Automatic feeding device for continuous asphalt concrete production

Abstract

The present application relates to the technical field of conveying device, especially to a continuous asphalt concrete production automatic feeding device, which comprises a conveying pipe, a motor is installed on the outer wall of the bottom end of the conveying pipe, a screw is installed on the main shaft of the motor and is rotatably inserted into the conveying pipe, a discharge port is formed on the end of the conveying pipe away from the motor, and an extrusion mechanism and a dust falling mechanism are arranged in the discharge port. The extrusion mechanism is arranged to intercept the caked raw materials, the required raw material particles pass through the sieve hole into the discharge port, the second extrusion disc is driven by the conical sieve plate to move back and forth, so that when the second extrusion disc approaches the first extrusion disc, the caked raw materials intercepted by the conical sieve plate can be extruded and broken, the effect of treating the caked raw materials before mixing is realized, the situation that the mixing of caked raw materials affects the uniformity of asphalt concrete is avoided, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of conveying devices, in particular to an automatic feeding device for continuous asphalt concrete production. BACKGROUND

[0002] Asphalt concrete is one of the common infrastructure materials for highway paving. In the preparation process of asphalt concrete, a variety of materials need to be mixed. The feeding device is used to convey various raw materials such as asphalt, aggregate, and filler to the asphalt mixture mixing equipment. This kind of conveying device can ensure the continuity and efficiency of the asphalt concrete production process. The filler is generally a mineral powder with a specified particle size.

[0003] However, the mineral powder may clog during storage. The existing technology cannot break the clogs during feeding, which affects the mixing ratio of asphalt concrete. SUMMARY

[0004] The purpose of the present application is to solve the shortcomings of the prior art and provide an automatic feeding device for continuous asphalt concrete production. The present application is provided with an extrusion mechanism. The clogged raw materials are intercepted by the conical sieve plate. The raw material particles meeting the requirements pass through the sieve hole into the discharge port. The second extrusion disc is driven by the conical sieve plate to move back and forth. When the second extrusion disc approaches the first extrusion disc, the clogs intercepted by the conical sieve plate are crushed. The effect of treating the raw material clogs before mixing is achieved. The uneven mixing of raw material clogs does not affect the asphalt concrete mixing ratio, improving the practicality of the device.

[0005] In order to achieve the above object, the present application adopts the following technical scheme: a continuous asphalt concrete production automatic feeding device, comprising a conveying pipe, a motor is installed on the bottom end outer wall of the conveying pipe, a screw rod rotatingly inserted into the conveying pipe is installed on the main shaft of the motor, a discharge port is formed on the end of the conveying pipe away from the motor, an extrusion mechanism and a dust falling mechanism are arranged in the discharge port, the extrusion mechanism comprises a second extrusion disc, a first extrusion disc is welded on the end outer wall of the screw rod close to the discharge port, a transmission shaft is installed on the end wall center of the first extrusion disc, the second extrusion disc is slidingly sleeved on the outer wall of the transmission shaft, the transmission shaft is provided with limiting blocks distributed in the axial direction on the outer wall, limiting grooves for inserting the limiting blocks are formed on the outer wall of the second extrusion disc, a conical sieve plate is fixed on the outer wall of the second extrusion disc, the large end surface of the conical sieve plate is away from the first extrusion disc and close to the inner wall of the conveying pipe, a support is fixed on the inner wall of the discharge port, a stroke groove is formed on the inner wall of the support, a supporting rod is welded on the end outer wall of the conical sieve plate close to the discharge port, a push rod slidingly inserted into the stroke groove is installed on the end wall of the supporting rod, the raw material agglomerates are intercepted by the conical sieve plate, when the screw rod drives the conical sieve plate to rotate, the push rod reciprocates in the stroke groove, the raw material agglomerates between the first extrusion disc and the second extrusion disc are extruded, the dust falling mechanism comprises a first piston, a first plug cylinder and a second plug cylinder are formed on the outer wall of the discharge port and are in communication with each other, the first piston is slidingly inserted into the first plug cylinder, a first bevel gear disc is fixed on the outer wall of the supporting rod, a second bevel gear disc is slidingly sleeved on the outer wall of the supporting rod and buckled with the first bevel gear disc, an extension rod extending into the second plug cylinder is welded on the outer wall of the second bevel gear disc, a sealing block slidingly inserted into the second plug cylinder is welded on the end outer wall of the extension rod in the second plug cylinder, a sliding rod is slidingly inserted into the outer wall of the sealing block, and a second piston slidingly inserted into the second plug cylinder is installed on the end wall of the sliding rod.

