Device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde and control method thereof

Abstract

The present application relates to the field of chemical technology, and discloses a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, comprising: a machine body, a pretreatment structure, a stirring container, a detection component and a controller component. The control driving structure drives the corresponding processing plate to rotate and adjust the tilt angle, and controls one or more of the electric heating block, the electric heating rod and the electric heating tube to preheat the mixed liquid flowing through its position according to the time taken for the temperature of the mixed solution to reach the set temperature. In the present application, by pre-treating the two solutions better in the early stage, the two solutions can be quickly and evenly mixed and reacted after being sent into the stirring container, so as to quickly complete the production of urea-formaldehyde pre-shrinkage liquid, which takes less time, improves production efficiency and ensures production quality. The present application also discloses a control method for a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde.

Description

Technical Field

[0001] The present application relates to the field of chemical technology, for example, to a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde 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] There have been many reports on the preparation of urea-formaldehyde pre-shrinkage liquid. The preparation method is generally to absorb a mixed gas containing formaldehyde and a solution containing urea. However, the current preparation devices mostly directly put the two raw materials into a stirrer for mixing, and produce urea-formaldehyde pre-shrinkage liquid after a long period of stirring, which leads to slow reaction, long time consumption, reduced production efficiency, and difficulty in ensuring production quality.

[0004] Therefore, how to make the raw materials react quickly, shorten the production time, and efficiently complete the production of urea-formaldehyde pre-shrinkage liquid 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 device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde and a control method thereof. By pre-treating the two solutions better in the early stage, the two solutions can be quickly and evenly mixed and reacted after being sent into a stirring container, so as to quickly complete the production of urea-formaldehyde pre-shrinkage liquid, shorten the time consumption, improve production efficiency, and ensure production quality.

[0008] In some embodiments, a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde includes: a body, a pretreatment structure, a stirring container, a detection component and a controller component. The machine body is provided with a first tank body and a second tank body on opposite sides thereof, the first tank body is provided with formaldehyde solution, a spraying plate is arranged in the machine body, the first tank body is connected with the spraying plate through a first conveying pipe, the second tank body is provided with urea solution, a liquid discharge nozzle is arranged on the side wall of the machine body, and the second tank body is connected with the liquid discharge nozzle through a second conveying pipe, wherein a first heater is arranged at the bottom of the machine body; the pretreatment structure comprises a first treatment plate, a second treatment plate, a third treatment plate and a driving structure, one side edge of the first treatment plate is rotatably connected with the inner side surface of the side wall of the machine body provided with the second tank body, and the first treatment plate is located at the lower side of the spraying plate, wherein a plurality of electric heating blocks are evenly arranged on the first treatment plate, one side edge of the second treatment plate is rotatably connected with the inner side surface of the side wall of the machine body provided with the first tank body, and the second treatment plate is located at the lower side of the first treatment plate, wherein an electric heating rod is movably arranged on the second treatment plate, one side edge of the third treatment plate is rotatably connected with the inner side surface of the side wall of the machine body provided with the second tank body, and the third treatment plate is located at the lower side of the second treatment plate side, wherein the third processing plate is provided with an electric heating pipe, and the driving structure has multiple, and the first processing plate, the second processing plate and the third processing plate are respectively installed with a driving structure for driving them to rotate; the stirring container is arranged in the machine body and is located between the third processing plate and the first heater, wherein one end of the stirring container is provided with an upward feeding port, and the feeding port corresponds to the bottom end of the third processing plate, and the stirring container is connected with a discharge pipe connected to the outside of the machine body; the detection component is used to obtain the mixing degree information of the formaldehyde solution and the urea solution, and the time taken for the temperature of the mixed solution to reach the set temperature; the controller component is connected to the detection component, the driving structure of each processing plate, the electric heating block, the electric heating rod and the electric heating pipe, and is used to control the driving structure to drive the corresponding processing plate to rotate and adjust the inclination angle according to the mixing degree information of the formaldehyde solution and the urea solution, and control one or more of the electric heating block, the electric heating rod and the electric heating pipe to preheat the mixed liquid flowing through its position according to the time taken for the temperature of the mixed solution to reach the set temperature.

