Multi-functional Central Prefilter

Abstract

The present invention discloses a multifunctional central pre-filter, which includes a valve body and a valve core. The valve core can float up and down to switch the water path. A check valve core is arranged inside the valve core. Two intersecting circular flanges are installed on the side wall of the valve core close to the water outlet. Sealing gaskets are arranged inside both of the two circular flanges, and the sealing gaskets are in sealing contact with the water outlet. A water outlet hole penetrating through the upper sealing gasket and the side wall of the valve core is formed on the circular flange above the valve core. A cup body is connected to the bottom of the valve body, and a filter element is arranged inside the cup body. A sewage discharge port is arranged at the bottom of the cup body, and a sealing head is arranged on the sewage discharge port. A valve cover is installed on the top of the valve body, and a lead screw connected to a hand wheel is arranged on the valve cover, and the lead screw is connected to the valve core. A cleaning device is installed on the inner wall at the contact position between the valve body and the cup body, and a flushing brush strip is arranged on the cleaning device, and the flushing brush strip is arranged in parallel on the outer side of the filter element. The multifunctional central pre-filter provided by the present invention can realize automatic cleaning and sewage discharge after mechanical one-key start, with simple operation and thorough cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and particularly to a multifunctional central pre-filter. Background Art

[0002] When the pre-filter is actually in use, after running for a period of time, a lot of dirt will remain inside it. Therefore, it needs to be cleaned in time. Currently, the existing pre-filters need to be manually cleaned. First, open the bottom sewage drain ball valve, and then manually rotate the cleaning brush. This operation is time-consuming, laborious and the cleaning is not thorough. The operation is complex, the steps are cumbersome, the cleaning is not complete, and it is easy to cause secondary pollution. Summary of the Invention

[0003] The purpose of the present invention is to provide a multifunctional central pre-filter to solve the above problems existing in the prior art, so that the filter can achieve automatic cleaning and sewage discharge after mechanical one-key start, with simple operation and thorough cleaning.

[0004] To achieve the above purpose, the present invention provides the following solution:

[0005] The present invention provides a multifunctional central pre-filter, including a valve body. An inlet is provided on one side of the valve body, and an outlet is provided on the other side. A valve core is arranged inside the valve body, and a check valve core is arranged inside the valve core. Two intersecting circular flanges are installed on the side wall of the valve core close to the outlet side. Sealing gaskets are arranged inside both of the two circular flanges, and the sealing gaskets are in sealing contact with the outlet. A water outlet hole penetrating through the upper sealing gasket and the side wall of the valve core is provided on the circular flange above the valve core. An annular flange is installed on the side wall of the valve core close to the inlet side. A sealing gasket is arranged inside the annular flange, and the sealing gasket is in sealing contact with the inlet. An inlet hole penetrating through the sealing gasket and the side wall of the valve core is provided on the annular flange. The annular flange has the same height as the circular flange located below the valve core. A cup body is hermetically connected to the bottom of the valve body. A filter element is arranged inside the cup body, and the top of the filter element is fixedly connected to the valve core. A sewage drain port is provided at the bottom of the cup body, and a sealing head is arranged on the sewage drain port. The sealing head is fixedly connected to the bottom of the filter element. A valve cover is installed on the top of the valve body. A lead screw passes through the valve cover, the bottom end of the lead screw is fixedly connected to the top of the valve core, and the top end of the lead screw is connected to a handwheel. A cleaning device is installed on the inner wall at the contact position between the valve body and the cup body. Four water outlet channels are provided on the side wall at the lower end of the valve core, and the water outlet channels are located at the position of the cleaning device. A flushing brush strip is arranged on the cleaning device, and the flushing brush strip is arranged in parallel on the outside of the filter element. The valve core can switch the water path by moving up and down.

