A garden sewage treatment system

Abstract

The invention discloses a garden sewage treatment system, comprising a sedimentation tank and a filter tank which are arranged adjacent to each other, wherein the sedimentation tank and the filter tank are separated by a partition, wherein the middle part of the partition is arranged as a filter structure, wherein the bottom of the sedimentation tank is arranged as a collection chamber, wherein a baffle assembly is arranged in the filter tank, wherein the baffle assembly is slidably connected in a limiting assembly, wherein the limiting assembly comprises a first limiting assembly installed in the sedimentation tank and a second limiting assembly installed in the filter tank, wherein the first limiting assembly is arranged horizontally, and the second limiting assembly is arranged in an arc shape and is connected to the first limiting assembly; the present application separates the sediment in the collection chamber from the upper layer of liquid by moving the baffle assembly from the second limiting assembly to the first limiting assembly, and seals the sediment, thereby preventing the sediment from being driven by water flow to disperse in the water again and affecting the sedimentation effect of the sedimentation tank, thereby making the subsequent reaction with chemical agents to remove harmful substances more effective, thereby improving the wastewater treatment effect and efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment systems, and in particular to a garden sewage treatment system. Background Art

[0002] As my country's urbanization continues to increase, gardens have become an indispensable part of the beautiful landscape in the process of urban construction. Ecological gardens refer to a garden green space system built under the guidance of ecological principles. In this system, the ecological tribes composed of trees, shrubs, herbs, vines, etc., are coordinated with each other, with complex layers and appropriate seasonal colors. Plants with different ecological characteristics can be in their proper places, making full use of sunlight, air, land, nutrients, water, etc., to form a harmonious, orderly and stable community.

[0003] In the design process of ecological gardens, sewage treatment is an important project. Fountains, landscape pools, irrigation and other water in ecological gardens mainly use tap water, while sewage on rainy days is usually directly discharged into the municipal sewage pipes, which causes a great waste of water resources. At the same time, garden sewage has the special characteristics of containing phosphorus and nitrogen, and many microorganisms. If it enters the municipal sewage pipes without corresponding special treatment, it will cause serious harm to the environment.

[0004] The garden sewage purification treatment system in the prior art usually has the processes of large particle impurity filtration, static sedimentation, chemical agent reaction and adsorption. The sedimentation is to separate the solid and liquid in the wastewater to remove the gravel in the wastewater so that the liquid can better react with the chemical substances added in the subsequent process to remove the harmful substances in the wastewater. However, in the existing sewage treatment system, the upper layer of liquid is generally directly extracted and discharged after sedimentation. During the extraction process, the sediment at the bottom is easily driven by the flowing water flow, causing the wastewater to become turbid again, which reduces the effect of sedimentation and affects the wastewater treatment effect and efficiency. Based on such problems, the prior art needs to be further improved. Summary of the invention

[0005] In view of the shortcomings of the existing technology, a garden sewage treatment system is proposed, which solves the problem that in the sewage treatment system in the above-mentioned background technology, the upper liquid is directly extracted and discharged after sedimentation, and the sediment at the bottom is easily moved by the flowing water, causing the wastewater to become turbid again, affecting the wastewater treatment effect and efficiency.

[0006] To achieve the above objectives, the present invention proposes the following technologies to achieve the above objectives:

[0007] A garden sewage treatment system comprises a sedimentation tank and a filter tank which are arranged adjacent to each other, wherein the sedimentation tank and the filter tank are separated by a partition, the middle part of the partition is arranged as a filter structure, the bottom of the sedimentation tank is arranged as a collecting chamber, a baffle assembly is arranged in the filter tank, the baffle assembly is slidably connected in a limiting assembly, the limiting assembly comprises a first limiting assembly installed in the sedimentation tank and a second limiting assembly installed in the filter tank, the first limiting assembly is arranged horizontally, the second limiting assembly is arranged in an arc shape and is connected to the first limiting assembly, so that the baffle assembly reciprocates in the sedimentation tank and the filter tank.

[0008] Furthermore, the first limiting assembly is arranged above the collecting chamber and abuts against the bottom of the filter structure. The first limiting assembly and the second limiting assembly respectively include limiting stop bars fixed on the inner wall of the sedimentation tank and the inner wall of the filter tank, and a slide groove for the baffle assembly to slide is formed between the limiting stop bars.

