Screening device for water-stable broken stone feeding hopper

Abstract

The utility model discloses a water-stable gravel feeding hopper screening device, which relates to the technical field of gravel screening and comprises a feeding hopper body, a first screen and a second screen, a screening box is arranged in the middle of the feeding hopper body, a large discharge port is arranged on one side of the screening box, a middle discharge port is arranged at the other end of the screening box, and the first screen is arranged in the screening box. Two pairs of first spring pieces are fixedly arranged on the first screen, and the other ends of the first spring pieces are fixedly connected with the top of the screening box. The first screen, the first spring piece, the extension plate, the motor, the disc, the transmission rod, the second screen, the second spring piece and the connecting rod are used in cooperation, when gravel is screened, gravel of different sizes can be separated, through the access door, the handle, the observation window and the protective net, when the gravel is clamped in screen holes, the gravel can be separated from the screen holes, and therefore the gravel screening efficiency is improved. And the access door can be opened, so that people can touch the access door to clean the broken stones in the screen holes.

Description

Technical Field

[0001] The utility model relates to the field of gravel screening, in particular to a screening device for a water-stabilized gravel feeding hopper. Background Art

[0002] In highway construction, stones are indispensable. Usually, the stones used in construction are obtained by crushing stones with a crusher to get gravel of different sizes. Since different materials require stones of different sizes, it is necessary to classify the gravel by size while crushing the stones and stack the gravel of different sizes in different areas.

[0003] The existing feeding hopper screening device can only screen out gravel of one particle size. It needs to replace the screen multiple times for screening to separate the gravel into large, medium, and small sizes, with low efficiency. Moreover, some gravel is likely to get stuck in the screen holes during screening, and the position where the gravel is located can be reached manually, but it cannot be cleaned, which is likely to affect the normal use of the screen for a long time. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies in the prior art and propose a screening device for a water-stabilized gravel feeding hopper.

[0005] To solve the problems existing in the prior art, the utility model adopts the following technical solutions:

[0006] A screening device for a water-stabilized gravel feeding hopper includes a feeding hopper body, a first screen, and a second screen. A screening box is provided in the middle of the feeding hopper body. A large discharge port is opened on one side of the screening box, and a medium discharge port is opened at the other end of the screening box. A first screen is provided in the screening box. Two pairs of first spring pieces are fixedly provided on the first screen, and the other ends of the first spring pieces are fixedly connected to the top of the screening box. One end of the first screen is slidably connected to the large discharge port. An extension plate is fixedly provided at one end of the first screen, and a pair of motors are fixedly provided on the extension plate. Discs are fixedly provided at the outputs of the motors. Transmission rods are rotatably provided on the disc surfaces. A second screen is provided in the screening box. Second spring pieces are fixedly provided on the second screen, and the other ends of the second spring pieces are fixedly connected to the bottom of the first screen. A connecting rod is fixedly provided at one end of the second screen, and the other end of the second screen is slidably connected to the medium discharge port. An extension cover is fixedly provided on one side of the screening box, a lower hanging plate is fixedly provided inside the screening box, and a protective cover is fixedly provided at the other end of the screening box.

[0007] Preferably, a pair of maintenance doors are rotatably provided on one side of the screening box. Handles are fixedly provided on the maintenance doors. Observation windows are provided on the maintenance doors. Protective nets are fixedly provided on the inner sides of the maintenance doors.

[0008] Preferably, the transmission rod is connected to the edge of the disc surface. The first sieve is inclined, and the second sieve is also inclined. The inclination directions of the first sieve and the second sieve are opposite.

[0009] Preferably, the first sieve is located directly above the second sieve, and the first sieve penetrates through the screening box.

[0010] Preferably, the second sieve penetrates through the screening box, and the connection end of the first sieve and the extension plate is located inside the extension cover.

[0011] Preferably, the other end of the first sieve penetrates through the large discharge port, and the connection end of the second sieve and the connecting rod is located inside the protective cover.

[0012] Preferably, the other end of the second sieve penetrates through the medium discharge port, and the mesh holes of the first sieve are larger than those of the second sieve.

[0013] Preferably, a pair of the inspection doors are symmetrically arranged, and the protective net corresponds to the position of the observation window.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, through the combined use of the first sieve, the first spring piece, the extension plate, the motor, the disc, the transmission rod, the second sieve, the second spring piece, and the connecting rod, different sizes of crushed stones can be separated during the screening of crushed stones, improving the use efficiency of the device;

[0016] 2. In the present utility model, through the combined use of the inspection door, the handle, the observation window, and the protective door, when crushed stones are stuck in the sieve holes, the inspection door can be opened to enable manual access to clean the crushed stones in the sieve holes, reducing the impact of sieve hole blockage on the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present utility model and constitute a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0018] Figure 1 is the front view structural schematic diagram of the present utility model;

[0019] Figure 2 is the sectional view structural schematic diagram of the extension cover of the present utility model;

[0020] Figure 3 is the schematic diagram of the positional relationship between the large discharge port and the protective cover of the present utility model;

