Waste liquid resin recovery device

Abstract

The utility model relates to the field of waste liquid treatment, and particularly discloses a waste liquid resin recovery device which comprises a frame body, a settling tank is mounted on the frame body, a feeding pipe is connected to the top of the settling tank, a discharging pipe and a liquid outlet pipe are connected to the bottom of the settling tank, and the height of the liquid outlet pipe on the settling tank is larger than that of the discharging pipe on the settling tank; a heat preservation jacket is arranged on the inner wall of the settling tank, a heating pipe is arranged between the heat preservation jacket and the settling tank, and the feeding pipe, the discharging pipe and the liquid outlet pipe penetrate through the heat preservation jacket to be communicated with the inner wall of the settling tank. After being discharged into the settling tank along the feeding pipe, the waste liquid is left to stand for a period of time and is layered in the settling tank. Wherein the upper layer is waste water, the lower layer is water-based phenolic resin sediment, the waste water on the upper layer is discharged from the liquid outlet pipe, then the heating pipe is started to heat the water-based phenolic resin sediment on the lower layer, the water-based phenolic resin sediment is promoted to be dissolved, and the dissolved water-based phenolic resin is discharged along the discharging pipe. The method has the effect of recovering the water-based phenolic resin in the waste liquid.

Description

Technical Field

[0001] This application relates to the technical field of waste liquid treatment, and in particular to a waste liquid resin recovery device. Background Technology

[0002] Waterborne phenolic resin is a type of phenolic resin that uses water as the dispersion medium. It is environmentally friendly, non-toxic, and pollution-free, and is widely used in coatings, adhesives, and composite materials. The preparation method of waterborne phenolic resin typically employs chemical modification; hydrophilic groups (such as hydroxyl and carboxyl groups) are introduced into the phenolic resin molecule to make it water-soluble.

[0003] After preparation, water-based phenolic resins must be dehydrated and dried to reach a certain solid content before they can be sold. However, the waste liquid generated after dehydration and drying still contains residual water-based phenolic resin. Directly discharging this waste liquid would result in waste of raw materials and environmental pollution. Summary of the Invention

[0004] In order to avoid wasting the residual water-based phenolic resin in the waste liquid, this application provides a waste liquid resin recycling device, which has the effect of recycling water-based phenolic resin in waste liquid and protecting the environment.

[0005] The waste resin recycling device provided in this application adopts the following technical solution:

[0006] A waste resin recycling device includes a frame on which a sedimentation tank is mounted. A feed pipe is connected to the top of the sedimentation tank, and a discharge pipe and a liquid outlet pipe are connected to the bottom of the sedimentation tank. The height of the liquid outlet pipe on the sedimentation tank is greater than that of the feed pipe. An insulation jacket is provided on the inner wall of the sedimentation tank, and a heating pipe is installed between the insulation jacket and the sedimentation tank. The feed pipe, discharge pipe, and liquid outlet pipe all penetrate the insulation jacket and communicate with the inner wall of the sedimentation tank.

[0007] By adopting the above technical solution, after the waste liquid enters the settling tank through the feed pipe and is left to stand for a period of time, the waste liquid separates into layers in the settling tank, with wastewater in the upper layer and water-based phenolic resin precipitate in the lower layer. First, the wastewater formed in the upper layer is discharged through the outlet pipe. Then, the heating element is activated to heat the water-based phenolic resin precipitate in the lower layer of the settling tank, promoting its dissolution. The dissolved water-based phenolic resin flows out through the discharge pipe. In other words, this application can separate the wastewater and water-based phenolic resin in the waste liquid, and then recover the water-based phenolic resin, reducing the waste of water-based phenolic resin raw materials.

[0008] Optionally, the height of the outlet pipe on the settling tank is greater than the height of the heating pipe on the settling tank.

[0009] By adopting the above technical solution, the heating tube is set at a low position, which can effectively heat the water-based phenolic resin at the bottom of the sedimentation tank, so that the water-based phenolic resin can be fully dissolved and discharged along the discharge pipe.

[0010] Optionally, the outer surface of the discharge pipe is fitted with an insulating sleeve.

[0011] By adopting the above technical solution, the heat insulation sleeve can maintain the temperature of the water-based phenolic resin in the discharge pipe, which facilitates the discharge of the heated water-based phenolic resin along the discharge pipe.

[0012] Optionally, the end of the discharge pipe away from the sedimentation tank is connected to a receiving bucket, the bottom of the receiving bucket is provided with a support plate, and multiple pulleys are installed at the bottom of the support plate.

