Integrated equipment suitable for slaughter wastewater treatment

Abstract

The utility model relates to the technical field of slaughter wastewater treatment, in particular to integrated equipment suitable for slaughter wastewater treatment, which comprises a casing, a connecting plate is fixedly arranged on one side of the casing, a fixing plate is fixedly arranged at the top end of the connecting plate, a fixing box is fixedly arranged at the top end of the fixing plate, and a filter box is movably arranged in the fixing box. Through the arrangement of the filter box, the first filter plate, the first filter screen and the drainage pipe, the slaughter wastewater which is just collected is poured into the fixed box from the top end of the fixed box during use, so that minced meat and large-particle impurities in the slaughter wastewater are isolated in the filter box by the first filter screen, and the residual wastewater passes through the first filter screen and is filtered by the drainage pipe; the slaughter wastewater is discharged into the flow guide groove from the first liquid outlet pipe at the bottom end of the filter box and then enters the reaction tank from the flow guide pipe, so that the slaughter wastewater is preliminarily filtered, and the situation that large minced meat and large impurities are mixed into the reaction tank and the quality of the finally filtered liquid is reduced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of slaughter wastewater treatment, and specifically relates to an integrated device suitable for slaughter wastewater treatment. Background Technique

[0002] Slaughter wastewater refers to the wastewater generated during meat processing and slaughter. This type of wastewater mainly comes from places such as slaughterhouses, meat processing plants, and farms. The main pollutants in slaughter wastewater include blood, fur, minced meat, internal organ residues, grease, feces, dirt, etc. These pollutants make the wastewater show high organic matter concentration, suspended solid concentration, and chromaticity, and may contain harmful microorganisms such as pathogenic bacteria, viruses, and parasites.

[0003] Traditional slaughter wastewater treatment devices lack a pretreatment function. When in use, slaughter wastewater is generally directly mixed and reacted with a catalyst. Since there are still large pieces of meat foam and internal organ residues in the slaughter wastewater, the quality of the treated wastewater decreases. Moreover, traditional slaughter wastewater treatment devices also lack a stirring function. After the wastewater and the catalyst come into contact, it is impossible to ensure their full mixing and reaction, resulting in an extended reaction time and reduced treatment efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide an integrated device suitable for slaughter wastewater treatment to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] An integrated device suitable for slaughter wastewater treatment includes a machine shell. One side of the machine shell is fixedly provided with a connecting plate. The top of the connecting plate is fixedly provided with a fixing plate. The top of the fixing plate is fixedly provided with a fixing box. Inside the fixing box, a filtering box is movably arranged. Inside the filtering box, a first filter plate is fixedly provided. Inside the first filter plate, a first filter net is fixedly provided. In the middle of the bottom end of the filtering box, a first liquid outlet pipe is fixedly provided. One side of the fixing box is fixedly provided with a drainage pipe, and the drainage pipe is connected through the side of the machine shell. On the left side of the top of the machine shell, a top cover is fixedly provided. On the left side inside the machine shell, a reaction tank is opened. On the right side of the top of the machine shell, a conveying component is fixedly provided.

[0007] Inside the top cover, a stirring assembly is fixedly arranged. The stirring assembly includes a rotating motor, a rotating rod, and stirring rods. Inside the top cover, a rotating motor is fixedly arranged. The output end of the rotating motor passes through the bottom end of the top cover and is fixedly connected to a rotating rod. Stirring rods are fixedly arranged on the surface of the rotating rod. On the left side inside the casing, a drainage groove is opened. The drainage groove is located below the reaction tank. At the bottom end of the reaction tank, a second liquid outlet pipe is fixedly arranged. A control valve is fixedly arranged on the surface of the second liquid outlet pipe. On the right side inside the casing, a filtering groove is opened. Inside the filtering groove, a filtering assembly is movably arranged.

[0008] Preferably, the conveying assembly includes a liquid storage tank, a first conveying pipe, a conveying pump, and a second conveying pipe. On the right side of the top of the casing, a liquid storage tank is fixedly arranged. On one side of the liquid storage tank, a first conveying pipe is fixedly arranged. At one end of the first conveying pipe, a conveying pump is fixedly arranged. At one end of the conveying pump, a second conveying pipe is fixedly arranged. The second conveying pipe is connected through the other side of the casing.

