Device for treating DMF (Dimethyl Formamide) wastewater by utilizing absorption heat pump

Abstract

The utility model discloses a device for performing DMF (Dimethyl Formamide) wastewater treatment by utilizing an absorption heat pump, which comprises a filter pipe body, a clamping ring fixedly connected to the left end of the filter pipe body, a flange fixedly connected to the right side of the filter pipe body, a filter screen fixedly connected in the filter pipe body, a rotating shaft rotatably connected to the middle position of the filter screen, and a rotating shaft connected to the rotating shaft, the right side of the filter screen located at the right end is fixedly connected with a fixing rod, the fixing rod located on the upper side of the rotating shaft is fixedly connected with a supporting rod, the supporting rod is rotationally connected with a driving shaft, the lower end of the driving shaft is fixedly connected with a first bevel gear, and the upper end of the driving shaft is rotationally connected with a second bevel gear; a cleaning brush is fixedly connected to the fixing ring, a driving motor is fixedly connected to the portion, located in the driving box, of the filtering pipe body, the output end of the driving motor is fixedly connected with a third bevel gear, and a fourth bevel gear is fixedly connected to the portion, located below the first bevel gear, of the rotating shaft. Through the structure, the problem that later cleaning and maintenance are inconvenient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and particularly relates to a device for treating DMF wastewater by using an absorption heat pump. Background Art

[0002] Since DMF only acts as a carrier solvent without undergoing chemical reactions, there is almost no loss in quantity, but all of it enters the production wastewater. Each year, the amount of DMF-containing wastewater discharged by the synthetic leather industry alone is about 100 million tons. DMF has biological toxicity. Long-term contact or inhalation by the human body will hinder the hematopoietic function, cause liver disorders, and also cause serious pollution to the atmosphere and water. DMF has a relatively high value. In order to eliminate the impact of DMF wastewater on the environment and reduce the production cost of enterprises, it is necessary to recover and recycle DMF wastewater.

[0003] When applying for a patent, it was found through retrieval that the Chinese patent with the patent number CN202023082015.7: a device for treating DMF wastewater by using an absorption heat pump, including a type I absorption heat pump and a vacuum rectification tower; a dmf filter is arranged at the feed end of the vacuum rectification tower, a reboiler is arranged on the vacuum rectification tower, a generator is arranged on the type I absorption heat pump, a condensation tank is arranged in the generator, a hot steam pipe is arranged at the top of the vacuum rectification tower, the hot steam pipe is communicated with the condensation tank, the condensation tank is provided with a condensation drain pipe and a reflux heating pipe, and the reflux heating pipe enters the type I absorption heat pump again for heating and then is connected to the heat source input end of the reboiler. This device uses the hot steam generated by the vacuum rectification tower as the driving energy of the type I absorption heat pump, and at the same time further heats this part of the steam and returns it to the reboiler for secondary distillation, thereby utilizing heat energy and also playing a role in reflux to improve the separation effect of rectification. However, during long-term use, the device needs to be cleaned and maintained. When cleaning the dmf filter of this device, it needs to be removed, and the operation is complex, so it needs to be improved. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a device for treating DMF wastewater by using an absorption heat pump, which solves the problem of inconvenient later cleaning and maintenance.

[0005] The present utility model also provides a device for treating DMF wastewater by using an absorption heat pump as described above, including: a filter tube body, a clamping ring is fixedly connected to the left end of the filter tube body, and a flange is fixedly connected to the right side. A filter screen is fixedly connected inside the filter tube body. There are three filter screens, and a rotating shaft is rotatably connected at the middle position. A fixing rod is fixedly connected to the right side of the filter screen at the right end. The right end of the rotating shaft is rotatably connected to the fixing rod. A support rod is fixedly connected to the fixing rod above the rotating shaft. A driving shaft is rotatably connected to the support rod. A first bevel gear is fixedly connected to the lower end of the driving shaft, and a second bevel gear is rotatably connected to the upper end. Fixing rings are fixedly connected to the rotating shafts on the left side of the filter screen. Cleaning brushes are fixedly connected to the fixing rings. A driving box is fixedly connected to the upper side of the filter tube body. A driving motor is fixedly connected to the filter tube body inside the driving box. The output end of the driving motor is fixedly connected to a third bevel gear. A fourth bevel gear is fixedly connected to the rotating shaft below the first bevel gear.

[0006] According to the device for treating DMF wastewater by using an absorption heat pump as described above, the first bevel gear, the second bevel gear, the third bevel gear and the fourth bevel gear have the same model. The directions of the first bevel gear and the second bevel gear are opposite. The second bevel gear is located inside the driving box.

