Building drainage filtering device

Abstract

The invention relates to the technical field of filtering devices, in particular to a building drainage filtering device which comprises a filtering pipeline, the filtering pipeline communicates with a drainage pipeline, a filtering cavity is formed in the filtering pipeline, a filtering net is arranged in the filtering cavity, a connecting flange is arranged on the filtering pipeline, and the connecting flange is hollow and rotationally provided with a collecting ball valve. A round hole is formed in the collecting ball valve, the round hole is switched to be communicated with the filtering cavity and the impurity discharging hole by rotating the ball valve, so that the functions of collecting and discharging impurities are achieved, the impurities can be periodically cleaned without cutting off water, the water discharging efficiency is not affected, meanwhile, water cutting off is not needed, damage to a pipeline by a water hammer effect is avoided, and the service life of the pipeline is prolonged. The elastic piece is arranged on the collecting ball valve, the elastic piece can slightly increase the size of the collecting ball valve under the condition that the water pressure in the filtering cavity is increased so as to increase the sealing performance in a self-adaptive mode, and when the impurity accumulation amount is large, an operator can be warned, and normal drainage operation is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of filtering devices, in particular to a building drainage filtering device. Background Art

[0002] Building drainage filtration devices are used to remove impurities, silt, suspended matter, etc. in the drainage system to prevent pipe blockage, water pollution or affect subsequent water resource reuse.

[0003] For example, Chinese patent CN222101108U discloses a filtering device for water supply and drainage, which includes a drainage pipe and a filter box, a cover plate is provided on the top of the filter box, a filter screen is fixedly installed on the bottom of the cover plate, the filter screen is located inside the filter box, a fixing component is provided inside the cover plate, the fixing component includes a disc, a plug plate and a spring, a convex rod is integrally formed on the top of the disc, a knob is provided on the top of the convex rod, a flange seat is provided at one end of the drainage pipe, flange seats are symmetrically provided at both ends of the filter box, the filter box is fixedly installed between the two drainage pipes, handles are symmetrically provided on the top of the cover plate, a slide groove and a circular groove are opened inside the cover plate, and the slide groove is located at the bottom of the circular groove. By installing the filter screen on the bottom of the cover plate and arranging a fixing component inside the cover plate, the filter screen can be fixedly installed inside the filter box, and the filter screen can be taken out of the filter box by turning the knob.

[0004] However, in the above scheme, when cleaning the filter, it is necessary to stop the water supply, open the filter box and take out the filter. This method of stopping the water supply for cleaning not only affects the drainage efficiency but also causes damage to the pipeline due to the water hammer effect generated when the pipeline is started and stopped. Summary of the invention

[0005] Based on this, it is necessary to provide a building drainage filtration device to address the problem of drainage efficiency being affected by the need to stop water during the current impurity cleaning process.

[0006] The above purpose is achieved through the following technical solutions: A building drainage filtering device, comprising: A filter pipe, the filter pipe is connected to the drainage pipe, a filter cavity is provided in the filter pipe, a filter screen is provided in the filter cavity, and the filter screen can intercept impurities in the water; A connecting flange, the connecting flange is connected to the filter pipe, the connecting flange is hollow inside, the inside of the connecting flange is communicated with the filter cavity, and a debris discharge hole is opened on the connecting flange; A collecting ball valve is hollow inside and has a circular hole on its spherical surface. The collecting ball valve rotation seal is arranged inside the connecting flange. The collecting ball valve can rotate to connect the circular hole with the filter cavity or the impurity discharge hole to collect impurities in the filter cavity or discharge the impurities in the collecting ball valve.

[0007] Furthermore, a sensing disk is provided on the collecting ball valve, and a line connecting the center of the sensing disk and the center of the circular hole passes through the center of the collecting ball valve. The sensing disk is configured to sense the amount of impurities accumulated in the filter cavity when the circular hole of the collecting ball valve is connected to the impurity discharge hole.

[0008] Furthermore, the induction disk includes an elastic sheet and a limiting disk, a through hole is opened on the collecting ball valve at a position symmetrical to the circular hole about the center of the circle, a through hole is arranged on the spherical surface of the collecting ball valve, the through hole is coaxial with the circular hole, the outer periphery of the elastic sheet is fixedly connected to the inner periphery of the through hole, the elastic sheet is elastic, and the center position of the elastic sheet bulges in the direction away from the limiting disk.