[0009] Preferably, the filtering assembly includes a filtering box, a second filter plate, a second filter net, and a first pull rod. Inside the filtering groove, a filtering box is movably arranged. Inside the filtering box, a second filter plate is fixedly arranged. Inside the second filter plate, a second filter net is fixedly arranged. On one side of the filtering box, a first pull rod is fixedly arranged. The second filter plate is fixedly arranged obliquely inside the filtering box. Grooves are opened on both the front and rear sides inside the filtering groove.

[0010] Preferably, convex blocks are fixedly arranged on both sides of the filtering box. The convex blocks are movably connected to the grooves.

[0011] Preferably, second pull rods are fixedly arranged on both sides of the top of the filtering box. Third pull rods are fixedly arranged on both the front and rear sides of the top of the top cover. Positioning columns are fixedly arranged on both sides of the bottom end of the top cover. A number of positioning holes are opened on the left side of the top of the casing. The positioning columns are movably connected to the positioning holes.

[0012] Preferably, fixing blocks are fixedly arranged on both sides inside the fixing box. The top ends of the fixing blocks are movably connected to the filtering box. A flow guiding plate is fixedly arranged in the middle inside the casing. An observation window is fixedly arranged on the left side of the front of the casing. A liquid discharge pipe is fixedly arranged at the bottom of the other side of the casing.

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

[0014] 1. An integrated device applicable to the treatment of slaughter wastewater. Through the settings of a filter box, a first filter plate, a first filter screen, and a drainage pipe, when in use, the just-collected slaughter wastewater is poured into the internal fixed box from the top of the fixed box. The meat foam and large-particle impurities in the slaughter wastewater are isolated in the filter box by the first filter screen, and the remaining wastewater passes through the first filter screen and is discharged into the diversion groove from the first liquid outlet pipe at the bottom of the filter box, and then enters the reaction tank through the drainage pipe, thereby achieving the effect of preliminarily filtering the slaughter wastewater and avoiding large pieces of meat foam and large impurities from mixing into the reaction tank, resulting in a decline in the quality of the finally filtered liquid.

[0015] 2. An integrated device applicable to the treatment of slaughter wastewater. Through the settings of a rotating motor, a rotating rod, and a stirring rod, when in use, when the preliminarily filtered slaughter wastewater enters the reaction tank, the catalyst is transported into the reaction tank through a conveying component and mixed with the slaughter wastewater. The rotating motor is driven to drive the rotating rod to rotate, and the stirring rod on the surface of the rotating rod evenly stirs the slaughter wastewater and the catalyst. When a large amount of sediment is generated after the reaction in the reaction tank is completed, the control valve on the surface of the second liquid outlet pipe is opened, so that the sediment and wastewater in the reaction tank enter the filter tank and are filtered through the filtering component, thereby achieving the effect of making the mixing of the slaughter wastewater and the catalyst more uniform. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the casing and the fixed box of the present utility model;

[0018] Figure 3 It is of the present utility model Figure 1 Enlarged schematic diagram at position A;

[0019] Figure 4 It is of the present utility model Figure 2 Enlarged schematic diagram at position B;

[0020] Figure 5 It is of the present utility model Figure 2 Enlarged schematic diagram at position C.