[0009] In some embodiments, a control method for a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, used to control the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde as described in any one of the above, comprises:

[0010] Obtaining information on the degree of mixing of the formaldehyde solution and the urea solution;

[0011] According to the mixing degree information of the formaldehyde solution and the urea solution, the driving structure is controlled to drive the corresponding processing plate to rotate and adjust the tilt angle;

[0012] Obtain the time taken for the mixed solution temperature to reach the set temperature;

[0013] According to the time taken for the temperature of the mixed solution to reach the set temperature, one or more of the electric heating block, the electric heating rod and the electric heating tube are controlled to preheat the mixed liquid flowing through the location thereof.

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

[0015] By adjusting the inclination angle of the treatment plate, the flow rate of the mixed solution on the treatment plate can be slowed down, thereby controlling the flow time, and the formaldehyde solution and the urea solution can be better mixed on the treatment plate. By controlling one or more of the electric heating blocks, electric heating rods and electric heating tubes to preheat the mixed liquid flowing through their positions, the mixed solution can quickly reach the heating temperature of the first heater after entering the stirring container, and then by better pretreating the two solutions in the early stage, the two solutions can be quickly and evenly mixed and reacted after being sent to the stirring container, so as to quickly complete the production of urea-formaldehyde pre-shrinkage liquid, shorten the time consumption, improve production efficiency, and ensure production quality.

[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 device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde provided in an embodiment of the present disclosure;

[0019] Figure 2 is a schematic structural diagram of another device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde provided in an embodiment of the present disclosure;

[0020] Figure 3 is a schematic diagram of the structure of the collective provided by the embodiment of the present disclosure;

[0021] Figure 4 is a structural schematic diagram of a sampling detection structure provided in an embodiment of the present disclosure;

[0022] Figure 5 is a schematic structural diagram of an auxiliary agent adding structure provided in an embodiment of the present disclosure;

[0023] Figure 6 is a schematic diagram of a control method for a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde provided by an embodiment of the present disclosure;

[0024] Figure 7is a schematic diagram of another control method for a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde provided by an embodiment of the present disclosure;

[0025] Figure 8 It is a schematic structural diagram of another device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 100, machine body; 101, first heater; 102, heat insulation board; 103, exhaust gas processor; 104, condenser; 105, exhaust pipe; 106, sampling and detection structure; 107, material taking pipe; 108, detection box; 109, additive adding structure; 110, material storage box; 111, material discharge pipe; 112, cooling box; 113, fixing frame; 200, first tank body; 201, spray plate; 202, first conveying pipe; 203, second heater; 300, second tank body ; 301, discharge nozzle; 302, second delivery pipe; 400, pretreatment structure; 401, first treatment plate; 402, second treatment plate; 403, third treatment plate; 404, drive structure; 405, electric heating block; 406, electric heating rod; 407, electric heating tube; 500, stirring container; 501, delivery port; 502, discharge pipe; 600, detection component; 700, controller component; 800, processor; 801, memory; 802, communication interface; 803, bus. DETAILED DESCRIPTION

[0028] 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.

[0029] 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 that 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.

[0030] 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.

[0031] 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.

