CN118718859A - A mobile asphalt mixing station for low-temperature asphalt mixing - Google Patents

Abstract

The invention discloses a mobile asphalt mixing station for low-temperature asphalt mixing, which comprises a main box body, wherein a central through groove is formed in the middle of a top plate of the main box body, a feeding hopper is positioned right below the central through groove, the feeding hopper is positioned in the main box body, connecting support seats are fixed at the front part and the rear part of the middle parts of the bottom surfaces of left and right side plates of the feeding hopper, and a pressure sensor is arranged on the bottom surface of the connecting support seats. The air in the main box body is dried, when materials are stirred in the stirring tank, water is not basically generated in stirring, the stirring effect is guaranteed, stones are directly sensed and weighed after being poured into the feeding hopper, the accuracy of feeding quantity is guaranteed, the stones are not required to be individually weighed before feeding, the operation procedures before feeding are reduced, meanwhile, the stones are firstly poured into the asphalt filling tank, the stones are conveyed into the stirring tank through the asphalt conveying pump, continuous conveying can be achieved, the asphalt filling tank can automatically weigh the entering stones, and the early-stage weighing process is omitted.

Description

A mobile asphalt mixing station for low-temperature asphalt mixing

Technical field:

The present invention relates to the technical field of asphalt processing equipment, and more specifically to a mobile asphalt mixing station for low-temperature asphalt mixing.

Background technology:

In the existing asphalt mixing equipment, it is generally stirred at high temperature, that is, the temperature of the asphalt used reaches 150°C to 170°C. Under this temperature stirring, harmful gases in the asphalt are easily volatilized, thereby affecting the surrounding air environment. Therefore, in order to improve the environmental protection effect, cold-mixed asphalt is currently used, which only needs to be stirred with asphalt heated to 60°C. However, this type of asphalt basically cannot be mixed with water, and its ratio control requirements are high. In the existing high-temperature asphalt mixing equipment, it is stirred exposed to the outside. When the external air humidity is too high, water droplets will form on the surface of the mixing material or the inner wall of the mixing tank, which is easy to mix water into the mixing equipment, affecting the mixing effect;

At the same time, the mixed stones enter the mixing barrel directly from the feed hopper for mixing. The amount of stones cannot be known from the feed hopper. Generally, they are weighed outside before feeding and then poured into the feed hopper. However, between the weighing and pouring into the feed hopper, some stones may fall from the discharge tray, which affects the actual feed amount, causes errors, affects the subsequent mixing ratio, and thus has a certain impact on the accuracy of the subsequent discharge amount.

Moreover, it weighs the materials before feeding, which increases the feeding process and the effect is not ideal;

Similarly, in the existing asphalt mixing equipment, the asphalt used for mixing is directly poured into the mixing tank from the feed port, and the feed uniformity is poor, which affects the subsequent mixing effect, and the feed amount cannot be controlled. It can only be poured into the discharge tray after the corresponding weight is weighed externally, and the asphalt is recessed into the mixing tank through the discharge tray. During the whole process, some asphalt often leaks out of the discharge tray when pouring, affecting the accuracy of the feed amount.

Moreover, a weighing step is required before feeding, which increases the pre-feeding process and the effect is not ideal.

Summary of the invention:

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a mobile asphalt mixing station for low-temperature asphalt mixing. It dries the air in the main box and reduces the humidity of the air. It can ensure that when the material is mixed in the mixing tank, there is basically no water in the mixing process, thereby ensuring the mixing effect. After the stone is poured into the feed hopper, it is directly sensed and weighed to ensure the accuracy of the feed amount. It does not need to be weighed separately before feeding, thereby reducing the operation procedures before feeding. At the same time, it pours the asphalt into the asphalt filling tank first, and then transports it to the mixing tank through the asphalt delivery pump. It can realize continuous transportation, and its asphalt filling tank can automatically weigh the incoming asphalt, eliminating the early weighing process and improving the feeding efficiency and effect.

The solution of the present invention to solve the technical problem is:

A mobile asphalt mixing station for low-temperature asphalt mixing includes a main box body, a central through groove is formed in the middle of the top plate of the main box body, a feed hopper is located directly below the central through groove, the feed hopper is located in the main box body, and connecting support seats are fixed to the front and rear of the middle of the bottom surface of the left and right side plates of the feed hopper. A pressure sensor is installed on the bottom surface of the connecting support seat, and the base of the pressure sensor is fixed on the top surface of the corresponding transverse beam fixed in the main box body; the weight of the material discharged in the feed hopper can be sensed by the pressure sensor.

An asphalt filling tank is placed on the top surface of the bottom plate of the main box body, and first pressure sensors are fixed on the top surface of the bottom plate of the main box body below the four corners of the bottom surface of the asphalt filling tank, and the sensing connection parts at the top of the four first pressure sensors are fixed at the four corners of the bottom surface of the asphalt filling tank;

An asphalt delivery pump is fixed on the top surface of the bottom plate of the main box body on one side of the asphalt filling tank, and the input pipe of the asphalt delivery pump extends into the asphalt filling tank, and the bottom end of the input pipe is close to the top surface of the bottom plate of the asphalt filling tank;

The discharge end of the asphalt delivery pump is connected to the discharge pipe, a stirring tank is fixed on the top surface of the bottom plate of the main box body on one side of the asphalt delivery pump, and the discharge end of the discharge pipe is connected to the stirring tank;

A main feed inlet is formed in the middle of the top plate of the mixing tank, and the material drop slot of the feed hopper is located just above the main feed inlet.

At least one powder conveying device is installed in the main box at one side of the feed hopper, and the bottom surface of the end of the conveying pipe of the powder conveying device is connected to a lower discharge pipe, and the bottom end of the lower discharge pipe is connected to the stirring tank.

A protective cover shell is fixed on the top surface of the edge of the top plate of the mixing tank, an upper cover plate is fixed on the top surface of the protective cover shell, an upper transverse feed slot extending left and right is formed in the middle of the upper cover plate, an upper raised frame extending upward is formed on the top surface of the upper cover plate at the side walls around the upper transverse feed slot, the upper transverse feed slot is communicated with the main feed port, at least one powder feed hole is formed on the upper cover plate, the lower part of the lower discharge pipe is inserted into the corresponding powder feed hole, and the bottom end of the lower discharge pipe extends into the protective cover shell;

The bottom of the feed hopper is located in the upper raised frame, and the material drop channel is communicated with the upper transverse feed channel.

