Reactor for producing urea-formaldehyde pre-shrinkage liquid and control method thereof

Abstract

The present application relates to the field of chemical technology, and discloses a reactor for producing urea-formaldehyde pre-shrinkage liquid, including: a device body, a urea solution discharge structure, a formaldehyde release structure, an alkali solution delivery structure, a detection component and a controller component. The controller component is connected to the detection component, the alkali solution delivery structure, the formaldehyde release structure and the urea solution discharge structure. In the present application, there is no need for complicated operations, so that the process of the mixing reaction is simplified, and the time of the mixing reaction can be shortened. When the rotating nozzle sprays the alkali solution into the reaction container, the airflow will also disturb the flow of urea and formaldehyde, which is also helpful to make the two quickly and evenly mixed, ensuring the effect of the mixing reaction while improving the reaction efficiency. The present application also discloses a control method for a reactor for producing urea-formaldehyde pre-shrinkage liquid.

Description

Technical Field

[0001] The present application relates to the field of chemical technology, for example, to a reactor for producing urea-formaldehyde pre-shrinkage liquid and a control method thereof. Background Art

[0002] Urea-formaldehyde pre-shrinkage liquid is the main raw material for the production of urea-formaldehyde glue. It is an environmentally friendly chemical product, especially widely used in the process of making glue for artificial boards. The preparation of urea-formaldehyde pre-shrinkage liquid has effectively solved the problem of formaldehyde storage and transportation in cold winter.

[0003] At present, there have been many reports on the preparation of urea-formaldehyde pre-shrinkage liquid. The preparation method thereof is generally to absorb a mixed gas containing formaldehyde and a solution containing urea. However, in the existing preparation device, the method of adding raw materials is relatively simple, and after the formaldehyde and urea are added, continuous stirring is required. The production process is relatively complicated, resulting in a long time consumption in the preparation of urea-formaldehyde pre-shrinkage liquid, which reduces the reaction efficiency.

[0004] Therefore, how to simplify the preparation process, shorten the reaction time, and improve the reaction efficiency has become a technical problem that needs to be solved urgently by those skilled in the art.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0007] The disclosed embodiments provide a reactor for producing urea-formaldehyde pre-shrinkage liquid and a control method thereof, which do not require complicated operations, simplify the mixing reaction process, and can shorten the mixing reaction time. When the rotating nozzle sprays alkaline solution into the reaction container, the airflow will also disturb the flow of urea and formaldehyde, which also helps to quickly and evenly mix the two, thereby ensuring the mixing reaction effect while improving the reaction efficiency.

[0008] In some embodiments, a reactor for producing urea-formaldehyde pre-shrinkage liquid includes: a device body, a urea solution discharge structure, a formaldehyde release structure, an alkali solution delivery structure, a detection component and a controller component. The device body is provided with a heater, a reaction container is provided therein, and a conical vibration plate is provided at the bottom of the reaction container, a drain port and an electric control valve for controlling the opening or closing of the drain port are provided at the bottom of the vibration plate, wherein the heater is used to controllably heat the interior of the reaction container; the urea solution discharge structure comprises a urea solution discharge cylinder and a driver, the urea solution discharge cylinder is a hollow cylindrical structure, which is provided in the reaction container, and the top is rotatably connected to the top wall of the device body, a plurality of electric atomizing nozzles are evenly provided on the side of the urea solution discharge cylinder, the driver is provided at the top of the device body, and is connected to the top of the urea solution discharge cylinder, and is used to drive the urea solution discharge cylinder to rotate; the formaldehyde release structure comprises an air storage box and a release pipe, the air storage box is provided at the top of the device body, the release pipe is provided in the reaction container, and one end of the release pipe is connected to the air storage box, wherein a plurality of release holes are evenly provided on the side of the release pipe, and each of the release holes has a plurality of release holes. An electrically controlled switch valve is arranged corresponding to the release hole; the alkali solution delivery structure comprises a liquid storage tank, a delivery pipe and a rotating nozzle, the liquid storage tank is arranged on the device body, one end of the delivery pipe is connected to the liquid storage tank, and the other end is penetrated into the reaction container, and the rotating nozzle is arranged on the portion of the delivery pipe located in the reaction container; the detection component is used to detect the reaction environment information in the reaction container, and obtain the discharge form information of the urea solution discharge structure discharging urea solution into the reaction container; the controller component is connected with the detection component, the alkali solution delivery structure, the formaldehyde release structure and the urea solution discharge structure, and is used to control the alkali solution delivery structure to deliver alkali solution into the reaction container according to the reaction environment information in the reaction container and when the reaction environment does not meet the standard, adjust the reaction environment in the reaction container, and control the formaldehyde release structure to release formaldehyde into the reaction container in a corresponding form according to the discharge form information of the urea solution discharge structure discharging urea solution into the reaction container.