[0032] Unless otherwise stated, the term "plurality" means two or more.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] Combination Figure 1-3As shown, the embodiment of the present disclosure provides a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, comprising: a machine body 100, a pretreatment structure 400, a stirring container 500, a detection component 600 and a controller component 700. The machine body 100 is respectively provided with a first tank body 200 and a second tank body 300 on opposite sides thereof, wherein the first tank body 200 is filled with formaldehyde solution, a spray plate 201 is provided in the machine body 100, the first tank body 200 is connected with the spray plate 201 through a first delivery pipe 202, the second tank body 300 is filled with urea solution, a liquid discharge nozzle 301 is provided on the side wall of the machine body 100, and the second tank body 300 is connected with the liquid discharge nozzle 301 through a second delivery pipe 302, wherein a first heater 101 is installed at the bottom of the machine body 100; the pretreatment structure 400 comprises a first treatment plate 401, a second treatment plate 402, a third treatment plate 403 and a driving structure 404. , one side of the first processing plate 401 is rotatably connected to the inner side of the side wall of the body 100 on which the second tank body 300 is installed, and the first processing plate 401 is located at the lower side of the spray plate 201, wherein a plurality of electric heating blocks 405 are evenly arranged on the first processing plate 401, one side of the second processing plate 402 is rotatably connected to the inner side of the side wall of the body 100 on which the first tank body 200 is installed, and the second processing plate 402 is located at the lower side of the first processing plate 401, wherein the second processing plate 402 is movably provided with an electric heating rod 406, one side of the third processing plate 403 is rotatably connected to the inner side of the side wall of the body 100 on which the second tank body 300 is installed, and the third The processing plate 403 is located at the lower side of the second processing plate 402, wherein the third processing plate 403 is provided with an electric heating pipe 407, and the driving structure 404 has a plurality of driving structures, and the first processing plate 401, the second processing plate 402 and the third processing plate 403 are respectively provided with a driving structure 404 for driving the rotation thereof; the stirring container 500 is arranged in the machine body 100 and is located between the third processing plate 403 and the first heater 101, wherein one end of the stirring container 500 is provided with an upward delivery port 501, and the delivery port 501 corresponds to the bottom end of the third processing plate 403, and the stirring container 500 is connected with a discharge pipe 502 communicated with the outside of the machine body 100; The detection component 600 is used to obtain the mixing degree information of the formaldehyde solution and the urea solution, and the time taken for the temperature of the mixed solution to reach the set temperature; the controller component 700 is connected to the detection component 600, the driving structure 404 of each processing plate, the electric heating block 405, the electric heating rod 406 and the electric heating tube 407, and is used to control the driving structure 404 to drive the corresponding processing plate to rotate and adjust the tilt angle according to the mixing degree information of the formaldehyde solution and the urea solution, and to control one or more of the electric heating block 405, the electric heating rod 406 and the electric heating tube 407 to preheat the mixed liquid flowing through its position according to the time taken for the temperature of the mixed solution to reach the set temperature.

[0037] By using the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde provided by the embodiment of the present disclosure, the flow speed of the mixed solution on the treatment plate can be slowed down by adjusting the inclination angle of the treatment plate, thereby controlling the flow time, and the formaldehyde solution and the urea solution can be better mixed on the treatment plate. By controlling one or more of the electric heating block 405, the electric heating rod 406 and the electric heating tube 407 to preheat the mixed liquid flowing through their positions, the mixed solution can quickly reach the heating temperature of the first heater 101 after entering the stirring container 500, and then by better pre-treating the two solutions in the early stage, the two solutions can be quickly and evenly mixed and reacted after being sent into the stirring container 500, so as to quickly complete the production of urea-formaldehyde pre-shrinkage liquid, save time, improve production efficiency, and ensure production quality.

[0038] Optionally, a delivery pump is provided on the first delivery pipe 202, and a valve body is provided on the second delivery pipe 302. In this way, the delivery of the formaldehyde solution and the urea solution can be better controlled, and the delivery stability can be improved.

[0039] Optionally, the electric heating tubes 407 are arranged in a serpentine shape in the third processing plate 403. In this way, the electric heating tubes 407 can be used to better heat the mixed liquid on the third processing plate 403, increase the uniformity of heating, and improve the heating effect.

[0040] Optionally, the position where the first processing plate 401 is connected to the side wall of the machine body 100 is located at the lower side of the drain nozzle 301, and there is a set distance between the first processing plate 401 and the other side wall of the machine body 100. In this way, it is ensured that the urea solution can flow smoothly to the first processing plate 401, and the urea solution can stably flow along the first processing plate 401 to the second processing plate 402 below it.

[0041] It can be understood that the first processing plate 401 and the third processing plate 403 have a set distance from the side wall of the body 100, which will not be described in detail here. The driving structure 404 for driving the processing plate to rotate is a driving motor, which will not be described in detail here.