[0007] According to the device for treating DMF wastewater by using an absorption heat pump as described above, the third bevel gear is meshed with the second bevel gear, and the first bevel gear is meshed with the fourth bevel gear.

[0008] According to the device for treating DMF wastewater by using an absorption heat pump as described above, an annular card slot is provided on the outer side of the clamping ring, and limiting ports are provided on both the upper and lower sides inside the annular card slot.

[0009] According to the device for treating DMF wastewater by using an absorption heat pump as described above, through holes are provided on the flange.

[0010] According to the device for treating DMF wastewater by using an absorption heat pump as described above, a sewage discharge pipe is provided on the filter tube body below the cleaning brush. A valve is provided on the sewage discharge pipe. There are three sewage discharge pipes, and they are respectively located below the filter screens.

[0011] According to the device for treating DMF wastewater by using an absorption heat pump as described above, the side of the cleaning brush with bristles is in contact with the filter screen.

[0012] According to the device for treating DMF wastewater by using an absorption heat pump as described above, the filter screen is circular, and the outer periphery is fixedly connected to the inner side wall of the filter tube body.

[0013] The present utility model has the following beneficial effects:

[0014] In the present utility model, a driving motor is provided on the filter tube body. Meanwhile, under the action of the first bevel gear, the second bevel gear, the third bevel gear and the fourth bevel gear, the driving shaft drives the rotating shaft to rotate, so that the cleaning brush rotates around the rotating shaft to clean the filter net, and finally discharges from the sewage pipe. Compared with the previous one, the operation is convenient, and the cleaning can be completed without disassembling the filter tube body.

[0015] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0016] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0017] Figure 1 It is a structural diagram of a device for treating DMF wastewater by using an absorption heat pump according to the present utility model;

[0018] Figure 2 It is a sectional structural diagram of a device for treating DMF wastewater by using an absorption heat pump according to the present utility model;

[0019] Figure 3 It is Figure 1 an enlarged structural diagram of part A in

[0020] Figure 4 It is Figure 2 an enlarged structural diagram of part B in

[0021] Legend Explanation:

[0022] 1. Filter tube body; 2. Clamping ring; 21. Annular clamping groove; 22. Limit port; 3. Flange; 4. Driving box; 41. Driving motor; 5. Filter net; 6. Rotating shaft; 7. Fixed ring; 71. Cleaning brush; 8. Fixed rod; 9. Support rod; 10. Driving shaft; 11. First bevel gear; 12. Second bevel gear; 13. Third bevel gear; 14. Fourth bevel gear; 15. Sewage pipe; 16. Valve. Specific Embodiments

[0023] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0024] Refer to Figures 1 - 4, in an embodiment of the present utility model, a device for treating DMF wastewater by using an absorption heat pump includes a filter pipe body 1. A clamping ring 2 is fixedly connected to the left end of the filter pipe body 1, and a flange 3 is fixedly connected to the right side. An annular slot 21 is provided on the outer side of the clamping ring 2, and limiting ports 22 are provided on both the upper and lower sides within the annular slot 21. Through holes are provided on the flange 3. Through the annular slot 21 and the limiting ports 22, the wastewater pipe can be directly installed within the annular slot 21, and then the wastewater pipe is rotated to be clamped within the limiting ports 22 to complete the installation, with convenient operation. Through bolts and the through holes, the filter pipe body 1 can be installed on the vacuum rectification tower;

[0025] A filter net 5 is fixedly connected within the filter pipe body 1. The filter net 5 is circular, and its outer periphery is fixedly connected to the inner side wall of the filter pipe body 1. There are three filter nets 5, and a rotating shaft 6 is rotatably connected at the middle position. A fixing rod 8 is fixedly connected to the right side of the filter net 5 at the right end. The right end of the rotating shaft 6 is rotatably connected to the fixing rod 8. A support rod 9 is fixedly connected to the fixing rod 8 above the rotating shaft 6. A driving shaft 10 is rotatably connected to the support rod 9. A first bevel gear 11 is fixedly connected to the lower end of the driving shaft 10, and a second bevel gear 12 is rotatably connected to the upper end. Fixing rings 7 are fixedly connected to the rotating shaft 6 on the left side of the filter net 5. Cleaning brushes 71 are fixedly connected to the fixing rings 7. A sewage discharge pipe 15 is provided on the filter pipe body 1 below the cleaning brushes 71. A valve 16 is provided on the sewage discharge pipe 15. There are three sewage discharge pipes 15, and they are respectively located below the filter nets 5. The side of the cleaning brush 71 with bristles is in contact with the filter net 5;

[0026] A driving box 4 is fixedly connected to the upper side of the filter pipe body 1. A driving motor 41 is fixedly connected to the filter pipe body 1 within the driving box 4. The output end of the driving motor 41 is fixedly connected to a third bevel gear 13. A fourth bevel gear 14 is fixedly connected to the rotating shaft 6 below the first bevel gear 11. The first bevel gear 11, the second bevel gear 12, the third bevel gear 13, and the fourth bevel gear 14 are of the same model. The directions of the first bevel gear 11 and the second bevel gear 12 are opposite. The second bevel gear 12 is located within the driving box 4. The third bevel gear 13 is meshed with the second bevel gear 12, and the first bevel gear 11 is meshed with the fourth bevel gear 14.