[0009] Furthermore, the baffle assembly is made of plastic material, and includes a first baffle and a second baffle arranged below the first baffle. A first driving wheel and a second driving wheel are respectively arranged above the first baffle and below the second baffle. The first driving wheel and the second driving wheel respectively drive the first baffle and the second baffle to slide in the limiting assembly.

[0010] Furthermore, the first driving wheel and the second driving wheel are meshedly connected with the first baffle plate and the second baffle plate respectively, the first baffle plate and the second baffle plate are respectively provided with matching racks, and the first driving wheel and the second driving wheel are respectively fixed on the first driving shaft and the second driving shaft.

[0011] Furthermore, the first driving shaft and the second driving shaft are respectively rotatably connected to the inner wall of the filter tank and the ends thereof respectively pass through the filter tank to connect to the driving component. The driving component is fixed to the outside of the filter tank and respectively drives the first driving wheel and the second driving wheel to rotate forward and reversely to drive the first baffle and the second baffle to move in the limiting component.

[0012] Furthermore, the driving assembly includes a driven sprocket sleeved on the ends of the first driving shaft and the second driving shaft, and a driving sprocket drivingly connected to the driven sprocket, and the driving sprocket is rotatably connected to the segmented support shaft and driven to rotate by a driving motor.

[0013] Furthermore, the segmented support shaft includes a first support shaft, a second support shaft and a third support shaft which are spaced apart from each other, the first support shaft is fixed on the outer wall of the filter tank, the second support shaft and the third support shaft are both fixed on a support frame, the support frame is fixed on the filter tank, and sprocket mounting grooves are respectively arranged between the second support shaft and the first support shaft and between the third support shaft and the second support shaft.

[0014] Furthermore, a sliding rail is provided on the inner side of the driving sprocket, the sliding rail is distributed along the circumference of the inner wall of the driving sprocket, the sliding rail is installed in the sprocket installation groove, and the sliding rail slides in the sprocket installation groove to drive the driving sprocket to rotate.

[0015] Furthermore, two clamping blocks are relatively arranged on the inner side of the sliding rail, and clamping grooves are respectively opened on the sides of the clamping blocks close to each other. The clamping grooves are used to clamp the clamping blocks on the driving shaft. The driving shaft is located inside the segmented support shaft, and its rotation drives the clamping blocks and the active sprocket to rotate.

[0016] Furthermore, the card blocks are provided in two groups, and the distance between the two groups of card blocks is smaller than the distance between the two groups of connecting blocks, so that when one card block is plugged into one connecting block, the other card block is staggered with the other connecting block, so that the driving shaft drives any active sprocket to rotate.

[0017] Furthermore, the drive shaft is arranged at the output end of the drive motor, the drive motor is installed on the outside of the segmented support shaft, the drive motor is installed on the base plate through a mounting block, the mounting block is slidably connected to the base plate, a cylinder is arranged on the base plate, and the output end of the cylinder is fixedly connected to the mounting block.

[0018] Compared with the prior art, the comprehensive effects brought by the present invention include:

[0019] (1) The wastewater is passed into the sedimentation tank for static sedimentation. The wastewater can be filtered through the filter structure and enter the fan-shaped space surrounded by the baffle assembly in the filter tank, which increases the storage space of the sedimentation tank. The wastewater can be filtered when it is added, which is convenient for the precipitates in the wastewater to gather in the sedimentation tank for better sedimentation. The mobile baffle assembly moves from the second limit assembly to the first limit assembly to separate the sediment in the collection chamber from the upper liquid and seal the sediment, thereby preventing the water flow from driving the sediment to disperse in the water again and affecting the sedimentation effect of the sedimentation tank, thereby making the subsequent reaction with chemical agents to remove harmful substances more effective, thereby improving the wastewater treatment effect and efficiency.

[0020] (2) A separate first baffle and a second baffle are provided. After sedimentation is completed, the second baffle is first driven by the second driving wheel to slide at the bottom of the slide trough into the first limiting assembly to separate the sediment. At the same time, the first baffle also carries the upper liquid in the second limiting assembly in the filter tank, thereby further preventing the upper liquid from flowing out from the top as the baffle assembly moves, causing the water flow to drive the sediment that is not completely sealed to disperse, thereby improving the clarity of the upper liquid, reducing the sediment content in the wastewater after sedimentation, and improving the subsequent treatment effect.

