Efficient sand screening device for municipal engineering construction

Abstract

The utility model discloses an efficient sand screening device for municipal engineering construction, and relates to the technical field of sand screening devices. The sand screening device comprises a base, the top of the base is rotationally connected with a sand screening barrel through a rotating supporting seat, a spiral blade is fixedly arranged in the sand screening barrel, the front end of the sand screening barrel is fixedly sleeved with a gear ring, the top of the base is fixedly connected with two supporting frames, and a motor is fixedly installed at the top of the supporting frame on the rear side. The rotating end of the motor is fixedly connected with a rotating shaft. The cam is driven by the rotating shaft to rotate, the cam rotates to press the tail end of the knocking hammer, so that the hammer head at the front end of the knocking hammer is driven to rotate upwards around the rotating rod to be lifted, and when the cam is separated from the tail end of the knocking hammer, the hammer head at the front end of the knocking hammer freely falls under the action of gravity and can collide with the middle lantern ring. And the sand screening barrel is vibrated, and sand blocked at screen meshes of the sand screening barrel can be vibrated off, so that the sand can be continuously and efficiently screened.

Description

Technical Field

[0001] The utility model belongs to the technical field of sand screening devices, in particular to a high-efficiency sand screening device for municipal engineering construction. Background Art

[0002] Fine sand is an indispensable material in the process of municipal engineering construction. Some of the prior art screens sand manually, which has the disadvantages of taking a lot of time and manpower, high labor intensity and slow sand screening speed. After retrieval, the patent with application number 202121656190.4 discloses a high-efficiency sand screening device for municipal engineering construction. It includes a support plate, a mounting frame, a rolling drum, a motor, a driving gear, a driven gear, a spiral blade and a sleeve; the two ends of the rolling drum are respectively provided with a feed port and a discharge port, and a plurality of groups of mounting grooves are arranged on the outer circumference of the rolling drum; a screen is arranged inside the plurality of mounting grooves; the spiral blade is installed inside the rolling drum, and the spiral blade is connected to the inner wall of the rolling drum; the sleeve is rotatably connected to the rolling drum, and one side of the lower end of the sleeve is connected to the upper end surface of the support plate; the motor is installed on the mounting frame, and the output shaft of the motor is connected to the driving gear; the driven gear is sleeved on the outer circumference of the rolling drum, and the driven gear is meshed with the driving gear for transmission; the lower end of the support plate is respectively connected to a plurality of groups of support legs, and a plurality of groups of strip through holes are provided on the support plate.

[0003] However, during actual use, the applicant found that due to the lack of an anti-blocking structure, some sand would get stuck in the mesh of the screen, causing the screen to be blocked, thereby reducing the sand screening effect. In view of this, we propose an efficient sand screening device for municipal engineering construction. Utility Model Content

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model discloses a high-efficiency sand screening device for municipal engineering construction, comprising a base, the top of the base is rotatably connected with a sand screening drum through a rotating support seat, the interior of the sand screening drum is fixedly provided with a spiral blade, the front end of the sand screening drum is sleeved and fixed with a gear ring, the top of the base is fixedly connected with a support frame, and two support frames are arranged on the top of the base, a motor is fixedly installed on the top of the support frame on the rear side, the rotating end of the motor is fixedly connected with a rotating shaft, the rotating shaft is rotatably connected with a supporting seat fixed on the top of the support frame on the front side through a bearing, the front end of the rotating shaft is sleeved and fixed with a gear, the gear is meshed with the gear ring, the middle part of the sand screening drum is sleeved and fixed with an intermediate ring, a rotating rod is fixedly connected between the two support frames, a knocking hammer is sleeved and fixed on the rotating rod above the intermediate ring, and a cam is sleeved and fixed at a position on the rotating shaft near the knocking hammer.

[0006] Preferably, sand retaining plates are symmetrically fixedly connected to the tops of the bases on both sides of the sand screening cylinder.

[0007] Preferably, a sand collecting hopper is fixedly connected to the base below the sand retaining plate, and a sand leakage groove is provided on the top of the base between the two sand retaining plates.

[0008] Preferably, the bottom of the sand collecting hopper is inclined, and a sand discharge spout is provided on one side of the sand collecting hopper.

[0009] Preferably, a control switch is fixedly mounted on the side wall of the support frame at the rear side, the control switch is electrically connected to the external power supply via a wire, and the motor is electrically connected to the control switch via a wire.

[0010] Preferably, two rotating supports are provided, the bottoms of the two rotating supports are fixedly connected to the top of the base, and the sand screening drum is rotatably connected to the rotating supports via a bearing.

