Electric grading screening device for stones for concrete

Abstract

The utility model discloses an electric stone grading screening device for concrete, and particularly relates to the technical field of stone screening, the electric stone grading screening device comprises a screening box, a feeding hopper and a vibration motor, the feeding hopper is connected to one side of the outer surface wall of the screening box, and the vibration motor is installed on the outer surface wall of the screening box and located at the lower end of the feeding hopper; a screening plate is installed in the screening box, a dustproof structure is arranged on the screening box, and a supporting bottom frame is installed at the lower end of the outer portion of the screening box. By arranging the dustproof structure, a dustproof effect is achieved when stones are screened, the problem that dust is raised along with vibration in the vibration screening process due to the fact that an existing screening box is in an opening shape is solved, the situation that a large amount of dust is generated in the screening process is avoided, and therefore the screening environment is ensured, and the screening efficiency is improved. And the defect that flying dust freely drifts away along with air flow, so that the operator inhales the dust into the body is overcome, and the health of the operator is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of stone screening, in particular to an electric stone grading and screening device for concrete. Background Art

[0002] Electric grading screening device, also known as vibrating screening machine, is widely used in mining, building materials, coal preparation, energy, chemical and other industries. It uses the exciting force generated by the vibrating motor to make the screen body vibrate periodically along the exciting force direction. The material jumps in a circle on the screen surface, and the materials of different specifications are graded and screened through different screen holes to achieve the purpose of grading. Therefore, during the construction process, it is necessary to use a screening device to screen and grade the stones. The quality of the concrete stone particle size gradation will affect the configuration strength grade and various construction performances of the concrete.

[0003] Application No. 201720319509.1 discloses an electric grading and screening device for gravel for concrete. "The structure includes a built-in silencer, a first screen box, a connecting pipe, screen legs, a motor, a second screen box, a support block, a shock-absorbing spring, a discharge port, a support block, and a feed port. The first screen box is provided with a feed port." The above-mentioned feed port is opened on the upper end face of the screen box, so that the upper end of the screen box is open. Dust is mixed in the gravel pile. During the vibration screening process, the dust will be raised with the vibration of the screen box. A large amount of dust will be generated during the screening process, resulting in a poor screening environment. The raised dust will float away at will with the flow of air, and then the operator will inhale the dust into the body, affecting the health of the operator. Utility Model Content

[0004] The purpose of the utility model is to provide an electric grading and screening device for gravel used in concrete, so as to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric grading and screening device for concrete gravel, comprising:

[0006] A screening box, a feeding hopper and a vibration motor, wherein the feeding hopper is connected to one side of the outer wall of the screening box, the vibration motor is installed on the outer wall of the screening box and is located at the lower end of the feeding hopper, a screening plate is installed inside the screening box, a dustproof structure is provided on the screening box, a support base is installed at the lower end of the outer side of the screening box, and a discharge pipe is connected to the lower end surface of the screening box;

[0007] The dust-proof structure includes a dust cover, a dust hopper, a dust suction pipe, a horizontal pipe, a first connecting plate, a second connecting plate, an electric telescopic rod, an insertion rod and a slot. The dust cover is connected to the upper end surface of the screening box, the dust hopper is connected to the inner surface wall of the dust cover, the dust suction pipe is connected to the upper end surface of the dust hopper, and the outlet end of the dust suction pipe passes through and extends to the upper end of the dust cover. The horizontal pipe is arranged at the upper end of the dust cover and is connected to the outlet end of the dust suction pipe.

[0008] Preferably, the first connecting plate is connected to the outer wall of the dust cover, the second connecting plate is connected to the other side of the outer wall of the screening box, the electric telescopic rod is installed on the upper end surface of the second connecting plate, and the free end of the electric telescopic rod is connected to the first connecting plate.

[0009] Preferably, the insertion rod is connected to the corner of the lower end surface of the dust cover, and the slot is opened at the corner of the upper end surface of the screening box.