[0009] In some embodiments, a control method for a reactor for producing urea-formaldehyde pre-shrinkage liquid is used to control a reactor for producing urea-formaldehyde pre-shrinkage liquid as described in any one of the above items, comprising:

[0010] Acquiring reaction environment information in the reaction container;

[0011] When the reaction environment does not meet the standard, the alkali solution delivery structure is controlled to deliver alkali solution into the reaction container to adjust the reaction environment in the reaction container;

[0012] Acquiring discharge form information of the urea solution discharge structure into the reaction container;

[0013] According to the discharge form of the urea solution discharged into the reaction container by the urea solution discharge structure, the formaldehyde release structure is controlled to release formaldehyde into the reaction container in a corresponding form.

[0014] The reactor for producing urea-formaldehyde pre-shrinkage liquid and the control method thereof provided in the embodiments of the present disclosure can achieve the following technical effects:

[0015] When producing urea-formaldehyde pre-shrinkage liquid, the reaction environment in the reaction container can be adjusted by controlling the rotating nozzle to add alkali solution into the reaction container. The alkaline environment is more conducive to a better reaction between formaldehyde and urea solution, providing a better reaction environment for the production of urea-formaldehyde pre-shrinkage liquid to ensure the production quality of urea-formaldehyde pre-shrinkage liquid. The urea solution can be atomized by an electric atomizing nozzle and sprayed into the reaction container. At the same time, formaldehyde is released into the reaction container through a release tube, so that the two are discharged into the reaction container in a corresponding form and can contact and mix evenly at the first time. No complicated operation is required, which simplifies the mixing reaction process and can shorten the mixing reaction time. When the rotating nozzle sprays alkali solution into the reaction container, the airflow will also disturb the flow of urea and formaldehyde, which is also conducive to the rapid and even mixing of the two, ensuring the mixing reaction effect while improving the reaction efficiency.

[0016] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0018] Figure 1 It is a schematic structural diagram of a reactor for producing urea-formaldehyde pre-shrinkage liquid provided in an embodiment of the present disclosure;

[0019] Figure 2 is a schematic diagram of the structure of the device body provided by an embodiment of the present disclosure;

[0020] Figure 3 is a schematic structural diagram of another reactor for producing urea-formaldehyde pre-shrinkage liquid provided in an embodiment of the present disclosure;

[0021] Figure 4 is a structural schematic diagram of a urea solution discharge cylinder provided by an embodiment of the present disclosure;

[0022] Figure 5 is a schematic structural diagram of another urea solution discharge cylinder provided by an embodiment of the present disclosure;

[0023] Figure 6 is a schematic diagram of the structure inside the device body provided by an embodiment of the present disclosure;

[0024] Figure 7 is a schematic structural diagram of an alkali solution delivery structure provided in an embodiment of the present disclosure;

[0025] Figure 8 is a schematic diagram of a control method for a reactor for producing urea-formaldehyde pre-shrinkage liquid provided in an embodiment of the present disclosure;

[0026] Fig. 9 It is a schematic structural diagram of another reactor for producing urea-formaldehyde pre-shrinkage liquid provided in an embodiment of the present disclosure.

[0027] Reference numerals:

[0028] 100. Device body; 101. Heater; 102. Reaction container; 103. Vibrating plate; 104. Liquid collecting tank; 105. Three-way solenoid valve; 106. Sampling detection tube; 107. Stirring rod; 108. Cooler; 109. Exhaust gas discharge pipe; 200. Urea solution discharge structure; 201. Urea solution discharge cylinder; 202. Driver; 203. Electric atomizing nozzle; 204. Adjusting plate; 205. Electric telescopic rod; 206. Stirring rod; 300. Formaldehyde release structure; 301. Gas storage box; 302. Release pipe; 303. Release hole; 400. Alkali solution delivery structure; 401. Liquid storage box; 402. Delivery pipe; 403. Rotating nozzle; 404. Liquid spray head; 500. Detection component; 600. Controller component; 700. Processor; 701. Memory; 702. Communication interface; 703. Bus. DETAILED DESCRIPTION

[0029] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0030] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0032] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0033] Unless otherwise stated, the term "plurality" means two or more.

