A building drainage filtration device

Abstract

The present invention relates to the technical field of filtering devices, and specifically provides a building drainage filtering device, which includes a filtering pipe. The filtering pipe is connected to a drainage pipe. A filtering cavity is formed inside the filtering pipe, and a filter screen is arranged in the filtering cavity. A connecting flange is provided on the filtering pipe. The connecting flange is hollow inside and a collecting ball valve is rotatably arranged. A round hole is formed in the collecting ball valve. By rotating the ball valve, the communication between the round hole and the filtering cavity and the impurity discharge hole is switched, so as to realize the functions of collecting and discharging impurities. Furthermore, periodic cleaning of impurities can be realized without stopping the water supply, which 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 caused by the water hammer effect is avoided. An elastic sheet is arranged on the collecting ball valve. The elastic sheet can slightly increase the size of the collecting ball valve to adaptively increase the sealing performance when the water pressure in the filtering cavity increases, and can warn the operator when the accumulation amount of impurities is large to ensure the normal operation of drainage.

Description

Technical Field

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

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

[0003] For example, Chinese Patent CN222101108U discloses a filtering device for water supply and drainage. The solution includes a drainage pipe and a filtering box. A cover plate is provided at the top of the filtering box. A filter screen is fixedly installed at the bottom of the cover plate. The filter screen is located inside the filtering box. A fixing component is provided inside the cover plate. The fixing component includes a disc, a plug board and a spring. A convex rod is integrally formed at the top of the disc. A knob is provided at the top of the convex rod. One end of the drainage pipe is provided with a flange seat. Flange seats are symmetrically provided at both ends of the filtering box. The filtering box is fixedly installed between the two drainage pipes. Handles are symmetrically provided at the top of the cover plate. A chute and a circular groove are opened inside the cover plate. The chute is located at the bottom of the circular groove. In this solution, by installing the filter screen at the bottom of the cover plate and setting a fixing component inside the cover plate, the filter screen can be fixedly installed inside the filtering box. At the same time, turning the knob can take out the filter screen from the filtering box.

[0004] However, in the above solution, when cleaning the filter screen, it is necessary to stop the water supply, open the filtering box and take out the filter screen. Such a way of cleaning by stopping the water supply not only affects the drainage efficiency but also causes damage to the pipeline due to the water hammer effect generated when the pipeline starts and stops. Summary of the Invention

[0005] Based on this, in view of the problem that the current impurity cleaning process requires stopping the water supply, which affects the drainage efficiency, it is necessary to provide a building drainage filtering device.

[0006] The above object is achieved by the following technical solutions:

[0007] A building drainage filtering device includes:

[0008] A filtering pipe, the filtering pipe is connected to the drainage pipe, a filtering cavity is opened inside the filtering pipe, a filter screen is arranged inside the filtering cavity, and the filter screen can intercept impurities in the water;

[0009] A connecting flange, the connecting flange connects the filtering pipe, the inside of the connecting flange is hollow, the inside of the connecting flange is communicated with the filtering cavity, and a waste discharging hole is opened on the connecting flange;

[0010] Collection ball valve, the interior of which is hollow and has round holes on its spherical surface. The collection ball valve is rotationally and sealingly arranged inside the connecting flange. By rotating the collection ball valve, the round holes can be communicated with the filtration chamber or the impurity discharge hole to collect impurities in the filtration chamber or discharge the impurities in the collection ball valve.

[0011] Furthermore, an induction disc is arranged on the collection ball valve. The connection line between the center of the induction disc and the center of the round hole passes through the center of the collection ball valve. The induction disc is configured to sense the accumulation amount of impurities in the filtration chamber when the round hole of the collection ball valve is communicated with the impurity discharge hole.