[0009] Furthermore, a sealing gasket is arranged between the inside of the connecting flange and the outer periphery of the collecting ball valve, and there are two sealing gaskets. The two sealing gaskets are parallel to each other, and the distance between the two sealing gaskets is greater than the diameter of the circular hole and the through hole of the collecting ball valve. The diameters of the two sealing gaskets are greater than the diameter of the circular hole and the through hole of the collecting ball valve.

[0010] Furthermore, the filter pipe has a water inlet and a water outlet, the water inlet and the water outlet are connected to the drainage pipe, the water inlet and the water outlet are connected through the filter chamber, and the filter chamber is inclined toward the water inlet.

[0011] Furthermore, the filter screen in the filter cavity is tilted synchronously with the filter screen, and the tilting direction is the same.

[0012] Furthermore, two rotating rods are fixedly connected to the outer periphery of the collecting ball valve, the two rotating rods are symmetrical about the center of the collecting ball valve and the axes of the two rotating rods coincide, the axes of the two rotating rods are perpendicular to the axis of the circular hole, and the two rotating rods are rotatably sealed and connected to the connecting flange.

[0013] Furthermore, a hand wheel is coaxially and fixedly provided on one end of the two rotating rods extending out of the connecting flange.

[0014] Furthermore, a conical surface is provided at the position where the connecting flange communicates with the filter chamber, the large end of the conical surface faces the filter chamber, and the small end of the conical surface faces the collecting ball valve.

[0015] Furthermore, a blocking plate is detachably provided on the connecting flange, and the blocking plate can open or block the debris removal hole.

[0016] The beneficial effects of the present invention are: The present invention switches the connection between the circular hole and the filter chamber and the impurity discharge hole by rotating the ball valve, thereby realizing the function of collecting and discharging impurities, and further can realize periodic cleaning of impurities without stopping the water supply, and will not affect the drainage efficiency. At the same time, since there is no need to stop the water supply, the damage to the pipeline due to the water hammer effect is avoided, and the service life of the drainage pipeline is increased.

[0017] The present invention provides an induction disk, which includes an elastic sheet and a limiting disk. The elastic sheet can squeeze the through hole of the collecting ball valve when the water pressure in the filter chamber increases, thereby slightly increasing the size of the collecting ball valve to adaptively increase the sealing performance between the collecting ball valve and the connecting flange, and can alert the operator that the blockage degree reaches a threshold when the amount of impurities accumulated is large, thereby ensuring the normal operation of drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a building drainage filtration device provided by an embodiment of the present invention; Figure 2 for Figure 1 A top view of a building drainage filtration device provided in one embodiment; Figure 3 for Figure 2 A cross-sectional view of a building drainage filtration device along AA provided in an embodiment; Figure 4 A schematic structural diagram of a connecting flange of a building drainage filter device provided in one embodiment of the present invention; Figure 5 A schematic structural diagram of a collecting ball valve of a building drainage filtration device provided in one embodiment of the present invention.

[0019] in: 100, filter pipe; 110, water inlet; 120, water outlet; 130, filter chamber; 140, filter screen; 200, connecting flange; 210, spherical cavity; 220, conical surface; 230, opening; 240, sealing gasket; 250, drainage hole; 260, blocking plate; 300, collecting ball valve; 310, round hole; 320, elastic sheet; 330, limiting disk; 340, rotating rod; 350, hand wheel. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which 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 operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Refer to the following Figure 1-Figure 5 To describe a building drainage filtering device provided by the present invention.

