A powder spreading vehicle top

Abstract

The present invention relates to a powder spreading vehicle, and in particular to a powder spreading vehicle top, which solves the problem of high feeding cost of the existing powder spreading vehicle top using a spiral feeder. The top includes a powder tank, a spreading device and a material door assembly, and is special in that it also includes a tank body partition, a material discharging pipeline and a material discharging device; the tank body partition is arranged inside the powder tank, and the powder tank is divided into a front storage tank and a rear spreading tank by the tank body partition; the tank body partition is inclined toward the front of the powder tank, and the angle between the tank body partition and the horizontal axis of the front-rear direction of the powder tank is greater than or equal to the dynamic repose angle of the powder to be spread; a first discharge port is arranged on the material discharging pipeline; the first discharge port is located above the inside of the front storage tank; the feed port of the material discharging pipeline is used to connect the material discharging device; the material discharging device transports the powder to be spread in the front storage tank to the rear spreading tank; the spreading device is arranged at the rear and lower part of the rear spreading tank; the material door assembly is arranged below the spreading device.

Description

Technical Field

[0001] The invention relates to a powder spreading vehicle, in particular to a powder spreading vehicle upper body. Background Art

[0002] The powder spreader is a road machinery used for spreading cement and lime in the construction of in-situ cold regeneration of asphalt pavement and improved soil base.

[0003] The existing powder spreading vehicle is equipped with a screw feeder for feeding the materials, which is very expensive. Summary of the invention

[0004] The purpose of the present invention is to provide a powder spreading vehicle top mount to solve the technical problem that the existing powder spreading vehicle top mount adopts a screw feeder to feed materials, which results in high cost.

[0005] The technical solution adopted by the present invention is a powder spreading vehicle top, comprising a powder tank, a spreading device and a material door assembly; the special features thereof are:

[0006] It also includes tank baffles, material punching pipelines and material conveying devices;

[0007] The tank partition is arranged inside the powder tank, and the powder tank is divided into a front storage tank and a rear spreading tank by the tank partition; the tank partition is inclined toward the front of the powder tank, and the angle between the tank partition and the horizontal axis of the front-rear direction of the powder tank is greater than or equal to the dynamic repose angle of the powder to be spread;

[0008] The material-beating pipeline is provided with a first discharge port; the first discharge port is located above the interior of the front storage tank; the feed port of the material-beating pipeline is used to connect the material-beating device;

[0009] The feeding device conveys the powder to be spread in the front storage tank to the rear spreading tank;

[0010] The spreading device is arranged at the rear lower part of the rear spreading tank;

[0011] The material door assembly is arranged below the spreading device.

[0012] Furthermore, in order to conveniently and economically transport the powder to be spread in the front storage tank to the rear spreading tank, the front storage tank is a closed space during material transport and spreading;

[0013] The material conveying device includes an air compressor, a compressed air circuit valve, a material conveying pipeline, an exhaust device and an exhaust connecting air valve;

[0014] One end of the compressed air circuit valve is connected to the air flow outlet of the air compressor, and the other end is connected to the upper part of the front storage tank;

[0015] One end of the material delivery pipeline is connected to the discharge port of the front storage tank arranged below the front storage tank, and the other end is connected to the upper part of the rear spreading tank;

[0016] The exhaust device is arranged on the rear spreading tank;

[0017] One end of the exhaust communication valve is communicated with the front storage tank, and the other end is communicated with the rear spreading tank.

[0018] Furthermore, in order to completely output the powder at the bottom of the front storage tank without any powder residue, a fluidized bed mechanism is arranged below the front storage tank; the air compressor provides an air source for the fluidized bed mechanism.

[0019] Furthermore, in order to not only ensure that there is no powder residue at the bottom of the front storage tank but also to enable the front storage tank to have a larger storage capacity, the first inclined plate and the second inclined plate are also included;

[0020] The fluidized bed mechanism comprises a first fluidizing plate, a first fluidizing gas valve, a second fluidizing plate and a second fluidizing gas valve;

[0021] The first inclined plate and the second inclined plate are respectively arranged on the left and right sides of the front storage tank along the front-back direction of the powder tank; the first fluidizing plate and the second fluidizing plate are respectively arranged on the front and rear sides of the front storage tank; the first inclined plate, the second inclined plate, the first fluidizing plate and the second fluidizing plate form an inverted quadrangular pyramid; and the sum of the projected areas of the first fluidizing plate and the second fluidizing plate is greater than the area of ​​the bottom surface of the inverted quadrangular pyramid;

