CN218741893U - Polyurethane waterproof coating production system - Google Patents
Polyurethane waterproof coating production system Download PDFInfo
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- CN218741893U CN218741893U CN202222852201.7U CN202222852201U CN218741893U CN 218741893 U CN218741893 U CN 218741893U CN 202222852201 U CN202222852201 U CN 202222852201U CN 218741893 U CN218741893 U CN 218741893U
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Abstract
The utility model belongs to the chemical production field discloses a polyurethane waterproof coating production system, include: the reaction kettle is provided with a reaction kettle feeding hole; the metering tank is used for caching ingredients for producing the polyurethane waterproof coating, and is provided with a metering tank discharge port, a first electric control switch valve and a first weighing sensor, wherein the metering tank discharge port is in pipeline connection with the reaction kettle feed port, the first electric control switch valve is arranged at the metering tank discharge port, and the first weighing sensor is used for detecting the weight of the ingredients in the metering tank; and the controller is communicated with the first electric control switch valve and the first weighing sensor respectively, and in the process of feeding the materials to the reaction kettle by the metering tank, the controller is set to control the first electric control switch valve to be closed when the weight change of the ingredients in the metering tank reaches the preset feeding amount. The utility model discloses can control the metering tank automatically and throw the material to reation kettle ration, avoid artifical error operation, guarantee the production process seal, improve the security.
Description
Technical Field
The utility model relates to a chemical production technical field specifically, relates to a polyurethane waterproof coating production system.
Background
The production ingredients of the polyurethane waterproof coating are dangerous materials such as isocyanate (TDI/MDI), and the like, and the polyurethane waterproof coating is prepared in the traditional production process by manually weighing and adding the materials into a reaction kettle. Violent reaction can take place in this preparation process, through artifical material loading be difficult to control the input, guarantee the operation seal, if the operation has the mistake or takes place to leak, cause the incident easily, harm personnel's life health, the manpower inefficiency, the environment is easily polluted simultaneously.
SUMMERY OF THE UTILITY MODEL
To prior art's above-mentioned defect or not enough, the utility model provides a polyurethane water proof coating production system can automize and accomplish the material loading operation, according to the accurate control batching input volume of production needs to effectively prevent the occurence of failure, use manpower sparingly, guarantee the seal of production, avoid the polluted environment.
In order to achieve the above object, the utility model provides a polyurethane waterproof coating production system, polyurethane waterproof coating production system includes:
the reaction kettle is provided with a reaction kettle feeding hole;
the measuring tank is used for caching ingredients for producing the polyurethane waterproof coating, and is provided with a measuring tank discharge port, a first electric control switch valve and a first weighing sensor, wherein the measuring tank discharge port is in pipeline connection with the reaction kettle feed port, the first electric control switch valve is arranged at the measuring tank discharge port, and the first weighing sensor is used for detecting the weight of the ingredients in the measuring tank; and
and the controller is respectively communicated with the first electric control switch valve and the first weighing sensor, and is set to control the first electric control switch valve to be closed when the weight change of ingredients in the metering tank reaches a preset feeding amount in the process of feeding the ingredients to the reaction kettle by the metering tank.
Optionally, the metering tank further comprises a flow control valve disposed at the outlet of the metering tank, and the controller is in communication with the flow control valve and is configured to adjust the opening of the flow control valve.
Optionally, the metering tank still includes the flowmeter that is used for detecting batching flow between the metering tank discharge gate with the reation kettle feed inlet, the controller with the flowmeter communication sets up to be able to adjust when the batching flow exceedes predetermines the flow range the aperture of flow control valve is in order to maintain the batching flow is in predetermine the flow range.
Optionally, the reaction kettle is provided with a second weighing sensor for detecting the weight of the materials in the kettle, the controller is in communication with the second weighing sensor, and the controller is configured to control the first electrically-controlled switch valve to be closed when the weight change of the weight of the materials in the kettle reaches the preset feeding amount in the process of feeding the materials to the reaction kettle from the metering tank.
Optionally, the reaction kettle is provided with a temperature sensor for detecting the temperature in the kettle and communicating with the controller, and the controller is configured to control the first electrically-controlled switch valve to be closed when the temperature in the kettle is higher than a preset maximum temperature in the process of feeding the material to the reaction kettle from the metering tank.
