A rural sewage grating well

Abstract

The utility model discloses a rural sewage grating well relates to sewage treatment device technical field, include: well body, the inside wall of well body both sides is equipped with water inlet and water outlet, is equipped with the annular flange at the water inlet, and the detachable installation of flange has the mesh bag, and the opening of mesh bag covers water inlet, and the opening edge of mesh bag is connected with flange, flange includes fixed part and movable part, and fixed part is fixedly connected with the inside wall of well body, and one end of fixed part is equipped with connecting piece, and movable part is located above fixed part, and one end of movable part is rotatably connected with the one end of fixed part away from connecting piece, and the other end is connected with connecting piece. The butt joint of mesh bag and water outlet ensures that sewage flows out after being filtered through mesh bag, effectively intercepts sundries, and mesh bag is detachably installed on flange, and the rotary connection of movable part and fixed part cooperates with connecting piece, so that flange is convenient to dismount, thereby making mesh bag convenient to operation and maintenance replacement, reducing the labor intensity of operation and maintenance personnel, and improving the operation and maintenance convenience of rural sewage treatment facilities.

Description

Technical Field

[0001] This utility model relates to the field of sewage treatment devices, and in particular to a rural sewage grit well. Background Technology

[0002] In rural sewage treatment, the filter screens of sewage bar screens are key components for intercepting debris and need to be replaced regularly to ensure the operation of the facility. However, the replacement operation currently faces significant inconveniences. Rural bar screens are mostly simple brick or concrete structures, and the filter screens are often fixed by hanging, binding, or bolting. When replacing them, maintenance personnel must go down into the screen to operate. The space inside the screen is small and filled with sewage odors and accumulated debris, creating a harsh environment. At the same time, personnel need to manually untie the ropes or unscrew the fixing bolts, making the process cumbersome and labor-intensive, and it is often difficult for a single person to complete the task independently. Utility Model Content

[0003] To improve the convenience of replacing the mesh bag of rural sewage grating wells, this application provides a rural sewage grating well.

[0004] The technical solution for a rural sewage grit well provided in this application is as follows: A rural sewage grit well includes: a well body, with an inlet and an outlet respectively provided on the inner walls of both sides of the well body; an annular flange is provided at the inlet; a mesh bag is detachably installed on the flange, the opening of the mesh bag covers the inlet, and the edge of the opening of the mesh bag is connected to the flange; the flange includes a fixed part and a movable part; the fixed part is fixedly connected to the inner wall of the well body; a connector is provided at one end of the fixed part; the movable part is located above the fixed part; one end of the movable part is rotatably connected to the end of the fixed part away from the connector, and the other end is connected to the connector.

[0005] By adopting the above technical solution, the connection between the mesh bag and the outlet ensures that sewage flows out after being filtered by the mesh bag, effectively intercepting debris. The mesh bag can be detachably installed on the flange, and the rotating connection between the movable part and the fixed part makes the flange easy to disassemble and assemble, thereby making the mesh bag easy to maintain and replace, reducing the labor intensity of maintenance personnel, and improving the convenience of operation and maintenance of rural sewage treatment facilities.

[0006] Optionally, the connector includes a movable part and a plug. The movable part is disposed on the movable part, and the plug is disposed on the fixed part. The movable part and the plug are provided with a through hole. A pin is inserted through the through hole of the movable part. Limiting rings are sleeved at both ends of the pin. The side of the pin near the fixed part extends into the through hole of the plug.

[0007] By adopting the above technical solution, the insertion and removal of the pin is simple, and a single person can quickly complete the unlocking and locking, reducing the labor intensity of operation and maintenance. The pin passes through the through hole to lock the moving part and the fixed part, and the limit ring prevents the pin from falling off. Under the action of external forces such as sewage impact and debris collision, the net bag will not come off by itself, avoiding the problem of easy loosening of traditional fixing methods.

[0008] Optionally, a hook is provided on the upper part of the well body wall, and a pull rope is connected to the opening of the net bag, with one end of the pull rope sleeved on the hook.

[0009] By adopting the above technical solution, when it is necessary to replace the net bag for cleaning, simply open the flange and pull the rope to remove the net bag from the flange. One end of the rope is set on a hook near the wellhead, so personnel can retrieve the rope without going down into the well. After the net bag is replaced and cleaned, the rope of the net bag is put back on the hook.

[0010] Optionally, it also includes a control rod, the lower end of which is hinged to the pin, and a well cover is provided on the top of the well body, with the upper end of the control rod connected to the bottom of the well cover.

[0011] By adopting the above technical solution, the control rod extends the pin operation to the wellhead position, eliminating the need for downhole operation. The pin can be unlocked or locked simply by holding the control rod above the well body, reducing the risk of maintenance personnel coming into contact with sewage and harsh environments and improving operational safety.

