Domestic sewage discharge system

Abstract

The invention discloses a domestic sewage discharge system. The domestic sewage discharge system comprises a primary treatment box, a secondary treatment box, a first treatment pond, a second treatment pond and a filter pipe, and a retaining assembly for fixing the activated carbon plate is arranged on the filter pipe. The holding assembly comprises a mounting base, an elastic piece and a pressure applying piece. According to the domestic sewage discharge system, the primary treatment tank, the secondary treatment tank, the first treatment tank, the second treatment tank and the filter pipe are arranged, so that domestic sewage can be treated and discharged after reaching the standard. And meanwhile, the mounting and dismounting work of the activated carbon plate can be improved through the arranged maintaining assembly. The activated carbon plate can be disassembled, assembled and replaced without matching of other special tools, the labor intensity is reduced, the replacement efficiency of the activated carbon plate is improved, the domestic sewage treatment efficiency is improved, and the domestic sewage filtering quality is improved.

Description

Technical Field

[0001] The present invention relates to domestic sewage treatment technology, and in particular to a domestic sewage discharge system. Background Art

[0002] Sewage treatment refers to measures taken to change the nature of sewage so that it does not harm the environmental waters. When treating the sewage discharged from urban sewage treatment plants, biological filter beds are usually used for filtration treatment, which utilize microorganisms to degrade harmful components in the sewage.

[0003] CN215440099U discloses a biological filter bed device for urban sewage treatment plants. By fixedly connecting a first filter screen and a second filter screen to the inner wall of the treatment frame, and fixedly connecting an installation net to the bottom of the inner wall of the treatment frame, and arranging biological filter media inside the installation net, it solves the problems of the single structure of the current biological filter bed device, low sewage filtration efficiency, easy blockage of the filter screen, and affecting the sewage treatment efficiency. Since the first filter screen, the second filter screen, and the installation net are all fixed on the inner wall of the treatment frame, it is inconvenient to replace the first filter screen, the second filter screen, and the installation net when they are damaged or blocked subsequently, which will affect the sewage filtration treatment effect of the device subsequently.

[0004] CN219363313U discloses an activated carbon filtration device, which uses a fixed card, a notch, and an elastic member for cooperative limitation, and it is easy to cause unstable installation of the filtration device when adsorbing sewage in a larger pipeline. Summary of the Invention

[0005] In order to solve the defects existing in the above-mentioned prior art, the present invention proposes a domestic sewage discharge system.

[0006] The technical solution of the present invention is realized as follows: A domestic sewage discharge system, comprising: A primary treatment tank; A secondary treatment tank connected to the primary treatment tank; A first treatment pool, which is connected to the secondary treatment tank through a filter pipe. An activated carbon plate is provided in the middle of the filter pipe. A holding assembly for fixing the activated carbon plate is provided on the filter pipe. An installation port is provided on the filter pipe. First limiting plates, second limiting plates, and symmetrically arranged fixing members are provided on both sides of the installation port. Symmetrically arranged fixing blocks are provided at both ends of one of the fixing members, and fixing holes are provided on the fixing blocks; And a second treatment pool connected to the first treatment pool; Wherein, the holding assembly includes: A mounting seat cooperating with the activated carbon plate. An installation chamber for accommodating the activated carbon plate is provided in the middle of the mounting seat. The mounting seat and the activated carbon plate are arranged in the installation port; An elastic member matched with the mounting seat, wherein the middle of the elastic member is sleeved outside the mounting seat, the two ends of the elastic member are detachably connected to the fixing member, and the middle part of the elastic member is driven to enter the mounting opening for sealing by the pressure of the mounting seat; And a pressure-applying piece is hingedly connected to the fixing block, wherein the pressure-applying piece is connected to the fixing block via a hinge.

[0007] In the present invention, the first limiting plate is provided with a first limiting protrusion, the second limiting plate is provided with a second limiting protrusion, the first limiting protrusion and the second limiting protrusion are both facing the same direction, and the first limiting protrusion is kept facing the second limiting plate.