The front side plate and the rear side wall of the mixing tank are both arc-shaped wall plates protruding outwards, the front and rear parts of the bottom plate of the mixing tank are both arc-shaped wall plate parts protruding downwards, and the bottom surface of the bottom plate of the mixing tank between the two arc-shaped wall plate parts is formed with an elongated groove extending upwards, and the top surface of the elongated groove is an arc-shaped wall surface, and a discharge through groove is formed in the middle thereof;

A transverse rotating shaft is provided at the front and rear between the left and right plates of the stirring tank, and the transverse rotating shaft is movably connected to the left and right plates through bearings. One end of the transverse rotating shaft extends out of the left or right plate and is fixed with a transmission gear. A plurality of stirring arms are fixed on the outer wall of the transverse rotating shaft, and stirring paddles are fixed at the ends of the stirring arms. The stirring paddles cooperate with the inner side wall of the front side plate and the top surface of the bottom plate of the corresponding stirring tank.

A plurality of wear-resistant reinforcement plates are fixed on the inner side wall of the mixing tank, and all the wear-resistant reinforcement plates cover all the inner side walls of the mixing tank.

A stirring motor and a reduction gear box are fixed on the top surface of the bottom plate of the main box body on one side of the stirring tank, a driving pulley is fixed on the output shaft of the stirring motor, a transmission pulley is fixed on the input shaft of the reduction gear box, a transmission belt is tensioned on the driving pulley and the transmission pulley, and driving gears are fixed on the two output shafts of the reduction gear box, and the driving gears are meshed with corresponding transmission gears.

Side support frames are fixed to the top surfaces of the left and right ends of the long groove, and the two circular end plates are located between the two side support frames. The outer side wall of each circular end plate is close to the corresponding side support frame. The left and right ends of the upper arc-shaped material baffle plate are fixed to the inner side walls of the upper parts of the two circular end plates. The top surface of the upper arc-shaped material baffle plate is close to the top surface of the long groove and covers the discharge slot.

A rotating shaft is fixed to the middle of the circular end plate, and the rotating shaft is movably connected to the corresponding side support frame through a bearing. A discharge pushing cylinder is movably connected to the top surface of the bottom plate of the main box body on one side of the mixing tank. The end of the push rod of the discharge pushing cylinder is movably connected to one end of the rotating arm through a hinge shaft, and the other end of the rotating arm is fixed to one end of the corresponding rotating shaft extending out of the side support frame.

An asphalt filling tank is placed on the top surface of the bottom plate of the main box body, and first pressure sensors are fixed on the top surface of the bottom plate of the main box body below the four corners of the bottom surface of the asphalt filling tank, and the sensing connection parts at the top of the four first pressure sensors are fixed at the four corners of the bottom surface of the asphalt filling tank;

An asphalt delivery pump is fixed on the top surface of the bottom plate of the main box body on one side of the asphalt filling tank, and the input pipe of the asphalt delivery pump extends into the asphalt filling tank, and the bottom end of the input pipe is close to the top surface of the bottom plate of the asphalt filling tank;

The discharge end of the asphalt delivery pump is connected to the discharge pipe, and the discharge end of the discharge pipe is connected to the stirring tank.

The discharge end of the discharge pipe is connected to the feed end formed or connected on the middle side wall of the distribution pipe. The distribution pipe is located directly above the upper cover plate. A plurality of distribution pipes are connected to the bottom plate of the distribution pipe. The lower part of the distribution pipe extends out from the bottom end of the corresponding through hole on the upper cover plate and is connected to the main feed port.

A dryer is installed in the main box.

The dryer is a heat dryer or a drying machine.

The dryer is a cold dryer. In this case, a plurality of electric heating plates are fixed on the outer wall of the feed hopper, and all the electric heating plates cover the outer wall of the feed hopper, thereby ensuring that the temperature of the feed hopper is stable during cold drying and preventing water droplets from being generated on its inner wall.

Side doors that can be opened and closed are installed on the left and right sides of the main box body.

A front through groove is formed on the upper portion of the front inner side wall of the central through groove, and the front through groove is communicated with the central through groove.

A front guide plate is fixed to the top surface of the front through groove, and a front oblique wall plate extending backward and downward is formed at the rear end of the front guide plate. The upper part of the front wall plate of the feed hopper is below the front oblique wall plate, and the upper inner wall surface of the front wall plate of the feed hopper is close to or tightly attached to the lower wall surface of the front oblique wall plate.

The feed hopper includes four upper inclined wall panels extending obliquely outward and upward in four directions, the side walls of two adjacent inclined wall panels of the four inclined wall panels are formed or fixed together, the bottoms of the front and rear two inclined wall panels are formed with lower extended plate portions that are obliquely approached downward, the bottoms of the left and right two inclined wall panels are formed with vertical plate portions that extend vertically downward, the left and right side walls of the two lower extended plate portions are formed or welded to the front and rear side walls of the corresponding two vertical plate portions to form a lower extended hopper portion, and the middle part of the bottom of the lower extended hopper portion is a blanking groove.

An arc-shaped baffle is provided below the lower extension bucket portion, the arc-shaped baffle covers the blanking slot, the top surface of the arc-shaped baffle is close to the bottom end of the lower extension bucket portion, and side vertical plates are fixed or formed on the left and right sides of the arc-shaped baffle, and the side vertical plates are located on the outer sides of the corresponding vertical plate portions and are movably connected to the corresponding vertical plate portions through hinge shafts;

A connecting part is fixed in the middle of the rear side wall of the arc-shaped baffle, a connecting seat is fixed on the upper part of the rear wall surface of the inclined wall plate at the rear of the feed hopper, the connecting part of the first flipping cylinder is movably connected to the connecting seat through a hinge shaft, and the bottom end of the push rod of the first flipping cylinder is movably connected to the connecting part through a hinge shaft.