[0021] In the figure: 1. Machine housing; 2. Connecting plate; 3. Fixed plate; 4. Fixed box; 5. Filter box; 6. First filter plate; 7. First filter net; 8. First liquid outlet pipe; 9. Drainage pipe; 10. Top cover; 11. Reaction tank; 12. Rotating motor; 13. Rotating rod; 14. Stirring rod; 15. Drainage groove; 16. Second liquid outlet pipe; 17. Control valve; 18. Filter tank; 19. Liquid storage tank; 20. First conveying pipe; 21. Conveyor pump; 22. Second conveying pipe; 23. Filter box; 24. Second filter plate; 25. Second filter net; 26. First pull rod; 27. Groove; 28. Protrusion; 29. Second pull rod; 30. Third pull rod; 31. Positioning column; 32. Positioning hole; 33. Fixed block; 34. Deflector; 35. Observation window; 36. Drain pipe. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1 - 5 As shown, a technical solution provided by the present invention: An integrated device suitable for slaughter wastewater treatment, including a machine housing 1, a connecting plate 2 is fixedly arranged on one side of the machine housing 1, a fixed plate 3 is fixedly arranged on the top end of the connecting plate 2, a fixed box 4 is fixedly arranged on the top end of the fixed plate 3, a filter box 5 is movably arranged inside the fixed box 4, a first filter plate 6 is fixedly arranged inside the filter box 5, a first filter net 7 is fixedly arranged inside the first filter plate 6, a first liquid outlet pipe 8 is fixedly arranged in the middle of the bottom end of the filter box 5, a drainage pipe 9 is fixedly arranged on one side of the fixed box 4, and the drainage pipe 9 is connected through the side of the machine housing 1, a top cover 10 is fixedly arranged on the left side of the top end of the machine housing 1, a reaction tank 11 is arranged on the left side inside the machine housing 1, and a conveying component is fixedly arranged on the right side of the top end of the machine housing 1;

[0024] In this embodiment, through the settings of the filter box 5, the first filter plate 6, the first filter net 7 and the drainage pipe 9, when in use, the just-collected slaughter wastewater is poured into the inside of the fixed box 4 from the top end of the fixed box 4, so that the meat foam and large-particle impurities in the slaughter wastewater are isolated inside the filter box 5 by the first filter net 7, and the remaining wastewater passes through the first filter net 7 and is discharged into the diversion groove from the first liquid outlet pipe 8 at the bottom end of the filter box 5, and then enters the reaction tank 11 from the drainage pipe 9, thereby achieving the effect of preliminarily filtering the slaughter wastewater and avoiding large pieces of meat foam and large impurities from mixing into the reaction tank 11, resulting in a decline in the quality of the finally filtered liquid;

[0025] Such as Figure 2And Figure 3 As shown in the figure, a stirring assembly is fixedly arranged inside the top cover 10. The stirring assembly includes a rotating motor 12, a rotating rod 13 and stirring rods 14. The rotating motor 12 is fixedly arranged inside the top cover 10. The output end of the rotating motor 12 passes through the bottom end of the top cover 10 and is fixedly connected to the rotating rod 13. Stirring rods 14 are fixedly arranged on the surface of the rotating rod 13. A drainage groove 15 is formed on the left side inside the machine shell 1. The drainage groove 15 is located below the reaction tank 11. A second liquid outlet pipe 16 is fixedly arranged at the bottom end of the reaction tank 11. A control valve 17 is fixedly arranged on the surface of the second liquid outlet pipe 16. A filtering groove 18 is formed on the right side inside the machine shell 1. A filtering assembly is movably arranged inside the filtering groove 18;

[0026] In this embodiment, through the arrangement of the rotating motor 12, the rotating rod 13 and the stirring rods 14, when the preliminarily filtered slaughter wastewater enters the reaction tank 11 during use, the catalyst is conveyed into the reaction tank 11 through the conveying assembly and mixed with the slaughter wastewater. The rotating motor 12 is driven to drive the rotating rod 13 to rotate, and the rotating rod 13 drives the stirring rods 14 on the surface to uniformly stir the slaughter wastewater and the catalyst. When a large amount of sediment is generated after the reaction in the reaction tank 11 is completed, the control valve 17 on the surface of the second liquid outlet pipe 16 is opened, so that the sediment and wastewater in the reaction tank 11 enter the filtering groove 18 and are filtered through the filtering assembly, thereby achieving the effect of more uniform mixing of the slaughter wastewater and the catalyst;