[0027] Working principle: When in use, the filter pipe body 1 is installed on the vacuum rectification tower through the flange 3, and then the wastewater pipe is connected to the filter pipe body 1 through the clamping ring 2. After the filter pipe body 1 filters the DMF wastewater, it is transported to the vacuum rectification tower, and the DMF wastewater is treated by a type of absorption heat pump and the vacuum rectification tower;

[0028] When it is necessary to clean the filter tube body 1, start the driving motor 41. The driving motor 41 drives the driving shaft 10 to rotate through the second bevel gear 12 and the third bevel gear 13. The driving shaft 10 drives the rotating shaft 6 to rotate through the third bevel gear 13 and the fourth bevel gear 14, so that the cleaning brush 71 rotates around the rotating shaft 6 to clean the filter screen 5. At the same time, open the valve 16 on the sewage discharge pipe 15 to clean the residues and dirt on the filter screen 5. The operation is convenient, and the cleaning can be completed without disassembling the filter tube body 1.

[0029] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An apparatus for treating DMF wastewater using an absorption heat pump, characterized in that, Comprising: A filter tube body (1), a clamping ring (2) is fixedly connected to the left end of the filter tube body (1), and a flange (3) is fixedly connected to the right side. A filter net (5) is fixedly connected inside the filter tube body (1). There are three filter nets (5), and a rotating shaft (6) is rotatably connected at the middle position. A fixing rod (8) is fixedly connected to the right side of the filter net (5) at the right end. The right end of the rotating shaft (6) is rotatably connected to the fixing rod (8). A support rod (9) is fixedly connected to the fixing rod (8) above the rotating shaft (6). A driving shaft (10) is rotatably connected to the support rod (9). A first bevel gear (11) is fixedly connected to the lower end of the driving shaft (10), and a second bevel gear (12) is rotatably connected to the upper end. Fixing rings (7) are fixedly connected to the rotating shaft (6) on the left side of the filter net (5). Cleaning brushes (71) are fixedly connected to the fixing rings (7). A driving box (4) is fixedly connected to the upper side of the filter tube body (1). A driving motor (41) is fixedly connected to the filter tube body (1) inside the driving box (4). The output end of the driving motor (41) is fixedly connected to a third bevel gear (13). A fourth bevel gear (14) is fixedly connected to the rotating shaft (6) below the first bevel gear (11).

2. The device for treating DMF wastewater by using an absorption heat pump according to claim 1, wherein The first bevel gear (11), the second bevel gear (12), the third bevel gear (13) and the fourth bevel gear (14) are of the same model. The directions of the first bevel gear (11) and the second bevel gear (12) are opposite. The second bevel gear (12) is located inside the driving box (4).

3. The device for DMF wastewater treatment using an absorption heat pump according to claim 2, wherein, The third bevel gear (13) is meshed with the second bevel gear (12), and the first bevel gear (11) is meshed with the fourth bevel gear (14).

4. The device for DMF wastewater treatment using an absorption heat pump according to claim 3, characterized in that An annular groove (21) is provided on the outer side of the clamping ring (2). Limit openings (22) are provided on both the upper and lower sides inside the annular groove (21).

5. The device for DMF wastewater treatment using an absorption heat pump according to claim 4, characterized in that, Through holes are provided on the flange (3).

6. The device for DMF wastewater treatment using an absorption heat pump according to claim 5, characterized in that, A sewage discharge pipe (15) is provided on the filter tube body (1) below the cleaning brush (71). A valve (16) is provided on the sewage discharge pipe (15). There are three sewage discharge pipes (15), and they are respectively located below the filter nets (5).

7. The device for treating DMF wastewater by using an absorption heat pump according to claim 6, characterized in that, The side of the cleaning brush (71) with bristles is in contact with the filter net (5).

8. The device for DMF wastewater treatment using an absorption heat pump according to claim 7, characterized in that, The filter net (5) is circular, and the outer periphery is fixedly connected to the inner side wall of the filter tube body (1).

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