Side baffles are fixed on the left and right side walls of the central through groove, and the bottom end of the side baffle is formed with a side oblique blocking part extending obliquely toward the middle. The upper parts of the left and right oblique wall panels of the feed hopper are located below the corresponding side oblique blocking parts, and the upper inner wall surfaces of the left and right oblique wall panels are close to or tightly attached to the lower wall surfaces of the corresponding side oblique blocking parts.

The top surface of the top plate of the main box body on the left and right sides of the central through slot is fixed with guide rails extending forward and backward, the upper movable door panel is located above the two guide rails and corresponds to the central through slot, a plurality of pulleys are installed on the bottom surfaces on the left and right sides of the upper movable door panel, the pulleys are installed in the corresponding guide rails, a rear baffle is fixed on the front wall surface of the upper movable door panel, a rear oblique extension portion extending obliquely forward and downward is formed at the bottom end of the rear baffle, the upper part of the oblique wall panel at the rear of the feed hopper is located below the rear oblique extension portion, and the upper inner wall surface of the oblique wall panel at the rear of the feed hopper is close to or close to the lower wall surface of the rear oblique extension portion.

A vertical connecting plate is formed or fixed on the bottom surface of the front end of the upper movable door panel, a fixing seat is fixed on the bottom surface of the top plate of the main box body at the rear of the central through groove, a transverse pushing cylinder is fixed on the fixing seat, and the end of the push rod of the transverse pushing cylinder is connected to the vertical connecting plate.

The movable door panel on it can be moved as needed. When the feed hopper is not in use for feeding, it can cover the central slot, and the rear baffle covers the front slot, making it difficult for foreign objects to enter the feed hopper, thereby ensuring the subsequent normal use of the feed hopper. When feeding is needed, the upper movable door panel is moved backwards and normal feeding can be carried out.

The outstanding effects of the present invention are:

It dries the air in the main box, which can ensure that when the materials are mixed in the mixing tank, there is basically no water in the mixing process, thus ensuring the mixing effect. After pouring the stone into the feed hopper, it directly senses the weighing to ensure the accuracy of the feed amount. There is no need to weigh it separately before feeding, thus reducing the operation procedures before feeding. At the same time, it pours the asphalt into the asphalt filling tank first, and then transports it to the mixing tank through the asphalt delivery pump. It can realize continuous transportation, and its asphalt filling tank can automatically weigh the incoming asphalt, eliminating the early weighing process and improving the feeding efficiency and effect.

Moreover, when not in use, the upper movable door panel can be moved forward to cover the central slot to prevent external materials from entering, basically ensuring that there are no other debris in the feed hopper and ensuring subsequent normal use.

Description of the drawings:

Fig. 1 is a schematic diagram of a partial structure of the present invention;

FIG2 is a partial side view of the feed hopper of the present invention;

FIG3 is a partial cross-sectional view of a feed hopper of the present invention;

FIG4 is a schematic diagram of the local structure of the feed hopper;

FIG5 is a schematic diagram of a partial structure of FIG4 at a changed angle;

FIG6 is a partial enlarged view of FIG1;

7 is a schematic diagram of the partial structure of the present invention without the main box;

FIG8 is a schematic diagram of the partial structure of the present invention without the side door body;

FIG9 is a schematic diagram of a partial structure of the present invention;

FIG10 is a cross-sectional view of the present invention;

FIG11 is a partial enlarged view of FIG10;

FIG12 is a schematic diagram of the local structure of the stirring tank;

FIG13 is a schematic diagram of the partial structure of the mixing tank, the asphalt filling tank, the asphalt delivery pump and the main box;

FIG14 is a partial structural schematic diagram of FIG13 without the main housing;

FIG15 is a schematic diagram of a partial structure of the angle-changing device of FIG14;

Fig. 16 is a partial cross-sectional view of the stirring tank;

FIG. 17 is a partial cross-sectional view of the stirring tank of the present invention.

Specific implementation method:

An embodiment, as shown in Figures 1 to 17, is a mobile asphalt mixing plant for low-temperature asphalt mixing, including a main box body 10, a central through groove 11 is formed in the middle of the top plate of the main box body 10, a feed hopper 20 is located directly below the central through groove 11, the feed hopper 20 is in the main box body 10, and the front and rear parts of the middle parts of the bottom surfaces of the left and right side plates of the feed hopper 20 are fixed with connecting support seats 21, and a pressure sensor 22 is installed on the bottom surface of the connecting support seat 21 (the bottom surface of the connecting support seat 21 is fixed to the top connecting piece of the pressure sensor 22, and the pressure sensor 22 in this embodiment is a product directly purchased on the market, which will not be described in detail here), the base of the pressure sensor 22 is fixed on the top surface of the corresponding transverse beam fixed in the main box body 10, and the front and rear ends of the transverse beam are fixed on the inner side walls of the corresponding parts of the support frame at the front and rear of the main box body 10.

An asphalt filling tank 30 is placed on the top surface of the bottom plate of the main box body 10, and first pressure sensors 31 are fixed on the top surface of the bottom plate of the main box body 10 below the four corners of the bottom surface of the asphalt filling tank 30, and the sensing connection parts of the tops of the four first pressure sensors 31 are fixed at the four corners of the bottom surface of the asphalt filling tank 30;

An asphalt delivery pump 40 is fixed on the top surface of the bottom plate of the main box body 10 on one side of the asphalt filling tank 30. The input pipe 41 of the asphalt delivery pump 40 extends into the asphalt filling tank 30, and the bottom end of the input pipe 41 is close to the top surface of the bottom plate of the asphalt filling tank 30.

The discharge end of the asphalt delivery pump 40 is connected to the discharge pipe 42, and a mixing tank 50 is fixed on the top surface of the bottom plate of the main box body 10 on one side of the asphalt delivery pump 40, and the discharge end of the discharge pipe 42 is connected to the mixing tank 50; a second asphalt delivery pump 80 is fixed on the top surface of the bottom plate of the main box body 10 on another side of the asphalt filling tank 30, and the discharge port of the second asphalt delivery pump 80 is connected to the discharge pipe, and the discharge end of the discharge pipe extends into the asphalt filling tank 30, and the feed port of the second asphalt delivery pump 80 is connected to the asphalt main feed pipe, which extends out of a through hole formed on one side plate of the main box body 10, which can be communicated with an external asphalt material box. At the same time, an elastic sealing ring can be fixed between the asphalt main feed pipe and the inner side wall of the through hole to improve the sealing performance. The discharge pipe and the asphalt main feed pipe are omitted in the accompanying drawings.