[0022] The included angles between the first inclined plate, the second inclined plate and the horizontal plane are both greater than or equal to the dynamic repose angle of the powder to be spread; the included angles between the first fluidizing plate, the second fluidizing plate and the horizontal plane are both less than the dynamic repose angle of the powder to be spread;

[0023] Below the first fluidizing plate, the first fluidizing plate and the outer wall of the powder tank form a first fluidizing air chamber; below the second fluidizing plate, the second fluidizing plate and the outer wall of the powder tank and the tank body partition form a second fluidizing air chamber;

[0024] The air compressor has three air outlets: one is connected to the upper part of the front storage tank through the compressed air valve; another is connected to the first fluidizing air chamber through the first fluidizing air valve; and the third is connected to the second fluidizing air chamber through the second fluidizing air valve.

[0025] The discharge port of the front storage tank is located on the lower bottom surface of the inverted quadrangular pyramid.

[0026] Furthermore, the first fluidizing plate and the second fluidizing plate are both plate-shaped structures formed by stacking a perforated plate and a canvas, so that the purpose of fluidization can be achieved and the powder will not leak into the fluidizing air chamber below.

[0027] Furthermore, it also includes a rear top material level switch, a side rear material level switch and a front top material level switch;

[0028] The rear top material level switch is arranged at the top of the rear spreading tank;

[0029] The side rear material level switch is arranged below the central horizontal plane in the rear spreading tank;

[0030] The front top material level switch is arranged above the interior of the front storage tank;

[0031] The material delivery pipeline is provided with a material delivery pipeline gas valve;

[0032] The compressed air circuit valve, the first fluidizing air valve, the second fluidizing air valve, the material delivery pipeline valve, the rear top material level switch and the side rear material level switch are controlled in a linked manner. In this way, when spreading powder, the amount of powder in the rear spreading tank can meet the spreading requirements without material accumulation.

[0033] Furthermore, in order to improve the feeding efficiency, the feeding pipeline is also provided with a second discharge port, a first feeding pipeline valve and a second feeding pipeline valve, and the first discharge port is provided with two or more;

[0034] The second discharge port is located above the interior of the rear spreading tank;

[0035] The first material-beating pipeline valve is arranged at the feed inlet of the material-beating pipeline, and is used to control the opening and closing of the entire material-beating pipeline;

[0036] The second material discharging pipeline valve is arranged between the first material discharging pipeline valve and the second material discharging port, and is used to control the opening and closing of the second material discharging port.

[0037] Furthermore, a filter element is provided on the exhaust device, so that dust generated during the material mixing and feeding process can be filtered to ensure that the discharged airflow is clean.

[0038] Furthermore, in order to facilitate internal maintenance and safety needs, a manhole and a safety valve are also included;

[0039] The manhole and the safety valve are both arranged on the top of the front storage tank.

[0040] Furthermore, in order to improve the material conveying efficiency, there are two or more material conveying pipelines.

[0041] The beneficial effects of the present invention are:

[0042] (1) The powder spreading vehicle top of the present invention conveys the powder to be spread in the front storage tank to the rear spreading tank through a feeding device, and then uses the inclination angle of the tank body partition to be greater than or equal to the dynamic repose angle of the powder to be spread, so that the powder to be spread can fall freely, and then be output and spread; the above-mentioned feeding structure replaces the existing screw feeder, and its cost is relatively low; therefore, the powder spreading vehicle top of the present invention solves the technical problem that the existing powder spreading vehicle top uses a screw feeder for feeding, which is relatively expensive.

[0043] (2) The powder spreading vehicle of the present invention is preferably equipped with a feeding device that generates an air flow through an air compressor, so that the air pressure inside the front storage tank is greater than the air pressure inside the rear spreading tank during feeding and spreading, and the pressure difference between the two is used to transport the powder to be spread from the front storage tank to the rear spreading tank; the feeding device is convenient for transportation and low in cost.

[0044] (3) The powder spreading vehicle of the present invention is preferably provided with a fluidized bed mechanism below the front storage tank, so that the powder at the bottom of the front storage tank can be completely discharged without any powder residue.

