Epoxy resin batching device for steel bridge deck pavement

Abstract

The utility model relates to the technical field of epoxy asphalt batching equipment, and discloses an epoxy resin batching device for paving a steel bridge deck, which solves the technical problems in the prior art and comprises a storage tank, a metering and weighing system, a conveying system and a central control system, the storage tank comprises a first storage tank A and a second storage tank B; the metering and weighing system comprises a first metering pump a, a second metering pump b and a metering hopper; the conveying system is installed between the metering hopper and a mixing cylinder of a mixing plant and used for providing power to feed and add a mixture in the metering hopper into the mixing cylinder. The conveying system comprises a pneumatic control valve, a conveying pump, a gas-liquid mixer, an electromagnetic valve and a compressed air source. And the central control system is used for controlling the operation of the batching device and controlling the completion of the circulation control period. According to the technical scheme, the novel epoxy resin adding equipment is researched and developed, is used for circularly burdening, automatically forms a burdening proportion and is high in working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to epoxy asphalt batching equipment technical field, more specifically, it relates to epoxy resin batching device for steel bridge deck pavement. BACKGROUND

[0002] Steel bridge is more and more widely used due to the advantages of high strength, large span, suitable for factory manufacturing and installation and convenient transportation. However, steel has the disadvantages of easy corrosion, large deformation and poor adhesion with asphalt mixture. Therefore, epoxy asphalt is generally used for paving steel bridge deck. The road performance of epoxy asphalt is more excellent than traditional asphalt mixture, and it has good mechanical properties, temperature stability and deformability. It is a kind of thermosetting material with high strength and rigidity. After curing, the road surface is not easy to produce rutting, bumping and other damages under high temperature conditions.

[0003] The epoxy resin in epoxy asphalt mixture is divided into main agent (A) and curing agent (B), which are quantitatively packaged in square or round iron barrels. The general proportion is A:B=56:44. The traditional epoxy resin adding equipment is mainly composed of a storage tank, a pneumatic three-way valve and a delivery pump. The main agent (A) and the curing agent (B) are manually put into the storage tank according to the group. When there is no control signal input, the pneumatic three-way valve points to the storage tank, and the epoxy resin is circulated and delivered to the storage tank by the delivery pump. When there is a control signal input, the pneumatic three-way valve switches and points to the asphalt mixing building mixing cylinder, and the epoxy resin is delivered to the asphalt mixing building mixing cylinder by the delivery pump. It has the following disadvantages:

[0004] 1. The epoxy resin in the storage tank cannot be added during internal circulation and delivery to the mixing cylinder, and the available time is short.

[0005] 2. Since the epoxy resin is quantitatively packaged in metal barrels, the addition weight must be measured according to the group, and the change of the weight of each batch of asphalt mixture is limited.

[0006] 3. Due to the height of the mixing building, the pipeline between the mixing cylinder and the three-way valve is always filled with epoxy resin, and the weight can reach 100-120 kg. According to the calculation of 100,000 yuan per ton, the loss of each shift is more than 10,000 yuan, and the waste is large.

[0007] 4. More than 10 skilled workers are needed, and the labor cost is large.

[0008] 5. The cooperation with the mixing building requires high degree, and a special person needs to be arranged for communication. The production efficiency of asphalt mixture is low, and the hourly output is less than 80 tons.

[0009] 6. The feeding port area is too large, and the human skin is easy to contact epoxy resin or inhale epoxy resin gas, which can cause great harm to the human body.

[0010] In view of the above problems, a new epoxy resin adding equipment needs to be developed. Technical Contents

[0011] In view of the technical problems in the background art, the present application develops a new epoxy resin adding equipment for circulating batching, which has high working efficiency.

[0012] To achieve the above object, the present application provides the following technical scheme:

[0013] The epoxy resin batching device for steel bridge deck pavement comprises:

[0014] The storage tank comprises a first storage tank A and a second storage tank B;

[0015] The metering and weighing system comprises a first metering pump a, a second metering pump b and a metering hopper; the outlets of the first storage tank A and the second storage tank B are connected to the metering hopper through pipelines and are used for respectively conveying the main agent and the curing agent to the metering hopper; the first metering pump a is installed on the pipeline between the first storage tank A and the metering hopper, and the second metering pump b is installed on the pipeline between the second storage tank B and the metering hopper;

[0016] The conveying system is installed between the metering hopper and the mixing tower mixing drum to provide power for feeding the mixed material in the metering hopper into the mixing drum, and comprises a pneumatic control valve, a conveying pump, a gas-liquid mixer, an electromagnetic valve and a compressed air source; the pneumatic control valve is used for controlling the opening and closing of the metering hopper; the conveying pump provides conveying power for transferring the mixed material from the metering hopper to the gas-liquid mixer; the compressed air source provides compressed air to the gas-liquid mixer to blow the mixed material into the mixing drum; and the electromagnetic valve is used for controlling the opening and closing of the compressed air circuit.