[0008] In the present invention, positioning bolts cooperating with the hinge are provided on both sides of the pressure member, and the hinge and the positioning bolt are connected by a tension spring. One end of the pressure member cooperates with the first limit plate for limiting position, and the other end cooperates with the second limit plate for limiting position. The pressure member pushes the mounting seat and drives the elastic member to move into the mounting port through the mounting seat. The pressure member is composed of a plate body, and a pulling plate and a positioning plate are provided at one end of the plate body. A limiting undercut is provided on the positioning plate, and a second positioning port cooperating with the second limiting protrusion is formed between the limiting undercut and the plate body.

[0009] In the present invention, hinged parts are provided on both sides of the other end of the plate body, a strip hole cooperating with the hinge is provided in the middle of the hinged part, the positioning bolt is arranged on the hinged part, an avoidance opening is formed between the hinged part and the hinged part, and a first positioning opening cooperating with the first limiting protrusion is provided on the hinged part.

[0010] In the present invention, the mounting seat is composed of a pressure portion and symmetrically arranged positioning arms, a mounting area is formed between the positioning arms, the mounting chamber is arranged in the middle of the pressure portion, a mounting groove is provided on one side of the connection between the positioning arm and the pressure portion, and the width of the positioning arm is smaller than the width of the pressure portion.

[0011] In the present invention, the elastic part is composed of a contact part and a connecting part and a retaining part symmetrically arranged on both sides of the contact part. The contact part is connected to the retaining part through the connecting part. The contact part is provided with a symmetrically arranged long sealing part and a short sealing part. A retaining hole cooperating with the pressure-applying part is formed in the middle of the contact part.

[0012] In the present invention, the retaining portion is provided with a symmetrically arranged sliding portion, the fixing member is composed of a fixing plate and fixed ends symmetrically arranged on both sides of the fixing plate, and a sliding groove cooperating with the sliding portion is provided in the middle of the fixed end.

[0013] In the present invention, a movable hole is provided on the holding portion, a positioning post is provided in the movable hole, a first contact block, a second contact block and a pulling rod are provided on the positioning post, and elastic arms connected to the inner wall of the movable hole are provided on the positioning post, the first contact block and the second contact block.

[0014] In the present invention, a positioning hole matching with the positioning post is provided on the fixing plate.

[0015] In the present invention, a guiding groove matching with the positioning post is further provided on the fixing plate, a guiding inclined surface is provided in the guiding groove, and the positioning post enters the positioning hole through the guiding inclined surface.

[0016] Implementing the domestic sewage discharge system of the present invention has the following beneficial effects: In this domestic sewage discharge system, by setting up a primary treatment tank, a secondary treatment tank, a first treatment pool, a second treatment pool and a filter pipe, it can treat domestic sewage and discharge it up to standard. At the same time, the disassembly and assembly work of the activated carbon plate can be improved through the provided holding assembly. The pressing member can press and limit the mounting seat to ensure that the mounting seat will not move out of the mounting opening under the elastic force of the elastic member, realizing the stable installation of the activated carbon plate. At the same time, when disassembling, assembling and replacing the activated carbon plate, the cooperation of other special tools is not required, and the disassembly, assembly and replacement work of the activated carbon plate can be completed, reducing the labor intensity, improving the replacement efficiency of the activated carbon plate, accelerating the efficiency of domestic sewage treatment, and improving the filtering quality of domestic sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the domestic sewage discharge system of the present invention; Figure 2 is Figure 1 a schematic structural diagram of the filter pipe and the holding assembly in Figure 3 is Figure 2 a top view of Figure 4 is Figure 3 a sectional view taken along line A-A in Figure 5 is Figure 4 a partially enlarged view at B in Figure 6 is Figure 2 an exploded view of Figure 7 is Figure 6 a schematic structural diagram of the filter pipe in Figure 8 is Figure 7 a partially enlarged view at C in Figure 9 is Figure 6 a schematic structural diagram of the mounting seat in Figure 10 isFigure 6 Schematic diagram of the hinge and tension spring structure in Figure 11 is Figure 6 Schematic diagram of the pressing member structure in Figure 12 is Figure 11 front view of Figure 13 is Figure 11 schematic diagram of the structure of in another direction; Figure 14 is Figure 6 Schematic diagram of the elastic member structure in Figure 15 is Figure 14 schematic diagram of the structure of in another direction; Figure 16 is Figure 14 partial enlarged view at D in Figure 17 Schematic diagram of the moving state of the holding component structure in the present invention.

