Phenolic resin for heavy bamboo flooring and preparation method and device thereof

Abstract

The present application relates to phenolic resin preparation technical field, specifically to a kind of phenolic resin for heavy bamboo floor and its preparation method, device, preparation method is as follows: first, phenol is extracted to the inside of reaction kettle;Stirring is opened, then cooling water is cooled to reaction kettle, then slowly add composite alkaline catalyst;Then, formaldehyde is constantly added to the inside of reaction kettle;Steam valve is opened, steam is heated, while condensate is passed, and temperature is kept for 30~50min;Immediately after viscosity reaches the requirement, cooling water is added to reduce temperature, until temperature is reduced to 40~45 DEG C after it can be discharged;Preparation device includes first feeding structure, mixed production structure, second feeding structure, steam conduit, guide pipe, connecting conduit and pressure relief valve;Phenolic resin prepared by the present application has excellent high-temperature resistance, high bonding strength, can resist decomposition of chemical substances, after coating heavy bamboo floor, not only can improve its strength and water resistance, but also can greatly reduce harmful gas emission of heavy bamboo floor, and effectively improve the color of heavy bamboo floor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of phenolic resin preparation, in particular to a phenolic resin for heavy bamboo flooring and a preparation method and device thereof. BACKGROUND

[0002] Heavy bamboo flooring, commonly known as bamboo silk board, is a kind of bamboo flooring. It is further improved on the basis of general bamboo flooring, making it more beautiful and practical. The material selection of this kind of bamboo flooring is more precise than that of general bamboo flooring. It generally selects high-quality bamboo (or other bamboo species with similar material properties) with a local bamboo age of more than four years as the material, and is produced through a series of strict process procedures such as selection, cooking, drying, and hot pressing.

[0003] According to Chinese Patent No. CN201510329273.5, a heavy bamboo flooring press device is mainly disclosed. The press device is arranged above the heavy bamboo flooring to be processed. A first pressing plate is arranged above the heavy bamboo flooring. A second pressing plate is arranged above the first pressing plate. The second pressing plate is provided with two or more protrusions at the bottom. The lowest end of the protrusions extends out of the bottom of the first pressing plate. The first pressing plate is provided with a through hole for the protrusions to move up and down. A return spring is arranged between the first pressing plate and the second pressing plate. The top of the first pressing plate is provided with a first driving device. The top of the second pressing plate is provided with a second driving device. However, this patent cannot achieve rapid cooling, and needs to be improved.

[0004] However, the existing heavy bamboo flooring phenolic resin preparation device still has some shortcomings in use. It cannot achieve rapid cooling, which is not conducive to the control of the production temperature of the phenolic resin. Therefore, a rose solid beverage preparation device is needed to solve the above problems. SUMMARY

[0005] The present application aims to provide a heavy bamboo flooring phenolic resin and a preparation method and device thereof to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] A heavy bamboo flooring phenolic resin preparation device, comprising a first feeding structure, a mixing production structure, a second feeding structure, a steam conduit, a guide pipe, a connecting conduit, and a pressure relief valve. The right side of the first feeding structure is in communication with the mixing production structure. The left side of the second feeding structure is in communication with the mixing production structure.

[0008] The upper end of the rear side of the mixing production structure is in communication with the steam conduit. The upper end of the front side of the mixing production structure is in communication with the guide pipe. The upper end of the guide pipe is in communication with the connecting conduit. The top of the connecting conduit is provided with the pressure relief valve.

[0009] The mixed production structure comprises a mixed production component and a cooling reaction component, and the mixed production component is connected with the cooling reaction component by welding;

[0010] The cooling reaction component comprises a sealed cover, a fitted metal net, a protective cylinder, a water pump, a communication seat and a reaction kettle, the lower end of the sealed cover is fixedly connected with the protective cylinder, the center of the protective cylinder is provided with the fitted metal net, the fitted metal net is arranged in fit with the reaction kettle, and the upper end of the reaction kettle is in communication with the sealed cover;

[0011] The first feeding structure comprises a first conduit, a second conduit, a third conduit and a flow controller, the upper end of the third conduit is in communication with the second conduit, the upper end of the second conduit is in communication with the first conduit, and the lower end of the first conduit is in communication with the flow controller;