[0006] Optionally, the cleaning device includes a base sleeved outside the valve body. A counter-thrust stator is fixedly installed below the base. The counter-thrust stator is a ring-shaped structure with annular sawteeth on its inner wall. An annular centrifugal impeller seat is movably arranged inside the counter-thrust stator. A ring-shaped centrifugal impeller is connected below the centrifugal impeller seat. A bearing ring is fixedly installed below the centrifugal impeller. The ring diameter of the bearing ring is larger than that of the centrifugal impeller. Symmetrical connection through-holes are formed in the centrifugal impeller seat and the centrifugal impeller. A connecting rod passes through the connection through-holes. The connecting rod is located inside the bearing ring and has no interference with the bearing ring. After passing through the inner ring of the bearing ring, the connecting rod is connected to the flushing brush strip; the centrifugal impeller includes an integrally formed upper wheel and a lower wheel. The inner diameter of the circular ring of the lower wheel is smaller than that of the upper wheel. Two symmetrical arc-shaped grooves are formed in the upper wheel. The arc-shaped grooves are horizontally arranged and the groove direction of the arc-shaped grooves is opposite to the tooth direction of the annular sawteeth of the counter-thrust stator.

[0007] Optionally, a filter net is provided on the outer ring of the filter element.

[0008] Optionally, external threads are formed on the outer wall of the counter-thrust stator, and internal threads are formed on the inner wall of the valve body. The counter-thrust stator and the valve body are fixedly connected by threads.

[0009] Optionally, an adapter is installed below the cup body, and a lower decorative cover is installed outside the adapter.

[0010] Optionally, front and rear decorative covers are arranged on the outer sides of the valve cover and the valve body, and the handwheel is arranged on the front and rear decorative covers.

[0011] Optionally, a pressure gauge is installed on the valve body, and the pressure gauge is connected to the water inlet.

[0012] Optionally, the base is a cylindrical structure. A bearing plate is sleeved outside the base. A plurality of strip-shaped holes are formed in the bearing plate. The connection end of the filter element and the valve core is located inside the base.

[0013] The present invention has achieved the following technical effects compared with the prior art:

[0014] The multifunctional central pre-filter provided by the present invention can make full use of the self-water pressure in the tap water pipeline to push the centrifugal impeller and drive the cleaning brush to scrape and wash the scale, rust, red worms, sediment, etc. on the inner wall of the valve body and the filter net core at high speed; the operation is simple, one-step in place, the cleaning is thorough, and secondary pollution is eliminated. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the multifunctional central pre-filter of the present invention;

[0017] Figure 2 It is a cross-sectional view of the multifunctional central pre-filter of the present invention;

[0018] Figure 3 It is a schematic diagram of the base structure of the multifunctional central pre-filter of the present invention;

[0019] Figure 4 It is a schematic diagram of the reaction force stator structure of the multifunctional central pre-filter of the present invention;

[0020] Figure 5 It is a schematic diagram of the centrifugal impeller structure of the multifunctional central pre-filter of the present invention;

[0021] Figure 6 It is a schematic diagram of the filter element structure of the multifunctional central pre-filter of the present invention;

[0022] Figure 7 It is a schematic diagram of the cup body structure of the multifunctional central pre-filter of the present invention;

[0023] Figure 8 It is a schematic diagram of the valve core structure of the multifunctional central pre-filter of the present invention;

[0024] Figure 9 It is a schematic diagram of the valve body structure of the multifunctional central pre-filter of the present invention;

[0025] Among them, 1 is the valve body, 2 is the water inlet, 3 is the water outlet, 4 is the valve core, 5 is the circular flange, 6 is the water outlet hole, 7 is the cup body, 8 is the filter element, 9 is the sewage outlet, 10 is the sealing head, 11 is the valve cover, 12 is the lead screw, 13 is the hand wheel, 14 is the flushing brush strip, 15 is the base, 16 is the bearing plate, 17 is the strip hole, 18 is the reaction force stator, 19 is the centrifugal impeller seat, 20 is the centrifugal impeller, 21 is the connecting through hole, 22 is the connecting rod, 23 is the arc groove, 24 is the adapter, 25 is the lower decorative cover, 26 is the front and rear decorative covers, 27 is the mounting hole, 28 is the annular flange. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] The object of the present invention is to provide a multifunctional central pre-filter to solve the problems existing in the above-mentioned prior art, so that the filter can realize automatic cleaning and sewage discharge after mechanical one-key start, with simple operation and thorough cleaning.