[0024] A building drainage filtering device is suitable for filtering building drainage, including a filtering pipe 100, the filtering pipe 100 is connected with a drainage pipe (not shown in the figure), the water in the drainage pipe is filtered through the filtering pipe 100, a filtering chamber 130 is provided in the filtering pipe 100, the water entering the filtering pipe 100 will pass through the filtering chamber 130, a filtering net 140 is provided in the filtering chamber 130, the filtering net 140 intercepts impurities in the water in the filtering chamber 130, the prior art uses the filtering net 140 to intercept impurities, when the amount of impurities accumulated in the filtering chamber 130 is large, the filtering capacity of the filtering net 140 is reduced, thereby The filtering effect of the filter pipe 100 is affected, so it is necessary to stop the water flow in the drainage pipe, remove and clean the filter screen 140, and clean the impurities in the filter chamber 130. However, this method of stopping water for cleaning not only affects the drainage efficiency, but also causes damage to the drainage pipe due to the water hammer effect generated when the drainage pipe is started and stopped. The water hammer effect refers to the shock wave generated by the inertia of the water flow when an open valve is suddenly closed, causing the pressure in the closed pipe system to rise rapidly, causing damage to the pipe and equipment. This phenomenon usually occurs when the pump is suddenly started, stopped or fails, the pump speed changes, or the water flow rate in the pipe system is suddenly opened or closed.

[0025] Therefore, in order to avoid the damage of the drainage pipe by the water hammer effect, the present invention is provided with a connecting flange 200 on the filter pipe 100. The connecting flange 200 is hollow inside and communicated with the filter chamber 130. The connecting flange 200 is provided with a drainage hole 250 for discharging impurities. The internal rotating seal of the connecting flange 200 is provided with a collecting ball valve 300. The collecting ball valve 300 is hollow inside and can accommodate impurities in the water. A circular hole 310 is provided on the spherical surface of the collecting ball valve 300 to allow impurities in the water to pass through.

[0026] In the initial state, the circular hole 310 on the collecting ball valve 300 is connected to the impurity discharge hole 250 of the connecting flange 200. At this time, the collecting ball valve 300 blocks the filter chamber 130 and the connecting flange 200, so that the impurities in the filter chamber 130 remain in the filter chamber 130. When it is necessary to clean the impurities in the filter chamber 130, the collecting ball valve 300 can be rotated to make the circular hole 310 connected to the filter chamber 130, so that the impurities in the filter chamber 130 can enter the collecting ball valve 300 through the circular hole 310. Then, the collecting ball valve 300 is rotated again so that the circular hole 310 on the collecting ball valve 300 is connected to the connecting flange 200 again. 00 is connected with the drainage hole 250 on the filter chamber 130. At this time, the collecting ball valve 300 separates the filter chamber 130 and the connecting flange 200 again to prevent the water in the filter pipe 100 from flowing out, and the impurities in the collecting ball valve 300 will be discharged from the connecting flange 200 through the drainage hole 250, so that the impurities in the filter chamber 130 can be cleaned without stopping the water flow in the drainage pipe, thereby avoiding affecting the drainage efficiency. When the impurities in the filter chamber 130 are discharged, the filtering capacity of the filter net 140 is increased and the flow of water is not blocked, which can further improve the drainage efficiency and avoid the water hammer effect caused by the start and stop of the drainage pipe to cause damage to the drainage pipe.

[0027] It should be noted that the time interval for cleaning the filter chamber 130 can be set according to the impurities in the water flow of the drainage pipe. The filter chamber 130 can be cleaned regularly, that is, the collection ball valve 300 is rotated regularly to discharge the impurities in the filter chamber 130, so as to maintain a good filtering effect of the building drainage filter device.

[0028] Specifically, the collecting ball valve 300 of the present invention is provided with a sensing disk, which can sense the accumulation of impurities in the filter cavity 130. The position of the sensing disk and the position of the circular hole 310 are symmetrical about the center of the collecting ball valve 300. That is, the line connecting the center of the sensing disk and the center of the circular hole 310 passes through the center of the collecting ball valve 300. When the circular hole 310 of the collecting ball valve 300 is connected with the impurity discharge hole 250 of the connecting flange 200, the sensing disk is located between the filter cavity 130 and the connecting flange 200. When there are many impurities in the filter cavity 130 and the impurities affect the filter screen 140, the sensing disk is located between the filter cavity 130 and the connecting flange 200. During filtration, the filtration capacity of the filter screen 140 decreases, and the fluidity of water passing through the filter screen 140 deteriorates, which will cause the water pressure in the filter cavity 130 to increase and push the induction disk. A sensor (not shown in the figure) is provided on the induction disk. When the pressure value sensed by the sensor on the induction disk reaches a preset value, an alarm is issued. The operator drives the collection ball valve 300 to rotate so as to connect the circular hole 310 so that the impurities in the filter cavity 130 enter the collection ball valve 300, thereby cleaning the impurities in the filter cavity 130. After cleaning, the collection ball valve 300 is reset.

