Novel aggregate pre-screening and discharging device

Abstract

The utility model discloses a novel aggregate pre-screening and discharging device which comprises a lifting conveying belt, three pre-screening machines and a discharging conveying belt, the number of the pre-screening machines is three, feeding ports of the pre-screening machines are connected with discharging ports of the corresponding lifting conveying belt, and each pre-screening machine comprises a screening mechanism and a vibrating mechanism which are installed on a pre-screening machine supporting frame. The screening mechanism comprises a screen mesh outer frame, a screen mesh assembly, a side discharging cavity and a bottom discharging cavity, the screen mesh assembly is installed in the screen mesh outer frame, the vibrating mechanism drives the screen mesh outer frame and the screen mesh assembly to achieve vibrating screening operation of aggregate, and the side discharging cavity is installed on the discharging side of the screen mesh assembly; the bottom discharging cavity is installed below the screen assembly, the unpowered powder selecting device is installed below the bottom discharging cavity, and a discharging port of the side discharging cavity and a discharging port of the unpowered powder selecting device are both connected with the discharging conveying belt. The device has the advantages of being reasonable in design, safe, efficient and good in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of aggregate production, in particular to a novel aggregate pre-screening and discharging device. Background Art

[0002] In the production process of building aggregates, the aggregates after medium and fine crushing need to be transported to the pre-screening workshop for processing, and then transported to the shaping sand making workshop and the screening workshop for further processing to obtain products. In the prior art, the layout and function of the pre-screening discharging device are single, and the structure and layout need to be improved to better meet production needs. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a screening production device which has reasonable design, safety, high efficiency and good applicability.

[0004] In order to achieve the above-mentioned invention object, the utility model provides the following technical solutions:

[0005] A novel aggregate pre-screening and discharging device comprises a lifting conveyor belt, a pre-screening machine and a discharging conveyor belt. The number of the pre-screening machines is three and they are divided into a first pre-screening machine, a second pre-screening machine and a third pre-screening machine. The three pre-screening machines are installed in parallel on a pre-screening machine support frame. The feed ports of the three pre-screening machines are connected to the discharge ports of the corresponding lifting conveyor belts. The three pre-screening machines all comprise a screening mechanism and a vibration mechanism. The screening mechanism and the vibration mechanism are both installed on the pre-screening machine support frame. The screening mechanism comprises a screen outer frame, a screen assembly, a side discharge cavity and a bottom discharge cavity. The screen assembly is installed in the screen outer frame and the screen outer frame and the screen assembly are driven by the vibration mechanism to realize the vibration screening operation of the aggregate. The side discharge cavity is installed on the discharge side of the screen assembly, the bottom discharge cavity is installed below the screen assembly, an unpowered powder selection device is installed below the bottom discharge cavity, and the discharge port of the side discharge cavity and the discharge port of the unpowered powder selection device are both connected to the discharging conveyor belt.

[0006] Preferably, there are two lifting conveyor belts, which are divided into a first lifting conveyor belt and a second lifting conveyor belt. The discharge port of the first lifting conveyor belt is connected to the feed section of the first pre-screening machine through the guide groove of the first discharge bin, and the discharge port of the second lifting conveyor belt is connected to the feed section of the second pre-screening machine and the feed section of the third pre-screening machine through the two guide grooves of the second discharge bin.

[0007] Preferably, the outer side of the screen frame is tiltedly mounted on the pre-screening machine support frame through a spring-supported shock-absorbing device.

[0008] Preferably, the screen assembly includes a top outer cover, an upper screen, a middle screen, and a lower screen arranged on the screen outer frame from top to bottom, the top outer cover is provided with a feed channel, the side discharge cavity includes a first discharge cavity arranged at the side discharge end of the upper screen and a second discharge cavity arranged at the side discharge end of the lower screen, and a non-powered powder selection device is arranged below the bottom discharge cavity of the three pre-screening machines.

[0009] Preferably, a dust suction channel is provided in the middle of the top outer cover, and the dust suction channel is connected to the dust removal system through a pipeline.

