Modified urea-formaldehyde resin adhesive production device

Abstract

The utility model discloses a modified urea-formaldehyde resin adhesive production device, and belongs to the field of resin adhesive production. A modified urea-formaldehyde resin adhesive production device comprises a barrel, a rotating shaft is rotationally connected into the barrel, a spiral plate is fixedly connected to the rotating shaft and is in a wing shape, a protruding edge is fixedly connected to the upper plate face of the spiral plate, an intercepting plate is fixedly connected to the lower plate face of the spiral plate, and the protruding edge, the intercepting plate and the spiral plate are integrally formed; raw materials in the barrel body can be driven by the spiral plate to ascend and then flow into the cavity, and the raw materials in the cavity enter the inner barrel body through the gaps formed between the connecting plates, so that the effect of circular flowing is achieved, the raw materials in the barrel body are prevented from sinking to the bottom, and the service life of the raw materials is prolonged. Further, the reaction rate among the raw materials of the modified urea-formaldehyde resin adhesive is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of resin adhesive production, in particular to a modified urea-formaldehyde resin adhesive production device. Background Art

[0002] Urea-formaldehyde resin is also called urea-formaldehyde resin. Urea and formaldehyde are condensed into an initial urea-formaldehyde resin under the action of a catalyst, and then an insoluble and infusible final thermosetting resin is formed under the action of a curing agent or an auxiliary agent. The color of the cured urea-formaldehyde resin is lighter than that of the phenolic resin and is translucent. It is the most widely used type of adhesive, especially in the manufacture of various artificial boards in the wood processing industry. Urea-formaldehyde resin can significantly improve its performance after adding a modifier according to different usage requirements. Urea-formaldehyde resin is low in cost and more environmentally friendly. After being gelled, the smell of formaldehyde is almost non-existent.

[0003] After searching, the Chinese patent publication number CN214438987U discloses a modified urea-formaldehyde resin adhesive production device, including a reactor, the top of the reactor is provided with two feeding pipes connected to the interior thereof, a fixed frame, the fixed frame is provided with two, a feeding hopper, the top of each feeding hopper is provided with two feeding pipes connected to the interior thereof, a weighing assembly, the weighing assemblies are provided with two, a mixing assembly, a discharge pipe, the discharge pipe is provided with a solenoid valve, a sampling assembly, the two weighing assemblies are respectively installed in the two feeding hoppers, the mixing assembly is installed in the reactor, the discharge pipe is arranged at the bottom of the reactor, the discharge pipe is connected to the interior of the reactor, and the sampling assembly is installed on the side wall of the reactor.

[0004] In the above scheme, the modified urea-formaldehyde resin reaction solution is mainly mixed, but the modified urea-formaldehyde resin reaction solution is a highly viscous liquid. Due to gravity, part of the solution is easy to sink to the bottom of the reactor, reducing the reaction rate. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that the modified urea-formaldehyde resin reaction solution is a highly viscous liquid, and due to gravity, part of the solution is easy to sink to the bottom of the reactor, thereby reducing the reaction rate, and a modified urea-formaldehyde resin adhesive production device is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A modified urea-formaldehyde resin adhesive production device comprises a cylinder, a rotating shaft is rotatably connected inside the cylinder, a spiral plate is fixedly connected to the rotating shaft, and the spiral plate is in the shape of an airfoil, a convex ridge is fixedly connected to the upper plate surface of the spiral plate, and an intercepting plate is fixedly connected to the lower plate surface of the spiral plate, and the convex ridge, the intercepting plate and the spiral plate are integrally formed.

[0008] In order to facilitate the guidance of the liquid on the upper surface of the spiral plate, preferably, the convex ridge is in a pointed cone shape, and the tip of the convex ridge protrudes from the upper surface of the spiral plate.

[0009] In order to facilitate stirring of the liquid on the lower surface of the spiral plate, preferably, the intercepting plate is in a plate-like style, and the intercepting surface of the intercepting plate protrudes from the lower surface of the spiral plate.

[0010] In order to facilitate the circulation of the liquid, further, the inner bottom of the cylinder is fixedly connected to the inner cylinder through multiple sets of connecting plates, and the axis of the rotating shaft coincides with the axis of the inner cylinder, a cavity is formed between the outer wall of the inner cylinder and the inner wall of the cylinder, and gaps are formed between the multiple sets of connecting plates.

[0011] In order to facilitate stirring of the liquid, preferably, a connecting rod is rotatably connected in the cavity, and a stirring rod is fixedly connected to the connecting rod.

[0012] In order to facilitate driving the connecting rod to rotate, preferably, the top end of the rotating shaft extends to the outside and is fixedly connected to a main gear, and an auxiliary gear is fixedly connected to the connecting rod, and the main gear is meshed with the auxiliary gear.

