Filtering device for municipal water supply and drainage

Abstract

The utility model relates to the technical field of water supply and drainage filtering, in particular to a municipal water supply and drainage filtering device which comprises a shell, a driving mechanism used for driving a filtering mechanism to intermittently rotate is arranged at the top of the shell, the filtering mechanism is fixedly connected to the output end of the driving mechanism, and the filtering mechanism is rotationally connected to the interior of the shell; the shell is fixedly connected with a water inlet pipe, a blow-off pipe and a drain pipe; the filtering mechanism comprises a connecting frame, a filter screen is arranged on the connecting frame, and a fixing plate is fixedly mounted at the top of the connecting frame; a connecting shaft is fixedly connected to the middle of the connecting frame, a bottom plate is fixedly connected to the bottom of the connecting frame, a first limiting groove is formed in the top of the bottom plate, and balls are arranged at the bottom of the bottom plate. The device has the beneficial effects that when the device is used, the water passing capacity of the filter screen is prevented from being reduced due to more solid impurities blocked and filtered by the filter screen, so that the filtering efficiency is ensured; the situation that the filtering mechanism rotates reversely due to impact of water flow is avoided, and therefore the situation that sewage flows backwards is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply and drainage filtering, in particular to a filtering device for municipal water supply and drainage. Background Art

[0002] Municipal water supply and drainage filtration devices are key facilities in urban drainage systems. They are mainly used to intercept solid waste (such as leaves, plastics, sediment, hair, kitchen waste, etc.) in pipes to prevent blockages and ensure the normal operation of water supply and drainage systems. These devices are usually installed in key nodes such as inspection wells of drainage pipes, water inlets of pump stations, and drainage outlets in residential areas. According to the pipe diameter and flow requirements, a filtration point is arranged at intervals. Common types include: grilles (divided into coarse and fine types, coarse grilles intercept large pieces of garbage, and fine grilles filter small particles, mostly used at the entrance of sewage pumping stations), filters (installed at drain outlets or household sewers to filter plastic bags, food residues, etc.), etc.

[0003] A filtering device for municipal water supply and drainage disclosed in Chinese patent CN222266278U includes: a pipe body, a flange, an anti-blocking component, a filter plate adjustment component, a waste box and a sealing cover; the flange is fixedly connected to both ends of the pipe body, the anti-blocking component is located on the inner side of the pipe body, the filter plate adjustment component is located on one side of the anti-blocking component, the waste box is located at the bottom of the pipe body, and the sealing cover is located at the bottom end of the waste box.

[0004] However, by comparing the prior art and the comparative scheme, it can be seen that the existing filtering device still has the following problems in actual use:

[0005] Most existing filtration devices filter and block solid impurities through physical interception. As the use time increases, the solid impurities blocked by the filter will also increase, requiring regular cleaning and maintenance by manual or mechanical means. Otherwise, the accumulated solid impurities will reduce the water flow capacity, and in severe cases may even cause sewage backflow. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background technology, and provide a filtering device for municipal water supply and drainage.

[0007] The purpose of the utility model is achieved by the following technical solutions: A filter device for municipal water supply and drainage, comprising a housing, a driving mechanism for driving a filter mechanism to intermittently rotate is arranged on the top of the housing, the filter mechanism is fixedly connected to the output end of the driving mechanism, and the filter mechanism is rotatably connected to the inside of the housing;

[0008] The outer shell is fixedly connected with a water inlet pipe, a sewage pipe and a drain pipe;

[0009] The filtering mechanism includes a connecting frame, on which a filter screen is arranged, and a fixing plate is fixedly installed on the top of the connecting frame;

[0010] A connecting shaft is fixedly connected to the middle of the connecting frame, a bottom plate is fixedly connected to the bottom of the connecting frame, a first limiting groove is formed in the top of the bottom plate, and a ball is arranged at the bottom of the bottom plate;

[0011] A second limiting groove is formed in the bottom of the fixing plate.

