Resin raw material preheating and weighing system

Abstract

The utility model relates to a resin raw material preheating and weighing system which comprises a plurality of preheating stirring tanks arranged in sequence, an oil heating system and a water heating system are connected to the preheating stirring tanks, discharging ports are formed in the lower portions of the preheating stirring tanks, the discharging ports are connected with a discharging header pipe through discharging branch pipes, and the discharging header pipe is connected with a heating system. The discharging header pipe is connected with a feeding port of the first weighing tank through a first pump body, a discharging pipeline is connected to the discharging header pipe in a bypass mode, and the discharging pipeline is connected with a feeding port of the second weighing tank through a second pump body. The system is provided with two sets of heating systems, so that different heating systems can be conveniently selected according to raw materials.

Description

Technical Field

[0001] This utility model relates to a resin raw material preheating and weighing system. Background Technology

[0002] In resin production, pre-powdered raw materials need to be heated to form a liquid so that they can be weighed and then fed into the subsequent reaction apparatus. Existing raw material heating tanks typically only have a single preheating system, such as an oil-based system. However, for raw materials with lower preheating temperatures, such as around 60°C, continuing to use an oil-based system increases costs. Purchasing a separate raw material tank with a hydrothermal system would be even more expensive. Combining both preheating systems into a single raw material tank would help reduce costs. Utility Model Content

[0003] The purpose of this invention is to provide a resin raw material preheating and weighing system, which has two heating systems to facilitate the selection of different heating systems according to the raw materials.

[0004] The technical solution of this utility model is as follows: a resin raw material preheating and weighing system, comprising a plurality of preheating mixing tanks arranged in sequence, wherein an oil heating system and a water heating system are connected to the preheating mixing tanks, and a discharge port is provided at the bottom of each preheating mixing tank. The discharge port is connected to the discharge main pipe via a discharge branch pipe. The discharge main pipe is connected to the inlet port of the first weighing tank via a first pump body. A discharge pipe is connected to the discharge main pipe, and the discharge pipe is connected to the inlet port of the second weighing tank via a second pump body.

[0005] Furthermore, the preheating mixing tank is a jacketed tank, with a stirring shaft with stirring blades vertically arranged inside the preheating mixing tank, and a drive motor for driving the stirring shaft is installed on the top of the preheating mixing tank.

[0006] Furthermore, the oil heating system includes a main heat transfer oil supply pipe, on which several supply branch pipes are provided. The upper and lower parts of the preheating mixing tank are respectively provided with heat transfer oil outlets and heat transfer oil inlets that communicate with their jacketed chambers. The supply branch pipes are connected to the heat transfer oil inlets of the corresponding preheating mixing tanks, and the heat transfer oil outlets are connected to the return oil main pipe via return branch pipes.

[0007] Furthermore, each of the oil supply branch pipes is equipped with an oil supply valve.

[0008] Furthermore, the hydrothermal system includes a hot water tank, a hot water supply main pipe is provided at the bottom of the hot water tank, a third pump body is provided on the hot water supply main pipe, the upper and lower parts of the preheating mixing tank are respectively provided with an outlet and an inlet connected to its jacketed chamber, the hot water supply main pipe is provided with a water supply branch pipe connected to the inlet, the outlet is connected to the return water main pipe via a return water branch pipe, and the return water main pipe is connected to the hot water tank.

[0009] Furthermore, each of the water supply branch pipes is equipped with a water supply valve.

[0010] Furthermore, each of the discharge branch pipes is equipped with a first feeding valve, the discharge main pipe is equipped with a second feeding valve on the side near the inlet end of the first pump body, the discharge main pipe is equipped with a third feeding valve on the end side near the first weighing tank, the discharge pipeline is connected to the side near the inlet end of the second feeding valve, the discharge pipeline is equipped with a fourth feeding valve on the inlet end side of the second pump body, and the discharge pipeline is equipped with a fifth feeding valve on the end near the second weighing tank.

[0011] Furthermore, both the first and second weighing tanks are equipped with discharge pipes at their bottoms.

[0012] Furthermore, the upper part of the preheating mixing tank is provided with a feed pipe and an air inlet pipe that enter its inner cavity, and the bottom of the preheating mixing tank is also provided with a discharge pipe.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. The preheating mixing tank of this system integrates oil heating and water heating systems, which makes it convenient to select different heating systems according to the raw materials to be preheated, thus helping to save costs.

[0015] 2. The system is equipped with a backup second weighing tank, which can be used to weigh materials when the first weighing tank fails or is at full load.

