Rural sewage terminal grid well and installation method thereof

Abstract

The present invention provides a rural sewage terminal screen well and its installation method. The screen well comprises a prefabricated screen well, wherein a first slot and a second slot are symmetrically arranged on the inner sidewall of the prefabricated screen well. A coarse screen structure for primary sewage filtration is installed between the first slots, and a fine screen structure for secondary sewage filtration is installed between the second slots. A submerged screen for supporting filtered solid waste is hingedly connected to the bottom end of the coarse screen structure via a hinge. The submerged screen can rotate from parallel to the coarse screen structure to a horizontal plane with a maximum rotation angle of 90°. The use of this screen well and its installation method can effectively accelerate on-site construction efficiency, improve worker safety, and effectively resolve the problem of inconvenient waste removal from the screen well.

Description

Technical Field

[0001] The present invention relates to the technical field of rural sewage treatment, in particular to a rural sewage terminal grid well and an installation method thereof. Background Art

[0002] In rural sewage treatment projects, the construction of pipeline networks is to collect sewage, and the construction of integrated sewage treatment facilities is to treat sewage to meet discharge standards. The screen wells serve as the first "checkpoint" connecting the pipeline network to the integrated sewage treatment facilities. Their main function is to intercept floating objects or other garbage in the sewage, thereby protecting the water pumps and preventing pipe blockage. At present, most screen wells in rural sewage treatment projects are brick-built, with one or two screen meshes. This process has two disadvantages. First, the brick-built method is time-consuming and labor-intensive, increasing labor costs, and the working environment is a foundation pit, which poses certain safety risks. Second, the screen mesh only serves as an interception function and cannot be used to clear garbage. Summary of the Invention

[0003] In response to the above problems, the purpose of the present invention is to propose a rural sewage terminal grille well and its installation method. By using the grille well and its method, the on-site construction efficiency can be effectively accelerated, the workers' working safety can be improved, and the problem of inconvenience in cleaning garbage in the grille well can be effectively solved.

[0004] In order to achieve the above-mentioned technical features, the purpose of the present invention is achieved as follows: a rural sewage terminal grid well, which includes a prefabricated grid well, and a first card slot and a second card slot are symmetrically arranged on the inner side wall of the prefabricated grid well, a coarse grid structure for primary filtration of sewage is installed between the first card slots, and a fine grid structure for secondary filtration of sewage is installed between the second card slots; the bottom end of the coarse grid structure is hinged with a bottom grid for carrying solid waste after filtration through a hinge, and the maximum rotation angle of the bottom grid from the surface parallel to the coarse grid structure to the horizontal plane is 90°.

[0005] The prefabricated grid well is made of glass fiber reinforced plastic; the front and rear ends of the prefabricated grid well are provided with water inlets and water outlets according to actual conditions.

[0006] The coarse grille structure, fine grille structure and sunken grille adopt the same structure. The coarse grille structure includes a front frame and a rear frame assembled and connected by a detachable locking mechanism, and a coarse grille mesh is pressed between the front frame and the rear frame; wherein the aperture of the fine grille mesh installed on the fine grille structure is smaller than the aperture of the coarse grille mesh.

[0007] The detachable locking mechanism includes an L-shaped lock hole processed on the rear frame, and the L-shaped lock hole passes through the surface where the rear frame and the front frame are in contact and the top surface respectively; a fixing buckle is provided on the surface where the front frame and the rear frame are in contact, and the fixing buckle cooperates with the L-shaped lock hole on the surface where the rear frame is in contact, and a disassembly switch is vertically inserted into the L-shaped lock hole located on the top surface of the rear frame, and the bottom end of the disassembly switch cooperates with the fixing buckle to realize the locking between the front frame and the rear frame.

[0008] A right-angle buckle is provided at one of the top corners of the sunken grille, which cooperates with the automatic unlocking mechanism installed on the coarse grille structure and controls the automatic unlocking and unfolding of the sunken grille after it is lowered into place.

[0009] The automatic unlocking mechanism includes a bottom switch vertically slidably installed inside the front frame, the bottom end of the bottom switch extends out of the bottom end of the front frame, the top of the bottom switch is processed with a first inclined surface, the first inclined surface and the second inclined surface at the bottom end of the rotary valve form an inclined surface match, the rotary valve is hinged to the inner wall of the front frame by a fixing bolt; the rotary valve and the right-angle buckle form a hook limit match.

