Pre-stirring sand screening machine

Abstract

The invention belongs to the technical field of building tools, and particularly relates to a pre-stirring sand screening machine which comprises a screening box, a feeding pipe is fixedly arranged on the upper side wall of the screening box, a leakage plate is fixedly arranged in the feeding pipe, a stirring box is fixedly arranged on the upper side wall of the feeding pipe, and a sealing mechanism is arranged at the upper end of the stirring box. A stirring mechanism is arranged in the stirring box, symmetrical supporting blocks are fixedly arranged at the front end and the rear end of the inner wall of the screening box, through cooperation of a feeding pipe, a leakage plate, the stirring box and the stirring mechanism, before sand and gravel are screened, the sand and gravel can be effectively and evenly stirred through the stirring mechanism, and large sand and gravel blocks in the sand and gravel blocks are smashed; therefore, the screening efficiency is improved; when sand and gravel are screened, screened fine sand meeting the requirement can be conveyed, large sand and gravel which do not meet the requirement are directly poured into the sand and gravel recycling box so that the large sand and gravel can be smashed and screened again, and waste of the sand and gravel is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of construction tools, in particular to a pre-mixing sand screening machine. Background Art

[0002] The sand used in engineering construction needs to be screened before it can be used. The initial screening method is to use a sieve for manual screening. This method mainly relies on manpower, has high labor intensity and low work efficiency. With the increasing workload of construction, the efficiency of manual sand screening can no longer meet the needs of the project. With the development and application of mechanical equipment, mechanical sand screening equipment continues to appear;

[0003] However, the existing sand screening machine still has the following technical problems when in use:

[0004] The existing sand screening machine cannot pre-mix the sand and gravel when in use, so as to effectively crush the larger sand and gravel inside, or effectively separate the sand and gravel to increase the efficiency of sand screening. After the sand and gravel are screened, it is impossible to quickly dump the larger sand and gravel screened inside and crush and screen these larger sand and gravel particles again.

[0005] For this reason, a pre-mixing sand screening machine is now proposed to solve the above-mentioned problems. Summary of the invention

[0006] The object of the present invention is to provide a pre-mixing sand screening machine to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pre-mixing sand screening machine comprises a screening box, a feeding pipe is fixedly provided on the upper side wall of the screening box, a leakage plate is fixedly provided inside the feeding pipe, a mixing box is fixedly provided on the upper side wall of the feeding pipe, a sealing mechanism is provided on the upper end of the mixing box, a mixing mechanism is provided inside the mixing box, symmetrical supporting blocks are fixedly provided on the front and rear ends of the inner wall of the screening box, springs are fixedly provided on the upper side walls of the symmetrical supporting blocks, screening slots are fixedly provided on the upper ends of the symmetrical springs, a screening plate is fixedly provided on the lower side wall of the screening slot, a vibration motor is fixedly provided on the front and rear side walls of the screening slot, a sealing mechanism is provided on the right end inside the screening slot, a scraper is provided on the left end inside the screening slot through a moving mechanism, a feeding mechanism is fixedly provided at the lower end of the screening box at the screen plate, and a sand and gravel recovery box is provided at the right end of the screening box at the lower end of the screening slot.

[0008] Preferably, the sealing mechanism includes a chassis, which is fixedly connected to the left side wall of the mixing box, a first motor is fixedly arranged inside the chassis, a first transmission rod is fixedly arranged at the output end of the first motor, a fixed block is fixedly arranged at the upper end of the first transmission rod, a sealing plate is fixedly arranged on the right side wall of the fixed block, a rubber layer is fixedly arranged on the lower side wall of the sealing plate, and the lower side wall of the rubber layer is in contact with the upper side wall of the mixing box.

[0009] Preferably, the stirring mechanism includes two second motors, both of which are fixedly arranged on the rear side wall of the stirring box, both of which are fixedly provided with rotating rods at the output ends of the two second motors, and both of which are fixedly provided with evenly arranged stirring rods on the rod walls of the two rotating rods.

