A material feeding device for sand and gravel silo

Abstract

The utility model discloses a material discharge device for a sand and gravel silo, comprising a material discharge box, the bottom of which is connected in sequence with a material discharge hopper and a material discharge pipe, a screening net is slidably arranged inside the material discharge box, elastic parts connected to the screening net are arranged on both sides of the inner wall of the material discharge box, a discharge box is connected to one side of the material discharge box, an extension plate is arranged on one side of the material discharge box, a driving motor is arranged at the bottom of the extension plate, a vertical rod is rotatably installed inside the material discharge box, the vertical rod is transmission-connected with a first rotating rod, connecting rods are arranged on both sides of the vertical rod, a scraper is arranged at one end of the connecting rod, and the scraper contacts the inner wall of the material discharge hopper. Through the above arrangement, the utility model makes the screening net vibrate vertically, which can speed up the screening speed of the screening net for sand and gravel, and avoid some stones with larger particles covering the top of the screening net and affecting the subsequent screening work of the screening net for sand and gravel.

Description

Technical Field

[0001] The utility model relates to a material unloading device for a sand and gravel bin. Background Art

[0002] The gravel silo is a storage silo for storing gravel. When the sand and gravel in the gravel silo are needed for concrete mixing, a feeding device is needed to feed the gravel silo.

[0003] Most of the existing feeding devices do not have a screening structure, and cannot screen the larger stones mixed in the sand and gravel, so that the larger stones are mixed into the concrete mixer, thereby affecting the quality of the concrete mixture, which has certain limitations.

[0004] Therefore, it is necessary to provide a material unloading device for a sand and gravel silo to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a material unloading device for a sand and gravel silo to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A material unloading device for a sand and gravel silo comprises a material unloading box, the bottom of which is connected to a material unloading hopper and a material unloading pipe in sequence, a screening net is slidably arranged inside the material unloading box, elastic parts connected to the screening net are arranged on both sides of the inner wall of the material unloading box, one side of the material unloading box is connected to a discharge box, an extension plate is arranged on one side of the material unloading box, a driving motor is arranged at the bottom of the extension plate, the output shaft of the driving motor is connected to a first rotating rod, one end of the first rotating rod passes through the material unloading box and is connected to a cam, a vertical rod is rotatably installed inside the material unloading box, the vertical rod is transmission-connected to the first rotating rod, connecting rods are arranged on both sides of the vertical rod, a scraper is arranged at one end of the connecting rod, and the scraper contacts the inner wall of the material unloading hopper.

[0008] Preferably, the elastic member includes a sleeve, an inner rod, a first spring and a connecting block, the sleeve is slidably connected to the inner rod, the first spring is arranged inside the sleeve and connected to the top of the inner rod, the connecting block is arranged at the bottom of the inner rod, and one end of the connecting block is connected to the inner wall of the discharge box.

[0009] Preferably, cross bars are provided on both sides of the inner wall of the discharge box, a fixing ring is provided between the two cross bars, and the vertical bar is rotatably installed in the fixing ring.

[0010] Preferably, a second rotating rod is rotatably installed on one side of the discharge box, one end of the second rotating rod is connected to the first bevel gear, a second bevel gear is arranged on the top of the vertical rod, the second bevel gear is meshingly connected with the first bevel gear, and the outer walls of one end of the first rotating rod and the second rotating rod are fixedly sleeved with pulleys, a belt is arranged between the two pulleys, and the two pulleys are connected through the belt transmission.

[0011] Preferably, a protection box is provided on the inner wall of the discharge box, and the second rotating rod, the first bevel gear and the second bevel gear are all located inside the protection box.

[0012] Preferably, a baffle is slidably penetrated inside the discharge box, a pull plate is provided at the front end of the baffle, and a second spring is provided at the rear end of the pull plate and the front end of the discharge box.

[0013] Preferably, a control valve is provided on the discharge pipe.

[0014] Preferably, legs are provided on four sides of the bottom of the lower hopper.

[0015] The beneficial effect of the utility model is that the discharge box is placed in the discharge port at the bottom of the sand and gravel bin, and the sand and gravel in the sand and gravel bin falls into the screening net, and the sand and gravel that meets a certain volume condition passes through the screening net and falls into the discharge hopper, and can finally be discharged through the discharge pipe, while the larger stones remain on the top of the screening net, and through the inclination of the screening net, the larger stones slide to the discharge box, and the screening net is driven by the motor, the first rotating rod, the second rotating rod, the cam and the elastic member to make the screening net vibrate vertically, which can speed up the screening speed of the screening net for sand and gravel, and avoid that some larger stones cover the top of the screening net and affect the subsequent screening of sand and gravel by the screening net. The rotation of the second rotating rod drives the connecting rods on both sides and the scraper at one end thereof to rotate, and the scraper contacts with the lower hopper, and can scrape and clean the inner wall of the lower hopper, so as to avoid that the sand and soil mixed in the sand and gravel adhere to the inner wall of the lower hopper and affect the discharge process of the sand and gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below, but this does not limit the protection scope of the utility model.

