CN115671856A - Backwashing filter and filter element device - Google Patents

Abstract

The invention discloses a backwash filter and a filter element device, which relate to the technical field of filter equipment. It includes a first-level filter module, and a detachable second-level filter module is installed on the top of the first-level filter module. The first-level filter module includes a first-level outer frame. The bottom of the filter module and the top outer wall of the first-level exoskeleton are equidistantly provided with a plurality of first-level side holes, and a funnel-shaped filter screen is fixedly connected between the inner wall of the first-level exoskeleton and the bottom of the outer wall of the draft tube. The present invention can realize straight-through mode, filter mode and blocking mode by setting the valve head assembly with three-way ball valve, and in the straight-through mode, block the water outlet and open the bottom of the filter bottle assembly to realize the backwash of the filter, so as to reach the The internal filter device has the effect of flushing and blowing down, so that it can be effective.

Description

A backwash filter and filter element device

technical field

The invention relates to the technical field of filtering equipment, in particular to a backwashing filter and a filter element device.

Background technique

The central pre-filter belongs to the general pipeline water quality purification product. The key function of the central pre-filter is to remove visible solid impurities and some harmful chemical substances in the pipeline, mainly including rust, sediment, algae, colloid, etc., which are harmful to pipelines, faucets, Electrical appliances, etc. play an active role in protection.

The existing central pre-filter only filters coarse particles such as sediment, rust, etc., without changing the water quality; the existing terminal water purification equipment has a small flow rate and cannot meet the flow requirements of the whole house water purification filter; one cannot perform backwashing during use, and the entire The clogging probability of the filter will increase and the service life will decrease. Usually, a single filter material can only be used for one form of filtration, and the water flow state of the whole filter is relatively monotonous, and it is usually impossible to pass through when the filter equipment is blocked. water.

Contents of the invention

The object of the present invention is to provide a backwash filter and a filter element device to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a backwash filter and filter element device, including a primary filter module, a detachable secondary filter module is installed on the top of the primary filter module, the primary filter The module includes a first-level exoskeleton, and the inside of the first-level exoskeleton is fixedly connected with a diversion tube. The diversion tube is connected to the bottom of the second-level filtration module. A plurality of first-level side holes are equidistantly opened around the outer wall of the top of the first-level exoskeleton. A funnel-shaped filter screen is fixedly connected between the inner wall of the primary exoskeleton and the bottom of the outer wall of the draft tube, and a primary filter material is filled between the funnel-shaped filter screen, the outer wall of the draft tube, and the inner wall of the primary exoskeleton.

Furthermore, the secondary filter module includes a secondary exoskeleton, the inner center of the bottom of the secondary exoskeleton is fixedly connected with an inner skeleton, the outer wall of the inner skeleton is equidistantly provided with inner skeleton holes, and the bottom of the secondary inner skeleton is opened There are bottom holes, and secondary filter materials are filled between the outer wall of the inner skeleton and the inner wall of the outer skeleton.

Furthermore, the secondary filter material is one of PP cotton filter element, PP cotton pleated membrane, activated carbon filter element, carbon fiber filter element or composite filter element, and the primary filter material is quartz sand or granular activated carbon.

A backwash filter, a filter element device, also includes a filter bottle assembly, the filter element device is installed inside the filter bottle assembly, a valve head assembly is fixedly connected to the top of the filter bottle assembly, and a control valve is installed on the top of the valve head assembly The water inlet ball valve motor for the action of the head assembly, the filter bottle assembly is equipped with a water outlet ball valve motor that controls the opening and closing of the filter bottle assembly, and an electric control board that is electrically connected to and controlled by the water inlet ball valve motor and the water outlet ball valve motor. The component is provided with a water inlet and a water outlet.

Further, the filter bottle assembly includes a filter bottle, the top of the filter bottle is provided with a fastening nut, the filter bottle is threadedly connected to the valve head assembly through the fastening nut, the bottom of the filter bottle is installed with a water outlet ball valve, and the output end of the water outlet ball valve motor It is connected with the water outlet ball valve to control the opening and closing of the water outlet ball valve.