[0010] Preferably, a horizontal plate is fixedly provided on the upper end of the right side wall of the screening box, a filter box is fixedly provided on the upper end of the horizontal plate, filter cotton is fixedly provided inside the filter box, an air inlet pipe is fixedly provided on the left side wall of the filter box, the left end of the air inlet pipe extends to the interior of the screening box, an exhaust fan is fixedly provided inside the air inlet pipe, and an air outlet pipe is fixedly provided on the right side wall of the filter box.

[0011] Preferably, the sealing mechanism includes two mounting blocks, which are respectively fixedly connected to the front side wall and the rear side wall of the screening slot, the side walls of the two mounting blocks are fixedly provided with electric push rods, and a movable plate is commonly fixedly provided at the lower ends of the two electric push rods, and a sealing plate is slidably provided at the right end inside the screening slot, and the lower side wall of the sealing plate is fixedly connected to the upper side wall of the movable plate.

[0012] Preferably, the moving mechanism includes two screw rods, and slide grooves are provided at the front and rear ends of the inner wall of the screening trough, and the two screw rods are rotatably arranged inside the slide groove, and a protective box is fixedly provided on the left side wall of the screening trough, and the left ends of the two screw rods extend into the interior of the protective box, and a third motor is fixedly provided inside the protective box, and a second transmission rod is fixedly provided at the output end of the third motor, and the other end of the second transmission rod is rotatably connected to the left side wall of the screening trough, and the rod wall of the second transmission rod is sleeved with a symmetrical first pulley, and the left ends of the rod walls of the two screw rods are sleeved with a second pulley, and the two first pulleys are rotatably connected to the two second pulleys through belts, and the rod walls of the two screw rods are threaded with moving blocks, and the side wall of the scraper is fixedly connected to the side close to the two moving blocks.

[0013] Preferably, the feeding mechanism includes a bracket, which is fixedly connected to the left side wall of the screening box, transmission rollers are rotatably provided at both ends of the interior of the bracket, and the interior of the bracket is provided with evenly arranged support rollers rotatably between two transmission rollers, and a fourth motor is fixedly provided at both ends of the rear side wall of the bracket, and the rear ends of the two transmission rollers are fixedly connected to the output ends of the fourth motor, and a conveyor belt is commonly provided on the outside of the transmission roller and the support roller.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1) Through the cooperation of the feed pipe, the leak plate, the mixing box and the mixing mechanism, the sand and gravel can be effectively mixed and the larger sand and gravel blocks inside can be crushed before screening, thereby improving the screening efficiency;

[0016] 2) When screening sand and gravel, the fine sand that meets the requirements can be transported, and the larger pieces of sand and gravel that do not meet the requirements can be directly poured into the sand and gravel recovery box so that they can be crushed and screened again to avoid waste of sand and gravel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0019] Figure 3 It is a schematic diagram of the top view of the feeding mechanism;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the mixing box;

[0021] Figure 5 is a schematic diagram of the structure of the second motor, the rotating rod and the stirring rod;

[0022] Figure 6 A schematic diagram of the top view of the screening tank.

[0023] In the figure: 1 screening box, 2 feeding pipe, 3 leakage plate, 4 stirring box, 5 support block, 6 spring, 7 screening slot, 8 sieve plate, 9 vibration motor, 10 scraper, 11 sand and gravel recovery box, 12 chassis, 13 first motor, 14 transmission rod, 15 fixed block, 16 sealing plate, 17 second motor, 18 rotating rod, 19 stirring rod, 20 cross plate, 21 filter box, 22 filter cotton, 23 air inlet pipe, 24 exhaust fan, 25 air outlet pipe, 26 mounting block, 27 electric push rod, 28 moving plate, 29 blocking plate, 30 screw rod, 31 protection box, 32 third motor, 33 transmission rod, 34 moving block, 35 bracket, 36 transmission roller, 37 support roller, 38 fourth motor, 39 conveyor belt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] Example:

[0027] See also Figure 1-6 , the present invention provides a technical solution:

[0028] A pre-mixing sand screening machine comprises a screening box 1, a feed pipe 2 is fixedly arranged on the upper side wall of the screening box 1, a leak plate 3 is fixedly arranged inside the feed pipe 2, a stirring box 4 is fixedly arranged on the upper side wall of the feed pipe 2, a sealing mechanism is arranged on the upper end of the stirring box 4, a stirring mechanism is arranged inside the stirring box 4, symmetrical support blocks 5 are fixedly arranged on the front and rear ends of the inner wall of the screening box 1, springs 6 are fixedly arranged on the upper side walls of the symmetrical support blocks 5, screening slots 7 are fixedly arranged on the upper ends of the symmetrical springs 6, a screening plate 8 is fixedly arranged on the lower side wall of the screening slot 7, a vibration motor 9 is fixedly arranged on the front and rear side walls of the screening slot 7, a blocking mechanism is arranged on the right end inside the screening slot 7, and the screening slot The left end of the interior of 7 is provided with a scraper 10 through a moving mechanism, a feeding mechanism is fixedly provided at the lower end of the screen plate 8 inside the screening box 1, and a sand and gravel recovery box 11 is provided at the right end of the screening box 1 at the lower end of the screening slot 7. Through the cooperation of the feeding pipe 2, the leaking plate 3, the stirring box 4 and the stirring mechanism, the sand and gravel can be effectively stirred evenly and the larger sand and gravel blocks inside can be crushed through the stirring mechanism before screening the sand and gravel, thereby improving the screening efficiency; when screening the sand and gravel, the fine sand that meets the requirements can be transmitted, and the larger sand and gravel that do not meet the requirements can be directly poured into the sand and gravel recovery box, so as to crush and screen them again, thereby avoiding waste of sand and gravel.

[0029] The sealing mechanism includes a chassis 12, which is fixedly connected to the left side wall of the mixing box 4. A first motor 13 is fixedly arranged inside the chassis 12, a first transmission rod 14 is fixedly arranged at the output end of the first motor 13, a fixing block 15 is fixedly arranged at the upper end of the first transmission rod 14, a sealing plate 16 is fixedly arranged on the right side wall of the fixing block 15, a rubber layer is fixedly arranged on the lower side wall of the sealing plate 16, and the lower side wall of the rubber layer contacts the upper side wall of the mixing box 4 to prevent dust from overflowing during the crushing process.

[0030] The stirring mechanism includes two second motors 17, and the two second motors 17 are fixedly arranged on the rear wall of the mixing box 4. The output ends of the two second motors 17 are fixedly provided with rotating rods 18, and the rod walls of the two rotating rods 18 are fixedly provided with evenly arranged stirring rods 19, which can not only stir the internal sand and gravel to loosen them, but also crush larger sand and gravel blocks.

[0031] A horizontal plate 20 is fixedly provided on the upper end of the right side wall of the screening box 1, a filter box 21 is fixedly provided on the upper end of the horizontal plate 20, filter cotton 22 is fixedly provided inside the filter box 21, an air inlet pipe 23 is fixedly provided on the left side wall of the filter box 21, the left end of the air inlet pipe 23 extends to the interior of the screening box 1, an exhaust fan 24 is fixedly provided inside the air inlet pipe 23, and an air outlet pipe 25 is fixedly provided on the right side wall of the filter box 21.

[0032] The blocking mechanism includes two mounting blocks 26, which are respectively fixedly connected to the front side wall and the rear side wall of the screening slot 7. The side walls of the two mounting blocks 26 are fixedly provided with electric push rods 27, and the lower ends of the two electric push rods 27 are jointly fixedly provided with a movable plate 28. A blocking plate 29 is slidingly provided at the right end of the inside of the screening slot 7, and the lower side wall of the blocking plate 29 is fixedly connected to the upper side wall of the movable plate 28. During normal screening, the blocking plate 29 blocks the right end of the inside of the screening slot 7. When it is necessary to pour out the larger sand and gravel inside, the electric push rod 27 is used to drive the blocking plate 29 to move downward, thereby facilitating the discharge of the larger sand and gravel inside.