[0021] Figure 4Schematic diagram of the positional relationship between the transmission rod and the connecting rod of the present utility model;

[0022] Reference numerals in the figure: 1. Hopper body; 11. Screening box; 12. Medium discharge port; 13. Large discharge port; 14. First screen; 15. First spring piece; 16. Extension plate; 17. Motor; 18. Disc; 19. Transmission rod; 111. Second screen; 112. Second spring piece; 113. Connecting rod; 114. Extension cover; 115. Lower hanging plate; 116. Protective cover; 2. Maintenance door; 21. Handle; 22. Observation window; 23. Protective net. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Embodiment 1: This embodiment provides a water-stabilized macadam hopper screening device. Refer to Figures 1-4 , specifically, it includes a hopper body 1, a first screen 14, and a second screen 111. A screening box 11 is provided in the middle of the hopper body 1. A large discharge port 13 is opened on one side of the screening box 11, and a medium discharge port 12 is opened at the other end of the screening box 11. A first screen 14 is provided in the screening box 11. Two pairs of first spring pieces 15 are fixedly provided on the first screen 14, and the other ends of the first spring pieces 15 are fixedly connected to the top of the screening box 11. One end of the first screen 14 is slidably connected to the large discharge port 13. An extension plate 16 is fixedly provided at one end of the first screen 14. A pair of motors 17 are fixedly provided on the extension plate 16. The output of the motor 17 is fixedly provided with a disc 18. Transmission rods 19 are rotatably provided on the surfaces of the discs 18. A second screen 111 is provided in the screening box 11. Second spring pieces 112 are fixedly provided on the second screen 111, and the other ends of the second spring pieces 112 are fixedly connected to the bottom of the first screen 14. A connecting rod 113 is fixedly provided at one end of the second screen 111, and the other end of the second screen 111 is slidably connected to the medium discharge port 12. An extension cover 114 is fixedly provided on one side of the screening box 11, a lower hanging plate 115 is fixedly provided in the screening box 11, and a protective cover 116 is fixedly provided at the other end of the screening box 11;

[0025] The transmission rod 19 is connected to the surface edge of the disc 18. The first screen 14 is inclined, and the second screen 111 is also inclined. The inclination directions of the first screen 14 and the second screen 111 are opposite. The first screen 14 is located directly above the second screen 111. The first screen 14 penetrates through the screening box 11, and the second screen 111 penetrates through the screening box 11. The connection end of the first screen 14 and the extension plate 16 is located within the extension cover 114, and the other end of the first screen 14 penetrates through the large discharge port 13. The connection end of the second screen 111 and the connecting rod 113 is located within the protective cover 116, and the other end of the second screen 111 penetrates through the medium discharge port 12. The mesh holes of the first screen 14 are larger than those of the second screen 111.

[0026] In the specific implementation process, as Figure 3 and Figure 4 shown, the crushed stones are put in through the top of the feeding hopper body 1 and fall onto the first screen 14 inside the screening box 11. The motor 17 drives the disc 18 to rotate, and the disc 18 drives the connecting rod 113 to move left and right through the transmission rod 19. Due to the certain flexibility of the first spring piece 15 and the second spring piece 112, the transmission rod 19 drives the second screen 111 to vibrate through the connecting rod 113. The second screen 111 drives the first screen 14 to vibrate through the second spring piece 112 and the first spring piece 15. The first screen 14 drives the crushed stones to vibrate on the first screen 14. The small and medium-sized crushed stones fall onto the second screen 111 through the mesh holes of the first screen 14. The large crushed stones are discharged through the large discharge port 13 after vibration and the inclination of the first screen 14. The second screen 111 vibrates, and the small crushed stones are discharged from the bottom of the feeding hopper body 1 through the mesh holes of the second screen 111. The medium-sized crushed stones that do not pass through the mesh holes of the second screen 111 are discharged through the medium discharge port 12 after the vibration and inclination of the second screen 111, completing the screening of the crushed stones. Through the combined use of the first screen 14, the first spring piece 15, the extension plate 16, the motor 17, the disc 18, the transmission rod 19, the second screen 111, the second spring piece 112, and the connecting rod 113, crushed stones of different sizes can be separated during the screening of crushed stones.

[0027] Embodiment 2: In Embodiment 1, there is still a problem that some crushed stones are likely to get stuck in the screen holes during screening. Therefore, on the basis of Embodiment 1, this embodiment further includes:

[0028] A pair of maintenance doors 2 are rotatably provided on one side of the screening box 11. Handles 21 are fixedly provided on the maintenance doors 2. Observation windows 22 are provided on the maintenance doors 2. Protective nets 23 are fixedly provided on the inner sides of the maintenance doors 2. The pair of maintenance doors 2 are symmetrically arranged, and the positions of the protective nets 23 correspond to those of the observation windows 22.