[0045] (4) The powder spreading vehicle of the present invention is preferably equipped with a first inclined plate and a second inclined plate on the left and right sides of the front storage tank, and a first fluidizing plate and a second fluidizing plate on the front and rear sides of the front storage tank. The first inclined plate, the second inclined plate, the first fluidizing plate and the second fluidizing plate form an inverted quadrangular pyramid; and the sum of the projected areas of the first fluidizing plate and the second fluidizing plate is larger than the area of ​​the bottom surface below the inverted quadrangular pyramid; the angles between the first inclined plate, the second inclined plate and the horizontal plane are both greater than or equal to the dynamic repose angle of the powder to be spread; the angles between the first fluidizing plate, the second fluidizing plate and the horizontal plane are both smaller than the dynamic repose angle of the powder to be spread. In this way, while ensuring the effectiveness of the fluidized bed mechanism, the front storage tank can have a larger storage capacity.

[0046] (5) The powder spreading vehicle of the present invention is preferably equipped with a compressed air valve, a first fluidizing air valve, a second fluidizing air valve, a feed pipeline air valve, a rear top material level switch and a side rear material level switch, which are controlled in a linked manner. In this way, when spreading powder, the amount of powder in the rear spreading tank can meet the spreading requirements without causing material accumulation.

[0047] (6) The powder spreading vehicle of the present invention preferably has a plurality of discharge ports for the material discharging pipeline and two or more material delivery pipelines, so as to improve the efficiency of material discharging and material delivery, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural principle diagram of an embodiment of the present invention;

[0049] Figure 2It is a cross-sectional view of the tank body of the front storage tank in an embodiment of the present invention.

[0050] The descriptions of the numbers in the figure are as follows:

[0051] 1-powder tank, 101-front storage tank, 1011-front storage tank outlet, 1012-fluidized bed mechanism, 10121-first fluidizing plate, 10122-first fluidizing gas valve, 10123-second fluidizing plate, 10124-second fluidizing gas valve, 10125-first fluidizing gas chamber, 10126-second fluidizing gas chamber, 1013-first inclined plate, 1014-second inclined plate, 102-rear spreading tank, 2-spreading device, 3-material Door assembly, 4-tank partition, 5-air compressor, 6-compressed air circuit valve, 7-feeding pipeline, 71-first discharge port, 72-second discharge port, 73-first feeding pipeline valve, 74-second feeding pipeline valve, 8-feeding pipeline, 81-feeding pipeline air valve, 9-exhaust device, 10-exhaust connecting air valve, 11-rear top material level switch, 12-side rear material level switch, 13-front top material level switch, 14-manhole, 15-safety valve. DETAILED DESCRIPTION

[0052] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] See also Figure 1 The present invention discloses a powder spreading vehicle upper body, and its structure includes a powder tank 1, a spreading device 2, a material door assembly 3, a tank body partition 4, a material spraying pipeline 7 and a material conveying device.

[0054] The tank partition 4 is arranged inside the powder tank 1, and the powder tank 1 is divided into a front storage tank 101 and a rear spreading tank 102 by the tank partition 4; the tank partition 4 is inclined toward the front of the powder tank 1, and the angle between the tank partition 4 and the horizontal axis of the front-to-back direction of the powder tank 1 is greater than or equal to the dynamic repose angle of the powder to be spread.

[0055] A first discharge port 71 is provided on the feeding pipeline 7; the first discharge port 71 is located above the interior of the front storage tank 101; in the present embodiment, in order to improve the feeding efficiency, there are two first discharge ports 71. In addition to the two in the present embodiment, there may also be multiple first discharge ports 71; in addition, in the present embodiment, a second discharge port 72, a first feeding pipeline valve 73 and a second feeding pipeline valve 74 are also provided on the feeding pipeline 7; the second discharge port 72 is located above the interior of the rear spreading tank 102, and is used to directly feed the rear spreading tank 102; the above-mentioned first feeding pipeline valve 73 is provided at the feeding port of the feeding pipeline 7, and is used to control the opening and closing of the entire feeding pipeline 7; the above-mentioned second feeding pipeline valve 74 is provided between the first feeding pipeline valve 73 and the second discharge port 72, and is used to control the opening and closing of the second discharge port 72; the feeding port of the feeding pipeline 7 is used to connect the feeding device.

