A new prefilter

Abstract

The application belongs to the technical field of filters, and particularly relates to a novel front filter which comprises a valve body and a filter cartridge installed on the upper portion of the valve body, the top of the filter cartridge is provided with a filter cover, the filter cover is fixedly connected with the filter cartridge in a screwing mode, a filter body for filtering impurities is installed between the filter cartridge and the filter cover, the filter body is fixed between the filter cartridge and the filter cover in a limiting mode, quartz sand is filled between the filter body and the filter cover, and a space is reserved between the quartz sand and the filter cover; a blowdown valve is used for washing and discharging the filtered impurities, is installed on a connecting pipe and communicates with the inner cavity of the filter bottle, a blowdown valve rod is used for controlling the opening and closing of the blowdown valve, the quartz sand filters the impurities in tap water and has the functions of interception and filtration, when backwashing, the quartz sand rolls up and down under the washing of the reverse water flow, the quartz sand is self-cleaned of the filtered impurities, the impurities are discharged from the filter through the blowdown valve along with the water flow, and the quartz sand is a good filtering material.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of filter, and particularly relates to a novel pre-filter. BACKGROUND

[0002] The pre-filter is the first rough filtering equipment for the water in the whole house, can filter the silt, rust and large particles in the tap water, is usually installed behind the water meter of the water inlet pipeline, so that the large amount of sediment impurities in the pipe network cannot cause harm to the human body, and positively protects the embedded pipeline, faucet, electrical appliance and the like.

[0003] The general pre-filter uses the stainless steel net or the plastic disc to filter, physically intercepts the impurities and particles in the tap water, and the general pre-filter with only one filtering net is easy to be blocked, and the impurities are easy to stick to the filtering net, so that the flushing effect is poor. SUMMARY

[0004] In order to solve the problems in the background art, the present application provides a novel pre-filter to solve the problems in the background art.

[0005] In order to achieve the above object, the present application provides the following technical scheme: a novel pre-filter, comprising a valve body and a filter cartridge installed on the upper part of the valve body, a filter cover is installed on the top of the filter cartridge, the filter cover is screw-connected and fixed with the filter cartridge, a filter body for filtering impurities is installed between the filter cartridge and the filter cover, the filter body is limited and fixed between the filter cartridge and the filter cover, quartz sand is filled between the filter body and the filter cover, a space is reserved between the quartz sand and the filter cover, a filter bottle is arranged outside the filter cover, the filter bottle is screw-connected and installed on the top of the valve body, and is in sealing connection with the valve body, a three-way water inlet valve ball is installed in the valve body, a blowdown valve is installed on the bottom of the valve body, the blowdown valve is fixedly connected with the valve body, and a water inlet pipe is fixedly installed on one side of the valve body.

[0006] Preferably, the valve body comprises a connecting seat and a connecting pipe, the connecting seat is fixed on the top of the connecting pipe, a water outlet hole is arranged between the connecting seat and the connecting pipe, the water outlet hole penetrates the connecting seat and the connecting pipe, a blowdown valve mounting hole is arranged on the connecting seat, a water inlet hole is arranged on the connecting pipe and the connecting seat, the water inlet hole penetrates the side wall of the water outlet hole, a threaded hole is arranged on one end of the connecting seat, the threaded hole and the water inlet hole penetrate each other, and a valve rod mounting hole is arranged on the outer wall of the threaded hole.

[0007] Preferably, the blowdown valve is connected with the blowdown valve mounting hole, the blowdown valve is in sealing connection with the blowdown valve mounting hole, a blowdown valve rod for controlling opening and closing is arranged on the blowdown valve, and the blowdown valve rod is in rotary connection with the blowdown valve.

[0008] Preferably, the three-way water inlet valve ball is installed inside the threaded hole of the connecting pipe, a water inlet valve rod is installed through the valve rod mounting hole on the three-way water inlet valve ball, the water inlet valve rod is rotationally connected with the connecting pipe, and a sealing ring is arranged.

[0009] Preferably, the two ends of the connecting pipe are communicated with each other, the threaded hole is provided with a threaded portion, is connected with the outer thread of the water inlet pipe, and is provided with a sealing ring.

[0010] Preferably, the filter body comprises a filter screen framework, a filter hopper and a filter screen, the filter screen framework is fixedly installed inside the filter cylinder, the filter screen is attached and fixed to the inner side wall of the filter screen framework, the filter hopper is located inside the filter screen framework, the filter hopper is clamped and fixed with the filter screen framework, and the filter screen is located between the filter screen framework and the filter hopper.