[0017] Further, the first storage tank A and the second storage tank B are provided with stirrers and heaters to prevent condensation of the materials after long-term storage.

[0018] Further, the pipeline between the first storage tank A and the metering hopper is provided with a first control valve a1 which is turned on and off simultaneously with the first metering pump a, and the pipeline between the second storage tank B and the metering hopper is provided with a second control valve b1 which is turned on and off simultaneously with the second metering pump b.

[0019] Further, the first control valve a1 and the second control valve b1 are used for being turned on and off simultaneously with the first metering pump a and the second metering pump b respectively, so as to reduce the influence of the inertia of the first metering pump a and the second metering pump b on the conveying precision.

[0020] Furthermore, the present invention provides that the metering hopper is equipped with four weighing sensors, which are used to weigh the mixture in the metering hopper.

[0021] Furthermore, the present invention provides that the metering hopper is equipped with a stirrer for thoroughly stirring the liquid after weighing.

[0022] Furthermore, the present invention further includes a compressed air regulating valve, which is used to regulate the supply and blowing pressure of compressed air.

[0023] In summary, this utility model has the following beneficial effects:

[0024] (1) The equipment is reasonably designed and has a simple structure. Manual feeding can be done at any time, which improves the problem of short operation time when feeding traditional models and is not restricted by the system working sequence.

[0025] (2) The feeding port is equipped with a material extraction device to avoid material contact with the human body and greatly reduce occupational health hazards to workers.

[0026] (3) The use of compressed air pneumatic conveying system greatly improves conveying efficiency and reduces mechanical failure rate. Each time the activation signal is triggered, the blowing system thoroughly blows the conveying pipeline, reducing material storage in the pipeline. Only 1-2KG is stored per shift, greatly reducing waste.

[0027] (4) The device is easy to operate and easy to feed materials. Only 3-4 people are needed, saving a lot of labor. Attached Figure Description

[0028] Figure 1 Schematic diagram of an epoxy resin mixing device system for steel bridge deck paving.

[0029] Reference numerals: 1. Extraction device; 2. Metering hopper; 2-1. Agitator; 3. Pneumatic control valve; 4. Transfer pump; 5. Gas-liquid mixer; 6. Compressed air regulating valve; 7. Solenoid valve; 8. Compressed air source;

[0030] First storage tank A;

[0031] Second storage tank B;

[0032] First metering pump a, first control valve a1;

[0033] Second metering pump b, second control valve b1. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0035] The application relates to an epoxy resin batching device for steel bridge deck pavement Figure 1 As shown in the drawings, the epoxy resin batching device for steel bridge deck pavement comprises a storage tank, a metering and weighing system, a conveying system and a central control system.

[0036] The storage tank comprises a first storage tank A and a second storage tank B; the first storage tank A and the second storage tank B are both provided with a pumping device 1 for pumping liquid material in an epoxy resin packaging container into the storage tank, or the pumping device 1 is not installed, and manual feeding is adopted to feed the first storage tank A and the second storage tank B, which is not restricted by the system working time sequence compared with the prior art, and manual feeding can be performed at any time.

[0037] The metering and weighing system comprises a first metering pump a, a second metering pump b and a metering hopper 2; the outlets of the first storage tank A and the second storage tank B are both connected to the metering hopper 2 through pipelines and used for conveying a main agent and a curing agent to the metering hopper 2 respectively; the first metering pump a is installed on the pipeline between the first storage tank A and the metering hopper 2, and the second metering pump b is installed on the pipeline between the second storage tank B and the metering hopper 2. The metering pump adopts a flow pump in the prior art, and the weight of the conveyed material is controlled through the conversion relationship between the flow volume and the weight, so that the proportioning ratio of the material is guaranteed. The first storage tank A and the second storage tank B are provided with a stirrer and a heater, which are used for preventing the material from condensing after long-time storage.