Optionally, the reaction kettle is provided with a normally closed pressure relief structure capable of being opened when the fluid pressure in the kettle is higher than a preset maximum pressure, and the polyurethane waterproof coating production system further comprises a collection tank connected with the normally closed pressure relief structure through a pipeline.
Optionally, the normally closed pressure relief structure includes a rupture disc capable of rupturing when the pressure in the tank is higher than the preset maximum pressure.
Optionally, the polyurethane waterproof coating production system further comprises a nitrogen gas supply device, and a gas outlet of the nitrogen gas supply device is respectively in pipeline connection with the reaction kettle and the metering tank.
Optionally, the metering tank is further provided with a metering tank feeding port and a second electric control switch valve arranged at the metering tank feeding port, the polyurethane waterproof coating production system further comprises a power pump and a batching storage container in pipeline connection with the metering tank feeding port, and the controller is respectively communicated with the second electric control switch valve and the power pump;
the power pump drive in the container is deposited to the batching to the in-process that the metering tank carried, the controller sets up to can in the metering tank the weight of batching is not less than when presetting maximum weight control the second automatically controlled ooff valve is closed and is controlled the power pump stop work.
Optionally, the polyurethane waterproof paint production system further comprises an adsorption device for adsorbing the leaked ingredients.
Through the technical scheme, when utilizing the utility model discloses during production polyurethane water proof coating, control the metering tank by the controller accurately and throw the material to reation kettle ration. In the feeding process, a first weighing sensor of the metering tank can detect the weight of the ingredients in the tank in real time and send corresponding detection data to the controller, the controller can determine the weight change (the variable quantity is the real-time feeding amount) of the ingredients in the tank according to the detection data continuously received from the first weighing sensor, and when the real-time feeding amount reaches the preset feeding amount, the controller controls the first electric control switch valve of the metering tank to be closed, so that the discharge port of the metering tank is closed. So, alright realize automatic ration and throw the material, avoid manual operation mistake and cause the incident, improve the security, and the metering tank passes through the tube coupling with reation kettle, can effectively avoid easily firing or poisonous batching leaks, guarantees the seal, prevents that polluted environment and harm personnel are healthy.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic diagram of a production system of polyurethane waterproof paint according to an embodiment of the present invention.
Description of reference numerals:
1. reation kettle 2 metering tank
3. Nitrogen gas supply device 4 power pump
5. 6 adsorption equipment of container are deposited to batching
11. Second weighing sensor at feeding port 12 of reaction kettle
13. Temperature sensor 14 normal close formula pressure relief structure
15. Collecting tank 21 metering tank discharge port
22. First electric control switch valve 23 first weighing sensor
24. Flow control valve 25 flow meter
26. Second electric control switch valve of feeding port 27 of metering tank
14a rupture disk
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the embodiments of the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.
The invention will be described in detail below with reference to the accompanying drawings in conjunction with exemplary embodiments.
As shown in fig. 1, the exemplary embodiment of the utility model provides a polyurethane waterproofing paint production system, it includes reation kettle 1, metering tank 2 and controller (the attached drawing is not shown), throws material to reation kettle 2 ration through controller accurate control metering tank 1, can realize automatic material, the control reaction process of throwing, ensures the production seal.
Specifically, the reaction kettle 1 is provided with a reaction kettle feed inlet 11.
The metering tank 2 is provided with a metering tank discharge port 21, a first electrically controlled on-off valve 22 and a first weighing sensor 23. Metering tank 2 is used for buffer memory to produce the batching (for example poisonous and the active isocyanate of chemical property) that polyurethane waterproofing paint used, and metering tank discharge gate 21 forms the pipe connection with reation kettle feed inlet 11. First automatically controlled ooff valve 22 sets up in metering tank discharge gate 21 department, can adopt electronic ooff valve or pneumatic ooff valve, and when first automatically controlled ooff valve 22 opened, the batching in the metering tank 2 can be followed metering tank discharge gate 21 and exported, inputs reation kettle 1 through the pipeline. The first load cell 23 is used to detect the weight of the ingredient in the metering tank 2.
The controller can be respectively communicated with the first electric control switch valve 22 and the first weighing sensor 23, and in the process of feeding the material into the reaction kettle 1 from the metering tank 2, the controller is set to control the first electric control switch valve 22 to be closed when the weight change of the ingredients in the metering tank 2 reaches the preset feeding amount. The preset material amount is data written into the controller in advance, and can be determined according to an actual formula.
