Fully automatic polyurethane foam machine for on-site patching

Abstract

This utility model relates to the field of on-site repair of insulated pipes, specifically a fully automatic polyurethane foaming machine for on-site repair. The inlet ends of the black and white material tanks are connected to the outlet ends of the black and white material barrels via pipes II and I, respectively. The outlet ends are connected to the inlet ends of the black and white material switching unit via pipes VI and III, respectively. The inlet ends of the black and white material cylinders are also connected to the outlet ends of the black and white material switching unit via pipes V and IV, respectively. The inlet end of the mixing nozzle is connected to the white material switching unit and the black material switching unit via pipes VII and VII, respectively. The outlet end of the hydraulic station is connected to the outlet end of the mixing nozzle via pipe IX, and its inlet end is first connected to the outlet end of the mixing nozzle via pipe X, providing power for opening and closing the mixing nozzle. This utility model solves the problems of high difficulty in operation, low efficiency, and difficulty in guaranteeing quality in existing manual foaming machines for repair.

Description

Technical Field

[0001] This utility model relates to the field of field-applied fully automatic polyurethane foaming machine for on-site joint repair, and particularly to a fully automatic polyurethane foaming machine for on-site joint repair. Background Technology

[0002] Currently, on-site repair of insulation pipe joints uses a manual foaming machine for polyurethane injection. However, manual foaming machine repair has the following problems:

[0003] 1. It requires manual operation. The raw material ratio and mixing process need to be calculated manually and timed by yourself. This will cause calculation errors and a series of deviations due to lapses in concentration.

[0004] 2. Production speed is relatively slow, limited by manual operation and time;

[0005] 3. Due to human factors, product quality may fluctuate and it is difficult to guarantee consistency, which will inevitably have an impact on product quality.

[0006] 4. Operators need to have certain technical knowledge and experience to ensure correct proportions and operation, which places higher demands on personnel;

[0007] In view of the problems existing in the above-mentioned existing technologies, it is necessary to research and design a new type of fully automatic polyurethane foaming machine for on-site patching, so as to overcome the problems existing in the existing technologies. Summary of the Invention

[0008] In view of the technical problems of manual foaming machine patching, such as high difficulty in operation, low efficiency and difficulty in guaranteeing quality, the present invention provides a fully automatic polyurethane foaming machine for on-site patching.

[0009] The technical means adopted in this utility model are as follows:

[0010] A polyurethane foaming machine for on-site patching includes: a white material tank, a black material tank, a white material raw material barrel, a black material raw material barrel, a white material switching unit, a black material switching unit, a mixing nozzle, a hydraulic station, and a power control cabinet;

[0011] Furthermore, the inlet end of the white material tank is connected to the outlet end of the white material raw material barrel through pipeline I, and the outlet end is connected to the inlet end of the white material switching unit through pipeline III.

[0012] Furthermore, the inlet end of the white material cylinder is also connected to the outlet end of the white material switching unit through pipe IV;

[0013] Furthermore, the inlet end of the black material tank is connected to the outlet end of the black material raw material barrel through pipe II, and the outlet end is connected to the inlet end of the black material switching unit through pipe VI.

[0014] Furthermore, the inlet end of the black material tank is also connected to the outlet end of the black material switching unit via pipeline V;

[0015] Furthermore, the inlet end of the mixing nozzle is connected to the white material switching unit and the black material switching unit via pipe VII and pipe VII, respectively;

[0016] Furthermore, the outlet end of the hydraulic station is connected to the outlet end of the mixing nozzle through pipeline IX, and the inlet end is first connected to the outlet end of the mixing nozzle through pipeline X to provide power for opening and closing the mixing nozzle.

[0017] Furthermore, the white material switching unit and the black material switching unit are connected to the power control cabinet.

[0018] Furthermore, a valve is installed on pipeline IV to control the flow rate between the white material cylinder and the white material switching unit;

[0019] Furthermore, a filter is installed on pipeline IV to filter the fluid inside the pipeline;

[0020] Furthermore, a white material metering pump is installed on pipeline IV to provide power for the entire white material flow.

[0021] Furthermore, valves are installed on pipeline V to control the flow rate between the return cylinder and the black material switching unit;

[0022] Furthermore, a filter is installed on pipeline V to filter the fluid inside the pipeline;

[0023] Furthermore, a metering pump for both white and black materials is installed on pipeline V to provide power for the entire flow of black materials.

[0024] Furthermore, each of the white material tank and the black material tank is equipped with a level gauge to measure the liquid level inside the tank.

[0025] Furthermore, each of the white and black material tanks is equipped with a safety valve to prevent excessive pressure inside the tank and to control its own pressure.

[0026] Furthermore, the power control cabinet is connected to the white material metering pump and the black material metering pump, and provides 380V AC power.

[0027] Furthermore, the power control cabinet provides 220V power to the white material switching unit and the black material switching unit.