[0010] A support rod is fixed at the bottom corner of the sunken grille and away from the side where the hinge is located.

[0011] Pulleys are rotatably mounted on the side walls of the front frame and the rear frame, and the pulleys form a sliding fit with the corresponding first and second clamping slots.

[0012] A method for installing a rural sewage terminal grid well comprises the following steps:

[0013] Step 1: Installation of prefabricated grid well:

[0014] Dig the foundation pit according to the designed dimensions and install the prefabricated grid well inside the foundation pit;

[0015] Step 2: Assemble the coarse grid structure, fine grid structure and bottom grid:

[0016] Install the corresponding grille between the front frame and the rear frame and fix it with a detachable locking mechanism;

[0017] Step 3: Assemble and connect the bottom grille and the coarse grille structure:

[0018] Connect the sunken grille to the bottom of the coarse grille structure through a hinge and limit the rotation within 90 degrees;

[0019] Step 4: Initial locking of the bottom grille:

[0020] The sunken grille is directly locked with the automatic unlocking mechanism on the coarse grille structure through the right-angle buckle, so that the sunken grille is tightly attached to the coarse grille structure;

[0021] Step 5: Installation of the coarse grid structure inside the prefabricated grid well:

[0022] Place the coarse grille structure in the first slot. When the coarse grille structure is in place, the bottom switch moves upward after reaching the bottom, driving the first inclined surface. The first inclined surface cooperates with the second inclined surface, thereby driving the rotary valve to rotate in a directional manner. After the rotary valve rotates, the right-angle buckle is released. The solid bottom grille rotates downward under the action of its own weight. After rotating into place, the support rod touches the bottom to play a vertical support role.

[0023] Step 6: Installation of fine grid structure inside prefabricated grid well:

[0024] placing the fine grid structure in the second slot;

[0025] Step 7: Cleaning process;

[0026] Lift the coarse screen structure upwards. The pulleys on both sides of the coarse screen structure will reduce friction resistance and help to lift it quickly. The bottom screen is in the expanded state at this time, and the intercepted solid waste will be brought out together, thereby achieving the purpose of convenient cleaning.

[0027] The present invention has the following beneficial effects:

[0028] 1. By using the grille well and the method thereof, the on-site construction efficiency can be effectively accelerated, the operation safety of workers can be improved, and the problem of inconvenience in cleaning out the grille well garbage can be effectively solved.

[0029] 2. The coarse grid structure and the fine grid structure of the above structure have a filtering effect, and the bottom grid has an effect of carrying the solid waste after filtering.

[0030] 3. The above-mentioned detachable locking mechanism can conveniently realize locking and disassembly of the rear frame and the front frame, thereby facilitating the replacement of the grille.

[0031] 4. The automatic unlocking mechanism can be used to automatically unlock the sunken grille.

[0032] 5. The pulleys on both sides will reduce friction resistance and help to lift quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the accompanying drawings and examples.

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0035] Figure 2 This is a structural diagram of the prefabricated grid well of the present invention.

[0036] Figure 3 This is a structural diagram of the front and rear frames of the present invention.

[0037] Figure 4 This is a diagram showing the locking state of the coarse grille structure and the sunken bottom grille of the present invention.

[0038] Figure 5 This is a diagram of the unlocking process of the coarse grille structure and the bottom grille of the present invention.

[0039] Figure 6 This is a diagram of the coarse grid structure and the bottom grid of the present invention in a fully unfolded state.

[0040] Figure 7 This is a partial diagram of the automatic unlocking mechanism of the present invention.

[0041] Figure 8 This is a partial view of the detachable locking mechanism of the present invention.