[0012] Furthermore, the induction disc includes an elastic sheet and a limiting disc. A through hole is provided at a position on the collection ball valve that is symmetric with the round hole about the center of the circle. A through hole is also provided on the spherical surface of the collection ball valve. The through hole is coaxial with the round hole. The outer periphery of the elastic sheet is fixedly connected to the inner periphery of the through hole. The elastic sheet has elasticity, and the central position of the elastic sheet bulges towards the direction away from the limiting disc.

[0013] Furthermore, a sealing gasket is arranged between the interior of the connecting flange and the outer periphery of the collection ball valve. There are two sealing gaskets, and the two sealing gaskets are parallel to each other. The distance between the two sealing gaskets is greater than the diameters of the round hole and the through hole of the collection ball valve, and the diameters of the two sealing gaskets are greater than the diameters of the round hole and the through hole of the collection ball valve.

[0014] Furthermore, the filtration pipeline has a water inlet end and a water outlet end. The water inlet end and the water outlet end are communicated with the drainage pipeline. The water inlet end and the water outlet end are communicated through the filtration chamber, and the filtration chamber is inclined towards the water inlet end.

[0015] Furthermore, the filter screen in the filtration chamber is inclined synchronously with the filter screen, and the inclination directions are the same.

[0016] Furthermore, two rotating rods are fixedly connected to the outer periphery of the collection ball valve. The two rotating rods are symmetric about the center of the collection 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 round hole, and the two rotating rods are rotationally and sealingly connected to the connecting flange.

[0017] Furthermore, handwheels are coaxially and fixedly arranged at one ends of the two rotating rods that extend out of the connecting flange.

[0018] Furthermore, a conical surface is arranged at the position where the connecting flange is communicated with the filtration chamber. The large end of the conical surface faces the filtration chamber, and the small end of the conical surface faces the collection ball valve.

[0019] Furthermore, a plugging plate is detachably arranged on the connecting flange, and the plugging plate can open or block the impurity discharge hole.

[0020] The beneficial effects of the present invention are as follows:

[0021] By rotating the ball valve, the present invention switches the connection between the round hole and the filtration chamber and the impurity discharge hole, thereby realizing the functions of collecting and discharging impurities. Furthermore, it can periodically clean the impurities without stopping the water supply, which 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 caused by the water hammer effect is avoided, and the service life of the drainage pipeline is prolonged.

[0022] The present invention is provided with an induction disc, which includes an elastic sheet and a limiting disc. The elastic sheet can squeeze the through hole of the collection ball valve when the water pressure in the filtration chamber increases, thereby slightly increasing the size of the collection ball valve to adaptively improve the sealing performance between the collection ball valve and the connecting flange. Moreover, when the accumulation amount of impurities is large, it can warn the operator that the blockage degree reaches the threshold value to ensure the normal operation of drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a building drainage filtration device provided by an embodiment of the present invention;

[0024] Figure 2 is Figure 1 a top view of the building drainage filtration device provided by an embodiment in

[0025] Figure 3 is Figure 2 a sectional view of the building drainage filtration device provided by an embodiment in along A-A;

[0026] Figure 4 It is a schematic structural diagram of the connecting flange of the building drainage filtration device provided by an embodiment of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the collection ball valve of the building drainage filtration device provided by an embodiment of the present invention.

[0028] Wherein:

[0029] 100, filtration pipeline; 110, water inlet end; 120, water outlet end; 130, filtration chamber; 140, filter screen;

[0030] 200, connecting flange; 210, spherical cavity; 220, conical surface; 230, opening; 240, sealing gasket; 250, impurity discharge hole; 260, plugging plate;

[0031] 300, collection ball valve; 310, round hole; 320, elastic sheet; 330, limiting disc; 340, rotating rod; 350, handwheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be 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.

[0033] The serial numbers assigned to components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0035] The following refers to Figures 1-5 to describe a building drainage filtering device provided by the present invention.

