Pipe insertion-type pretreatment filter set

Abstract

The present invention relates to a pipe insertion-type pretreatment filter set. The pipe insertion-type pretreatment filter set protects a water purifier and improves water purification efficiency by purifying raw water beforehand upstream of the water purifier. The pipe insertion-type pretreatment filter set has a pretreatment filter, having a simple configuration, for effectively treating calcareous components or floating matter when the raw water has high hardness or high turbidity, and thus has low manufacturing and maintenance costs. The pipe insertion-type pretreatment filter set is easy to maintain due to the simple structure in which a pretreatment filter unit is coupled to a raw water pipe for supplying raw water and a purified water pipe connected to a water purifier is simple, and the pretreatment filter unit being easy to attach and detach.

Description

Tube insertion pretreatment filter set

[0001] The present invention relates to a tube-inserted pre-treatment filter set, and more specifically, to a tube-inserted pre-treatment filter set that protects a water purifier and improves water purification efficiency by purifying raw water in advance upstream of the water purifier, has a simple configuration of a pre-treatment filter that effectively treats limescale components or suspended matter when raw water has high hardness or turbidity, and thus has low manufacturing and maintenance costs, and is easily attached and detached between a raw water pipe that supplies raw water and a water purification pipe that is connected to a water purifier.

[0002] In general, a water purifier is a device that physically or chemically purifies contaminants and odors by passing raw water from natural sources such as tap water or groundwater through a filter, thereby providing clean water to the user. Most of them are directly connected to water pipes.

[0003] However, as mentioned above, since the raw water is directly connected to the water purifier, it is difficult to obtain clean water with only the filter installed in the water purifier due to all kinds of impurities contained in the raw water. In particular, if the raw water contains a large amount of hardness components such as calcium and magnesium, it causes lime scale, which clogs the water purifier filter or water path, reducing the purification efficiency or flow rate of the water purifier. In addition, there are cases where foreign substances or harmful substances are found in the purified water. In addition, if the raw water is highly turbid due to floating matter or foreign substances, it causes clogging of the water purifier filter or water path, lowering the purification efficiency. If such raw water is used, problems such as increased management and maintenance costs due to frequent filter replacement occur in existing water purifiers that users cannot clean the filters.

[0004]

[0005] Most general household water purifiers are of the filter-passing type, and can be classified into two types: direct water type and storage tank type (RO).

[0006] Direct-flow water purifiers are generally configured to install a pre-treatment filter, a carbon filter for removing residual chlorine, a hollow fiber membrane filter (the same applies to NP filters and ceramic filters), and a carbon filter for removing taste and odor all in a single housing. The above direct-flow water purifiers have a multi-step process by passing the water through the filters for each function in stages, but inorganic hardness such as calcium ions are not removed, so the purified water cannot function as high-quality drinking water. In addition, due to the functional structure of each filter, the flow rate of the water decreases rapidly, which creates an environment in which microorganisms such as bacteria can proliferate when the temperature conditions are right.

[0007]

[0008] Tank-type water purifiers are similar to the filter-passing method mentioned above, but the difference is that they remove contaminants by using a reverse osmosis membrane filter (membrane-RO) instead of a hollow fiber membrane (NP filter and ceramic filter are the same), so the reverse osmosis membrane water purification (RO) filter is excellent at removing organic and inorganic ions from untreated water, but when the lime components of the inorganic ions are inserted into the fine pores of the osmosis membrane, they become clogged and the purification function itself is lost, so there are problems such as frequent filter replacement, and since the instantaneous purified water amount is small, there are also management problems such as microbial growth due to the small amount of purified water stored in the tank.

[0009]

[0010] A composite filter assembly has been registered in Republic of Korea Utility Model Publication No. 20-0367658. This is a universal filter array type water purifier in which a carbon filter, a sediment filter, a ceramic filter, and a hollow fiber membrane filter are sequentially installed inside a cylindrical body with an inlet and an outlet to maximize the performance of the filter and to be manufactured in a compact size. As mentioned above, this does not have the function of removing inorganic ions, especially calcium ions derived from calcium carbonate (CaCO3). In fact, among the filters built into the body, such as the ceramic filter and the hollow fiber membrane filter, their function deteriorates over time due to easy clogging by inorganic ions in limescale water, so there is no significant difference from a general filter array type water purifier.