Through the arrangement, when the polyurethane waterproof coating production system of the exemplary embodiment is used, sufficient ingredients can be added into the metering tank 2 for caching, the controller sends an instruction to the first electronic control switch valve 22, the first electronic control switch valve 22 is switched from the closed state to the open state, the cached ingredients are output from the metering tank discharge port 21, flow through the pipeline and enter the reaction kettle 1 from the reaction kettle feed port 11, and the ingredients start to react in the reaction kettle 1.
In-process of throwing material at metering tank 2 to reation kettle 1, but the weight of batching in first weighing sensor 23 real-time detection metering tank 2 and send this weight information to the controller, the weight change (the change volume is real-time input material) of batching in the controller can be confirmed according to the weight information who lasts received from first weighing sensor 23, when real-time input material reaches preset input material, the controller is to first automatically controlled ooff valve 22 give-out order, control first automatically controlled ooff valve 22 and close, thereby close the metering tank discharge gate, metering tank 2 stops promptly and throws the material to reation kettle 1, thereby realize automatic quantitative feeding, avoid artifical error operation to arouse interior reaction of cauldron violent phenomenon, effectively reduce the risk of incident appearing.
In one embodiment, metering tank 2 further includes a flow control valve 24 disposed at metering tank outlet 21, and the controller is in communication with flow control valve 24 and is configured to regulate the opening of flow control valve 24. In the process of feeding materials to the reaction kettle 1 by the metering tank 2, the flow control valve 24 can receive an instruction of the controller to set corresponding opening degrees, so that the flow of the ingredients in the pipeline is controlled, the feeding speed is controlled, the severe reaction of over-temperature and over-pressure caused by the over-high feeding speed is avoided, the danger is effectively avoided, and the production safety is ensured. For example, the controller may be triggered by a manual command to adjust the opening of the flow control valve 24. Of course, this exemplary embodiment is not limited to the scheme of manual operation, can also send out the regulation instruction through other equipment and controller communication, promotes degree of automation, and the time of accurate regulation flow is controlled, saves the human cost.
In one embodiment, metering tank 2 further comprises a flow meter 25 for detecting the flow of the batch material between metering tank outlet 21 and reactor inlet 11, and the controller is in communication with flow meter 25 and is configured to adjust the opening of flow control valve 24 to maintain the batch material flow within a preset flow range when the batch material flow is outside the preset flow range. The preset flow range is data written into the controller in advance and can be adjusted according to actual production requirements. The flow meter 25 may be a vortex shedding flow meter or an electromagnetic flow meter.
Specifically, in order to make the reaction process for preparing the polyurethane waterproof coating safer and more desirable, the feeding process can be set within a certain flow range according to the actual formula. The preset flow range can be written in the controller in advance, in the feeding process, the flowmeter 25 can detect the batching flow in real time and send corresponding flow information to the controller, and when the controller judges that the current batching flow is not in the preset flow range, an instruction is sent to the flow control valve 24 to adjust the opening of the valve until the batching flow is readjusted to be in the preset flow range.
It can be seen that through the cooperation of the flow meter 25, the flow control valve 24, the first weighing sensor 23 and the controller, the polyurethane waterproof coating production system can automatically and accurately feed materials in a quantitative manner, can also automatically and accurately regulate and control the feeding speed, and is equivalent to realizing double metering and feeding. In the aspect of production safety, the double protection effect is equivalently played, and safety accidents caused by over-reaction in the kettle can be effectively prevented.
In one embodiment, the reaction kettle 1 is provided with a second weighing sensor 12 for detecting the weight of the materials in the kettle, the controller is communicated with the second weighing sensor 12, and in the process of feeding the materials into the reaction kettle 1 from the metering tank 2, the controller is set to control the first electrically-controlled switch valve 22 to be closed when the weight change of the weight of the materials in the kettle reaches a preset feeding amount.
Specifically, the second weighing sensor 12 can detect the weight of the material in the reaction kettle 1 in real time during the feeding process and send corresponding weight information to the controller, the controller can determine the weight change of the material in the reaction kettle 1 according to the weight information continuously received from the second weighing sensor 12, and when the weight change reaches a preset feeding amount, the controller controls the first electrically controlled switch valve 22 to be closed, so that the feeding is stopped. If the scheme of this embodiment combines above-mentioned dual measurement scheme to use, can further realize that triple measurement throws the material, through triple interlocking, make production process can put in the batching according to actual formulation very accurately, greatly improve the security.