[0006] Preferably, the conveying pipe is provided with a feeding port on the top outer wall of the end close to the motor.

[0007] Preferably, the outer wall of the conical sieve plate is provided with a plurality of scraping plates distributed at equal intervals in the circumference, a plurality of extrusion plates distributed at equal intervals in the circumference are welded on the outer wall of the first extrusion disc, and the extrusion plates are located in the intervals of the scraping plates.

[0008] Preferably, the end wall of the first piston is fixed with a plug rod rotatingly sleeved on the end wall of the supporting rod.

[0009] Preferably, an air suction port in communication with the discharge port is formed on the inner wall of the first plug cylinder, an air exhaust port in communication with the cloth bag is formed on the inner wall of the first plug cylinder, ball plugs are slidingly inserted into the inner walls of the air suction port and the air exhaust port, and a third spring is installed between the outer wall of each ball plug and the inner wall of the air suction port or the air exhaust port.

[0010] Preferably, a first spring is arranged between the outer wall of the extension rod and the outer wall of the support.

[0011] Preferably, the sealing block is tightly attached to the first piston.

[0012] Preferably, a second spring is arranged between the outer wall of the end of the slide rod away from the second piston and the outer wall of the sealing block.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1、The extrusion mechanism is arranged, so that the caked raw materials are intercepted by the conical sieve plate, the raw material particles meeting the requirements pass through the sieve hole into the discharge port, and when the second extrusion disc reciprocates driven by the conical sieve plate, the caked raw materials intercepted by the conical sieve plate can be crushed when the second extrusion disc approaches the first extrusion disc, so that the effect of treating the raw material caking during the feeding process before mixing is achieved, the situation that the mixing of raw material caking affects the asphalt concrete proportioning due to unevenness is avoided, and the practicality of the device is improved.

[0015] 2、The dust falling mechanism is arranged, so that when the push rod reciprocates, the first piston reciprocates in the first plug cylinder, so that when the first piston is away from the discharge port, the dust generated when the material falls in the discharge port is sucked into the first plug cylinder through the air suction port, and when the first piston approaches the discharge port, the gas containing dust is extruded into the cloth bag through the air outlet for filtration, so that the effect of reducing dust and recycling raw materials is achieved.

[0016] 3、The first bevel gear plate and the second bevel gear plate cannot be reset and buckled when the screw rotation speed increases, so that the second plug cylinder maintains the state of internal space volume expansion, and then when the first piston reciprocates, the gas can enter the first plug cylinder and the second plug cylinder, so that the effect of increasing the air suction amount is achieved, and then the device can automatically control the dust suction force according to the dust possibility, and the automation degree is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic view of the overall mechanism of the present application;

[0018] Figure 2 It is a plane section view schematic view of the overall structure of the present application;

[0019] Figure 3 It is an enlarged schematic view of the structure at A of the present application; Figure 2

[0020] Figure 4 It is a three-dimensional schematic view of the conical sieve plate of the present application; ​

[0021] Figure 5 It is a perspective view of the lever of the application;

[0022] Figure 6 It is a perspective view of the second bevel gear disc of the application;

[0023] Figure 7 It is a perspective view of the sealing block of the application;

[0024] Figure 8 It is a perspective view of the first plug cylinder of the application;

[0025] Figure 9 It is a perspective view of the stroke groove of the application.