[0029] In the specific implementation process, as Figure 1 and Figure 2As shown, by observing the working state of the first screen 14 and the second screen 111 through the observation window 22, the protective net 23 can prevent the crushed stones from protecting the observation window 22. When the crushed stones are stuck in the screen holes during screening, the stopping device opens the maintenance door 2 through the handle 21, making it more convenient to take out the crushed stones from the screen holes. Through the combined use of the maintenance door 2, the handle 21, the observation window 22 and the protective net 23, when there are crushed stones stuck in the screen holes, the maintenance door 2 can be opened to enable manual access to clean the crushed stones in the screen holes.

[0030] Specifically, the working principle and operation method of the present utility model are as follows:

[0031] Step 1: Put the crushed stones through the top of the feeding hopper body 1 and let them fall onto the first screen 14 in the screening box 11. Start the motor 17, and the motor 17 drives the disc 18 to rotate. The disc 18 drives the connecting rod 113 to move left and right through the transmission rod 19. Since the first spring piece 15 and the second spring piece 112 have a certain degree of flexibility, the transmission rod 19 drives the second screen 111 to vibrate through the connecting rod 113. The second screen 111 drives the first screen 14 to vibrate through the second spring piece 112 and the first spring piece 15. The first screen 14 drives the crushed stones to vibrate on the first screen 14. The small and medium-sized crushed stones fall onto the second screen 111 through the mesh holes of the first screen 14. The large crushed stones are discharged from the large discharge port 13 after vibration and the inclination of the first screen 14. The second screen 111 vibrates, and the small crushed stones are discharged from the bottom of the feeding hopper body 1 through the mesh holes of the second screen 111. The medium-sized crushed stones that do not pass through the mesh holes of the second screen 111 are discharged from the middle discharge port 12 after the vibration and inclination of the second screen 111, completing the screening of the crushed stones.

[0032] Step 2: Observe the working state of the first screen 14 and the second screen 111 through the observation window 22. The protective net 23 can prevent the crushed stones from protecting the observation window 22. When the crushed stones are stuck in the screen holes during screening, the stopping device opens the maintenance door 2 through the handle 21, making it more convenient to take out the crushed stones from the screen holes, thereby reducing the impact on the device.

[0033] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and should be covered by the protection scope of the present utility model.

Claims

1. A screening device for a water-stabilized macadam feeding hopper, comprising a feeding hopper body (1), a first screen (14), and a second screen (111), characterized in that: In the middle of the feeding hopper body (1), there is a screening box (11). On one side of the screening box (11), there is a large discharge port (13). At the other end of the screening box (11), there is a medium discharge port (12). Inside the screening box (11), there is a first screen (14). On the first screen (14), there are two pairs of first spring pieces (15) fixed. The other ends of the first spring pieces (15) are fixedly connected to the top of the screening box (11). One end of the first screen (14) is slidably connected to the large discharge port (13). One end of the first screen (14) is fixedly provided with an extension plate (16). On the extension plate (16), there is a pair of motors (17) fixed. The output of the motor (17) is fixedly provided with a disc (18). On the surface of the disc (18), there are transmission rods (19) rotatably arranged. Inside the screening box (11), there is a second screen (111). On the second screen (111), there are second spring pieces (112) fixed. The other ends of the second spring pieces (112) are fixedly connected to the bottom of the first screen (14). One end of the second screen (111) is fixedly provided with a connecting rod (113). The other end of the second screen (111) is slidably connected to the medium discharge port (12). On one side of the screening box (11), there is an extension cover (114) fixed. Inside the screening box (11), there is a lower hanging plate (115) fixed. At the other end of the screening box (11), there is a protective cover (116) fixed.

2. The screening device for the water-stabilized macadam feeding hopper according to claim 1, characterized in that: On one side of the screening box (11), there are a pair of inspection doors (2) rotatably arranged. On the inspection doors (2), there are handles (21) fixed. On the inspection doors (2), there are observation windows (22) provided. Inside the inspection doors (2), there are protective nets (23) fixed.

3. The screening device for the water-stabilized macadam feeding hopper according to claim 1, wherein: The transmission rod (19) is connected to the edge of the surface of the disc (18). The first screen (14) is inclined. The second screen (111) is also inclined. The inclination directions of the first screen (14) and the second screen (111) are opposite.

4. A water-stabilized macadam feeding hopper screening device according to claim 1, characterized in that: The first screen (14) is located directly above the second screen (111). The first screen (14) penetrates through the screening box (11).

5. The screening device for the water-stabilized macadam feeding hopper according to claim 1, wherein: The second screen (111) penetrates through the screening box (11). The connection end of the first screen (14) and the extension plate (16) is located inside the extension cover (114).

6. The screening device for the water-stabilized macadam feeding hopper according to claim 1, characterized in that: The other end of the first screen (14) penetrates through the large discharge port (13). The connection end of the second screen (111) and the connecting rod (113) is located inside the protective cover (116).

7. A water-stabilized macadam feeding hopper screening device according to claim 1, characterized in that: The other end of the second screen (111) penetrates through the medium discharge port (12). The mesh holes of the first screen (14) are larger than those of the second screen (111).

8. The screening device for the water-stabilized macadam feeding hopper according to claim 2, characterized in that: The pair of inspection doors (2) are symmetrically arranged. The positions of the protective nets (23) and the observation windows (22) correspond to each other.

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