[0013] Compared with the prior art, the utility model provides a modified urea-formaldehyde resin adhesive production device, which has the following beneficial effects:

[0014] 1. The modified urea-formaldehyde resin adhesive production device drives the raw materials in the cylinder to rise through the spiral plate, and at this time the shifting plate shifts the excess raw materials into the cavity, and the raw materials in the cavity pass through the gaps formed between the connecting plates and enter the inner cylinder, thereby achieving a circulating flow effect, preventing the raw materials in the cylinder from sinking to the bottom, and thereby increasing the reaction rate between the raw materials of the modified urea-formaldehyde resin adhesive;

[0015] 2. The modified urea-formaldehyde resin adhesive production device, when the shaft rotates, whether counterclockwise or clockwise, it will drive the connecting rod to rotate synchronously, and the connecting rod will drive the stirring rod on the connecting rod to stir the raw materials in the cavity in real time, to prevent local unevenness in the raw materials in the cavity and maintain the uniformity of the reaction.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The utility model can use the spiral plate to drive the raw materials in the cylinder to rise and then flow into the cavity, and the raw materials in the cavity will pass through the gap formed between the connecting plates and then enter the inner cylinder, thereby achieving a circulating flow effect, preventing the raw materials in the cylinder from sinking to the bottom, and thereby increasing the reaction rate between the modified urea-formaldehyde resin adhesive raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1This is a schematic diagram of a cylinder of a modified urea-formaldehyde resin adhesive production device proposed in the utility model;

[0018] Figure 2 This is a partial structural schematic diagram of a modified urea-formaldehyde resin adhesive production device proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a spiral plate of a modified urea-formaldehyde resin adhesive production device proposed by the utility model;

[0020] Figure 4 A modified urea-formaldehyde resin adhesive production device proposed by the utility model Figure 3 Schematic diagram of the structure of part A.

[0021] In the figure: 1, cylinder; 2, inner cylinder; 201, connecting plate; 3, rotating shaft; 301, main gear; 4, spiral plate; 401, convex ridge; 402, intercepting plate; 5, connecting rod; 501, stirring rod; 502, auxiliary gear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Example:

[0025] Reference Figure 1-Figure 4A modified urea-formaldehyde resin adhesive production device includes a barrel 1, and a heating tube and a temperature controller can be arranged in the barrel 1. A feed pipe and a discharge pipe are arranged on the barrel 1 for conveying raw materials into the barrel 1, and valves are arranged on the feed pipe and the discharge pipe. The raw materials of the modified urea-formaldehyde resin adhesive mainly include 300 parts of formaldehyde, 158 parts of urea, 90 parts of melamine, 10 parts of polyvinyl alcohol, and 20 parts of ammonia water. Add formaldehyde once, melamine twice, and urea four times, and react in weak alkaline, weak acidic, and weak alkaline media in turn; add polyvinyl alcohol and ammonia water to the formaldehyde solution, and adjust the pH value of the solution to 8.0-8.5; add the first batch of melamine and the first batch of urea to the solution in the previous step, raise the temperature of the solution to 85-90°C, keep warm for 40 minutes, and then adjust the pH value of the solution to 6.8-7.5; add formic acid to the solution in the previous step, adjust the pH value of the solution to 4.8-5.6, control the temperature to 90-98°C, and react until the viscosity of the coating-4 cup is measured by thermal measurement for 13-15 seconds; The pH value of the solution in the previous step is adjusted to 9.0-9.5, and then the second batch of urea and the second batch of melamine are added, the temperature is controlled to 90-95°C, and the reaction is carried out until the viscosity of the coating-4 cup is measured by thermal measurement for 14-15 seconds; the pH value of the solution in the previous step is adjusted to 8.0-9.0, and the third batch of urea is added, and the temperature is maintained at 85-90°C for 15-25 minutes; the temperature of the solution in the previous step is cooled to 75-60°C, and the fourth batch of urea is added, and the temperature of the solution is cooled to 40-45°C, and the pH value of the solution is adjusted to 8.5-9.0 before discharging, and then the above raw materials are mixed and added to the inside of the cylinder 1 for reaction.

[0026] A rotating shaft 3 is rotatably connected inside the cylinder 1, and the rotating shaft 3 can be driven to rotate counterclockwise or clockwise by an external hydraulic motor or a rotating hydraulic cylinder. A spiral plate 4 in the shape of a wing is also fixedly connected to the rotating shaft 3, and a ridge 401 is fixedly connected to the upper plate surface of the spiral plate 4, and the ridge 401 is in a pointed cone style, and the tip of the ridge 401 protrudes from the upper plate surface of the spiral plate 4; an intercepting plate 402 is fixedly connected to the lower plate surface of the spiral plate 4, and the intercepting plate 402 is in a plate-shaped style, and the intercepting surface of the intercepting plate 402 protrudes from the lower plate surface of the spiral plate 4, and the ridge 401, the intercepting plate 402 and the spiral plate 4 are integrally formed.