[0013] By adopting the above technical solution, multiple pulleys are installed at the bottom of the support plate, so that the collection bucket slides together with the support plate, which facilitates the collection and transportation of water-based phenolic resin.

[0014] Optionally, a material extraction pipe is installed on the top of the receiving hopper.

[0015] By adopting the above technical solution, the extraction pipe can be connected to a negative pressure device. The negative pressure in the extraction pipe will draw the water-based phenolic resin in the collection bucket into the dehydration and drying device, which will facilitate recycling.

[0016] Optionally, a viewing window is provided on the top of the receiving hopper.

[0017] By adopting the above technical solution, the viewing window is set on the top of the receiving hopper, which allows for direct observation of the liquid level of water-based phenolic resin in the receiving hopper, facilitating subsequent operations.

[0018] Optionally, the top of the receiving hopper is equipped with an exhaust pipe.

[0019] By adopting the above technical solution, the exhaust gas pipe can be connected to the combustion furnace through the pipeline, and the exhaust gas in the sedimentation tank and the receiving bucket can be discharged into the combustion furnace. The exhaust gas can be converted into harmless gas after passing through the combustion furnace, thus reducing exhaust gas pollution.

[0020] Optionally, a threaded sleeve is threaded onto the exhaust pipe, and the threaded sleeve has an internal thread.

[0021] By adopting the above technical solution, the tight connection between the threaded sleeve and the exhaust pipe improves the sealing performance of the exhaust pipe and reduces exhaust gas leakage.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. After the waste liquid is allowed to stand in the sedimentation tank, the wastewater and water-based phenolic resin are separated. The water-based phenolic resin settles at the bottom of the sedimentation tank. The heating tube is turned on to heat the bottom of the sedimentation tank, which effectively dissolves the water-based phenolic resin precipitate and promotes it to be discharged into the collection tank through the discharge pipe. Then the remaining wastewater is discharged along the liquid outlet pipe, which helps to recover the water-based phenolic resin in the waste liquid.

[0024] 2. One end of the discharge pipe is connected to a receiving bucket. After the water-based phenolic resin is heated and dissolved, it is discharged into the receiving bucket through the discharge pipe for easy storage. The bottom of the receiving bucket is equipped with a support plate, and the bottom of the support plate is equipped with pulleys, so that the receiving bucket slides with the support plate, which facilitates the transportation of water-based phenolic resin.

[0025] 3. The outer surface of the discharge pipe is fitted with an insulation sleeve, which can isolate the temperature outside the discharge pipe, so that the heated and dissolved water-based phenolic resin can be discharged along the discharge pipe. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a waste resin recycling device according to this application;

[0027] Figure 2 This is a schematic cross-sectional view of the structure of a waste resin recycling device along the length direction AA of this application.

[0028] Attached reference numerals: 1. Frame; 2. Sedimentation tank; 3. Feed pipe; 4. Discharge pipe; 5. Liquid discharge pipe; 6. Insulation jacket; 7. Heating pipe; 8. Insulation partition; 9. Collection bucket; 10. Support plate; 11. Pulley; 12. Extraction pipe; 13. Viewing window; 14. Exhaust gas pipe; 15. Threaded sleeve. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0030] This application discloses a waste resin recycling device, referring to... Figure 1 and Figure 2The system includes a frame 1, on which a sedimentation tank 2 is mounted. A feed pipe 3 is connected to the top of the sedimentation tank 2, and a liquid outlet pipe 5 and a discharge pipe 4 are connected to the bottom. A valve is installed on the discharge pipe 4. The height of the liquid outlet pipe 5 within the sedimentation tank 2 is greater than the height of the discharge pipe 4. An insulation jacket 6 is installed on the inner wall of the sedimentation tank 2, and a heating pipe 7 is fixedly installed between the insulation jacket 6 and the sedimentation tank 2. The height of the liquid outlet pipe 5 within the sedimentation tank 2 is greater than the height of the heating pipe 7 within the sedimentation tank 2. The feed pipe 3, liquid outlet pipe 5, and discharge pipe 4 all penetrate the insulation jacket 6 and communicate with the inner wall of the sedimentation tank 2. Waste liquid is discharged into the sedimentation tank 2 along the feed pipe 3. After settling, the waste liquid separates in the sedimentation tank 2, forming an upper layer of wastewater and a lower layer of water-based phenolic resin precipitate. First, the upper wastewater is discharged from the outlet pipe 5. Then, the heating pipe 7 is started to heat the lower water-based phenolic resin precipitate, which promotes the dissolution of the water-based phenolic resin precipitate and facilitates its discharge and recovery from the outlet pipe 4, thus reducing raw material waste.