[0012] The first feeding structure further comprises a vacuum pump, a connecting disc, a supporting plate and a foot support, the front end of the vacuum pump is provided with the connecting disc, the lower end of the vacuum pump is supported by the limiting supporting of the supporting plate, and the lower end of the supporting plate is fixedly connected with the foot support;

[0013] The mixed production component comprises a motor, a matching frame, an output rod and a first inclined rod, and the center of the motor is through arranged with the matching frame through the output rod;

[0014] The lower end of the output rod is fixedly connected with a first matching connecting rod, the side end of the reaction kettle is fixedly connected with a first mixed connecting rod, the upper end of the first mixed connecting rod is fixedly connected with the first inclined rod, the lower end of the first matching connecting rod is fixedly connected with a second matching connecting rod, the side end of the second matching connecting rod is fixedly connected with a second mixed connecting rod, and the upper end of the second mixed connecting rod is fixedly connected with a second inclined rod.

[0015] Specifically, the upper end of the protective cylinder is in communication with the water pump, and the lower end of the water pump is in communication with the bottom end of the protective cylinder through the communication seat.

[0016] Specifically, the first inclined rod, the first mixed connecting rod, the first matching connecting rod, the second inclined rod, the second mixed connecting rod and the second matching connecting rod are rotationally connected in the center of the sealed cover and the reaction kettle, and the sealed cover is in communication with the steam conduit and the drainage pipe.

[0017] Specifically, the vacuum pump is in communication with the side of the sealed cover through the flow controller, the first conduit, the second conduit and the third conduit.

[0018] Specifically, the first feeding structure and the second feeding structure are symmetrically arranged about the mixed production structure.

[0019] Specific, the first inclined rod and the first mixed connecting rod are arranged in an inclined structure, and the second inclined rod and the second mixed connecting rod are arranged in an inclined structure.

[0020] Specifically, the water pump and the communication seat form a circulating water path between the protection cylinder and the reaction kettle.

[0021] Specifically, a temperature display meter is mounted on the right side of the sealing shell.

[0022] A preparation method of a phenolic resin for heavy bamboo flooring comprises the following steps:

[0023] a. First, phenol is extracted into the reaction kettle through the first feeding structure;

[0024] b. Turn on the stirring, then cool the reaction kettle with cooling water, and then slowly add the composite alkaline catalyst at a temperature of 55-60 DEG C, and the stirring duration is 60-90 min;

[0025] c. Then, formaldehyde is continuously added into the reaction kettle through the second feeding structure, and the temperature is still kept at 55-60 DEG C, the feeding time is 40-60 min, and after the formaldehyde is added, the stirring is continued for 5-10 min;

[0026] d. Open the steam valve, heat up while passing the condensate water, control within 20 min to 95-100 DEG C, and keep the temperature for 30-50 min;

[0027] e. After the viscosity reaches the requirement, immediately cool down with cooling water until the temperature is reduced to 40-45 DEG C, then discharge, and finally the phenolic resin for heavy bamboo flooring is prepared.

[0028] Specifically, the raw materials of the phenolic resin comprise, by weight: 900-1000 parts of phenol, 1650-1850 parts of 37% formaldehyde aqueous solution and 60-70 parts of composite alkaline catalyst, wherein the composite alkaline catalyst is mixed by strong alkali catalyst and weak alkali catalyst according to a mass ratio of (10-15):1, the strong alkali catalyst is sodium hydroxide or potassium hydroxide, and the weak alkali catalyst is barium hydroxide or calcium hydroxide.

[0029] Compared with the prior art, the present application has the following advantages:

[0030] First, the first feeding structure and the second feeding structure are arranged, the phenol and the formaldehyde can be conducted, the high-efficiency material injection work is carried out, the vacuum pump is connected with the pipe body outside through the connecting disc, the phenol and the formaldehyde are conducted to the third conduit position through the flow controller, the first conduit and the second conduit by the work of the vacuum pump, then are transmitted to the inside of the mixed production structure through the third conduit, the high-efficiency material guiding work is carried out, and the phenol and the formaldehyde can be sealed and transmitted more quickly.

