Urea formaldehyde resin storage tank with low formaldehyde emission structure

Abstract

The utility model discloses a kind of urea formaldehyde resin storage tanks with low aldehyde emission structure, it is related to urea formaldehyde resin storage technical field, including tank body and discharge mechanism, the top of tank body is fixedly connected with discharge mechanism, and discharge mechanism includes the ventilation pipeline fixedly connected in the position of tank body outer surface, the outer surface of ventilation pipeline is provided with ventilation valve, and the top of ventilation pipeline is fixedly connected with adsorption tower, the inside of adsorption tower is provided with activated carbon adsorption layer, and the top of activated carbon adsorption layer is fixedly connected with molecular sieve composite adsorption layer, ventilation pipeline is stainless steel material, strong corrosion resistance, its outer surface is connected ventilation valve through flange.The urea formaldehyde resin storage tank with low aldehyde emission structure compared with existing ordinary urea formaldehyde resin storage tank, prolongs pipeline life, stabilizes tank pressure, improves waste gas purification and environmental protection, reduces cost, and enhances coating adhesion, reduces corrosion rate, guarantees resin purity, reduces cleaning and leakage risk.

Description

Technical Field

[0001] This utility model relates to the field of urea-formaldehyde resin storage technology, specifically to a urea-formaldehyde resin storage tank with a low aldehyde emission structure. Background Technology

[0002] Urea-formaldehyde resin is a thermosetting resin produced by the condensation reaction of urea and formaldehyde in the presence of a catalyst (such as ammonia or sodium hydroxide). It features inexpensive raw materials, rapid curing, high bonding strength, and colorless transparency, making it widely used in wood processing, papermaking, coatings, and molding compounds. Urea-formaldehyde resin storage tanks are specialized containers designed specifically for storing this resin, aiming to ensure its stability during storage and prevent premature curing or deterioration. These tanks are typically made of polyethylene (PE), polypropylene (PP), or stainless steel; however, existing urea-formaldehyde resin storage tanks have certain shortcomings.

[0003] A resin storage tank, as described in application number CN202422368174.5, includes a tank body with a cover plate installed on the top. Several L-shaped support plates are evenly distributed around the bottom and side walls. Rollers and adjustable legs are staggered on the horizontal sides of the support plates. Anti-collision buffer blocks are installed on the outer sides of the vertical sides of the support plates. Several adjacent heating pipes are arranged from top to bottom inside the inner wall of the tank. The cover plate has an inverted U-shaped cross-section. A turntable is rotatably connected to the inner wall of the vertical side of the cover plate. A rotating shaft is installed at the center of the turntable. A motor driving the rotating shaft is installed on the top of the cover plate. The turntable has several through holes. A breather valve is installed on the top of the cover plate. Several stirring rods and heating rods are evenly distributed around the circumference of the turntable, arranged alternately. The stirring rods are of varying lengths and hollow inside, with a temperature sensor inside each stirring rod. The probe of the temperature sensor protrudes from the bottom of the stirring rod. This invention is easy to handle, provides uniform heating, and achieves good resin storage results. However, the pipes of the urea-formaldehyde resin storage tank are easily corroded, the venting can cause a sudden drop in pressure, the adsorption system has a short lifespan, the anti-corrosion coating is easy to peel off, the tank body corrodes quickly, the resin is easily contaminated, cleaning is frequent, and the tank body is prone to leakage.

[0004] Therefore, in view of this, we have studied and improved the existing structure to address its shortcomings, and proposed a urea-formaldehyde resin storage tank with a low aldehyde emission structure. Utility Model Content

[0005] The purpose of this invention is to provide a urea-formaldehyde resin storage tank with a low aldehyde emission structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a urea-formaldehyde resin storage tank with a low-formaldehyde emission structure, comprising a tank body and an emission mechanism. The emission mechanism is fixedly connected to the top of the tank body, and the emission mechanism includes a ventilation duct fixedly connected to the outer surface of the tank body. A ventilation valve is provided on the outer surface of the ventilation duct, and an adsorption tower is fixedly connected to the top of the ventilation duct. An activated carbon adsorption layer is provided inside the adsorption tower, and a molecular sieve composite adsorption layer is fixedly connected to the top of the activated carbon adsorption layer.