[0042] Optionally, the first processing plate 401, the second processing plate 402 and the third processing plate 403 are arranged in a stepped manner in the body 100, wherein the lower end of the processing plate located at the top corresponds to the higher end of the processing plate located at the bottom. In this way, the mixed solution can flow smoothly and stably along the first processing plate 401, the second processing plate 402 and the third processing plate 403 in sequence, and after pretreatment, flow into the stirring container 500.

[0043] Optionally, the spray plate 201 corresponds to the middle of the first processing plate 401 or the side of the first processing plate 401 close to the second tank 300. In this way, the formaldehyde solution sprayed to the first processing plate 401 can be better mixed with the urea solution, the mixing time of the two can be extended, and the mixing effect can be ensured.

[0044] Optionally, the electric heating rods 406 are arranged in pairs, and one end of the paired electric heating rods 406 is slidably connected to the inner wall of the body 100. In this way, the electric heating rods 406 can stir the mixed solution by sliding while heating the mixed solution, thereby improving the mixing effect.

[0045] Optionally, a cooling box 112 is provided at one side of the bottom of the machine body 100, and the cooling box 112 corresponds to the outlet of the discharge pipe 502. In this way, the cooling box 112 is used to receive the produced urea-formaldehyde pre-shrinkage liquid and cool the urea-formaldehyde pre-shrinkage liquid.

[0046] Optionally, the heating temperature of the electric heating block 405 is 20°C-30°C, the heating temperature of the electric heating rod 406 is 30°C-40°C, the heating temperature of the electric heating tube 407 is 40°C-50°C, and the heating temperature of the first heater 101 is 80°C-100°C. In this way, along the flow direction of the mixed solution, the heating temperature is successively increased, so that the formaldehyde solution will not precipitate due to low temperature, and will not volatilize quickly due to excessive temperature. At the same time, the mixed solution is preheated, so that the mixed solution entering the stirring container 500 can quickly reach the reaction temperature, thereby improving the reaction efficiency.

[0047] It can be understood that the stirring container 500 is a spiral stirrer, which is a prior art and its specific structure will not be repeated here. The detection component 600 is one or more of an image recognition camera and a temperature sensor, which are both prior art. In addition, the formaldehyde solution can also be stored in the second tank body 300, and the urea solution can be stored in the first tank body 200, which will not be repeated here.

[0048] Optionally, a heat insulating plate 102 is provided between the third processing plate 403 and the stirring container 500, and a through hole corresponding to the injection port 501 is provided on the heat insulating plate 102. In this way, the temperature of the first heater 101 is isolated, and the influence of the bottom temperature in the body 100 on the preheating treatment of the mixed solution is reduced.

[0049] Optionally, the through hole is connected to the delivery port 501 and is separated from the space where the stirring container 500 is located. In this way, the transfer between temperatures can be completely blocked, ensuring that the preheating treatment and the reaction can be carried out in an orderly and stable manner.

[0050] Optionally, the end of the third processing plate 403 corresponding to the delivery port 501 is V-shaped, and baffles are provided on both sides of the V-shaped area of ​​the delivery port 501. In this way, the mixed liquid on the third processing plate 403 can flow into the stirring container 500 stably, avoiding loss and saving costs.

[0051] Optionally, the spray plate 201 is rotatably disposed in the machine body 100. In this way, the installation of the spray plate 201 is more flexible, and the direction of the spray plate 201 is convenient to adjust, so that the sprayed formaldehyde solution can be better mixed with the urea solution, thereby improving the mixing effect.

[0052] Optionally, a fixing frame 113 is horizontally arranged in the machine body 100, and the spray plate 201 is connected to one end of the fixing frame 113 via a rotating shaft. In this way, the structure is simple, easy to operate, and space occupation is reduced.

[0053] Optionally, the first delivery pipe 202 is an elastic pipe. In this way, the rotation of the rotating spray plate 201 affects the first delivery pipe 202, ensuring that the rotation adjustment and the formaldehyde solution delivery can be carried out stably.