[0018] In the figure: primary treatment tank 1, secondary treatment tank 2, first treatment pool 3, second treatment pool 4, filter pipe 5, first liquid inlet pipe 6, slag discharge pipe 7, first feeding pipe 8, second liquid inlet pipe 9, motor 10, second feeding pipe 11, activated carbon plate 12, connecting pipe 13, conveying channel 14, installation opening 15, first limiting plate 16, second limiting plate 17, fixing member 18, fixing block 19, fixing hole 20, first limiting protrusion 21, first limiting protrusion 21, second limiting protrusion 22, holding component 23, mounting seat 24, elastic member 25, pressing member 26, installation chamber 27, pressing part 28, positioning arm 29, installation area 30, installation groove 31, pressing surface 32, contact part 33, long sealing part 34, short sealing part 35, connecting part 36, holding part 37, holding hole 38, sliding part 39, fixing plate 40, fixed end 41, sliding groove 42, positioning column 43, positioning hole 44, moving hole 45, first contact block 46, second contact block 47, pulling rod 48, elastic arm 49, guiding groove 50, guiding inclined surface 51, hinge 52, positioning bolt 53, tension spring 54, installation column 55, blocking column 56, connecting column 57, rotating disk 58, connecting rod 59, hinge part 60, first positioning opening 61, plate body 62, pulling plate 63, positioning plate 64, limiting undercut 65, second positioning opening 66, strip hole 67, avoiding opening 68. Specific embodiments

[0019] 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.

[0020] Embodiment 1: As shown in Figures 1 to 17As shown, this domestic sewage discharge system of the present invention includes a primary treatment tank 1, a secondary treatment tank 2, a first treatment pond 3, a second treatment pond 4, and a filter pipe 5. The primary treatment tank 1 is provided with a first liquid inlet pipe 6, a slag discharge pipe 7, and a first feeding pipe 8. The domestic sewage to be treated is intercepted by a fence for larger items, and then introduced into the primary treatment tank 1 through the first liquid inlet pipe 6 for the first sewage treatment. By adding a first sewage treatment reagent into the first feeding pipe 8, some impurities in the sewage settle, and then are discharged from the slag discharge pipe 7. The sewage after the first sewage treatment then enters the secondary treatment tank 2.

[0021] The secondary treatment tank 2 is connected to the primary treatment tank 1. The secondary treatment tank 2 is provided with a second liquid inlet pipe 9, a motor 10, and a second feeding pipe 11. The lower end of the motor 10 is provided with a stirring member, and the stirring member can stir the domestic sewage in the secondary treatment tank 2 to accelerate the dissolution of impurities. The sewage in the primary treatment tank 1 enters the secondary treatment tank 2 through the second liquid inlet pipe 9, and a second sewage treatment reagent is added for the second time through the second feeding pipe 11. At the same time, it is stirred by the stirring member provided in the secondary treatment tank 2, so that some substances in the domestic sewage dissolve in the water.

[0022] Subsequently, it is discharged from the secondary treatment tank 2 into the first treatment pond 3. The first treatment pond 3 and the secondary treatment tank 2 are connected by a filter pipe 5. An activated carbon plate 12 is provided in the middle of the filter pipe 5. By absorbing the dissolved domestic sewage through the activated carbon plate 12, the dissolved impurities in the water are filtered. The first treatment pond 3 and the second treatment pond 4 are added with a third sewage treatment reagent, and the domestic sewage is exposed to the sun for the first time, and then introduced into the second treatment pond 4.

[0023] The second treatment pond 4 is connected to the first treatment pond 3, and the first treatment pond 3 and the second treatment pond 4 are connected by a connecting pipe 13. The domestic sewage in the second treatment pond 4 is added with a third sewage treatment reagent again and exposed to the sun for the second time, and then sampled and detected. If the detection meets the discharge requirements, it can be discharged. If the detection does not meet the discharge requirements, it will be transported back to the primary treatment tank 1 for treatment again.

[0024] The first sewage treatment reagent, the second sewage treatment reagent, and the third sewage treatment reagent in this application can be products that have been publicly disclosed and used in the prior art and are reagents known to those skilled in the art. Therefore, the specific types of reagents will not be elaborated in detail here.