Furthermore, a three-way ball valve is installed inside the valve head assembly, and the three-way ball valve can perform three water transmission modes under the control of the water inlet ball valve motor, which are straight-through mode, filter mode and blocking mode, and the water flow in the filter mode It will be introduced into the gap between the filter bottle assembly and the filter element unit.

Furthermore, when the valve head assembly blocks the water outlet end and opens the bottom of the filter bottle assembly in the straight-through mode, backwashing of the filter can be realized.

Furthermore, the valve head assembly includes a valve body, connecting pipes arranged symmetrically inside both sides of the valve body, and a main chamber arranged between the connecting pipes on both sides, and the three-way ball valve is arranged in the main chamber The left side is on the same axis as the connecting pipe.

Further, the left side of the three-way ball valve is provided with a fastener, and the fastener is fixedly connected to the inside of the main cavity by threads, and the top of the three-way ball valve is provided with a hole that passes through the main cavity and the valve body. A valve stem, the two ends of the valve stem are respectively connected to the three-way ball valve and the water inlet ball valve motor.

Furthermore, the main cavity, fasteners and connecting pipes are all environmentally friendly non-metallic materials, the valve body is made of metal, and the two sides of the main cavity are connected to the connecting pipes by welding.

Compared with prior art, the beneficial effect of the present invention is:

The backwash filter and filter element device can realize straight-through mode, filter mode and blocking mode through the set valve head assembly with three-way ball valve, and in the straight-through mode, block the water outlet end and open the bottom of the filter bottle assembly to realize the filter Backwashing, so as to achieve the effect of flushing and discharging the internal filter device, so that it can be effective;

At the same time, the filter module adopts a dual modular design, which can be matched with a variety of filter formulas to meet the requirements of various usage scenarios;

Not only that, the use of the valve head assembly can open the straight-through mode when the filter equipment is blocked, and still be able to drain water, thereby avoiding the phenomenon of excessive pipe pressure caused by the entire valve when the filter is blocked.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a schematic diagram of the explosion structure of the present invention;

Fig. 3 is the flow direction diagram of the water flow of the filter valve head assembly of the present invention in the filtering state;

Fig. 4 is the schematic view of the water flow of the filter valve head assembly of the present invention in a straight-through state;

Fig. 5 is the schematic view of the water flow of the filter valve head assembly of the present invention in a closed state;

Fig. 6 is a schematic structural diagram of a secondary filter module of the present invention;

Fig. 7-a is a schematic diagram of the water flow of the secondary filtration module of the present invention flowing from the outside to the inside;

Fig. 7-b is a schematic diagram of water flowing through the secondary filtration module of the present invention from inside to outside;

Fig. 8 is a structural schematic diagram of a primary filter module of the present invention;

Fig. 9-a is a schematic diagram of water flowing through the primary filtration module of the present invention from outside to inside;

Fig. 9-b is a schematic diagram of water flowing from the inside to the outside of the primary filtration module of the present invention;

Fig. 10 is the structural representation of filter bottle assembly of the present invention;

Figure 11-a is a schematic diagram of water flow in the filtration state of the present invention;

Figure 11-b is a schematic diagram of the water flow in the backwash state of the present invention;

Figure 11-c is a schematic diagram of water flow in the closed state of the present invention;

Fig. 12 is a schematic structural view of the valve head assembly of the present invention.

In the figure: 1, the water inlet ball valve motor; 2, the valve head assembly; 201, the valve body; 202, the main cavity; 203, the fastener; 204, the connecting pipe; 3, the secondary filter module; 301, the bottom hole; 302, secondary filter material; 303, inner skeleton hole; 4, primary filter module; 401, primary side hole; 402, primary filter material; 403, funnel-shaped filter screen; 404, diversion tube; 5, filter bottle assembly; 501, water outlet ball valve; 502, fastening nut; 6, water outlet ball valve motor.

