CN216813310U - Back flush water supply connector and water heater - Google Patents
Back flush water supply connector and water heater Download PDFInfo
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- CN216813310U CN216813310U CN202220492523.2U CN202220492523U CN216813310U CN 216813310 U CN216813310 U CN 216813310U CN 202220492523 U CN202220492523 U CN 202220492523U CN 216813310 U CN216813310 U CN 216813310U
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Abstract
The utility model provides a backwashing water inlet joint and a water heater, wherein the backwashing water inlet joint comprises a joint body, a filter screen and a state conversion component are arranged in the joint body, a water inlet pipe section is arranged at the upstream of the filter screen, a water outlet pipe section is arranged at the downstream of the state conversion component, and a sewage discharge pipeline is arranged between the filter screen and the state conversion component; the state conversion component is used for switching the backwashing water inlet joint between the filtering state and the flushing state and changing the surface of the filter screen facing the water inlet pipe section. The water heater comprises a backwashing water inlet joint. According to the backwashing water inlet joint and the water heater, the state of the backwashing water inlet joint is changed by arranging the state conversion component, the filter screen does not need to be detached from the joint body when impurities are accumulated and need to be cleaned after the filter screen is used for a long time, the direction of the filter screen is changed by the state conversion component, and the flow direction of water flow in the backwashing water inlet joint is changed, so that the filter screen can be washed, the cleaning step of the filter screen is simplified, and the maintenance cost of the backwashing water inlet joint in the water heater is reduced.
Description
Technical Field
The utility model relates to a backwashing water inlet joint and a water heater.
Background
As shown in FIG. 1, the water inlet connector 100 'of the water inlet end of the conventional water heater is provided with a filter screen 111' for filtering impurities and larger particles in the water. After long-time use, impurities are accumulated to cause the blockage of the filter screen 111', so that the water flow is small and the use experience of a user is influenced. In the prior art, after the filter screen 111 ' is blocked, the connection between the water inlet connector 100 ' of the water heater and the corrugated pipe is manually disassembled by using tools such as a wrench, a screw and the like, the filter screen 111 ' is disassembled from the water inlet pipe and cleaned, and water in the pipeline needs to be discharged in advance, otherwise, residual water in the water heater overflows and is inconvenient to maintain.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that in the prior art, after a filter screen in a water inlet joint of a water heater is used for a long time, impurities are accumulated, the filter screen needs to be detached and cleaned, and the maintenance is inconvenient, and provides a backwashing water inlet joint and a water heater.
The utility model solves the technical problems through the following technical scheme:
a backwash water inlet joint comprises a joint body, wherein a filter screen and a state conversion part are arranged in the joint body, a water inlet pipe section is arranged at the upstream of the filter screen, a water outlet pipe section is arranged at the downstream of the state conversion part, a sewage discharge pipeline is arranged on the joint body between the filter screen and the state conversion part, and the filter screen is provided with a front surface and a back surface; the state conversion component is used for switching the backwashing water inlet joint between a filtering state and a flushing state and changing the surface of the filter screen facing the water inlet pipe section; when the backwashing water inlet joint is in the filtering state, water in the water inlet pipe section flows through the filter screen through the front surface and flows into the water outlet pipe section; when the backwashing water inlet joint is in the flushing state, water in the water inlet pipe section flows through the filter screen through the reverse surface and flows into the sewage discharge pipeline.
In the scheme, the state of the backwashing water inlet joint is changed by arranging the state conversion component, the water outlet pipe section and the sewage discharge pipeline are arranged to respectively receive water filtered by the filter screen and water for cleaning the filter screen, the filter screen does not need to be detached from the joint body when impurities are accumulated and need to be cleaned after the filter screen is used for a long time, the filter screen can be washed by changing the direction of the filter screen and changing the flow direction of water flow in the backwashing water inlet joint by the state conversion component, the filter screen does not need to be detached from the water inlet joint, and the cleaning step of the filter screen is simplified.
Preferably, the state switching part comprises a fixed impeller and a movable impeller, the fixed impeller is fixedly connected to the joint body, and the movable impeller can rotate around the axis of the joint body to open or close a channel between the water inlet pipe section and the water outlet pipe section.
In the scheme, the fixed impeller and the movable impeller are arranged, and the movable impeller is driven to rotate in the joint body so as to change the relative position between the movable impeller and the fixed impeller, so that a channel between the water inlet pipe section and the water outlet pipe section can be conveniently opened or closed.