[0026] Legend:

[0027] 1, conveying pipe; 11, feed inlet; 12, discharge outlet; 13, support; 131, stroke groove; 15, first plug cylinder; 151, air outlet; 152, exhaust port; 153, cloth bag; 154, ball plug; 155, third spring; 16, second plug cylinder; 2, motor; 21, screw; 22, first extrusion disc; 23, extrusion plate; 24, transmission shaft; 241, limiting block; 3, conical sieve plate; 31, second extrusion disc; 32, scraper; 33, limiting groove; 34, support rod; 35, first bevel gear disc; 4, lever; 5, first piston; 51, plug rod; 6, second bevel gear disc; 61, extension rod; 62, first spring; 63, sealing block; 64, second piston; 65, slide rod; 66, second spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme of the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the protection of the application.

[0029] Referring to Figures 1 to 9 shown, an automatic feeding device for continuous asphalt concrete production, comprising a conveying pipe 1, a motor 2 is installed on the outer wall of the bottom end of the conveying pipe 1, a screw 21 is installed on the main shaft of the motor 2 and is rotatably inserted into the conveying pipe 1, a discharge outlet 12 is formed on the end of the conveying pipe 1 away from the motor 2, an extrusion mechanism and a dust reduction mechanism are arranged in the discharge outlet 12, and a feed inlet 11 is arranged on the top outer wall of the end of the conveying pipe 1 close to the motor 2;

[0030] The extrusion mechanism comprises a second extrusion disc 31, a first extrusion disc 22 welded to the outer wall of one end of the screw rod 21 close to the discharge port 12, a transmission shaft 24 installed at the center of the end wall of the first extrusion disc 22, the second extrusion disc 31 slidingly sleeved on the outer wall of the transmission shaft 24, the outer wall of the transmission shaft 24 being provided with limiting blocks 241 distributed in the axial direction, the outer wall of the second extrusion disc 31 being provided with limiting grooves 33 for inserting the limiting blocks 241, the outer wall of the second extrusion disc 31 being fixed with a conical sieve plate 3, the large end face of the conical sieve plate 3 being away from the first extrusion disc 22 and closely attached to the inner wall of the conveying pipe 1, the inner wall of the discharge port 12 being fixed with a bracket 13, the inner wall of the bracket 13 being provided with a stroke groove 131, the outer wall of one end of the conical sieve plate 3 close to the discharge port 12 being welded with a support rod 34, the end wall of the support rod 34 being installed with a push rod 4 slidingly inserted into the stroke groove 131, the raw material agglomerates being intercepted by the conical sieve plate 3, when the screw rod 21 drives the conical sieve plate 3 to rotate, the push rod 4 reciprocates in the stroke groove 131, the raw material agglomerates between the first extrusion disc 22 and the second extrusion disc 31 are extruded, the outer wall of the conical sieve plate 3 is provided with a plurality of scraping plates 32 distributed at equal intervals in the circumferential direction, and the outer wall of the first extrusion disc 22 is welded with a plurality of extrusion plates 23 distributed at equal intervals in the circumferential direction, the extrusion plates 23 being located in the intervals of the scraping plates 32.

[0031] It should be noted that the stroke groove 131 is a circular ring-shaped sliding groove inclined to the axis of the conveying pipe 1, so that when the push rod 4 rotates, it reciprocates along the axis direction of the conveying pipe 1.

[0032] The motor 2 drives the screw rod 21 to rotate, transporting the raw materials at the feeding port 11 to the high discharge port 12, the agglomerated raw materials being intercepted by the conical sieve plate 3, the raw material particles meeting the requirements entering the discharge port 12 through the sieve holes, under the action of the limiting blocks 241 and the limiting grooves 33, the screw rod 21 drives the conical sieve plate 3 to rotate synchronously, so that the conical sieve plate 3 drives the push rod 4 to rotate along the stroke groove 131, so that the push rod 4 drives the conical sieve plate 3 to reciprocate along the axis direction of the conveying pipe 1, the conical sieve plate 3 drives the second extrusion disc 31 to reciprocate, so that when the second extrusion disc 31 approaches the first extrusion disc 22, the agglomerates intercepted by the conical sieve plate 3 can be extruded and broken, achieving the effect of treating the raw material agglomerates during the feeding process before mixing, avoiding the situation that the mixing of raw material agglomerates affects the proportioning of asphalt concrete due to unevenness, and improving the practicability of the device.