[0011]

[0012] According to the prior art, 'Pretreatment Device for Water Purifier' (Utility Model Registration No. 20-0420335), the pretreatment device for water purifier is described as a pretreatment device for water purifier that supplies purified water by hollow fiber to the water purifier and purifies it when supplying water to the water purifier, thereby protecting the water purifier, and that the hollow fiber filter used in the pretreatment water purification device is washed by flowing back the washing water purified in the washing filter, thereby extending the life of the filter.

[0013] In addition, it is described that it is characterized by comprising a washing filter having a first inlet and a first outlet and an interior made of hollow fibers to purify raw water into washing water, a hollow fiber filter having a second inlet and a second outlet and an interior made of hollow fibers to purify raw water into permeate, a three-way valve connected to the washing filter, the hollow fiber filter, and the raw water to control the flow direction of the raw water, a wastewater valve to open and close the discharge of wastewater separated from the filter unit, a compressed activated carbon filter having a third inlet and a third outlet and an interior made of compressed activated carbon to purify organic substances in the permeate, and a purified water valve to connect the purified water separated from the compressed activated carbon filter to the inlet of the water purifier and open and close the flow of the purified water.

[0014] However, these conventional pretreatment devices for water purifiers had the problem of increasing manufacturing and product costs due to their complex configuration and operation.

[0015] The present invention has been made to solve the problems of the prior art described above, and the technical task of the present invention is to provide a tube-inserted pretreatment filter set that protects the water purifier and improves the purification efficiency by purifying raw water in advance with a tube-inserted pretreatment filter set when supplying water to a water purifier, and has a simple configuration of a pretreatment filter that effectively treats limescale components or suspended matter when the raw water has high hardness or high turbidity, thereby reducing manufacturing and maintenance costs, and in which the pretreatment filter part inserted between the raw water pipe supplying the raw water and the water purification pipe connected to the water purifier is easily attached and detached.

[0016] According to one embodiment of the present invention, there is provided a tube insertion type pretreatment filter set (1000).

[0017] A pretreatment filter set (1000) having a tube insertion type is characterized by including a filter housing (100) fixed to a wall or frame, a pretreatment filter (200) rotatably attachable and detachable to the filter housing (100), a cover (300) rotatably attachable and detachable to the upper portion of the filter housing (100), a valve means inserted between a raw water pipe supplying raw water and the pretreatment filter (200), and a head part (500) inserted between the pretreatment filter (200) and a water purifier.

[0018]

[0019] In addition, the filter housing (100) of the present invention comprises a housing head portion (110) having one side open, the other side sealed with a head portion curved plate (114), and the side sealed with a head portion side plate (111), a housing body portion (120) in the shape of a cut cylinder that is formed integrally with the housing head portion (110), but has upper and lower sides open and a space formed inside,

[0020] It includes a cylindrical housing bottom part (130) formed integrally with the housing body part (120),

[0021] A semicircular groove (112) is formed on the side plates (111) of the head portion on both sides of the housing head portion (110).

[0022] The head portion curved plate (114) is characterized by having a valve mounting pillar (113) formed thereon.

[0023]

[0024] In addition, the valve means of the present invention is installed in the raw water observation side of the housing head (110) by the semicircular groove (112) of the head side plate (111) and the valve mounting pillar (113),

[0025] The head part (500) is installed on the water purifier side of the housing head part (110) by the semicircular groove (112) of the head part side plate (111).

[0026] The above valve means and head part (500) are detachably installed on the housing head part (110),

[0027] The head part (500) includes a head body (510) in which a flow path is formed inside, a head nipple (511) formed integrally with the head body (510) and discharging purified water toward the water purifier, and a head fitting (512) formed integrally with the head body (510) and coupled with the valve means.

[0028] The above valve means and the head part (500) are connected to each other so as to be rotatable but prevent leakage.

[0029] The head nipple (511) of the head part (500) and the semicircular groove (112) of the head part side plate (111) are characterized by being rotatably coupled to each other.

[0030]

[0031] In addition, in the head body (510) of the present invention, a raw water inlet branch pipe (515) is formed at the lower part of the head fitting (512) side through which raw water flows into the pretreatment filter (200).

[0032] A water purification outlet pipe (516) is formed at the lower part of the head nipple (511) through which water is discharged into the water purifier.

[0033] The raw water inlet branch pipe (515) is connected to the filter inlet pipe (218) of the pretreatment filter (200) by the head collar (530),

[0034] The water discharge branch pipe (516) is characterized by being connected to the filter outlet pipe (219) of the pretreatment filter (200) by a head collar (530).