[0054] Optionally, the top of the body 100 is provided with a connected exhaust gas processor 103 and a condenser 104 in sequence from top to bottom, and the air inlet of the condenser 104 is connected to the inside of the body 100, and the top wall of the body 100 is provided with an exhaust pipe 105 connected to the exhaust gas processor 103. In this way, when the exhaust gas diffuses to the top of the body 100, the gas first passes through the condenser 104, and the formaldehyde gas in the exhaust gas can be liquefied under the action of the condenser 104, and then discharged to the first processing plate 401 in the box body after liquefaction, and re-participates in the reaction to reduce losses, while the remaining gas is purified under the action of the exhaust gas processor 103, and discharged after reaching the standard, which is more environmentally friendly.

[0055] Optionally, a second heater 203 is provided on the first tank body 200. Thus, the first tank body 200 is heated by the second heater 203, so that the formaldehyde solution will not polymerize when heated, so as to avoid blockage of the formaldehyde solution when it is transported to the machine body 100 through the first delivery pipe 202.

[0056] like Figure 4 As shown, optionally, the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde further includes: a sampling and detection structure 106. The sampling and detection structure 106 includes a material taking pipe 107 and a detection box 108. One end of the material taking pipe 107 is connected to the portion of the discharge pipe 502 located outside the machine body 100 through a first control valve. The detection box 108 is arranged on one side of the machine body 100 and corresponds to the outlet of the material taking pipe 107. In this way, the urea-formaldehyde solution can be detected, and the urea-formaldehyde pre-shrinkage liquid produced can be discharged under qualified conditions, thereby ensuring the production quality.

[0057] Optionally, a second control valve is provided on the discharge pipe 502, and the connection point between the material taking pipe 107 and the discharge pipe 502 is located between the machine body 100 and the second control valve. In this way, it is ensured that both the discharge operation and the sampling and testing operation can be carried out in an orderly and stable manner.

[0058] like Figure 5 As shown, optionally, the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde further includes: an auxiliary agent adding structure 109. The auxiliary agent adding structure 109 includes a storage box 110 and a feed pipe 111. The storage box 110 is arranged on one side of the machine body 100. One end of the feed pipe 111 is connected to the storage box 110, and the other end is located in the machine body 100 and corresponds to the feeding port 501 of the stirring container 500. In this way, by adding reaction auxiliary agents, the reaction effect can be enhanced and the production quality can be guaranteed. For example, when the urea-formaldehyde solution is unqualified, sodium hydroxide solution is added to the stirring container 500 to adjust the pH value of the urea-formaldehyde solution and improve the quality, or a proper amount of melamine is added to the stirring container 500, so as to reduce the amount of free formaldehyde.

[0059] It is worth noting that the storage box 110 stores a reaction aid, and the reaction aid is melamine or alkali solution.

[0060] Combination Figure 6-7 As shown, the embodiment of the present disclosure provides a control method for a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, which is used to control the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde as described in any one of the above items, comprising:

[0061] S01, obtaining information on the degree of mixing of the formaldehyde solution and the urea solution;

[0062] S02, according to the mixing degree information of the formaldehyde solution and the urea solution, controlling the driving structure to drive the corresponding processing plate to rotate and adjust the tilt angle;

[0063] S03, obtaining the time taken for the mixed solution temperature to reach the set temperature;

[0064] S04, according to the time taken for the temperature of the mixed solution to reach the set temperature, controlling one or more of the electric heating block, the electric heating rod and the electric heating tube to preheat the mixed liquid flowing through the location thereof.

[0065] By adopting the control method of the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde provided by the embodiment of the present disclosure, the flow speed of the mixed solution on the treatment plate can be slowed down by adjusting the inclination angle of the treatment plate, thereby controlling the flow time, and the formaldehyde solution and the urea solution can be better mixed on the treatment plate. By controlling one or more of the electric heating blocks, electric heating rods and electric heating tubes to preheat the mixed liquid flowing through their positions, the mixed solution can quickly reach the heating temperature of the first heater after entering the stirring container, and then by better pre-treating the two solutions in the early stage, the two solutions can be quickly and evenly mixed and reacted after being sent to the stirring container, so as to quickly complete the production of urea-formaldehyde pre-shrinkage liquid, shorten the time consumption, improve production efficiency, and ensure production quality.