[0011] The utility model has the following beneficial effects:

[0012] The utility model discloses a high-efficiency sand screening device for municipal engineering construction, which drives a cam to rotate through a rotating shaft. The rotation of the cam can press the tail end of the percussion hammer, thereby driving the hammer head at the front end of the percussion hammer to rotate and lift upward around a rotating rod. When the cam is separated from the tail end of the percussion hammer, the hammer head at the front end of the percussion hammer freely falls under the action of gravity, and can hit the middle sleeve ring, so that the sand screening cylinder vibrates, and the sand blocked at the screen mesh of the sand screening cylinder can be shaken off, so that the sand can be continuously and efficiently screened. A sand retaining plate is used to block the spilled sand, so that the sand slides into the sand collecting hopper along the inner wall of the sand retaining plate to prevent the sand from being spilled on both sides of the device. The screened fine sand can be collected by the sand collecting hopper and discharged into a cart through a sand discharge nozzle. There is no need for personnel to use a shovel to load the screened sand into the cart, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is a front structural schematic diagram of a high-efficiency sand screening device for municipal engineering construction according to the utility model;

[0015] Figure 2 This is a rear structural schematic diagram of a high-efficiency sand screening device for municipal engineering construction according to the utility model;

[0016] Figure 3 This utility model is a high-efficiency sand screening device for municipal engineering construction Figure 1 A magnified view of the structure in the middle.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Base; 2. Sand screening cylinder; 21. Spiral blades; 22. Intermediate sleeve ring; 3. Support frame; 4. Motor; 5. Rotating shaft; 6. Support seat; 7. Gear; 8. Gear ring; 9. Rotating support seat; 10. Control switch; 11. Sand baffle; 12. Sand collecting bucket; 121. Sand discharge nozzle; 13. Cam; 14. Rotating rod; 15. Beating hammer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 As shown, the utility model provides a technical solution:

[0021] Embodiment 1: A high-efficiency sand screening device for municipal engineering construction comprises a base 1, the top of the base 1 is rotatably connected to a sand screening cylinder 2 through a rotating support seat 9, two rotating support seats 9 are provided, and the bottoms of the two rotating support seats 9 are fixedly connected to the top of the base 1, the sand screening cylinder 2 is rotatably connected to the rotating support seat 9 through a bearing, a spiral blade 21 is fixedly provided inside the sand screening cylinder 2, a gear ring 8 is sleeved and fixed at the front end of the sand screening cylinder 2, a support frame 3 is fixedly connected to the top of the base 1, and two support frames 3 are provided at the top of the base 1, a motor 4 is fixedly installed on the top of the rear support frame 3, a control switch 10 is fixedly installed on the side wall of the rear support frame 3, the control switch 10 is electrically connected to an external power supply through a wire, and the motor 4 is connected to the control The switch 10 is electrically connected, and the rotating end of the motor 4 is fixedly connected with a rotating shaft 5, and the rotating shaft 5 is rotatably connected to a supporting seat 6 fixed on the top of the front support frame 3 through a bearing, and a gear 7 is sleeved and fixed on the front end of the rotating shaft 5, and the gear 7 is meshed and connected with a gear ring 8. An intermediate sleeve 22 is sleeved and fixed in the middle of the sand screening cylinder 2, and a rotating rod 14 is fixedly connected between the two support frames 3. A percussion hammer 15 is sleeved and fixed on the rotating rod 14 above the intermediate sleeve 22, and a cam 13 is sleeved and fixed at a position near the percussion hammer 15 on the rotating shaft 5. The cam 13 is driven to rotate by the rotating shaft 5, and the rotation of the cam 13 can press the tail end of the percussion hammer 15, thereby driving the hammer head at the front end of the percussion hammer 15 to rotate and lift upward around the rotating rod 14. When the cam 13 and the tail end of the percussion hammer 15 are separated When the sand is separated from the sand screening cylinder 2, the hammer head at the front end of the hammer 15 falls freely under the action of gravity, and can hit the middle sleeve ring 22, so that the sand screening cylinder 2 vibrates, and the sand blocked in the screen mesh of the sand screening cylinder 2 can be shaken off, so that the sand can be screened continuously and efficiently. When screening sand in municipal engineering construction, the motor 4 can be driven to rotate by the control switch 10. The rotation of the motor 4 can drive the rotating shaft 5 to rotate together with the gear 7. The rotation of the gear 7 can drive the gear ring 8 to rotate together with the sand screening cylinder 2. At this time, the sieve to be screened can be placed in the sand screening cylinder 2 from the rear end of the sand screening cylinder 2. As the sand screening cylinder 2 rotates, the spiral blades 21 inside the sand screening cylinder 2 can drive the sand entering the sand screening cylinder 2 to move forward, and the sand can be screened by the sand screening cylinder 2 The cam 13 is rotated to press the tail end of the hammer 15, so that the front end hammer head of the hammer 15 rotates upward around the rotating rod 14. As the cam 13 continues to rotate, when the cam 13 is separated from the tail end of the hammer 15, the front end hammer head of the hammer 15 falls freely under the action of gravity and hits the middle sleeve ring 22, so that the sand screening cylinder 2 vibrates, and the sand blocked at the screen mesh of the sand screening cylinder 2 can be shaken off. As the cam 13 rotates, the front end hammer head of the hammer 15 can be driven to rise and fall repeatedly, so that the sand screening cylinder 2 vibrates, thereby achieving continuous and efficient screening of sand.