[0033] Meanwhile, the scraper 32 is arranged to scrape the agglomerates of the raw material under the first extrusion disc 22 and the second extrusion disc 31, and when the conical screen plate 3 rotates upwards, the agglomerates can slide along the slope of the conical screen plate 3 to the space between the first extrusion disc 22 and the second extrusion disc 31 when the agglomerates are driven by the conical screen plate 3 to rotate above the second extrusion disc 31, so that the agglomerates can be crushed under pressure, thereby avoiding the situation of extrusion dead angle and improving the completeness of the agglomerate treatment.

[0034] When the inside of the conveying pipe 1 is filled with the raw material, the agglomerates can be prevented from falling down due to the lack of space, and the agglomerates can be inserted into the space between the scraper 32 and the scraper 32, so that the extrusion plate 23 on the first extrusion disc 22 can be inserted into the space between the scrapers 32 when the conical screen plate 3 reciprocates, thereby further improving the effect of the agglomerate treatment and the practicability of the device.

[0035] In addition, the connecting mode between the supporting rod 34 and the push rod 4 can be quick release or adjustable, so that the length of the push rod 4 can be replaced or adjusted before work, thereby adjusting the distance between the second extrusion disc 31 and the first extrusion disc 22, and adjusting the particle size of the crushed particles, so that the device can meet the feeding work of raw materials with different particle sizes, improve the practicability of the device, and further avoid the situation that the prior art cannot decompose the agglomerates during feeding.

[0036] The dust falling mechanism comprises a first piston 5, a first plug cylinder 15 and a second plug cylinder 16 which are communicated with each other and are formed in the outer wall of the discharge port 12, the first piston 5 is slidingly inserted into the first plug cylinder 15, a plug rod 51 which is rotatably sleeved on the end wall of a support rod 34 is fixed on the end wall of the first piston 5, a first bevel gear disc 35 is fixed on the outer wall of the support rod 34, a gas suction port 151 which is communicated with the discharge port 12 is formed in the inner wall of the first plug cylinder 15, a gas discharge port 152 which is communicated with a cloth bag 153 is formed in the inner wall of the first plug cylinder 15, a ball plug 154 is slidingly inserted into the gas suction port 151 and the gas discharge port 152, a third spring 155 is arranged between the outer wall of each ball plug 154 and the inner wall of the corresponding gas suction port 151 or gas discharge port 152, a second bevel gear disc 6 which is buckled with the first bevel gear disc 35 is slidingly sleeved on the outer wall of the support rod 34, an extension rod 61 which extends into the second plug cylinder 16 is welded on the outer wall of the second bevel gear disc 6, a first spring 62 is arranged between the outer wall of the extension rod 61 and the outer wall of the support frame 13, a sealing block 63 which is slidingly inserted into the second plug cylinder 16 is welded on the outer wall of one end of the extension rod 61 which is located in the second plug cylinder 16, the sealing block 63 is tightly combined with the first piston 5, a sliding rod 65 is slidingly inserted into the outer wall of the sealing block 63, a second piston 64 which is slidingly inserted into the second plug cylinder 16 is arranged on the end wall of the sliding rod 65, a second spring 66 is arranged between the outer wall of one end of the sliding rod 65 which is away from the second piston 64 and the outer wall of the sealing block 63.

[0037] It should be noted that the thickness of the second piston 64 is not less than the displacement length of the first piston 5, so as to ensure that the first piston 5 will not be separated from the second piston 64 when the first piston 5 moves, and further ensure the sealing performance of the first plug cylinder 15 and the second plug cylinder 16, under the action of the ball plug 154 and the third spring 155, the gas can only enter the gas discharge port 152 from the gas suction port 151.

[0038] When the push rod 4 reciprocally moves, the first piston 5 reciprocally moves in the first plug cylinder 15, so that when the first piston 5 is away from the discharge port 12, the dust generated when the material falls in the discharge port 12 is sucked into the first plug cylinder 15 through the gas suction port 151, when the first piston 5 is close to the discharge port 12, the gas containing the dust is squeezed into the cloth bag 153 through the gas discharge port 152 for filtration, so as to realize the effect of reducing the dust and recycling the raw material.