In one embodiment, the reaction kettle 1 is provided with a temperature sensor 13 for detecting the temperature in the kettle and communicating with the controller, and in the process of feeding the material into the reaction kettle 1 from the metering tank 2, the controller is set to control the first electrically-controlled switch valve 22 to be closed when the temperature in the kettle is higher than a preset maximum temperature.
In the production process of the polyurethane waterproof coating, the reaction temperature in the reaction kettle 1 needs to be carried out within a certain temperature range so as to avoid safety accidents caused by over-reaction, and the present exemplary embodiment can be used as a temperature monitoring mechanism of the reaction. Specifically, the temperature early warning value in the reactor can be set through the controller before feeding (namely, the data information of the preset highest temperature is written in the controller in advance), the temperature sensor 13 can detect the temperature in the reaction kettle 1 in real time after the operation of the production system and send the temperature information to the controller, when the real-time temperature in the reaction kettle 1 is higher than the preset highest temperature, the controller sends an instruction to the first electric control switch valve 22, the first electric control switch valve 22 closes the valve after receiving the instruction, the metering tank 2 stops feeding ingredients into the reaction kettle 1, the temperature in the reaction kettle 1 is prevented from continuously rising, and the accidental occurrence of overpressure caused by the condensation of the reaction is avoided. Under the protection of the temperature monitoring mechanism of this embodiment, supposing that flowmeter 25 became invalid and can't control batching flow and cause reaction temperature when too high, through temperature sensor 13's feedback, can in time stop the batching and put in, realize throwing the multiple management and control of material process, guarantee production safety.
In one embodiment, reactor 1 is provided with a normally closed pressure relief structure 14 capable of opening when the pressure in the tank is above a predetermined maximum pressure. On the premise of ensuring safe and efficient production, the preset maximum pressure can be determined according to the actual production condition and the production experience. Polyurethane waterproof coating production system still includes the collection tank 15 that forms the tube coupling with closed formula pressure release structure 14, and this collection tank 15 possesses the leakproofness, and can collect the material from reation kettle 1 leakage, avoids the material to leak to external environment in.
Specifically, the normally closed pressure relief structure 14 may be disposed at a lateral position of the top of the reaction kettle 1, and may bear a maximum fluid pressure in the kettle that is less than or equal to a preset maximum pressure. In the production process, when fluid pressure was higher than the cauldron that normally closed type pressure relief structure 14 can bear in the cauldron maximum fluid pressure (predetermine the highest pressure promptly), normally closed type pressure relief structure 14 was converted into the open mode by normally closed state, material accessible normally closed type pressure relief structure 14 in reation kettle 1 discharges, get into collection tank 15 via the pipeline, thereby reduce the pressure in reation kettle 1, resume to the safe state, collection tank 15 can seal the buffer memory from reation kettle 1 leaked material, avoid its leakage to external environment in. Therefore, if the temperature sensor 13 fails and the reaction process is out of control, the scheme of the embodiment can effectively treat production accidents, realize multiple protection on the production process and ensure the production safety.
In one embodiment, the normally closed pressure relief structure 14 includes a rupture disk 14a capable of rupturing when the pressure within the tank is above a predetermined maximum pressure. The rupture disk 14a is arranged in the normally-closed pressure relief structure 14, so that the reaction kettle 1 is hermetically isolated from the collecting tank 15, the maximum fluid pressure in the kettle which can be borne by the rupture disk 14a is less than or equal to the preset highest pressure, when the pressure in the reaction kettle 1 is higher than the preset highest pressure, the rupture disk 14a can be broken under the action of the fluid pressure, so that a discharge hole is formed in the normally-closed pressure relief structure 14, and at the moment, high-pressure materials are discharged out of the reaction kettle 1 and enter the collecting tank 15, so that accidents caused by the leakage of the materials are avoided. After pressure relief, the rupture disk 14a can enter the collection tank 15 or fall into the reaction kettle 1 along with the high-pressure material. Of course, other pressure relief structures such as a gravity valve or a fusible piece may be used instead of the rupture disk 14a, and the present exemplary embodiment is not limited to the specific structural form of the normally-closed pressure relief structure 14.