[0010] Preferably, a stirring structure is provided inside the screening box, and the stirring structure includes a driving motor, a connecting rod and a push plate.

[0011] Preferably, the driving motor is mounted on the upper end surface of the dust cover, the connecting rod is connected to the output end of the driving motor, and the push plate is mounted on the outer surface wall of the connecting rod.

[0012] Preferably, three installation cavities are provided on the screening plate, mesh plates are connected to the interiors of the three installation cavities, and the holes of the three mesh plates are of different sizes.

[0013] Preferably, a receiving box is embedded in the interior of the screening box and at the lower end of the screening plate, and the outer wall of the receiving box is symmetrically connected with two embedded blocks, the front wall of the screening box is provided with an embedding groove that matches the embedding block, and the bottom of the receiving box is provided with a through hole that is the same as the holes of the corresponding mesh plate, so that the stones of the specifications screened can fall down and be discharged through the discharge pipe. During screening, the stones to be screened are first poured into the screening box through the feeding hopper, and then the vibration motor is turned on, and the vibration generated by the operation of the vibration motor drives the screening box to vibrate, so that the stones jump on the screening plate, and then the three mesh plates with different apertures are used to realize the screening operation of the stones, and the stones matching the holes fall into the receiving cavity, and finally the materials are unloaded by the discharge pipe. In addition, the lower ends of the middle mesh plate and the mesh plate with large holes are plugged with a receiving box, which can receive stones smaller than the holes of the corresponding mesh plate to ensure the screening effect.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. By setting up a dust-proof structure, the screening device has a dust-proof function, which can play a dust-proof role when screening stones. It solves the problem that the existing screening box is open, causing dust to be raised with vibration during the vibration screening process, avoiding the situation where a large amount of dust is generated during the screening process, thereby ensuring the screening environment and preventing the raised dust from floating freely with the air flow and causing the operator to inhale the dust into the body, thereby not affecting the health of the operator. In addition, during the screening process, the dust in the box can be sucked out in time, which can effectively reduce the amount of dust in the screening box and prevent the dust from being scattered through the slot of the feeding hopper;

[0016] 2. By setting up a stirring structure, the dust-proof structure has the function of stirring the stones. During screening, it can stir and push the stones accumulated in the screening box to prevent large stones from being stuck in holes with small apertures and causing blockage of small holes. It avoids the disadvantages of affecting the stone screening effect and progress due to excessive blockage of small holes, ensures the smoothness of stone screening, reduces the chance of blockage, and ensures the screening progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a cutaway schematic diagram of the present utility model;

[0020] Figure 3 This is a schematic diagram of a screening plate of the present invention;

[0021] Figure 4 This is a schematic diagram of the separation of the dust cover and the screening box of the present invention;

[0022] Figure 5 This is a schematic diagram of the connection between the stirring structure and the dust cover of the utility model.

[0023] Description of reference numerals:

[0024] 1. Screening box; 2. Feeding hopper; 3. Vibrating motor; 4. Screening plate; 5. Dustproof structure; 51. Dust cover; 52. Dust hopper; 53. Dust suction pipe; 54. Horizontal pipe; 511. First connecting plate; 512. Second connecting plate; 513. Electric telescopic rod; 514. Insert rod; 515. Slot; 6. Receiving box; 7. Agitation structure; 71. Driving motor; 72. Connecting rod; 73. Push plate; 8. Support frame; 9. Discharge pipe. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The utility model provides Figure 1 and Figure 2 The electric grading and screening device for concrete gravel shown in the figure comprises:

[0027] A screening box 1, a feeding hopper 2 and a vibration motor 3, the feeding hopper 2 is connected to one side of the outer wall of the screening box 1, the vibration motor 3 is installed on the outer wall of the screening box 1 and is located at the lower end of the feeding hopper 2, a screening plate 4 is installed inside the screening box 1, a supporting base frame 8 is installed at the lower end of the outside of the screening box 1, and the lower end surface of the screening box 1 is connected to a discharge pipe 9.