A main feed inlet 51 is formed in the middle of the top plate of the mixing tank 50 , and the material drop channel 25 of the feed hopper 20 is located directly above the main feed inlet 51 .

The first pressure sensor 31, the asphalt delivery pump 40 and the second asphalt delivery pump 80 are all electrically connected to the control host in the control cabinet through electrical connection lines, and are controlled by the control host. The control cabinet is fixed on the top surface of the bottom plate of the main box body 10, and an external connecting pipe is connected to one side plate of the control cabinet. The outer end of the external connecting pipe is connected to the air inlet of the ventilation fan (which is a conventional component, so it is omitted in the drawings) fixed on the inner wall of one side plate of the main box body 10, and the air outlet of the ventilation fan is connected to the through groove on this side plate. A lower through hole is formed on the bottom plate of the control cabinet, which is connected and aligned with the bottom through hole formed on the bottom plate of the main box body 10. In this structure, when the ventilation fan is running, the external air enters the control cabinet from the bottom through hole, exchanges heat with the components inside, and then is discharged from the through groove on the side plate of the main box body 10 through the external connecting pipe, so as to cool and dissipate the electrical components such as the control host in the control cabinet. Among them, a filter housing 90 is fixed on the bottom surface of the bottom plate of the main box body 10 at the bottom through hole, and a placement cavity extending backward is formed in the middle of the front end surface of the filter housing 90, and the placement cavity is communicated with the middle flow grooves on the top plate and the bottom plate of the filter housing 90, and the upper middle flow groove is communicated with the bottom through hole, and the middle of the left and right side walls of the placement cavity are formed with raised strips extending front and back, and the middle of the outer side walls of the left and right side plates of the filter cotton block 91 are formed with guide grooves extending front and back, and the raised strips are inserted into the corresponding guide grooves. The filter cotton block 91 fills the entire placement cavity, and the middle part of the filter cotton block 91 is filter cotton. Four side panels are fixed on the four side walls. The filter cotton of the filter cotton block 91 is communicated with the upper and lower middle flow grooves. The filter cotton block 91 can filter the inhaled air to prevent external impurities from entering the control box. At the same time, side panels are formed on the upper and lower parts of the left side plate of the filter housing 90 The through hole, the side through hole corresponds to and is aligned with the positioning concave hole on the outer side of the corresponding side plate of the filter cotton block 91. The upper and lower parts of the outer wall of the left side plate of the filter housing 90 are fixed with a positioning sleeve 92. A limiting plate is fixed on the left end surface of the positioning sleeve 92. The inner diameter of the middle through hole of the limiting plate is smaller than the inner diameter of the middle through hole of the positioning sleeve 92. The positioning rod 93 is inserted into the middle through hole of the limiting plate and the middle through hole of the positioning sleeve 92. The inner end of the positioning rod 93 is inserted into the corresponding side through hole and the positioning concave hole. An annular plate is fixed on the middle outer wall of the positioning rod 93. The right side wall of the annular plate is pressed against the outer wall of the left side plate of the filter housing 90. The left end of the positioning rod 93 extends out of the left end of the middle through hole of the limiting plate and is fixed with a gripping portion. A buffer spring is inserted into the middle part of the positioning rod 93. One end of the buffer spring is applied to the left side wall of the annular plate, and the other end of the buffer spring is applied to the inner end surface of the limiting plate.

When loading and unloading the filter cotton block 91, it is only necessary to pull the two positioning rods 93 so that the inner ends thereof are moved out from the corresponding positioning recessed holes to remove the filter cotton block 91. When installing, it is only necessary to pull the positioning rod 93 so that the inner ends of the positioning rods 93 are in the corresponding side through holes to insert the filter cotton block 91 into the placement cavity to complete the installation. The gripping portion is released, and the inner ends of the positioning rods 93 are inserted into the corresponding positioning recessed holes through the resetting of the buffer spring to complete the fixation. At this time, the filter cotton block 91 will not fall off.

The control program in the control host in the control cabinet in this embodiment can set the maximum and minimum values of the feed amount, so that when in use, the external asphalt is first operated through the second asphalt delivery pump 80 to fill the asphalt into the asphalt filling tank 30. At this time, the four first pressure sensors 31 sense the weight and transmit the sensing signal to the control host in the control cabinet. When the weight reaches the maximum value, the control host in the control cabinet controls the second asphalt delivery pump 80 to stop delivering, and then controls the asphalt delivery pump 40 to run, so as to deliver the asphalt to the mixing tank 50. When the four first pressure sensors 31 sense that the weight reaches the minimum value, it means that feeding is required. At this time, the control host in the control cabinet can control the second asphalt delivery pump 80 to run, and at the same time, control the asphalt delivery pump 40 to stop running. When When the maximum value is reached, the asphalt delivery pump 40 is controlled to run and continue to deliver, thereby realizing continuous feeding. At the same time, the control program in the control host in the control cabinet can accumulate the input asphalt weight for easy statistics. It can weigh the asphalt input into the asphalt filling tank 30 to ensure stable feeding. In addition, this process basically does not cause the problem of asphalt leakage, and the use effect is good. During use, a liquid level sensor can be installed on the inner side of the upper end of the asphalt filling tank 30. When the first pressure sensor 31 fails, the liquid level of the asphalt filling tank 30 can be sensed by the liquid level sensor. When it reaches the sensing limit set by the liquid level sensor, its sensing signal is transmitted to the control host in the control cabinet, and the control host in the control cabinet controls the external asphalt conveying device to stop running to prevent excessive feeding.

Furthermore, at least one powder conveying device 60 is installed in the main box 10 at one side of the feed hopper 20, and the bottom surface of the end of the conveying pipe 61 of the powder conveying device 60 is connected to a lower discharge pipe 62, and the bottom end of the lower discharge pipe 62 is connected to the mixing tank 50.