[0035]

[0036] In addition, the valve means of the present invention is a disc valve (550),

[0037] The disc valve (550) includes a valve body (551) in which a flow path is formed, a disc (552) that opens and closes the flow path of the valve body (551), a rotary shaft (553) that rotatably installs the disc (552) on the valve body (551), a torsion spring (554) that causes rotation of the rotary shaft (553), and a storage room (555) that stores the torsion spring (554) inside.

[0038] The protruding head fitting (513) coupled with the valve means in the head portion (500) is characterized by having a protruding tip (514) that contacts the disk (552) of the disk valve (550) to rotate it.

[0039]

[0040] In addition, the present invention relates to a pretreatment filter (200) of a pretreatment filter set (1000) that is inserted and installed in a pipe supplying raw water from the upstream of a water purifier.

[0041] The pretreatment filter (200) includes a cylindrical upper filter case (210) having an internal space with the upper and side surfaces sealed and the lower surface open, and a lower filter case (220) that is coupled to seal the lower portion of the open upper filter case (210).

[0042] A filter inlet pipe (218) through which raw water flows into a cylindrical upper filter case (210) and a filter outlet pipe (219) through which purified water flows out are formed.

[0043] An upper filter bracket (212), a filter bracket (214), and a lower filter bracket (216) are installed in the internal space of the upper filter case (210).

[0044] It is characterized in that a pleated filter (215) is installed on the outside of the filter bracket (214).

[0045]

[0046] In addition, the pleated filter (215) of the present invention has an average surface area of ​​0.097 m 2 The range is ±10%, and the pore size has an average range of 10μm±10%.

[0047] The wrinkle filter (215) has an average surface area of ​​0.097 m 2 Adjust the outer diameter, inner diameter, number of teeth, height and length to achieve a range of ±10%.

[0048] The outer diameter is set by considering the cross-sectional area, flow velocity or flow rate of the flow passage formed between the upper filter case (210) and the pleated filter (215).

[0049] The inner diameter is set considering the outer diameter of the filter bracket (214).

[0050] High turbidity long-term flow performance is characterized by the cumulative flow rate at which flow rate reduction by 80% occurs when the turbidity of the raw water is 1, 3, 5, and 9 NTU, respectively, being 4,500 liters or more, 2,000 liters or more, 1,600 liters or more, and 930 liters or more.

[0051] The present invention has the effect of protecting the water purifier and improving the purification efficiency by purifying raw water in advance with a tube-inserted pretreatment filter set upstream of the water purifier and supplying the purified raw water to the water purifier, and the effect of having a simple configuration of a pretreatment filter that effectively treats limescale components or suspended matter in case the raw water has high hardness or high turbidity, thereby reducing manufacturing and maintenance costs, and the effect of having a simple connection structure of the pretreatment filter part that is connected to the raw water pipe that supplies the raw water and the water purification pipe that is connected to the water purifier, and easy attachment and detachment, thereby making it easy to maintain the tube-inserted pretreatment filter part.

[0052] Figure 1 is an exploded perspective view of a tube insertion type pretreatment filter set according to the present invention.

[0053] Figure 2 is an assembled perspective view of a tube insertion type pretreatment filter set according to the present invention.

[0054] FIG. 3 is a drawing showing a detailed configuration of a pretreatment filter of a tube-inserted pretreatment filter set according to the present invention.

[0055] Figure 4 is a drawing showing the internal cross-section of a pretreatment filter according to the present invention.

[0056] Figure 5 is a drawing showing a pleated filter of a tube-inserted pretreatment filter unit according to the present invention.

[0057] Figure 6 is a drawing explaining detailed specifications for each type of pleated filter of a tube insertion type pretreatment filter set according to the present invention.

[0058] Figure 7 is a drawing explaining the performance evaluation results for each type of pleated filter of the present invention.

[0059] Fig. 8 is a drawing illustrating a ball valve of a tube insertion type pretreatment filter set of the present invention.

[0060] Figure 9 is a drawing illustrating the head portion of the tube insertion type pretreatment filter set of the present invention.

[0061] Fig. 10 is a cross-sectional view and a drawing explaining the operation of the ball valve of the present invention.

[0062] Fig. 11 is a drawing explaining a cross-section of the head portion of the present invention.