[0011] Preferably, one end of the filter cylinder is provided with an annular rib, the other end of the filter cylinder is provided with an internal thread, the annular rib is installed in the water outlet hole, and a sealing ring is arranged for sealing.

[0012] Preferably, the bottom of the filter cover is provided with an external thread matched with the internal thread, and the external thread is screw-connected and sealed with the internal thread.

[0013] Preferably, the top of the filter cover is provided with a grid, and the bottom outer side wall of the filter cover is provided with a plurality of water distribution ribs.

[0014] Preferably, the bottom end of the filter bottle is provided with a screw connection portion matched with the valve body, the filter bottle is screw-connected and fixed with the valve body, and a sealing ring is arranged at the connection position of the filter bottle and the valve body.

[0015] Compared with the prior art, the beneficial effects of the present application are:

[0016] In the present application, the blowdown valve is used for flushing and discharging the filtered impurities, is installed on the connecting pipe and communicates with the inner cavity of the filter bottle, the blowdown valve rod is used for controlling the opening and closing of the blowdown valve, the quartz sand has the effects of interception and filtration when filtering the impurities in tap water, when backwashing, the quartz sand will roll up and down under the washing of the reverse water flow, the filtered impurities are cleaned, and the impurities are discharged from the filter through the blowdown valve along with the water flow, and the quartz sand is a good filtering material.

[0017] In the present application, the filter cartridge is used to isolate unfiltered tap water and purified water, the filter screen is used for the second filtration, intercepting small particles, the filter bottle is used to isolate tap water and the outside world, the filter cover is loaded with quartz sand, and the unfiltered tap water enters the filter cover from the grid, and the grid is designed with a spacing smaller than the diameter of the quartz sand particles, so that the grid can intercept the quartz sand during backwashing to prevent the quartz sand from being washed out of the filter cover by the backwashing water flow, causing the loss of filter material. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the principles of the present application, and do not limit the present application. In the drawings:

[0019] Figure 1 is a structural schematic diagram of the present application;

[0020] Figure 2 is a structural schematic diagram of the present application in a split state;

[0021] Figure 3 is a structural schematic diagram of the present application in a split state;

[0022] Figure 4 is a structural schematic diagram of the present application in a split state;

[0023] Figure 5 is a structural schematic diagram of the present application in a split state;

[0024] Figure 6 is a structural schematic diagram of the valve body in the present application;

[0025] Figure 7 is a structural schematic diagram of the valve body in the present application from another perspective;

[0026] Figure 8 is a structural schematic diagram of the filter cartridge in the present application;

[0027] Figure 9 is a structural schematic diagram of the filter cover in the present application.

[0028] In the figure: 1, valve body; 11, connecting seat; 12, connecting pipe; 101, water outlet hole; 102, sewage valve mounting hole; 103, water inlet hole; 104, threaded hole; 105, valve rod mounting hole; 2, filter cartridge; 201, internal thread; 202, annular rib; 3, filter body; 31, filter screen framework; 32, filter hopper; 33, filter screen; 4, filter cover; 401, grid; 402, water distribution rib; 403, external thread; 5, filter bottle; 6, quartz sand; 7, sewage valve; 71, sewage valve rod; 8, water inlet pipe; 9, three-way water inlet valve ball; 91, water inlet valve rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] Please refer to Figures 1-9 The present application provides the following technical solutions: a novel pre-filter, comprising a valve body 1 and a filter cartridge 2 installed on the upper part of the valve body 1, a filter cover 4 is installed on the top of the filter cartridge 2, the filter cover 4 is fixedly connected with the filter cartridge 2 by screwing, a filter body 3 for filtering impurities is installed between the filter cartridge 2 and the filter cover 4, the filter body 3 is fixed between the filter cartridge 2 and the filter cover 4 by limiting, quartz sand 6 is arranged between the filter body 3 and the filter cover 4, a space is reserved between the quartz sand 6 and the filter cover 4, a filter bottle 5 is arranged outside the filter cover 4, the filter bottle 5 is screw-connected and installed on the top of the valve body 1 and is sealingly connected with the valve body 1, a three-way water inlet valve ball 9 is installed in the valve body 1, a sewage valve 7 is installed at the bottom of the valve body 1, the sewage valve 7 is fixedly connected with the valve body 1, and a water inlet pipe 8 is fixedly installed on one side of the valve body 1.