Preferably, when the backwash water inlet joint is in the filtering state, a gap exists between the movable impeller and the fixed impeller along the axial direction of the joint body so as to enable water flow to flow through the channel; when the backwashing water inlet joint is in the flushing state, blades of the movable impeller and the fixed impeller are staggered along the axial direction of the joint body to close the channel.
In the scheme, the movable impeller is driven to rotate in the joint body, and when the movable impeller and the fixed impeller are superposed along the axis direction of the joint body, a channel between the water inlet pipe section and the water outlet pipe section is opened, so that water flow can flow into the water outlet pipe section; when the movable impellers and the fixed impellers are arranged in a staggered mode, the channel between the water inlet pipe section and the water outlet pipe section is closed, and water flow cannot flow into the water outlet pipe section.
Preferably, the fixed impeller comprises two first fan-shaped blades which are oppositely arranged and have central angles of 90 degrees, and the two first fan-shaped blades are uniformly distributed along the circumferential direction; the movable impeller comprises two second fan-shaped blades with central angles of 90 degrees, and the two second fan-shaped blades are uniformly distributed along the circumferential direction.
In this scheme, through setting up two relative first fan-shaped blades as fixed impeller, set up two relative second fan-shaped blades as movable impeller, so set up, the rotational axis symmetry around movable impeller of the load of the water impact that two second fan-shaped blades received, and fixed impeller sets up two fan-shaped blades respectively with movable impeller, minimizes the influence to rivers under the circumstances of guaranteeing load balance.
Preferably, the state transition part further comprises a blocking part which can move inside the joint body to open or close a sewage draining outlet at the joint of the sewage draining pipeline and the joint body.
In this scheme, be used for opening or close the drain through setting up the stop part, conveniently control opening or closing of drain.
Preferably, the state conversion component further comprises a fixed impeller and a movable impeller, the fixed impeller is fixedly connected to the joint body, the movable impeller can rotate around the axis of the joint body, the blocking portion comprises a retaining ring, the retaining ring is fixedly connected to the periphery of the movable impeller, the movable impeller is arranged perpendicular to the axis of the joint body, the retaining ring is arranged in the direction parallel to the axis of the joint body, when the backwashing water inlet joint is in the filtering state, the retaining ring seals the sewage discharge port, and a gap is formed between the movable impeller and the fixed impeller in the axis direction of the joint body so that water can flow through the state conversion component; when the backwashing water inlet joint is in the flushing state, the check ring does not seal the sewage discharge port, and the movable impeller and the fixed impeller are arranged in a staggered mode around the axis direction of the joint body, so that water flow cannot flow to the state conversion component.
In the scheme, the check ring is fixedly connected with the movable impeller, when the state of the backwashing water inlet joint is adjusted, the on-off state between the water inlet pipe section and the water outlet pipe section is changed by adjusting the movable impeller and the fixed impeller, and meanwhile, the sewage draining exit needs to be opened or closed, so that the situations that the passage between the water inlet pipe section and the water outlet pipe section is disconnected and the sewage draining exit is also disconnected are avoided; or the water inlet pipe section is communicated with the water outlet pipe section, and the sewage discharge port is also opened; the movable impeller and the check ring are integrally arranged, so that when a channel between the water inlet pipe section and the water outlet pipe section is communicated, the sewage discharge port is closed; when the passage between the water inlet pipe section and the water outlet pipe section is disconnected, the sewage draining port is opened.
Preferably, the state conversion component further comprises a shifting plectrum, and the shifting plectrum is arranged outside the water flow passage of the backwashing water inlet joint and is used for driving the movable impeller to rotate in the joint body.
In this scheme, the plectrum setting of shifting is in the outside of rivers route, stirs the plectrum of shifting and drives movable impeller in the state of connecting the body internal rotation in order to change back flush water supply connector water circulation route, and the plectrum of shifting is manual to be stirred, simple structure, convenient and reliable.
Preferably, the state transition part further includes a filter screen overturning part connected to the filter screen, the filter screen overturning part is arranged in the joint body in a penetrating manner, the filter screen overturning part is in a straight rod shape, and the filter screen overturning part is used for driving the filter screen to overturn in the joint body so as to change the surface of the filter screen facing the water inlet pipe section.