[0012] Optionally, the manhole cover has a through groove, the length of which is parallel to the cross-section of the water inlet. The upper surface of the manhole cover has a recessed receiving groove on one side of the through groove, which is connected to the through groove. The upper end of the control rod passes through the through groove, and the upper end of the control rod has a handle located in the receiving groove.

[0013] By adopting the above technical solution, when the flange is closed, the handle of the control rod is placed in the receiving groove, preventing the handle from protruding and affecting the normal closing of the manhole cover or causing personnel to be bumped, while also protecting the handle from damage. When the flange needs to be opened, the handle can be removed from the receiving groove, and the control rod can be held to operate the latch.

[0014] Optionally, both the fixed part and the movable part are provided with mounting grooves, and the opening edge of the net bag is provided with a mounting ring, which is located in the mounting groove.

[0015] By adopting the above technical solution, the mounting grooves of the fixed part and the movable part cooperate with the mounting ring of the net opening to form a ring-shaped fixation of the net edge, so that the net opening edge is evenly stressed and avoids excessive local stress that could cause the net to tear; the mounting ring embedded in the mounting groove can quickly locate the net installation position, improve the efficiency of disassembly and assembly, and at the same time protect the net edge from direct friction damage, extending the service life of the net.

[0016] Optionally, the mounting grooves are respectively formed on the inner side of the fixed part and the movable part, and the mounting grooves of the fixed part and the movable part are arranged in a ring and communicate with each other.

[0017] By adopting the above technical solution, the installation groove is opened on the inner side of the fixed part and the movable part and is interconnected, forming a complete annular fixing space. The impact of sewage entering the well body at the inlet on the net bag cannot push the installation ring out of the installation groove, ensuring that the installation ring can fit the installation groove around the entire circumference, further improving the stability and sealing of the net bag fixing.

[0018] Optionally, the mounting ring is made of thermoplastic elastomer.

[0019] By adopting the above technical solution, the mounting ring made of thermoplastic elastomer has both good elasticity and weather resistance. The elastic mounting ring can fit tightly against the inner wall of the mounting groove, enhancing the connection sealing and firmness, and accommodating slight dimensional errors during installation. The weather resistance makes it less prone to aging, swelling and cracking in humid environments, thus extending the service life of the mounting ring, reducing the problem of net bag loosening due to mounting ring failure, and reducing the frequency and cost of maintenance and replacement.

[0020] In summary, this application includes at least one of the following beneficial effects: 1. When maintenance personnel replace the net bag, they do not need to go down into the well. They can complete the entire process by operating from the wellhead. The lower end of the control rod is hinged to the pin, and the upper end extends to the wellhead and connects to the well cover. Maintenance personnel only need to hold the control rod handle above the well body to complete the unlocking and locking of the pin. There is no need to come into contact with sewage, odors and debris inside the well.

[0021] 2. After the moving part and the fixed part of the flange are closed, the pin passes through the through hole of the moving part and the plug, and the limiting rings sleeved at both ends of the pin can prevent the pin from falling off. Even under the external force of sewage flow impact or debris collision, the flange will not loosen, thus preventing the net bag from falling off. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a rural sewage grate well in an embodiment of this application.

[0023] Figure 2 This is a cross-sectional view of a rural sewage grate well according to an embodiment of this application.

[0024] Figure 3 This is a schematic diagram of the flange and mesh bag in the embodiments of this application.

[0025] Figure 4 This is a schematic diagram of the flange structure in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the structure of the manhole cover and control rod in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Well body; 101. Inlet; 102. Outlet; 11. Hook; 12. Well cover; 1201. Through groove; 1202. Receiving groove; 2. Flange; 201. Mounting groove; 21. Fixed part; 22. Moving part; 23. Connector; 231. Moving part; 232. Insert; 233. Pin; 234. Limit ring; 3. Net bag; 31. Drawstring; 32. Mounting ring; 4. Control lever; 41. Handle. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a rural sewage grit well, with reference to... Figure 1 and 2 The system includes a well body 1, which has a loading space. The inner walls of opposite sides of the well body 1 are respectively provided with an inlet 101 and an outlet 102. A flange 2 is installed at the inlet 101, and a mesh bag 3 is installed on the flange 2. The opening of the mesh bag 3 covers the inlet 101, and the mesh bag 3 is located within the loading space. By installing the mesh bag 3 at the flange 2 at the inlet 101, the wastewater is filtered by the mesh bag 3 before entering the well body 1, effectively intercepting debris and preventing it from entering the well body 1 and downstream pipes. The mesh bag 3, located within the loading space of the well body 1, does not obstruct the wastewater flow path and effectively collects the intercepted debris, facilitating subsequent cleaning of the wastewater screen well.