[0012] Preferably, a top cover is fixedly installed on the top of the outer shell, a first connecting plate is fixedly connected to the top of the top cover, a limiting component is arranged on the first connecting plate, and an installation frame is fixedly connected to the top of the top cover through bolts.

[0013] Preferably, the number of the filter screens is multiple, and they are distributed in a circumferential array on the connecting frame.

[0014] Preferably, one end of the connecting shaft far away from the bottom plate is fixedly connected to the output end of the driving mechanism through bolts, one end of the connecting shaft close to the bottom plate is rotationally connected to the outer shell, and one end of the connecting shaft far away from the bottom plate is rotationally connected to the top cover.

[0015] Preferably, the number of the first limiting grooves is the same as that of the filter screens, and one side of the filter screen is inserted into the first limiting groove.

[0016] Preferably, the bottom plate is rotationally connected to the bottom inside the outer shell through the ball.

[0017] Preferably, the number of the second limiting grooves is the same as that of the first limiting grooves, the positions of the second limiting grooves correspond to those of the first limiting grooves, and the side of the filter screen far away from the first limiting groove is inserted into the second limiting groove.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] When the filtering device for municipal water supply and drainage is in use, it can avoid reducing the water passing capacity of the filter screen due to too many solid impurities blocked by the filter screen, thereby ensuring the filtering efficiency; it can avoid the reverse rotation of the filtering mechanism due to the impact of water flow, thereby avoiding the situation of sewage backflow.

[0020] The parts not involved in this device are the same as those in the prior art or can be realized by adopting the prior art. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Schematic diagram of the split structure of the present utility model;

[0023] Figure 2 Schematic diagram of the structure of the present utility model;

[0024] Figure 3 Schematic diagram of the flow trajectories of water and solid impurities in the working state of the present utility model;

[0025] Figure 4 Schematic diagram of the structure of the outer shell of the present utility model;

[0026] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at position A;

[0027] Figure 6 Schematic diagram of the structure of the driving mechanism of the present utility model;

[0028] Figure 7 Schematic diagram of the split structure of the filtering mechanism of the present utility model;

[0029] Figure 8 Schematic diagram of the structure of the connecting frame of the present utility model from the first perspective;

[0030] Figure 9 Schematic diagram of the structure of the connecting frame of the present utility model from the second perspective;

[0031] Figure 10 Schematic diagram of the structure of the fixing plate of the present utility model.

[0032] In the figure: 1. Outer shell; 101. Water inlet pipe; 102. Sewage discharge pipe; 103. Drain pipe; 104. Top cover; 105. First connecting plate; 106. Limiting assembly; 107. Mounting bracket; 108. Slide bar; 109. Limiting plate; 110. Second connecting plate; 111. Elastic member; 2. Driving mechanism; 201. Driving member; 202. First connecting disk; 203. Pulley; 204. Second connecting disk; 205. Chute; 206. Ratchet; 3. Filtering mechanism; 31. Connecting frame; 311. Connecting shaft; 312. Bottom plate; 313. First limiting groove; 314. Ball; 32. Filter screen; 33. Fixing plate; 331. Second limiting groove. Detailed implementation manners

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral 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, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] The additional aspects and advantages of the present utility model will be further given in the following description in conjunction with the drawings, and some will become obvious from the following description or be understood through the practice of the present utility model.

[0035] As Figures 1 to 3 shown, a filtering device for municipal water supply and drainage includes a housing 1. A driving mechanism 2 for driving the filtering mechanism 3 to perform intermittent rotational motion is provided at the top of the housing 1. The filtering mechanism 3 is fixedly connected to the output end of the driving mechanism 2, and the filtering mechanism 3 is rotatably connected inside the housing 1;

