Building material crushing and screening device

Abstract

The utility model relates to the technical field of crushing equipment, in particular to a building material crushing and screening device which comprises a base, a box body, a connecting rod, an objective table, a rotating shaft and a screening mechanism, the box body is arranged on the upper portion of the base, the upper portion of the box body is connected with the objective table through the connecting rod, and a first driving motor and the rotating shaft are arranged on the objective table. A first crushing bracket and a second crushing bracket are arranged on the rotating shaft to form a crushing structure; a first screening plate is arranged in the box body and located under the second crushing support. A rectangular opening is formed in the base, a screening mechanism is arranged in the rectangular opening, the screening mechanism comprises a screening support, a second screening plate, a discharging plate and a driving set, the screening support is movably connected with a first sliding strip on the box body through a sliding groove in the bottom, and the second screening plate and the discharging plate are arranged on the screening support. The utility model is used for solving the problems that the existing crushing equipment can generate larger dust in the working process and does not have a screening function.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crushing equipment technical field especially relates to a building material crushing and screening device. BACKGROUND

[0002] With the continuous development of the construction industry, the demand for building materials is increasing, and in the processing of building materials, crushing and screening are important links.

[0003] At present, the existing building material crushing equipment has many problems in actual application. On the one hand, the traditional crushing equipment will produce a lot of dust in the crushing process. During the crushing operation, due to the action of mechanical force, the building materials are strongly impacted, extruded and ground, so that the material particles are dispersed into the air to form a large amount of dust. These dusts not only pose a serious threat to the health of the operators, but also may cause respiratory diseases and other health problems if inhaled for a long time. On the other hand, most of the existing crushing equipment does not have a screening function, which means that the building materials after crushing are mixed together regardless of the size of the particles, and additional screening equipment is needed for subsequent processing. This not only increases the complexity and cost of the entire production process, but also reduces the production efficiency. Based on this, we designed a crushing equipment that not only has automatic feeding and dust covering functions, but also can automatically screen to improve the quality of the product. SUMMARY

[0004] In view of the technical problems in the background art, the utility model provides a building material crushing and screening device to solve the problem that the existing crushing equipment produces a lot of dust in the crushing process and does not have a screening function.

[0005] The technical implementation scheme of the utility model is as follows:

[0006] A building material crushing and screening device, comprising a base, a box, a connecting rod, a loading platform, a rotating shaft and a screening mechanism, the box is arranged on the upper part of the base, and the upper part of the box is connected with the loading platform through the connecting rod, the loading platform is provided with a first driving motor and a rotating shaft, and the rotating shaft is provided with a first crushing support and a second crushing support to form a crushing structure; the inside of the box is provided with a first screening plate, and the first screening plate is located directly below the second crushing support; a rectangular opening is arranged on the base, and a screening mechanism is arranged in the rectangular opening, the screening mechanism comprises a screening support, a second screening plate, a discharge plate and a driving group, the screening support is movably connected with the first sliding bar on the box through the sliding groove at the bottom, and the screening support is provided with the second screening plate and the discharge plate; one end of the screening support is connected with the driving group, and the other end of the screening support is connected with a rebounding group.

[0007] Optionally, the second screening plate is obliquely arranged in the screening frame, and the discharge end of the second screening plate is arranged opposite to the discharge plate; the driving group comprises a first support, a second driving motor, an eccentric wheel, an auxiliary wheel and a second support, the first support and the second support are arranged on the base table and one end of the screening frame respectively, and the eccentric wheel on the first support is arranged in connection with the auxiliary wheel on the second support; the second driving motor is arranged on the first support, and the output shaft of the second driving motor is connected with the first rotating shaft through a shaft coupling.

[0008] Optionally, the rebound group comprises a connecting force arm, a sliding rod, a third support and a pressure spring, one end of the connecting force arm is connected with the screening frame, the connecting force arm is movably connected with the connecting hole on the third support through the sliding rod, and the pressure spring is arranged on the outer wall of the sliding rod to form an elastic structure.

[0009] Optionally, one end of the connecting force arm passes through the rectangular opening of the base and is arranged; and the third support is arranged on the base.

[0010] Optionally, the dustproof mechanism comprises a covering bin, a fourth support, a third driving motor, a connecting support, a gear and a synchronous belt, the fourth support is arranged outside the box body, the connecting support is arranged on the fourth support, the second rotating shaft in the connecting groove of the connecting support is provided with the gear, and the gear is in meshing connection with the rack on the covering bin; the covering bin is a cylindrical cavity structure with open ends, and the covering bin is movably connected with the sliding groove on the inner wall of the connecting bin through the second sliding strip on the outer wall.