[0022] Embodiment 2: The difference between this embodiment and embodiment 1 lies in that, sand baffles 11 are symmetrically fixedly connected to the top of the base 1 on both sides of the sand screening cylinder 2, which are used to block the spilled sand, so that the sand slides into the sand collecting hopper 12 along the inner wall of the sand baffles 11, to prevent the sand from spilling on both sides of the device; a sand collecting hopper 12 is fixedly connected to the base 1 below the sand baffles 11, a sand leakage groove is provided on the top of the base 1 between the two sand baffles 11, the bottom of the sand collecting hopper 12 is inclined, and a sand discharge spout 121 is provided on one side of the sand collecting hopper 12, the screened fine sand can be collected by the sand collecting hopper 12 and discharged into the cart through the sand discharge spout 121, there is no need for personnel to use a shovel to load the screened sand into the cart, which is more convenient, and during the sand screening process, the screened fine sand can fall into the sand collecting hopper 12 and be discharged into the external cart through the sand discharge spout 121.

[0023] Working principle: When in use, the motor 4 can be driven to rotate by the control switch 10. The rotation of the motor 4 can drive the rotating shaft 5 to rotate together with the gear 7. The rotation of the gear 7 can drive the gear ring 8 to rotate together with the sand screening cylinder 2. At this time, the sieve to be screened can be placed in the sand screening cylinder 2 from the rear end of the sand screening cylinder 2. As the sand screening cylinder 2 rotates, the spiral blades 21 inside the sand screening cylinder 2 can drive the sand entering the sand screening cylinder 2 to move forward, and the sand can be screened through the sand screening cylinder 2. Large particles of sand can eventually be discharged from the front end of the sand screening cylinder 2. In this process, the rotation of the rotating shaft 5 can drive the cam 13 to rotate, and the rotation of the cam 13 can hit the tail end of the hammer 15 The cam 13 is pressed to make the front end hammer head of the percussion hammer 15 rotate upward around the rotating rod 14. As the cam 13 continues to rotate, when the cam 13 is separated from the tail end of the percussion hammer 15, the front end hammer head of the percussion hammer 15 falls freely under the action of gravity and hits the middle sleeve ring 22, causing the sand screening cylinder 2 to vibrate, and the sand blocked in the screen mesh of the sand screening cylinder 2 can be shaken off. As the cam 13 rotates, the front end hammer head of the percussion hammer 15 can be driven to rise and fall repeatedly, causing the sand screening cylinder 2 to vibrate, thereby achieving continuous and efficient screening of the sand. During the sand screening process, the screened fine sand can fall into the sand collecting hopper 12 and be discharged to the external cart through the sand discharge nozzle 121.

[0024] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0025] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments and any equivalent replacement of some of the technical features therein are within the protection scope of the present invention.

Claims

1. A high-efficiency sand screening device for municipal engineering construction, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected to a sand screening cylinder (2) via a rotating support seat (9), a spiral blade (21) is fixedly arranged inside the sand screening cylinder (2), a gear ring (8) is sleeved and fixedly arranged at the front end of the sand screening cylinder (2), a support frame (3) is fixedly connected to the top of the base (1), and two support frames (3) are arranged at the top of the base (1), a motor (4) is fixedly installed at the top of the rear support frame (3), a rotating end of the motor (4) is fixedly connected to a rotating shaft (5), and the rotating shaft (5) is connected to the front through a bearing. The support frame (3) on the side is rotatably connected to a support seat (6) fixed on the top, a gear (7) is sleeved and fixed on the front end of the rotating shaft (5), and the gear (7) is meshed and connected with a gear ring (8), an intermediate sleeve ring (22) is sleeved and fixed on the middle part of the sand screening cylinder (2), a rotating rod (14) is fixedly connected between the two supporting frames (3), a percussion hammer (15) is sleeved and fixed on the rotating rod (14) above the intermediate sleeve ring (22), and a cam (13) is sleeved and fixed at a position close to the percussion hammer (15) on the rotating shaft (5).

2. A high-efficiency sand screening device for municipal engineering construction according to claim 1, characterized in that: Sand retaining plates (11) are symmetrically fixedly connected to the tops of the bases (1) on both sides of the sand screening cylinder (2).

3. A high-efficiency sand screening device for municipal engineering construction according to claim 2, characterized in that: A sand collecting hopper (12) is fixedly connected to the base (1) below the sand retaining plate (11), and a sand leakage groove is provided on the top of the base (1) between the two sand retaining plates (11).

4. A high-efficiency sand screening device for municipal engineering construction according to claim 3, characterized in that: The bottom of the sand collecting hopper (12) is arranged in an inclined manner, and a sand discharge spout (121) is arranged on one side of the sand collecting hopper (12).

5. The high-efficiency sand screening device for municipal engineering construction according to claim 1 is characterized in that: A control switch (10) is fixedly mounted on the side wall of the support frame (3) at the rear side, the control switch (10) is electrically connected to an external power source via a wire, and the motor (4) is electrically connected to the control switch (10) via a wire.

6. The high-efficiency sand screening device for municipal engineering construction according to claim 1 is characterized in that: Two rotating supports (9) are provided, and the bottoms of the two rotating supports (9) are fixedly connected to the top of the base (1), and the sand screening cylinder (2) is rotatably connected to the rotating supports (9) via a bearing.

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