[0063] Figure 12 is a drawing explaining the assembly of the filter housing (100) and the pretreatment filter (200) of the present invention.

[0064] Fig. 13 is a drawing illustrating a side cross-section of a disc valve, which is another embodiment of the present invention.

[0065] Fig. 14 is a drawing illustrating a cross-section of a disc valve, which is another embodiment of the present invention.

[0066] [Explanation of symbols]

[0067] 100: Filter housing 110: Housing head

[0068] 111: Head side plate 112: Semicircular groove

[0069] 113: Valve mounting column 114: Head curved plate

[0070] 120: Housing body 121: Grip home

[0071] 122: Fixed

[0072] 130: Housing bottom

[0073] 200: Preprocessing filter

[0074] 210: Upper filter case 211: O-ring

[0075] 212: Upper filter bracket 213: Sterilizing ball case

[0076] 214: Filter bracket 215: Pleated filter

[0077] 216: Lower filter bracket 217: Through hole

[0078] 218: Filter inlet pipe 219: Filter outlet pipe

[0079] 220: Lower filter case 230: Inlet

[0080] 231: Inlet bulkhead 232: Flow passage

[0081] 300: Cover 310: Cover joint

[0082] 400: Ball valve part 410: Lever

[0083] 420: C-ring 430: O-ring

[0084] 440: Shaft 440-1: Shaft Euro

[0085] 450: Pad

[0086] 460: Valve body 461: Valve nipple

[0087] 461-1: Valve Nipple Euro 462: Valve Fitting

[0088] 462-1: Valve fitting Euro 463: Mounting flange

[0089] 464: Mounting hole 465: Lever joint

[0090] 500: Head 510: Head body

[0091] 510-1: Head body bulkhead

[0092] 511: Head Nipple 511-1: Head Nipple Euro

[0093] 511-2: Head nipple groove 512: Head fitting

[0094] 512-1: Head fitting Euro 513: Protruding head fitting

[0095] 513-1: Protruding head fitting Euro 514: Protruding tip

[0096] 514-1: Slope 515: Water outflow branch

[0097] 516: Raw water inlet branch pipe

[0098] 530: Head collar

[0099] 550: Disc valve 551: Valve body

[0100] 552: Disc 553: Rotating shaft

[0101] 554: Torsion spring 555: Storage compartment

[0102] 556: Valve outlet 557: Valve nipple

[0103] Hereinafter, the present invention will be described in detail with reference to the drawings. It should be understood that the present invention can be modified in various ways and take various forms, and includes all modifications, equivalents, and alternatives included within the spirit and technical scope of the present invention.

[0104]

[0105] Referring to FIG. 1, a tube-insertable pretreatment filter set (1000) according to one embodiment of the present invention includes a filter housing (100) fixed to a wall or frame, a pretreatment filter (200) rotatably attachable and detachable to the filter housing (100), a cover (300) rotatably attachable and detachable to the upper portion of the filter housing (100), a ball valve unit (400) which is a valve means inserted between a raw water pipe supplying raw water and the pretreatment filter (200), and a head unit (500) inserted between the pretreatment filter (200) and a water purifier.

[0106] The filter housing (100) of the present invention includes a housing head portion (110) having one side open, the other side sealed with a head portion curved plate (114), and the side sealed with a head portion side plate (111), a housing body portion (120) in the shape of a cut cylinder that is formed integrally with the housing head portion (110) but has upper and lower sides open and a space formed inside, and a housing bottom portion (130) in the shape of a cylinder that is formed integrally with the housing body portion (120).

[0107] In addition, a semicircular groove (112) is formed on the side plates (111) of the head portion on both sides of the housing head portion (110), and a valve mounting pillar (113) is formed on the head portion curved plate (114), so that the ball valve portion (400) and the head portion (500) are detachably installed on the housing head portion (110).

[0108] In addition, a fixing hole (122) is formed in the housing body (120) so that it can be fixed to a wall or frame by a fastening member, and a grip groove (121) is formed in a semicircular cut at the side end of the cylindrical wall so that a user can easily grip a cylindrical pretreatment filter (200) installed in the housing body (120).

[0109]

[0110] In addition, the cover (300) of the present invention is composed of a curved plate and side plates on both sides, so that a space is formed inside, and a semicircular cover joint (310) is formed at the ends of both side plates, and is preferably manufactured from a transparent material so that the components accommodated in the internal space can be easily observed.