[0007] Preferably, the outer surface of the tank is fixedly connected to a feed inlet, and the inner wall of the tank is fixedly connected to an inner wall anti-corrosion reinforcement mechanism.

[0008] Preferably, the inner wall corrosion protection and strengthening mechanism includes a metal anti-corrosion mesh fixedly connected to the inner wall of the tank, and an anti-corrosion primer is fixedly connected to one side of the metal anti-corrosion mesh, and a ceramic anti-corrosion coating is fixedly connected to one side of the anti-corrosion primer.

[0009] Preferably, a drive motor is fixedly connected to the outer surface of the tank, and a drive rod is fixedly connected to the output end of the drive motor.

[0010] Preferably, the outer surface of the drive rod is fixedly connected to a connecting stirring paddle, and the outer surface of the tank is fixedly connected to a cleaning port.

[0011] Preferably, a cleaning pipe is provided inside the cleaning port, and a high-pressure cleaning pump is fixedly connected to one end of the cleaning pipe.

[0012] Preferably, one end of the high-pressure cleaning pump is provided with a cleaning tank, and a support frame is fixedly connected to the outer surface of the tank, and an outlet is provided at the bottom of the tank.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the emission mechanism, can withstand long-term scouring by corrosive gases such as formaldehyde inside the tank, extending the service life of the pipeline and avoiding a sudden drop in pressure inside the tank due to excessive exhaust. The fiberglass adsorption tower is anti-aging and maintains a long service life even under outdoor exposure, ensuring stable operation of the adsorption system. The multi-layer adsorption design of the activated carbon adsorption layer and the molecular sieve composite adsorption layer has a large adsorption capacity for formaldehyde and extends the saturation period. Through the coordinated control of the ventilation valve and the adsorption layer, the discharge rate can be automatically adjusted according to the formaldehyde concentration inside the tank, so that the formaldehyde content in the exhaust gas remains stable, meeting stringent environmental protection standards, while reducing the cost of frequent replacement of adsorption materials.

[0015] 2. This utility model improves the adhesion of the anti-corrosion coating by setting the internal anti-corrosion reinforcement mechanism, avoiding peeling of the coating due to resin impact. It forms electrochemical protection through sacrificial anode effect, reducing the corrosion rate of the tank substrate. The ceramic anti-corrosion coating adopts nano-modification technology to improve hardness and formaldehyde solution immersion performance, avoid blistering, and withstand long-term resin erosion, forming a dense protective system, avoiding contamination of urea-formaldehyde resin, improving resin purity, and reducing cleaning frequency, thereby reducing the risk of tank leakage due to corrosion. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the emission mechanism 2 of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal wall corrosion-resistant strengthening mechanism 4 of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the stirring paddle 7 of this utility model.

[0020] In the diagram: 1. Tank; 2. Discharge mechanism; 201. Ventilation duct; 202. Ventilation valve; 203. Adsorption tower; 204. Activated carbon adsorption layer; 205. Molecular sieve composite adsorption layer; 3. Feed inlet; 4. Inner wall anti-corrosion reinforcement mechanism; 401. Metal anti-corrosion mesh; 402. Anti-corrosion primer; 403. Ceramic anti-corrosion coating; 5. Drive motor; 6. Drive rod; 7. Agitator; 8. Cleaning port; 9. Cleaning pipe; 10. High-pressure cleaning pump; 11. Cleaning box; 12. Support frame; 13. Outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3As shown, a urea-formaldehyde resin storage tank with a low-formaldehyde emission structure includes a tank body 1 and an emission mechanism 2. The emission mechanism 2 is fixedly connected to the top of the tank body 1, and the emission mechanism 2 includes a ventilation duct 201 fixedly connected to the outer surface of the tank body 1. A ventilation valve 202 is provided on the outer surface of the ventilation duct 201, and an adsorption tower 203 is fixedly connected to the top of the ventilation duct 201. An activated carbon adsorption layer 204 is provided inside the adsorption tower 203, and a molecular sieve composite is fixedly connected to the top of the activated carbon adsorption layer 204. The adsorption layer 205 and ventilation duct 201 are made of stainless steel, which is highly corrosion resistant. Their outer surfaces are connected to the ventilation valve 202 via flanges. The ventilation valve 202 has a copper valve core inside, which is wear resistant. The adsorption tower 203 is made of fiberglass, which is anti-aging. The lower layer of the tower is filled with activated carbon adsorption layer 204 to adsorb small molecule organic matter, and molecular sieve composite adsorption layer 205 for deep purification by molecular sieves, which increases the adsorption capacity. The ventilation valve 202 controls the discharge volume, which greatly improves the waste gas purification rate, far exceeding the environmental emission limits and reducing air pollution.