[0011] Optionally, one end of the second rotating shaft is connected with a first synchronous wheel, and the first synchronous wheel is connected with a second synchronous wheel on the output shaft of the third driving motor through a synchronous belt.

[0012] Optionally, the box body is provided with a feeding support on one side, the feeding support is provided with a conveying belt in the inside, and the feeding end of the feeding support is provided with a feeding hopper.

[0013] Optionally, the base is provided with a discharge port.

[0014] The utility model has the advantages of:

[0015] 1. The utility model discloses a box body is arranged on the upper portion of the base, and a rotating shaft, a first crushing support and a second crushing support are arranged in the inside of the box body, which can rotate under the drive of the first driving motor, and the first crushing support and the second crushing support can crush the material twice, thereby improving the crushing efficiency.

[0016] 2. The utility model discloses that a screening mechanism is arranged in the inside of the box body, which can screen the crushed material, discharge the unqualified material from the discharge plate, and crush the material again, and the qualified material is discharged from the bottom discharge port of the base, thereby facilitating the collection of finished material.

[0017] 3、The utility model discloses, in order to prevent the dust from spilling when breaking, we also designed a dustproof mechanism, under the drive of third drive motor, the covering bin inside the connecting bin is guided, the upper part of the box body smashing bin is covered, prevents the dust from splashing out. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic drawing of the utility model.

[0019] Figure 2 It is the front view of the utility model.

[0020] Figure 3 It is the structure schematic drawing of the feeding support of the utility model.

[0021] Figure 4 It is the structure schematic drawing of the dustproof mechanism of the utility model.

[0022] Figure 5 It is the structure schematic drawing of the rebound group of the utility model.

[0023] Figure 6 It is the structure schematic drawing of the drive group of the utility model.

[0024] Figure 7 It is the structure schematic drawing of the first breaking support and the second breaking support of the utility model.

[0025] Meaning of reference signs in the drawing: 1-box body, 2-connecting rod, 3-object table, 4-first drive motor, 5-base, 6-screening mechanism, 601-screening support, 602-second screening board, 603-discharge plate, 604-connecting force arm, 605-sliding rod, 606-third support, 607-first sliding bar, 608-aid wheel, 609-second drive motor, 610-first support, 611-eccentric wheel, 7-dustproof mechanism, 701-fourth support, 702-connecting support, 703-connecting groove, 704-gear, 705-third drive motor, 706-first synchronous wheel, 707-synchronous belt, 708-covering bin, 709-second sliding bar, 710-rack, 8-feeding support, 9-conveying belt, 10-feeding hopper, 11-connecting bin, 12-rotating shaft, 13-first breaking support, 14-second breaking support, 15-first screening board. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantage of the utility model more clear, the utility model will be described in further detail below with the drawings. Only this declaration, the up, down, left, right, front, back, inside, outside and other orientation words appearing or about to appear in the text of the utility model, only with the drawings of the utility model as the base, it is not the specific limitation of the utility model.

[0027] As Figures 1-7 shown, a building material crushing and screening device, comprising a base 5, a box 1, a connecting rod 2, a loading platform 3, a rotating shaft 12 and a screening mechanism 6, the box 1 is arranged on the upper part of the base 5, and the upper part of the box 1 is connected with the loading platform 3 through the connecting rod 2, the first driving motor 4 and the rotating shaft 12 are arranged on the loading platform 3, the first crushing bracket 13 and the second crushing bracket 14 are arranged on the rotating shaft 12 to form a crushing structure; the inside of the box 1 is provided with a first screening plate 15, and the first screening plate 15 is located directly below the second crushing bracket 14; a rectangular opening is arranged on the base 5, and a screening mechanism 6 is arranged in the rectangular opening, the screening mechanism 6 comprises a screening bracket 601, a second screening plate 602, a discharge plate 603 and a driving group, the screening bracket 601 is movably connected with the first sliding strip 607 on the box 1 through the sliding groove at the bottom, and the second screening plate 602 and the discharge plate 603 are arranged on the screening bracket 601; one end of the screening bracket 601 is connected with the driving group, and the other end of the screening bracket 601 is connected with a rebounding group.

[0028] It should be noted that the alkali-free accelerator may exist in the form of large blocks or particles before crushing, which may bring many inconveniences to actual use. After crushing, the particle size becomes smaller, and it is easier to mix with other materials uniformly. The crushed alkali-free accelerator has a larger specific surface area, which can more fully contact with cement and other cementitious materials, thereby accelerating the reaction speed. In the scene of shotcrete construction and other scenes with high requirements on setting time, this advantage is particularly obvious. The traditional crushing equipment generally needs manual feeding, and after crushing is completed, the crushed material needs to be transported to another device for screening treatment. This repeated transportation process will reduce the efficiency, and the traditional crushing equipment does not have a dustproof effect. The dust generated during crushing will float in the workshop, causing pollution to the working workshop. Based on this, we have made all-round improvements on the traditional crushing equipment. Not only has a dustproof device been added, but also screening treatment can be carried out in time during the crushing process, so as to realize crushing and screening integration and improve drying efficiency.