[0038] Meanwhile, the pipeline between the first storage tank A and the metering hopper 2 is provided with a first control valve a1 which is turned on and off at the same time as the first metering pump a, and the pipeline between the second storage tank B and the metering hopper 2 is provided with a second control valve b1 which is turned on and off at the same time as the second metering pump b. The first control valve a1 and the second control valve b1 are used for being turned on and off at the same time as the first metering pump a and the second metering pump b respectively, so as to reduce the influence of the inertia of the first metering pump a and the second metering pump b on the conveying accuracy.

[0039] The conveying system is installed between the metering hopper 2 and a mixing building mixing cylinder to provide power for feeding the mixed material in the metering hopper 2 into the mixing cylinder, and the conveying system comprises a pneumatic control valve 3, a conveying pump 4, a gas-liquid mixer 5, an electromagnetic valve 7 and a compressed air source 8. The pneumatic control valve 3 is used for controlling the opening and closing of the metering hopper 2, the conveying pump 4 provides conveying power for transferring the mixed material from the metering hopper 2 to the gas-liquid mixer 5, the compressed air source 8 provides compressed air to the gas-liquid mixer 5 to blow the mixed material into the mixing cylinder, and the electromagnetic valve 7 is used for controlling the opening and closing of the compressed air circuit.

[0040] The metering hopper 2 is provided with four high-precision cantilever beam type weighing sensors symmetrically distributed, which are used to weigh the weight of the mixed material in the metering hopper 2. When the real-time weighing weight of the metering hopper 2 approaches the set weight, the metering pump is closed in advance according to the set drop weight, greatly improving the metering accuracy. At the same time, the weighing value of the metering hopper 2 is compared with the sum of the set weight values (obtained by converting the flow volume) of the first metering pump a and the second metering pump b, and is used as a reference for adjusting the new set weight values of the first metering pump a and the second metering pump b. For example, the difference between the sum of the weighing value of the metering hopper 2 and the set weight values of the first metering pump a and the second metering pump b is calculated. When the difference is less than or equal to a threshold value, it indicates that the loss of the conveying process is small, and there is no need to adjust the conveying amount of the first metering pump a and the second metering pump b; when the difference is greater than the threshold value, it indicates that the loss of the conveying process is large, and the conveying amount of the first metering pump a and the second metering pump b needs to be adjusted to ensure that the weighing value of the metering hopper 2 can approach the set weight value.

[0041] In addition, the metering hopper 2 is provided with a stirrer 2-1 for fully stirring the liquid after weighing.

[0042] The central control system is used to control the operation of the batching device, and is built by a PLC controller. In an embodiment, the central control system is composed of a PLC controller, a touch screen, a driver and control software required for installation, and can convert a weight signal into an electric signal, input and output various parameters, protect and control a motor, etc. The central control system is the command center of the whole batching device, and can automatically send a signal to the adding device to activate an instruction according to the working condition of the stirring station as needed, to ensure that various working positions are coordinated with each other and accurate. An operator can manually or automatically select a measurement mode (time or weighing), select each component manually, set parameters, etc. through the touch screen. Meanwhile, the system also has a fault alarm function, and when a fault occurs in the equipment, an audible and visual alarm signal is sent, and an operator can take timely measures through the fault information on the touch screen to ensure the orderly production of safe production

[0043] Specifically, when the automatic control button is started, the central control system controls the first metering pump a to convey the main agent to the metering hopper 2 according to the set weight, stops conveying when the set value is reached, and delays for 3 seconds; the central control system controls the second metering pump b to convey the curing agent to the metering hopper 2 according to the set weight, stops conveying when the set value is reached, and the batching device enters a waiting delivery state; when the mixing drum needs to add mixed material, the central control system controls the pneumatic control valve 3, the conveying pump 4 and the electromagnetic valve 7 to start, and the pneumatic control valve 3 and the conveying pump 4 are closed after starting for a set time, and the central control system controls the electromagnetic valve 7 to be closed after a delay of 5 seconds; thus, a cycle control period of the central control system is completed.

[0044] To control the compressed air pressure value, the conveying system further comprises a compressed air regulating valve 6 for regulating the supply blowing pressure value of the compressed air.