[0023] like Figure 3 As shown, a feed inlet 3 is fixedly connected to the outer surface of the tank body 1, and an inner wall anti-corrosion reinforcement mechanism 4 is fixedly connected to the inner wall of the tank body 1. The inner wall anti-corrosion reinforcement mechanism 4 includes a metal anti-corrosion mesh 401 fixedly connected to the inner wall of the tank body 1, and an anti-corrosion primer 402 is fixedly connected to one side of the metal anti-corrosion mesh 401. A ceramic anti-corrosion coating 403 is fixedly connected to one side of the anti-corrosion primer 402. The feed inlet 3 is located on one side of the top of the tank body 1 and communicates with the inside of the tank. The metal anti-corrosion mesh 401 welded to the inner wall of the tank body 1 is made of stainless steel to enhance the integrity of the coating. The anti-corrosion primer 402 sprayed on its surface is an epoxy zinc-rich primer to isolate the substrate from the corrosive medium. The ceramic anti-corrosion coating 403 is resistant to acid and alkali corrosion. The three work together to extend the corrosion resistance life of the tank body 1.

[0024] Furthermore, a drive motor 5 is fixedly connected to the outer surface of the tank body 1, and a drive rod 6 is fixedly connected to the output end of the drive motor 5. A connecting agitator 7 is fixedly connected to the outer surface of the drive rod 6, and a cleaning port 8 is fixedly connected to the outer surface of the tank body 1. The output shaft of the drive motor 5 drives the drive rod 6, which horizontally penetrates the side wall of the tank body 1. The cleaning port 8 is equipped with a silicone sealing cap. The drive motor 5 drives the agitator 7 to rotate, forming an axial flow to improve the material mixing efficiency. The cleaning port 8 facilitates the periodic introduction of cleaning agent, which, together with the rotation of the agitator 7, flushes the tank wall and reduces residue.

[0025] Furthermore, a cleaning pipe 9 is installed inside the cleaning port 8, and a high-pressure cleaning pump 10 is fixedly connected to one end of the cleaning pipe 9. A cleaning tank 11 is installed at one end of the high-pressure cleaning pump 10, and a support frame 12 is fixedly connected to the outer surface of the tank body 1. An outlet 13 is opened at the bottom of the tank body 1. The cleaning pipe 9 is resistant to high pressure. The water inlet of the high-pressure cleaning pump 10 is connected to the cleaning tank 11. The outlet 13 is equipped with a butterfly valve. The high-pressure cleaning pump 10 pressurizes the cleaning agent in the cleaning tank 11 and sprays it out through the cleaning pipe 9 to powerfully flush the tank wall. The support frame 12 stabilizes the tank body 1, and the outlet 13 facilitates the discharge of cleaning waste liquid and finished products, ensuring safe and efficient operation.