[0021] (3) A plurality of support shafts form a segmented support shaft, and a driving sprocket is installed in a sprocket installation groove between two adjacent support shafts. Each support shaft is fixed by a support frame to ensure coaxiality, so that a driving motor can drive the driving sprocket to rotate from the inside of the support shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall external structure of Embodiment 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall internal structure of Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic top view of the overall internal structure of Example 1 of the present invention;

[0025] Figure 4 for Figure 3 Schematic diagram of the local structure at A in the middle;

[0026] Figure 5 It is a right side schematic diagram of the internal structure of the driving assembly of Example 1 of the present invention;

[0027] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0028] Figure 7 This is a front view schematic diagram of the external structure of the driving assembly of Example 1 of the present invention;

[0029] Figure 8 for Figure 2 Schematic diagram of the local structure at C in the middle;

[0030] Fig. 9 Schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0031] Fig.10 This is a schematic diagram of the overall structure of Example 3 of the present invention.

[0032] Legend: 1. Sedimentation tank; 2. Filtration tank; 3. Partition; 4. Filter structure; 5. Limiting bar; 6. First baffle; 7. Second baffle; 8. First driving wheel; 9. Second driving wheel; 10. Rack; 11. First driving shaft; 12. Second driving shaft; 13. Driven sprocket; 14. Driving sprocket; 15. Driving motor; 16. First supporting shaft; 17. Second supporting shaft; 18. Third supporting shaft; 19. Support frame; 20. Sprocket mounting groove; 21. Sliding rail; 22. Clamp block; 23. Driving shaft. DETAILED DESCRIPTION

[0033] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present invention.

[0034] In this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "top", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0035] Example 1

[0036] like Figures 1 to 8 As shown, a garden sewage treatment system includes a sedimentation tank 1 and a filter tank 2 which are adjacently arranged, wherein the sedimentation tank 1 and the filter tank 2 are separated by a partition 3, the middle part of the partition 3 is set as a filter structure 4, the bottom of the sedimentation tank 1 is set as a collecting chamber, and a baffle assembly is set in the filter tank 2, and the baffle assembly is slidably connected in the limit assembly, and the limit assembly includes a first limit assembly installed in the sedimentation tank 1 and a second limit assembly installed in the filter tank 2, the first limit assembly is horizontally arranged, and the second limit assembly is arc-shaped and connected to the first limit assembly, so that the baffle assembly reciprocates in the sedimentation tank 1 and the filter tank 2.

[0037] By setting a sedimentation tank 1 and a filter tank 2, in an initial state, the baffle assembly is located in the second limiting assembly in the filter tank 2, and wastewater is passed into the sedimentation tank 1 for static sedimentation. After the wastewater fills the collection chamber, continued addition of wastewater can be filtered through the filter structure 4 and enter the fan-shaped space surrounded by the baffle assembly in the filter tank 2. The above structure increases the accommodating space of the sedimentation tank 1, and can filter when adding wastewater, so that the precipitable matter in the wastewater is gathered in the sedimentation tank 1 for better precipitation, and the precipitate falls into the collection chamber. After the precipitation is completed, the baffle assembly is moved from the second limiting assembly to the first limiting assembly to separate the precipitate in the collection chamber from the upper liquid, and the precipitate is sealed, and then the upper liquid is discharged to avoid the water flow driving the precipitate to disperse in the water again and affect the precipitation effect of the sedimentation tank 1, thereby making the subsequent reaction with chemical agents to remove harmful substances more effective, thereby improving the wastewater treatment effect and efficiency.

[0038] Preferably, a multi-stage filter screen is also provided in the sedimentation tank 1 to filter the wastewater to be precipitated in stages, and the multi-stage filter screen is arranged above the filter screen structure 4 in the partition 3; a multi-stage filter screen is horizontally arranged at the bottom of the filter tank 2, and an adsorption component is arranged at the bottom of the filter tank 2, and chemical agents can be added into the filter tank 2 for reaction, and then filtered and adsorbed.

[0039] In the garden sewage treatment system of this embodiment, the first limiting assembly is arranged above the collecting chamber and abuts against the bottom of the filter structure 4. The first limiting assembly and the second limiting assembly respectively include limiting stop bars 5 fixed on the inner wall of the sedimentation tank 1 and the inner wall of the filter tank 2, and a slide groove for the baffle assembly to slide is formed between the limiting stop bars 5.

[0040] The above structure is provided to ensure that the baffle assembly moves into the first limiting assembly to effectively separate the collection chamber, thereby preventing the sediment from being driven by the water flow. The limiting stop bar 5 and the slide groove are provided to ensure the smooth sliding of the baffle assembly.