[0017] Figure 1 A front cross-sectional view of the entirety of the utility model;

[0018] Figure 2 The internal structure diagram of the material discharge box and the material discharge hopper provided by the utility model;

[0019] Figure 3 The utility model provides Figure 2 A cross-sectional view of the elastic member;

[0020] Figure 4 The utility model provides Figure 2 Side view of the middle cam;

[0021] Figure 5 A top view of the feed box provided by the utility model;

[0022] Figure 6 The utility model is provided for the overall front view.

[0023] Among them, 1. discharge box; 2. discharge hopper; 3. discharge pipe; 4. screening net; 5. elastic part; 51. sleeve; 52. inner rod; 53. first spring; 54. connecting block; 6. discharge box; 7. extension plate; 8. drive motor; 9. first rotating rod; 10. cam; 11. vertical rod; 12. connecting rod; 13. scraper; 14. cross rod; 15. fixing ring; 16. second rotating rod; 17. first bevel gear; 18. second bevel gear; 19. pulley; 20. belt; 21. protective box; 22. baffle; 23. pull plate; 24. second spring; 25. control valve; 26. support leg. DETAILED DESCRIPTION

[0024] See also Figures 1 to 6 The shown material unloading device for a sand and gravel silo comprises a unloading box 1, the bottom of which is connected in sequence with a unloading hopper 2 and a unloading pipe 3, a screening net 4 is slidingly arranged inside the unloading box 1, elastic parts 5 connected to the screening net 4 are arranged on both sides of the inner wall of the unloading box 1, a discharge box 6 is connected to one side of the unloading box 1, an extension plate 7 is arranged on one side of the unloading box 1, a driving motor 8 is arranged at the bottom of the extension plate 7, the output shaft of the driving motor 8 is connected to a first rotating rod 9, one end of the first rotating rod 9 passes through the unloading box 1 and is connected to a cam 10, a vertical rod 11 is rotatably installed inside the unloading box 1, the vertical rod 11 is transmission-connected to the first rotating rod 9, connecting rods 12 are arranged on both sides of the vertical rod 11, a scraper 13 is arranged at one end of the connecting rod 12, and the scraper 13 contacts the inner wall of the unloading hopper 2.

[0025] Furthermore, the elastic member 5 includes a sleeve 51, an inner rod 52, a first spring 53 and a connecting block 54. The sleeve 51 is slidably sleeved on the inner rod 52. The first spring 53 is arranged inside the sleeve 51 and connected to the top of the inner rod 52. The connecting block 54 is arranged at the bottom of the inner rod 52. One end of the connecting block 54 is connected to the inner wall of the discharge box 1.

[0026] Through the arrangement of the sleeve 51, the inner rod 52, the first spring 53 and the connecting block 54, when the cam 10 rotates to 180 degrees, the screening net 4 is driven to move downward. At this time, the elastic member 5 is compressed. With the continued rotation of the cam 10 and the reaction force of the elastic member 5 after compression, the screening net 4 is driven to vibrate vertically back and forth.

[0027] Furthermore, cross bars 14 are provided on both sides of the inner wall of the material box 1 , a fixing ring 15 is provided between the two cross bars 14 , and the vertical rod 11 is rotatably installed in the fixing ring 15 .

[0028] By arranging the cross bar 14 and the fixing ring 15 , the vertical bar 11 can be stably rotated in the unloading box 1 .

[0029] Furthermore, a second rotating rod 16 is rotatably installed on one side of the discharge box 1, and one end of the second rotating rod 16 is connected to a first bevel gear 17. A second bevel gear 18 is arranged on the top of the vertical rod 11, and the second bevel gear 18 is meshingly connected with the first bevel gear 17. The outer walls of one end of the first rotating rod 9 and the second rotating rod 16 are fixedly sleeved with a pulley 19, and a belt 20 is arranged between the two pulleys 19, and the two pulleys 19 are connected through the belt 20.

[0030] The first bevel gear 17 , the second bevel gear 18 , the two pulleys 19 and the belt 20 are arranged to realize the synchronous rotation process of the vertical rod 11 and the first rotating rod 9 .

[0031] Furthermore, a protection box 21 is provided on the inner wall of the blanking box 1 , and the second rotating rod 16 , the first bevel gear 17 and the second bevel gear 18 are all located inside the protection box 21 .

[0032] The protection box 21 is used to protect the second rotating rod 16 , the first bevel gear 17 and the second bevel gear 18 .

[0033] Furthermore, a baffle 22 is slidably penetrated inside the discharge box 6 , a pull plate 23 is provided at the front end of the baffle 22 , and a second spring 24 is provided at the rear end of the pull plate 23 and the front end of the discharge box 6 .