[0039] In addition, when the feeding speed is fast, the amount of material falling from the discharge port 12 per unit time increases, and more dust is generated. By setting the first bevel gear plate 35 and the second bevel gear plate 6, when the motor 2 drives the screw rod 21 to rotate rapidly to increase the feeding speed, the screw rod 21 drives the conical sieve plate 3 to rotate rapidly, so that the conical sieve plate 3 drives the first bevel gear plate 35 to rotate rapidly. At this time, the first bevel gear plate 35 continuously and rapidly pushes the second bevel gear plate 6 to slide to the side where the first piston 5 is located, so that the second bevel gear plate 6 cannot be reset under the action of the second spring 66, thereby making the second bevel gear plate 6 continuously maintain the posture away from the first bevel gear plate 35. The second bevel gear plate 6 pushes the sealing block 63 to slide away from the discharge port 12 side through the extension rod 61, so that the second cylinder 16 maintains the state of expanding the internal space volume, thereby enabling the gas to enter the first cylinder 15 and the second cylinder 16 when the first piston 5 reciprocates, thereby achieving the effect of increasing the air volume, and further improving the degree of automation. The screening and extrusion of the agglomerates are both completed in the interior of the conveying pipe 1, which also greatly reduces the generation of dust. When the first piston 5 returns, it will push the second piston 64 to move together, so that the gas in the first cylinder 15 and the second cylinder 16 can be compressed into the cloth bag 153.

[0040] Working principle: Before work, move the discharge port 12 of the device above the feeding port of the mixing device, add raw materials from the feeding port 11 into the conveying pipe 1, and adjust the length of the lever 4 by replacing or adjusting it, thereby adjusting the distance between the second extrusion plate 31 and the first extrusion plate 22, and adjusting the particle size of the extruded and broken particles.

[0041] When working, under the action of the extrusion mechanism, start the motor 2 to drive the screw rod 21 to rotate, transport the raw materials at the feeding port 11 to the high discharge port 12, and intercept the agglomerates of the raw materials by the conical sieve plate 3. The required raw material particles pass through the sieve hole into the discharge port 12, and the conical sieve plate 3 drives the second extrusion plate 31 to reciprocate, so that when the second extrusion plate 31 approaches the first extrusion plate 22, the agglomerates intercepted by the conical sieve plate 3 can be extruded and broken, thereby achieving the effect of treating the agglomerates during the feeding process before mixing.

[0042] In addition, when there are more raw materials in the conveying pipe 1, the raw materials fill the inner cavity of the conveying pipe 1, and at this time, the extrusion plate 23 on the first extrusion plate 22 can be inserted into the interval between the scrapers 32 when the conical sieve plate 3 reciprocates, so that the agglomerates are extruded, avoiding the existence of extrusion dead angles.

[0043] Meanwhile, under the action of the dust removal mechanism, the first piston 5 reciprocates in the first cylinder 15 when the push rod 4 reciprocates, so that when the first piston 5 is away from the discharge port 12, the dust generated when the material falls in the discharge port 12 is sucked into the first cylinder 15 through the air inlet 151, and when the first piston 5 is close to the discharge port 12, the gas containing dust is squeezed into the cloth bag 153 through the air outlet 152 for filtration, realizing the effect of reducing dust and recycling the raw materials.