[0036] As Figure 4 and Figure 5 shown, a water inlet pipe 101, a sewage pipe 102, and a drain pipe 103 are fixedly connected to the housing 1. A top cover 104 is fixedly installed on the top of the housing 1 through bolts. A first connecting plate 105 is fixedly connected to the top of the top cover 104. A limiting component 106 is provided on the first connecting plate 105. An installation frame 107 is fixedly connected to the top of the top cover 104 through bolts. The limiting component 106 includes a sliding rod 108 slidably connected to the first connecting plate 105. One end of the sliding rod 108 is fixedly connected to a limiting plate 109. The end of the sliding rod 108 away from the limiting plate 109 is fixedly connected to a second connecting plate 110. An elastic member 111 is provided between the second connecting plate 110 and the first connecting plate 105;

[0037] As Figure 2 and Figure 6As shown, the driving mechanism 2 includes a driving member 201, a first connecting disk 202, a pulley 203, a second connecting disk 204, a chute 205, and a ratchet wheel 206. The driving member 201 is fixedly installed on the mounting frame 107. In this embodiment, the driving member 201 is a reduction motor. The output end of the driving member 201 is fixedly connected to the first connecting disk 202. A pulley 203 is rotatably connected to one side of the first connecting disk 202 away from the driving member 201. The second connecting disk 204 is provided with a chute 205. The number of chutes 205 is multiple, and they are circumferentially and arrayedly distributed on the second connecting disk 204. The chute 205 is adapted to the pulley 203. The bottom of the second connecting disk 204 is fixedly connected to a ratchet wheel 206. The position of the limiting component 106 corresponds to the position of the ratchet wheel 206 (the position of the limiting plate 109 corresponds to the position of the ratchet wheel 206);

[0038] As Figure 6 and Figure 7 shown, the filtering mechanism 3 includes a connecting frame 31, a filter screen 32, and a fixing plate 33. The connecting frame 31 is provided with a filter screen 32. The number of filter screens 32 is multiple, and they are circumferentially and arrayedly distributed on the connecting frame 31. The number of chutes 205 is the same as the number of filter screens 32. The top of the connecting frame 31 is fixedly installed with a fixing plate 33 through bolts and nuts;

[0039] As Figure 1 , Figure 3 , 8 and Figure 9 shown, the connecting frame 31 is provided with a slot, and the filter screen 32 is inserted into the slot. A connecting shaft 311 is fixedly connected to the middle of the connecting frame 31. The bottom of the connecting frame 31 is fixedly connected to a bottom plate 312. One end of the connecting shaft 311 away from the bottom plate 312 is fixedly connected to one side of the ratchet wheel 206 away from the second connecting disk 204 through a bolt. One end of the connecting shaft 311 close to the bottom plate 312 is rotatably connected to the housing 1. One end of the connecting shaft 311 away from the bottom plate 312 is rotatably connected to the top cover 104. The top of the bottom plate 312 is provided with a first limiting groove 313. The number of first limiting grooves 313 is the same as the number of filter screens 32. One side of the filter screen 32 is inserted into the first limiting groove 313. A ball 314 is arranged at the bottom of the bottom plate 312. The bottom plate 312 is rotatably connected to the bottom inside the housing 1 through the ball 314;

[0040] As Figure 3 , Figure 7 and Figure 10 shown, the bottom of the fixing plate 33 is provided with a second limiting groove 331. The number of second limiting grooves 331 is the same as the number of first limiting grooves 313. The position of the second limiting groove 331 corresponds to the position of the first limiting groove 313. The side of the filter screen 32 away from the first limiting groove 313 is inserted into the second limiting groove 331.

[0041] The working process is as follows:

[0042] S1. When in use, water carrying solid impurities enters from the water inlet pipe 101, and the solid impurities in the water are blocked by the filter screen 32 corresponding to the water inlet pipe 101;

[0043] S2. With the increase of usage time, when the filter screen 32 corresponding to the water inlet pipe 101 blocks more solid impurities, the driving member 201 is started, and the driving member 201 drives the pulley 203 to rotate through the first connecting plate 202. During the rotation, the pulley 203 slides into the slide groove 205 to turn the second connecting plate 204. The second connecting plate 204 drives the connecting shaft 311 to rotate through the ratchet 206. The connecting shaft 311 drives the filter screen 32 to rotate through the connecting frame 31, and the filter screen 32 corresponding to the water inlet pipe 101 is switched to avoid reducing the water passing capacity of the filter screen 32 due to the large number of solid impurities blocked by the filter screen 32, thereby ensuring the filtration efficiency;