[0041] Specifically, in the initial state, the lower end of the baffle assembly is located at the junction of the first limit assembly and the second limit assembly, and its upper and lower ends are respectively abutted against the bottom end of the filter structure 4 and the side wall of the collecting chamber, thereby sealing the sedimentation tank 1 with the gap caused by the setting of the limit stop bar 5 on the partition 3.

[0042] Preferably, the filter structure 4 and the partition 3 of the side wall of the collection chamber are connected to the limit stop bar 5 and the baffle assembly, respectively, and steps matching the width of the limit stop bar 5 are provided to further ensure the sealing of the baffle assembly to the sedimentation tank 1 and ensure the sedimentation effect.

[0043] In the garden sewage treatment system of this embodiment, the baffle assembly is made of plastic material, including a first baffle 6 and a second baffle 7 arranged below the first baffle 6, and a first driving wheel 8 and a second driving wheel 9 are respectively arranged above the first baffle 6 and below the second baffle 7. The first driving wheel 8 and the second driving wheel 9 respectively drive the first baffle 6 and the second baffle 7 to slide in the limiting assembly.

[0044] Specifically, the baffle assembly is made of plastic material so that the first baffle 6 and the second baffle 7 can be either arc-shaped or horizontal, so that they can slide within the arc-shaped limit stop bar 5 of the second limit assembly and the horizontal limit stop bar 5 of the first limit assembly, so as to carry the liquid filtered by the filter mesh structure 4 and separate the sediment and the upper liquid.

[0045] Specifically, a separate first baffle 6 and a second baffle 7 are provided. After sedimentation is completed, the second driving wheel 9 first drives the second baffle 7 to slide at the bottom of the slide chute into the first limiting assembly to separate the sediment. At the same time, the first baffle 6 also carries the upper liquid in the second limiting assembly in the filter tank 2, thereby further avoiding the upper liquid flowing out from the top as the baffle assembly moves, causing the water flow to drive the sediment that is not completely sealed to disperse. After the second baffle 7 completely seals the collecting chamber, it drives the upper first baffle 6 to move along the slide chute into the sedimentation tank 1, so as to realize the release of the upper liquid completely separated from the sediment, improve the clarity of the upper liquid, reduce the sediment content in the wastewater after sedimentation, and improve the subsequent treatment effect.

[0046] In the garden sewage treatment system of this embodiment, the first driving wheel 8 and the second driving wheel 9 are respectively meshed and connected with the first baffle 6 and the second baffle 7, and the first baffle 6 and the second baffle 7 are respectively provided with matching racks 10, and the first driving wheel 8 and the second driving wheel 9 are respectively fixed on the first driving shaft 11 and the second driving shaft 12.

[0047] Preferably, the first driving wheel 8 and the second driving wheel 9 are respectively arranged at the bottom end of the second limiting assembly, so as to ensure that the engagement with the rack 10 can drive the baffle assembly to slide to the end in the first limiting assembly, thereby ensuring the sealing effect of the baffle assembly on the collection chamber.

[0048] In the garden sewage treatment system of this embodiment, the first driving shaft 11 and the second driving shaft 12 are respectively rotatably connected to the inner wall of the filter tank 2 and the ends thereof respectively pass through the filter tank 2 to connect the driving component. The driving component is fixed to the outside of the filter tank 2 and respectively drives the first driving wheel 8 and the second driving wheel 9 to rotate forward and reversely to drive the first baffle 6 and the second baffle 7 to move in the limiting component.

[0049] Specifically, the first drive shaft 11 and the second drive shaft 12 are respectively sealed and connected to the side walls of the filter tank 2. The specific structure thereof refers to the prior art. The second drive wheel 9 is located in the filter tank 2, so its rotation will not affect the wastewater in the sedimentation tank 1, thereby reducing the influence of the water flow on the sediment.

[0050] In the garden sewage treatment system of this embodiment, the driving assembly includes a driven sprocket 13 mounted on the ends of the first driving shaft 11 and the second driving shaft 12, and a driving sprocket 14 transmission-connected to the driven sprocket 13, and the driving sprocket 14 is rotatably connected to the segmented support shaft and driven to rotate by a driving motor 15.

[0051] Specifically, the driven sprocket 13 and the driving sprocket 14 are connected by a chain, the driven sprocket 13 on the first driving shaft 11 is located on the inner side, and the two driven sprockets 13 are arranged at intervals to avoid chain interference.