In the present embodiment, two powder conveying devices 60 are installed. The powder conveying devices 60 include a main frame 63, a powder placing box 64 is fixed on the top of the main frame 63, the bottom ends of the four legs of the main frame 63 are fixed on the top mounting component of the second pressure sensor 65, the base of the second pressure sensor 65 is fixed on the top surface of the corresponding transverse beam fixed inside the main box 10, a conveying pipe 61 is fixed on the bottom of the powder placing box 64, a screw conveying shaft is installed in the conveying pipe 61, both ends of the screw conveying shaft are movably connected to the conveying pipe 61 through bearings, the bottom discharge port of the powder placing box 64 is connected to the feed through hole on the top plate of the conveying pipe 61, a driving motor (which is electrically connected to the control host through an electrical connection line) is fixed at the outer end of the conveying pipe 61, the output shaft of the driving motor is fixed to the screw conveying shaft and drives the screw conveying shaft to rotate, and the bottom surface at the inner end of the conveying pipe 61 is connected to the lower discharge pipe 62, the bottom end of which is connected to the mixing tank 50 When in use, a powder feeding pipe can be placed in the powder placing box 64, and the outer end of the powder feeding pipe extends out of the through hole of the corresponding side panel of the main box body 10 and is connected to the discharge port of the screw conveyor on the external powder barrel, so that the powder can be transported to the powder placing box 64 through the external screw conveyor, and the second pressure sensor 65 can sense its weight. The principle is the same as the pressure control at the asphalt filling tank 30. When its weight reaches the maximum value set by the second pressure sensor 65, the control host in the control cabinet controls the external screw conveyor to stop conveying, and then controls the driving motor of the powder conveying device 60 to run, so as to transport the powder in the powder placing box 64 to the mixing tank 50. When the four second pressure sensors 65 sense that the weight reaches the minimum value, it means that feeding is needed. At this time, the control host in the control cabinet can control the external screw conveyor to continue conveying and continue conveying, thereby realizing continuous feeding.

Furthermore, a protective cover shell 52 is fixed to the top surface of the edge of the top plate of the mixing tank 50, and an upper cover plate 53 is fixed to the top surface of the protective cover shell 52. An upper transverse feed slot 531 extending left and right is formed in the middle of the upper cover plate 53, and an upper raised frame extending upward is formed on the top surface of the upper cover plate 53 at the side walls around the upper transverse feed slot 531. The upper transverse feed slot 531 is communicated with the main feed port 51, and at least one powder feed hole 539 is formed on the upper cover plate 53. The lower part of the lower discharge pipe 62 is inserted into the corresponding powder feed hole 539, and the bottom end of the lower discharge pipe 62 extends into the protective cover shell 52.

The bottom of the feed hopper 20 is located in the upper raised frame, and the material drop channel 25 is communicated with the upper transverse feed channel 531 .

The front side plate and the rear side wall of the mixing tank 50 are both arc-shaped wall plates protruding outwards, and the front and rear parts of the bottom plate of the mixing tank 50 are both arc-shaped wall plates protruding downwards. The bottom surface of the bottom plate of the mixing tank 50 between the two arc-shaped wall plates is formed with an elongated groove extending upwards, and the top surface of the elongated groove is an arc-shaped wall surface, and a discharge through groove 54 is formed in the middle thereof;

A transverse rotating shaft 501 is provided at the front and rear between the left and right plates of the stirring tank 50. The transverse rotating shaft 501 is movably connected to the left and right plates through bearings. One end of the transverse rotating shaft 501 extends out of the left or right plate and is fixed with a transmission gear 502. A plurality of stirring arms 503 are fixed on the outer wall of the transverse rotating shaft 501. A stirring paddle 504 is fixed at the end of the stirring arm 503. The stirring paddle 504 cooperates with the inner wall of the front side plate and the top surface of the bottom plate of the corresponding stirring tank 50.

A plurality of wear-resistant reinforcement plates 505 are fixed on the inner side wall of the mixing tank 50 , and all the wear-resistant reinforcement plates 505 cover all the inner side walls of the mixing tank 50 .

A stirring motor 70 and a reduction box 71 are fixed on the top surface of the bottom plate of the main box body 10 on one side of the stirring tank 50. A driving pulley 72 is fixed on the output shaft of the stirring motor 70, and a transmission pulley 73 is fixed on the input shaft of the reduction box 71. A transmission belt (not shown in the drawings) is tensioned on the driving pulley 72 and the transmission pulley 73. A driving gear 74 is fixed on both output shafts of the reduction box 71, and the driving gear 74 is meshed with the corresponding transmission gear 502. When the stirring motor 70 is running, the driving gear 74 of the reduction box 71 drives the corresponding transmission gear 502 to rotate, so that the material in the stirring tank 50 can be stirred.

Side support frames 55 are fixed to the top surfaces of the left and right ends of the elongated groove, and two circular end plates 56 are located between the two side support frames 55. The outer side wall of each circular end plate 56 is close to the corresponding side support frame 55. The left and right ends of the upper arc-shaped material baffle plate 57 are fixed on the inner side walls of the upper parts of the two circular end plates 56, and the top surface of the upper arc-shaped material baffle plate 57 is close to the top surface of the elongated groove and covers the discharge channel 54; a transverse reinforcement rod is fixed between the lower parts of the two circular end plates 56, and the two ends of the transverse reinforcement rod are fixed on the lower inner side walls of the two circular end plates 56.

A rotating shaft 561 is fixed to the middle of the circular end plate 56, and the rotating shaft 561 is movably connected to the corresponding side support frame 55 through a bearing. A discharge pushing cylinder 58 is movably connected to the top surface of the bottom plate of the main box body on one side of the mixing tank 50, and the end of the push rod of the discharge pushing cylinder 58 is movably connected to one end of a rotating arm 59 through a hinge shaft, and the other end of the rotating arm 59 is fixed to one end of the corresponding rotating shaft 561 extending out of the side support frame 55.

The rotating arm 59 is an arc-shaped rotating arm.

