw materials is a crucial step in ensuring mortar quality. This screening device can effectively remove impurities, large particles, and lumps from the raw materials, ensuring uniform particle size and thus improving the uniformity and stability of the mortar.

[0024] In operation, the mortar material is poured into the screen inside the screening box. The screening mechanism then drives two front rotating arms to reciprocate simultaneously. As the two front rotating arms rotate, the front and rear rotating arms on the same side are connected by a linkage rod. The rotation of the front rotating arms causes the rear rotating arm on the same side to rotate synchronously. This rotation, in turn, causes the connecting frame to rotate, which in turn causes the upper and lower frames and the screening box to sway. During this swaying process, the mortar material is screened on the screen. Fine materials that meet the requirements pass through the screen and are discharged from the outlet, while impurities and large particles remain on the screen.

[0025] As a preferred structure, such as Figure 1 as well as Figure 3 The screening mechanism includes a rotating shaft 11 rotatably mounted on a base frame 1. A pair of eccentric wheels 12 are provided on the rotating shaft 11. A push rod 13 is rotatably provided at the eccentric position of the eccentric wheel 12. The other end of the push rod 13 is rotatably connected to the front rotating arm 9 on the same side. The base frame 1 is also provided with a screening motor 14 for driving the rotating shaft 11 to rotate.

[0026] In the above process, when the screening mechanism is used to drive the two front rotating arms to reciprocate back and forth, the rotating shaft rotates under the drive of the screening motor. The rotating shaft drives the pair of left and right eccentric wheels on it to rotate. When the eccentric wheels rotate, the push rod at the eccentric position moves accordingly. The push rod pushes the front rotating arm on the same side to rotate back and forth.

[0027] Combination Figure 2 The sieve box 6 has recesses at both ends corresponding to the fixed shaft 2, forming clearance cavities 15. When the sieve box shakes, the clearance cavities provide clearance space for the fixed shaft, preventing collisions and interference between the sieve box and the fixed shaft, and ensuring the stable operation of the device.

[0028] In this device, such as Figure 2 The screening box 6 is equipped with a pair of fixed plates 16, and a pair of sliding sleeves 17 are provided on the fixed plates 16. A screw 18 is inserted into the sliding sleeve 17. A baffle 19 is provided below the pair of screws 18 to block the slag cleaning port. A pair of upper and lower limiting nuts 20 are provided on the screw 18, and the sliding sleeve is located between the upper and lower limiting nuts. In addition, a guide frame 21 is provided on the outer wall of the screening box corresponding to the slag cleaning port.

[0029] When slag removal is required, first tighten the two lower limit nuts on the left and right sides. The lower limit nuts move downwards along the screw rod. Then lift the screw rod, which drives the baffle upwards, opening the slag removal port. Next, tighten the two upper limit nuts on the left and right sides, allowing the upper limit nuts to also move downwards along the screw rod to the appropriate position. Then release the screw rod, and the upper limit nuts will contact the sliding sleeve vertically, limiting the screw rod on the sliding sleeve. Impurities and large particles remaining on the screen are discharged from the slag removal port through the guide frame.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mortar raw material screening device, characterized in that: The mortar raw material screening device includes a base frame with a pair of fixed shafts at the front and rear. A pair of connecting frames are rotatably mounted on the fixed shafts. An upper frame and a lower frame are provided above and below all the connecting frames, respectively. A screening box is provided in the upper and lower frames. A screen frame is provided in the screening box. A screen mesh is laid on the screen frame. A discharge port is opened at the bottom of the screening box and a slag removal port is opened on the side wall. A rotating arm is rotatably mounted on the fixed shaft outside each connecting frame. The upper part of the rotating arm is connected to the connecting frame. A linkage rod is rotatably mounted between the rotating arms on the same side. A screening mechanism is provided on the base frame for pushing the two front rotating arms to rotate simultaneously.

2. The mortar raw material screening device as described in claim 1, characterized in that: The screening mechanism includes a rotating shaft rotatably mounted on a base frame. The rotating shaft is provided with a pair of left and right eccentric wheels. A push rod is rotatably provided at the eccentric position of the eccentric wheels. The other end of the push rod is rotatably connected to the front rotating arm on the same side. The base frame is also provided with a screening motor for driving the rotating shaft to rotate.

3. The mortar raw material screening device as described in claim 2, characterized in that: The screening box is equipped with a pair of fixed plates, and the fixed plates are equipped with a pair of sliding sleeves. A screw is inserted into the sliding sleeve. A baffle is provided below the pair of screws to block the slag cleaning port. The screw is equipped with a pair of upper and lower limit nuts, and the sliding sleeve is located between the upper and lower limit nuts.

4. The mortar raw material screening device as described in claim 3, characterized in that: The front and rear ends of the sieve box are recessed inwards to form a clearance cavity corresponding to the fixed shaft.

5. The mortar raw material screening device as described in claim 4, characterized in that: The outer wall of the sieving box is equipped with a guide frame corresponding to the slag removal port.

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