In this scheme, set up filter screen upset piece and connect the filter screen and drive the face of filter screen upset in order to change the filter screen towards the pipeline section of intaking, simple structure connects reliably.
Preferably, the filter screen upset piece includes interconnect's operation portion and filter screen connecting portion, the operation portion is used for driving filter screen connecting portion rotate, the filter screen connect in filter screen connecting portion, filter screen connecting portion are located the water flow path inboard of joint body, the operation portion sets up the water flow path outside of joint body.
In this scheme, set up the operation portion in the outside of rivers route, when needing to change the face of filter screen orientation intake pipe section, rotate the operation portion and drive filter screen connecting portion and drive the filter screen upset, simple structure is reliable, and the operation is convenient, need not to unpack apart and connect the body and can realize the upset of filter screen.
Preferably, the diameter of the sewage conduit is smaller than the diameter of the water inlet pipe section.
In this scheme, sewage pipes's diameter is less than the diameter of the pipeline section of intaking for when washing the state, the water that washes the filter screen flows into the sewage pipes of less diameter from the pipeline section of intaking of great diameter, under the condition that need not other pressure boost measures, the increase washes the water pressure of filter screen, improves the washing effect to impurity on the filter screen.
Preferably, the central axes of the water inlet pipe section, the filter screen and the water outlet pipe section are in the same straight line.
In this scheme, when back flush water supply connector was in the filtration state, rivers were flowed through into water pipeline section, filter screen and play water pipeline section successively, through setting up into water pipeline section, filter screen and play water pipeline section in same axis department, reduced rivers because of turning to the disturbance that receives when connecting this internal flow, reduced rivers and connect this internal pressure drop when flowing.
A water heater includes a backwash water inlet joint.
In the scheme, the state of the backwashing water inlet joint is changed by arranging the state conversion component, the water outlet pipe section and the sewage discharge pipeline are arranged to respectively receive water filtered by the filter screen and water for cleaning the filter screen, after the filter screen is used for a long time, impurities are accumulated and the filter screen does not need to be detached from the joint body when the filter screen needs to be cleaned, the direction of the filter screen is changed by the state conversion component, the flow direction of water flow inside the backwashing water inlet joint is changed, the filter screen can be washed, the filter screen does not need to be detached from the water inlet joint, the cleaning step of the filter screen is simplified, and the maintenance cost of the water inlet joint in the water heater is reduced.
The positive progress effects of the utility model are as follows:
according to the backwashing water inlet joint and the water heater, the state of the backwashing water inlet joint is changed by arranging the state conversion component, the water outlet pipe section and the sewage discharge pipeline are arranged for respectively receiving water filtered by the filter screen and water for cleaning the filter screen, the filter screen does not need to be detached from the joint body when impurities are accumulated and need to be cleaned after the filter screen is used for a long time, the filter screen can be washed by changing the direction of the filter screen and changing the flow direction of water flow in the backwashing water inlet joint through the state conversion component, the filter screen does not need to be detached from the water inlet joint, the cleaning step of the filter screen is simplified, and the maintenance cost of the water inlet joint in the water heater is reduced.
Drawings
Fig. 1 is a schematic view of the internal structure of a water inlet joint in the prior art.
Fig. 2 is an external state view of the backwash water inlet joint according to an embodiment of the present invention in a filtering state.
Fig. 3 is a schematic view of the internal structure of the backwash water inlet joint according to an embodiment of the present invention in a filtration state.
Fig. 4 is a schematic structural view of the backwash water inlet joint in fig. 3 as seen from direction a.
Fig. 5 is a schematic structural diagram of a state transition component when the backwashing water inlet joint is in a filtering state according to an embodiment of the utility model.
Fig. 6 is an external state view of the backwashing water inlet joint in a flushing state according to an embodiment of the utility model.
Fig. 7 is a schematic view of the internal structure of the backwash water inlet joint in a flushing state according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of the backwash water inlet joint in fig. 7 as seen from direction a.
Fig. 9 is a schematic structural diagram of the state transition component when the backwashing water inlet joint is in a flushing state according to an embodiment of the utility model.