[0034] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0035] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0037] Combination Figure 1-3As shown, the embodiment of the present disclosure provides a reactor for producing urea-formaldehyde pre-shrinkage liquid, including: a device body 100, a urea solution discharge structure 200, a formaldehyde release structure 300, an alkali solution delivery structure 400, a detection component 500 and a controller component 600. The device body 100 is provided with a heater 101, a reaction container 102 is provided therein, and a conical vibration plate 103 is provided at the bottom of the reaction container 102, a liquid discharge port and an electric control valve for controlling the opening or closing of the liquid discharge port are provided at the bottom of the vibration plate 103, wherein the heater 101 is used for controlled heating of the interior of the reaction container 102; the urea solution discharge structure 200 includes a urea solution discharge cylinder 201 and a driver 202, the urea solution discharge cylinder 201 is a hollow cylindrical structure, which is provided in the reaction container 102, and the top is rotatably connected to the top wall of the device body 100. The side of the urea solution discharge cylinder 201 is evenly provided with a plurality of electric atomizing nozzles 203, the driver 202 is arranged at the top of the device body 100, and is connected to the top of the urea solution discharge cylinder 201, and is used to drive the urea solution discharge cylinder 201 to rotate; the formaldehyde release structure 300 includes an air storage box 301 and a release pipe 302, the air storage box 301 is arranged at the top of the device body 100, the release pipe 302 is arranged in the reaction container 102, and one end thereof is connected to the air storage box 301, wherein the side of the release pipe 302 is evenly provided with a plurality of release holes 303, and each An electric control switch valve is provided corresponding to the release hole 303; the alkali solution delivery structure 400 includes a liquid storage tank 401, a delivery pipe 402 and a rotating nozzle 403, the liquid storage tank 401 is provided on the device body 100, one end of the delivery pipe 402 is connected to the liquid storage tank 401, and the other end is inserted into the reaction container 102, and the rotating nozzle 403 is provided on the portion of the delivery pipe 402 located in the reaction container 102; the detection component 500 is used to detect the reaction environment information in the reaction container 102, and obtain the discharge form information of the urea solution discharge structure 200 discharging the urea solution into the reaction container 102 The controller component 600 is connected to the detection component 500, the alkali solution delivery structure 400, the formaldehyde release structure 300 and the urea solution discharge structure 200, and is used to control the alkali solution delivery structure 400 to deliver alkali solution into the reaction container 102 and adjust the reaction environment in the reaction container 102 according to the reaction environment information in the reaction container 102 and when the reaction environment does not meet the standards, and to control the formaldehyde release structure 300 to release formaldehyde into the reaction container 102 in a corresponding form according to the discharge form information of the urea solution discharge structure 200 into the reaction container 102.

[0038] The reactor for producing urea-formaldehyde pre-shrinkage liquid provided by the embodiment of the present disclosure is used. When producing urea-formaldehyde pre-shrinkage liquid, the rotating nozzle 403 is controlled to add alkali solution into the reaction container 102, so as to adjust the reaction environment in the reaction container 102. The alkaline environment is more conducive to a better reaction between formaldehyde and urea solution, and a better reaction environment is provided for producing urea-formaldehyde pre-shrinkage liquid, so as to ensure the production quality of urea-formaldehyde pre-shrinkage liquid. The urea solution can be atomized by the electric atomizing nozzle 203 and sprayed into the reaction container 102. At the same time, formaldehyde is released into the reaction container 102 through the release tube 302, so that the two are discharged into the reaction container 102 in a corresponding form and can contact and mix evenly at the first time. No complicated operation is required, so that the mixing reaction process is simplified and the mixing reaction time can be shortened. When the rotating nozzle 403 sprays the alkali solution into the reaction container 102, the airflow will also disturb the flow of urea and formaldehyde, which is also conducive to the rapid and even mixing of the two, so as to ensure the mixing reaction effect and improve the reaction efficiency.

[0039] Optionally, the vibration plate 103 is connected to the bottom of the reaction vessel 102 through an elastic threaded tube. In this way, the vibration plate 103 can vibrate better at the bottom of the reaction vessel 102 to ensure the stability of the vibration, and the vibration plate 103 can make the reaction between formaldehyde and urea solution more thorough and comprehensive, and ensure the production quality of urea-formaldehyde pre-shrinkage liquid.

[0040] Optionally, a cooler 108 is connected to the bottom of the reaction container 102. In this way, the produced urea-formaldehyde pre-shrinkage liquid can be cooled, which is helpful for collection, transportation and storage.

[0041] Optionally, the device body 100 is provided with an exhaust gas discharge pipe 109 which is in communication with the reaction container 102. In this way, the exhaust gas is discharged by using the exhaust gas discharge pipe 109.