[0036] A building drainage filtering device, applicable to the filtration of building drainage, includes a filtering pipeline 100. The filtering pipeline 100 is communicated with a drainage pipeline (not shown in the figure). The water in the drainage pipeline is filtered through the filtering pipeline 100. A filtering cavity 130 is formed inside the filtering pipeline 100. The water entering the filtering pipeline 100 will pass through the filtering cavity 130. A filter screen 140 is arranged inside the filtering cavity 130. The filter screen 140 intercepts impurities in the water within the filtering cavity 130. In the prior art, the filter screen 140 is always used to intercept impurities. When the accumulation amount of impurities in the filtering cavity 130 is relatively large, the filtering ability of the filter screen 140 is reduced, thus affecting the filtering effect of the filtering pipeline 100. Therefore, it is necessary to stop the water flow in the drainage pipeline, remove the filter screen 140 for cleaning, and clean the impurities in the filtering cavity 130. However, this way of cleaning by stopping water supply not only affects the drainage efficiency but also causes damage to the drainage pipeline due to the water hammer effect generated when the drainage pipeline starts and stops. The water hammer effect refers to the phenomenon that when a suddenly closed valve causes a shock wave generated by the inertia of the water flow, resulting in a rapid increase in pressure in the closed pipeline system, causing damage to the pipeline and equipment. It usually occurs when the pump suddenly starts, stops or malfunctions, the pump speed changes, or the water flow speed in the pipeline system suddenly starts or stops.

[0037] Therefore, to avoid the damage of the water hammer effect to the drainage pipeline, a connecting flange 200 is provided on the filtering pipeline 100. The inside of the connecting flange 200 is hollow. The inside of the connecting flange 200 is communicated with the filtering cavity 130. And a waste discharge hole 250 is opened on the connecting flange 200. The waste discharge hole 250 is used to discharge impurities. A collecting ball valve 300 is rotationally and sealingly arranged inside the connecting flange 200. The inside of the collecting ball valve 300 is hollow. The inside of the collecting ball valve 300 can accommodate impurities in the water. A round hole 310 is opened on the spherical surface of the collecting ball valve 300. The round hole 310 allows impurities in the water to pass through.

[0038] In the initial state, the round hole 310 on the collection ball valve 300 communicates with the impurity discharge hole 250 of the connecting flange 200. At this time, the collection ball valve 300 seals the filter cavity 130 and the connecting flange 200, so that the impurities in the filter cavity 130 stay in the filter cavity 130. When it is necessary to clean the impurities in the filter cavity 130, the collection ball valve 300 can be rotated to make the round hole 310 communicate with the filter cavity 130, so that the impurities in the filter cavity 130 can enter the interior of the collection ball valve 300 through the round hole 310. Then, the collection ball valve 300 is rotated again to make the round hole 310 on the collection ball valve 300 communicate with the impurity discharge hole 250 on the connecting flange 200 again. At this time, the collection ball valve 300 separates the filter cavity 130 and the connecting flange 200 again to prevent the water in the filter pipe 100 from flowing out, and the impurities in the collection ball valve 300 will be discharged from the connecting flange 200 through the impurity discharge hole 250. Thus, it is possible to clean the impurities in the filter cavity 130 without stopping the water flow in the drainage pipe, thereby avoiding affecting the drainage efficiency. When the impurities in the filter cavity 130 are discharged, the filtering ability of the filter net 140 increases and does not block the water flow, which can further improve the drainage efficiency and avoid damage to the drainage pipe caused by the water hammer effect generated when the drainage pipe starts and stops.

[0039] It should be noted that the time interval for cleaning the filter cavity 130 can be set according to the impurity situation in the water flow of the drainage pipe, and the filter cavity 130 is cleaned regularly, that is, the collection ball valve 300 is rotated regularly to discharge the impurities in the filter cavity 130, so as to maintain a good filtering effect of the building drainage filtering device.