[0031] In the embodiment, the valve body 1 comprises a connecting seat 11 and a connecting pipe 12, two ends of the connecting pipe 12 are respectively provided with a water inlet and a water outlet, the upper end of the connecting seat 11 is threaded, a filter bottle 5 is connected through the threaded connection, one end of the water inlet pipe 8 is provided with a short threaded end which is screwed with the thread of the connecting pipe 12 to play the role of the water inlet, at the same time, the three-way water inlet valve ball 9 and the matched ball valve O-ring are fixed, the installation is convenient and fixed, the connecting pipe 12 is provided with a hole connected with the water inlet pipe 8, the hole is provided with an internal thread 201, and the three-way water inlet valve ball 9, the ball valve sealing gasket and the matched O-ring are installed in the hole; the connecting pipe 12 is provided with a water inlet hole 103 matched with the water inlet valve rod 91, the water inlet valve rod 91 is exposed outside the water inlet hole 103 after assembly, the water inlet valve rod 91 can be operated outside the connecting pipe 12, and then the three-way water inlet valve ball 9 matched with the water inlet valve rod 91 is controlled, the connecting pipe 12 is provided with a blow-off valve mounting hole 102 matched with the blow-off valve 7, the blow-off valve 7 is mounted in the blow-off valve mounting hole 102, the valve body 1 is provided with the water inlet hole 103, and the water inlet is communicated with the water inlet pipe 8.The valve body 1 is provided with a water outlet hole 101, which is communicated with the water outlet. The three-way water inlet valve ball 9 is used for switching water path during filtration and backwashing. The water inlet hole 103 is used for cooperating with the water inlet valve rod 91. The water inlet valve rod 91 can switch the water path when rotating. The water passing hole is used for passing tap water. The blowdown valve 7 is used for washing and discharging the filtered impurities, which is installed on the connecting pipe 12 and communicated with the inner cavity of the filter bottle 5. The blowdown valve rod 71 is used for controlling the opening and closing of the blowdown valve 7. The quartz sand 6 filters the impurities in the tap water and has the functions of interception and filtration. During backwashing, the quartz sand 6 will roll up and down to clean the filtered impurities. The impurities are discharged from the filter through the blowdown valve 7 along with the water flow. The quartz sand 6 is a good filtering material. The filter cartridge 2 is used for isolating the unfiltered tap water and purified water. The filter cartridge 2 is internally provided with a filter screen framework 31 and a filter screen 33. The filter screen 33 is embedded in the filter screen framework 31. The surface of the filter screen framework 31 is grid-shaped and can pass water. The filter screen framework 31 mainly supports the filter screen 33. The filter screen 33 is used for the second filtration and intercepts small particle impurities (the first filtration is the quartz sand 6). The filter bottle 5 is used for isolating the tap water and the outside. The filter cover 4 is internally loaded with the quartz sand 6 and simultaneously isolates the tap water from contacting the filter screen 33. The unfiltered tap water enters the inside of the filter cover 4 through the grid 401. Too large particles will be intercepted by the grid 401. During backwashing, the large particles are directly discharged from the inner cavity of the filter bottle 5 to the filter through the blowdown valve 7. Meanwhile, the design distance of the grid 401 is smaller than the diameter of the quartz sand 6 particles. In this way, the grid 401 can intercept the quartz sand 6 during backwashing to prevent the quartz sand 6 from being washed out of the filter cover 4 by the backwashing water flow and causing the loss of filter material. The water distribution ribs 402 can disperse the water flow and make the water flow more uniform during normal filtration of the filter. Meanwhile, the water distribution ribs 402 are in contact with the inner wall of the filter bottle 5 to play a positioning role and prevent the filter cover 4 from shaking in the filter bottle 5. The external thread 403 cooperates with the internal thread 201 of the filter cartridge 2. After combination, the filter core part becomes an integral filter module. The filter material and the filter screen 33 are inside and can be conveniently replaced and maintained. The filter hopper 32 is funnel-shaped and is designed as a grid on the surface to intercept the quartz sand 6 and prevent the quartz sand 6 from directly contacting the filter screen 33 and hindering the filtration of the filter screen 33. The water inlet valve rod 91 cooperates with the three-way water inlet valve ball 9 and can control the rotation of the three-way water inlet valve ball 9 to switch the water path when rotating.