Description of reference numerals:
in the prior art:
water inlet joint of 100'
Filter screen 111'
In the utility model:
backwash water inlet joint 100
Intake pipe section 112
Drain outlet 115
Fixed impeller 121
Stopper 123
Filter screen turnover part 125
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
As shown in fig. 2 and 3, the present embodiment provides a backwash water inlet connection 100. The backwash water inlet joint 100 includes a joint body 110, and a pipe through which a water flow passes is provided inside the joint body 110. The joint body 110 is internally provided with a filter screen 111 and a state conversion component 120, the filter screen 111 is arranged at the upstream of the state conversion component 120, the upstream of the filter screen 111 is provided with a water inlet pipe section 112, and the downstream of the state conversion component 120 is provided with a water outlet pipe section 113. As shown in fig. 3, the water flows in from the upper portion of the backwash water inlet joint 100, passes through the water inlet pipe section 112, the strainer 111, the state switching member 120, and the water outlet pipe section 113 in order, and then flows out of the joint body 110. A drain pipe 114 is formed on the joint body 110 between the strainer 111 and the state transition member 120, and the drain pipe 114 is used to drain water with impurities after washing the strainer 111 out of the joint body 110. The strainer 111 has a front side and a back side, and in this embodiment, the inward concave side of the strainer 111 is the front side, and the outward convex side of the strainer 111 is the back side. When the backwash water inlet joint 100 is in a filtering state, as shown in fig. 3, the front side of the filter screen 111 meets the water flow from the water inlet pipe section 112, and the water flow continues to flow downstream after being filtered by the concave surface; when the backwash water inlet joint 100 is in a flushing state, as shown in fig. 7, the reverse side of the filter screen 111 faces the water flow from the water inlet pipe section 112, and the water flow flushes the convex side of the filter screen 111 and then continues to flow downstream.
The backwash water inlet joint 100 of the present embodiment is configured to change the state of the backwash water inlet joint 100 by providing a state switching member 120 therein. The water outlet pipe section 113 and the sewage discharge pipe 114 are arranged for respectively receiving water filtered by the filter screen 111 and water for cleaning the filter screen 111, the filter screen 111 does not need to be detached from the connector body 110 when impurities are accumulated after the filter screen 111 is used for a long time and the filter screen 111 needs to be cleaned, the direction of the filter screen 111 is changed through the state conversion component 120, the flow direction of water flow inside the backwashing water inlet connector 100 is changed, the filter screen 111 can be cleaned, the filter screen 111 does not need to be detached from the backwashing water inlet connector 100, and the cleaning step of the filter screen 111 is simplified.
The state transition part 120 includes a fixed impeller 121 and a movable impeller 122. As shown in fig. 4, the fixed impeller 121 is fixedly coupled to the joint body 110. The fixed impeller 121 includes two first fan-shaped blades that are disposed opposite to each other and have a central angle of 90 degrees, and the two first fan-shaped blades are uniformly distributed in the circumferential direction. The outer edges of the two first fan-shaped blades of the fixed impeller 121 are fixedly connected to the inside of the joint body 110, and the two first fan-shaped blades are connected to each other through a fixed disk. The central angle between the adjacent edges of the two first fan-shaped blades is 90 degrees. The movable impeller 122 is rotatable about the axis of the joint body 110 to open or close a passage between the water inlet pipe section 112 and the water outlet pipe section 113. The movable impeller 122 includes two second fan-shaped blades having a central angle of 90 °, and the two second fan-shaped blades are uniformly distributed along the circumferential direction. The rotation centers of the two second fan-shaped blades of the movable impeller 122 are overlapped with the center of the fixed impeller 121, that is, the two second fan-shaped blades rotate around the symmetric centers of the two first fan-shaped blades; in addition, the water flow channel inside the joint body 110 is a circular channel, and the rotation centers of the two second fan-shaped blades are also located at the center of the circle of the water flow channel inside the joint body 110. The first fan-shaped blade and the second fan-shaped blade are identical in shape and number. Alternatively, the number of the fan-shaped blades of the movable impeller 122 and the fixed impeller 121 is not limited to 2, and may be one or three or more, and the central angle of the fan-shaped blades is not limited to 90 °, and the passage can be blocked as long as the sum of the central angles of the fan-shaped blades of the movable impeller 122 and the fixed impeller 121 is equal to or greater than 360 °.