[0040] Specifically, an induction disc is provided on the collection ball valve 300 of the present invention. The induction disc can sense the accumulation amount of impurities in the filter cavity 130. The position of the induction disc is symmetric with the position of the round hole 310 about the center of the collection ball valve 300. That is to say, the line connecting the center of the induction disc and the center of the round hole 310 passes through the center of the collection ball valve 300. When the round hole 310 of the collection ball valve 300 communicates with the impurity discharge hole 250 of the connecting flange 200, the induction disc is located between the filter cavity 130 and the connecting flange 200. When there are more impurities in the filter cavity 130 and it affects the filtering of the filter net 140, the filtering ability of the filter net 140 decreases, and the fluidity of the water passing through the filter net 140 becomes poor, which will cause the water pressure in the filter cavity 130 to increase and then be able to push the induction disc. A sensor (not shown in the figure) is provided on the induction disc. When the pressure value sensed by the sensor on the induction disc reaches the preset value, an alarm is issued, and the operator drives the collection ball valve 300 to rotate so as to connect the round hole 310 to allow the impurities in the filter cavity 130 to enter the collection ball valve 300, so as to clean the impurities in the filter cavity 130. After cleaning, the collection ball valve 300 is reset.

[0041] 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, the collection ball valve 300 can be rotated in time to discharge the impurities in the filter chamber 130, preventing excessive accumulation of impurities in the filter chamber 130.

[0042] More specifically, the induction disc of the present invention includes an elastic sheet 320 and a limiting disc 330. A through hole is provided at a position on the collection ball valve 300 that is symmetric about the center of the circular hole 310, 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, while the limiting disc 330 is arranged inside the collection 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 has elasticity, and the central 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 collection ball valve 300 is less than the radius of the collection ball valve 300. The sensor is located between the elastic sheet 320 and the limiting disc 330. When the water pressure increases, the elastic sheet 320 can be squeezed, and the bulging degree of the middle position of the elastic sheet 320 will weaken, thereby squeezing the sensor. When the middle position of the elastic sheet 320 approaches the horizontal state, it can contact the limiting disc 330. The limiting disc 330 limits the maximum deformation amount of the elastic sheet 320. When the elastic sheet 320 reaches the maximum deformation amount, the sensor on the limiting disc 330 can issue an alarm. The operator drives the collection 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 collection ball valve 300. After a period of time, it is rotated 180° again to connect the circular hole 310 to the impurity discharge hole 250 of the connection flange 200 to discharge the impurities in the collection ball valve 300.

[0043] It should be noted that the cavity inside the connection flange 200 in the present invention is a spherical cavity 210, which is adapted to the collection ball valve 300. And a ring groove is provided at a position inside the collection ball valve 300 close to the through hole, and the outer periphery of the limiting disc 330 is connected to the ring groove. The ring groove only hinders the axial movement of the limiting disc 330. When the bulging degree of the elastic sheet 320 in the present invention weakens, the four sides of the elastic sheet 320 can push against the inner periphery of the through hole, so that the size of the through hole of the collection ball valve 300 slightly increases. At this time, the limiting disc 330 does not limit the increase in the size of the through hole of the collection ball valve 300, so that the sealed connection between the collection ball valve 300 and the connection flange 200 is tighter, thereby preventing the leakage phenomenon caused by the increase in air pressure in the filter chamber 130.

[0044] Specifically, a sealing gasket 240 is provided between the inside of the connecting flange 200 and the outer periphery of the collecting ball valve 300. The sealing gasket 240 is fixed inside the spherical cavity 210 of the connecting flange 200. In this embodiment, there are two sealing gaskets 240, which are respectively arranged at positions in the connecting flange 200 close to the impurity discharge hole 250 and the communicating filter cavity 130. The two sealing gaskets 240 are arranged in parallel with each other, and the distance between the two sealing gaskets 240 is greater than the diameters of the round hole 310 and the through hole of the collecting ball valve 300. Moreover, the diameters of the two sealing gaskets 240 are greater than the sizes of the round hole 310 and the through hole of the collecting ball valve 300, so that the sealing gasket 240 can cross over the round hole 310 and the through hole of the collecting ball valve 300 and thus closely fit on the surface of the collecting ball valve 300. When the round hole 310 of the collecting ball valve 300 communicates with 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. The two sealing gaskets 240 are both in sliding seal cooperation with the surface of the collecting ball valve 300. And because the distance between the two sealing gaskets 240 is greater than the diameters of the round hole 310 and the through hole, as Figure 5 shown, when the collecting ball valve 300 rotates 90°, the edges of the round 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 round hole 310.