[0029] It should be noted that a preset value of the sensor can be set, and an alarm can be issued when the preset value is reached. After the operator is informed, he can promptly turn the collection ball valve 300 to discharge impurities in the filter chamber 130 to prevent excessive accumulation of impurities in the filter chamber 130.

[0030] More specifically, the induction disc of the present invention includes an elastic sheet 320 and a limiting disc 330. A through hole is provided on the collecting ball valve 300 at a position symmetrical to the circular hole 310 about the center of the circle, that is, the through hole and the circular hole 310 are coaxial, and the through hole and the circular hole 310 have the same size. The outer periphery of the elastic sheet 320 is fixedly connected to the inner periphery of the through hole, and the limiting disc 330 is arranged inside the collecting ball valve 300 and close to the elastic sheet 320. The elastic sheet 320 and the limiting disc 330 jointly block the through hole. The elastic sheet 320 is elastic. The center position of the elastic sheet 320 bulges in a direction away from the limiting disc 330. The distance between the highest position of the bulge and the center of the collecting ball valve 300 is less than the radius of the collecting ball valve 300. The sensor is located between the elastic sheet 320 and the limiting disc 330. 0, when the water pressure increases, the elastic sheet 320 can be squeezed, and the bulge in the middle of the elastic sheet 320 will be weakened, thereby squeezing the sensor. When the middle of the elastic sheet 320 is close to a horizontal state, it can contact the limiting plate 330. The limiting plate 330 limits the maximum deformation of the elastic sheet 320. When the elastic sheet 320 reaches the maximum deformation, the sensor on the limiting plate 330 can sound an alarm, and the operator drives the collecting ball valve 300 to rotate 180° to connect the circular hole 310 to the filter chamber 130, so that the impurities in the filter chamber 130 can enter the collecting ball valve 300. After a period of time, the circular hole 310 is rotated again by 180° to connect the impurity discharge hole 250 of the connecting flange 200, thereby discharging the impurities in the collecting ball valve 300.

[0031] It should be noted that the cavity inside the connecting flange 200 in the present invention is a spherical cavity 210, which is compatible with the collecting ball valve 300, and an annular groove is provided at a position near the through hole inside the collecting ball valve 300, and the outer periphery of the limiting disk 330 is connected to the annular groove, and the annular groove only hinders the limiting disk 330 from moving along its axial direction. When the bulge of the elastic sheet 320 in the present invention is weakened, the surrounding areas of the elastic sheet 320 can push the inner periphery of the through hole, thereby slightly increasing the size of the through hole of the collecting ball valve 300. At this time, the limiting disk 330 does not limit the increase in the size of the through hole of the collecting ball valve 300, thereby making the sealing connection between the collecting ball valve 300 and the connecting flange 200 tighter, thereby preventing leakage caused by increased air pressure in the filter chamber 130.

[0032] Specifically, a sealing gasket 240 is provided between the interior of the connecting flange 200 and the periphery of the collecting ball valve 300. The sealing gasket 240 is fixed inside the spherical cavity 210 of the connecting flange 200. There are two sealing gaskets 240 in this embodiment. The two sealing gaskets 240 are respectively provided in the connecting flange 200 near the positions of the impurity discharge hole 250 and the connecting filter cavity 130. The two sealing gaskets 240 are provided in parallel with each other, and the distance between the two sealing gaskets 240 is greater than the diameter of the circular hole 310 and the through hole of the collecting ball valve 300, and the two sealing gaskets 240 are The diameter is larger than the circular hole 310 and the through hole size of the collecting ball valve 300, so that the sealing gasket 240 can pass over the circular hole 310 and the through hole of the collecting ball valve 300 and fit tightly on the surface of the collecting ball valve 300. When the circular hole 310 of the collecting ball valve 300 is connected to the impurity discharge hole 250, the two sealing gaskets 240 can seal the collecting ball valve 300 in the spherical cavity 210 of the connecting flange 200. Both sealing gaskets 240 are slidably sealed with the surface of the collecting ball valve 300, and because the distance between the two sealing gaskets 240 is larger than the diameter of the circular hole 310 and the through hole, as shown in FIG. Figure 5 As shown, when the collecting ball valve 300 rotates 90°, the edges of the circular hole 310 and the through hole will not contact the sealing gasket 240 , thereby preventing impurities in the collecting ball valve 300 from leaking through the circular hole 310 .