[0016] 3. The preheating mixing tank of this system is equipped with an air inlet pipe, which facilitates the introduction of gas at a certain pressure into the preheating mixing tank, making the raw material discharge faster. Attached Figure Description

[0017] Figure 1 This is a system structure diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the preheating mixing tank of this utility model;

[0019] In the diagram: 1-Preheating mixing tank; 101-Discharge port; 102-Mixing blades; 103-Mixing shaft; 104-Drive motor; 105-Heat transfer oil outlet; 106-Heat transfer oil inlet; 107-Water inlet; 108-Water outlet; 109-Feed pipe; 110-Air inlet pipe; 111-Discharge pipe; 201-Heat transfer oil main supply pipe; 202-Oil supply branch pipe; 203-Oil return branch pipe; 204-Oil return main pipe; 205-Oil supply valve; 301-Heat... Water tank 302 - Hot water supply main pipe 303 - Third pump body 304 - Water supply branch pipe 305 - Return water branch pipe 306 - Water supply valve 4 - Discharge branch pipe 401 - First feed valve 5 - Discharge main pipe 501 - Second feed valve 502 - Third feed valve 6 - First pump body 7 - First weighing tank 8 - Discharge pipe 801 - Fourth feed valve 802 - Fifth feed valve 9 - Second pump body 10 - Second weighing tank Detailed Implementation

[0020] To make the above-mentioned features and advantages of this utility model more easily understood, specific embodiments are described below in conjunction with the accompanying drawings, but this utility model is not limited thereto.

[0021] refer to Figure 1 and Figure 2

[0022] A resin raw material preheating and weighing system includes three preheating mixing tanks 1 arranged sequentially. Each preheating mixing tank is connected to an oil-heating system and a water-heating system. Each preheating mixing tank has a discharge port 101 at its lower part. The discharge port is connected to a discharge main pipe 5 via a discharge branch pipe 4. The discharge main pipe is connected to the inlet port of a first weighing tank 7 via a first pump body 6. A discharge pipe 8 is connected to the discharge main pipe, and the discharge pipe is connected to the inlet port of a second weighing tank 10 via a second pump body 9. By providing both oil-heating and water-heating systems, different preheating systems can be used depending on the raw material.

[0023] In this embodiment, in order to facilitate the preheating of the preheating mixing tank, the preheating mixing tank is a jacketed tank. A stirring shaft 103 with stirring blades 102 is vertically arranged inside the preheating mixing tank. A drive motor 104 for driving the stirring shaft is installed on the top of the preheating mixing tank, so that the raw materials can be better stirred evenly by the stirring shaft.

[0024] In this embodiment, the oil-heating system includes a main heat transfer oil supply pipe 201 connected to a heat transfer oil furnace. Several branch pipes 202 are installed on the main heat transfer oil supply pipe. The upper and lower parts of the preheating mixing tank are respectively provided with heat transfer oil outlets 105 and inlets 106 communicating with their respective jacketed chambers. The branch pipes are connected to the corresponding heat transfer oil inlets of the preheating mixing tank. The heat transfer oil outlets are connected to the main return pipe 204 via return branch pipes 203. The main return pipe is connected to the heat transfer oil furnace. Thus, the preheating mixing tank is heated by heat transfer oil. Heat transfer oil heating is suitable for situations where the raw materials need to be heated to a high temperature, such as above 100°C.

[0025] In this embodiment, in order to facilitate the control of whether each preheating mixing tank is heated by heat transfer oil, each oil supply branch pipe is equipped with an oil supply valve 205.

[0026] In this embodiment, the hydrothermal system includes a hot water tank 301 for heating and storing hot water. A hot water supply main pipe 302 is located at the bottom of the hot water tank. A third pump body 303 is installed on the hot water supply main pipe. The upper and lower parts of the preheating mixing tank are respectively provided with an outlet 108 and an inlet 107 communicating with its jacketed chamber. A water supply branch pipe 304 connected to the inlet is provided on the hot water supply main pipe. The outlet is connected to the return main pipe via a return branch pipe 305. The return main pipe is connected to the hot water tank. This allows for preheating via the hot water preheating mixing tank. Hydrothermal preheating is suitable for raw material temperatures below 100°C, for example, heating the preheating mixing tank to 55°C.

[0027] In this embodiment, in order to facilitate the control of whether each preheating mixing tank is heated by hot water, a water supply valve 306 is provided on each water supply branch pipe.

[0028] In this embodiment, to control the discharge from each preheating mixing tank, a first feeding valve 401 is installed on each discharge branch pipe, a second feeding valve 501 is installed on the side of the main discharge pipe near the inlet end of the first pump body, a third feeding valve 502 is installed on the end of the main discharge pipe near the first weighing tank, the discharge pipe is connected to the side near the inlet end of the second feeding valve, a fourth feeding valve 801 is installed on the side of the discharge pipe near the inlet end of the second pump body, and a fifth feeding valve 802 is installed on the end of the discharge pipe near the second weighing tank. This allows for the convenient delivery of different raw materials to the first or second weighing tank by opening different feeding valves. For example, if... Figure 1The raw material from the first preheating mixing tank on the left is fed into the first weighing tank. The first feeding valve on the discharge branch pipe connected to the preheating mixing tank needs to be opened, the other first feeding valves closed, the fourth feeding valve and the fifth feeding valve closed, and the second feeding valve, the third feeding valve and the first pump body opened. At the same time, gas with a certain pressure is introduced into the preheating mixing tank, so that the raw material output of the preheating mixing tank can be realized.