The discharge end of the discharge pipe 42 is connected to the feed end formed or connected on the middle side wall of the distribution pipe 43. The distribution pipe 43 is located directly above the upper cover plate 53. A plurality of distribution pipes 431 are connected to the bottom plate of the distribution pipe 43. The lower part of the distribution pipe 431 extends out of the bottom end of the corresponding through hole on the upper cover plate 53 and communicates with the main feed port 51. The distribution pipes 431 make the asphalt fed into the mixing tank 50 uniform, thereby improving the uniformity of subsequent mixing.

When the material in the mixing tank 50 is mixed, the push rod of the discharge cylinder 58 can be pushed to make the upper arc-shaped baffle plate 57 flip over and no longer cover the discharge slot 54, so that the mixed material can be discharged from the discharge slot 54 and finally from the lower discharge slot on the bottom plate of the main box body 10. A receiving tray can be placed below it for receiving materials, which is very convenient.

The discharging pushing cylinder 58 is connected to the corresponding electromagnetic valve of the hydraulic system through a connecting pipe, and is controlled by the hydraulic system, and the hydraulic system is controlled by the control host. They are all conventional structures and will not be described in detail here.

In this embodiment, the asphalt can be first poured into the asphalt filling tank 30, and then sent to the mixing tank 50 through the asphalt delivery pump 40, which can realize continuous delivery, and the asphalt filling tank 30 can automatically weigh the incoming asphalt, eliminating the previous weighing process and improving the feeding efficiency and effect.

Furthermore, a dryer 80 is installed in the main box 10. Side doors that can be opened and closed are installed on the left and right sides of the main box 10. When in use, the side doors on the left and right sides of the main box 10 are closed, so that the internal cavity of the main box 10 is separated from the external environment. Through the operation of the dryer 80, the air in the main box 10 can be dried and dehumidified to ensure that there is basically no water mixed in when the material in the main box 10 is stirred, thereby ensuring its stirring effect.

At the same time, it is necessary to install a temperature sensor and a humidity sensor on the inner wall of the main box 10 so that the temperature and humidity inside the main box 10 can be known at all times. The temperature sensor and the humidity sensor are electrically connected to the control host through electrical connecting lines (the temperature sensor and the humidity sensor are omitted in the accompanying drawings).

The dryer 80 may be a heat dryer or a drying machine. When the temperature is too high during heat drying, the dryer 80 may be controlled to stop running by controlling the host to prevent the temperature from being too high (to ensure the normal operation of various electronic devices and electric devices). When the temperature is too high during heat drying, the humidity is definitely at a low level.

The dryer 80 is a cold dryer. In this case, a plurality of electric heating plates need to be fixed on the outer wall of the feed hopper 20. All the electric heating plates cover the outer wall of the feed hopper 20, thereby ensuring that the temperature of the feed hopper 20 is stable during cold drying and preventing water droplets from being generated on its inner wall.

Furthermore, a front through-slot 111 is formed on the upper portion of the front inner side wall of the central through-slot 11 of the main box body 10 , and the front through-slot 111 is communicated with the central through-slot 11 .

A front guide plate 112 is fixed to the top surface of the front through groove 111, and a front oblique wall panel 113 extending backward and downward is formed at the rear end of the front guide plate 112. The upper part of the front wall panel of the feed hopper 20 is below the front oblique wall panel 113, and the upper inner wall surface of the front wall panel of the feed hopper 20 is close to or tightly attached to the lower wall surface of the front oblique wall panel 113. This front wall panel is the front oblique wall panel 29 of the feed hopper 20.

Further, the feed hopper 20 includes four upper oblique wall panels 29 extending obliquely outward and upward in four directions, the side walls of two adjacent oblique wall panels 29 of the four oblique wall panels 29 are formed or fixed together (the two are sealed, that is, there is no gap or space at the connection), the bottoms of the front and rear oblique wall panels 29 are formed with lower extension plate portions 23 that are obliquely close to each other downward, and the bottoms of the left and right oblique wall panels 29 are formed with vertical plate portions 24 that extend vertically downward, and the left and right side walls of the two lower extension plate portions 23 are formed or welded with the front and rear side walls of the corresponding two vertical plate portions 24 to form a lower extension hopper portion (the side walls connected to the lower extension plate portion 23 and the vertical plate portion 24 are sealed, that is, there is no gap or space at the connection), and the middle part of the bottom of the lower extension hopper portion is a blanking slot 25. The lower part of the lower extension hopper portion is in the upper raised frame.

An arc-shaped baffle plate 26 is provided below the lower extending bucket portion, and the arc-shaped baffle plate 26 covers the blanking slot 25. The arc-shaped baffle plate 26 is also in the upper raised frame, and the top surface of the arc-shaped baffle plate 26 is close to the bottom end of the lower extending bucket portion (because the bottom ends of the two vertical plate portions 24 are arc-shaped end surfaces, the arc-shaped baffle plate 26 matches the bottom ends of the vertical plate portions 24), wherein a brush layer (not shown in the drawings) can be fixed on the top surfaces of the four side edges of the arc-shaped baffle plate 26 to further improve the sealing effect, and side vertical plates 261 are fixed or formed on the left and right sides of the arc-shaped baffle plate 26, and the side vertical plates 261 are located on the outer sides of the corresponding vertical plate portions 24 and are movably connected to the corresponding vertical plate portions 24 through hinge shafts;

Furthermore, a connecting portion 262 is fixed to the middle portion of the rear side wall of the arc-shaped baffle 26, a connecting seat 263 is fixed to the upper portion of the rear wall surface of the inclined wall panel 29 at the rear of the feed hopper 20, the connecting portion of the first flip cylinder 264 is movably connected to the connecting seat 263 via a hinge shaft, and the bottom end of the push rod of the first flip cylinder 264 is movably connected to the connecting portion 262 via a hinge shaft.

Furthermore, side baffles 114 are fixed on the left and right side walls of the central through groove 11, and the bottom end of the side baffle 114 is formed with a side oblique blocking portion 115 extending obliquely toward the middle. The upper parts of the left and right oblique wall panels 29 of the feed hopper 20 are located below the corresponding side oblique blocking portions 115, and the upper inner wall surfaces of the left and right oblique wall panels 29 are close to or tightly attached to the lower wall surfaces of the corresponding side oblique blocking portions 115.