[0025] Embodiment 2: A conveying channel 14 is formed in the middle of the filter pipe 5. An installation opening 15 is provided on the filter pipe 5, and the installation opening 15 communicates with the conveying channel 14. The activated carbon plate 12 is inserted into the conveying channel 14 through the installation opening 15 to separate the conveying channel 14, thereby realizing the adsorption and filtration of domestic sewage discharged from the secondary treatment tank 2.

[0026] On both sides of the installation opening 15, a first limiting plate 16, a second limiting plate 17 and symmetrically arranged fixing members 18 are provided. The fixing members 18 are located in the middle of the first limiting plate 16 and the second limiting plate 17. At both ends of one of the fixing members 18, symmetrically arranged fixing blocks 19 are provided. A fixing hole 20 is provided on the fixing block 19, and the symmetrically arranged fixing blocks 19 are located between the first limiting plate 16 and the installation opening 15.

[0027] A first limiting protrusion 21 is provided on the first limiting plate 16, and a second limiting protrusion 22 is provided on the second limiting plate 17. The first limiting protrusion 21 and the second limiting protrusion 22 both face the same direction. Keep the first limiting protrusion 21 facing the second limiting plate 17. As Figure 7 shown, the first limiting protrusion 21 and the second limiting protrusion 22 both face the M direction.

[0028] Embodiment 3: A holding assembly 23 for fixing the activated carbon plate 12 is provided on the filter pipe 5. Through the cooperation of the holding assembly 23, the stable installation and convenient disassembly and assembly of the activated carbon plate 12 are facilitated. The holding assembly 23 includes a mounting seat 24, an elastic member 25 and a pressing member 26. The mounting seat 24 is used to limit the position of the activated carbon plate 12, and at the same time, it also has a sealing effect with the elastic member 25, and can also ensure that the activated carbon plate 12 does not shift in the installation position. The elastic member 25 can enhance the installation sealing strength of the mounting seat 24, and can also pull up the mounting seat 24 through the elastic force of the elastic member 25 after the pressing member 26 is opened, so that it can be lifted upward by the elastic member 25, so that the lower end of the activated carbon plate 12 is separated from the bottom wall of the conveying channel 14, facilitating the removal of the mounting seat 24 and the activated carbon plate 12 from the installation opening 15. The pressing member 26 can press and limit the mounting seat 24 to ensure that the mounting seat 24 does not move out of the installation opening 15 under the elastic force of the elastic member 25, realizing the stable installation of the activated carbon plate 12. At the same time, when disassembling and replacing the activated carbon plate 12, the disassembly and replacement work of the activated carbon plate 12 can be completed without the cooperation of other special tools, reducing the labor intensity, improving the replacement efficiency of the activated carbon plate 12, and accelerating the efficiency of domestic sewage treatment.

[0029] The mounting seat 24 is used in conjunction with the activated carbon plate 12. The mounting seat 24 and the activated carbon plate 12 are arranged in the mounting opening 15. A mounting chamber 27 for accommodating the activated carbon plate 12 is provided in the middle of the mounting seat 24. When the activated carbon plate 12 is installed in the mounting chamber 27, it is in an interference fit and needs to be squeezed by external force to install it, thereby ensuring that the activated carbon plate 12 will not fall from the mounting chamber 27.

[0030] The mounting seat 24 is composed of a pressure portion 28 and symmetrically arranged positioning arms 29, a mounting area 30 is formed between the positioning arms 29, a mounting chamber 27 is arranged in the middle of the pressure portion 28, a mounting groove 31 is arranged on one side of the connection between the positioning arm 29 and the pressure portion 28, and the width of the positioning arm 29 is smaller than the width of the pressure portion 28. A pressure surface 32 is formed at the lower end of the pressure portion 28. Since the width of the positioning arm 29 is smaller than the width of the pressure portion 28, the pressure surface 32 acts on the contact portion 33 of the elastic member 25 and pushes the contact portion 33 into the mounting opening 15, and the long sealing portion 34 and the short sealing portion 35 are gathered by the edge of the mounting opening 15, so that the long sealing portion 34 and the short sealing portion 35 are located between the inner wall of the mounting opening 15 and the pressure portion 28, and the pressure portion 28 squeezes the long sealing portion 34 and the short sealing portion 35, thereby enhancing the sealing performance between the mounting seat 24 and the mounting opening 15.