[0034] Sand and gravel that meet certain volume conditions fall into the lower hopper 2 through the screening net 4, while larger stones remain on the top of the screening net 4 and are tilted so that the larger stones slide to the discharge box 6 and are located on one side of the baffle 22. At this time, the pull plate 23 is pulled forward so that the baffle 22 moves forward accordingly. At this time, the larger stones on one side of the baffle 22 can be discharged into the discharge box 6, and thus can be discharged from the device through the discharge box 6.

[0035] Furthermore, a control valve 25 is provided on the feed pipe 3 .

[0036] The control valve 25 is used to control the opening or closing state of the feed pipe 3 .

[0037] Furthermore, legs 26 are provided on four sides of the bottom of the lower hopper 2 .

[0038] The lower hopper 2 is supported by four legs 26 .

[0039] When the utility model is used, the discharge box 1 is placed in the discharge port at the bottom of the sand and gravel bin, and the sand and gravel in the sand and gravel bin falls onto the screening net 4. The sand and gravel that meet certain volume conditions pass through the screening net 4 and fall into the discharge hopper 2, and can finally be discharged through the discharge pipe 3, while the larger stones remain on the top of the screening net 4, and through the inclination of the screening net 4, the larger stones slide into the discharge box 6, and the driving motor 8 is started to drive the first rotating rod 9 and the second rotating rod 16 to rotate simultaneously, and the rotation of the first rotating rod 9 drives the cam 10 to rotate The elastic member 5 is arranged to make the screening net 4 vibrate vertically, thereby accelerating the screening speed of the screening net 4 for sand and gravel, and preventing some stones with larger particles from covering the top of the screening net 4 and affecting the subsequent screening of sand and gravel by the screening net 4. The second rotating rod 16 rotates to drive the connecting rods 12 on both sides and the scraper 13 at one end thereof to rotate. The scraper 13 contacts the lower hopper 2, thereby scraping and cleaning the inner wall of the lower hopper 2, and preventing the sand and soil mixed in the sand and gravel from adhering to the inner wall of the lower hopper 2 and affecting the sand and gravel discharge process.

[0040] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A material unloading device for a sand and gravel silo, characterized in that: It includes a discharge box, the bottom of which is connected to a discharge hopper and a discharge pipe in sequence, a screening net is slidably arranged inside the discharge box, elastic parts connected to the screening net are arranged on both sides of the inner wall of the discharge box, one side of the discharge box is connected to a discharge box, an extension plate is arranged on one side of the discharge box, a driving motor is arranged at the bottom of the extension plate, the output shaft of the driving motor is connected to a first rotating rod, one end of the first rotating rod passes through the discharge box and is connected to a cam, a vertical rod is rotatably installed inside the discharge box, the vertical rod is transmission-connected to the first rotating rod, connecting rods are arranged on both sides of the vertical rod, a scraper is arranged at one end of the connecting rod, and the scraper contacts the inner wall of the discharge hopper.

2. A material discharge device for a sand and gravel silo according to claim 1, characterized in that: The elastic member includes a sleeve, an inner rod, a first spring and a connecting block. The sleeve is slidably sleeved on the inner rod. The first spring is arranged inside the sleeve and connected to the top of the inner rod. The connecting block is arranged at the bottom of the inner rod. One end of the connecting block is connected to the inner wall of the discharge box.

3. A material discharge device for a sand and gravel silo according to claim 1, characterized in that: Cross bars are arranged on both sides of the inner wall of the material discharge box, a fixing ring is arranged between the two cross bars, and the vertical bar is rotatably installed in the fixing ring.

4. The material discharge device for a sand and gravel silo according to claim 1, characterized in that: A second rotating rod is rotatably installed on one side of the unloading box, one end of the second rotating rod is connected to the first bevel gear, a second bevel gear is arranged on the top of the vertical rod, the second bevel gear is meshed and connected with the first bevel gear, and pulleys are fixedly sleeved on the outer walls of one end of the first rotating rod and the second rotating rod, a belt is arranged between the two pulleys, and the two pulleys are connected through the belt transmission.

5. A material discharge device for a sand and gravel silo according to claim 4, characterized in that: A protection box is arranged on the inner wall of the material discharge box, and the second rotating rod, the first bevel gear and the second bevel gear are all located inside the protection box.

6. A material discharge device for a sand and gravel silo according to claim 1, characterized in that: A baffle is slidably penetrated inside the discharge box, a pull plate is arranged at the front end of the baffle, and a second spring is arranged at the rear end of the pull plate and the front end of the discharge box.

7. The material discharge device for a sand and gravel silo according to claim 1, characterized in that: The feed pipe is provided with a control valve.

8. The material unloading device for a sand and gravel silo according to claim 1, characterized in that: The four sides of the bottom of the lower hopper are all provided with supporting legs.

Images