[0027] Such as Figure 1 、 Figure 2 And Figure 5 As shown in the figure, the conveying assembly includes a liquid storage tank 19, a first conveying pipe 20, a conveying pump 21 and a second conveying pipe 22. The liquid storage tank 19 is fixedly arranged on the right side of the top of the machine shell 1. A first conveying pipe 20 is fixedly arranged on one side of the liquid storage tank 19. A conveying pump 21 is fixedly arranged at one end of the first conveying pipe 20. A second conveying pipe 22 is fixedly arranged at one end of the conveying pump 21. The second conveying pipe 22 is connected through the other side of the machine shell 1. The filtering assembly includes a filtering box 23, a second filter plate 24, a second filter screen 25 and a first pull rod 26. The filtering box 23 is movably arranged inside the filtering groove 18. The second filter plate 24 is fixedly arranged inside the filtering box 23. The second filter screen 25 is fixedly arranged inside the second filter plate 24. A first pull rod 26 is fixedly arranged on one side of the filtering box 23. The second filter plate 24 is fixedly arranged obliquely inside the filtering box 23. Grooves 27 are formed on the front and rear sides inside the filtering groove 18. Protrusions 28 are fixedly arranged on both sides of the filtering box 23. The protrusions 28 are movably connected with the grooves 27;

[0028] In this embodiment, through the arrangement of the liquid storage tank 19, the first delivery pipe 20, the delivery pump 21 and the second delivery pipe 22, during use, the delivery pump 21 delivers the catalyst inside the liquid storage tank 19 to the inside of the reaction tank 11 through the first delivery pipe 20 and the second delivery pipe 22, thus achieving the effect of mixing the delivered catalyst with the slaughter wastewater. Through the arrangement of the filter box 23, the second filter plate 24, the second filter screen 25 and the first pull rod 26, during use, the bumps 28 on both sides of the filter box 23 are inserted into the grooves 27 inside the filter slot 18, thus achieving the effect of fixing the filter box 23 inside the filter slot 18. When the sediment enters the inside of the filter box 23 along with the liquid after the reaction is completed, the inclined second filter plate 24 can prevent the sediment from accumulating on one side of the filter box 23. The sediment is isolated on the surface of the second filter screen 25, and the liquid after the reaction is completed passes through the second filter screen 25 and enters the bottom end inside the filter slot 18, thus achieving the effect of separating the sediment from the liquid after the reaction is completed;

[0029] As Figure 1 , Figure 2 , Figure 3 and Figure 5 shown, on both sides of the top end of the filter box 5, second pull rods 29 are fixedly arranged. On the front and rear sides of the top end of the top cover 10, third pull rods 30 are fixedly arranged. On both sides of the bottom end of the top cover 10, positioning columns 31 are fixedly arranged. On the left side of the top end of the machine shell 1, a number of positioning holes 32 are opened. The positioning columns 31 are movably connected with the positioning holes 32. On both sides inside the fixed box 4, fixing blocks 33 are fixedly arranged. The top ends of the fixing blocks 33 are movably connected with the filter box 5. In the middle inside the machine shell 1, a flow guiding plate 34 is fixedly arranged. On the left side of the front surface of the machine shell 1, an observation window 35 is fixedly arranged. On the bottom of the other side of the machine shell 1, a liquid discharge pipe 36 is fixedly arranged;

[0030] In this embodiment, through the arrangement of the second pull rod 29, during use, pulling the second pull rod 29 facilitates taking out the filter box 5 from inside the fixed box 4, thus achieving the effect of centrally collecting the remaining large pieces of minced meat and large particles of impurities inside the filter box 5. Through the arrangement of the third pull rod 30, during use, pulling the third pull rod 30 makes the positioning column 31 at the bottom end of the top cover 10 insert into the positioning hole 32 on the left side of the top end of the machine shell 1, thus achieving the effect of fixing the top cover 10 on the left side of the top end of the machine shell 1. Through the arrangement of the fixing block 33, during use, the filter box 5 can be fixed inside the fixed box 4. Through the arrangement of the flow guiding plate 34, during use, it can guide the sediment and the reaction liquid into the filter box 23. Through the arrangement of the observation window 35, during use, the reaction condition inside the reaction tank 11 can be observed through the observation window 35, thus achieving the effect of facilitating the operator to observe and record. Through the arrangement of the liquid discharge pipe 36, during use, it is convenient to centrally collect the liquid entering the bottom of the filter slot 18.