[0010] Preferably, the number of the discharging conveyor belts is five and they are divided into a first discharging conveyor belt, a second discharging conveyor belt, a third discharging conveyor belt, a fourth discharging conveyor belt and a powder selection device discharging conveyor belt. The discharging channel of the first discharging chamber is connected with the feeding section of the first discharging conveyor belt, the discharging section of the first discharging conveyor belt is connected with the feeding section of the third discharging conveyor belt, the third discharging conveyor belt transports the aggregate to the fine crushing workshop for recycling processing, the discharging channel of the second discharging chamber is connected with the feeding section of the second discharging conveyor belt, the discharging section of the second discharging conveyor belt is connected with the feeding section of the fourth discharging conveyor belt, the fourth discharging conveyor belt transports the aggregate to the shaping workshop for processing, the feeding section of the powder selection device discharging conveyor belt is connected with the discharging port of the unpowered powder selection device, and the powder selection device discharging conveyor belt transports the aggregate to the finished product inventory for storage.

[0011] Preferably, the first discharging chamber is divided into an upper discharging chamber and a lower discharging chamber by a middle partition, the upper discharging chamber is provided with an upper discharging channel, and the lower discharging chamber is provided with a lower discharging channel, the upper discharging channel is connected to the feed section of the first discharging conveyor belt, and the lower discharging channel is connected to the feed section of the second discharging conveyor belt, a switch plate is hingedly provided in the upper discharging chamber, a transfer discharging port is provided on the middle partition, and a cylinder push rod assembly is installed on the outer side of the upper discharging chamber, the cylinder push rod assembly includes a driving cylinder and a push rod, the cylinder shaft of the driving cylinder is connected to the push rod, and the other end of the push rod is in movably contact with the switch plate, and the driving cylinder drives the switch plate to rotate upward to the transfer discharging port or downward away from the transfer discharging port through the push rod, so as to realize the closing or opening operation of the upper discharging channel.

[0012] Preferably, the vibration mechanism includes two pre-screening machine vibration devices installed in the middle of the screen frame, and the two pre-screening machine vibration devices each include a drive motor and a transmission mechanism, and the drive motor realizes synchronous vibration screening operation of the screen frame and the screen assembly through the transmission mechanism.

[0013] Preferably, the pre-screening machine is arranged in a closed workshop body, the discharge ports of the two lifting conveyor belts are located in the workshop body, and mobile iron removers are horizontally installed on the workshop body above the three pre-screening machines.

[0014] Preferably, the feeding sections of the first and third discharging conveyor belts are located inside the main body of the workshop, the feeding sections of the second and fourth discharging conveyor belts are located inside the main body of the workshop, and the discharging sections of the third and fourth discharging conveyor belts are located outside the main body of the workshop.

[0015] Beneficial effects of the utility model:

[0016] 1. The overall design is reasonable. The inlet and outlet of the three pre-screening machines are matched with the medium crushing, fine crushing and shaping processing operations, which is convenient for continuous production, with high work efficiency and good product quality;

[0017] 2. The structure and inlet and outlet of the pre-screening machine are optimized, which has the positive effects of safety, environmental protection, easy operation and stable operation.

[0018] 3. Improve the design of the first discharge chamber, close or open the upper discharge channel through the cylinder push rod assembly and the switch plate, and improve the applicability of the equipment and subsequent processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a right view of a novel aggregate pre-screening and discharging device of the utility model;

[0020] Figure 2 This is a structural diagram of a pre-screening machine of a novel aggregate pre-screening and discharging device of the utility model;

[0021] Figure 3 This is a front view of a novel aggregate pre-screening and discharging device of the utility model;

[0022] Figure 4 It is a top view of a novel aggregate pre-screening and discharging device of the utility model;