[0044] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An automatic feeding device for continuous asphalt concrete production, comprising a conveying pipe (1), characterized in that: a motor (2) is installed on the outer wall of the bottom end of the conveying pipe (1), a screw rod (21) is installed on the main shaft of the motor (2) and rotatably inserted into the conveying pipe (1), a discharging port (12) is formed at the end of the conveying pipe (1) away from the motor (2), and an extrusion mechanism and a dust falling mechanism are arranged in the discharging port (12). The extrusion mechanism comprises a second extrusion disc (31), a first extrusion disc (22) is welded on the outer wall of the end of the screw rod (21) close to the discharging port (12), a transmission shaft (24) is installed on the end wall of the first extrusion disc (22), the second extrusion disc (31) is slidably sleeved on the outer wall of the transmission shaft (24), the outer wall of the transmission shaft (24) is provided with limiting blocks (241) distributed in the axial direction, limiting grooves (33) for inserting the limiting blocks (241) are formed in the outer wall of the second extrusion disc (31), a conical sieve plate (3) is fixed on the outer wall of the second extrusion disc (31), the large end face of the conical sieve plate (3) is away from the first extrusion disc (22) and closely adheres to the inner wall of the conveying pipe (1), a bracket (13) is fixed on the inner wall of the discharging port (12), a stroke groove (131) is formed in the inner wall of the bracket (13), a support rod (34) is welded on the outer wall of the end of the conical sieve plate (3) close to the discharging port (12), and a push rod (4) is slidably inserted into the stroke groove (131) and installed on the end wall of the support rod (34). The raw material agglomerates are intercepted by the conical sieve plate (3), when the screw rod (21) drives the conical sieve plate (3) to rotate, the raw material agglomerates between the first extrusion disc (22) and the second extrusion disc (31) are extruded by the reciprocating movement of the push rod (4) in the stroke groove (131). The dust falling mechanism comprises a first piston (5), a first plunger cylinder (15) and a second plunger cylinder (16) are formed in the outer wall of the discharging port (12) and are in communication with each other, the first piston (5) is slidably inserted into the first plunger cylinder (15), a first bevel gear disc (35) is fixed on the outer wall of the support rod (34), a second bevel gear disc (6) is slidably sleeved on the outer wall of the support rod (34) and is buckled with the first bevel gear disc (35), an extension rod (61) is welded on the outer wall of the second bevel gear disc (6) and extends into the second plunger cylinder (16), a sealing block (63) is slidably inserted into the second plunger cylinder (16) and is welded on the outer wall of the end of the extension rod (61) located in the second plunger cylinder (16), a sliding rod (65) is slidably inserted into the outer wall of the sealing block (63), and a second piston (64) is slidably inserted into the second plunger cylinder (16) and is installed on the end wall of the sliding rod (65). An inlet port (11) is arranged on the top outer wall of the end of the conveying pipe (1) close to the motor (2).

2. The automatic feeding device for continuous asphalt concrete production according to claim 1, characterized in that: ​ 3. The automatic feeding device for continuous asphalt concrete production according to claim 1, characterized in that: The outer wall of the conical sieve plate (3) is provided with a plurality of scraping plates (32) distributed at equal intervals in a circle, and the outer wall of the first extrusion disc (22) is welded with a plurality of extrusion plates (23) distributed at equal intervals in a circle, the extrusion plates (23) being located in the intervals of the scraping plates (32).

4. The automatic feeding device for continuous asphalt concrete production according to claim 1, characterized in that: The end wall of the first piston (5) is fixed with a plug rod (51) rotatably sleeved on the end wall of a supporting rod (34).

5. The automatic feeding device for continuous asphalt concrete production according to claim 4, characterized in that: The inner wall of the first plug cylinder (15) is provided with a gas extraction port (151) communicated with the discharge port (12), and is provided with a gas discharge port (152) communicated with a cloth bag (153), and the inner walls of the gas extraction port (151) and the gas discharge port (152) are slidably inserted with ball plugs (154), and the outer wall of each ball plug (154) is mounted with a third spring (155) between the inner wall of the gas extraction port (151) or the gas discharge port (152).

6. The automatic feeding device for continuous asphalt concrete production according to claim 4, characterized in that: The outer wall of the extension rod (61) is provided with a first spring (62) between the outer wall of the support (13).

7. The automatic feeding device for continuous asphalt concrete production according to claim 6, characterized in that: The sealing block (63) is tightly attached to the first piston (5).

8. The automatic feeding device for continuous asphalt concrete production according to claim 7, characterized in that: The outer wall of the end of the sliding rod (65) away from the second piston (64) is mounted with a second spring (66) between the outer wall of the sealing block (63).

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