[0031] Secondly, the application mixes production structure by mixing production component and cooling reaction component, wherein the motor inside the mixing production component can drive the output rod, the first inclined rod, the first mixing connecting rod, the first matching connecting rod, the second inclined rod, the second mixing connecting rod and the second matching connecting rod to rotate, so as to mix the solution in the mixing production structure, and the cooling reaction component is used for the reaction production of phenolic resin, and the phenolic resin is mixed in the sealed shell and the reaction kettle, and the outside of the reaction kettle is quickly cooled by the setting of the attached metal net, the protective cylinder, the water pump and the communication seat, so that the condensed water can quickly circulate between the protective cylinder and the reaction kettle, and the outside of the reaction kettle is cooled.

[0032] Thirdly, the prepared phenolic resin has excellent high-temperature resistance, high bonding strength, can resist decomposition of chemical substances, can improve the strength and water resistance of heavy bamboo floor after coating, can greatly reduce the harmful gas emission amount of heavy bamboo floor, and can effectively improve the color of heavy bamboo floor. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 It is a front perspective view of the main body of the application;

[0035] Figure 2 It is a left side perspective view of the main body of the application;

[0036] Figure 3 It is a split view of the main body of the application;

[0037] Figure 4 It is a front perspective view of the first feeding structure of the application;

[0038] Figure 5 It is a left side perspective view of the first feeding structure of the application;

[0039] Figure 6 It is a front perspective view of the mixing production structure of the application;

[0040] Figure 7 It is a split view of the mixing production structure of the application;

[0041] Figure 8 Fig. 1 is a front perspective view of a mixing production component of the present application;

[0042] Figure 9 Fig. 2 is an exploded view of a cooling reaction component of the present application;

[0043] Figure 10 Fig. 3 is a front perspective view of a second embodiment of the main body of the present application.

[0044] In the figure: 1 - first feeding structure, 2 - mixing production structure, 3 - second feeding structure, 4 - steam conduit, 5 - discharge conduit, 6 - connecting conduit, 7 - pressure relief valve, 8 - first conduit, 9 - second conduit, 10 - third conduit, 11 - flow controller, 12 - vacuum pump, 13 - connecting disc, 14 - support plate, 15 - foot stand, 16 - mixing production component, 17 - cooling reaction component, 18 - motor, 19 - fitting frame, 20 - output rod, 21 - first inclined rod, 22 - first mixing connecting rod, 23 - first fitting connecting rod, 24 - second inclined rod, 25 - second mixing connecting rod, 26 - second fitting connecting rod, 27 - sealing shell, 28 - attached metal mesh, 29 - protective cylinder, 30 - water pump, 31 - communication seat, 32 - reaction kettle, 33 - temperature display meter. DETAILED DESCRIPTION

[0045] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person of ordinary skill in the art without making creative labor should belong to the scope of protection of the present application.

[0046] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0047] The present application will be further described below in combination with the drawings.

[0048] Example 1

[0049] A preparation method of a phenolic resin for heavy bamboo flooring, comprising the following steps:

[0050] a. First, phenol is extracted into the reaction kettle through a first feeding structure;

[0051] b. Stirring is started, and the reaction kettle is cooled by cooling water. Then, a composite alkaline catalyst is slowly added at a temperature of 55 DEG C, and the stirring duration is 60 min;

[0052] c. Then, formaldehyde is continuously added into the reaction kettle through a second feeding structure, and the temperature is still kept at 55 DEG C. The feeding time is 40 min, and 5 min of stirring is performed after the formaldehyde is added completely;

[0053] d. The steam valve is opened, steam is passed to increase the temperature, and cooling water is passed at the same time. The temperature is controlled to reach 95 DEG C within 20 min, and the temperature is kept for 30 min;

[0054] e. After the viscosity reaches the requirement, cooling water is immediately added to reduce the temperature. When the temperature is reduced to 40 DEG C, the product can be discharged, and the phenolic resin for heavy bamboo flooring is finally prepared.

[0055] The raw materials of the phenolic resin comprise phenol 900 parts, 37% formaldehyde aqueous solution 1650 parts and composite alkaline catalyst 62 parts in terms of weight parts. The purity of the phenol is above 98% industrial product. The composite alkaline catalyst is obtained by mixing a strong alkaline catalyst and a weak alkaline catalyst at a mass ratio of 12:1. The strong alkaline catalyst is sodium hydroxide, and the weak alkaline catalyst is calcium hydroxide.