[0023] In the figure: 1-workshop body, 10-discharging conveyor belt mounting seat, 2-lifting conveyor belt, 21-discharging port of the first lifting conveyor belt, 22-discharging port of the second lifting conveyor belt, 3-iron remover, 4-pre-screening machine support frame, 5-pre-screening machine, 5a-first pre-screening machine, 5b-second pre-screening machine, 5c-third pre-screening machine, 51-upper screen, 52-middle screen, 53-lower screen, 54-first discharging cavity, 55-second discharging cavity Cavity, 540-middle partition, 541-transfer discharge port, 542-switch plate, 543-cylinder push plate assembly, 56-bottom discharge cavity, 57-unpowered powder selection device, 6-spring supported shock absorbing device, 7-first pre-screening machine vibration device, 71-second pre-screening machine vibration device, 8-first discharge conveyor belt, 81-second discharge conveyor belt, 82-powder selection device discharge conveyor belt, 83-third discharge conveyor belt, 84-fourth discharge conveyor belt. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1-4 As shown, the utility model provides a novel aggregate pre-screening and discharging device, including a lifting conveyor belt 2, a pre-screening machine 5 and a discharging conveyor belt. The number of the pre-screening machines 5 is three and they are divided into a first pre-screening machine 5a, a second pre-screening machine 5b and a third pre-screening machine 5c. The three pre-screening machines are installed in parallel on the pre-screening machine support frame 4. The number of the lifting conveyor belts 2 is two and they are divided into a first lifting conveyor belt and a second lifting conveyor belt. The discharging port 21 of the first lifting conveyor belt is connected to the feeding section of the first pre-screening machine 5a through the guide groove of the first discharging bin, and the discharging port 22 of the second lifting conveyor belt is connected to the feeding section of the second pre-screening machine 5b and the feeding section of the third pre-screening machine 5c through the two guide grooves of the second discharging bin. The three pre-screening machines all include The present invention comprises a screening mechanism and a vibration mechanism, both of which are installed on a pre-screening machine support frame 4, the screening mechanism comprises a screen outer frame, a screen assembly, a side discharge cavity and a bottom discharge cavity 56, the side discharge cavity is installed on the discharge side of the screen assembly, the bottom discharge cavity 56 is installed below the screen assembly, and a non-powered powder selection device 57 is installed below the bottom discharge cavity 56, the outer side of the screen outer frame is tiltedly installed on the pre-screening machine support frame 4 through a spring-supported shock absorbing device 6, the screen assembly is installed in the screen outer frame and driven by the vibration mechanism to continuously vibrate the screen outer frame, thereby realizing the vibration screening operation of the screen assembly on the aggregate, the discharge port of the side discharge cavity and the discharge port of the non-powered powder selection device 57 are both connected to the discharge conveyor belt.

[0026] Specifically, the screen assembly includes a top outer cover, an upper screen 51, a middle screen 52, and a lower screen 53 which are arranged on the screen outer frame from top to bottom. A feed channel is arranged on the top outer cover, a dust suction channel is arranged in the middle of the top outer cover, and the dust suction channel is connected to the dust removal system through a pipeline. A first discharge cavity 54 is arranged at the discharge end of the upper screen 51 for screening the material and a second discharge cavity 55 is arranged at the discharge end of the lower screen 53 for screening the material. The material under the lower screen 53 falls into the bottom discharge cavity 56, and an unpowered powder selection device 57 is arranged below the bottom discharge cavity 56 of the three pre-screening machines.

[0027] Specifically, the number of the discharge conveyor belts is five and they are divided into a first discharge conveyor belt 8, a second discharge conveyor belt 81, a third discharge conveyor belt 83, a fourth discharge conveyor belt 84 and a powder selection device discharge conveyor belt 82. The first discharge conveyor belt 8 and the second discharge conveyor belt 81 are both horizontally arranged on the discharge conveyor belt mounting seat 10, the third discharge conveyor belt 83 is located below the first discharge conveyor belt 8, and the fourth discharge conveyor belt 84 is located below the second discharge conveyor belt 81. The discharge channel of the first discharge cavity 54 is connected to the feeding section of the first discharge conveyor belt 8. The discharging section is connected to the feeding section of the third discharging conveyor belt 83, and the third discharging conveyor belt 83 transports the aggregate to the fine crushing workshop for circulation processing. The discharging channel of the second discharging chamber 55 is connected to the feeding section of the second discharging conveyor belt 81, and the discharging section of the second discharging conveyor belt 81 is connected to the feeding section of the fourth discharging conveyor belt 84, and the fourth discharging conveyor belt 84 transports the aggregate to the shaping workshop for processing. The feeding section of the powder selection device discharging conveyor belt 82 is connected to the discharging port of the unpowered powder selection device 57, and the powder selection device discharging conveyor belt 82 transports the aggregate to the finished product inventory for storage.