[0026] Working Principle: When using the urea-formaldehyde resin storage tank with a low-formaldehyde emission structure, first check the condition of each component of the urea-formaldehyde resin storage tank: the tank body 1 is firmly supported by the support frame 12, the inlet 3 is closed, the valve of the outlet 13 is closed, the metal anti-corrosion mesh 401, the anti-corrosion primer 402, and the ceramic anti-corrosion coating 403 in the inner wall anti-corrosion reinforcement mechanism 4 are intact, the ventilation pipe 201 of the emission mechanism 2 is unobstructed, the ventilation valve 202 is closed, the activated carbon adsorption layer 204 and the molecular sieve composite adsorption layer 205 in the adsorption tower 203 are in a ready-to-use state, and the cleaning pipe 9 connected to the cleaning port 8, the high-pressure cleaning pump 10, and the cleaning box 11 are connected normally. Then, inject urea-formaldehyde resin through the inlet 3, close the inlet 3, and turn on the drive motor 5. The drive rod 6 drives the stirring paddle 7 to rotate slowly to prevent... Resin settles, and simultaneously, ventilation valve 202 is opened. A small amount of formaldehyde volatilized in the tank enters adsorption tower 203 through ventilation pipe 201. After being purified by activated carbon adsorption layer 204 and molecular sieve composite adsorption layer 205, it is discharged. When resin needs to be taken out, drive motor 5 is turned off, outlet valve 13 is opened, and resin is discharged through outlet 13. Finally, after use, outlet valve 13 is closed, high-pressure cleaning pump 10 is started, and cleaning agent in cleaning tank 11 is sprayed into tank 1 through cleaning pipe 9 from cleaning port 8. The inner wall is rinsed by rotating agitator 7, and cleaning waste liquid is discharged from outlet 13. All equipment is turned off, and the condition of adsorption layer in adsorption tower 203 is checked to ensure that the inner wall anti-corrosion reinforcement mechanism 4 is intact, in preparation for the next use. This is the working principle of the urea-formaldehyde resin storage tank with low formaldehyde emission structure.

Claims

1. A urea-formaldehyde resin storage tank with a low-formaldehyde emission structure, comprising a tank body (1) and an emission mechanism (2), characterized in that, The top of the tank (1) is fixedly connected to a discharge mechanism (2), and the discharge mechanism (2) includes a ventilation duct (201) fixedly connected to the outer surface of the tank (1). The outer surface of the ventilation duct (201) is provided with a ventilation valve (202), and the top of the ventilation duct (201) is fixedly connected to an adsorption tower (203). The interior of the adsorption tower (203) is provided with an activated carbon adsorption layer (204), and the top of the activated carbon adsorption layer (204) is fixedly connected to a molecular sieve composite adsorption layer (205).

2. The urea-formaldehyde resin storage tank with a low-formaldehyde emission structure according to claim 1, characterized in that, The outer surface of the tank (1) is fixedly connected to the feed inlet (3), and the inner wall of the tank (1) is fixedly connected to the inner wall anti-corrosion strengthening mechanism (4).

3. A urea-formaldehyde resin storage tank with a low-aldehyde emission structure according to claim 2, characterized in that, The inner wall anti-corrosion strengthening mechanism (4) includes a metal anti-corrosion mesh (401) fixedly connected to the inner wall of the tank (1), and an anti-corrosion primer (402) is fixedly connected to one side of the metal anti-corrosion mesh (401), and a ceramic anti-corrosion coating (403) is fixedly connected to one side of the anti-corrosion primer (402).

4. A urea-formaldehyde resin storage tank with a low-aldehyde emission structure according to claim 1, characterized in that, A drive motor (5) is fixedly connected to the outer surface of the tank (1), and a drive rod (6) is fixedly connected to the output end of the drive motor (5).

5. A urea-formaldehyde resin storage tank with a low-aldehyde emission structure according to claim 4, characterized in that, The outer surface of the drive rod (6) is fixedly connected to a connecting stirring paddle (7), and the outer surface of the tank (1) is fixedly connected to a cleaning port (8).

6. A urea-formaldehyde resin storage tank with a low-aldehyde emission structure according to claim 5, characterized in that, The cleaning port (8) is equipped with a cleaning pipe (9), and a high-pressure cleaning pump (10) is fixedly connected to one end of the cleaning pipe (9).

7. A urea-formaldehyde resin storage tank with a low-aldehyde emission structure according to claim 6, characterized in that, One end of the high-pressure cleaning pump (10) is provided with a cleaning box (11), and a support frame (12) is fixedly connected to the outer surface of the tank (1). An outlet (13) is opened at the bottom of the tank (1).

Images