[0031] Working principle: Through the settings of the filtration box 5, the first filter plate 6, the first filter screen 7 and the drainage pipe 9, when in use, the freshly collected slaughter wastewater is poured into the internal fixed box 4 from the top of the fixed box 4. The meat foam and large-particle impurities in the slaughter wastewater are isolated inside the filtration box 5 by the first filter screen 7. The remaining wastewater passes through the first filter screen 7 and is discharged into the diversion trough from the first liquid outlet pipe 8 at the bottom of the filtration box 5, and then enters the reaction tank 11 through the drainage pipe 9. Thus, the preliminary filtration of the slaughter wastewater is achieved, avoiding the mixing of large pieces of meat foam and large impurities into the reaction tank 11, which may lead to the decline in the quality of the finally filtered liquid. At the same time, through the settings of the rotating motor 12, the rotating rod 13 and the stirring rod 14, when in use, when the preliminarily filtered slaughter wastewater enters the reaction tank 11, the catalyst is transported into the reaction tank 11 through the conveying assembly and mixed with the slaughter wastewater. The rotating motor 12 is driven to drive the rotating rod 13 to rotate, and the rotating rod 13 drives the stirring rod 14 on its surface to evenly stir the slaughter wastewater and the catalyst. When a large amount of sediment is generated after the reaction in the reaction tank 11 is completed, the control valve 17 on the surface of the second liquid outlet pipe 16 is opened, so that the sediment and wastewater in the reaction tank 11 enter the filtration tank 18 and are filtered through the filtration assembly. Thus, the effect of making the mixture of the slaughter wastewater and the catalyst more uniform is achieved. Through the settings of the liquid storage tank 19, the first conveying pipe 20, the conveying pump 21 and the second conveying pipe 22, when in use, the conveying pump 21 transports the catalyst in the liquid storage tank 19 into the reaction tank 11 through the first conveying pipe 20 and the second conveying pipe 22. Thus, the effect of transporting the catalyst to be mixed with the slaughter wastewater is achieved. Through the settings of the filter box 23, the second filter plate 24, the second filter screen 25 and the first pull rod 26, when in use, the convex blocks 28 on both sides of the filter box 23 are inserted into the grooves 27 inside the filtration tank 18. Thus, the effect of fixing the filter box 23 inside the filtration tank 18 is achieved. When the sediment enters the filter box 23 along with the liquid after the reaction is completed, the inclined second filter plate 24 can prevent the sediment from accumulating on one side of the filter box 23. The sediment is isolated on the surface of the second filter screen 25, and the liquid after the reaction is completed passes through the second filter screen 25 and enters the bottom end of the filtration tank 18. Thus, the effect of separating the sediment and the liquid after the reaction is completed is achieved. Through the setting of the second pull rod 29, when in use, pulling the second pull rod 29 facilitates taking out the filtration box 5 from the fixed box 4. Thus, the effect of centrally collecting the remaining large pieces of meat foam and large-particle impurities inside the filtration box 5 is achieved. Through the setting of the third pull rod 30, when in use, pulling the third pull rod 30 makes the positioning column 31 at the bottom end of the top cover 10 insert into the positioning hole 32 on the left side at the top of the machine shell 1. Thus, the effect of fixing the top cover 10 on the left side at the top of the machine shell 1 is achieved. Through the setting of the fixing block 33, when in use, the filtration box 5 can be fixed inside the fixed box 4. Through the setting of the diversion plate 34, when in use, it can guide the sediment and the reaction liquid into the filter box 23. Through the setting of the observation window 35,During use, the internal reaction condition of the reaction tank 11 can be observed through the observation window 35, thus achieving the effect of facilitating the observation and recording by the operator. Through the arrangement of the drain pipe 36, it is convenient to centrally collect the liquid entering the bottom of the filtration tank 18 during use.