[0042] like Figure 4-5 As shown, optionally, the urea solution discharge structure 200 further includes: an adjustment plate 204 and an electric telescopic rod 205. The adjustment plate 204 can be adaptively arranged in the urea solution discharge cylinder 201; the electric telescopic rod 205 is arranged at the bottom of the urea solution discharge cylinder 201, and its top is connected to the adjustment plate 204, and is used to drive the adjustment plate 204 to move up and down along the height direction of the urea solution discharge cylinder 201, so as to adjust the target area of ​​the urea solution discharge cylinder 201 to discharge the urea solution. In this way, by driving the adjustment plate 204 to move up and down along the height direction of the urea solution discharge cylinder 201, the space size of the urea solution discharge cylinder 201 and the feeding position of the urea solution can be adjusted, so that the urea solution can be better controlled to discharge urea from a predetermined position into the reaction container 102, and the form of urea discharge is easy to control, and the discharge of urea solution can be better regulated according to the reaction and use requirements.

[0043] Optionally, the regulating plate 204 is adapted to the cross section of the urea solution discharge cylinder 201, and a sealing ring is provided between the regulating plate 204 and the side wall of the urea solution discharge cylinder 201. In this way, the sealing is ensured and the waste of urea solution is avoided.

[0044] Optionally, a stirring rod 206 is provided at the bottom of the urea solution discharge cylinder 201, and the stirring rod 206 corresponds to the conical area at the bottom of the reaction container 102, wherein the stirring rod 206 is tilted away from the axis of the urea solution discharge cylinder 201. In this way, the urea and formaldehyde to be mixed can be stirred to make the two thoroughly mixed and reacted, and the vibration of the bottom vibration plate 103 is coordinated to ensure the thoroughness and effect of the mixing.

[0045] Optionally, there are multiple stirring rods 206, which are evenly arranged at the bottom of the urea solution discharge cylinder 201 and staggered with the electric atomizing nozzles 203 at the bottom area of ​​the urea solution discharge cylinder 201. In this way, the influence of the stirring rod 107 on urea discharge is reduced.

[0046] Optionally, the detection component 500 is also used to detect the usage of the urea solution. The electric telescopic rod 205 and the detection component 500 are both connected to the controller component 600. The controller component 600 is used to control the electric telescopic rod 205 to drive the adjustment plate 204 to move up and down along the height direction of the urea solution discharge cylinder 201 according to the usage of the urea solution, so as to adjust the target area of ​​the urea solution discharge cylinder 201. In this way, the way of controlling the movement of the adjustment plate 204 is automated and intelligent, and the operation is convenient and fast. By driving the adjustment plate 204 to move up and down along the height direction of the urea solution discharge cylinder 201, the space size of the urea solution discharge cylinder 201 and the feeding position of the urea solution can be adjusted, so that the urea solution can be better controlled to discharge urea from a predetermined position into the reaction container 102, so that the subsequent urea solution and formaldehyde can be better mixed.

[0047] Optionally, each target area corresponds to a plurality of electric atomizing nozzles 203. After the target area is determined, the electric atomizing nozzles 203 corresponding to the target area are controlled to be turned on. In this way, the electric atomizing nozzles 203 are used to atomize the urea and then discharge it. In combination with the rotation of the urea solution discharge cylinder 201, the urea can be quickly and evenly diffused in the urea solution discharge cylinder 201, which helps to quickly and evenly mix with formaldehyde.

[0048] It can be understood that the area inside the urea solution discharge cylinder 201 above the regulating plate 204 is the target area, and similarly the electric atomizing nozzle 203 above the regulating plate 204 is the electric atomizing nozzle 203 corresponding to the target area.

[0049] like Figure 6-7As shown, optionally, a conical collecting tank 104 is provided at the bottom of the inner side of the device body 100, and a three-way solenoid valve 105 is provided at the tip of the bottom of the collecting tank 104, wherein one of the outlets of the three-way solenoid valve 105 is a liquid outlet, and the other outlet is connected to a sampling and testing tube 106, and the sampling and testing tube 106 is used to sample and test the urea-formaldehyde pre-contracting liquid to determine the quality of the urea-formaldehyde pre-contracting liquid. In this way, the urea-formaldehyde pre-contracting liquid can be tested to ensure that the produced urea-formaldehyde pre-contracting liquid is discharged under qualified conditions, thereby ensuring the production quality.

[0050] Optionally, a plurality of stirring rods 107 are provided on the inner side of the liquid collecting tank 104, and the plurality of stirring rods 107 are respectively located in different planes, and each stirring rod 107 can be controlled to make a circular motion on the inner side of the liquid collecting tank 104 along the plane where it is located. In this way, the urea-formaldehyde pre-condensation liquid is stirred by the stirring rods 107 to avoid the urea-formaldehyde pre-condensation liquid from being precipitated or stratified due to being left still for a long time, and precipitation or stratification not only affects the appearance of the solution, but also may affect its performance and use effect, so stirring the urea-formaldehyde pre-condensation liquid can ensure the stability and consistency of its performance.