[0028] The present invention includes the following steps:

[0029] 1. Raw material preparation

[0030] The raw materials for polyurethane foam are black and white materials. The black material tank and the white material tank are supplied with raw materials to the black material tank and the white material tank respectively through pipeline I and pipeline II. The black and white material tanks are equipped with level gauges to display the real-time liquid level. The black and white material tanks are also equipped with safety valves to prevent excessive pressure inside the tank and to release pressure in time.

[0031] 2. Raw material conveying

[0032] The black material tank and the white material tank are powered by the black material metering pump and the white material metering pump, respectively. They form a circulation loop through pipelines VI and III, and pipelines V and IV at the black material switching unit and the white material switching unit. The circulation loop is controlled by valves and filters for flow regulation and filtration.

[0033] 3. Mixing raw materials

[0034] The switching between the black material switching unit and the white material switching unit can control the circulation and mixing of the black material raw materials. When the switching unit is switched to the mixing position, the black and white materials enter the mixing nozzle through the black and white material switching unit via pipelines VII and VIII to begin mixing. The mixing nozzle is powered by the hydraulic station, and hydraulic oil is supplied and returned through pipelines IX and X.

[0035] 4. Foaming reaction

[0036] The mixed black and white materials are quickly fed into the forming equipment for straight pipes and fittings on site. Here, the black and white materials undergo a chemical reaction to generate polyurethane foam, while releasing carbon dioxide gas, causing the foam to expand. After the foaming reaction, the foam gradually expands and solidifies in the mold. The curing time depends on the raw material formula and environmental conditions, and usually ranges from a few minutes to tens of minutes.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] 1. The fully automatic polyurethane foaming machine for on-site patching provided by this utility model has a high degree of automation: the system is controlled by PLC, and the patching specifications and length are manually input. The system automatically calculates the required foaming volume. Based on the flow rate of black and white materials, the PLC calculates the feeding time, reducing manual intervention and improving production efficiency and consistency.

[0039] 2. The fully automatic polyurethane foaming machine for on-site patching provided by this utility model features precise proportioning and control: the variable frequency pump can adjust the ratio of black and white materials, and the supply of each material can be precisely adjusted by controlling the output frequency of the frequency converter to achieve a black-white material ratio of 1-1.5:1, thereby achieving the required precise adjustment. ， The produced foam products have high consistency.

[0040] 3. The fully automatic polyurethane foaming machine for on-site patching provided by this utility model has the following production process monitoring: The automation system can monitor various parameters in the production process in real time, such as temperature sensors, and monitor the real-time temperature of the foaming machine or the material. Based on the feedback signal of the temperature sensor, it automatically adjusts the working state of the electric heater or cooling system to achieve cyclic heating to maintain the set temperature range.

[0041] 4. The fully automatic polyurethane foaming machine for on-site patching provided by this utility model reduces waste: Due to precise proportioning and automatic control, the proportioning is strictly in accordance with the desired ratio, and the fully automatic polyurethane foaming machine can reduce the waste of raw materials and reduce production costs.

[0042] 5. The fully automatic polyurethane foaming machine for on-site joint repair provided by this utility model is easy to operate: Compared with traditional foaming machines, fully automated equipment is usually easier to operate. Simply input the diameter and length of the pipe to be repaired, without any other calculation operations, which reduces the training cost and time for operators.

[0043] 6. The fully automatic polyurethane foaming machine for on-site patching provided by this utility model has fast and stable PLC calculation, can work continuously, and has a short production cycle.

[0044] In summary, the technical solution of this utility model solves the problems of high difficulty, low efficiency, and difficulty in guaranteeing quality in the operation of manual foaming machines for patching. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a perspective view of the present utility model;

[0047] Figure 2 This is a diagram illustrating the present utility model;

[0048] Figure 3 This is a system diagram of the present utility model.

[0049] In the diagram: 1. White material tank; 2. Black material tank; 3. White material raw material barrel; 4. Black material raw material barrel; 5. White material switching unit; 6. Black material switching unit; 7. Mixing nozzle; 8. Hydraulic station; 9. Valve; 10. Filter; 11. Level gauge; 12. Safety valve; 13. White material metering pump; 14. Black material metering pump; 15. Power control cabinet. Detailed Implementation

[0050] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and implementing regulations.