[0027] Moreover, the inner cylinder 2 is fixedly connected to the inner bottom of the cylinder 1 through multiple sets of connecting plates 201, a cavity is formed between the outer wall of the inner cylinder 2 and the inner wall of the cylinder 1, and the axis of the rotating shaft 3 coincides with the axis of the inner cylinder 2, and gaps are formed between the multiple sets of connecting plates 201.

[0028] Here, when the raw material enters into the cylinder 1, the raw material fills the cavity between the inner cylinder 2 and the cylinder 1, and then drives the rotating shaft 3 to rotate clockwise through an external hydraulic motor or a rotating hydraulic cylinder. At this time, the wing-shaped spiral plate 4 will rotate clockwise, and the tip of the ridge 401 on the upper surface of the spiral plate 4 will guide the raw material during the rotation of the spiral plate 4, thereby increasing the resistance between the raw material and the upper surface of the spiral plate 4. At the same time, grooves are formed between the ridges 401. When the spiral plate 4 rotates clockwise, the raw material in the groove and the upper surface of the spiral plate 4 will be driven to rotate and rise.

[0029] At this time, the raw material will rotate upward from the bottom of the inner cylinder 2, and a toggle plate is fixedly connected to the rotating shaft 3, and the height of the toggle plate is higher than the height of the inner cylinder 2. When the spiral plate 4 drives the raw material to rise, the toggle plate will toggle the excess raw material into the cavity, and the raw material in the cavity will pass through the gap formed between the connecting plates 201 and then enter the inner cylinder 2, thereby achieving a circulating flow effect, preventing the raw material in the cylinder 1 from sinking to the bottom, and thereby increasing the reaction rate between the modified urea-formaldehyde resin adhesive raw materials.

[0030] After a period of time, the time can be determined according to the degree of mixing of the raw materials. The rotating shaft 3 is rotated counterclockwise. At this time, the spiral plate 4 will drive the intercepting plate 402 to rotate in the opposite direction to stir the raw materials in the inner tube 2. At this time, the intercepting surface of the intercepting plate 402 will rotate and collide with the raw materials to fully mix the internal raw materials.

[0031] Embodiment 2:

[0032] Reference Figure 2-Figure 3 In order to better mix the raw materials, a placement plate is fixedly connected in the cavity, a connecting rod 5 is rotatably connected to the placement plate, a stirring rod 501 is fixedly connected to the connecting rod 5, and a main gear 301 is fixedly connected to the outside at the top of the rotating shaft 3, and an auxiliary gear 502 is fixedly connected to the connecting rod 5, and the main gear 301 is meshed with the auxiliary gear 502.

[0033] When the rotating shaft 3 rotates, whether counterclockwise or clockwise, it will drive the connecting rod 5 to rotate synchronously, and the connecting rod 5 will drive the stirring rod 501 to stir the raw materials in the cavity in real time to prevent local unevenness in the raw materials in the cavity and maintain the uniformity of the reaction.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A modified urea-formaldehyde resin adhesive production device, comprising a cylinder (1), characterized in that: A rotating shaft (3) is rotatably connected inside the cylinder (1), a spiral plate (4) is fixedly connected to the rotating shaft (3), and the spiral plate (4) is in the shape of an airfoil, a convex ridge (401) is fixedly connected to the upper plate surface of the spiral plate (4), and an intercepting plate (402) is fixedly connected to the lower plate surface of the spiral plate (4), and the convex ridge (401), the intercepting plate (402) and the spiral plate (4) are integrally formed.

2. A modified urea-formaldehyde resin adhesive production device according to claim 1, characterized in that: The convex ridge (401) is in the form of a pointed cone, and the tip of the convex ridge (401) protrudes from the upper plate surface of the spiral plate (4).

3. The modified urea-formaldehyde resin adhesive production device according to claim 1, characterized in that: The interception plate (402) is in a plate-like shape, and the interception surface of the interception plate (402) protrudes from the lower plate surface of the spiral plate (4).

4. The modified urea-formaldehyde resin adhesive production device according to claim 1, characterized in that: The inner bottom of the cylinder (1) is fixedly connected to the inner cylinder (2) via a plurality of sets of connecting plates (201), the axis of the rotating shaft (3) coincides with the axis of the inner cylinder (2), a cavity is formed between the outer wall of the inner cylinder (2) and the inner wall of the cylinder (1), and gaps are formed between the plurality of sets of connecting plates (201).

5. The modified urea-formaldehyde resin adhesive production device according to claim 4, characterized in that: A connecting rod (5) is rotatably connected in the cavity, and a stirring rod (501) is fixedly connected to the connecting rod (5).

6. The modified urea-formaldehyde resin adhesive production device according to claim 5, characterized in that: The top end of the rotating shaft (3) extends to the outside and is fixedly connected to a main gear (301), and the connecting rod (5) is fixedly connected to an auxiliary gear (502), and the main gear (301) is meshed with the auxiliary gear (502).

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