[0045] It should be noted that since one of the two sealing gaskets 240 is close to the filter cavity 130, when the middle bulge degree of the elastic piece 320 weakens, it indicates that the water pressure in the filter cavity 130 is relatively high. At this time, the sealing performance between the collecting ball valve 300 and the connecting flange 200 needs to be increased to prevent leakage. Therefore, the outer peripheral position of the elastic piece 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 performance between the collecting ball valve 300 and the connecting flange 200 and further preventing the occurrence of leakage.

[0046] In a further embodiment, the filter pipe 100 in the present invention is a Y-shaped pipe. The two upper ports of the Y-shaped pipe are respectively a water inlet end 110 and a water outlet end 120. The water inlet end 110 and the water outlet end 120 are connected to the drain pipe, so that the water inside the drain pipe can enter the filter pipe 100 through the water inlet end 110 and then return to the drain pipe from the water outlet end 120. The lower part of the Y-shaped pipe is a filter chamber 130. 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 vertical, but inclined, and the filter chamber 130 is inclined towards the water inlet end 110. The filter net 140 in the filter chamber 130 is inclined synchronously with the filter chamber 130 and in the same inclined direction. The inclined setting of the filter chamber 130 makes the water flow have a certain fluidity when entering the filter chamber 130, preventing impurities from directly depositing on the surface of the filter net 140, thereby reducing the possibility of blockage. And the inclined filter net 140 can help the impurities slide down smoothly under the action of the water flow, improving the self-cleaning ability of the filter net 140.

[0047] Specifically, the filter net 140 in this embodiment is cylindrical, and the side wall of the cylindrical filter net 140 is inclined. The filter chamber 130 in this embodiment is also cylindrical, and the cylindrical filter net 140 is adapted to the cylindrical filter chamber 130.

[0048] In a further embodiment, in order to be able to drive the collection ball valve 300 to rotate inside the connecting flange 200, two rotating rods 340 are fixedly arranged on the collection ball valve 300. The two rotating rods 340 are symmetrically arranged about the center of the collection ball valve 300. The axes of the two rotating rods 340 coincide. The axes of the two rotating rods 340 are perpendicular to the axis of the round hole 310. And the two rotating rods 340 are rotationally and sealedly arranged inside the connecting flange 200. One end of the two rotating rods 340 extends out of the connecting flange 200. When it is necessary to rotate the collection ball valve 300, the two rotating rods 340 can be driven. The two rotating rods 340 drive the collection ball valve 300 to rotate around the axis of the rotating rod 340.

[0049] Specifically, handwheels 350 are coaxially and fixedly arranged at one end of the two rotating rods 340 extending out of the connecting flange 200. An operator can drive the two rotating rods 340 to rotate by rotating the handwheels 350, and the two rotating rods 340 thus drive the collection ball valve 300 to rotate.

[0050] 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.

[0051] 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.

[0052] The specific working process of a building drainage filtration device provided by the present invention is described in combination with the above embodiments:

[0053] Install:

[0054] 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.

[0055] Normal filtering:

[0056] The water in the drainage pipe passes through the filtering chamber 130 in the filtering pipe 100. The filter screen 140 in the filtering chamber 130 can filter the flowing water. The filter screen 140 intercepts the impurities in the water in the filtering chamber 130. Due to the inclined settings of the filtering chamber 130 and the filter screen 140, the water flow in the filtering chamber 130 generates a certain fluidity, preventing the impurities from directly depositing on the surface of the filter screen 140, thereby reducing the possibility of blockage, and helping the impurities to slide down smoothly under the action of the water flow, improving the self-cleaning ability of the filter screen 140.