[0033] It should be noted that, since one of the two sealing gaskets 240 is close to the filter chamber 130, when the middle bulge of the elastic sheet 320 weakens, it means that the water pressure in the filter chamber 130 is relatively large. At this time, it is necessary to increase the sealing between the collecting ball valve 300 and the connecting flange 200 to prevent leakage. Therefore, the outer peripheral position of the elastic sheet 320 can press against the inner periphery of the through hole, so that the collecting ball valve 300 can tightly press against the sealing gasket 240, thereby increasing the sealing between the collecting ball valve 300 and the connecting flange 200 and further preventing leakage.

[0034] In a further embodiment, the filter pipe 100 in the present invention is a Y-shaped pipe, and the two upper ports of the Y-shaped pipe are respectively the water inlet end 110 and the water outlet end 120, and the water inlet end 110 and the water outlet end 120 are connected to the drainage pipe, so that the water inside the drainage pipe can enter the filter pipe 100 through the water inlet end 110 and re-enter the drainage pipe from the water outlet end 120, and the lower part of the Y-shaped pipe is the filter chamber 130, and the filter chamber 130 is connected to the water inlet end 110 and the water outlet end 120. The filter chamber 130 in this embodiment is not The filter chamber 130 is not vertical but inclined, and the filter chamber 130 is inclined toward the water inlet end 110, and the filter screen 140 in the filter chamber 130 is inclined synchronously with the filter chamber 130, and the inclination direction is the same. The inclined setting of the filter chamber 130 allows the water flow to have a certain fluidity when entering the filter chamber 130, preventing impurities from being directly deposited on the surface of the filter screen 140, thereby reducing the possibility of blockage, and the inclined filter screen 140 can help impurities to slide down under the action of the water flow, thereby improving the self-cleaning ability of the filter screen 140.

[0035] Specifically, the filter screen 140 in this embodiment is cylindrical, and the side wall of the cylindrical filter screen 140 is inclined. The filter cavity 130 in this embodiment is also cylindrical, and the cylindrical filter screen 140 is adapted to the cylindrical filter cavity 130 .

[0036] In a further embodiment, in order to drive the collecting ball valve 300 to rotate inside the connecting flange 200, two rotating rods 340 are fixedly provided on the collecting ball valve 300, and the two rotating rods 340 are symmetrically arranged about the center of the collecting ball valve 300, and the axes of the two rotating rods 340 coincide with each other, and the axes of the two rotating rods 340 are perpendicular to the axis of the circular hole 310, and the two rotating rods 340 are rotatingly sealed and arranged in the connecting flange 200, and one end of the two rotating rods 340 extends out of the connecting flange 200. When the collecting ball valve 300 needs to be rotated, the two rotating rods 340 can be driven, and the two rotating rods 340 drive the collecting ball valve 300 to rotate around the axis of the rotating rods 340.

[0037] Specifically, the two rotating rods 340 extending out of the connecting flange 200 are coaxially and fixedly provided with a handwheel 350 . The operator can drive the two rotating rods 340 to rotate by turning the handwheel 350 , and the two rotating rods 340 thereby drive the collecting ball valve 300 to rotate.

[0038] In a further embodiment, a conical surface 220 is provided at the connection position between the connecting flange 200 of the present invention and the filter chamber 130, the large end of the conical surface 220 faces the filter chamber 130, and the small end of the conical surface 220 faces the collecting ball valve 300, the small end of the conical surface 220 has an opening 230, the diameter of the opening 230 is slightly smaller than the diameter of the circular hole 310, when the circular hole 310 of the collecting ball valve 300 is connected with the opening 230, the impurities in the filter chamber 130 can enter the collecting ball valve 300, and the setting of the conical surface 220 makes it easier for the impurities to enter the collecting ball valve 300, and when the elastic sheet 320 of the collecting ball valve 300 blocks the opening 230, the impurities in the filter chamber 130 can be accumulated on the conical surface 220, and as the impurities increase, they are gradually accumulated on the elastic sheet 320.