[0031] The elastic member 25 cooperates with the mounting seat 24, the middle part of the elastic member 25 is sleeved on the outside of the mounting seat 24, the two ends of the elastic member 25 are detachably connected to the fixing member 18, and the middle part of the elastic member 25 is driven by the pressure of the mounting seat 24 to enter the mounting port 15 for sealing.

[0032] The elastic member 25 is made of rubber material, the thickness of the retaining portion 37 is relatively thick, and the elasticity is relatively poor, while the thickness of the contact portion 33 and the connecting portion 36 are relatively thin, and the elasticity is relatively good. The elastic member 25 is composed of the contact portion 33 and the connecting portion 36 and the retaining portion 37 symmetrically arranged on both sides of the contact portion 33. The contact portion 33 is connected to the retaining portion 37 through the connecting portion 36. To be precise, the contact portion 33 is connected to the retaining portion 37 through the connecting portion 36 and the long sealing portion 34. The contact portion 33 is provided with a symmetrically arranged long sealing portion 34 and a short sealing portion 35, and a retaining hole 38 is formed in the middle of the contact portion 33 to cooperate with the pressure-applying portion 28.

[0033] The area of ​​the hole 38 is kept smaller than the area of ​​the pressure portion 28 , and the elastic member 25 needs to be stretched and then deformed to be installed in the installation groove 31 , while keeping the pressure surface 32 in contact with the contact portion 33 .

[0034] When the elastic member 25 is not installed in cooperation with the mounting seat 24, the long sealing portion 34 and the short sealing portion 35 are directly at the edge of the contact portion 33. When installed in the mounting opening 15, they need to be squeezed by the edge of the mounting opening 15, so that they are squeezed and contracted between the inner wall of the mounting opening 15 and the pressure-applying portion 28, thereby forming aFigure 14 , 15 status.

[0035] The holding part 37 is provided with symmetrically arranged sliding parts 39. The fixing part 18 is composed of a fixing plate 40 and fixing ends 41 symmetrically arranged on both sides of the fixing plate 40. A sliding groove 42 for cooperating with the sliding part 39 is provided in the middle of the fixing end 41. Through the cooperation of the sliding part 39 and the sliding groove 42, it can be realized that the holding part 37 will not move left and right or up and down. Then, through the cooperation of the positioning column 43 and the positioning hole 44, it is realized that the holding part 37 will not move back and forth, that is, the holding part 37 will not move in the sliding direction of the sliding part 39 and the sliding groove 42.

[0036] The holding part 37 is provided with a movable hole 45. A positioning column 43 is arranged in the movable hole 45. The fixing plate 40 is provided with a positioning hole 44 for cooperating with the positioning column 43. The positioning column 43 is provided with a first contact block 46, a second contact block 47 and a pulling rod 48. Elastic arms 49 connected to the inner wall of the movable hole 45 are arranged on the positioning column 43, the first contact block 46 and the second contact block 47.

[0037] The fixing plate 40 is further provided with a guiding groove 50 for cooperating with the positioning column 43. A guiding inclined surface 51 is arranged in the guiding groove 50. The positioning column 43 enters the positioning hole 44 through the guiding inclined surface 51.

[0038] Under normal circumstances, when the positioning column 43 is not installed in the positioning hole 44, at this time, the second contact block 47 contacts the inner wall of the movable hole 45. When the holding part 37 is installed on the fixing part 18, at this time, the second contact block 47 still contacts the inner wall of the movable hole 45. If it is necessary to limit the position of the holding part 37 by making the positioning column 43 enter the positioning hole 44, only need to push the pulling rod 48, so that the pulling rod 48 drives the positioning column 43, so that the positioning column 43 drives the elastic arm 49 to be deformed by force, so that the second contact block 47 is separated from the inner wall of the movable hole 45, drives the first contact block 46 to move, so that the positioning column 43 enters the positioning hole 44 under the guidance of the guiding inclined surface 51 in the guiding groove 50, so that the first contact block 46 contacts the inner wall of the movable hole 45, and makes the elastic arm 49 tilt towards the direction of the first contact block 46. When the second contact block 47 contacts the inner wall of the movable hole 45, the elastic arm 49 is inclined towards the second contact block 47. By pulling the elastic arm 49 to make it deformed by force and generate elastic potential energy, the positioning column 43 can be restricted in the positioning hole 44 by force, and the position of the holding part 37 on the fixing part 18 can be restricted.