[0029] It should be further explained that the inside of our box 1 is provided with a crushing chamber, which is a cylindrical cavity structure with openings at the upper and lower ends, and the bottom of the crushing chamber is provided with a first screening plate 15. The first crushing bracket 13 and the second crushing bracket 14 on the rotating shaft 12 crush the alkali-free accelerator.

[0030] Further need explanation is, in the alkali-free accelerator broken process, because the size of the particles are different, therefore, we install the first crushing bracket 13 and the second crushing bracket 14 on the shaft 12, the alkali-free accelerator first with the first crushing bracket 13 contact, realize the first crushing, the large particles are broken into pieces, and drop to the second crushing bracket 14 work area, crushing again, this structure can improve the efficiency of crushing.

[0031] Further need explanation is, in order to the broken alkali-free accelerator for screening treatment, we design a screening mechanism 6 in the rectangular opening of the box 1, wherein the screening bracket 601 is movably connected with the first slide bar 607 on the box 1 through the slide groove at the bottom, and is driven forward by the driving group, and a rebound group is arranged at the other end of the screening bracket 601, which can cooperate with the driving group, so as to realize the reciprocating movement of the whole screening bracket 601, and realize automatic screening.

[0032] As shown in Figures 4-6 the second screening plate 602 is inclinedly arranged in the screening bracket 601, and the discharge end of the second screening plate 602 is arranged in abutment with the discharge plate 603; the driving group comprises a first support 610, a second driving motor 609, an eccentric wheel 611, an auxiliary wheel 608 and a second support, the first support 610 and the second support are arranged on the table top of the base 5 and one end of the screening bracket 601 respectively, and the eccentric wheel 611 on the first support 610 is arranged in abutment with the auxiliary wheel 608 on the second support; the second driving motor 609 is arranged on the first support 610, and the output shaft of the second driving motor 609 is connected with the first rotating shaft through a shaft coupling; the rebound group comprises a connecting force arm 604, a sliding rod 605, a third support 606 and a pressure spring, one end of the connecting force arm 604 is connected with the screening bracket 601, the connecting force arm 604 is movably connected with the connecting hole on the third support 606 through the sliding rod 605, and the pressure spring is arranged on the outer wall of the sliding rod 605 to form an elastic structure; one end of the connecting force arm 604 is arranged through the rectangular opening of the base 5; the third support 606 is arranged on the base 5.

[0033] It should be noted that, in order to realize the driving of the whole screening bracket 601, a first support 610 is arranged on the table top of the base 5, and the eccentric wheel 611 on the first support 610 is arranged in abutment with the auxiliary wheel 608 on the second support of the screening bracket 601, forming an eccentric wheel transmission structure, which realizes reciprocating driving under the driving of the second driving motor 609.

[0034] It needs to be further explained that, in order to make the eccentric wheel 611 always be in engagement with the auxiliary wheel 608, we designed a rebound group, which can generate elastic stress at one end of the screening support 601, so that the auxiliary wheel 608 is always in engagement with the eccentric wheel 611 during driving.

[0035] It needs to be specially pointed out that a sliding rod 605 is arranged on the connecting force arm 604 of the rebound group, and the sliding rod 605 is movably connected with the connecting hole of the third support 606. A compression spring is designed on the outer wall of the sliding rod 605 to form an elastic structure.

[0036] As shown in Figures 1-5 dustproof mechanism 7 is further included. The dustproof mechanism 7 includes a covering bin 708, a fourth support 701, a third driving motor 705, a connecting support 703, a gear 704 and a synchronous belt 707. The fourth support 701 is arranged outside the box body 1, and the fourth support 701 is provided with the connecting support 702. The second rotating shaft inside the connecting groove 703 of the connecting support 702 is provided with the gear 704, which is in meshing connection with the rack 710 on the covering bin 708. The covering bin 708 is a cylindrical cavity structure with both ends open, and the covering bin 708 is movably connected with the sliding groove on the inner wall of the connecting bin 11 through the second sliding strip 709 on the outer wall. One end of the second rotating shaft is connected with the first synchronous wheel 706, and the first synchronous wheel 706 is connected with the second synchronous wheel on the output shaft of the third driving motor 705 through the synchronous belt 707.