[0057] Impurity accumulation:

[0058] The impurities intercepted by the filter screen 140 will accumulate in the filtering chamber 130. Since a conical surface 220 is provided at the connection between the connecting flange 200 and the filtering chamber 130, the impurities will accumulate on the conical surface 220 under the action of gravity, and will gradually accumulate on the elastic piece 320 of the collection ball valve 300 as the impurities increase.

[0059] Regular impurity discharge:

[0060] The operator regularly discharges the impurities in the water. When discharging the impurities, the operator first removes the blocking plate 260, and then rotates the hand wheel 350 by 180°. When the hand wheel 350 rotates, it drives the rotating rod 340 to rotate synchronously. The rotating rod 340 drives the collection ball valve 300 to rotate 180° around the axis of the rotating rod 340. The round hole 310 of the collection ball valve 300 communicates with the small-end opening 230 of the conical surface 220 of the connecting flange 200. The impurities accumulated in the filtering chamber 130 slide into the collection ball valve 300 through the conical surface 220. After collecting for a period of time, the operator continues to rotate or rotate reversely by 180° to reset the collection ball valve 300. The round hole 310 of the collection ball valve 300 communicates with the impurity discharge hole 250 of the connecting flange 200 again. The impurities in the collection ball valve 300 are discharged through the round hole 310 and the impurity discharge hole 250, thus completing the operation of regular impurity discharge.

[0061] Alarm for forgetting to discharge impurities or increasing blockage speed:

[0062] If the operator is negligent and fails to regularly remove impurities, or if the accumulation rate of impurities in the filter chamber 130 is relatively fast due to an abnormal amount of impurities in the water flow and the filter chamber 130 becomes severely blocked before the regular impurity removal time, the amount of impurities accumulated in the filter chamber 130 is large, and the filtering capacity of the filter net 140 in the filter chamber 130 weakens, resulting in a decrease in the water flow rate. As a result, the water pressure in the filter chamber 130 increases. The increased water pressure in the filter chamber 130 can push against the elastic piece 320 on the collection ball valve 300. At this time, the raised part of the elastic piece 320 will weaken in its raised degree after being pushed, and the outer periphery of the elastic piece 320 can push against the inner periphery of the through hole of the collection ball valve 300, thereby slightly increasing the size of the collection ball valve 300 at this position, enabling the collection ball valve 300 at this position to push against the sealing gasket 240, thus increasing the sealing performance at this position. At the same time, as the raised degree of the elastic piece 320 gradually weakens, the sealing performance at this position can be gradually increased. When the raised degree of the elastic piece 320 reaches the minimum, that is, when the elastic piece 320 is restricted by the restricting disk 330, the sensor on the restricting disk 330 reaches the preset value, thereby issuing an alarm, enabling the operator to discover and remove impurities in a timely manner, and avoiding the filter chamber 130 from being in a severely blocked state all the time.

[0063] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, 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, it should be considered as the scope described in this specification.

[0064] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended 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, wherein the collecting ball valve is hollow inside and has a circular hole on the spherical surface, and the collecting ball valve is rotatably sealed inside the connecting flange. The collecting ball valve can be rotated 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; The collecting ball valve is provided with a sensing disk, the line connecting the center of the sensing disk and the center of the circular hole passes through the center of the collecting ball valve, and 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; 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.

2. The building drainage filtration device according to claim 1, 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.

3. 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.

4. The building drainage filtration device according to claim 3, characterized in that: The filter screen in the filter cavity is tilted synchronously with the filter cavity, and the tilting direction is the same.

5. 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.

6. The building drainage filtration device according to claim 5, characterized in that: The ends of the two rotating rods extending out of the connecting flange are coaxially and fixedly provided with hand wheels.

7. 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.

8. 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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