[0039] In a further embodiment, a blocking plate 260 is detachably provided at the impurity discharge hole 250 of the connecting flange 200 of the present invention. The blocking plate 260 is detachably connected by bolts, and the blocking plate 260 can block or open the impurity discharge hole 250. When the blocking plate 260 blocks the impurity discharge hole 250, the circular hole 310 on the connecting flange 200 is connected with the impurity discharge hole 250, and the blocking plate 260 can abut against the edge of the circular hole 310 on the connecting flange 200, thereby limiting the rotation of the collecting ball valve 300. Only when it is necessary to discharge impurities, the blocking plate 260 is first removed. After the restriction of the blocking plate 260 on the collecting ball valve 300 is released, the operator drives the collecting ball valve 300 to rotate 180° so that the circular hole 310 is connected to the filter chamber 130, so that the impurities in the filter chamber 130 enter the collecting ball valve 300, and when the operator rotates 180° again, the circular hole 310 is connected with the impurity discharge hole 250 to discharge the impurities.

[0040] The specific working process of a building drainage filtration device provided by the present invention is described in combination with the above embodiments: Install: The water inlet end 110 and the water outlet end 120 of the filter pipe 100 are both connected to the drainage pipe through flanges (not shown in the figure). The operator turns the hand wheel 350 to connect the circular hole 310 of the collecting ball valve 300 with the drainage hole 250 of the connecting flange 200, and then installs the blocking plate 260 on the connecting flange 200 to limit the rotation of the collecting ball valve 300.

[0041] Normal filtering: The water in the drainage pipe passes through the filter chamber 130 in the filter pipe 100. The filter screen 140 in the filter chamber 130 can filter the water flowing through, and the filter screen 140 intercepts impurities in the water in the filter chamber 130. Due to the inclined setting of the filter chamber 130 and the filter screen 140, the water flow in the filter chamber 130 produces a certain fluidity, which prevents impurities from being directly deposited on the surface of the filter screen 140, thereby reducing the possibility of blockage, and helps impurities to slide down under the action of the water flow, thereby improving the self-cleaning ability of the filter screen 140.

[0042] Impurity accumulation: Impurities intercepted by the filter screen 140 will accumulate in the filter chamber 130. Since a conical surface 220 is provided at the connection between the connecting flange 200 and the filter chamber 130, the impurities will accumulate on the conical surface 220 under the action of gravity, and as the impurities increase, they will gradually accumulate on the elastic sheet 320 of the collecting ball valve 300.

[0043] Regular chores: The operator discharges impurities in the water regularly. When discharging impurities, the operator first removes the blocking plate 260, and then rotates the hand wheel 350 180°. When the hand wheel 350 rotates, the rotating rod 340 is driven to rotate synchronously, and the rotating rod 340 drives the collecting ball valve 300 to rotate 180° around the axis of the rotating rod 340. The circular hole 310 of the collecting ball valve 300 is connected with the small end opening 230 of the conical surface 220 of the connecting flange 200, and the impurities accumulated in the filter cavity 130 slide into the collecting ball valve 300 through the conical surface 220. After collecting for a period of time, the operator continues to rotate or reversely rotates 180° to reset the collecting ball valve 300, and the circular hole 310 of the collecting ball valve 300 is connected with the impurity discharge hole 250 of the connecting flange 200 again. The impurities in the collecting ball valve 300 are discharged through the circular hole 310 and the impurity discharge hole 250, thereby completing the regular impurity discharge operation.