[0111]

[0112] FIG. 2 is an assembled perspective view of a tube-inserted pretreatment filter set (1000) according to the present invention, wherein the ball valve part (400) of the present invention is installed on the raw water pipe side of the housing head part (110) by the semicircular groove (112) of the head part side plate (111) and the valve mounting pillar (113), and the head part (500) is installed on the water purifier side of the housing head part (110) by the semicircular groove (112) of the head part side plate (111), and the specific joint structure of the ball valve part (400) and the housing head part (110) will be described in detail later.

[0113]

[0114] In addition, the pretreatment filter (200) of the present invention is installed so that the filter inlet pipe (218) and the filter outlet pipe (219) are connected to the head part (500) and are placed in the internal space of the housing body part (120), and the specific connection structure will be described in detail later.

[0115]

[0116] When the pretreatment filter (200) is installed in the filter housing (100) in this way, the cover coupling port (310) of the cover (300) is coupled so as to be in close contact with the outer surface of the valve nipple (461) protruding from the ball valve portion (400) toward the raw water observation side and the head nipple (511) protruding from the head portion (500) toward the water purifier side, and since the cover coupling port (310) is semicircular and the valve nipple (461) and the head nipple (511) are circular, the cover (300) can be installed so as to be rotatable around the valve nipple (461) and the head nipple (511).

[0117]

[0118] In addition, the ball valve part (400) of the present invention can be inserted between the raw water pipe and the pretreatment filter (200) to open and close the inflow of raw water, so that the inflow of raw water can be blocked when the pretreatment filter (200) or the head part (500) is replaced or detached.

[0119]

[0120] Next, the detailed configuration of the preprocessing filter (200) is described through Fig. 3.

[0121] The pretreatment filter (200) of the present invention largely includes a cylindrical upper filter case (210) having an upper portion and side portions that are sealed and an open portion at the lower portion to provide an internal space, and a lower filter case (220) that is coupled to seal the lower portion of the open upper filter case (210).

[0122] In addition, a filter inlet pipe (218) through which raw water flows in from the upper outer side of the cylindrical upper filter case (210) and a filter outlet pipe (219) through which purified water flows out are formed.

[0123] In addition, in the cylindrical upper filter case (210), an upper filter bracket (212) is installed on the upper side of the internal space, a filter bracket (214) is installed below it, a sterilizing ball case (213) is installed inside the filter bracket (214), a pleated filter (215) is installed on the outside of the filter bracket (214), and a lower filter bracket (216) is installed on the lower side of the internal space and below the filter bracket (214).

[0124]

[0125] FIG. 4 is a drawing showing the internal cross-section of a pretreatment filter (200) according to the present invention, in which a partition wall (231) is formed on the upper portion of the upper filter case (210) to form an inlet (230) between the upper filter bracket (212) and the upper portion of the upper filter case (210), and raw water flows into the cylindrical upper filter case (210) through the filter inlet pipe (218) and the inlet (230), and is purified while passing through the pleated filter (215) through the flow passage (232) formed between the upper filter case (210) and the pleated filter (215).

[0126] The purified water flows into the internal space through the through hole (217) of the filter bracket (214) and, since the lower part is sealed by the lower filter case (220), is discharged through the filter outlet pipe (219) on the upper side of the upper filter case (210). At this time, the purified water is sterilized while passing through the sterilizing ball of the sterilizing ball case (213) installed in the internal space of the pleated filter (33).

[0127] Additionally, a citric acid ball or phosphate ball for removing limescale can be installed inside the sterilizing ball case (213) along with the sterilizing ball to remove limescale.

[0128] In addition, the portion where the upper filter case (210) and the lower filter case (220) are joined can be fixedly joined through ultrasonic welding or rotational welding to prevent the raw water or purified water passing through the pleated filter from leaking outside the pretreatment filter.

[0129] In addition, since the present invention employs a pleated filter (215) as a filter for purifying raw water, it is possible to purify more raw water in the same amount of time compared to the conventional method, thereby greatly increasing the purification efficiency.

[0130]

[0131] FIG. 5 is a drawing showing a pleated filter (215) of a tube insertion type pretreatment filter set (1000) according to the present invention, showing the inner diameter, outer diameter, pleated mountain height, and filter length of the pleated filter (215).

[0132] The pleated filter (215) of the present invention is designed with three types of pleated filters (215) as shown in FIG. 6 to improve the turbidity of raw water, and the detailed specifications of each type of pleated filter (215) are as shown in FIG. 6.