[0033] The moving mechanism includes two screw rods 30. The front end and the rear end of the inner wall of the screening slot 7 are provided with a slide slot. The two screw rods 30 are rotatably arranged inside the slide slot. A protection box 31 is fixedly arranged on the left side wall of the screening slot 7. The left ends of the two screw rods 30 extend to the inside of the protection box 31. A third motor 32 is fixedly arranged inside the protection box 31. A second transmission rod 33 is fixedly arranged at the output end of the third motor 32. The other end of the second transmission rod 33 is rotatably connected to the left side wall of the screening slot 7. The rod wall of the second transmission rod 33 is sleeved with A symmetrical first pulley and a second pulley are sleeved on the left ends of the rod walls of the two screw rods 30. The two first pulleys are rotatably connected to the two second pulleys through belts. The rod walls of the two screw rods 30 are threaded with moving blocks 34. The side wall of the scraper 10 is fixedly connected to the side close to the two moving blocks 34. When larger sand and gravel remain inside the screening slot 7, the scraper 10 is driven to move by the moving mechanism, thereby pushing the larger sand and gravel inside the screening slot 7 and pushing it into the sand and gravel recovery box 11.

[0034] The feeding mechanism includes a bracket 35, which is fixedly connected to the left side wall of the screening box 1. Transmission rollers 36 are rotatably provided at both ends of the inside of the bracket 35. Evenly arranged support rollers 37 are rotatably provided inside the bracket 35 and located between the two transmission rollers 36. A fourth motor 38 is fixedly provided at both ends of the rear side wall of the bracket 35. The rear ends of the two transmission rollers 36 are fixedly connected to the output end of the fourth motor 38. A conveyor belt 39 is commonly provided on the outside of the transmission rollers 36 and the support rollers 37 to facilitate the feeding of the fine sand and gravel screened.

[0035] Working principle:

[0036] The sand and gravel to be screened are poured into the mixing box 4, and the first motor 13 is started. The first motor 13 drives the transmission rod 14 at the output end to rotate, and the transmission rod 14 drives the upper fixed block 15 to rotate. The fixed block 15 drives the sealing plate 16 to rotate to the upper end of the mixing box 4 for sealing. The sand and gravel are crushed and mixed by the stirring mechanism inside the mixing box 4. When the size of the leakage hole of the leakage plate 3 is met, the sand and gravel leak through the leakage plate 3, and the vibration motor 9 drives the screening slot 7 to vibrate, so as to screen the leaked sand and gravel. The crushed stones fall on the upper end of the feeding mechanism and are fed, while the larger sand and gravel remaining remain in the screening slot 7. The electric push rod 27 is started, and the electric push rod 27 drives the movable plate 28 at the lower end to move downward, and the movable plate 28 drives the blocking plate 29 of the side wall to move downward, so that the larger sand and gravel inside leak into the sand and gravel recovery box 11, so that it is convenient to pour it back into the mixing box 4 for crushing and mixing again. In the screening process, the exhaust fan 24 can be started to draw the internal dust into the filter box 21 and filter it through the internal filter cotton 22.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-mixing sand screening machine, comprising a screening box (1), characterized in that: A feed pipe (2) is fixedly provided on the upper side wall of the screening box (1), a leak plate (3) is fixedly provided inside the feed pipe (2), a stirring box (4) is fixedly provided on the upper side wall of the feed pipe (2), a sealing mechanism is provided at the upper end of the stirring box (4), a stirring mechanism is provided inside the stirring box (4), symmetrical support blocks (5) are fixedly provided at the front and rear ends of the inner wall of the screening box (1), springs (6) are fixedly provided on the upper side walls of the symmetrical support blocks (5), and the upper ends of the symmetrical springs (6) are connected in parallel. A screening trough (7) is fixedly arranged thereon, a screening plate (8) is fixedly arranged on the lower side wall of the screening trough (7), a vibration motor (9) is fixedly arranged on the front side wall and the rear side wall of the screening trough (7), a blocking mechanism is arranged at the right end inside the screening trough (7), a scraper (10) is arranged at the left end inside the screening trough (7) via a moving mechanism, a feeding mechanism is fixedly arranged inside the screening box (1) at the lower end of the screening plate (8), and a sand and gravel recovery box (11) is arranged at the right end of the screening box (1) at the lower end of the screening trough (7).