[0032] Specifically, the valve body 1 includes a connecting seat 11 and a connecting pipe 12, the connecting seat 11 is fixed to the top of the connecting pipe 12, a water outlet hole 101 is arranged between the connecting seat 11 and the connecting pipe 12, the water outlet hole 101 penetrates the connecting seat 11 and the connecting pipe 12, a sewage valve mounting hole 102 is arranged on the connecting seat 11, the connecting pipe 12 and the connecting seat 11 are provided with a water inlet hole 103, the water inlet hole 103 penetrates to the side wall of the water outlet hole 101, one end of the connecting seat 11 is provided with a threaded hole 104, the threaded hole 104 and the water inlet hole 103 are mutually penetrated, the outer wall of the threaded hole 104 is provided with a valve rod mounting hole 105, the sewage valve mounting hole 102 is connected with a sewage valve 7, the sewage valve 7 is sealingly connected with the sewage valve mounting hole 102, the sewage valve 7 is provided with a sewage valve rod 71 for controlling opening and closing, the sewage valve rod 71 is rotatably connected with the sewage valve 7, a three-way water inlet valve ball 9 is installed in the threaded hole 104 of the connecting pipe 12, a water inlet valve rod 91 is installed in the valve rod mounting hole 105 on the three-way water inlet valve ball 9, the water inlet valve rod 91 is rotatably connected with the connecting pipe 12 and is provided with a sealing ring, the two ends of the connecting pipe 12 are mutually penetrated, the threaded hole 104 is provided with a threaded part, is connected with the outer thread of the water inlet pipe 8 and is provided with a sealing ring; the connecting pipe 12 is provided with a water inlet hole 103 matched with the water inlet valve rod 91, the water inlet valve rod 91 is exposed outside the water inlet hole 103 after assembly, the water inlet valve rod 91 can be operated outside the connecting pipe 12, thereby controlling the three-way water inlet valve ball 9 matched with the water inlet valve rod 91, the connecting pipe 12 is provided with a sewage valve mounting hole 102 matched with the sewage valve 7, for installing the sewage valve 7, the valve body 1 is provided with a water inlet hole 103, the water inlet hole is communicated with the connecting hole of the water inlet pipe 8; the valve body 1 is provided with a water outlet hole 101, the water outlet hole 101 is communicated with the water outlet, the three-way water inlet valve ball 9 is used for water path switching during filtering and backwashing, the water inlet hole 103 is used for mutual cooperation with the water inlet valve rod 91, the water inlet valve rod 91 can switch the water path when rotating.

[0033] Specifically, the filter body 3 includes a filter screen framework 31, a filter hopper 32 and a filter screen 33, the filter screen framework 31 is fixedly installed in the inside of the filter cylinder 2, the filter screen 33 is fixedly attached to the inner side wall of the filter screen framework 31, the filter hopper 32 is located in the inside of the filter screen framework 31, the filter hopper 32 is clamped and fixed with the filter screen framework 31, the filter screen 33 is located between the filter screen framework 31 and the filter hopper 32, the filter cylinder 2 is used for isolating unfiltered tap water and purified water, and is internally provided with the filter screen framework 31 and the filter screen 33, the filter screen framework 31 is embedded with the filter screen 33, the surface of the filter screen framework 31 is grid-shaped and can pass water, the filter screen framework 31 mainly plays a role in supporting the filter screen 33, the filter screen 33 is used for a second filtering effect and intercepts small-particle impurities, and the first filtering effect is quartz sand 6, the filter bottle 5 is used for isolating tap water and the outside world, the filter cover 4 is internally loaded with the quartz sand 6 and simultaneously isolates tap water from directly contacting the filter screen 33.

[0034] Specific, one end of filter cartridge 2 is provided with annular rib 202, the other end of filter cartridge 2 is provided with internal thread 201, annular rib 202 is installed in water outlet hole 101, and is sealed by sealing ring, bottom of filter cover 4 is provided with external thread 403 matched with internal thread 201, external thread 403 is screwed and sealed with internal thread 201, top of filter cover 4 is provided with grid 401, and a plurality of water distribution ribs 402 are arranged on the outer side wall of the bottom of filter cover 4, unfiltered tap water enters the inside of filter cover 4 from grid 401, and too large particles are intercepted by grid 401, large particles are directly discharged from the inner cavity of filter bottle 5 through blowdown valve 7 during backwashing, and the design interval of grid 401 is less than the diameter of quartz sand 6 particles, so that grid 401 can intercept quartz sand 6 during backwashing, prevent quartz sand 6 from being washed out of filter cover 4 by backwashing water flow, and cause filter material loss, water distribution rib 402, during normal filtration of the filter, tap water passes through a plurality of water distribution ribs 402, which can play a role in dispersing water flow, and the water flow is more uniform, and water distribution rib 402 is in contact with the inner wall of filter bottle 5, plays a positioning role, and prevents filter cover 4 from shaking in filter bottle 5.