[0133] Figure 7 is a drawing explaining the performance evaluation results for three types of pleated filters (215).

[0134] The hardness of the raw water for performance evaluation is based on 100 to 150 mg / L, and the pleated filters (215) are assumed to have the same initial pressure-dependent flow rate and pressure differential, and also to have the same pore size of 9.8 μm (average 10 μm ± 10%).

[0135] For performance evaluation, the turbidity of the raw water was changed to 1, 3, 5, and 9 NTU, and a high-turbidity long-term flow performance evaluation based on the initial turbidity removal performance and the cumulative flow rate at the time when the flow rate reduction reached 80% was performed on three types of pleated filters (215).

[0136] As a result, as shown in Fig. 7, the Type B pleated filter showed the best high turbidity long-term flow performance compared to other types, and the surface area of ​​the Type B pleated filter was 0.097 m 2 It was set to have an outer diameter of 45 mm, an inner diameter of 21 mm, 43 angles, a height of 11 mm, and a length of 103 mm.

[0137] Considering the turbidity performance evaluation results, the pleated filter of the present invention has an average surface area of ​​0.097 m 2 It was found that the turbidity removal performance was excellent from low to high turbidity when the range was ±10% and the pore size was in the average range of 10μm ±10%.

[0138] Additionally, the pleated filter has an average surface area of ​​0.097 m 2 In order to achieve a ±10% range, the outer diameter, inner diameter, number of holes, height, and length can be adjusted, but the outer diameter is set by considering the cross-sectional area, flow rate, or flow rate of the flow passage formed between the upper filter case (210) and the pleated filter, and the inner diameter is set by considering the outer diameter of the filter bracket (214). Preferably, the number of holes, height, and length are adjusted based on an outer diameter of 45 mm and an inner diameter of 21 mm.

[0139]

[0140] Next, the ball valve part (400) of the tube insertion type pretreatment filter set (1000) of the present invention will be described through FIG. 8.

[0141] The ball valve part (400) of the present invention includes a lever (410), a valve shaft (440) that rotates in combination with the lever (410), and a valve body (460) in which the valve shaft (440) is housed.

[0142] A valve body (460) is formed with a valve nipple (461) that is connected to a raw water pipe so that raw water can flow in, and a valve fitting (462) that is combined with a head fitting (512) of a head portion (500). In addition, a mounting flange (463) is formed so that the ball valve portion (400) is mounted on the filter housing (100), and a mounting hole (464) is formed on the mounting flange (463) so that it is mounted on a valve mounting pillar (113) of the filter housing (100) by a fastening member (see FIG. 12).

[0143]

[0144] Next, the head part (500) of the tube insertion type pretreatment filter set (1000) of the present invention will be described through FIG. 9.

[0145]

[0146] *The head part (500) of the present invention includes a head body (510) in which a flow path is formed inside, a head nipple (511) formed integrally with the head body (510) and discharging purified water toward the water purifier, and a head fitting (512) formed integrally with the head body (510) and coupled with a valve fitting (462) of a ball valve part (400).

[0147] In addition, a raw water inlet branch pipe (515) is formed at the lower part of the head fitting (512) side of the head body (510) through which raw water flows into the pretreatment filter (200), and a purified water outlet branch pipe (516) is formed at the lower part of the head nipple (511) side through which purified water flows out to the water purifier.

[0148] The raw water inlet branch pipe (515) is connected to the filter inlet pipe (218) of the pretreatment filter (200) by the head collar (530), and the purified water outlet branch pipe (516) is connected to the filter outlet pipe (219) of the pretreatment filter (200) by the head collar (530) (see FIG. 12).

[0149] Due to this structure, the pretreatment filter (200) can be easily attached and detached from the head portion (500) without a separate tool or separation means.

[0150]

[0151] Fig. 10 is a cross-sectional view and a drawing explaining the operation of the ball valve part (400) of the present invention, and Fig. 11 is a drawing explaining the cross-sectional view of the head part (500).

[0152] As shown in Fig. 10, when the ball valve part (400) is open, the valve shaft (440) rotates so that the shaft flow path (440-1) communicates with the valve fitting flow path (462-1) of the valve fitting and the valve nipple flow path (461-1) of the valve nipple, so that the raw water flows into the filter inlet pipe (218) of the pretreatment filter (200) through the valve nipple flow path (461-1), the shaft flow path (440-1), and the valve fitting flow path (462-1).