[0066] Optionally, before obtaining the information on the degree of mixing of the formaldehyde solution and the urea solution, the method includes: obtaining the state information of the formaldehyde solution; and controlling the first heater to heat the first tank according to the state information of the formaldehyde solution. In this way, the first tank is heated by the second heater so that the formaldehyde solution will not polymerize when heated, so as to avoid blockage when the formaldehyde solution is transported to the machine body through the first transport pipe.

[0067] Optionally, after obtaining the mixing degree information of the formaldehyde solution and the urea solution, the method further includes: when the mixing degree does not reach the target degree, controlling the spray plate to rotate and adjust its orientation toward the first processing plate. In this way, the installation of the spray plate is more flexible, and the orientation of the spray plate can be adjusted conveniently, so that the sprayed formaldehyde solution can be better mixed with the urea solution, thereby improving the mixing effect.

[0068] Optionally, after obtaining the mixing degree information of the formaldehyde solution and the urea solution, the method further includes: when the mixing degree does not reach the target degree, controlling the electric heating rod to slide to stir the mixed solution. In this way, the electric heating rod can stir the mixed solution by sliding while heating the mixed solution, thereby improving the mixing effect.

[0069] Optionally, the mixing degree information includes: the mixing degree of the formaldehyde solution and the urea solution is less than 40%, the mixing degree of the formaldehyde solution and the urea solution is greater than or equal to 40% and less than or equal to 80%, and the mixing degree of the formaldehyde solution and the urea solution is greater than 80%. In this way, the mixing degree of the mixed solution is divided into three types, and the mixing condition of the mixed solution can be quickly determined, so as to better adjust the flow speed of the mixed solution by controlling the inclination angle of the processing plate.

[0070] Optionally, according to the mixing degree information of the formaldehyde solution and the urea solution, controlling the driving structure to drive the corresponding processing plate to rotate and adjust the tilt angle includes: when the mixing degree of the formaldehyde solution and the urea solution is less than 40%, controlling the tilt angle of each processing plate to be less than 10 degrees; when the mixing degree of the formaldehyde solution and the urea solution is greater than or equal to 40% and less than or equal to 80%, controlling the tilt angle of each processing plate to be between 10 degrees and 15 degrees; when the mixing degree of the formaldehyde solution and the urea solution is greater than 80%, controlling the tilt angle of each processing plate to be between 15 degrees and 30 degrees. In this way, based on the low mixing degree, by reducing the tilt angle of the processing plate, the flow rate of the mixed solution can be slowed down, so that the mixed solution has enough time to mix on the processing plate.

[0071] Optionally, according to the time taken for the temperature of the mixed solution to reach the set temperature, one or more of the electric heating block, the electric heating rod and the electric heating tube are controlled to preheat the mixed liquid flowing through the position thereof, including: when the time taken is greater than or equal to 5 minutes and less than or equal to 8 minutes, the heating block on the first treatment plate is controlled to preheat the mixed solution thereon; when the time taken is greater than 8 minutes and less than or equal to 12 minutes, the heating block on the first treatment plate is controlled to preheat the mixed solution thereon and the heating rod on the second treatment plate is controlled to preheat the mixed solution thereon; when the time taken is greater than 12 minutes, the electric heating block, the electric heating rod and the electric heating tube are controlled to preheat the mixed liquid flowing through each of the positions thereof. In this way, the mixed solution can be preheated reasonably. When the time is long, it indicates that the preheating is insufficient. Therefore, by increasing the preheating method, the mixed solution can be made closer to the reaction temperature so that the reaction can be completed quickly after entering the stirring container.

[0072] Optionally, when the time taken is greater than or equal to the set time, after controlling one or more of the electric heating block, the electric heating rod and the electric heating tube to preheat the mixed liquid flowing through the position thereof, the method further includes: obtaining the volume information of the mixed solution in the stirring container; when the volume of the mixed solution is greater than or equal to one third of the volume of the stirring container, controlling the stirring container to start. In this way, the timing of starting stirring is more reasonable, and the temperature of the mixed solution can be adjusted at any time to improve the reaction efficiency, while avoiding overreaction.