[0056] In this embodiment, in order to conveniently and economically transport the powder to be spread in the front storage tank 101 to the rear spreading tank 102, the front storage tank 101 is preferably a closed space that can withstand a certain internal pressure and will not deform; the feeding device preferably includes an air compressor 5, a compressed air circuit valve 6, a feeding pipeline 8, an exhaust device 9 and an exhaust connecting valve 10.

[0057] One end of the material delivery pipeline 8 is connected to the front storage tank discharge port 1011 arranged below the front storage tank 101, and the other end is connected to the upper part of the rear spreading tank 102. In this embodiment, a material delivery pipeline gas valve 81 is arranged on the material delivery pipeline 8 to control the opening and closing of the material delivery pipeline 8; at the same time, in order to improve the material delivery efficiency, the material delivery pipeline 8 of this embodiment has two, and it can also be more than one.

[0058] In this embodiment, in order to completely output the powder at the bottom of the front storage tank 101 without any powder residue, a fluidized bed mechanism 1012 is provided below the front storage tank 101. In this embodiment, in order to ensure that the storage capacity of the front storage tank 101 is increased under the premise of ensuring that the fluidized bed mechanism 1012 works effectively, the powder spreading vehicle upper body of the present invention further includes a first inclined plate 1013 and a second inclined plate 1014, see Figure 2The fluidized bed mechanism 1012 comprises a first fluidizing plate 10121, a first fluidizing gas valve 10122, a second fluidizing plate 10123 and a second fluidizing gas valve 10124; the first inclined plate 1013 and the second inclined plate 1014 are respectively arranged on the left and right sides of the front storage tank 101 along the front and rear directions of the powder tank 1; the first fluidizing plate 10121 and the second fluidizing plate 10123 are respectively arranged on the front and rear sides of the front storage tank 101; the first inclined plate 1013, the second inclined plate 1014, the first fluidizing plate 10121 and the second fluidizing plate 10123 are respectively arranged on the front and rear sides of the front storage tank 101; The interior of the second fluidizing plate 10123 is surrounded by an inverted quadrangular pyramid; and the sum of the projected areas of the first fluidizing plate 10121 and the second fluidizing plate 10123 is greater than the area of ​​the bottom surface of the inverted quadrangular pyramid; the angles between the first inclined plate 1013 and the second inclined plate 1014 and the horizontal plane are both greater than or equal to the dynamic repose angle of the powder to be spread; the angles between the first fluidizing plate 10121 and the second fluidizing plate 10123 and the horizontal plane are both less than the dynamic repose angle of the powder to be spread; the front storage tank outlet 1011 is located on the bottom surface of the inverted quadrangular pyramid. Below the first fluidizing plate 10121, the first fluidizing plate 10121 and the outer wall of the powder tank 1 form a first fluidizing air chamber 10125; below the second fluidizing plate 10123, the second fluidizing plate 10123 and the outer wall of the powder tank 1 and the tank body partition 4 form a second fluidizing air chamber 10126.

[0059] The air flow outlet of the air compressor 5 is divided into three routes: one route is connected to the upper part of the front storage tank 101 through the compressed air path valve 6 to supply air to the compressed air path; another route is connected to the first fluidizing air chamber 10125 through the first fluidizing air valve 10122; the third route is connected to the second fluidizing air chamber 10126 through the second fluidizing air valve 10124; the latter two routes supply air to the fluidizing air path. In order to prevent the powder from leaking into the fluidizing air chamber below when the fluidized bed mechanism 1012 is working, the structures of the first fluidizing plate 10121 and the second fluidizing plate 10123 are both plate-shaped structures formed by superimposing a perforated plate and a canvas.

[0060] In order to ensure that the amount of powder in the rear spreading tank 102 can meet the spreading requirements and avoid material accumulation when spreading powder, the powder spreading vehicle of this embodiment also includes a rear top material level switch 11, a side rear material level switch 12 and a front top material level switch 13; the rear top material level switch 11 is arranged at the top of the rear spreading tank 102; the side rear material level switch 12 is arranged below the central horizontal plane in the rear spreading tank 102; the front top material level switch 13 is arranged above the interior of the front storage tank 101; the above-mentioned compressed air circuit valve 6, the first fluidizing air valve 10122, the second fluidizing air valve 10124, the material delivery pipeline air valve 81, the rear top material level switch 11 and the side rear material level switch 12 are controlled in a correlated manner.