[0029] In this embodiment, both the first and second weighing tanks are equipped with discharge pipes at their bottoms to deliver materials to the next stage. The first weighing tanks are connected to the frame via load cells to weigh the input raw materials.

[0030] In this embodiment, the upper part of the preheating mixing tank is provided with a feed pipe 109 and an air inlet pipe 110 that enter its inner cavity, so as to replenish raw materials into the preheating mixing tank through the feed pipe, or to pour raw materials into the preheating mixing tank through a port provided on the top of the preheating mixing tank and having a cap. A gas with a certain pressure, such as nitrogen or other gases that do not react with the raw materials, is introduced into the preheating mixing tank through the air inlet pipe, thereby allowing the raw materials in the preheating mixing tank to be output more effectively.

[0031] In this embodiment, a discharge pipe 111 is also provided at the bottom of the preheating mixing tank to discharge residual materials in the preheating mixing tank.

[0032] In this embodiment, a liquid level sensor is installed inside the preheating mixing tank, and a liquid level gauge is also installed in the preheating mixing tank.

[0033] In a preferred embodiment, the raw materials in the three preheating mixing tanks are all the same. Different raw materials can also be filled in the three preheating mixing tanks, but when conveying the raw materials, it is necessary to estimate the amount of the previous type of raw material remaining in the pipeline to ensure the weight of the raw material entering the weighing tank is relatively accurate.

[0034] All pipes in both oil-heating and water-heating systems are wrapped with insulation to prevent heat loss.

[0035] When switching between oil-heating and water-heating systems, the water and oil in the jacket of the preheating mixing tank must be drained before switching to the other preheating system.

[0036] If the terms "first" and "second" are used in the above description to define the components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of distinguishing the components in the description. Unless otherwise stated, the above terms have no special meaning.

[0037] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws) or a non-detachable fixed connection (e.g., riveting or welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured using a casting process) (except where it is obviously impossible to use an integral forming process).

[0038] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this utility model to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0039] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0040] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A resin raw material preheating and weighing system, characterized in that, The preheating stirring tank is a sandwich tank, a stirring shaft with stirring blades is vertically arranged in the preheating stirring tank, and a driving motor for driving the stirring shaft is installed on the top of the preheating stirring tank.

2. The resin feedstock pre-heat weighing system of claim 1, wherein, The oil heating system comprises a heat-conducting oil supply main pipe, a plurality of oil supply branch pipes are arranged on the heat-conducting oil supply main pipe, the upper and lower parts of the preheating stirring tank are correspondingly provided with heat-conducting oil outlets and heat-conducting oil inlets which are connected with the sandwich chambers, the oil supply branch pipes are connected with the heat-conducting oil inlets of the corresponding preheating stirring tanks, and the heat-conducting oil outlets are connected with a heat-conducting oil return main pipe through heat-conducting oil return branch pipes.

3. The resin feedstock pre-heat weighing system of claim 2, wherein, The oil supply branch pipes are provided with oil supply valves.

4. The resin feedstock pre-heat weighing system of claim 3, wherein, The water heating system comprises a hot water tank, the bottom of the hot water tank is provided with a hot water supply main pipe, the hot water supply main pipe is provided with a third pump body, the upper and lower parts of the preheating stirring tank are correspondingly provided with water outlets and water inlets which are connected with the sandwich chambers, the hot water supply main pipe is provided with water supply branch pipes which are connected with the water inlets, the water outlets are connected with a water return main pipe through water return branch pipes, and the water return main pipe is connected with the hot water tank.

5. The resin feedstock pre-heat weighing system of claim 2, 3 or 4, wherein, The water supply branch pipes are provided with water supply valves.

6. The resin feedstock pre-heat weighing system of claim 5, wherein, The discharge branch pipes are provided with first feeding valves, the discharge main pipe is provided with a second feeding valve on the side of the feeding end close to the first pump body, the discharge main pipe is provided with a third feeding valve on the side of the end part close to the first weighing tank, the discharge pipeline is connected on the side of the feeding end close to the second feeding valve, the discharge pipeline is provided with a fourth feeding valve on the side of the feeding end of the second pump body, and the discharge pipeline is provided with a fifth feeding valve on the end part close to the second weighing tank.

7. The resin feedstock pre-heat weighing system of claim 1, wherein, The bottom of the first weighing tank and the second weighing tank is provided with a discharge pipe.

8. The resin raw material preheating and weighing system according to claim 1 or 7, characterized by The upper part of the preheating stirring tank is provided with a feeding pipe and an air inlet pipe which penetrate into the inner cavity of the preheating stirring tank, and the bottom of the preheating stirring tank is further provided with a discharging pipe.

9. The resin feedstock pre-heat weighing system of claim 1, wherein, ​

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