[0028] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The present invention provides a multifunctional central pre-filter, as Figures 1-9 shown, which includes a valve body 1. An inlet 2 is provided on one side of the valve body 1, and an outlet 3 is provided on the other side. Pipes are installed outside both the inlet 2 and the outlet 3, and a sealing gasket and a hexagonal connection cap are sleeved on the pipes; a valve core 4 is arranged inside the valve body 1. Two intersecting circular flanges 5 are installed on the side wall of the valve core 4 close to the outlet 3. The intersection of the two circular flanges 5 is communicated, and the overall cross-section is an "8" - shaped structure with a middle connection. Sealing gaskets are arranged inside both of the two circular flanges 5. The thickness of the sealing gasket is the same as the height of the circular flange 5, so that the sealing gasket can be in sealing contact with the outlet 3; a water outlet hole 6 is opened on the circular flange 5 above the valve core 4, passing through the upper sealing gasket and the side wall of the valve core 4, so that water flow can flow out from the water outlet hole 6 through the outlet 3. An annular flange 58 is installed on the side wall of the valve core 4 close to the inlet 2. A sealing gasket is arranged inside the annular flange 28. The sealing gasket can be in sealing contact with the inlet 2. An inlet hole is opened on the annular flange 58, passing through the sealing gasket and the side wall of the valve core 4. The annular flange 28 has the same height as the circular flange below the valve core 4; the bottom of the valve body 1 is hermetically connected with a cup body 7 by threads, and a sealing gasket is provided at the connection end. A filter element 8 is arranged inside the cup body 7, and a filter net is arranged outside the filter element 8. The top of the filter element 8 is fixedly connected with the valve core 4 by threads; a sewage discharge port 9 is opened at the bottom of the cup body 7, and a sealing head 10 is arranged on the sewage discharge port 9. The sealing head 10 is fixedly connected with the bottom of the filter element 8; a valve cover 11 is installed on the top of the valve body 1. A lead screw 12 passes through the valve cover 11, and a sealing gasket is arranged between the valve cover 11 and the lead screw 12, so that the two can be hermetically connected. The bottom end of the lead screw 12 is fixedly connected with the top of the valve core 4, and the top end of the lead screw 12 is connected with a hand wheel 13; a cleaning device is installed on the inner wall of the valve body 1 at the contact position with the cup body 7. A flushing brush strip 14 is arranged on the cleaning device, and the flushing brush strip 14 is arranged parallel to the outside of the filter element 8.

[0030] Specifically, the cleaning device includes a base 15 sleeved outside the valve body 1. The base 15 is of a cylindrical structure. An integrally formed bearing plate 16 is sleeved outside the base 15. A plurality of strip-shaped holes 17 are formed in the bearing plate 16. The connection end of the filter element 8 and the valve core 4 is located inside the base 15. A counter-thrust stator 18 is fixedly installed below the base 15. The counter-thrust stator 18 is of an annular structure with annular sawteeth provided on its inner wall. An annular centrifugal impeller seat 19 is movably arranged inside the counter-thrust stator 18. A ring-shaped centrifugal impeller 20 is connected below the centrifugal impeller seat 19. A bearing ring is fixedly installed below the centrifugal impeller 20. The bearing ring is fixedly installed on the inner wall of the valve body 1. The bearing ring can bear the centrifugal impeller 20 and at the same time enable the centrifugal impeller 20 to rotate on the bearing ring. Symmetric connection through holes 21 are formed in the centrifugal impeller seat 19 and the centrifugal impeller 20. A connecting rod 22 is inserted through the connection through hole 21. The connecting rod 22 passes through the inner ring of the bearing ring and is connected to the flushing brush strip 14. When connecting, the flushing brush strip 14 is inserted into the connecting rod 22, and the end is fixed to the connecting rod 22 with an "E"-shaped card to fix the flushing brush strip 14. And the connecting rod 22 is located inside the bearing ring and has no interference with the bearing ring. The centrifugal impeller 20 includes an integrally formed upper wheel and a lower wheel. The inner diameter of the circular ring of the lower wheel is smaller than that of the circular ring of the upper wheel. Two symmetric arc-shaped grooves 23 are formed in the upper wheel. The arc-shaped grooves 23 penetrate through the two side walls of the upper wheel. The arc-shaped grooves 23 are horizontally arranged and the groove direction of the arc-shaped grooves 23 is opposite to the tooth direction of the annular sawteeth of the counter-thrust stator 18.