[0028] Further, see Figure 3 As shown, three installation cavities are opened on the screening plate 4, and mesh plates are connected to the interior of the three installation cavities. The holes of the three mesh plates are of different sizes.

[0029] Further, see Figure 1 and Figure 3 As shown, a receiving box 6 is embedded inside the screening box 1 and at the lower end of the screening plate 4. Two embedded blocks are symmetrically connected to the outer wall of the receiving box 6. The front wall of the screening box 1 is provided with an embedding groove adapted to the embedded block. The bottom of the receiving box 6 is provided with a through hole (not shown) that is the same as the corresponding mesh plate hole, so that the screened standard stones can fall and be discharged through the discharge pipe 9.

[0030] Specifically, during screening, the stones to be screened are first poured into the screening box 1 through the feeding hopper 2, and then the vibration motor 3 is turned on. The vibration generated by the operation of the vibration motor 3 drives the screening box 1 to vibrate, so that the stones jump on the screening plate 4, and then the three mesh plates with different apertures are used to realize the screening operation of the stones. The stones matching the holes fall into the receiving cavity, and finally the discharge pipe 9 completes the unloading. In addition, the lower end of the middle mesh plate and the mesh plate with large holes is connected with a receiving box 6, which can receive stones smaller than the holes of the corresponding mesh plate to ensure the screening effect.

[0031] The utility model provides Figure 2 and Figure 4 The shown device is an electric grading and screening device for gravel for concrete, and a dustproof structure 5 is provided on the screening box 1. The dustproof structure 5 includes a dustproof cover 51, a dust suction hopper 52, a dust suction pipe 53, a transverse pipe 54, a first connecting plate 511, a second connecting plate 512, an electric telescopic rod 513, an insertion rod 514 and a slot 515. The dustproof cover 51 is connected to the upper end surface of the screening box 1, the dust suction hopper 52 is connected to the inner surface wall of the dustproof cover 51, the dust suction pipe 53 is connected to the upper end surface of the dust suction hopper 52, and the outlet end of the dust suction pipe 53 passes through and extends to the upper end of the dustproof cover 51, and the transverse pipe 54 is provided at the upper end of the dustproof cover 51 and is connected to the outlet end of the dust suction pipe 53.

[0032] The first connecting plate 511 is connected to the outer wall of the dust cover 51, the second connecting plate 512 is connected to the other side of the outer wall of the screening box 1, the electric telescopic rod 513 is installed on the upper end surface of the second connecting plate 512, and the free end of the electric telescopic rod 513 is connected to the first connecting plate 511.

[0033] The insertion rod 514 is connected to the corner of the lower end surface of the dust cover 51 , and the slot 515 is opened at the corner of the upper end surface of the screening box 1 .

[0034] Through the above technical solution:

[0035] When screening stones, the dust cover 51 is arranged at the opening of the screening box 1, which can play a role in dust prevention during screening, solving the problem that the existing screening box 1 is open and causes dust to be raised with vibration during the vibration screening process, avoiding the situation where a large amount of dust is generated during the screening process, thereby ensuring the screening environment, and preventing the raised dust from floating freely with the flow of air and causing the operator to inhale the dust into the body, thereby not affecting the health of the operator. In addition, one side of the horizontal pipe 54 is The end is connected to the dust suction fan, and the suction force generated can draw the dust in the screening box 1 out of the screening box 1 through the dust suction hopper 52 and the dust suction pipe 53, which can effectively reduce the amount of dust in the screening box 1 and prevent the dust from being dispersed through the through slot of the feeding hopper 2. In addition, when cleaning the screening box 1, the electric telescopic rod 513 extends to push the first connecting plate 511 upward, so that the dust cover 51 moves up with the first connecting plate 511. At the same time, the insertion rod 514 moves out of the slot 515, and the screening box 1 can be opened, which is convenient for cleaning the screening box 1.