[0073] Optionally, when the time taken is greater than or equal to the set time, after controlling one or more of the electric heating block, the electric heating rod and the electric heating tube to preheat the mixed liquid flowing through the position thereof, the method includes: S05, sampling and testing the urea-formaldehyde pre-contraction liquid prepared by mixing the formaldehyde solution and the urea solution; S06, when the urea-formaldehyde pre-contraction liquid is tested to be qualified, controlling the discharge pipe to discharge the prepared urea-formaldehyde pre-contraction liquid; S07, when the urea-formaldehyde pre-contraction liquid is tested to be unqualified, controlling the auxiliary agent adding structure to add the reaction auxiliary agent into the stirring container. In this way, by sampling and testing the urea-formaldehyde pre-contraction liquid, the purpose of strictly controlling the quality of the urea-formaldehyde pre-contraction liquid can be achieved, and the situation of wasting resources and increasing production costs due to the unqualified quality of the urea-formaldehyde pre-contraction liquid can be avoided.

[0074] 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.

[0075] Optionally, sampling and testing the urea-formaldehyde pre-shrinkage liquid prepared by mixing the formaldehyde solution and the urea solution includes: sampling and testing once every preset time, wherein the preset time is greater than or equal to 10 minutes and less than or equal to 20 minutes. In this way, the time control of sampling and testing is more reasonable, and the production quality of the urea-formaldehyde pre-shrinkage liquid can be guaranteed.

[0076] Combination Figure 8 As shown, an embodiment of the present disclosure provides a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, including a processor (processor) 800 and a memory (memory) 801. Optionally, the device may also include a communication interface (Communication Interface) 802 and a bus 803. Among them, the processor 800, the communication interface 802, and the memory 801 can communicate with each other through the bus 803. The communication interface 802 can be used for information transmission. The processor 800 can call the logic instructions in the memory 801 to execute the control method for the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde in the above embodiment.

[0077] In addition, the logic instructions in the memory 801 described above can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0078] The memory 801 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 800 executes the function application and data processing by running the program instructions / modules stored in the memory 801, that is, the control method of the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde in the above embodiment is realized.

[0079] The memory 801 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 801 may include a high-speed random access memory and may also include a non-volatile memory.

[0080] 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 device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde.

[0081] 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 control method of the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde.

[0082] The computer-readable storage medium mentioned above may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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 device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, characterized in that: include: A machine body (100) is provided with a first tank body (200) and a second tank body (300) on two opposite sides thereof, the first tank body (200) is filled with a formaldehyde solution, a spray plate (201) is provided in the machine body (100), the first tank body (200) is connected to the spray plate (201) via a first delivery pipe (202), the second tank body (300) is filled with a urea solution, a liquid discharge nozzle (301) is provided on a side wall of the machine body (100), the second tank body (300) is connected to the liquid discharge nozzle (301) via a second delivery pipe (302), wherein a first heater (101) is provided at the bottom of the machine body (100); The pre-treatment structure (400) comprises a first treatment plate (401), a second treatment plate (402), a third treatment plate (403) and a driving structure (404), wherein one side of the first treatment plate (401) is rotatably connected to the inner side of the side wall of the machine body (100) on which the second tank body (300) is installed, and the first treatment plate (401) is located at the lower side of the spraying plate (201), wherein a plurality of electric heating blocks (405) are evenly arranged on the first treatment plate (401), one side of the second treatment plate (402) is rotatably connected to the inner side of the side wall of the machine body (100) on which the first tank body (200) is installed, and the second treatment plate (402) Located at the lower side of the first processing plate (401), wherein the second processing plate (402) is movably provided with an electric heating rod (406), one side edge of the third processing plate (403) is rotatably connected to the inner side surface of the side wall of the machine body (100) on which the second tank body (300) is installed, and the third processing plate (403) is located at the lower side of the second processing plate (402), wherein the third processing plate (403) is provided with an electric heating pipe (407), and the driving structure (404) has a plurality of driving structures (404), and the first processing plate (401), the second processing plate (402) and the third processing plate (403) are respectively provided with a corresponding driving structure (404) for driving the rotation thereof; A stirring container (500) is arranged in the machine body (100) and is located between the third processing plate (403) and the first heater (101), wherein an upward delivery port (501) is provided at one end of the stirring container (500), and the delivery port (501) corresponds to the bottom end of the third processing plate (403), and a discharge pipe (502) connected to the outside of the machine body (100) is connected to the stirring container (500); A detection component (600) is used to obtain information on the degree of mixing of the formaldehyde solution and the urea solution, and the time taken for the temperature of the mixed solution to reach a set temperature; The controller component (700) is connected to the detection component (600), the driving structure (404) of each processing plate, the electric heating block (405), the electric heating rod (406), and the electric heating tube (407), and is used to control the driving structure (404) to drive the corresponding processing plate to rotate and adjust the tilt angle according to the mixing degree information of the formaldehyde solution and the urea solution, and to control one or more of the electric heating block (405), the electric heating rod (406), and the electric heating tube (407) to preheat the mixed liquid flowing through the position thereof according to the time taken for the temperature of the mixed solution to reach a set temperature.