[0061] The exhaust device 9 is arranged on the rear spreading tank 102; in this embodiment, in order to prevent the dust generated during the material beating and feeding process from being discharged to the outside and polluting the air, a filter element is arranged on the exhaust device 9.

[0062] One end of the exhaust and air-communicating valve 10 is connected to the front storage tank 101, and the other end is connected to the rear spreading tank 102. The spreading device 2 is arranged at the rear lower part of the rear spreading tank 102; in this embodiment, the spreading device 2 is a metering roller, which is driven and controlled by a hydraulic system taken from the chassis power. The material gate assembly 3 is arranged below the spreading device 2, and is used to control the opening and closing of the material port to change the spreading width.

[0063] The powder spreading vehicle of the present embodiment has the following working process:

[0064] (1) Before spreading construction, open the exhaust air valve 10, the first material feeding pipeline valve 73 and the second material feeding pipeline valve 74, and the external feeding device feeds the powder to be spread into the front storage tank 101 and the rear spreading tank 102 through the feeding pipeline 7, so that the front storage tank 101 and the rear spreading tank 102 are filled with powder, and the feeding is completed. At the same time, close the exhaust air valve 10, the first material feeding pipeline valve 73 and the second material feeding pipeline valve 74 to isolate the front storage tank 101 and the rear spreading tank 102.

[0065] (2) When starting to spread, first open the material door assembly 3, start the metering roller at the set speed to spread the powder, and start the air compressor 5 at the same time. When the rear top material level switch 11 cannot detect the powder, open the compressed air circuit, open part of the fluidizing air circuit and the material conveying pipeline 8. In this way, the front storage tank 101 is a pressurized bin, and the rear spreading tank 102 is a normal pressure bin. By using the pressure difference, the powder in the front storage tank 101 is slowly transported to the rear spreading tank 102 for spreading; when the side rear material level switch 12 cannot detect the powder, open all the fluidizing air circuits and the material conveying pipeline 8, and quickly transport the powder in the front storage tank 101 to the rear spreading tank 102 for spreading; the compressed air entering the rear spreading tank 102 with the powder is filtered by the filter element and then discharged into the atmosphere.

[0066] The powder spreading vehicle top of the present embodiment is designed with a new feeding structure, which replaces the traditional structure using a screw feeder to feed materials. The cost is low and the technical problem of the existing powder spreading vehicle top using a screw feeder to feed materials, which is high in cost, is solved.

Claims

1. A powder spreading vehicle top, comprising a powder tank (1), a spreading device (2) and a material door assembly (3); Features: It also includes a tank body partition (4), a material punching pipeline (7) and a material conveying device; The tank partition (4) is arranged inside the powder tank (1), and the powder tank (1) is divided into a front storage tank (101) and a rear spreading tank (102) by the tank partition (4); the tank partition (4) is inclined toward the front of the powder tank (1), and the angle between the tank partition (4) and the horizontal axis of the front-rear direction of the powder tank (1) is greater than or equal to the dynamic repose angle of the powder to be spread; The material-beating pipeline (7) is provided with a first discharge port (71); the first discharge port (71) is located above the interior of the front storage tank (101); the feed port of the material-beating pipeline (7) is used to connect to a material-beating device; The material conveying device conveys the powder to be spread in the front storage tank (101) to the rear spreading tank (102); The spreading device (2) is arranged at the rear lower part of the rear spreading tank (102); The material door assembly (3) is arranged below the spreading device (2).

2. The powder spreading vehicle top according to claim 1, Features: The front storage tank (101) is a closed space when the material is being transported and spread; The material conveying device comprises an air compressor (5), a compressed air circuit valve (6), a material conveying pipeline (8), an exhaust device (9) and an exhaust connecting air valve (10); One end of the compressed air circuit valve (6) is in communication with the air flow outlet of the air compressor (5), and the other end is in communication with the upper part of the front storage tank (101); One end of the material delivery pipeline (8) is in communication with a front storage tank discharge port (1011) disposed below the front storage tank (101), and the other end is in communication with the upper portion of the rear spreading tank (102); The exhaust device (9) is arranged on the rear spreading tank (102); One end of the exhaust gas communication valve (10) is communicated with the front storage tank (101), and the other end is communicated with the rear spreading tank (102).