[0028] Furthermore, the first discharge chamber 54 is divided into an upper discharge chamber and a lower discharge chamber by a middle partition 540. The upper discharge chamber is provided with an upper discharge channel, and the lower discharge chamber is provided with a lower discharge channel. A switch plate 542 is hingedly provided in the upper discharge chamber, and a transfer discharge port 541 is provided on the middle partition 540. A cylinder push rod assembly is installed on the outer side of the upper discharge chamber. The cylinder push rod assembly includes a driving cylinder and a push rod. The cylinder shaft of the driving cylinder is connected to the push rod, and the other end of the push rod is in active contact with the switch plate 542. The switch plate 542 is driven to rotate upward by the cylinder shaft of the driving cylinder and the push rod, so that the aggregates in the upper discharge chamber all fall out from the transfer discharge port 541. The aggregate enters the lower discharging chamber and is then sent out through the lower discharging channel. The cylinder shaft of the driving cylinder and the push rod drive the switch plate 542 to rotate downward, and the aggregate in the upper discharging chamber is sent out through the upper discharging channel, and the aggregate in the lower discharging chamber is sent out through the lower discharging channel. The upper discharging channel is connected to the feeding section of the first discharging conveyor belt 8, so that the screened aggregate can be transported to the fine crushing workshop via the first discharging conveyor belt 8 and the third discharging conveyor belt 83 for recycling processing. The lower discharging channel is connected to the feeding section of the second discharging conveyor belt 81, so that the screened aggregate can be transported to the shaping workshop via the second discharging conveyor belt 81 and the fourth discharging conveyor belt 84 for processing. It can be understood that after the upper discharge chamber is closed by the cylinder push rod assembly, the aggregates in the upper discharge chamber and the lower discharge chamber are both sent out from the lower discharge channel. At this time, the screened material on the upper screen 51 and the screened material on the lower screen 53 are directly transported to the shaping workshop for processing.

[0029] Specifically, the vibration mechanism includes a first pre-screening machine 5a vibration device 7 and a second pre-screening machine 5b vibration device 71 installed in the middle of the screen outer frame. The two pre-screening machine vibration devices both include a driving motor and a transmission mechanism. The driving motor drives the transmission mechanism to realize the vibration of the screen frame, thereby realizing the vibration screening operation of the screen assembly on the aggregate.

[0030] Specifically, the pre-screening machine is arranged in a closed workshop body 1, the discharge ports of the two lifting conveyor belts are located in the workshop body 1, and a mobile iron remover 3 is horizontally installed in the workshop body 1 above the three pre-screening machines. Through the mobile iron remover 3, aggregates with high iron content can be adsorbed at the aggregate feed point above the pre-screening machine, reducing the wear on processing and conveying equipment in continuous production, thereby extending the service life of the equipment.

[0031] Specifically, the feeding sections of the first discharging conveyor belt 8 and the third discharging conveyor belt 83 are located inside the workshop body 1, the feeding sections of the second discharging conveyor belt 81 and the fourth discharging conveyor belt 84 are located inside the workshop body 1, and the discharging sections of the third discharging conveyor belt 83 and the fourth discharging conveyor belt 84 are located outside the workshop body 1. Based on the closed structure of the workshop body 1, the dust diffusion in the transfer process of feeding and unloading is reduced, and the air quality of the environment is improved.

[0032] It should be noted that the above embodiments are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. All equivalent modifications made on the basis of the above embodiments fall within the protection scope of the present invention.

Claims

1. A novel aggregate pre-screening and discharging device, comprising a lifting conveyor belt, a pre-screening machine and a discharging conveyor belt, characterized in that: There are three pre-screening machines, which are divided into a first pre-screening machine, a second pre-screening machine and a third pre-screening machine. The three pre-screening machines are installed in parallel on a pre-screening machine support frame. The feed ports of the three pre-screening machines are connected to the discharge ports of the lifting conveyor belt. The three pre-screening machines all include a screening mechanism and a vibration mechanism. The screening mechanism and the vibration mechanism are both installed on the pre-screening machine support frame. The screening mechanism includes a screen outer frame, a screen assembly, a side discharge cavity and a bottom discharge cavity. The screen assembly is installed in the screen outer frame and the screen outer frame and the screen assembly are driven by the vibration mechanism to realize the vibration screening operation of the aggregate. The side discharge cavity is installed on the discharge side of the screen assembly, and the bottom discharge cavity is installed below the screen assembly. A non-powered powder selection device is installed below the bottom discharge cavity, and the discharge port of the side discharge cavity and the discharge port of the non-powered powder selection device are both connected to the discharge conveyor belt.