[0035] Specific, the bottom end of filter bottle 5 is provided with a screwing part matched with valve body 1, filter bottle 5 is screwed and fixed with valve body 1, and sealing ring is arranged at the connection between filter bottle 5 and valve body 1, so as to guarantee the stability and sealing performance of installation.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A novel pre-filter, characterized in that: The system includes a valve body (1) and a filter cartridge (2) mounted on the upper part of the valve body (1). A filter cover (4) is mounted on the top of the filter cartridge (2), and the filter cover (4) is screwed to the filter cartridge (2). A filter body (3) for filtering impurities is installed between the filter cartridge (2) and the filter cover (4). The filter body (3) is limited and fixed between the filter cartridge (2) and the filter cover (4). Quartz sand (6) is filled between the filter body (3) and the filter cover (4). A space is reserved between the sand (6) and the filter cover (4). A filter bottle (5) is provided on the outside of the filter cover (4). The filter bottle (5) is screwed onto the top of the valve body (1) and is sealed to the valve body (1). A three-way inlet valve ball (9) is installed inside the valve body (1). A drain valve (7) is installed at the bottom of the valve body (1). The drain valve (7) is fixedly connected to the valve body (1). An inlet pipe (8) is fixedly installed on one side of the valve body (1). The valve body (1) includes a connecting seat (11) and a connecting pipe (12). The connecting seat (11) is fixed to the top of the connecting pipe (12). A water outlet (101) is provided between the connecting seat (11) and the connecting pipe (12). The water outlet (101) passes through the connecting seat (11) and the connecting pipe (12). A through drain valve mounting hole (102) is provided on the connecting seat (11). A water inlet (103) is provided on the connecting pipe (12) and the connecting seat (11). The water inlet (103) passes through to the side wall of the water outlet (101). A threaded hole (104) is provided at one end of the connecting seat (11). The threaded hole (104) and the water inlet (103) are interconnected. A valve stem mounting hole (105) is provided on the outer wall of the threaded hole (104). The filter body (3) includes a filter frame (31), a filter bucket (32), and a filter screen (33). The filter frame (31) is fixedly installed inside the filter cylinder (2). The filter screen (33) is attached to and fixed on the inner side wall of the filter frame (31). The filter bucket (32) is located inside the filter frame (31). The filter bucket (32) is engaged and fixed with the filter frame (31). The filter screen (33) is located between the filter frame (31) and the filter bucket (32). The filter cover (4) is provided with a mesh (401) at the top, and the mesh (401) spacing is smaller than the diameter of the quartz sand (6); during backwashing, the reverse water flow drives the quartz sand (6) to roll up and down to clean impurities, and the impurities are discharged with the water flow through the drain valve (7). The filter hopper (32) is funnel-shaped and has a mesh-like surface designed to intercept the quartz sand (6) and prevent the quartz sand (6) from directly contacting the filter screen (33); The three-way inlet valve ball (9) is installed inside the threaded hole (104) of the connecting pipe (12). The inlet valve rod (91) is installed on the three-way inlet valve ball (9) through the valve rod mounting hole (105). The inlet valve rod (91) is rotatably connected to the connecting pipe (12) and is provided with a sealing ring. The two ends of the connecting pipe (12) are interconnected, and the threaded hole (104) is provided with a threaded part, which is connected to the external helix of the water inlet pipe (8), and is provided with a sealing ring; One end of the filter cylinder (2) is provided with an annular rib (202), and the other end of the filter cylinder (2) is provided with an internal thread (201). The annular rib (202) is installed in the water outlet (101) and is sealed with a sealing ring. The filter cartridge (2) is used to isolate unfiltered tap water and purified water; the filter cover (4) is filled with the quartz sand (6) and prevents tap water from directly contacting the filter screen (33). Unfiltered tap water enters the filter cover (4) from the mesh (401). The bottom of the filter cover (4) is provided with an external thread (403) that mates with the internal thread (201), and the external thread (403) is screwed and sealed with the internal thread (201); The bottom outer wall of the filter cover (4) is provided with several water-dividing ribs (402). During normal filtration, tap water passes through multiple water-dividing ribs (402) to disperse the water flow. The water-dividing ribs (402) are also used to contact the inner wall of the filter bottle (5) to prevent the filter cover (4) from shaking inside the filter bottle (5). The bottom end of the filter bottle (5) is provided with a screw connection that cooperates with the valve body (1). The filter bottle (5) is screwed and fixed to the valve body (1), and a sealing ring is installed at the connection between the filter bottle (5) and the valve body (1).

Images