[0039] The pressure piece 26 is hingedly connected to the fixed block 19, and the pressure piece 26 is connected to the fixed block 19 through a hinge 52. Positioning bolts 53 cooperating with the hinge 52 are provided on both sides of the pressure piece 26. The hinge 52 and the positioning bolts 53 are connected by a tension spring 54. One end of the pressure piece 26 cooperates with the first limit plate 16 for limiting position, and the other end cooperates with the second limit plate 17 for limiting position. The pressure piece 26 pushes the mounting seat 24 and drives the elastic piece 25 to move into the mounting port 15 through the mounting seat 24.

[0040] The hinge 52 is composed of a mounting post 55, a blocking post 56, a connecting post 57 and a rotating disk 58. The mounting post 55 is arranged in the fixing hole 20 of the fixing block 19. The fixing hole 20 may be a threaded hole, and the mounting post 55 may be provided with a thread that matches the threaded hole. One end of the tension spring 54 is mounted on the connecting post 57. The diameters of the rotating disk 58 and the blocking post 56 are larger than the diameter of the connecting post 57, so that the position of the tension spring 54 can be limited. In addition, a connecting rod 59 is provided on the positioning bolt 53. The connecting rod 59 is connected to the hinge 60, and the other end of the tension spring 54 is connected to the connecting rod 59.

[0041] The pressure member 26 is composed of a plate body 62 , one end of which is provided with a pulling plate 63 and a positioning plate 64 . A limiting undercut 65 is provided on the positioning plate 64 . A second positioning opening 66 cooperating with the second limiting protrusion 22 is formed between the limiting undercut 65 and the plate body 62 .

[0042] A hinged portion 60 is provided on both sides of the other end of the plate body 62, a strip hole 67 cooperating with the hinge 52 is provided in the middle of the hinged portion 60, a positioning bolt 53 is arranged on the hinged portion 60, an avoidance opening 68 is formed between the hinged portion 60 and the hinged portion 60, and a first positioning opening 61 cooperating with the first limiting protrusion 21 is provided on the hinged portion 60.

[0043] like Figure 17 As shown, the pressure member 26 in the S1 state is on the first limit plate 16 and the second limit plate 17, and is placed in the first positioning port 61 through the first limit protrusion 21, and the second limit protrusion 22 is placed in the second positioning port 66, and the tension spring 54 is in a stretched state at this time, so that the pressure member 26 is installed on the first limit plate 16 and the second limit plate 17 under the tension of the tension spring 54, and presses the mounting seat 24 at the lower end, so that the mounting seat 24 and the activated carbon plate 12 are pushed downward and stably installed in the mounting port 15.

[0044] The pressing member 26 in the S2 state needs to first pull the pressing member 26 in the S1 state in the direction of F1, so that the first limiting protrusion 21 is separated from the first positioning port 61, and the second limiting protrusion 22 is separated from the second positioning port 66, stretch the tension spring 54, and then rotate the pressing member 26 by 90° around the hinge member 52. Under the pulling of the tension spring 54, the hinge portion 60 is placed on the filter tube 5. Under the pulling force of the tension spring 54, the pressing member 26 is placed on the filter tube 5 under force, and the pressing member 26 will not collapse.

[0045] After the pressing member 26 in the S1 state rotates in the direction of F2, the mounting seat 24 and the activated carbon plate 12 are no longer pressed by the elastic member 25, and can be pushed out of the mounting port 15 under the elastic potential energy stored in the elastic member 25 itself and move upward a certain distance, facilitating the staff to take out the mounting seat 24 and the activated carbon plate 12.