[0052] In the garden sewage treatment system of this embodiment, the segmented support shaft includes a first support shaft 16, a second support shaft 17 and a third support shaft 18 which are arranged at intervals from each other, the first support shaft 16 is fixed on the outer wall of the filter tank 2, the second support shaft 17 and the third support shaft 18 are both fixed on a support frame 19, the support frame 19 is fixed on the filter tank 2, and sprocket mounting grooves 20 are respectively arranged between the second support shaft 17 and the first support shaft 16, and between the third support shaft 18 and the second support shaft 17.

[0053] Specifically, multiple support shafts form a segmented support shaft, and the driving sprocket 14 is installed in the sprocket installation groove 20 between two adjacent support shafts. Each support shaft is fixed by a support frame 19 to ensure coaxiality, so that the driving motor 15 can drive the driving sprocket 14 to rotate from the inside of the support shaft.

[0054] In the garden sewage treatment system of this embodiment, a sliding rail 21 is provided on the inner side of the driving sprocket 14. The sliding rail 21 is distributed along the circumference of the inner wall of the driving sprocket 14. The sliding rail 21 is installed in the sprocket mounting groove 20. The sliding rail 21 slides in the sprocket mounting groove 20 to drive the driving sprocket 14 to rotate.

[0055] Preferably, both ends of the second support shaft 17 are smooth end surfaces, and the ends of the first support shaft 16 and the third support shaft 18 close to the second support shaft 17 are also smooth end surfaces. The two sides of the sliding rail 21 are set to a concave shape matching the smooth end surfaces, ensuring that the driving sprocket 14 can rotate smoothly on the segmented support shaft through the sliding rail 21.

[0056] In the garden sewage treatment system of this embodiment, two clamping blocks 22 are relatively arranged on the inner side of the sliding rail 21, and clamping grooves are respectively provided on the sides of the clamping blocks 22 close to each other. The clamping grooves are used to clamp the clamping blocks on the driving shaft 23. The driving shaft 23 is located inside the segmented support shaft, and its rotation drives the clamping blocks 22 and the active sprocket 14 to rotate.

[0057] Specifically, the drive shaft 23 located inside the segmented support shaft and coaxial with the drive shaft 23 is matched with the clamping block 22 through the clamping block, thereby transmitting its own rotation and then driving the sliding rail 21 and the driving sprocket 14 to rotate.

[0058] Preferably, the card blocks are provided in two groups, and the distance between the two groups of card blocks is smaller than the distance between the two groups of card blocks 22, so that when one card block is plugged into one card block 22, the other card block is staggered with the other card block 22, so that the driving shaft 23 drives any active sprocket 14 to rotate.

[0059] Through the above-mentioned setting, the depth of the drive shaft 23 inserted into the segmented support shaft is adjusted, and the clamping block on the drive shaft 23 is controlled to engage with different clamping blocks 22, thereby driving different active sprockets 14 to rotate, and then driving the first baffle 6 or the second baffle 7 to move separately through the sprocket transmission structure to seal the collection chamber or release the upper liquid into the filter tank 2.

[0060] In the garden sewage treatment system of this embodiment, the drive shaft 23 is arranged at the output end of the drive motor 15, the drive motor 15 is installed on the outside of the segmented support shaft, the drive motor 15 is installed on the base plate through a mounting block, the mounting block is slidably connected to the base plate, a cylinder is arranged on the base plate, and the output end of the cylinder is fixedly connected to the mounting block.

[0061] The cylinder is set to be telescopic and drive the driving motor 15 to slide on the bottom plate through the mounting block to change the insertion distance of the driving shaft 23 in the segmented support shaft, so that the clamping block on the driving shaft 23 is clamped with the clamping block 22 of different active sprockets 14 in the segmented support shaft to drive the rotation.

[0062] Example 2

[0063] like Fig. 9 As shown, other structures in this embodiment are the same as those in Example 1. In addition, the second limiting component of this embodiment includes an arc segment and a straight line segment on the top of the arc segment. Through the above-mentioned arrangement, the volume of wastewater contained by the sedimentation tank 1 and the limiting component can be increased, thereby further improving the wastewater treatment efficiency of the present invention.