[0042] In the figure: prefabricated grille well 1, water inlet 2, coarse grille structure 3, fine grille structure 4, front frame 5 and rear frame 6, coarse grille net 7, pulley 8, bottom switch 9, bottom grille 10, support rod 11, right-angle buckle 12, rotary valve 14, fixing buckle 15, L-shaped lock hole 16, disassembly switch 17, second slot 18, first slot 19, water outlet 20, hinge 21, fixing bolt 22, second inclined surface 23, and first inclined surface 24. DETAILED DESCRIPTION

[0043] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0044] Example 1:

[0045] See also Figure 1-8 A rural sewage terminal screen pit comprises a prefabricated screen pit 1, with a first slot 19 and a second slot 18 symmetrically arranged on the inner sidewall. A coarse screen structure 3 for primary sewage filtration is mounted between the first slots 19, and a fine screen structure 4 for secondary sewage filtration is mounted between the second slots 18. A bottom screen 10 for supporting filtered solid waste is hingedly connected to the bottom of the coarse screen structure 3 via a hinge 21. The bottom screen 10 can rotate from a plane parallel to the coarse screen structure 3 to a horizontal plane through a maximum angle of 90°. Using this screen pit and its associated method can effectively accelerate on-site construction efficiency, improve worker safety, and effectively resolve the inconvenience of cleaning waste from the screen pit.

[0046] Furthermore, the prefabricated grid well 1 is made of glass fiber reinforced plastics, and the front and rear ends of the prefabricated grid well 1 are provided with a water inlet 2 and a water outlet 20 according to actual conditions. The above-mentioned material enhances its durability.

[0047] Furthermore, the coarse grid structure 3, fine grid structure 4, and submerged grid 10 employ the same structure. The coarse grid structure 3 comprises a front frame 5 and a rear frame 6 assembled and connected by a detachable locking mechanism, with a coarse grid mesh 7 press-fitted between the front and rear frames 5 and 6. The fine grid mesh installed on the fine grid structure 4 has a smaller aperture than that of the coarse grid mesh 7. The coarse and fine grid structures 3 and 4 achieve a filtering effect, while the submerged grid 10 serves to support the filtered solid waste.

[0048] Furthermore, the detachable locking mechanism includes an L-shaped locking hole 16 machined on the rear frame 6. The L-shaped locking hole 16 extends through the surface of the rear frame 6 that contacts the front frame 5 and the top surface. The surface of the front frame 5 that contacts the rear frame 6 is provided with a fixing buckle 15. The fixing buckle 15 cooperates with the L-shaped locking hole 16 on the surface of the rear frame 6 that contacts the rear frame 6. A disassembly switch 17 is vertically inserted into the L-shaped locking hole 16 located on the top surface of the rear frame 6. The bottom end of the disassembly switch 17 cooperates with the fixing buckle 15 to achieve locking between the front frame 5 and the rear frame 6. The above-mentioned detachable locking mechanism can conveniently achieve locking and disassembly between the rear frame 6 and the front frame 5, thereby facilitating the replacement of the grille. Specifically, during the locking process, the fixing buckle 15 is inserted into the L-shaped locking hole 16. After the rear frame 6 and the front frame 5 are in contact, the disassembly switch 17 is inserted into the L-shaped locking hole 16, thereby locking the fixing buckle 15, thereby achieving the purpose of locking the rear frame 6 and the front frame 5. When it is necessary to release the lock of both, it is only necessary to unplug the disassembly switch 17 to release the lock of the fixing buckle 15, and then both can be unlocked.

[0049] Furthermore, a right-angle buckle 12 is provided at one of the top corners of the sunken grille 10, and the right-angle buckle 12 cooperates with the automatic unlocking mechanism installed on the coarse grille structure 3, and controls the automatic unlocking and unfolding of the sunken grille 10 after it is lowered into place.

[0050] Furthermore, the automatic unlocking mechanism includes a bottoming switch 9 that is vertically slidably installed inside the front frame 5. The bottom end of the bottoming switch 9 extends out of the bottom end of the front frame 5. The top end of the bottoming switch 9 is processed with a first inclined surface 24. The first inclined surface 24 forms an inclined surface with the second inclined surface 23 at the bottom end of the rotary valve 14. The rotary valve 14 is hinged to the inner wall of the front frame 5 by a fixing bolt 22. The rotary valve 14 forms a hook limit with the right-angle buckle 12. The above-mentioned automatic unlocking mechanism can be used to automatically release the lock of the sunken grille 10. During operation, when the coarse grille structure 3 is installed in place, the bottoming switch 9 moves upward after reaching the bottom, driving the first inclined surface 24. The first inclined surface 24 cooperates with the second inclined surface 23, thereby driving the rotary valve 14 to rotate in a certain direction. After the rotary valve 14 rotates, it releases the right-angle buckle 12, thereby loosening the sunken grille 10.