[0032] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated device suitable for slaughterhouse wastewater treatment, characterized in that: The invention comprises a casing (1), wherein a connecting plate (2) is fixedly arranged on one side of the casing (1), a fixing plate (3) is fixedly arranged on the top of the connecting plate (2), a fixing box (4) is fixedly arranged on the top of the fixing plate (3), a filter box (5) is movably arranged inside the fixing box (4), a first filter plate (6) is fixedly arranged inside the filter box (5), a first filter screen (7) is fixedly arranged inside the first filter plate (6), a first liquid outlet pipe (8) is fixedly arranged in the middle of the bottom end of the filter box (5), a drainage pipe (9) is fixedly arranged on one side of the fixing box (4), the drainage pipe (9) is connected to one side of the casing (1), a top cover (10) is fixedly arranged on the left side of the top of the casing (1), a reaction tank (11) is provided on the left side of the inside of the casing (1), and a conveying assembly is fixedly arranged on the right side of the top of the casing (1); A stirring assembly is fixedly arranged inside the top cover (10), and the stirring assembly comprises a rotating motor (12), a rotating rod (13) and a stirring rod (14). A rotating motor (12) is fixedly arranged inside the top cover (10), and the output end of the rotating motor (12) passes through the bottom end of the top cover (10) and is fixedly connected to the rotating rod (13), and the stirring rod (14) is fixedly arranged on the surface of the rotating rod (13). A drainage groove (15) is provided on the left side of the casing (1), and the drainage groove (15) is located below the reaction tank (11). A second liquid outlet pipe (16) is fixedly arranged at the bottom end of the reaction tank (11), and a control valve (17) is fixedly arranged on the surface of the second liquid outlet pipe (16). A filter tank (18) is provided on the right side of the casing (1), and a filter assembly is movably arranged inside the filter tank (18).

2. The integrated equipment for slaughterhouse wastewater treatment according to claim 1, characterized in that: The delivery assembly comprises a liquid storage tank (19), a first delivery pipe (20), a delivery pump (21) and a second delivery pipe (22); the liquid storage tank (19) is fixedly arranged on the right side of the top end of the housing (1); the first delivery pipe (20) is fixedly arranged on one side of the liquid storage tank (19); the delivery pump (21) is fixedly arranged on one end of the first delivery pipe (20); the second delivery pipe (22) is fixedly arranged on one end of the delivery pump (21); and the second delivery pipe (22) is connected to the other side of the housing (1) through the liquid storage tank (1).

3. The integrated equipment for slaughterhouse wastewater treatment according to claim 1, characterized in that: The filter assembly comprises a filter box (23), a second filter plate (24), a second filter net (25) and a first pull rod (26); the filter box (23) is movably arranged inside the filter tank (18); the second filter plate (24) is fixedly arranged inside the filter box (23); the second filter net (25) is fixedly arranged inside the second filter plate (24); the first pull rod (26) is fixedly arranged on one side of the filter box (23); the second filter plate (24) is located inside the filter box (23) and is tilted and fixed; grooves (27) are provided on both the front and rear sides of the filter tank (18).

4. The integrated equipment for slaughterhouse wastewater treatment according to claim 3, characterized in that: The filter box (23) is fixedly provided with protrusions (28) on both sides, and the protrusions (28) are movably connected to the grooves (27).

5. The integrated equipment for slaughterhouse wastewater treatment according to claim 1, characterized in that: A second pull rod (29) is fixedly provided on both sides of the top of the filter box (5), a third pull rod (30) is fixedly provided on both sides of the front and rear ends of the top of the top cover (10), positioning columns (31) are fixedly provided on both sides of the bottom of the top cover (10), and a plurality of positioning holes (32) are provided on the left side of the top of the casing (1), and the positioning columns (31) are movably connected to the positioning holes (32).

6. The integrated equipment for slaughterhouse wastewater treatment according to claim 1, characterized in that: Fixed blocks (33) are fixedly arranged on both sides of the fixed box (4), and the top of the fixed block (33) is movably connected to the filter box (5). A guide plate (34) is fixedly arranged in the middle of the casing (1). An observation window (35) is fixedly arranged on the left side of the front of the casing (1), and a drainage pipe (36) is fixedly arranged on the bottom of the other side of the casing (1).

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