[0036] The utility model provides Figure 5 In the electric grading and screening device for concrete gravel shown, a stirring structure 7 is provided inside the screening box 1 , and the stirring structure 7 includes a driving motor 71 , a connecting rod 72 and a push plate 73 .

[0037] The driving motor 71 is mounted on the upper end surface of the dust cover 51 , the connecting rod 72 is connected to the output end of the driving motor 71 , and the push plate 73 is mounted on the outer wall of the connecting rod 72 .

[0038] Through the above technical solution:

[0039] During screening, the drive motor 71 is turned on, and the connecting rod 72 is driven to rotate by the drive motor 71. At the same time, the push plate 73 rotates with the rotation of the connecting rod 72. The rotation of the push plate 73 can stir and push the stones accumulated in the screening box 1, preventing large stones from being stuck in holes with small apertures and causing blockage of small holes, avoiding the disadvantage of affecting the stone screening effect and progress due to excessive blockage of small holes, ensuring the smoothness of stone screening, reducing the probability of blockage, and ensuring the screening progress.

[0040] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An electric grading and screening device for concrete gravel, characterized in that: include: A screening box (1), a feeding hopper (2) and a vibration motor (3), wherein the feeding hopper (2) is connected to one side of the outer wall of the screening box (1), the vibration motor (3) is installed on the outer wall of the screening box (1) and is located at the lower end of the feeding hopper (2), a screening plate (4) is installed inside the screening box (1), a dustproof structure (5) is provided on the screening box (1), a supporting base frame (8) is installed at the lower end of the outer side of the screening box (1), and a discharge pipe (9) is connected to the lower end surface of the screening box (1); The dustproof structure (5) comprises a dustproof cover (51), a dust suction hopper (52), a dust suction pipe (53), a transverse pipe (54), a first connecting plate (511), a second connecting plate (512), an electric telescopic rod (513), an inserting rod (514) and a slot (515); the dustproof cover (51) is connected to the upper end surface of the screening box (1); the dust suction hopper (52) is connected to the inner surface wall of the dustproof cover (51); the dust suction pipe (53) is connected to the upper end surface of the dust suction hopper (52); the outlet end of the dust suction pipe (53) passes through and extends to the upper end of the dustproof cover (51); the transverse pipe (54) is provided at the upper end of the dustproof cover (51) and is connected to the outlet end of the dust suction pipe (53).

2. The electric grading and screening device for concrete gravel according to claim 1, characterized in that: The first connecting plate (511) is connected to the outer wall of the dust cover (51), the second connecting plate (512) is connected to the other side of the outer wall of the screening box (1), the electric telescopic rod (513) is installed on the upper end surface of the second connecting plate (512), and the free end of the electric telescopic rod (513) is connected to the first connecting plate (511).

3. The electric grading and screening device for concrete gravel according to claim 1, characterized in that: The insertion rod (514) is connected to the corner of the lower end surface of the dust cover (51), and the slot (515) is opened at the corner of the upper end surface of the screening box (1).

4. The electric grading and screening device for concrete gravel according to claim 1, characterized in that: A stirring structure (7) is provided inside the screening box (1), and the stirring structure (7) comprises a driving motor (71), a connecting rod (72) and a push plate (73).

5. The electric grading and screening device for concrete gravel according to claim 4, characterized in that: The driving motor (71) is mounted on the upper end surface of the dust cover (51), the connecting rod (72) is connected to the output end of the driving motor (71), and the pushing plate (73) is mounted on the outer surface wall of the connecting rod (72).

6. The electric grading and screening device for concrete gravel according to claim 1, characterized in that: The screening plate (4) is provided with three installation cavities, and mesh plates are connected inside the three installation cavities.

7. The electric grading and screening device for concrete gravel according to claim 1, characterized in that: A material receiving box (6) is embedded inside the screening box (1) and at the lower end of the screening plate (4). The outer wall of the material receiving box (6) is symmetrically connected to two embedded blocks, and the front wall of the screening box (1) is provided with an embedded groove adapted to the embedded blocks.

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