[0051] Furthermore, a support rod 11 is fixed to the bottom corner of the sinking grille 10 and away from the side where the hinge 21 is located. The support rod 11 is used to rotate downward under the weight of the sinking grille, and after rotating into place, the support rod touches the bottom to play a vertical supporting role.

[0052] Furthermore, pulleys 8 are rotatably mounted on the side walls of the front frame 5 and the rear frame 6, and the pulleys 8 form a sliding fit with the corresponding first slots 19 and second slots 18. The pulleys on both sides will reduce frictional resistance and help to quickly lift.

[0053] Furthermore, in order to prevent excessive garbage from tipping over during the lifting of the bottom grille 10, a traction connecting rope is provided between the bottom grille 10 and the coarse grille structure 3 to enhance the connection strength and reliability of the bottom grille 10.

[0054] Example 2:

[0055] A method for installing a rural sewage terminal grid well comprises the following steps:

[0056] Step 1: Installation of prefabricated grid well 1:

[0057] Dig a foundation pit according to the designed dimensions and install the prefabricated grid well 1 inside the foundation pit;

[0058] Step 2: Assembling the coarse grid structure 3, the fine grid structure 4 and the bottom grid 10:

[0059] Install the corresponding grille between the front frame 5 and the rear frame 6 and fix them with a detachable locking mechanism;

[0060] Step 3: Assembling and connecting the bottom grille 10 and the coarse grille structure 3:

[0061] The bottom grille 10 is connected to the bottom of the coarse grille structure 3 through a hinge 21 and is limited to rotate within 90 degrees;

[0062] Step 4: Preliminary locking of the bottom grille 10:

[0063] The sunken grille 10 is directly locked with the automatic unlocking mechanism on the coarse grille structure 3 through the right-angle buckle 12, so that the sunken grille 10 is tightly attached to the coarse grille structure 3;

[0064] Step 5: Installation of the coarse grid structure 3 inside the prefabricated grid well 1:

[0065] The coarse grid structure 3 is placed in the first slot 19. When the coarse grid structure 3 is in place, the bottom switch 9 moves upward after reaching the bottom, driving the first inclined surface 24. The first inclined surface 24 cooperates with the second inclined surface 23, thereby driving the rotary valve 14 to rotate in a directional manner. After the rotary valve 14 rotates, the right-angle buckle 12 is released. In this way, the bottom grid 10 rotates downward under the action of its own weight. After rotating into place, the support rod touches the bottom to play a vertical support role.

[0066] Step 6: Installation of the fine grid structure 4 inside the prefabricated grid well 1:

[0067] Place the fine grid structure 4 in the second slot 18;

[0068] Step 7: Cleaning process;

[0069] Lift the coarse grid structure 3 upwards, and the pulleys on both sides of the coarse grid structure 3 will reduce the friction resistance, which helps to lift it quickly. The bottom grid 10 is in the unfolded state at this time, and the intercepted solid waste will be taken out together, thereby achieving the purpose of convenient cleaning.

Claims

1. A rural sewage terminal grid well, characterized in that: It comprises a prefabricated grid well (1), wherein a first slot (19) and a second slot (18) are symmetrically arranged on the inner side wall of the prefabricated grid well (1), a coarse grid structure (3) for primary filtration of sewage is installed between the first slots (19), and a fine grid structure (4) for secondary filtration of sewage is installed between the second slots (18); the bottom end of the coarse grid structure (3) is hingedly connected to a bottom grid (10) for carrying solid waste after filtration via a hinge (21), and the maximum rotation angle of the bottom grid (10) from a plane parallel to the coarse grid structure (3) to a horizontal plane is 90°; The coarse grid structure (3) comprises a front frame (5) and a rear frame (6) which are assembled and connected via a detachable locking mechanism; A right-angle buckle (12) is provided at one of the top corners of the sunken grille (10), and the right-angle buckle (12) cooperates with an automatic unlocking mechanism installed on the coarse grille structure (3) and controls the automatic unlocking and unfolding of the sunken grille (10) after it is lowered into place; The automatic unlocking mechanism includes a bottoming switch (9) vertically slidably mounted inside the front frame (5), the bottom end of the bottoming switch (9) extends out of the bottom end of the front frame (5), the top end of the bottoming switch (9) is processed with a first inclined surface (24), the first inclined surface (24) and the second inclined surface (23) at the bottom end of the rotary valve (14) form an inclined surface match, the rotary valve (14) is hinged to the inner side wall of the front frame (5) through a fixing bolt (22); the rotary valve (14) and the right-angle buckle (12) form a hook limit match.