[0056] Example 2

[0057] A preparation method of a phenolic resin for heavy bamboo flooring, comprising the following steps:

[0058] a. First, phenol is extracted into the reaction kettle through a first feeding structure;

[0059] b. Stirring is started, and the reaction kettle is cooled by cooling water. Then, a composite alkaline catalyst is slowly added at a temperature of 58 DEG C, and the stirring duration is 70 min;

[0060] c. Then, formaldehyde is continuously added into the reaction kettle through a second feeding structure, and the temperature is still kept at 58 DEG C. The feeding time is 50 min, and 7 min of stirring is performed after the formaldehyde is added completely;

[0061] d. The steam valve is opened, steam is passed to increase the temperature, and cooling water is passed at the same time. The temperature is controlled to reach 98 DEG C within 20 min, and the temperature is kept for 40 min;

[0062] e. After the viscosity reaches the requirement, cooling water is immediately added to reduce the temperature. When the temperature is reduced to 42 DEG C, the product can be discharged, and the phenolic resin for heavy bamboo flooring is finally prepared.

[0063] The raw materials for phenolic resin, by weight, include: 950 parts phenol, 1720 parts 37% formaldehyde aqueous solution, and 67 parts composite alkaline catalyst. The phenol has a purity of over 98% for industrial use. The composite alkaline catalyst is a mixture of a strong alkaline catalyst and a weak alkaline catalyst in a mass ratio of 10:1. The strong alkaline catalyst is potassium hydroxide, and the weak alkaline catalyst is barium hydroxide.

[0064] Example 3

[0065] A method for preparing phenolic resin for reconstituted bamboo flooring includes the following steps:

[0066] a. First, phenol is extracted into the reactor through the first feeding structure;

[0067] b. Start stirring, then cool the reactor with cooling water, and then slowly add the composite alkaline catalyst at 60°C for 90 min.

[0068] c. Then, formaldehyde is continuously added into the reactor through the second feeding structure, while the temperature is maintained at 60℃. The feeding time is 60 min, and the mixture is stirred for another 10 min after the formaldehyde is added.

[0069] d. Open the steam valve to allow steam to rise and simultaneously introduce condensate water, maintaining the temperature at 100°C within 20 minutes and holding for 50 minutes.

[0070] e. Once the viscosity reaches the required level, immediately add cooling water to lower the temperature until it drops to 45°C. Then the material can be discharged, and the phenolic resin for bamboo flooring will be obtained.

[0071] The raw materials for phenolic resin include, by weight, 1000 parts of phenol, 1800 parts of 37% formaldehyde aqueous solution, and 70 parts of composite alkaline catalyst. The phenol has a purity of over 98% for industrial use. The composite alkaline catalyst is a mixture of a strong alkaline catalyst and a weak alkaline catalyst in a mass ratio of 15:1. The strong alkaline catalyst is sodium hydroxide, and the weak alkaline catalyst is barium hydroxide.

[0072] Based on Examples 1-3, it can be concluded that the phenolic resin prepared by the present invention has excellent high-temperature resistance, high bonding strength, and can resist the decomposition of chemical substances. After being coated on bamboo flooring, it can not only improve its strength and water resistance, but also greatly reduce the release of harmful gases from bamboo flooring and effectively improve the color of bamboo flooring. The preparation method of phenolic resin has low raw material cost, is easy to operate, has a short reaction cycle, and is suitable for industrial production.

[0073] Example 4

[0074] Please see Figure 1 , Figure 2 ,Figure 3 The application provides a preparation device for phenolic resin for heavy bamboo floor, which comprises a first feeding structure 1, a mixing production structure 2, a second feeding structure 3, a steam guide pipe 4, a guide pipe 5, a connecting guide pipe 6 and a pressure relief valve 7, the right side of the first feeding structure 1 is connected with the mixing production structure 2, the left side of the second feeding structure 3 is connected with the mixing production structure 2, the first feeding structure 1, the mixing production structure 2 and the second feeding structure 3 are connected as a whole, the mixing production of the phenolic resin can be carried out, the first feeding structure 1 and the second feeding structure 3 are symmetrically arranged relative to the mixing production structure 2, and the production solution can be conducted.