When backwash water inlet joint 100 is in a filtration state, as shown in fig. 5, a gap exists between movable impeller 122 and fixed impeller 121 in the axial direction of joint body 110 to allow water flow through the passage. Two first fan-shaped blades and two second fan-shaped blade joint body 110's axial direction align, and the clearance between first fan-shaped blade and the second fan-shaped blade also aligns, and rivers can flow through from the clearance between the second fan-shaped blade and the clearance between the first fan-shaped blade successively.
When the backwash water inlet joint 100 is in a flushing state, as shown in fig. 8 and 9, the blades of the movable impeller 122 and the fixed impeller 121 are staggered in the axial direction of the joint body 110 to close the passage between the water inlet pipe section 112 and the water outlet pipe section 113. Two first fan-shaped blades and the crisscross setting of the axis direction of two second fan-shaped blade joint bodies 110, the second fan-shaped blade sets up in the clearance department of first fan-shaped blade, and first fan-shaped blade is located the clearance department of second fan-shaped blade, and rivers can't pass first fan-shaped blade and second fan-shaped blade.
As shown in fig. 7, the state transition member 120 further includes a blocking portion 123, and the blocking portion 123 can move inside the joint body 110 to open or close the soil discharge opening 115 where the soil discharge pipe 114 and the joint body 110 are connected. The connection port on the connector body 110 and the sewage pipe 114 is a sewage drain 115. The blocking portion 123 serves to block the drain outlet 115. When the backwashing water inlet joint 100 is in a filtering state and the blocking part 123 is arranged at the sewage discharge port 115, the blocking part 123 blocks water flow from the joint body 110 to the sewage discharge pipeline 114, and the water flow flows to the water outlet pipe section 113 after passing through the movable impeller 122 and the fixed impeller 121 after being filtered; when the backwashing water inlet joint 100 is in a flushing state, the blocking part 123 is not arranged at the sewage draining exit 115, at this time, the sewage draining pipeline 114 is communicated with a water flow channel in the joint body 110, the movable impeller 122 and the fixed impeller 121 are arranged in a staggered manner to prevent water flow from flowing to the water outlet pipe section 113, and the water flow flushes the filter screen 111 and then flows into the sewage draining pipeline 114 through the sewage draining exit 115.
As shown in fig. 9, the blocking portion 123 includes a stopper ring. The retainer ring is fixedly connected to the outer periphery of the movable impeller 122, the movable impeller 122 is arranged perpendicular to the axial direction of the joint body 110, and the retainer ring is arranged in a direction parallel to the axial direction of the joint body 110. When the backwashing water inlet joint 100 is in a filtering state, the baffle ring closes the sewage outlet 115, and a gap exists between the movable impeller 122 and the fixed impeller 121 along the axial direction of the joint body 110 so that water can flow through the state conversion component 120; when the backwashing water inlet joint 100 is in a flushing state, an opening is formed in the check ring, the opening in the check ring is opposite to the sewage discharge port 115, and the check ring does not seal the sewage discharge port 115. The movable impeller 122 and the fixed impeller 121 are alternately arranged around the axial direction of the joint body 110, so that water cannot flow to the state switching part 120 and flows into the sewage pipe 114 through the opening on the retainer ring.
As shown in fig. 2 and 6, the state switching element 120 further includes a shift paddle 124, and the shift paddle 124 is disposed outside the water flow path of the backwash water inlet connector 100 and is used for driving the movable impeller 122 to rotate in the connector body 110. When the backwash water inlet connector 100 needs to be adjusted between the filtration state and the flushing state, the external shift plate 124 is shifted to the "blowdown" gear or the "water through" gear. When the shifting plectrum 124 is shifted to a 'sewage discharge' gear, the backwashing water inlet joint 100 is in a flushing state, the fixed impeller 121 and the movable impeller 122 are staggered, water cannot flow into the water outlet pipe section 113, the blocking part 123 is separated from the sewage discharge port 115, the sewage discharge pipeline 114 is communicated with the interior of the joint body 110, and water in the water inlet pipe section 112 flushes the filter screen 111 and then flows out of the backwashing water inlet joint 100 through the sewage discharge pipeline 114; when the shifting plectrum 124 is shifted to the 'water through' gear, the backwashing water inlet joint 100 is in a filtering state, the fixed impeller 121 and the movable impeller 122 are oppositely arranged, water flows into the water outlet pipe section 113, the blocking part 123 blocks the sewage discharge port 115, and the water flow passage inside the sewage discharge pipe section and the joint body 110 is disconnected.