In one embodiment, the polyurethane waterproof coating production system further comprises a nitrogen supply device 3, and a gas outlet of the nitrogen supply device 3 is respectively in pipeline connection with the reaction kettle 1 and the metering tank 2.
Specifically, reaction kettle 1 and metering tank 2 may be provided with a nitrogen gas inlet respectively, and the gas outlet of nitrogen gas supply device 3 is connected with the nitrogen gas inlets of reaction kettle 1 and metering tank 2 respectively through pipelines. Before production begins, nitrogen is firstly conveyed to the metering tank 2 and the reaction kettle 1 through the nitrogen supply device 3, air and other gases in the metering tank 2, the reaction kettle 1 and pipelines thereof are purged by using the nitrogen, and purging is continuously carried out until no other gases except the nitrogen remain in equipment of a production line, so that air isolation in the processes of feeding and reaction is ensured. After production, can repeat above-mentioned nitrogen gas and sweep the operation, discharge the environmental protection processing process outside this production system to the residual gas in metering tank 2 and reation kettle 1 and its pipeline, prevent that residual gas from leaking, the protection personal safety. Particularly, when production is carried out, nitrogen can be conveyed to the arrangement area of the production system according to actual conditions, so that the whole production system is filled with nitrogen, a better air isolation effect is achieved, and the production safety is improved.
In one embodiment, metering tank 2 further comprises a metering tank inlet 26 and a second electrically controlled on-off valve 27, wherein the second electrically controlled on-off valve 27 is disposed at the metering tank inlet 26, and when the second electrically controlled on-off valve 27 is opened, the ingredient can first pass through the second electrically controlled on-off valve 27 and then enter the metering tank 2 through the metering tank inlet 26. Polyurethane waterproofing paint production system still includes power pump 4 and batching and deposits container 5, and batching is deposited container 5 and is formed the tube coupling with metering tank feed inlet 26, and power pump 4 can be the diaphragm pump, and it can provide power for the material loading of production batching to make the batching in batching storage container 5 can be carried to metering tank 2 in via the pipeline. The controller is respectively communicated with the second electric control switch valve 27 and the power pump 4; in the process that the power pump 4 drives the ingredients in the ingredients storage container 5 to convey to the metering tank 2, the controller is set to control the second electrically-controlled switch valve 27 to be closed and control the power pump 4 to stop working when the weight of the ingredients in the metering tank 2 is not less than the preset maximum weight.
In particular, the ingredient storage container 5 may be arranged in a closed space, and the power pump 4 may be in line connection with the ingredient storage container 5 via a quick coupling, which may form a branch line and which is connected with the nitrogen gas supply device 3. Before the ingredients are conveyed to the metering tank 2, the preset maximum weight can be written into the controller in advance, in the process that the power pump 4 drives the ingredients in the ingredient storage container 5 to convey the ingredients to the metering tank 2, the first weighing sensor 23 can detect the weight of the ingredients in the metering tank 2 in real time, weight information is fed back to the controller immediately, the controller analyzes and compares the real-time weight value with the preset maximum weight, when the real-time weight value reaches the preset weight value, the controller can immediately send an instruction to the second electric control switch valve 27 and control the power pump 4, the second electric control switch valve 27 closes the valve immediately, and meanwhile, the power pump 4 is controlled to stop conveying the ingredients. Through the scheme of this embodiment, can realize automatic accurate prepareeing material, this process can isolated air, prevents that the batching from leaking, protects personal safety.
In one embodiment, the polyurethane waterproofing paint production system further includes an adsorption device 6 for adsorbing the leaked ingredients. Specifically, the adsorption device 6 may be disposed in the closed space where the ingredient storage container 5 is disposed, for example, the adsorption device 6 may be an environment-friendly air suction hood disposed at a corner position of the closed space, and can adsorb the ingredients leaked in the closed space on a large scale.
The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that, in the above-mentioned embodiments, the various technical features described in the above-mentioned embodiments can be combined in any suitable way without contradiction, and in order to avoid unnecessary repetition, the embodiments of the present invention do not separately describe various possible combinations.
In addition, various different implementation manners of the embodiments of the present invention can be combined arbitrarily, and as long as it does not violate the idea of the embodiments of the present invention, it should be considered as the disclosure of the embodiments of the present invention.