Detailed ways

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 some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, not to indicate or imply the referred device Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, it should be understood that, for the convenience of description, the dimensions of the various components shown in the drawings are not drawn according to the actual scale relationship, for example, the thickness or width of some layers may be exaggerated relative to other layers.

It should be noted that similar reference numerals and letters denote similar items in the following drawings, therefore, once an item is defined or described in one drawing, it will not need to be redefined in the description of subsequent drawings. It is further discussed and described in detail.

As shown in Figures 1-12, the present invention provides a technical solution: a backwash filter and filter element device, including a primary filter module 4, and a detachable secondary filter module 3 is installed on the top of the primary filter module 4 The first-level filter module 4 includes a first-level exoskeleton, the inside of the first-level exoskeleton is fixedly connected with a guide tube 404, and the guide tube 404 is connected to the bottom of the second-level filter module 3. A plurality of first-level side holes 401, a funnel-shaped filter screen 403 is fixedly connected between the inner wall of the first-level exoskeleton and the bottom of the outer wall of the draft tube 404. Filled with a primary filter material 402, the secondary filter module 3 includes a secondary outer frame, the inner center of the bottom of the secondary outer frame is fixedly connected with an inner frame, and the outer wall of the inner frame is equidistantly provided with inner frame holes 303, and the bottom of the secondary inner frame There is a bottom hole 301, and the secondary filter material 302 is filled between the outer wall of the inner frame and the inner wall of the outer frame. The secondary filter material 302 is one of PP cotton filter element, PP cotton folded membrane, activated carbon filter element, carbon fiber filter element or composite filter element. , the primary filter material 402 is quartz sand or granular activated carbon.

As shown in Figure 2, the above-mentioned filter element device is used, and also includes a filter bottle assembly 5, the filter element device is installed inside the filter bottle assembly 5, the top of the filter bottle assembly 5 is fixedly connected with the valve head assembly 2, and the top of the valve head assembly 2 is installed with The water inlet ball valve motor 1 that controls the action of the valve head assembly 2, the filter bottle assembly 5 is equipped with a water outlet ball valve motor 6 that controls the opening and closing of the filter bottle assembly 5, and is electrically connected and controlled with the water inlet ball valve motor 1 and the water outlet ball valve motor 6 The electric control board, the valve head assembly 2 is provided with a water inlet end and a water outlet end, and also includes an electric control board electrically connected with the water inlet ball valve motor 1 and the water outlet ball valve motor 6 .

As shown in Figure 10, the filter bottle assembly 5 includes a filter bottle, the top of the filter bottle is provided with a fastening nut 502, the filter bottle is threaded with the valve head assembly 2 through the fastening nut 502, the bottom of the filter bottle is equipped with a water outlet ball valve 501, and the water outlet ball valve The output end of the motor 6 is connected with the water outlet ball valve 501 to control the opening and closing of the water outlet ball valve 501 .

As shown in Figure 3-Figure 5, a three-way ball valve is installed inside the valve head assembly 2, and the three-way ball valve can perform three water transmission modes under the control of the water inlet ball valve motor 1, which are straight-through mode, filter mode and blocking mode. In the filtration mode, the water flow will be introduced into the gap between the filter bottle assembly 5 and the filter element device, and the valve head assembly 2 blocks the water outlet in the straight-through mode and opens the bottom of the filter bottle assembly 5 to realize backwashing of the filter.

As shown in the figure, a fastener 203 is provided on the left side of the three-way ball valve, and the fastener 203 is fixedly connected to the inside of the main chamber 202 through threads. The valve stem, the two ends of the valve stem are respectively connected to the three-way ball valve and the water inlet ball valve motor 1, the main cavity 202, the fastener 203 and the connecting pipe 204 are all environmentally friendly non-metallic materials, the valve body 201 is made of metal, and the main cavity 202 Both sides of the connection pipe 204 are connected by a welding process

The main components of the whole equipment are introduced as follows:

1. Water inlet ball valve motor 1: The water inlet ball valve motor is connected to the valve stem, and the other end of the valve stem is connected to the three-way ball valve. After the water inlet ball valve motor 1 is powered on, the torque is output, and through the valve stem, the three-way ball valve in the valve head assembly 2 is controlled. Change the direction of water flow.