[0051] Optionally, the stirring rod 107 is disposed on the liquid collecting tank 104 through a driving assembly, and the driving assembly is used to drive the stirring rod 107 to make a circular motion on the inner side of the liquid collecting tank 104 to stir the urea-formaldehyde pre-contracted liquid in the liquid collecting tank 104, wherein the driving assembly is an electrically controlled slide rail. In this way, the urea-formaldehyde pre-contracted liquid in the liquid collecting tank 104 can be stirred by the stirring rod 107 to maintain its state stability and ensure quality.

[0052] Optionally, the stirring rods 107 located in different planes move in opposite directions. In this way, the urea-formaldehyde pre-shrinkage liquid can be stirred better and the stirring effect can be improved.

[0053] Optionally, there is a set distance between the stirring rod 107 and the vibration plate 103, wherein the set distance is greater than or equal to 5 cm and less than or equal to 10 cm. In this way, the influence between the two is reduced, ensuring that the vibration operation and the stirring operation can be performed independently and stably.

[0054] Optionally, the delivery pipe 402 has a portion located in the device body 100, and the portion is provided with a liquid spray head and a valve body for opening or closing the liquid spray head, and the sampling and detection tubes 106 are connected to the controller component 600. The controller component 600 is used to control the valve body to open the liquid spray head and deliver alkali solution into the liquid collecting tank 104 according to the quality of the urea-formaldehyde pre-contracting liquid and when the quality of the urea-formaldehyde pre-contracting liquid is unqualified. In this way, when the quality of the urea-formaldehyde pre-contracting liquid is unqualified, the valve body is controlled to open the liquid spray head to deliver alkali solution into the liquid collecting tank 104, so as to adjust the pH value of the urea-formaldehyde solution and improve the quality, thereby strictly controlling the quality of the urea-formaldehyde pre-contracting liquid produced, and avoiding the waste of resources and increase of production costs due to the unqualified quality of the urea-formaldehyde pre-contracting liquid.

[0055] Optionally, the drive assembly and the sampling detection tube 106 are both connected to the controller assembly 600. When the quality of the urea-formaldehyde pre-shrinkage liquid is unqualified, the control valve body opens the liquid spray head to inject alkali solution into the liquid collecting tank 104, and the control drive assembly drives the stirring rod 107 to make a circular motion on the inner side of the liquid collecting tank 104 to stir the urea-formaldehyde pre-shrinkage liquid in the liquid collecting tank 104. In this way, the alkali solution is better mixed with the urea-formaldehyde pre-shrinkage liquid, and the production quality of the urea-formaldehyde pre-shrinkage liquid is guaranteed.

[0056] Optionally, the release tube 302 and the delivery tube 402 are arranged in pairs, and the paired release tubes 302 and the paired delivery tubes 402 are symmetrical about the urea solution discharge cylinder 201. In this way, the delivered alkali solution can better adjust the reaction environment, and formaldehyde can also react with urea more quickly and evenly.

[0057] Combination Figure 8 As shown, the embodiment of the present disclosure provides a control method for a reactor for producing urea-formaldehyde pre-shrinkage liquid, which is used to control the reactor for producing urea-formaldehyde pre-shrinkage liquid as described in any one of the above items, comprising:

[0058] S01, obtaining reaction environment information in a reaction container;

[0059] S02, when the reaction environment does not meet the standard, controlling the alkali solution delivery structure to deliver alkali solution into the reaction container to adjust the reaction environment in the reaction container;

[0060] S03, obtaining discharge form information of the urea solution discharge structure into the reaction container;

[0061] S04, according to the discharge form of the urea solution discharge structure into the reaction container, controlling the formaldehyde release structure to release formaldehyde into the reaction container in a corresponding form.

[0062] By adopting the control method of the reactor for producing urea-formaldehyde pre-shrinkage liquid provided by the embodiment of the present disclosure, when producing urea-formaldehyde pre-shrinkage liquid, the rotary nozzle is controlled to add alkali solution into the reaction container, so as to adjust the reaction environment in the reaction container. The alkaline environment is more conducive to a better reaction between formaldehyde and urea solution, and a better reaction environment is provided for producing urea-formaldehyde pre-shrinkage liquid, so as to ensure the production quality of urea-formaldehyde pre-shrinkage liquid. The urea solution can be atomized by an electric atomizing nozzle and sprayed into the reaction container. At the same time, formaldehyde is released into the reaction container through a release tube, so that the two are discharged into the reaction container in a corresponding form and the two can contact and mix evenly at the first time. No complicated operation is required, so that the mixing reaction process is simplified and the mixing reaction time can be shortened. When the rotary nozzle sprays the alkali solution into the reaction container, the airflow will also disturb the flow of urea and formaldehyde, which is also conducive to the rapid and even mixing of the two, ensuring the mixing reaction effect while improving the reaction efficiency.