Claims (10)
1. A polyurethane waterproofing paint production system, characterized in that the polyurethane waterproofing paint production system comprises:
the reaction kettle (1) is provided with a reaction kettle feeding hole (11);
the measuring tank (2) is used for caching ingredients for producing the polyurethane waterproof coating, and the measuring tank (2) is provided with a measuring tank discharge port (21) which is in pipeline connection with the reaction kettle feed port (11), a first electric control switch valve (22) arranged at the measuring tank discharge port (21) and a first weighing sensor (23) used for detecting the weight of the ingredients in the measuring tank (2); and
and the controller is respectively communicated with the first electric control switch valve (22) and the first weighing sensor (23), and is arranged to control the first electric control switch valve (22) to be closed when the weight change of ingredients in the metering tank (2) reaches a preset feeding amount in the process that the metering tank (2) feeds the ingredients into the reaction kettle (1).
2. The polyurethane waterproofing coating production system according to claim 1, wherein the metering tank (2) further comprises a flow control valve (24) provided at the metering tank discharge port (21), and the controller is in communication with the flow control valve (24) and is provided so as to be able to adjust the opening degree of the flow control valve (24).
3. The polyurethane waterproofing coating production system according to claim 2, wherein the metering tank (2) further comprises a flow meter (25) for detecting a batching flow between the metering tank discharge port (21) and the reaction vessel feed port (11), the controller being in communication with the flow meter (25) and being configured to adjust an opening of the flow control valve (24) to maintain the batching flow within a preset flow range when the batching flow exceeds the preset flow range.
4. The polyurethane waterproof paint production system according to claim 1, wherein the reaction kettle (1) is provided with a second weighing sensor (12) for detecting the weight of materials in the kettle, the controller is in communication with the second weighing sensor (12), and the controller is configured to control the first electrically-controlled switch valve (22) to be closed when the weight change of the weight of the materials in the kettle reaches the preset feeding amount in the process of feeding the metering tank (2) to the reaction kettle (1).
5. The polyurethane waterproof coating production system according to claim 1, wherein the reaction kettle (1) is provided with a temperature sensor (13) for detecting the temperature in the kettle and communicating with the controller, and the controller is configured to control the first electrically-controlled switch valve (22) to be closed when the temperature in the kettle is higher than a preset maximum temperature during the feeding process of the metering tank (2) to the reaction kettle (1).
6. The polyurethane waterproof coating production system according to claim 1, wherein the reaction kettle (1) is provided with a normally closed pressure relief structure (14) capable of opening when the pressure in the kettle is higher than a preset maximum pressure, and the polyurethane waterproof coating production system further comprises a collection tank (15) in pipeline connection with the normally closed pressure relief structure (14).
7. Polyurethane waterproofing coating production system according to claim 6, wherein the normally closed pressure relief structure (14) comprises a rupture disc (14 a) capable of rupturing when the fluid pressure in the kettle is higher than the preset maximum pressure.
8. The polyurethane waterproof coating production system according to claim 1, further comprising a nitrogen gas supply device (3), wherein a gas outlet of the nitrogen gas supply device (3) is in pipeline connection with the reaction kettle (1) and the metering tank (2), respectively.
9. The polyurethane waterproof coating production system according to claim 1, wherein the metering tank (2) is further provided with a metering tank inlet (26) and a second electrically-controlled switch valve (27) arranged at the metering tank inlet (26), the polyurethane waterproof coating production system further comprises a power pump (4) and a batching storage container (5) in pipeline connection with the metering tank inlet (26), and the controller is respectively communicated with the second electrically-controlled switch valve (27) and the power pump (4);
the power pump (4) drive in the container (5) is deposited to the batching to the in-process that metering tank (2) carried, the controller sets up to can be in metering tank (2) the weight of batching is not less than when presetting maximum weight control second automatically controlled ooff valve (27) are closed and are controlled power pump (4) stop work.
10. Polyurethane waterproofing paint production system according to claim 9, wherein said polyurethane waterproofing paint production system further comprises an adsorption device (6) for adsorbing the leaked ingredients.
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CN202222852201.7U CN218741893U (en) | 2022-10-27 | 2022-10-27 | Polyurethane waterproof coating production system |
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CN202222852201.7U CN218741893U (en) | 2022-10-27 | 2022-10-27 | Polyurethane waterproof coating production system |
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