2. A novel aggregate pre-screening and discharging device according to claim 1, characterized in that: There are two lifting conveyor belts, which are divided into a first lifting conveyor belt and a second lifting conveyor belt. The discharge port of the first lifting conveyor belt is connected to the feed section of the first pre-screening machine through the guide groove of the first discharge bin, and the discharge port of the second lifting conveyor belt is connected to the feed section of the second pre-screening machine and the feed section of the third pre-screening machine through the two guide grooves of the second discharge bin.

3. The novel aggregate pre-screening and discharging device according to claim 1 is characterized in that: The outer side of the screen mesh outer frame is tiltedly installed on the pre-screening machine support frame through a spring-supported shock-absorbing device.

4. The novel aggregate pre-screening and discharging device according to claim 1 is characterized in that: The screen assembly includes a top outer cover, an upper screen, a middle screen, and a lower screen arranged on the screen outer frame from top to bottom. The top outer cover is provided with a feed channel. The side discharge cavity includes a first discharge cavity arranged at the side discharge end of the upper screen and a second discharge cavity arranged at the side discharge end of the lower screen. An unpowered powder selection device is arranged below the bottom discharge cavity of the three pre-screening machines.

5. A novel aggregate pre-screening and discharging device according to claim 4, characterized in that: A dust suction channel is arranged in the middle of the top outer cover, and the dust suction channel is connected with the dust removal system through a pipeline.

6. A novel aggregate pre-screening and discharging device according to claim 4, characterized in that: There are five discharging conveyor belts, which are divided into a first discharging conveyor belt, a second discharging conveyor belt, a third discharging conveyor belt, a fourth discharging conveyor belt and a powder selection device discharging conveyor belt. The discharging channel of the first discharging cavity is connected to the feeding section of the first discharging conveyor belt, the discharging section of the first discharging conveyor belt is connected to the feeding section of the third discharging conveyor belt, the discharging channel of the second discharging cavity is connected to the feeding section of the second discharging conveyor belt, the discharging section of the second discharging conveyor belt is connected to the feeding section of the fourth discharging conveyor belt, and the feeding section of the powder selection device discharging conveyor belt is connected to the discharging port of the unpowered powder selection device.

7. A novel aggregate pre-screening and discharging device according to claim 6, characterized in that: The first discharging chamber is divided into an upper discharging chamber and a lower discharging chamber by a middle partition. The upper discharging chamber is provided with an upper discharging channel, and the lower discharging chamber is provided with a lower discharging channel. The upper discharging channel is connected to the feeding section of the first discharging conveyor belt, and the lower discharging channel is connected to the feeding section of the second discharging conveyor belt. A switch plate is hingedly provided in the upper discharging chamber, a transfer discharging port is provided on the middle partition, and a cylinder push rod assembly is installed on the outer side of the upper discharging chamber. The cylinder push rod assembly includes a driving cylinder and a push rod. The cylinder shaft of the driving cylinder is connected to the push rod, and the other end of the push rod is in movably contact with the switch plate.

8. The novel aggregate pre-screening and discharging device according to claim 1 is characterized in that: The vibration mechanism comprises two pre-screening machine vibration devices installed in the middle of the screen outer frame, and the two pre-screening machine vibration devices both comprise a driving motor and a transmission mechanism.

9. The novel aggregate pre-screening and discharging device according to claim 1 is characterized in that: The pre-screening machine is arranged in a closed workshop body, the discharge ports of the two lifting conveyor belts are located in the workshop body, and mobile iron removers are horizontally installed on the workshop body above the three pre-screening machines.

10. The novel aggregate pre-screening and discharging device according to claim 6 is characterized in that: The feeding sections of the first and third discharging conveyor belts are located inside the workshop body, the feeding sections of the second and fourth discharging conveyor belts are located inside the workshop body, and the discharging sections of the third and fourth discharging conveyor belts are located outside the workshop body.

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