[0063] Optionally, before obtaining the discharge form information of the urea solution discharge structure discharging the urea solution into the reaction container, the method further includes: controlling the vibration plate to start. In this way, the reaction between formaldehyde and urea solution can be more thorough and comprehensive, thereby ensuring the production quality of urea-formaldehyde pre-shrinkage liquid.

[0064] Optionally, when the reaction environment does not meet the standard, the alkali solution delivery structure is controlled to deliver alkali solution into the reaction container to adjust the reaction environment in the reaction container, including: controlling the rotary nozzle to open and rotate to spray the alkali solution into the reaction container. In this way, when the rotary nozzle sprays the alkali solution into the reaction container, the airflow will also disturb the flow of urea and formaldehyde, which is also helpful to quickly and evenly mix the two, ensuring the mixing reaction effect while improving the reaction efficiency.

[0065] Optionally, according to the discharge form of the urea solution discharge structure into the reaction container, after the formaldehyde release structure is controlled to release formaldehyde into the reaction container in a corresponding form, it includes: controlling the three-way solenoid valve to open the outlet connected to the sampling and detection tube; sampling and detecting the urea-formaldehyde pre-shrinkage liquid obtained by mixing formaldehyde and urea solution; when the urea-formaldehyde pre-shrinkage liquid is tested to be qualified, controlling the liquid outlet of the three-way solenoid valve to open and perform the discharge operation; when the urea-formaldehyde pre-shrinkage liquid is tested to be unqualified, controlling the valve body to open the liquid spray head to add alkali solution into the liquid collecting tank. In this way, when the quality of the urea-formaldehyde pre-shrinkage liquid is unqualified, the valve body is controlled to open the liquid spray head to add alkali solution into the liquid collecting tank, which can adjust the pH value of the urea-formaldehyde solution and improve the quality, thereby strictly controlling the quality of the urea-formaldehyde pre-shrinkage liquid produced, and avoiding the waste of resources and increased production costs due to the unqualified quality of the urea-formaldehyde pre-shrinkage liquid.

[0066] It is worth mentioning that the qualified conditions for urea-formaldehyde pre-shrinkage liquid are that the total content of urea-formaldehyde pre-shrinkage liquid is 75%-85%, the UFC conversion rate is 95%, the free formaldehyde content is less than or equal to 1.5%, and the appearance of the urea-formaldehyde pre-shrinkage liquid is colorless, clear and transparent.

[0067] Optionally, according to the discharge form of the urea solution discharged into the reaction container by the urea solution discharge structure, controlling the formaldehyde release structure to release formaldehyde into the reaction container in a corresponding form includes: determining the amount of urea solution used; according to the amount of urea solution used, controlling the electric telescopic rod to drive the adjustment plate to move up and down along the height direction of the urea solution discharge cylinder to adjust the target area for the urea solution discharge cylinder to discharge the urea solution; according to the target area for the urea solution discharge cylinder to discharge the urea solution, controlling the formaldehyde release structure to release formaldehyde to the target area. In this way, by driving the adjustment plate to move up and down along the height direction of the urea solution discharge cylinder, the space size of the urea solution discharge cylinder and the feeding position of the urea solution can be adjusted, so that the urea solution can be better controlled to discharge urea from a predetermined position into the reaction container, so that the subsequent urea solution and formaldehyde can be better mixed and reacted.

[0068] Optionally, according to the amount of urea solution used, the electric telescopic rod is controlled to drive the adjustment plate to move up and down along the height direction of the urea solution discharge cylinder to adjust the target area of ​​the urea solution discharge cylinder to discharge the urea solution, including: determining the proportional relationship between the amount of urea solution used and the extension amount of the electric telescopic rod; according to the proportional relationship between the amount of urea solution used and the extension amount of the electric telescopic rod, controlling the extension and retraction of the electric telescopic rod. In this way, the extension and retraction of the telescopic rod can be accurately controlled to adjust the position of the adjustment plate, thereby better regulating the discharge of the urea solution.

[0069] Optionally, determining the proportional relationship between the amount of urea solution used and the amount of extension of the electric telescopic rod includes: the amount of urea solution used and the amount of extension of the electric telescopic rod are inversely proportional, wherein the greater the amount of urea solution used, the smaller the extension of the electric telescopic rod; and the smaller the amount of urea solution used, the greater the extension of the electric telescopic rod. In this way, when there is less urea solution, the urea solution can be concentrated on the upper part of the urea solution discharge cylinder, thereby providing sufficient time for the reaction, so that it can react quickly and fully with formaldehyde after discharge.