[0044] S3, after the filter screen 32 is switched, the pulley 203 slides out of the slide slot 205, and the filtering mechanism 3 enters the intermittent state. The filter screen 32 corresponding to the water inlet pipe 101 filters the water entering the water inlet pipe 101, and the filter screen 32 that previously blocked and filtered more solid impurities carries the blocked solid impurities and rotates toward the sewage pipe 102;

[0045] S4. When the filter screen 32 carrying solid impurities corresponds to the sewage pipe 102, part of the water is used to backwash the filter screen 32 carrying solid impurities, and the solid impurities carried by the filter screen 32 are washed down by the water and flow out along the sewage pipe 102, and the remaining filtered water is discharged from the drainage pipe 103;

[0046] S5. When the filter mechanism 3 is intermittent and does not rotate to switch the filter screen 32, the limit assembly 106 limits the ratchet 206 to prevent the filter mechanism 3 from reversing due to the impact of the water flow, thereby preventing sewage from backflowing.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A filtering device for municipal water supply and drainage, characterized in that: It comprises a housing (1), the top of the housing (1) being provided with a driving mechanism (2) for driving a filtering mechanism (3) to intermittently rotate, the filtering mechanism (3) being fixedly connected to an output end of the driving mechanism (2), and the filtering mechanism (3) being rotatably connected to the interior of the housing (1); The housing (1) is fixedly connected with a water inlet pipe (101), a sewage discharge pipe (102) and a drainage pipe (103); The filtering mechanism (3) comprises a connecting frame (31), a filter screen (32) is arranged on the connecting frame (31), and a fixing plate (33) is fixedly mounted on the top of the connecting frame (31); A connecting shaft (311) is fixedly connected to the middle of the connecting frame (31), a bottom plate (312) is fixedly connected to the bottom of the connecting frame (31), a first limiting groove (313) is provided at the top of the bottom plate (312), and a ball bearing (314) is provided at the bottom of the bottom plate (312); A second limiting groove (331) is formed at the bottom of the fixing plate (33).

2. A filter device for municipal water supply and drainage according to claim 1, characterized in that: A top cover (104) is fixedly mounted on the top of the housing (1), a first connecting plate (105) is fixedly connected to the top of the top cover (104), a limit position assembly (106) is provided on the first connecting plate (105), and a mounting frame (107) is fixedly connected to the top of the top cover (104) by means of bolts.

3. A filter device for municipal water supply and drainage according to claim 1, characterized in that: The filter screens (32) are multiple in number and distributed in a circular array on the connecting frame (31).

4. A filter device for municipal water supply and drainage according to claim 2, characterized in that: One end of the connecting shaft (311) away from the bottom plate (312) is fixedly connected to the output end of the driving mechanism (2) by means of bolts, one end of the connecting shaft (311) close to the bottom plate (312) is rotatably connected to the housing (1), and one end of the connecting shaft (311) away from the bottom plate (312) is rotatably connected to the top cover (104).

5. A filter device for municipal water supply and drainage according to claim 3, characterized in that: The number of the first limiting grooves (313) is the same as the number of the filter screens (32), and one side of the filter screen (32) is inserted into the first limiting groove (313).

6. A filter device for municipal water supply and drainage according to claim 1, characterized in that: The bottom plate (312) is rotatably connected to the bottom of the housing (1) via a ball bearing (314).

7. A filter device for municipal water supply and drainage according to claim 1, characterized in that: The number of the second limiting grooves (331) is the same as the number of the first limiting grooves (313); the positions of the second limiting grooves (331) correspond to the positions of the first limiting grooves (313); and the side of the filter (32) away from the first limiting groove (313) is inserted into the second limiting groove (331).

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