3. The powder spreading vehicle top according to claim 2, Features: A fluidized bed mechanism (1012) is arranged below the front storage tank (101); the air compressor (5) provides an air source for the fluidized bed mechanism (1012).

4. The powder spreading vehicle top according to claim 3, Features: It also includes a first inclined plate (1013) and a second inclined plate (1014); The fluidized bed mechanism (1012) comprises a first fluidizing plate (10121), a first fluidizing gas valve (10122), a second fluidizing plate (10123) and a second fluidizing gas valve (10124); The first inclined plate (1013) and the second inclined plate (1014) are respectively arranged on the left and right sides of the front storage tank (101) along the front-to-back direction of the powder tank (1); the first fluidizing plate (10121) and the second fluidizing plate (10123) are respectively arranged on the front and rear sides of the front storage tank (101); the first inclined plate (1013), the second inclined plate (1014), the first fluidizing plate (10121) and the second fluidizing plate (10123) form an inverted quadrangular pyramid; and the sum of the projected areas of the first fluidizing plate (10121) and the second fluidizing plate (10123) is greater than the area of ​​the bottom surface of the inverted quadrangular pyramid; The angles between the first inclined plate (1013) and the second inclined plate (1014) and the horizontal plane are both greater than or equal to the dynamic repose angle of the powder to be spread; the angles between the first fluidizing plate (10121) and the second fluidizing plate (10123) and the horizontal plane are both less than the dynamic repose angle of the powder to be spread; Below the first fluidizing plate (10121), the first fluidizing plate (10121) and the outer wall of the powder tank (1) form a first fluidizing air chamber (10125); below the second fluidizing plate (10123), the second fluidizing plate (10123), the outer wall of the powder tank (1) and the tank body partition (4) form a second fluidizing air chamber (10126); The air flow outlet of the air compressor (5) is divided into three paths: one path is connected to the upper part of the front storage tank (101) through the compressed air path valve (6); another path is connected to the first fluidizing air chamber (10125) through the first fluidizing air valve (10122); and the third path is connected to the second fluidizing air chamber (10126) through the second fluidizing air valve (10124); The front storage tank discharge port (1011) is located on the lower bottom surface of the inverted quadrangular pyramid.

5. The powder spreading vehicle top according to claim 4, Features: The structures of the first fluidizing plate (10121) and the second fluidizing plate (10123) are both plate-like structures formed by superimposing a perforated plate and a canvas.

6. The powder spreading vehicle top according to any one of claims 4 to 5, Features: It also includes a rear top material level switch (11), a side rear material level switch (12) and a front top material level switch (13); The rear top material level switch (11) is arranged at the top of the rear spreading tank (102); The side rear material level switch (12) is arranged below the central horizontal plane in the rear spreading tank (102); The front top material level switch (13) is arranged above the interior of the front storage tank (101); The material delivery pipeline (8) is provided with a material delivery pipeline air valve (81); The compressed air circuit valve (6), the first fluidizing air valve (10122), the second fluidizing air valve (10124), the material conveying pipeline valve (81), the rear top material level switch (11) and the side rear material level switch (12) are controlled in a linked manner.

7. The powder spreading vehicle top according to claim 6, Features: The material discharging pipeline (7) is also provided with a second material discharging port (72), a first material discharging pipeline valve (73) and a second material discharging pipeline valve (74), and the first material discharging port (71) has two or more; The second discharge port (72) is located above the interior of the rear spreading tank (102); The first material-beating pipeline valve (73) is arranged at the feed inlet of the material-beating pipeline (7) and is used to control the opening and closing of the entire material-beating pipeline (7); The second material discharging pipeline valve (74) is arranged between the first material discharging pipeline valve (73) and the second material discharging port (72) and is used to control the opening and closing of the second material discharging port (72).

8. The powder spreading vehicle top according to claim 7, Features: The exhaust device (9) is provided with a filter element.

9. The powder spreading vehicle top as claimed in claim 8, Features: It also includes a manhole (14) and a safety valve (15); The manhole (14) and the safety valve (15) are both arranged on the top of the front storage tank (101).

10. The powder spreading vehicle top according to claim 9, Features: There are two or more material conveying pipelines (8).

Images