[0070] Optionally, according to the target area for discharging urea solution from the urea solution discharge cylinder, before controlling the formaldehyde release structure to release formaldehyde to the target area, the method further includes: determining an electric atomizing nozzle corresponding to the target area, and controlling the electric atomizing nozzle corresponding to the target area to be turned on. In this way, the urea is atomized and discharged by the electric atomizing nozzle, and the urea can be quickly and evenly diffused in the urea solution discharge cylinder in coordination with the rotation of the urea solution discharge cylinder, which is helpful for quick and even mixing with formaldehyde.

[0071] Combination Fig. 9 As shown, an embodiment of the present disclosure provides a reactor for producing urea-formaldehyde pre-contracted liquid, including a processor (processor) 700 and a memory (memory) 701. Optionally, the device may also include a communication interface (Communication Interface) 702 and a bus 703. Among them, the processor 700, the communication interface 702, and the memory 701 can communicate with each other through the bus 703. The communication interface 702 can be used for information transmission. The processor 700 can call the logic instructions in the memory 701 to execute the control method for the reactor for producing urea-formaldehyde pre-contracted liquid of the above embodiment.

[0072] In addition, the logic instructions in the memory 701 described above may be implemented in the form of software functional units and when sold or used as independent products, may be stored in a computer-readable storage medium.

[0073] The memory 701 is a computer-readable storage medium that can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 700 executes the function application and data processing by running the program instructions / modules stored in the memory 701, that is, the control method of the reactor for producing urea-formaldehyde pre-shrinkage liquid in the above embodiment is realized.

[0074] The memory 701 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 701 may include a high-speed random access memory and may also include a non-volatile memory.

[0075] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the control method of the reactor for producing urea-formaldehyde pre-shrinkage liquid.

[0076] An embodiment of the present disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the above-mentioned control method for a reactor for producing urea-formaldehyde pre-shrinkage liquid.

[0077] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0078] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0079] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method or device including the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0080] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0081] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0082] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A reactor for producing urea-formaldehyde pre-shrinkage liquid, characterized in that: include: A device body (100) is provided with a heater (101) thereon, a reaction container (102) is provided therein, a conical vibration plate (103) is provided at the bottom of the reaction container (102), a liquid discharge port and an electric control valve for controlling the opening or closing of the liquid discharge port are provided at the bottom of the vibration plate (103), wherein the heater (101) is used to controllably heat the interior of the reaction container (102); A urea solution discharge structure (200) comprises a urea solution discharge cylinder (201) and a driver (202); the urea solution discharge cylinder (201) is a hollow cylindrical structure, is arranged in a reaction container (102), and has a top that is rotatably connected to a top wall of a device body (100); a plurality of electric atomizing nozzles (203) are evenly arranged on the side of the urea solution discharge cylinder (201); the driver (202) is arranged on the top of the device body (100) and is connected to the top of the urea solution discharge cylinder (201), and is used to drive the urea solution discharge cylinder (201) rotates, wherein the urea solution discharge structure (200) further comprises an adjusting plate (204) and an electric telescopic rod (205), the adjusting plate (204) can be adaptively arranged in the urea solution discharge cylinder (201), the electric telescopic rod (205) is arranged at the bottom of the urea solution discharge cylinder (201), and the top of the electric telescopic rod (205) is connected to the adjusting plate (204), and is used to drive the adjusting plate (204) to move up and down along the height direction of the urea solution discharge cylinder (201), so as to adjust the target area of ​​the urea solution discharge cylinder (201) for discharging urea solution; The formaldehyde release structure (300) comprises a gas storage box (301) and a release tube (302), wherein the gas storage box (301) is arranged on the top of the device body (100), and the release tube (302) is arranged in the reaction container (102), and one end of the release tube (302) is connected to the gas storage box (301), wherein a plurality of release holes (303) are evenly opened on the side of the release tube (302), and each release hole (303) is correspondingly provided with an electrically controlled switch valve; The alkali solution delivery structure (400) comprises a liquid storage tank (401), a delivery pipe (402) and a rotating nozzle (403); the liquid storage tank (401) is arranged on the device body (100); one end of the delivery pipe (402) is connected to the liquid storage tank (401) and the other end is inserted into the reaction container (102); the rotating nozzle (403) is arranged on the portion of the delivery pipe (402) located in the reaction container (102); A detection component (500) is used to detect reaction environment information in the reaction container (102), and to obtain discharge form information of the urea solution discharged into the reaction container (102) by the urea solution discharge structure (200); The controller component (600) is connected to the detection component (500), the alkali solution delivery structure (400), the formaldehyde release structure (300) and the urea solution discharge structure (200), and is used to control the alkali solution delivery structure (400) to deliver alkali solution into the reaction container (102) and adjust the reaction environment in the reaction container (102) based on the reaction environment information in the reaction container (102) and when the reaction environment does not meet the standards, and to control the formaldehyde release structure (300) to release formaldehyde into the reaction container (102) in a corresponding form based on the discharge form information of the urea solution discharge structure (200) into the reaction container (102).