[0030] Reference Figure 3 and 4Flange 2 is annular, comprising a semi-annular fixed part 21 and a semi-annular movable part 22. The fixed part 21 is fixedly connected to the inner wall of the well body 1, and a connector 23 is provided at one end of the fixed part 21. The movable part 22 is located above the fixed part 21, with one end connected to the connector 23 and the other end rotatably connected to the end of the fixed part 21 away from the connector 23. Both the fixed part 21 and the movable part 22 are provided with mounting grooves 201, which are formed on the inner annular sides of the fixed part 21 and the movable part 22. The mounting grooves 201 of the fixed part 21 and the movable part 22 are arranged annularly and interconnected. The combination of the semi-annular fixed part 21 and the movable part 22 allows the flange 2 to open and close through the rotation of the movable part 22. Combined with the locking of the connector 23, this ensures the stability of the net bag 3 installation and provides operating space for the net bag 3 to be placed and removed. The interconnected annular mounting grooves 201 form a complete fixing space, ensuring uniform force on the edge of the net bag 3 and improving fixing reliability and sealing performance.

[0031] Reference Figure 3 An installation ring 32 is provided at the opening edge of the mesh bag 3, and the installation ring 32 is located in the installation groove 201. The structure of the installation ring 32 embedded in the installation groove 201 realizes the quick positioning and tight connection between the mesh bag 3 and the flange 2, and prevents the mesh bag 3 from shifting under the impact of sewage; the installation ring 32 provides reinforced support for the opening edge of the mesh bag 3, reduces tearing caused by concentrated force on the mesh bag 3, extends the service life of the mesh bag 3, and simplifies the disassembly and assembly process of the mesh bag 3 and the flange 2.

[0032] Reference Figure 3 and 4 The connector 23 includes a movable part 231 and a plug 232. The movable part 231 is disposed on the movable part 22, and the plug 232 is disposed on the fixed part 21. Both the movable part 231 and the plug 232 have through holes, which are connected when the movable part 22 and the fixed part 21 are closed. A pin 233 passes through the through hole of the movable part 231. Each end of the pin 233 is fitted with a limiting ring 234. The distance between the two limiting rings 234 is the distance that the pin 233 can slide in the movable part 231. The lower end of the pin 233 can extend into the through hole of the plug 232. After the through holes of the movable part 231 and the plug 232 are aligned, the pin 233 is inserted to lock the movable part 22 and the fixed part 21. The structure is simple. The limiting ring 234 limits the sliding range of the pin 233, preventing the pin 233 from falling off or being over-inserted, ensuring that the flange 2 will not open on its own under the action of external forces such as sewage impact and debris collision, and preventing the net bag 3 from falling off; the sliding design of the pin 233 makes the unlocking operation convenient and can be completed quickly by a single person, reducing the difficulty of operation and maintenance.

[0033] In a preferred embodiment, refer to Figure 2The upper part of the inner wall of the well body 1 is equipped with a hook 11, and a pull rope 31 is connected to the mounting ring 32. One end of the pull rope 31 is sleeved on the hook 11. When replacing the net bag 3, after opening the flange 2, the net bag 3 can be pulled to the well opening by pulling the pull rope 31. There is no need to go down into the well to operate, which reduces the contact between personnel and sewage and debris in the well. At the same time, the pull rope 31 facilitates the positioning and installation of the net bag 3, improving the replacement efficiency.

[0034] In a preferred embodiment, refer to Figure 1 and 5 It also includes a control rod 4, the lower end of which is hinged to a pin 233. A manhole cover 12 is provided on the top of the loading space. A through groove 1201 is provided through the manhole cover 12. The length direction of the through groove 1201 is parallel to the cross section of the water inlet 101. Multiple through grooves 1201 are provided at parallel intervals. A receiving groove 1202 is recessed on the upper surface of the manhole cover 12 near the water inlet 101. The receiving groove 1202 is connected to the through groove 1201 and its length direction is perpendicular to the length direction of the through groove 1201. The upper end of the control rod 4 extends out from the through groove 1201. A handle 41 is provided on the upper end of the control rod 4. The handle 41 is perpendicular to the length direction of the control rod 4. When the movable part 22 and the fixed part 21 are closed, the handle 41 is located in the receiving groove 1202. The control lever 4 extends the operation of the pin 233 to the wellhead, allowing maintenance personnel to insert and remove the pin 233 from outside the well via the handle 41, completely eliminating the need for downhole operations. The through groove 1201 provides movement space for the control lever 4, adapting to the sliding trajectory of the pin 233 to ensure smooth operation. The receiving groove 1202 stores the handle 41 when not in operation, preventing the handle 41 from protruding and affecting the closing of the well cover 12 or causing bumps, while also protecting the handle 41 from damage, thus balancing operational convenience and safety.