[0075] The upper end of the mixing production structure 2 is connected with the steam guide pipe 4 at the rear side, the upper end of the mixing production structure 2 is connected with the guide pipe 5 at the front side, the upper end of the guide pipe 5 is connected with the connecting guide pipe 6, the top of the connecting guide pipe 6 is provided with the pressure relief valve 7, the steam guide pipe 4 can inject steam, the steam can be efficiently introduced through the connection with the external steam pipe, the temperature in the mixing production structure 2 is increased, the pressure relief valve 7 can release pressure through control, and the pressure is transmitted through the guide pipe 5 and the connecting guide pipe 6.

[0076] Please refer to Figure 6 , Figure 7 , Figure 9 The mixing production structure 2 comprises a mixing production component 16 and a cooling reaction component 17, the mixing production component 16 is welded and connected in position with the cooling reaction component 17, the cooling reaction component 17 comprises a sealing cover 27, a fitted metal mesh 28, a protection cylinder 29, a water pump 30, a connecting seat 31 and a reaction kettle 32, the lower end of the sealing cover 27 is fixedly connected with the protection cylinder 29, the center of the protection cylinder 29 is provided with the fitted metal mesh 28, the fitted metal mesh 28 is arranged in fit with the reaction kettle 32, the upper end of the reaction kettle 32 is connected with the sealing cover 27, the upper end of the protection cylinder 29 is connected with the water pump 30, the lower end of the water pump 30 is connected with the bottom end of the protection cylinder 29 through the connecting seat 31, the sealing cover 27, the protection cylinder 29 and the reaction kettle 32 form a sealing system, the cooling work of the reaction kettle 32 can be carried out, and the condensate water is continuously circulated and cooled by the water pump 30.

[0077] Please refer to Figure 4 The first feeding structure 1 comprises a first guide pipe 8, a second guide pipe 9, a third guide pipe 10 and a flow controller 11, the upper end of the third guide pipe 10 is connected with the second guide pipe 9, the upper end of the second guide pipe 9 is connected with the first guide pipe 8, the lower end of the first guide pipe 8 is connected with the flow controller 11, the first guide pipe 8, the second guide pipe 9 and the third guide pipe 10 are connected, the solution is guided, and the flow controller 11 is arranged to control the flow.

[0078] Please refer to Figure 5The first feeding structure 1 further comprises a vacuum pump 12, a connecting disc 13, a supporting plate 14 and a supporting leg 15, the front end of the vacuum pump 12 is provided with the connecting disc 13, the lower end of the vacuum pump 12 is supported by the limiting supporting plate 14, the lower end of the supporting plate 14 is fixedly connected with the supporting leg 15, the vacuum pump 12 is connected with the outside through the connecting disc 13 to place the solution, and the supporting plate 14 and the supporting leg 15 are arranged to support the bottom of the vacuum pump 12.

[0079] Please refer to Figure 8 The mixed production component 16 comprises a motor 18, a matching frame 19, an output rod 20 and a first inclined rod 21, the center of the motor 18 is provided through the output rod 20 and the matching frame 19, the lower end of the output rod 20 is fixedly connected with a first matching connecting rod 23, the side end of the reaction kettle 32 is fixedly connected with a first mixed connecting rod 22, the upper end of the first mixed connecting rod 22 is fixedly connected with the first inclined rod 21, the lower end of the first matching connecting rod 23 is fixedly connected with a second matching connecting rod 26, the side end of the second matching connecting rod 26 is fixedly connected with a second mixed connecting rod 25, the upper end of the second mixed connecting rod 25 is fixedly connected with a second inclined rod 24, the mixed production component 16 is arranged in the center of the cooling reaction component 17 to perform mixing work, and the cooling reaction component 17 performs efficient cooling and mixing production work.

[0080] The first inclined rod 21, the first mixed connecting rod 22, the first matching connecting rod 23, the second inclined rod 24, the second mixed connecting rod 25 and the second matching connecting rod 26 are rotationally connected in the center of the sealing cover 27 and the reaction kettle 32, the sealing cover 27 is connected with the steam conduit 4 and the drainage pipe 5, the vacuum pump 12 is connected with the side of the sealing cover 27 through the flow controller 11, the first conduit 8, the second conduit 9 and the third conduit 10, the first feeding structure 1 and the second feeding structure 3 are symmetrically arranged relative to the mixed production structure 2, the first inclined rod 21 and the first mixed connecting rod 22 are arranged in a 45° inclined structure, the second inclined rod 24 and the second mixed connecting rod 25 are arranged in a 45° inclined structure, the water pump 30 and the connecting seat 31 form a circulating water path between the protection cylinder 29 and the reaction kettle 32, the motor 18 drives the first matching connecting rod 23 and the second matching connecting rod 26 to rotate through the output rod 20, so as to drive the first inclined rod 21, the first mixed connecting rod 22, the second inclined rod 24 and the second mixed connecting rod 25 to rotate, and the structure of the first inclined rod 21, the first mixed connecting rod 22, the second inclined rod 24 and the second mixed connecting rod 25 can improve the mixing efficiency.