The state transition member 120 further includes a screen flip 125 coupled to the screen 111. The filter screen turnover part 125 is inserted into the connector body 110. The screen inverter 125 is a straight rod, and the screen inverter 125 is used to drive the screen 111 to invert within the adapter body 110 to change the face of the screen 111 toward the intake pipe section 112. The screen inverter 125 includes an operation part 1251 and a screen connecting part 1252 connected to each other. The operation unit 1251 is configured to rotate the screen connecting portion 1252, as shown in fig. 7, the screen 111 is connected to the screen connecting portion 1252, the screen connecting portion 1252 is located inside the water passage of the joint body 110, and as shown in fig. 6, the operation unit 1251 is provided outside the water passage of the joint body 110. Filter screen connecting portion 1252 is the straight-bar, and filter screen connecting portion 1252 fixed connection is in filter screen 111. The operation unit 1251 is provided outside the joint body 110, and the operation unit 1251 has a "filtering" stage and a "backwashing" stage. When the filter screen 111 needs to be washed, the operating part 1251 is rotated to a 'back-washing' position, at this time, as shown in fig. 7, the filter screen 111 is shown in fig. 7, water in the water inlet pipe section 112 firstly flows to the reverse side of the filter screen 111, namely, the convex side of the filter screen 111, and the water flow washes down impurities on the filter screen 111; when the water flow needs to be filtered by the screen 111, the operating unit 1251 is rotated to the "filtering" position, and at this time, as shown in fig. 3, the water in the water inlet pipe section 112 first flows to the front surface of the screen 111, i.e., the concave surface of the screen 111, and the screen 111 has a filtering effect on the water flow.
In this embodiment, the diameter of the waste pipe 114 is smaller than the diameter of the intake pipe section 112. Because the water inflow of the water inlet pipe section 112 is constant, when the connector is in a flushing state, the diameter of the sewage pipeline 114 is smaller than that of the water inlet pipe section 112, so that when the connector is in the flushing state, the water pressure in the connector body 110 is higher, and the flushing effect on the filter screen 111 is improved.
In other embodiments, the diameter of the waste pipe 114 may be the same as the intake pipe section 112.
In the present embodiment, the central axes of the water inlet pipe section 112, the filter screen 111 and the water outlet pipe section 113 are in the same straight line. The water inlet pipe section 112 and the water outlet pipe section 113 are all straight pipe sections, and the water inlet pipe section 112 and the water outlet pipe section 113 are coaxially arranged, so that disturbance caused by steering when water flows in the joint body 110 is reduced, and pressure drop when the water flows in the joint body 110 is reduced.
In other embodiments, the central axes of the water inlet pipe section 112, the filter screen 111 and the water outlet pipe section 113 may not be in the same straight line.
The embodiment also provides a water heater, and a back flush water inlet joint 100 is arranged in the water inlet pipe of the water heater. The water heater comprises a water inlet pipe, a heating part and a water outlet pipe, wherein tap water to be heated flows into the heating part through the water inlet pipe, and flows into the water outlet pipe after being heated by gas combustion or other forms in the heating part. The backwashing water inlet joint 100 arranged in the water inlet pipe filters water flow in the water inlet pipe, after the backwashing water inlet joint 100 is used for a long time, impurities are accumulated to block the filter screen 111, the gear shifting piece 124 on the outer side of the backwashing water inlet joint 100 is shifted to a sewage discharge gear, the operation part 1251 is rotated to a backwashing position, the filter screen 111 can be washed, water with impurities flows through the sewage discharge pipeline 114 and is discharged out of the backwashing water inlet joint 100, washing of the filter screen 111 is completed, the filter screen 111 does not need to be detached from the interior of the joint body 110 for washing like the prior art, and the washing efficiency of the filter screen 111 is improved.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (12)
1. A backwashing water inlet joint is characterized by comprising a joint body, wherein a filter screen and a state conversion component are arranged in the joint body, a water inlet pipe section is arranged at the upstream of the filter screen, a water outlet pipe section is arranged at the downstream of the state conversion component, a sewage discharge pipeline is arranged on the joint body between the filter screen and the state conversion component, and the filter screen is provided with a front surface and a back surface; the state conversion component is used for switching the backwashing water inlet joint between a filtering state and a flushing state and changing the surface of the filter screen facing the water inlet pipe section; when the backwashing water inlet joint is in the filtering state, water in the water inlet pipe section flows through the filter screen through the front side and flows into the water outlet pipe section; when the backwashing water inlet joint is in the flushing state, water in the water inlet pipe section flows through the filter screen through the reverse surface and flows into the sewage discharge pipeline.