2. A rural sewage terminal grid well according to claim 1, characterized in that: The prefabricated grid well (1) is made of glass fiber reinforced plastic; the front and rear ends of the prefabricated grid well (1) are provided with a water inlet (2) and a water outlet (20) according to actual conditions.

3. The rural sewage terminal grid well according to claim 1, characterized in that: The coarse grid structure (3), the fine grid structure (4) and the bottom grid (10) adopt the same structure, and a coarse grid mesh (7) is pressed between the front frame (5) and the rear frame (6); wherein the aperture of the fine grid mesh installed on the fine grid structure (4) is smaller than the aperture of the coarse grid mesh (7).

4. A rural sewage terminal grid well according to claim 3, characterized in that: The detachable locking mechanism comprises an L-shaped locking hole (16) processed on the rear frame (6), the L-shaped locking hole (16) respectively penetrating the surface of the rear frame (6) and the front frame (5) and the top surface; the surface of the front frame (5) and the rear frame (6) that are in contact with each other is provided with a fixing buckle (15), the fixing buckle (15) cooperates with the L-shaped locking hole (16) on the surface of the rear frame (6) that are in contact with each other, and a disassembly switch (17) is vertically inserted into the L-shaped locking hole (16) on the top surface of the rear frame (6), the bottom end of the disassembly switch (17) cooperates with the fixing buckle (15) and realizes the locking between the front frame (5) and the rear frame (6).

5. The rural sewage terminal grid well according to claim 1, characterized in that: A support rod (11) is fixed to the bottom corner of the sunken grille (10) and on the side away from the hinge (21).

6. The rural sewage terminal grid well according to claim 1, characterized in that: Pulleys (8) are rotatably mounted on the side walls of the front frame (5) and the rear frame (6), and the pulleys (8) form a sliding fit with the corresponding first slots (19) and second slots (18).

7. The method for installing a rural sewage terminal grid well according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1, installation of prefabricated grid well (1): Dig a foundation pit according to the designed dimensions and install the prefabricated grid well (1) inside the foundation pit; Step 2: Assembling the coarse grid structure (3), the fine grid structure (4) and the bottom grid (10): Installing a corresponding grille between the front frame (5) and the rear frame (6) and securing them with a detachable locking mechanism; Step 3: Assembling and connecting the bottom grille (10) and the coarse grille structure (3): The bottom grille (10) is connected to the bottom of the coarse grille structure (3) via a hinge (21) and is limited to rotate within 90 degrees; Step 4: Initial locking of the bottom grille (10): The sunken grille (10) is directly locked with the automatic unlocking mechanism on the coarse grille structure (3) through the right-angle buckle (12), thereby making the sunken grille (10) close to the coarse grille structure (3); Step 5: Installation of the coarse grid structure (3) inside the prefabricated grid well (1): The coarse grid structure (3) is placed in the first slot (19). When the coarse grid structure (3) is installed in place, the bottom switch (9) moves upward after reaching the bottom, driving the first inclined surface (24). The first inclined surface (24) cooperates with the second inclined surface (23), thereby driving the rotary valve (14) to rotate in a directional manner. After the rotary valve (14) rotates, the right-angle buckle (12) is released. The solid bottom grid (10) rotates downward under the action of its own weight. After rotating into place, the support rod touches the bottom and plays a vertical supporting role. Step 6: Installation of the fine grid structure (4) inside the prefabricated grid well (1): placing the fine grid structure (4) in the second slot (18); Step 7: Cleaning process; The coarse grid structure (3) is lifted upwards, and the pulleys on both sides of the coarse grid structure (3) will reduce the friction resistance, which helps to quickly lift it up. The bottom grid (10) is now in an unfolded state, and the solid waste intercepted by it is taken out together, thereby achieving the purpose of convenient cleaning.

Images