2. The device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to claim 1, characterized in that: A heat insulation plate (102) is provided between the third processing plate (403) and the stirring container (500), and a through hole corresponding to the delivery port (501) is provided on the heat insulation plate (102).

3. The device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to claim 1, characterized in that: The spray plate (201) is rotatably disposed in the machine body (100).

4. The device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to claim 1, characterized in that: An exhaust gas processor (103) and a condenser (104) are arranged in sequence from top to bottom in the top of the machine body (100), and an air inlet of the condenser (104) is connected to the inside of the machine body (100). An exhaust pipe (105) connected to the exhaust gas processor (103) is arranged on the top wall of the machine body (100).

5. The device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to claim 1, characterized in that: A second heater (203) is provided on the first tank body (200).

6. The device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to any one of claims 1 to 5, characterized in that: Also includes: The sampling and detection structure (106) comprises a material taking pipe (107) and a detection box (108); one end of the material taking pipe (107) is connected to a portion of the discharge pipe (502) located outside the machine body (100) via a first control valve; and the detection box (108) is arranged on one side of the machine body (100) and corresponds to the outlet of the material taking pipe (107).

7. The device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to any one of claims 1 to 5, characterized in that: Also includes: The auxiliary agent adding structure (109) comprises a material storage box (110) and a material discharge pipe (111); the material storage box (110) is arranged on one side of the machine body (100); one end of the material discharge pipe (111) is connected to the material storage box (110), and the other end is located in the machine body (100) and corresponds to the feeding port (501) of the stirring container (500).

8. A control method for a device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, used for controlling the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde as claimed in any one of claims 1 to 7, characterized in that: include: Obtaining information on the degree of mixing of the formaldehyde solution and the urea solution; According to the mixing degree information of the formaldehyde solution and the urea solution, the driving structure is controlled to drive the corresponding processing plate to rotate and adjust the tilt angle; Obtain the time taken for the mixed solution temperature to reach the set temperature; According to the time taken for the temperature of the mixed solution to reach the set temperature, one or more of the electric heating block, the electric heating rod and the electric heating tube are controlled to preheat the mixed liquid flowing through the location thereof.

9. The control method for the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to claim 8, characterized in that: When the time used is greater than or equal to the set time, one or more of the electric heating block, the electric heating rod and the electric heating tube are controlled to preheat the mixed liquid flowing through the position thereof, including: Sampling and testing the urea-formaldehyde pre-shrinkage liquid prepared by mixing the formaldehyde solution and the urea solution; When the urea-formaldehyde pre-shrinkage liquid is tested to be qualified, the discharge pipe is controlled to discharge the prepared urea-formaldehyde pre-shrinkage liquid; When the urea-formaldehyde pre-shrinkage liquid fails the test, the auxiliary agent adding structure is controlled to add the reaction auxiliary agent into the stirring container.

10. A device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde, comprising a processor (800) and a memory (801) storing program instructions, characterized in that: The processor (800) is configured to execute the control method of the device for preparing urea-formaldehyde pre-shrinkage liquid from formaldehyde according to any one of claims 8 to 9 when running the program instructions.

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