[0153]

[0154] As shown in Fig. 10, when the ball valve part (400) is closed, the valve shaft (440) rotates so that the shaft flow path (440-1) of the valve shaft (440) is not in communication with the valve fitting flow path (462-1) and the valve nipple flow path (461-1) of the valve nipple, thereby preventing raw water from flowing into the filter inlet pipe (218) of the pretreatment filter (200) through the valve nipple flow path (461-1), the shaft flow path (440-1), and the valve fitting flow path (462-1).

[0155]

[0156] In this way, since the ball valve part (400) is positioned on the upstream side of the pretreatment filter (200), the opening and closing of the ball valve part (400) can prevent or allow the raw water from flowing into the pretreatment filter (200), so that when the raw water is purified using the pretreatment filter (200), the ball valve part (400) can be opened, and when the pretreatment filter (200) needs to be replaced, the ball valve part (400) can be closed to easily prevent the raw water from flowing in.

[0157]

[0158] Fig. 11 illustrates a cross-section of a head portion (500), in which a head body partition (510-1) is formed inside the head body (510) to separate the head nipple flow path (511-1) of the head nipple (511) and the head fitting flow path (512-1) of the head fitting (512), so that the raw water of the head fitting flow path (512-1) and the purified water of the head nipple flow path (511-1) are separated without being mixed with each other.

[0159]

[0160]

[0161] *In addition, the head fitting path (512-1) of the head fitting (512) and the raw water inlet branch pipe (515) are connected to each other, and the head nipple path (511-1) and the purified water outlet branch pipe (516) are connected to each other, so that the raw water introduced into the head fitting path (512-1) is introduced into the pretreatment filter (200) through the raw water inlet branch pipe (515), and the purified water purified by the pretreatment filter (200) is discharged to the water purifier side through the pure water outlet branch pipe (516) and the head nipple path (511-1).

[0162]

[0163] Figure 12 is a drawing explaining the assembly of the filter housing (100) and the pretreatment filter (200) of the present invention.

[0164] First, the filter housing (100) is fixedly installed on a wall or frame through the housing fixing hole (122) of the filter housing (100) using a fastening member.

[0165]

[0166] Next, the mounting hole (464) formed in the mounting flange (463) of the ball valve part (400) is aligned with the valve mounting pillar (113) of the housing head part (110), the valve nipple (461) of the ball valve part (400) is placed in the semicircular groove (112) formed in the head side plate (111) of the housing head part (110), and then the mounting hole (464) of the mounting flange (463) and the valve mounting pillar (113) are joined using a fastening member to fix the ball valve part (400) to the housing head part (110).

[0167] The ball valve part (400) and the raw water pipe into which raw water flows in can be connected using a separate adapter or connector, or if necessary, by adding a separate extension pipe. When the raw water pipe and the ball valve part (400) are connected, the ball valve part (400) is closed before the water purifier is operated to prevent raw water from flowing in.

[0168]

[0169] Afterwards, the valve fitting (462) of the ball valve part (400) is inserted into the inside of the head fitting (512) of the head part, and the head nipple groove (511-2) formed in the head nipple (511) of the head part is coupled to the semicircular groove (112) of the side plate (111) of the head part. At this time, the valve fitting (462) of the ball valve part (400), the head fitting (512) of the head part, and the head nipple groove (511-2) of the head part and the semicircular groove (112) of the side plate (111) of the head part are rotatably coupled to each other, so that the filter inlet pipe (218) and the filter outlet pipe (219) of the pretreatment filter (200) can be easily attached and detached from the raw water inlet branch pipe (516) and the purified water outlet branch pipe (515) of the head part.

[0170] Next, a separate mounting flange (not shown in the drawing) is attached to the head nipple (511) of the head part and fixed to the mounting pillar (not shown in the drawing) on ​​the head part side using a separate fastening member.

[0171] At this time, a separate mounting flange coupled to the head nipple (511) of the head part is mounted so that the head nipple (511) and the head fitting (512) of the head part are rotatably coupled with the semicircular groove of the housing head part and the valve fitting (462) of the valve means.

[0172]

[0173] Due to this structure, when replacing or separating the pretreatment filter (200), the pretreatment filter (200) can be rotatably attached or detached with respect to the filter housing (100), making it easy to attach or detach the pretreatment filter (200) to the head portion (500).