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0052] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0053] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0054] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0055] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0056] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0057] like Figure 1 , 2As shown, this utility model provides a polyurethane foaming machine for on-site patching, comprising: a white material tank 1, a black material tank 2, a white material raw material barrel 3, a black material raw material barrel 4, a white material switching unit 5, a black material switching unit 6, a mixing nozzle 7, a hydraulic station 8, and a power control cabinet 15; the inlet end of the white material tank 1 is connected to the outlet end of the white material raw material barrel 3 via pipe I, and the outlet end is connected to the inlet end of the white material switching unit 5 via pipe III; the inlet end of the white material barrel 1 is also connected to the outlet end of the white material switching unit 5 via pipe IV; the inlet end of the black material tank 2 is connected to the outlet end of the black material raw material barrel 4 via pipe IV. Pipeline II is connected to the outlet end of the black material switching unit 6 via pipeline VI; the inlet end of the black material tank 2 is also connected to the outlet end of the black material switching unit 6 via pipeline V; the inlet end of the mixing nozzle 7 is connected to the white material switching unit 5 and the black material switching unit 6 via pipelines VII and VII respectively; the outlet end of the hydraulic station 8 is connected to the outlet end of the mixing nozzle 7 via pipeline IX, and the inlet end is first connected to the outlet end of the mixing nozzle 7 via pipeline X to provide power for opening and closing the mixing nozzle 7; the white material switching unit 5 and the black material switching unit 6 are connected to the power control cabinet 15.

[0058] A valve 9 is installed on pipeline IV to control the flow rate between the white material cylinder 1 and the white material switching unit 5; a filter 10 is installed on pipeline IV to filter the fluid inside the pipe; a white material metering pump 13 is installed on pipeline IV to provide power for the entire white material flow.

[0059] A valve 9 is installed on pipeline V to control the flow rate between the return cylinder 2 and the black material switching unit 6; a filter 10 is installed on pipeline V to filter the fluid in the pipe; and a black material metering pump 14 is installed on pipeline V to provide power for the entire black material flow.

[0060] Each of the white material tank 1 and the black material tank 2 is equipped with a level gauge 11 to measure the liquid level inside the tank.

[0061] Both the white material tank 1 and the black material tank 2 are equipped with a safety valve 12 to prevent excessive pressure inside the tank and to control their own pressure.

[0062] The power control cabinet 15 is connected to the white material metering pump 13 and the black material metering pump 14, and provides 380V AC power.

[0063] Power control cabinet 15 provides 220V power to white material switching unit 5 and black material switching unit 6.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fully automatic polyurethane foaming machine for on-site patching, characterized in that: The on-site patching polyurethane foaming machine includes: a white material tank (1), a black material tank (2), a white material raw material barrel (3), a black material raw material barrel (4), a white material switching unit (5), a black material switching unit (6), a mixing nozzle (7), a hydraulic station (8), and a power control cabinet (15). The inlet end of the white material tank (1) is connected to the outlet end of the white material raw material barrel (3) through pipe I, and the outlet end is connected to the inlet end of the white material switching unit (5) through pipe III. The inlet end of the white material tank (1) is also connected to the outlet end of the white material switching unit (5) through pipeline IV; The inlet end of the black material tank (2) is connected to the outlet end of the black material raw material barrel (4) through pipe II, and the outlet end is connected to the inlet end of the black material switching unit (6) through pipe VI. The inlet end of the black material tank (2) is also connected to the outlet end of the black material switching unit (6) through pipeline V; The inlet end of the mixing nozzle (7) is connected to the white material switching unit (5) and the black material switching unit (6) through pipe VII and pipe VII respectively; The outlet end of the hydraulic station (8) is connected to the outlet end of the mixing gun head (7) through pipeline IX, and the inlet end is first connected to the outlet end of the mixing gun head (7) through pipeline X, so as to provide the power for opening and closing of the mixing gun head (7). The white material switching unit (5) and the black material switching unit (6) are connected to the power control cabinet (15).

2. The fully automatic polyurethane foaming machine for on-site patching according to claim 1, characterized in that: A valve (9) is installed on the pipeline IV to control the flow rate between the white material tank (1) and the white material switching unit (5); The pipeline IV is equipped with a filter (10) to filter the fluid inside the pipeline; A white material metering pump (13) is installed on the pipeline IV to provide power for the entire white material flow; The power control cabinet (15) is connected to the white material metering pump (13) and provides 380V AC power.

3. The fully automatic polyurethane foaming machine for on-site patching according to claim 1, characterized in that: The pipeline V is equipped with a valve (9) to control the flow rate between the black material tank (2) and the black material switching unit (6); The pipeline V is equipped with a filter (10) to filter the fluid inside the pipeline; A black material metering pump (14) is installed on the pipeline V to provide power for the entire black material flow; The power control cabinet (15) is connected to the black material metering pump (14) and provides 380V AC power.

4. The fully automatic polyurethane foaming machine for on-site patching according to claim 1, characterized in that: Each of the white material tank (1) and the black material tank (2) is equipped with a level gauge (11) to measure the liquid level inside the tank.

5. The fully automatic polyurethane foaming machine for on-site patching according to claim 1, characterized in that: Each of the white material tank (1) and the black material tank (2) is equipped with a safety valve (12) to prevent excessive pressure inside the tank and control its own pressure.

6. The fully automatic polyurethane foaming machine for on-site patching according to claim 1, characterized in that: The power control cabinet (15) provides 220V power to the white material switching unit (5) and the black material switching unit (6).

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