[0046] Since the hinge member 52 is provided on the fixed block 19, but the position of the fixed block 19 remains unchanged, while the pressing member 26 can rotate around the hinge member 52, and since the hole provided on the hinge portion 60 is a strip-shaped hole 67, the relative position of the hinge member 52 in the strip-shaped hole 67 can be maintained, that is, when the position of the pressing member 26 is changed, the hinge member 52 can be located at different positions in the strip-shaped hole 67.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A domestic sewage discharge system, characterized in that: include: Primary treatment box; A secondary treatment tank connected to the primary treatment tank; A first treatment tank, wherein the first treatment tank and the secondary treatment tank are connected via a filter tube, an activated carbon plate is provided in the middle of the filter tube, a retaining assembly for fixing the activated carbon plate is provided on the filter tube, a mounting opening is provided on the filter tube, a first limiting plate, a second limiting plate and symmetrically arranged fixing members are provided on both sides of the mounting opening, and symmetrically arranged fixing blocks are provided at both ends of one of the fixing members, and fixing holes are provided on the fixing blocks; and a second treatment tank connected to the first treatment tank; Wherein, the retaining assembly includes: A mounting seat matched with the activated carbon board, wherein a mounting chamber for accommodating the activated carbon board is provided in the middle of the mounting seat, and the mounting seat and the activated carbon board are arranged in the mounting opening; An elastic member matched with the mounting seat, wherein the middle of the elastic member is sleeved outside the mounting seat, the two ends of the elastic member are detachably connected to the fixing member, and the middle part of the elastic member is driven to enter the mounting opening for sealing by the pressure of the mounting seat; And a pressure-applying piece is hingedly connected to the fixing block, wherein the pressure-applying piece is connected to the fixing block via a hinge.

2. The domestic sewage discharge system according to claim 1, characterized in that: The first limiting plate is provided with a first limiting protrusion, the second limiting plate is provided with a second limiting protrusion, the first limiting protrusion and the second limiting protrusion are both facing the same direction, and the first limiting protrusion is kept facing the second limiting plate.

3. The domestic sewage discharge system according to claim 2, characterized in that: The pressure piece is provided with positioning bolts cooperating with the hinge piece on both sides, and the hinge piece and the positioning bolt are connected by a tension spring, one end of the pressure piece cooperates with the first limit plate for limiting position, and the other end cooperates with the second limit plate for limiting position, the pressure piece pushes the mounting seat and drives the elastic piece to move into the mounting opening through the mounting seat, and the pressure piece is composed of a plate body, one end of the plate body is provided with a pulling plate and a positioning plate, and the positioning plate is provided with a limiting undercut, and a second positioning opening cooperating with the second limiting protrusion is formed between the limiting undercut and the plate body.

4. The domestic sewage discharge system according to claim 3, characterized in that: The other end of the plate body is provided with hinged parts on both sides, and a strip hole cooperating with the hinge is provided in the middle of the hinged part. The positioning bolt is arranged on the hinged part, and an avoidance opening is formed between the hinged part and the hinged part. The hinged part is provided with a first positioning opening cooperating with the first limiting protrusion.

5. The domestic sewage discharge system according to claim 1, characterized in that: The mounting seat is composed of a pressure portion and symmetrically arranged positioning arms, a mounting area is formed between the positioning arms, the mounting chamber is arranged in the middle of the pressure portion, a mounting groove is provided on one side of the connection between the positioning arm and the pressure portion, and the width of the positioning arm is smaller than the width of the pressure portion.

6. The domestic sewage discharge system according to claim 5, characterized in that: The elastic part consists of a contact part and a connecting part and a retaining part symmetrically arranged on both sides of the contact part. The contact part is connected to the retaining part through the connecting part. The contact part is provided with a symmetrically arranged long sealing part and a short sealing part. A retaining hole cooperating with the pressure-applying part is formed in the middle of the contact part.

7. The domestic sewage discharge system according to claim 6, characterized in that: The retaining part is provided with a symmetrically arranged sliding part, and the fixing member is composed of a fixing plate and fixed ends symmetrically arranged on both sides of the fixing plate, and a sliding groove cooperating with the sliding part is provided in the middle of the fixed end.

8. The domestic sewage discharge system according to claim 7, characterized in that: The retaining portion is provided with a movable hole, a positioning column is provided in the movable hole, a first contact block, a second contact block and a pulling rod are provided on the positioning column, and an elastic arm connected to the inner wall of the movable hole is provided on the positioning column, the first contact block and the second contact block.

9. The domestic sewage discharge system according to claim 8, characterized in that: The fixing plate is provided with a positioning hole matched with the positioning column.

10. The domestic sewage discharge system according to claim 9, characterized in that: The fixing plate is also provided with a guide groove matched with the positioning column, and a guide slope is provided in the guide groove, and the positioning column enters the positioning hole through the guide slope.

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