[0044] Forget to clear debris or blockage speed increases and issue an alarm: If the operator neglects to remove the impurities regularly, or if the impurities in the water flow accumulate quickly due to abnormal impurities in the filter chamber 130, and the filter chamber 130 is seriously clogged before the regular removal, the amount of impurities accumulated in the filter chamber 130 is large, and the filtering capacity of the filter screen 140 in the filter chamber 130 is weakened, resulting in a decrease in the flow of water, thereby increasing the water pressure in the filter chamber 130. The increased water pressure in the filter chamber 130 can press the elastic sheet 320 on the collection ball valve 300. At this time, the raised part of the elastic sheet 320 will be weakened after being pressed, and the outer periphery of the elastic sheet 320 can push the collection ball valve. The inner circumference of the through hole 300 slightly increases the size of the collecting ball valve 300 at this position, so that the collecting ball valve 300 at this position can press the sealing gasket 240, thereby increasing the sealing of this position. At the same time, as the bulge of the elastic sheet 320 gradually weakens, the sealing of this position can be gradually increased. When the bulge of the elastic sheet 320 reaches the minimum, that is, when the elastic sheet 320 is restricted by the limiting disk 330, the sensor on the limiting disk 330 reaches the preset value, thereby sounding an alarm, so that the operator can discover and remove impurities in time to avoid the filter chamber 130 being in a state of severe blockage.

[0045] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A building drainage filtration device, characterized in that: include: A filter pipe, the filter pipe is connected to the drainage pipe, a filter cavity is provided in the filter pipe, a filter screen is provided in the filter cavity, and the filter screen can intercept impurities in the water; A connecting flange, the connecting flange is connected to the filter pipe, the connecting flange is hollow inside, the inside of the connecting flange is communicated with the filter cavity, and a debris removal hole is opened on the connecting flange; A collecting ball valve is hollow inside and has a circular hole on its spherical surface. The collecting ball valve rotation seal is arranged inside the connecting flange. The collecting ball valve can rotate to connect the circular hole with the filter cavity or the impurity discharge hole to collect impurities in the filter cavity or discharge the impurities in the collecting ball valve.

2. The building drainage filtration device according to claim 1, characterized in that: The collecting ball valve is provided with a sensing disk, and a line connecting the center of the sensing disk and the center of the circular hole passes through the center of the collecting ball valve. The sensing disk is configured to sense the amount of impurities accumulated in the filter cavity when the circular hole of the collecting ball valve is connected to the impurity discharge hole.

3. The building drainage filtration device according to claim 2, characterized in that: The induction plate includes an elastic sheet and a limiting plate. A through hole is provided on the spherical surface of the collecting ball valve. The through hole is coaxial with the circular hole. The limiting plate is located inside the collecting ball valve and close to the through hole. The outer periphery of the elastic sheet is fixedly connected to the inner periphery of the through hole. The elastic sheet is elastic, and the center position of the elastic sheet bulges in a direction away from the limiting plate.

4. The building drainage filtration device according to claim 3, characterized in that: A sealing gasket is arranged between the inside of the connecting flange and the outer periphery of the collecting ball valve. There are two sealing gaskets, which are parallel to each other. The distance between the two sealing gaskets is greater than the diameter of the circular hole and the through hole of the collecting ball valve. The diameters of the two sealing gaskets are greater than the diameter of the circular hole and the through hole of the collecting ball valve.

5. The building drainage filtration device according to claim 1, characterized in that: The filter pipe has a water inlet and a water outlet, the water inlet and the water outlet are connected to the drainage pipe, the water inlet and the water outlet are connected through the filter cavity, and the filter cavity is inclined toward the water inlet.

6. The building drainage filtration device according to claim 5, characterized in that: The filter screen in the filter cavity is tilted synchronously with the filter screen, and the tilting direction is the same.

7. The building drainage filtration device according to claim 1, characterized in that: Two rotating rods are fixedly connected to the outer periphery of the collecting ball valve, the two rotating rods are symmetrical about the center of the collecting ball valve and the axes of the two rotating rods coincide, the axes of the two rotating rods are perpendicular to the axis of the circular hole, and the two rotating rods are rotatably sealed and connected to the connecting flange.

8. The building drainage filtration device according to claim 7, characterized in that: The ends of the two rotating rods extending out of the connecting flange are coaxially and fixedly provided with hand wheels.

9. The building drainage filtration device according to claim 1, characterized in that: A conical surface is provided at the position where the connecting flange communicates with the filter chamber, the large end of the conical surface faces the filter chamber, and the small end of the conical surface faces the collecting ball valve.

10. The building drainage filtration device according to claim 1, characterized in that: A blocking plate is detachably provided on the connecting flange, and the blocking plate can open or block the debris removal hole.

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