The top surface of the top plate of the main box body 10 on the left and right sides of the central through slot 11 is fixed with guide rails 12 extending forward and backward, the upper movable door panel 13 is located above the two guide rails 12 and corresponds to the central through slot 11, and multiple pulleys 14 are installed on the bottom surfaces on the left and right sides of the upper movable door panel 13, and the pulleys 14 are installed in the corresponding guide rails 12, and a rear baffle 141 is fixed on the front wall surface of the upper movable door panel 14, and a rear oblique extension portion 142 extending obliquely forward and downward is formed on the bottom end of the rear baffle 141, and the upper part of the oblique wall panel at the rear of the feed hopper 20 is located below the rear oblique extension portion 142, and the upper inner wall surface of the oblique wall panel at the rear of the feed hopper 20 is close to or close to the lower wall surface of the rear oblique extension portion 142.

A vertical connecting plate 143 is formed or fixed on the bottom surface of the front end of the upper movable door panel 14, a fixing seat is fixed on the bottom surface of the top plate of the main box body 10 at the rear of the central through groove 11, a transverse pushing cylinder 144 is fixed on the fixing seat, and the end of the push rod of the transverse pushing cylinder 144 is movably connected to the vertical connecting plate 143 through a hinge shaft.

When the feed hopper 20 is not feeding and is not in use, it can be pushed by the push rod of the oil cylinder 144 horizontally, so that the upper movable door panel 14 moves forward to cover the central through groove 11. When it moves, it moves along the corresponding guide rail 12 through the pulley 14 to reduce friction and ensure normal pushing.

When in use, the front guide plate 112, the side baffle plate 114 and the rear baffle plate 141 cooperate with the top of the feed hopper 20 to ensure that the stones entering the feed hopper 20 are not easy to leak out.

After the stone enters the feed hopper 20, its weight can be sensed by four pressure sensors 22 (the pressure sensor 22 is electrically connected to the control host in the control cabinet through an electrical connection line, and its placement amount can be set by the control program in the control host in the control cabinet. When the stone in the feed hopper 20 reaches the set weight value, the corresponding indicator light can be controlled by the control host in the control cabinet to light up. The indicator light can be installed on the outer wall of the main box 10 to indicate that the stone has reached the amount and the discharge can be stopped. The control host and indicator lights in this control cabinet are all conventional structures, which will not be described in detail here and are not shown in the drawings), so as to ensure the accuracy of feeding;

After the material discharge reaches the set value, the push rod of the first flip cylinder 264 can be retracted to make the arc baffle 26 flip open, and the stone in the feed hopper 20 can fall from the drop groove 25 into the mixing tank 50. At the same time, the driving motors of the two powder conveying devices 60 are operated to transport the powder to the mixing tank 50, and the asphalt conveying pump 40 is operated to transport the asphalt to the mixing tank 50. Then, the stirring motor 70 is operated to rotate the transverse shaft 501, so that the stirring arm 503 and the stirring paddle 504 rotate and stir, so that the materials in the mixing tank 50 can be stirred and mixed. When the stirring is completed, the push rod of the discharge pushing cylinder 58 can be pushed to make the upper arc baffle 57 flip and no longer cover the discharge groove 54, so that the stirred material can be discharged from the discharge groove 54, and finally, it comes out from the lower discharge groove on the bottom plate of the main box body 10, and a receiving tray can be placed below it for receiving materials, which is very convenient.

During the feeding process, the four pressure sensors 22 can sense the gradual decrease in weight until they sense the initial value (i.e., the value without stone). The corresponding indicator lights can be controlled by the control host in the control cabinet to light up, indicating that feeding can continue in the feed hopper 20. At the same time, the control host in the control cabinet controls the operation of the electronic control valve of the hydraulic system (which is a conventional hydraulic system, composed of a hydraulic pump, a hydraulic oil tank, and a control valve connected through a connecting pipe and connected to the first flip cylinder 264 and the lateral push cylinder 144 to achieve operation. It will not be described in detail here. The hydraulic system is fixed on the top surface of the bottom plate of the main box body 10). The push rod of the first flip cylinder 264 can be controlled to push, so that the arc baffle 26 flips back to cover the blanking groove 25, and feeding can continue, which is very convenient.

Claims (10)

1. The utility model provides a low temperature pitch stirring is with portable pitch stirring station, includes main tank body (10), its characterized in that: the middle part of the top plate of the main box body (10) is provided with a central through groove (11), the feed hopper (20) is positioned under the central through groove (11), the feed hopper (20) is positioned in the main box body (10), the front part and the rear part of the middle parts of the bottom surfaces of the left side plate and the right side plate of the feed hopper (20) are respectively fixed with a connecting support seat (21), the bottom surface of the connecting support seat (21) is provided with a pressure sensor (22), and the base of the pressure sensor (22) is fixed on the top surface of a corresponding transverse beam fixed in the main box body (10);

An asphalt filling tank (30) is placed on the top surface of the bottom plate of the main tank body (10), first pressure sensors (31) are fixed on the top surface of the bottom plate of the main tank body (10) below four corners of the bottom surface of the asphalt filling tank (30), and induction connecting parts at the tops of the four first pressure sensors (31) are fixed at four corners of the bottom surface of the asphalt filling tank (30);

An asphalt conveying pump (40) is fixed on the top surface of the bottom plate of the main box body (10) at one side of the asphalt filling tank (30), an input pipe (41) of the asphalt conveying pump (40) stretches into the asphalt filling tank (30), and the bottom end of the input pipe (41) is close to the top surface of the bottom plate of the asphalt filling tank (30);

The discharge end of the asphalt conveying pump (40) is communicated with a discharge pipe (42), a stirring tank (50) is fixed on the top surface of the bottom plate of the main box body (10) at one side of the asphalt conveying pump (40), and the discharge end of the discharge pipe (42) is communicated with the stirring tank (50);

the middle part shaping of the top end plate of agitator tank (50) has total feed inlet (51), and blanking logical groove (25) of feeder hopper (20) are located total feed inlet (51) directly over.

2. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 1, wherein: at least one powder conveying device (60) is arranged in the main box body (10) at one side of the feed hopper (20), a lower discharging pipe (62) is connected to the bottom surface of the end part of a conveying pipe (61) of the powder conveying device (60), and the bottom end of the lower discharging pipe (62) is communicated with the stirring tank (50).

3. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 2, wherein: the top surface of the edge of the top end plate of the stirring tank (50) is fixedly provided with a protective cover shell (52), the top end surface of the protective cover shell (52) is fixedly provided with an upper cover plate (53), the middle part of the upper cover plate (53) is provided with an upper transverse feeding through groove (531) which extends leftwards and rightwards, the top surface of the upper cover plate (53) at the side wall of the periphery of the upper transverse feeding through groove (531) is provided with an upper protruding frame which extends upwards, the upper transverse feeding through groove (531) is communicated with a main feeding port (51), the upper cover plate (53) is provided with at least one powder feeding through hole (539), the lower part of a lower discharging pipe (62) is inserted into the corresponding powder feeding through hole (539), and the bottom end of the lower discharging pipe (62) stretches into the protective cover shell (52);

The bottom of the feed hopper (20) is positioned in the upper protruding frame, and the blanking through groove (25) is communicated with the upper transverse feeding through groove (531).

4. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 1, wherein: the front side plate and the rear side wall of the stirring tank (50) are arc-shaped wall plates protruding outwards, the front part and the rear part of the bottom plate of the stirring tank (50) are arc-shaped wall plate parts protruding downwards, an upward extending long groove is formed in the bottom surface of the bottom plate of the stirring tank (50) between the two arc-shaped wall plate parts, the top surface of the long groove is an arc-shaped wall surface, and a discharging through groove (54) is formed in the middle of the long groove;

The front portion and the rear portion between the left side board and the right side board of agitator tank (50) all are equipped with horizontal pivot (501), and horizontal pivot (501) are on left side board and right side board through bearing swing joint, and left side board or right side board are stretched out to one end of horizontal pivot (501) and are fixed with drive gear (502), are fixed with a plurality of stirring arms (503) on the lateral wall of horizontal pivot (501), and the tip of stirring arm (503) is fixed with stirring piece (504), stirring piece (504) cooperate with the inside wall of the preceding curb plate of corresponding agitator tank (50), the top surface of bottom board.

5. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 4, wherein: a plurality of wear-resistant reinforcing plates (505) are fixed on the inner side walls of the stirring tank (50), and all the wear-resistant reinforcing plates (505) cover all the inner side walls of the stirring tank (50).

6. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 4, wherein: a stirring motor (70) and a reduction gearbox (71) are fixed on the top surface of a bottom plate of a main box body (10) at one side of the stirring tank (50), a driving belt pulley (72) is fixed on an output shaft of the stirring motor (70), a transmission belt pulley (73) is fixed on an input shaft of the reduction gearbox (71), the transmission belt is tensioned on the driving belt pulley (72) and the transmission belt pulley (73), driving gears (74) are fixed on two output shafts of the reduction gearbox (71), and the driving gears (74) are meshed with the corresponding transmission gears (502).

7. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 4, wherein: the top surfaces of the left end and the right end of the long groove are respectively fixed with a side supporting frame (55), two circular end plates (56) are positioned between the two side supporting frames (55), the outer side wall of each circular end plate (56) is close to the corresponding side supporting frame (55), the left end and the right end of the upper arc-shaped baffle plate (57) are fixed on the inner side walls of the upper parts of the two circular end plates (56), and the top surface of the upper arc-shaped baffle plate (57) is tightly attached to the top surface of the long groove and covers the discharging through groove (54);

The middle part of circular end plate (56) is fixed with axis of rotation (561), and axis of rotation (561) pass through bearing swing joint on corresponding side support frame (55), and swing joint has ejection of compact pushing cylinder (58) on the top surface of the bottom plate of the main tank body of one side of agitator tank (50), and the tip of the push rod of ejection of compact pushing cylinder (58) has the one end of rotor arm (59) through articulated shaft swing joint, and the other end of rotor arm (59) is fixed on the one end that corresponding axis of rotation (561) stretches out side support frame (55).

The rotating arm (59) is an arc-shaped rotating arm.

8. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 3, wherein: an asphalt filling tank (30) is placed on the top surface of the bottom plate of the main tank body (10), first pressure sensors (31) are fixed on the top surface of the bottom plate of the main tank body (10) below four corners of the bottom surface of the asphalt filling tank (30), and induction connecting parts at the tops of the four first pressure sensors (31) are fixed at four corners of the bottom surface of the asphalt filling tank (30);

An asphalt conveying pump (40) is fixed on the top surface of the bottom plate of the main box body (10) at one side of the asphalt filling tank (30), an input pipe (41) of the asphalt conveying pump (40) stretches into the asphalt filling tank (30), and the bottom end of the input pipe (41) is close to the top surface of the bottom plate of the asphalt filling tank (30);

the discharge end of the asphalt conveying pump (40) is communicated with a discharge pipe (42), and the discharge end of the discharge pipe (42) is communicated with the stirring tank (50).

9. The mobile asphalt plant for low-temperature asphalt mixing as defined in claim 8, wherein: the discharge end of the discharge pipe (42) is communicated with the feed end formed or communicated on the side wall of the middle part of the material dividing pipe (43), the material dividing pipe (43) is positioned right above the upper cover plate (53), a plurality of material dividing pipes (431) are communicated on the bottom plate of the material dividing pipe (43), and the lower part of the material dividing pipe (431) extends out of the bottom end of the corresponding through hole on the upper cover plate (53) and is communicated with the total feed inlet (51).

10. A mobile asphalt plant for low temperature asphalt mixing as defined in claim 1, wherein: a dryer (80) is installed in the main box body (10).

The dryer (80) is a thermal dryer or a dryer.

The dryer (80) is a cold dryer, at this time, a plurality of electric heating plates are fixed on the outer side wall of the feed hopper (20), and all the electric heating plates cover the outer side wall of the feed hopper (20), so that the temperature of the feed hopper (20) is stable and water drops on the inner side wall of the feed hopper are prevented when cold drying is guaranteed.

The left side and the right side of the main box body (10) are provided with side door bodies which can be opened and closed.