2. A pre-mixing sand screening machine according to claim 1, characterized in that: The sealing mechanism comprises a chassis (12), the chassis (12) being fixedly connected to the left side wall of the mixing box (4), a first motor (13) being fixedly arranged inside the chassis (12), a first transmission rod (14) being fixedly arranged at the output end of the first motor (13), a fixing block (15) being fixedly arranged at the upper end of the first transmission rod (14), a sealing plate (16) being fixedly arranged on the right side wall of the fixing block (15), a rubber layer being fixedly arranged on the lower side wall of the sealing plate (16), and the lower side wall of the rubber layer being in contact with the upper side wall of the mixing box (4).

3. A pre-mixing sand screening machine according to claim 1, characterized in that: The stirring mechanism comprises two second motors (17), the two second motors (17) are fixedly arranged on the rear side wall of the stirring box (4), the output ends of the two second motors (17) are fixedly provided with rotating rods (18), and the rod walls of the two rotating rods (18) are fixedly provided with stirring rods (19) arranged evenly.

4. A pre-mixing sand screening machine according to claim 1, characterized in that: A transverse plate (20) is fixedly provided at the upper end of the right side wall of the screening box (1), a filter box (21) is fixedly provided at the upper end of the transverse plate (20), filter cotton (22) is fixedly provided inside the filter box (21), an air inlet pipe (23) is fixedly provided on the left side wall of the filter box (21), the left end of the air inlet pipe (23) extends to the interior of the screening box (1), an exhaust fan (24) is fixedly provided inside the air inlet pipe (23), and an air outlet pipe (25) is fixedly provided on the right side wall of the filter box (21).

5. The pre-mixing sand screening machine according to claim 1, characterized in that: The blocking mechanism comprises two mounting blocks (26), the two mounting blocks (26) being fixedly connected to the front side wall and the rear side wall of the screening slot (7) respectively, the side walls of the two mounting blocks (26) being fixedly provided with electric push rods (27), the lower ends of the two electric push rods (27) being fixedly provided with a movable plate (28), a blocking plate (29) being slidably provided at the right end inside the screening slot (7), the lower side wall of the blocking plate (29) being fixedly connected to the upper side wall of the movable plate (28).

6. A pre-mixing sand screening machine according to claim 1, characterized in that: The moving mechanism comprises two screw rods (30), the front end and the rear end of the inner wall of the screening slot (7) are provided with slide grooves, the two screw rods (30) are rotatably arranged inside the slide grooves, a protection box (31) is fixedly arranged on the left side wall of the screening slot (7), the left ends of the two screw rods (30) extend into the interior of the protection box (31), a third motor (32) is fixedly arranged inside the protection box (31), a second transmission rod (33) is fixedly arranged at the output end of the third motor (32), and the second The other end of the transmission rod (33) is rotatably connected to the left side wall of the screening groove (7); the rod wall of the second transmission rod (33) is sleeved with a symmetrical first pulley; the left ends of the rod walls of the two screw rods (30) are sleeved with a second pulley; the two first pulleys are rotatably connected to the two second pulleys via belts; the rod walls of the two screw rods (30) are threadedly provided with a moving block (34); and the side wall of the scraper (10) is fixedly connected to a side close to the two moving blocks (34).

7. A pre-mixing sand screening machine according to claim 1, characterized in that: The feeding mechanism comprises a bracket (35), the bracket (35) is fixedly connected to the left side wall of the screening box (1), transmission rollers (36) are rotatably arranged at both ends of the bracket (35), and evenly arranged support rollers (37) are rotatably arranged inside the bracket (35) and located between the two transmission rollers (36), a fourth motor (38) is fixedly arranged at both ends of the rear side wall of the bracket (35), the rear ends of the two transmission rollers (36) are fixedly connected to the output end of the fourth motor (38), and a conveyor belt (39) is commonly arranged outside the transmission roller (36) and the support roller (37).

Images