[0031] Further preferably, external threads are provided on the outer wall of the counter-thrust stator 18, and internal threads are provided on the inner wall of the valve body 1. The counter-thrust stator 18 and the valve body 1 are fixedly connected by threads. An adapter 24 is installed below the cup body 7, and a lower decorative cover 25 is installed outside the adapter 24. Front and rear decorative covers 26 are provided on the outer sides of the valve cover 11 and the valve body 1. The handwheel 13 is arranged on the front and rear decorative covers 26. An installation hole 27 is formed in the valve body 1, and a pressure gauge is installed in the installation hole. The pressure gauge is connected to the water inlet 2.

[0032] The structure of the present invention is simple and easy to use. A control device is connected to the handwheel. During filtration, the control device is started mechanically with one key to control the rotation of the handwheel 13, so that the lead screw 12 drives the valve core 4 to move up and down until the water outlet 3 of the valve body 1 is in sealed contact with the circular flange 5 having a water outlet hole 6 on the valve core 4. At this time, the sealing head 10 at the bottom of the filter element 8 is in sealed contact with the sewage outlet 9, and the sewage outlet 9 is sealed and not communicated. And at this time, the annular flange 28 is located below the water inlet, and the sealing gasket of the annular flange 28 is in sealed contact with the side wall of the valve body 1 and is not communicated with the water inlet 2 of the valve body 1. Thus, water flows in from the water inlet 2 of the valve body 1, flows downward along the side wall of the valve core 4, flows downward through the strip-shaped hole 17 of the base 15 to the filter element 8 in the cup body 7, and enters the filter element 8 after being filtered by the filter screen. Because the cup body 7 and the valve body 1, and the valve body 1 and the valve core 4 are all sealedly connected, the finally filtered clear water enters the valve core 4 through the filter element 8 under the continuous water pressure at the water inlet, and flows into the water outlet 3 of the valve body 1 through the water outlet hole 6 on the side wall of the valve core 4, and finally flows out through the pipeline at the water outlet 3 of the valve body 1.

[0033] When the filter needs to be cleaned, turn the handwheel 13, and the lead screw 12 drives the valve core 4, the filter element 8 and the sealing head 10 to rise until the water outlet 3 of the valve body 1 is in sealing contact with the circular flange 5 without a water outlet hole on the valve core 4. At this time, the water outlet 3 of the valve body 1 is in sealing contact with the valve core 4 and not connected, the annular flange of the valve core 4 is aligned with and connected to the water inlet 2 of the valve body 1, the water flow path of the valve core 4 and the valve body 1 is changed, the sealing head 10 rises, so that the sewage outlet 9 is opened, and the sewage at the sewage outlet 9 can flow out through the sewage outlet 9 and the adapter 24; when cleaning the filter, open the water inlet 2 of the valve body 1, the water flows through the water inlet 2 and into the inside of the valve core 4 through the water inlet hole opened by the annular flange 28, and flows downward to the water outlet channel inside the valve core 4. At this time, the water outlet channel is located between the upper wheel and the lower wheel of the centrifugal impeller 20. Therefore, the water inside the valve core 4 flows into the centrifugal impeller 20 through the water outlet channel. Because the ring diameter of the lower wheel of the centrifugal impeller 20 is smaller than that of the upper wheel, a part of the lower wheel protrudes inward compared with the upper wheel. Thus, part of the water flow is blocked by the protruding part of the lower wheel. The depth of the arc-shaped groove is equal to that of the upper wheel. Therefore, the blocked water flows out through the arc-shaped groove 23 of the upper wheel. The centrifugal impeller seat 19 is fixed on the centrifugal impeller 20, and the ring diameter of the centrifugal impeller seat 19 is the same as that of the lower wheel of the centrifugal impeller 20, so as to prevent the water flow from splashing out above the arc-shaped groove 23 and ensure that it completely flows out through the arc-shaped groove 23. When the water flow flows out along the arc-shaped groove 23, it will impact the annular saw teeth of the reaction thrust stator 18, thus generating a certain annular thrust. Since the reaction thrust stator 18 is fixed, under the action of the annular thrust, the centrifugal impeller 20 rotates rapidly on the bearing ring. Because the connecting rod 22 is fixed in the connecting through hole 21 of the centrifugal impeller 20 and the centrifugal impeller seat 19, at this time, the centrifugal impeller 20 and the centrifugal impeller seat 19 drive the connecting rod 22 to rotate rapidly, and the connecting rod 22 drives the flushing brush strip 14 to rotate rapidly to brush the cup body 7 and the filter element 8. The sewage after brushing flows out through the lower sewage outlet 9. The present invention makes full use of the self-water pressure in the tap water pipeline to push the centrifugal impeller 20 and drive the cleaning brush on the flushing brush strip 14 to scrape and wash the scale, rust, red worms, sediment, etc. on the inner wall of the flushing valve body and the filter mesh core at high speed; the operation is simple, one-step in place, the cleaning is thorough, and secondary pollution is eliminated.