2. Valve head assembly 2: both ends of the valve head assembly 2, one end is the water inlet (near the water inlet ball valve), and the other end is the water outlet. Different water flow states, and the water inlet can be turned off:

State 1: Filtration state, as shown in Figure 3, the waterway is connected to the gap between the water inlet end, the filter bottle (filter bottle assembly 5) and the filter element (filter element device);

State 2: Straight-through state, as shown in Figure 5, the water does not pass through the filter element, and the water inlet is connected to the water outlet;

State three: Closed state, water flow is blocked.

3. Secondary filtering module: the working principle of the secondary filtering module 3 is shown in FIG. 7 . The water flow enters from the bottom hole 301 around the bottom, and then passes through the secondary filter material 302. The water flow passes from the outside to the inside, and then passes through the inner skeleton hole 303, and then the water flow is discharged upward. The direction of the water flow can also be reversed in the same way. Material 302 can choose PP cotton filter element, PP cotton pleated membrane, activated carbon filter element, carbon fiber filter element or composite filter element, etc.

4. Primary filter module: The working principle of the primary filter module 4 is shown in Figure 9. The water flows in from the primary side hole 401 of the outer frame, and after passing through the primary filter material 402 inside the filter element, the water flows through the funnel-shaped filter at the bottom 403, and then flow upward from the middle guide pipe 404, and the water flow direction can also be reversed in the same way. The primary filter material 402 can choose quartz sand, granular activated carbon, etc.

5. Filter bottle assembly 5: The filter bottle assembly 5 wraps the internal filter element device, and there is a gap between it and the filter element (to ensure that water flow can pass through). There is no thread on the filter bottle, and the fastening nut 502 is used to cooperate with the valve head assembly 2. Its bottom is the drainage assembly and the drainage assembly relies on the water outlet ball valve 501 to realize the drainage function.

6. Water outlet ball valve motor 6: After the water outlet ball valve motor 6 is energized, it outputs torque to control the opening and closing of the drainage ball valve to realize sewage discharge.

Filtration and backwashing functions and optimizations:

Filtration state: As shown in Figure 11-a, the raw water enters from the water inlet of the valve head assembly 2, and the water inlet ball valve motor 1 controls the water inlet three-way ball valve to reach state 1, and guide the water flow into the first-stage filter module 4 to pass through the first-stage After the filter material 402, the water flow passes through the funnel-shaped filter screen 403 at the bottom, and the water flow is diverted to the secondary filter module 3, enters through the bottom holes 301 on both sides, and then passes through the secondary filter material 302. The water flow passes from the outside to the inside, and then passes through the inside The skeleton hole 303 flows out from the water outlet.

Backwash state: As shown in Figure 11-b, the raw water enters from the water inlet of the valve head assembly 2, and the water inlet ball valve motor 1 controls the water inlet three-way ball valve to achieve a straight-through state, and the water flows to the inside of the filter element, and the water passes through the secondary filter before and after the flow Module 3, the primary filter module 4, realizes backwashing and finally flows to the sewage outlet.

Water off state: As shown in Figure 11-c, the water inlet ball valve motor 1 controls the water inlet three-way ball valve to close the waterway.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the present invention is defined by the appended embodiments and their equivalents.