[0081] In this embodiment, the user combines the first feeding structure 1, the mixing production structure 2, and the second feeding structure 3. Then, a steam conduit 4, a guide pipe 5, a connecting conduit 6, and a pressure relief valve 7 are installed on the mixing production structure 2. During production, the user first connects the connecting guide plate 13 to an external pipe. The feeding operation is initiated by controlling the vacuum pump 12. The vacuum pump 12 drives the solution to be guided to the flow controller 11, which monitors the flow rate. The solution then flows through the first conduit 8 to the second conduit 9, and then through the third conduit 10 into the interior of the mixing production structure 2. The first feeding structure 1 and the second feeding structure 3 are symmetrically arranged about the mixing production structure 2, allowing for the conduction of different solutions to reach the interior of the mixing production structure 2. A steam conduit 4 is installed on the upper side of the mixing production structure 2 to facilitate steam... The solution is introduced, and the guide pipe 5 and connecting pipe 6 are connected. The pressure inside the mixing production structure 2 can be regulated by the pressure relief valve 7. The solution is conducted to the interior of the cooling reaction component 17, which is located inside the sealed cover 27 and the reaction vessel 32. At this time, the motor 18 works, which can drive the output rod 20, the first cooperating connecting rod 23, and the second cooperating connecting rod 26 to rotate, thereby causing the first inclined rod 21, the first mixing connecting rod 22, the second inclined rod 24, and the second mixing connecting rod 25 to rotate, so that the solution is mixed inside the sealed cover 27 and the reaction vessel 32. At the same time, during the mixing production, the user can drive the water pump 30 to transfer the condensate for the heat absorption and cooling of the reaction vessel 32. The condensate is conducted by the water pump 30 to the space between the protective cylinder 29 and the reaction vessel 32. The metal mesh 28 is attached to the reaction vessel 32 for efficient heat conduction.

[0082] Example 5

[0083] Based on Example 4, such as Figure 10 As shown, a temperature display 33 is installed on the right side of the sealed cover 27.

[0084] In this embodiment, a temperature display meter 33 is installed on the side of the sealing cover 27 and is connected to the sealing cover 27. The sensing element inside the temperature display meter 33 is inserted into the reaction vessel 32 to measure the real-time temperature of the solution in the reaction vessel 32. The temperature display meter 33 performs digital display operation.