[0035] In a preferred embodiment, the mounting ring 32 is made of a thermoplastic elastomer. The thermoplastic elastomer combines elasticity and weather resistance. Its elasticity allows it to fit tightly against the inner wall of the mounting groove 201, accommodating slight dimensional errors during installation and enhancing the connection's sealing and firmness. Its weather resistance ensures that it is not prone to aging, swelling, or cracking in the humid and debris-filled environment inside the well, extending the service life of the mounting ring 32, reducing the loosening of the net bag 3 due to the failure of the mounting ring 32, and lowering the frequency and cost of maintenance and replacement.

[0036] The implementation principle of a rural sewage grit well according to an embodiment of this application is as follows: When it is necessary to clean the debris and garbage in the net bag 3, the well cover 12 is opened and the handle 41 is taken out from the receiving groove 1202. The handle 41 is pulled upward, and the control rod 4 drives the pin 233 to disengage from the through hole in the plug 232. The handle 41 is pulled up to make the movable part 22 rotate. The upper part of the mounting ring 32 disengages from the mounting groove 201 of the movable part 22. At this time, the pull rope 31 at the hook 11 is pulled upward, and the lower part of the mounting ring 32 disengages from the mounting groove 201 of the fixed part 21. The entire net bag 3 can be taken out from the well body 1 by pulling the rope 31. After cleaning, use a long clamp to hold the mounting ring 32 and install it in the mounting groove 201 of the fixing part 21. Put the pull rope 31 on the hook 11, put the manhole cover 12 and handle 41 back in place, and the pin 233 re-enters the plug 232. Under the action of gravity, the moving part 22 presses the mounting ring 32 into the flange 2.

[0037] The above are all preferred embodiments of this application. These embodiments are merely explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A rural sewage grit well, characterized in that, include: The well body (1) has an inlet (101) and an outlet (102) on its inner walls on both sides. An annular flange (2) is provided at the inlet (101). A net bag (3) is detachably installed on the flange (2). The opening of the net bag (3) covers the inlet (101). The edge of the opening of the net bag (3) is connected to the flange (2). The flange (2) includes a fixed part (21) and a movable part (22). The fixed part (21) is fixedly connected to the inner wall of the well body (1). One end of the fixed part (21) is provided with a connector (23). The movable part (22) is located above the fixed part (21). One end of the movable part (22) is rotatably connected to the end of the fixed part (21) away from the connector (23), and the other end is connected to the connector (23).

2. The rural sewage screen well according to claim 1, characterized in that: The connector (23) includes a movable part (231) and a plug (232). The movable part (231) is disposed on the movable part (22), and the plug (232) is disposed on the fixed part (21). The movable part (231) and the plug (232) are provided with through holes. A pin (233) is provided in the through hole of the movable part (231). Limiting rings (234) are sleeved at both ends of the pin (233). The side of the pin (233) near the fixed part (21) extends into the through hole of the plug (232).

3. A rural sewage screen well according to claim 2, characterized in that: The upper part of the inner wall of the well body (1) is provided with a hook (11), and the opening of the net bag (3) is connected to a pull rope (31), one end of the pull rope (31) is sleeved on the hook (11).

4. A rural sewage grit well according to claim 3, characterized in that: It also includes a control rod (4), the lower end of which is hinged to the pin (233), and a well cover (12) is provided on the top of the well body (1), with the upper end of the control rod (4) connected to the bottom of the well cover (12).

5. A rural sewage grit well according to claim 4, characterized in that: The manhole cover (12) has a through groove (1201) that extends through it. The length of the through groove (1201) is parallel to the cross section of the water inlet (101). The upper surface of the manhole cover (12) has a recessed receiving groove (1202) on one side of the through groove (1201). The receiving groove (1202) is connected to the through groove (1201). The upper end of the control rod (4) passes through the through groove (1201). The upper end of the control rod (4) has a handle (41) that is located in the receiving groove (1202).

6. A rural sewage screen well according to claim 1, characterized in that: Both the fixed part (21) and the movable part (22) are provided with mounting grooves (201), and the opening edge of the net bag (3) is provided with a mounting ring (32), which is located in the mounting groove (201).

7. A rural sewage grit well according to claim 6, characterized in that: The mounting grooves (201) are respectively opened on the inner side of the fixed part (21) and the movable part (22), and the mounting grooves (201) of the fixed part (21) and the movable part (22) are arranged in a ring and connected to each other.

8. A rural sewage screen well according to claim 6, characterized in that: The mounting ring (32) is made of thermoplastic elastomer.

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