2. The reactor for producing urea-formaldehyde pre-shrinkage liquid according to claim 1, characterized in that: The detection component (500) is also used to detect the usage amount of the urea solution. The electric telescopic rod (205) and the detection component (500) are both connected to the controller component (600). The controller component (600) is used to control the electric telescopic rod (205) to drive the adjustment plate (204) to move up and down along the height direction of the urea solution discharge cylinder (201) according to the usage amount of the urea solution, so as to adjust the target area of ​​the urea solution discharge cylinder (201) for discharging the urea solution.

3. The reactor for producing urea-formaldehyde pre-shrinkage liquid according to claim 1, characterized in that: A conical liquid collecting tank (104) is provided at the bottom of the inner side of the device body (100), and a three-way solenoid valve (105) is provided at the tip of the bottom of the liquid collecting tank (104), wherein one of the outlets of the three-way solenoid valve (105) is a liquid outlet, and the other outlet is connected to a sampling detection tube (106), and the sampling detection tube (106) is used to sample and detect the urea-formaldehyde pre-shrinkage liquid to determine the quality of the urea-formaldehyde pre-shrinkage liquid.

4. The reactor for producing urea-formaldehyde pre-shrinkage liquid according to claim 3, characterized in that: A plurality of stirring rods (107) are arranged on the inner side surface of the liquid collecting tank (104), and the plurality of stirring rods (107) are respectively located in different planes, and each stirring rod (107) can be controlled to perform circular motion on the inner side surface of the liquid collecting tank (104) along the plane where it is located.

5. The reactor for producing urea-formaldehyde pre-shrinkage liquid according to claim 3, characterized in that: The delivery pipe (402) has a portion located inside the device body (100), and a liquid spray head and a valve body for opening or closing the liquid spray head are arranged on the portion. The sampling detection tube (106) is connected to the controller component (600). The controller component (600) is used to control the valve body to open the liquid spray head and deliver alkali solution into the liquid collecting tank (104) according to the quality of the urea-formaldehyde pre-shrinkage liquid and when the quality of the urea-formaldehyde pre-shrinkage liquid is unqualified.

6. The reactor for producing urea-formaldehyde pre-shrinkage liquid according to any one of claims 1 to 5, characterized in that: The release tubes (302) and the delivery tubes (402) are both arranged in pairs, and the release tubes (302) and the delivery tubes (402) arranged in pairs are both symmetrical with respect to the urea solution discharge cylinder (201).

7. A method for controlling a reactor for producing urea-formaldehyde pre-shrinkage liquid, for controlling the reactor for producing urea-formaldehyde pre-shrinkage liquid according to any one of claims 1 to 6, characterized in that: include: Acquiring reaction environment information in the reaction container; When the reaction environment does not meet the standard, the alkali solution delivery structure is controlled to deliver alkali solution into the reaction container to adjust the reaction environment in the reaction container; Acquiring discharge form information of the urea solution discharge structure into the reaction container; According to the discharge form of the urea solution discharged into the reaction container by the urea solution discharge structure, the formaldehyde release structure is controlled to release formaldehyde into the reaction container in a corresponding form.

8. The control method for a reactor for producing urea-formaldehyde pre-shrinkage liquid according to claim 7, characterized in that: According to the discharge form of the urea solution discharge structure into the reaction container, controlling the formaldehyde release structure to release formaldehyde into the reaction container in a corresponding form includes: Determine the amount of urea solution to be used; According to the usage of urea solution, the electric telescopic rod is controlled to drive the adjustment plate to move up and down along the height direction of the urea solution discharge cylinder, so as to adjust the target area of ​​the urea solution discharge cylinder to discharge the urea solution; According to the target area where the urea solution is discharged from the urea solution discharge cylinder, the formaldehyde releasing structure is controlled to release formaldehyde to the target area.

9. A reactor for producing urea-formaldehyde pre-shrinkage liquid, comprising a processor (700) and a memory (701) storing program instructions, characterized in that: The processor (700) is configured to execute the control method for a reactor for producing urea-formaldehyde pre-shrinkage liquid according to any one of claims 7 to 8 when running the program instructions.

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