[0034] In the present invention, specific examples are used to elaborate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. Multifunctional central pre-filter, characterized in that: It includes a valve body. An inlet is provided on one side of the valve body, and an outlet is provided on the other side. A valve core is arranged inside the valve body, and a check valve core is arranged inside the valve core. Two intersecting circular flanges are installed on the side wall of the valve core close to the outlet. Sealing gaskets are arranged inside both of the two circular flanges, and the sealing gaskets are in sealed contact with the outlet. A water outlet hole penetrating through the upper sealing gasket and the side wall of the valve core is provided on the circular flange above the valve core. An annular flange is installed on the side wall of the valve core close to the inlet. A sealing gasket is arranged inside the annular flange, and the sealing gasket can be in sealed contact with the inlet. A water inlet hole penetrating through the sealing gasket and the side wall of the valve core is provided on the annular flange. The annular flange has the same height as the circular flange below the valve core. A cup body is hermetically connected to the bottom of the valve body. A filter element is arranged inside the cup body, and the top of the filter element is fixedly connected to the valve core. A sewage discharge port is provided at the bottom of the cup body, and a sealing head is arranged on the sewage discharge port. The sealing head is fixedly connected to the bottom of the filter element. A valve cover is installed on the top of the valve body. A lead screw passes through the valve cover. The bottom end of the lead screw is fixedly connected to the top of the valve core, and the top end of the lead screw is connected to a handwheel. A cleaning device is installed on the inner wall at the contact position between the valve body and the cup body. Four water outlet channels are provided on the side wall at the lower end of the valve core. The water outlet channels are located at the position of the cleaning device. A flushing brush strip is arranged on the cleaning device, and the flushing brush strip is arranged parallel to the outside of the filter element. The valve core can switch the water flow path by moving up and down. The cleaning device includes a base sleeved outside the valve core. A counter-thrust stator is fixedly installed below the base. The counter-thrust stator is a ring-shaped structure with annular sawteeth on its inner wall. An annular centrifugal impeller seat is movably arranged inside the counter-thrust stator. A ring-shaped centrifugal impeller is connected below the centrifugal impeller seat. A bearing ring is fixedly installed below the centrifugal impeller. The ring diameter of the bearing ring is larger than that of the centrifugal impeller. Symmetric connecting through holes are provided on the centrifugal impeller seat and the centrifugal impeller. A connecting rod passes through the connecting through holes. After passing through the inner ring of the bearing ring, the connecting rod is connected to the flushing brush strip. The centrifugal impeller includes an integrally formed upper wheel and a lower wheel. The inner diameter of the circular ring of the lower wheel is smaller than that of the upper wheel. Two symmetric arc-shaped grooves are provided on the upper wheel. The arc-shaped grooves are horizontally arranged and the groove direction of the arc-shaped grooves is opposite to the tooth direction of the annular sawteeth of the counter-thrust stator. A filter net is arranged on the outer ring of the filter element. External threads are provided on the outer wall of the counter-thrust stator, and internal threads are provided on the inner wall of the valve body. The counter-thrust stator and the valve body are fixedly connected by threads.

2. The multi-functional central pre-filter according to claim 1, wherein: An adapter is installed below the cup body, and a lower decorative cover is installed outside the adapter.

3. The multifunctional central pre-filter according to claim 1, wherein: Front and rear decorative covers are arranged outside the valve cover and the valve body, and the handwheel is arranged on the front and rear decorative covers.

4. The multifunctional central pre-filter according to claim 1, characterized in that: A pressure gauge is installed on the valve body, and the pressure gauge is connected to the inlet.

5. The multifunctional central pre-filter according to claim 1, characterized in that: The base is of a cylindrical structure, a bearing plate is sleeved outside the base, a plurality of strip-shaped holes are formed in the bearing plate, and the connection end of the filter element and the valve core is located inside the base.

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