[0045] The epoxy resin batching device for steel bridge deck pavement of the utility model is debugged on site, and the performance parameters are as follows:

[0046]

[0047] According to the epoxy resin batching device for steel bridge deck pavement, the embodiment further provides an epoxy resin batching and adding process for steel bridge deck pavement, including the following steps:

[0048] Epoxy resin main agent and curing agent are added to the two storage tanks;

[0049] The automatic control button is started;

[0050] The first metering pump a delivers the main agent to the metering hopper 2 according to the set weight, and stops delivering when the set value is reached;

[0051] After a delay of 3 seconds, the second metering pump b delivers the curing agent to the metering hopper 2 according to the set weight, and stops delivering when the set value is reached, and the batching device enters a waiting delivery state;

[0052] When the mixing drum needs to add mixed material, the pneumatic control valve 3, the delivery pump 4 and the electromagnetic valve 7 are started, the pneumatic control valve 3 and the delivery pump 4 are closed after a set time, and the control electromagnetic valve 7 is closed after a delay of 5 seconds;

[0053] At this point, a cycle of the epoxy resin batching and adding process is completed, the whole batching device is seamlessly connected with the mixing station control system, forms a complete control system, and ensures that the material batching, blowing system and mixing station system are reasonably matched.

[0054] The above is only a preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above embodiment, and any technical solution under the idea of the utility model belongs to the protection scope of the utility model. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principle of the utility model are also regarded as the protection scope of the utility model.

Claims

1. An epoxy resin dispensing device for steel bridge deck pavement, characterized by, The application relates to a metering and conveying system for a mixing tower, which comprises the following components: a storage tank, which comprises a first storage tank (A) and a second storage tank (B); a metering and weighing system, which comprises a first metering pump (a), a second metering pump (b) and a metering hopper (2); the outlets of the first storage tank (A) and the second storage tank (B) are connected to the metering hopper (2) through pipelines and used for respectively conveying a main agent and a curing agent to the metering hopper (2); the first metering pump (a) is installed on the pipeline between the first storage tank (A) and the metering hopper (2), and the second metering pump (b) is installed on the pipeline between the second storage tank (B) and the metering hopper (2); a conveying system, which is installed between the metering hopper (2) and a mixing tower mixing drum and used for providing power to throw the mixture in the metering hopper (2) into the mixing drum; the conveying system comprises a pneumatic control valve (3) used for controlling the opening and closing of the metering hopper (2), a conveying pump (4) providing conveying power for transferring the mixture from the metering hopper (2) to a gas-liquid mixer (5), a compressed air source (8) providing compressed air to the gas-liquid mixer (5) to blow the mixture into the mixing drum, and an electromagnetic valve (7) used for controlling the opening and closing of the compressed air circuit.

2. An epoxy resin formulation for steel bridge deck pavement according to claim 1, characterized in that: The first storage tank (A) and the second storage tank (B) are provided with stirrers and heaters, which are used for preventing the materials from being condensed after long-time storage.

3. An epoxy resin formulation for steel bridge deck pavement according to claim 1, characterized in that: A first control valve (a1) is installed on the pipeline between the first storage tank (A) and the metering hopper (2) and is turned on and off at the same time as the first metering pump (a), and a second control valve (b1) is installed on the pipeline between the second storage tank (B) and the metering hopper (2) and is turned on and off at the same time as the second metering pump (b).

4. An epoxy resin formulation for steel bridge deck pavement according to claim 3, characterized in that: The first control valve (a1) and the second control valve (b1) are used for being turned on and off at the same time as the first metering pump (a) and the second metering pump (b) respectively, so that the inertia of the first metering pump (a) and the second metering pump (b) can be reduced to reduce the influence on conveying precision.

5. An epoxy resin formulation for steel bridge deck pavement according to claim 1, characterized in that: The metering hopper (2) is provided with four weighing sensors, which are used for weighing the weight of the mixture in the metering hopper (2).

6. An epoxy resin formulation for steel bridge deck pavement according to claim 5, characterized in that: The metering hopper (2) is provided with a stirrer (2-1), which is used for fully stirring the liquid after weighing and metering.

7. An epoxy resin formulation for steel bridge deck pavement according to claim 1, characterized in that: The conveying system further comprises a compressed air adjusting valve (6), which is used for adjusting the blowing pressure value of the compressed air.

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