[0085] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preparing phenolic resin for reconstituted bamboo flooring, comprising a first feeding structure (1), a mixing and production structure (2), a second feeding structure (3), a steam conduit (4), a discharge pipe (5), a connecting pipe (6), and a pressure relief valve (7), characterized in that: The right side of the first feeding structure (1) is connected to the mixing production structure (2), and the left side of the second feeding structure (3) is connected to the mixing production structure (2). The upper rear side of the mixed production structure (2) is connected to the steam conduit (4), the upper front side of the mixed production structure (2) is connected to the guide pipe (5), the upper end of the guide pipe (5) is connected to the connecting pipe (6), and the top of the connecting pipe (6) is provided with the pressure relief valve (7). The hybrid production structure (2) includes a hybrid production component (16) and a cooling reaction component (17), wherein the hybrid production component (16) and the cooling reaction component (17) are welded and connected in a limiting manner; The cooling reaction component (17) includes a sealing cover (27), a metal mesh (28), a protective cylinder (29), a water pump (30), a connecting seat (31), and a reaction vessel (32). The lower end of the sealing cover (27) is fixedly connected to the protective cylinder (29). The center of the protective cylinder (29) is provided with the metal mesh (28), and the metal mesh (28) is attached to the reaction vessel (32). The upper end of the reaction vessel (32) is connected to the sealing cover (27). The first feeding structure (1) includes a first conduit (8), a second conduit (9), a third conduit (10) and a flow controller (11). The upper end of the third conduit (10) is connected to the second conduit (9), the upper end of the second conduit (9) is connected to the first conduit (8), and the lower end of the first conduit (8) is connected to the flow controller (11). The first feeding structure (1) also includes a vacuum pump (12), a connecting guide plate (13), a support plate (14) and a support frame (15). The front end of the vacuum pump (12) is provided with a connecting guide plate (13), and the lower end of the vacuum pump (12) is limited and supported by the support plate (14). The lower end of the support plate (14) is fixedly connected to the support frame (15). The hybrid production component (16) includes a motor (18), a mounting frame (19), an output rod (20), and a first inclined rod (21). The center of the motor (18) is connected to the mounting frame (19) through the output rod (20). The lower end of the output rod (20) is fixedly connected to a first mating connecting rod (23), the side end of the reactor (32) is fixedly connected to a first mixing connecting rod (22), the upper end of the first mixing connecting rod (22) is fixedly connected to a first inclined rod (21), the lower end of the first mating connecting rod (23) is fixedly connected to a second mating connecting rod (26), and the side end of the second mating connecting rod (26) is fixedly connected to a second mixing connecting rod (25), and the upper end of the second mixing connecting rod (25) is fixedly connected to a second inclined rod (24). The upper end of the protective cylinder (29) is connected to the water pump (30), and the lower end of the water pump (30) is connected to the bottom end of the protective cylinder (29) through the connecting seat (31). The first inclined rod (21), the first mixing rod (22), the first mating rod (23), the second inclined rod (24), the second mixing rod (25), and the second mating rod (26) are rotatably connected at the center of the sealing shell (27) and the reactor (32), and the sealing shell (27) is connected to the steam pipe (4) and the exhaust pipe (5); The vacuum pump (12) is connected to the side of the sealing housing (27) through the flow controller (11), the first conduit (8), the second conduit (9), and the third conduit (10); The first inclined rod (21) and the first hybrid connecting rod (22) are arranged at a 45° angle, and the second inclined rod (24) and the second hybrid connecting rod (25) are arranged at a 45° angle. The water pump (30) and the connecting seat (31) form a circulating water path between the protective cylinder (29) and the reaction vessel (32).

2. The apparatus for preparing phenolic resin for reconstituted bamboo flooring according to claim 1, characterized in that: The first feeding structure (1) and the second feeding structure (3) are symmetrically arranged about the mixed production structure (2).

3. The apparatus for preparing phenolic resin for reconstituted bamboo flooring according to claim 2, characterized in that: A temperature display (33) is installed on the right side of the sealing cover (27).

4. A method for preparing phenolic resin for reconstituted bamboo flooring, comprising the apparatus for preparing phenolic resin for reconstituted bamboo flooring according to any one of claims 1 to 3, characterized in that, Includes the following steps: a. First, phenol is extracted into the reactor through the first feed structure (1); b. Start stirring, then cool the reactor with cooling water, and then slowly add the composite alkaline catalyst at a temperature of 55-60°C for 60-90 minutes. c. Then formaldehyde is continuously added into the reactor through the second feeding structure (3), the temperature is maintained at 55-60℃, the feeding time is 40-60 minutes, and the formaldehyde is stirred for 5-10 minutes after it is added. d. Open the steam valve to allow steam to rise and simultaneously introduce condensate. Control the temperature to 95-100℃ within 20 minutes and maintain the temperature for 30-50 minutes. e. Once the viscosity reaches the required level, immediately add cooling water to lower the temperature until it drops to 40-45°C. Then, the material can be discharged, and the phenolic resin for bamboo flooring will be obtained.

5. The method for preparing phenolic resin for reconstituted bamboo flooring according to claim 4, characterized in that, The raw materials for the phenolic resin include, by weight, 900-1000 parts of phenol, 1650-1850 parts of 37% formaldehyde aqueous solution, and 60-70 parts of a composite alkaline catalyst. The composite alkaline catalyst is composed of a strong alkaline catalyst and a weak alkaline catalyst mixed in a mass ratio of (10-15):

1. The strong alkaline catalyst is sodium hydroxide or potassium hydroxide, and the weak alkaline catalyst is barium hydroxide or calcium hydroxide.

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