2. The backwash water inlet joint as defined in claim 1, wherein said state switching means comprises a fixed impeller fixedly connected to said joint body and a movable impeller rotatable about an axis of said joint body to open or close a passage between said water inlet section and said water outlet section.
3. The backwash water inlet joint as defined in claim 2 wherein, when the backwash water inlet joint is in the filtration state, a gap exists between the movable impeller and the fixed impeller in the axial direction of the joint body to allow water flow through the passage; when the backwashing water inlet joint is in the flushing state, blades of the movable impeller and the fixed impeller are staggered along the axial direction of the joint body to close the channel.
4. The backwash water inlet joint as defined in claim 3, wherein said fixed impeller comprises two first fan-shaped blades disposed opposite to each other with a central angle of 90 °, said two first fan-shaped blades being uniformly distributed in a circumferential direction; the movable impeller comprises two second fan-shaped blades with central angles of 90 degrees, and the two second fan-shaped blades are uniformly distributed along the circumferential direction.
5. The backwash water inlet joint as defined in claim 1, wherein the state transition member further comprises a blocking portion movable inside the joint body to open or close a drain at a junction of the sewage conduit and the joint body.
6. The backwash water inlet joint as defined in claim 5, wherein the state switching member further comprises a fixed impeller fixedly connected to the joint body and a movable impeller rotatable about an axis of the joint body, the blocking portion comprises a retainer ring fixedly connected to an outer periphery of the movable impeller, the movable impeller is arranged perpendicular to the axis of the joint body, the retainer ring is arranged in a direction parallel to the axis of the joint body, when the backwash water inlet joint is in the filtration state, the retainer ring closes the drain port, and a gap is present between the movable impeller and the fixed impeller in the direction of the axis of the joint body so that water can flow through the state switching member; when the backwashing water inlet joint is in the flushing state, the check ring does not seal the sewage discharge port, and the movable impeller and the fixed impeller are arranged in a staggered mode around the axis direction of the joint body, so that water flow cannot flow to the state conversion component.
7. The backwash water inlet joint as defined in claim 6, wherein said state switching means further comprises a shift paddle arranged outside the water flow path of said backwash water inlet joint for driving said movable impeller to rotate within said joint body.
8. The backwash water inlet connector as in claim 1 wherein the state transition member further comprises a screen flip member connected to the screen, the screen flip member being disposed through the connector body, the screen flip member being in the form of a straight bar and the screen flip member being adapted to drive the screen in the connector body to flip to change the face of the screen facing the inlet pipe section.
9. The backwash water inlet joint as defined in claim 8, wherein said screen turnover member comprises an operation portion and a screen connecting portion connected to each other, said operation portion being adapted to rotate said screen connecting portion, said screen being connected to said screen connecting portion, said screen connecting portion being located inside a water flow path of said joint body, said operation portion being located outside the water flow path of said joint body.
10. The backwash water inlet joint as defined in claim 1 wherein the diameter of said blowdown conduit is less than the diameter of said water inlet pipe section.
11. The backwash water inlet joint as defined in claim 1 wherein the central axes of said inlet section, said screen and said outlet section are collinear.
12. A water heater comprising the backwash water inlet joint as defined in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220492523.2U CN216813310U (en) | 2022-03-08 | 2022-03-08 | Back flush water supply connector and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220492523.2U CN216813310U (en) | 2022-03-08 | 2022-03-08 | Back flush water supply connector and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216813310U true CN216813310U (en) | 2022-06-24 |
Family
ID=82044588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220492523.2U Active CN216813310U (en) | 2022-03-08 | 2022-03-08 | Back flush water supply connector and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216813310U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115536137A (en) * | 2022-08-17 | 2022-12-30 | 深圳市万木水务有限公司 | Anti-clogging water quality purification device and method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115536137A (en) * | 2022-08-17 | 2022-12-30 | 深圳市万木水务有限公司 | Anti-clogging water quality purification device and method thereof |
| CN115536137B (en) * | 2022-08-17 | 2024-05-24 | 深圳市万木水务有限公司 | Anti-blocking water quality purifying device and method thereof |
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