[0031] Reference Figure 2 To effectively collect and transport water-based phenolic resin, a receiving tank 9 is connected to the end of the discharge pipe 4 away from the settling tank 2. A support plate 10 is installed at the bottom of the receiving tank 9, and multiple pulleys 11 are installed at the bottom of the support plate 10 to facilitate the collection and transportation of water-based phenolic resin. An insulation sleeve 8 is fitted on the outer surface of the discharge pipe 4 to maintain a stable temperature when the heated water-based phenolic resin is discharged along the discharge pipe 4, facilitating the discharge of the water-based phenolic resin.

[0032] Reference Figure 1 The top of the receiving hopper 9 is equipped with a suction pipe 12, which can be connected to a negative pressure device. The negative pressure in the suction pipe 12 draws the water-based phenolic resin in the receiving hopper 9 into a dehydration and drying device for further dehydration and recycling. In order to make the liquid level of the water-based phenolic resin in the receiving hopper 9 directly observable, a viewing window 13 is provided on the top of the receiving hopper 9.

[0033] Reference Figure 1 To reduce exhaust gas pollution, an exhaust gas pipe 14 is installed at the top of the receiving hopper 9. A threaded sleeve 15 is threaded onto the exhaust gas pipe 14, and the threaded sleeve 15 has internal threads. The end of the threaded sleeve 15 away from the exhaust gas pipe 14 can be threaded to the pipe of the combustion furnace, which improves the sealing of the connection between the exhaust gas pipe 14 and the combustion furnace. Furthermore, the exhaust gas is converted into harmless gas after passing through the combustion furnace, reducing the pollution of the exhaust gas to the environment.

[0034] The implementation principle of the waste liquid resin recovery device disclosed in this application is as follows: the waste liquid enters the sedimentation tank 2 along the feed pipe 3, and is left to stand for a period of time. The water-based phenolic resin settles at the bottom of the sedimentation tank 2, and wastewater is formed on the upper layer of the sedimentation tank 2 and discharged along the liquid outlet pipe 5. Then, the heating pipe 7 is activated, and the heating pipe 7 dissolves the water-based phenolic resin at the bottom of the sedimentation tank 2. The dissolved water-based phenolic resin is discharged into the collection tank 9 along the discharge pipe 4, so that the water-based phenolic resin in the waste liquid can be effectively recovered, reducing the waste of raw materials.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waste resin recycling device, characterized in that: The system includes a frame (1), on which a sedimentation tank (2) is installed. The top of the sedimentation tank (2) is connected to a feed pipe (3), and the bottom of the sedimentation tank (2) is connected to a discharge pipe (4) and a liquid outlet pipe (5). The height of the liquid outlet pipe (5) on the sedimentation tank (2) is greater than the height of the discharge pipe (4) on the sedimentation tank (2). The inner wall of the sedimentation tank (2) is provided with a heat insulation jacket (6), and a heating pipe (7) is provided between the heat insulation jacket (6) and the sedimentation tank (2). The feed pipe (3), the discharge pipe (4), and the liquid outlet pipe (5) all penetrate the heat insulation jacket (6) and communicate with the inner wall of the sedimentation tank (2).

2. The waste resin recovery device according to claim 1, characterized in that, The height of the outlet pipe (5) on the settling tank (2) is greater than the height of the heating pipe (7) on the settling tank (2).

3. The waste resin recovery device according to claim 1, characterized in that, The outer surface of the discharge pipe (4) is fitted with a heat-insulating sleeve (8).

4. The waste resin recovery device according to claim 3, characterized in that, The discharge pipe (4) is connected to a receiving bucket (9) at the end away from the sedimentation tank (2). A support plate (10) is provided at the bottom of the receiving bucket (9), and multiple pulleys (11) are installed at the bottom of the support plate (10).

5. The waste resin recovery device according to claim 4, characterized in that, The top of the receiving hopper (9) is equipped with a material extraction pipe (12).

6. The waste resin recovery device according to claim 4, characterized in that, A viewing window (13) is provided on the top of the receiving hopper (9).

7. The waste resin recovery device according to claim 4, characterized in that, The top of the receiving hopper (9) is equipped with an exhaust pipe (14).

8. The waste resin recovery device according to claim 7, characterized in that, The exhaust pipe (14) is threaded with a threaded sleeve (15), and the threaded sleeve (15) has an internal thread.

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