[0037] It needs to be pointed out that during the crushing process, a large amount of dust will be generated at the inlet, and in order to realize automatic feeding, the inlet cannot always be closed, and needs to have an automatic opening and closing function. Therefore, we designed a dustproof mechanism 7, in which the covering bin 708 can be lifted and lowered in the connecting bin 11 under the driving of the third driving motor 705, so as to start the third driving motor 705 to drive the gear 704 to realize the lifting and closing functions when feeding is not needed, so as to prevent dust from overflowing from the upper inlet during work.

[0038] As shown in Figures 1-7 the box body 1 is provided with a feeding support 8. The feeding support 8 is provided with a conveying belt 9 inside, and the feeding end of the feeding support 8 is provided with a feeding hopper 10. The base 5 is provided with a discharge port.

[0039] It needs to be pointed out that the feeding support 8 is arranged to drive the conveying belt 9 inside to realize automatic feeding.

[0040] The embodiment of the utility model is explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiment, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A building material crushing and screening device comprising a base (5), a box (1), a connecting rod (2), a carrier (3), a rotating shaft (12) and a screening mechanism (6), characterized in that, The box (1) is arranged on the upper part of the base (5), and the upper part of the box (1) is connected with the loading table (3) through the connecting rod (2), the loading table (3) is provided with the first driving motor (4) and the rotating shaft (12), the rotating shaft (12) is provided with the first crushing support (13) and the second crushing support (14) to form a crushing structure; The inside of the box (1) is provided with the first screening plate (15), and the first screening plate (15) is located directly below the second crushing support (14); The base (5) is provided with a rectangular opening, and the inside of the rectangular opening is provided with a screening mechanism (6), the screening mechanism (6) comprises a screening support (601), a second screening plate (602), a discharge plate (603) and a driving group, the screening support (601) is movably connected with the first sliding bar (607) on the box (1) through a sliding groove in the bottom, and the screening support (601) is provided with the second screening plate (602) and the discharge plate (603); one end of the screening support (601) is connected with the driving group, and the other end of the screening support (601) is connected with a rebounding group.

2. A building material crushing and screening apparatus as claimed in claim 1, characterized in that The second screening plate (602) is arranged in the screening support (601) in an inclined manner, and the discharge end of the second screening plate (602) is arranged in abutment with the discharge plate (603); The driving group comprises a first support (610), a second driving motor (609), an eccentric wheel (611), an auxiliary wheel (608) and a second support, the first support (610) and the second support are arranged on the table top of the base (5) and one end of the screening support (601) respectively, and the eccentric wheel (611) on the rotating shaft of the first support (610) is arranged in abutment with the auxiliary wheel (608) on the second support; The first support (610) is provided with the second driving motor (609), and the output shaft of the second driving motor (609) is connected with the first rotating shaft through a shaft coupling.

3. A building material crushing and screening apparatus as claimed in claim 2, characterized in that The rebounding group comprises a connecting force arm (604), a sliding rod (605), a third support (606) and a pressure spring, one end of the connecting force arm (604) is connected with the screening support (601), the connecting force arm (604) is movably connected with the connecting hole on the third support (606) through the sliding rod (605), and the outer wall of the sliding rod (605) is provided with the pressure spring to form an elastic structure.

4. A building material crushing and screening apparatus as claimed in claim 3, characterized in that One end of the connecting force arm (604) passes through the rectangular opening of the base (5) and is arranged; The third support (606) is arranged on the base (5).

5. A building material crushing and screening apparatus as claimed in claim 4, characterized in that Further comprising a dustproof mechanism (7), the dustproof mechanism (7) comprises a covering bin (708), a fourth support (701), a third driving motor (705), a connecting support (702), a gear (704) and a synchronous belt (707), the fourth support (701) is arranged outside the box (1), the fourth support (701) is provided with the connecting support (702), the second rotating shaft in the connecting groove (703) of the connecting support (702) is provided with the gear (704), and the gear (704) is meshed and connected with the rack (710) on the covering bin (708); The covering bin (708) is a cylindrical cavity structure with open ends, and the covering bin (708) is movably connected with the sliding groove on the inner wall of the connecting bin (11) through the second sliding strip (709) on the outer wall.

6. A building material crushing and screening apparatus as claimed in claim 5, characterized in that One end of the second rotating shaft is connected with the first synchronous wheel (706), and the first synchronous wheel (706) is connected with the second synchronous wheel on the output shaft of the third driving motor (705) through a synchronous belt (707).

7. A building material crushing and screening apparatus as claimed in claim 1, characterized in that, The box (1) is provided with a feeding support (8) on one side, the inside of the feeding support (8) is provided with a conveying belt (9), and the feeding end of the feeding support (8) is provided with a feeding hopper (10).

8. A construction material crushing and screening apparatus as claimed in claim 1, characterized in that, The base (5) is provided with a discharge port.

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