Claims (10)

1. Filter element device, including a primary filter module (4), characterized in that: a detachable secondary filter module (3) is installed on the top of the primary filter module (4), and the primary filter module (4) Including the first-level exoskeleton, the inside of the first-level exoskeleton is fixedly connected with a diversion tube (404), and the diversion tube (404) is connected to the bottom of the second-level filter module (3), and the top outer wall of the first-level exoskeleton is equidistant around A plurality of first-level side holes (401) are opened, and a funnel-shaped filter screen (403) is fixedly connected between the inner wall of the first-level exoskeleton and the bottom of the outer wall of the draft tube (404), and the funnel-shaped filter screen (403) 1. A primary filter material (402) is filled between the outer wall of the draft pipe (404) and the inner wall of the primary exoskeleton. 2. The filter element device according to claim 1, characterized in that: the secondary filter module (3) includes a secondary exoskeleton, the inner center of the bottom of the secondary exoskeleton is fixedly connected with an inner skeleton, and the outer wall of the inner skeleton is surrounded by An inner skeleton hole (303) is opened at the distance, a bottom hole (301) is opened at the bottom of the secondary inner skeleton, and a secondary filter material (302) is filled between the outer wall of the inner skeleton and the inner wall of the outer skeleton. 3. The filter element device according to claim 2, characterized in that: the secondary filter material (302) is one of PP cotton filter elements, PP cotton folded membranes, activated carbon filter elements, carbon fiber filter elements or composite filter elements, the The primary filter material (402) is quartz sand or granular activated carbon. 4. A backwash filter, which uses the filter element device described in any one of claims 1-3, and also includes a filter bottle assembly (5), and the filter element device is installed inside the filter bottle assembly (5), characterized in that : The top of the filter bottle assembly (5) is fixedly connected to the valve head assembly (2), and the top of the valve head assembly (2) is installed with a water inlet ball valve motor (1) to control the movement of the valve head assembly (2). The assembly (5) is equipped with an outlet ball valve motor (6) that controls the opening and closing of the filter bottle assembly (5), and an electric control board that is electrically connected to and controlled by the inlet ball valve motor (1) and the outlet ball valve motor (6). The valve head assembly (2) described above is provided with a water inlet end and a water outlet end. 5. A backwash filter according to claim 4, characterized in that: the filter bottle assembly (5) includes a filter bottle, a fastening nut (502) is arranged on the top of the filter bottle, and the filter bottle passes through the fastening nut (502) is threadedly connected with the valve head assembly (2), and the outlet ball valve (501) is installed at the bottom of the filter bottle, and the output end of the outlet ball valve motor (6) is connected with the outlet ball valve (501) to control the opening of the outlet ball valve (501) close. 6. A backwash filter according to claim 4, characterized in that: the valve head assembly (2) is equipped with a three-way ball valve inside, and the three-way ball valve can be operated under the control of the water inlet ball valve motor (1). Three water transfer modes are straight-through mode, filtering mode and blocking mode. In the filtering mode, the water flow will be introduced into the gap between the filter bottle assembly (5) and the filter element device. 7. A backwash filter according to claim 4, characterized in that: the valve head assembly (2) blocks the water outlet end and opens the bottom of the filter bottle assembly (5) in the straight-through mode to realize the reverse flow of the filter. rinse. 8. A backwash filter according to claim 4, characterized in that: the valve head assembly (2) includes a valve body (201), and connecting pipes arranged symmetrically inside both sides of the valve body (201) (204), the main chamber (202) is arranged between the connecting pipes (204) on both sides, and the three-way ball valve is arranged on the left side of the main chamber (202) on the same axis as the connecting pipe (204) . 9. A backwash filter according to claim 8, characterized in that: the left side of the three-way ball valve is provided with a fastener (203), and the fastener (203) is fixedly connected to the main Inside the cavity (202), the top of the three-way ball valve is provided with a valve stem that passes through the main cavity (202) and the valve body (201), and the two ends of the valve stem are respectively connected to the three-way ball valve and the water inlet ball valve motor (1). 10. A backwash filter according to claim 9, characterized in that: the main cavity (202), fasteners (203) and connecting pipes (204) are all environmentally friendly non-metallic materials, and the valve The body (201) is made of metal, and the two sides of the main cavity (202) are connected to the connecting pipe (204) through welding process.

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