[0064] Example 3

[0065] like Fig.10 As shown, other structures in this embodiment are the same as those in Example 1. In addition, two groups of sedimentation tanks 1 and filtration tanks 2 are symmetrically arranged in this embodiment. The two groups of treatment systems are arranged adjacent to each other. When the amount of wastewater is large, the wastewater flow direction can be quickly switched to make the wastewater flow into different sedimentation tanks 1 to adapt to the situation of large-scale wastewater treatment and improve practicality.

[0066] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "rotation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0067] Although the embodiments of the present invention have been shown and described in detail, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A garden sewage treatment system, characterized in that: It comprises a sedimentation tank and a filter tank which are arranged adjacently, wherein the sedimentation tank and the filter tank are separated by a partition, wherein the middle part of the partition is arranged as a filter structure, wherein the bottom of the sedimentation tank is arranged as a collection chamber, wherein a baffle assembly is arranged in the filter tank, wherein the baffle assembly is slidably connected in a limiting assembly, wherein the limiting assembly comprises a first limiting assembly installed in the sedimentation tank and a second limiting assembly installed in the filter tank, wherein the first limiting assembly is arranged horizontally, and the second limiting assembly is arranged in an arc shape and connected to the first limiting assembly, so that the baffle assembly reciprocates in the sedimentation tank and the filter tank; The first limiting assembly is arranged above the collecting chamber and abuts against the bottom of the filter structure. The first limiting assembly and the second limiting assembly respectively include limiting stop bars fixed on the inner wall of the sedimentation tank and the inner wall of the filter tank, and a slide groove for the baffle assembly to slide is formed between the limiting stop bars; The baffle assembly is made of plastic material, and includes a first baffle and a second baffle arranged below the first baffle, a first driving wheel and a second driving wheel are respectively arranged above the first baffle and below the second baffle, and the first driving wheel and the second driving wheel respectively drive the first baffle and the second baffle to slide in the limiting assembly; The first driving wheel and the second driving wheel are meshed and connected with the first baffle and the second baffle respectively, the first baffle and the second baffle are respectively provided with matching racks, and the first driving wheel and the second driving wheel are respectively fixed on the first driving shaft and the second driving shaft; The first driving shaft and the second driving shaft are respectively rotatably connected to the inner wall of the filter tank and the ends thereof respectively penetrate the filter tank to connect the driving assembly, and the driving assembly is fixed to the outside of the filter tank and respectively drives the first driving wheel and the second driving wheel to rotate forward and reversely to drive the first baffle plate and the second baffle plate to move in the limiting assembly; The driving assembly includes a driven sprocket sleeved on the ends of the first driving shaft and the second driving shaft, and a driving sprocket drivingly connected to the driven sprocket, wherein the driving sprocket is rotatably connected to the segmented support shaft and driven to rotate by a driving motor; The segmented support shaft includes a first support shaft, a second support shaft and a third support shaft which are spaced apart from each other, the first support shaft is fixed on the outer wall of the filter tank, the second support shaft and the third support shaft are both fixed on a support frame, the support frame is fixed on the filter tank, and sprocket mounting grooves are respectively arranged between the second support shaft and the first support shaft and between the third support shaft and the second support shaft.

2. A garden sewage treatment system according to claim 1, characterized in that: A sliding rail is arranged on the inner side of the driving sprocket. The sliding rail is distributed along the circumference of the inner wall of the driving sprocket. The sliding rail is installed in the sprocket installation groove. The sliding rail slides in the sprocket installation groove to drive the driving sprocket to rotate.

3. A garden sewage treatment system according to claim 2, characterized in that: Two clamping blocks are arranged opposite to each other on the inner side of the sliding rail, and clamping grooves are respectively provided on the sides of the clamping blocks close to each other. The clamping grooves are used to clamp the clamping blocks on the driving shaft. The driving shaft is located inside the segmented support shaft, and its rotation drives the clamping blocks and the active sprocket to rotate.

4. A garden sewage treatment system according to claim 3, characterized in that: The clamping blocks are provided in two groups, and the distance between the two groups of clamping blocks is smaller than the distance between the two groups of connecting blocks, so that when one clamping block is plugged into one connecting block, the other clamping block is staggered with the other connecting block, so that the driving shaft drives any active sprocket to rotate.

5. A garden sewage treatment system according to claim 4, characterized in that: The driving shaft is arranged at the output end of the driving motor, the driving motor is installed on the outside of the segmented support shaft, the driving motor is installed on the base plate through a mounting block, the mounting block is slidably connected to the base plate, a cylinder is arranged on the base plate, and the output end of the cylinder is fixedly connected to the mounting block.

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