[0174] Figures 13 and 14 are drawings illustrating a side cross-section and a plan cross-section of a disc valve (550), which is another valve means of the present invention.

[0175] Since the ball valve part (400) of FIGS. 8 and 10 is connected to the head part (500) and then manually operates the valve lever (410) to control the inflow of raw water, the ball valve part (400) must be manually closed to prevent the inflow of raw water when the pretreatment filter (200) or the head part (500) is replaced or separated.

[0176] Another valve means of the present invention, a disk valve (550), automatically prevents the inflow of raw water when the ball valve part (400) and the head part (500) are separated, and automatically allows the inflow of raw water when the ball valve part (400) and the head part (500) are combined, thereby facilitating the removal of the pretreatment filter (200) and the head part (500) together or when only the head part (500) is removed.

[0177]

[0178] FIG. 13 is a drawing illustrating a side cross-section of a disk valve (550) of the present invention. The disk valve (550) includes a valve body (551) in which a flow path is formed, a disk (552) that opens and closes the flow path of the valve body (551), a rotational shaft (553) that rotatably installs the disk (552) on the valve body (551), a torsion spring (554) that induces rotation of the rotational shaft (553), and a storage room (555) that stores the torsion spring (554) therein.

[0179] The torsion spring (554) of the disc valve (550) is set to close the flow path of the disc (552) in the initial state, and a rotational force that resists the spring force of the torsion spring (554) must be applied from the outside to allow the disc (552) to open the flow path.

[0180] In addition, a valve outlet (556) is formed on the downstream side of the disc (552) through which raw water flows out to the head part (500) in the valve body (551), a valve outlet path (556-1) is formed in the valve outlet (556), and a valve nipple (557) is formed on the upstream side of the disc (552) through which raw water flows in.

[0181]

[0182] In addition, a protruding head fitting (513) is formed on the side of the head portion (500) that is connected to the valve outlet (556) of the disc valve (550), and the protruding head fitting (513) is formed to be inserted into the valve outlet (556), a head fitting path (513-1) is formed inside the protruding head fitting (513), and a protruding tip (514) that contacts the disc (552) of the disc valve (550) to rotate is formed on the end side of the protruding head fitting (513).

[0183]

[0184] Fig. 14 is a drawing illustrating a cross-sectional view of the disk valve (550) of the present invention from above. When the protruding head fitting (513) of the head is inserted into the valve outlet (556) of the valve body, the protruding tip (514) of the head comes into contact with the edge of the valve outlet passage (556-1) and slides to pressurize the outer edge of the disk (552). Accordingly, the disk (552) whose outer edge is pressed rotates around the rotation axis (553) to open the valve outlet passage (556-1).

[0185] At this time, when the disk (552) rotates, the edge of the disk (552) forms an arc trajectory centered on the rotation axis (553), so the protruding tip (514) has an inclined surface (514-1) to maintain contact with the edge of the disk even when the disk (552) rotates.

[0186] The disk (552) rotates by contacting the inclined surface (514-1) of the protruding tip (514), so the rotation angle of the disk is determined by the inclined surface angle (514-1) of the protruding tip (514). As the inclined surface angle (514-1) increases, the rotation angle of the disk increases, but the thickness of the protruding tip (514) increases, causing the flow path to become blocked. Therefore, it is preferable to adjust the inclined surface angle (514-1) so that the rotation angle of the disk is in the range of 45 to 60 degrees.

[0187] When the rotation angle of the disc is less than 45 degrees, more than half of the valve outlet flow path (556-1) is closed, reducing the flow rate. When the rotation angle of the disc is more than 60 degrees, the thickness of the protruding tip (514) increases, causing the flow path to be excessively blocked.

[0188]

[0189] In addition, the length of the protruding tip (514) is determined by the insertion length of the protruding head fitting (513) and the valve outlet (556) and the installation position of the disc (552) within the valve outlet path (556-1), and must also have a length sufficient to cover the rotation angle range of the disc.

[0190]

[0191] In addition, the disk valve (550) of FIGS. 13 and 14 is installed and fixed to the valve mounting pillar (113) of the filter housing (100) by the mounting flange (463) and the mounting hole (464) in the same manner as the ball valve (400), which is the valve means of FIG. 8.

[0192] The disk valve (550) of FIGS. 13 and 14 has a valve nipple (557) similar to the ball valve (400) which is the valve means of FIG. 8, and the valve nipple (557) is rotatably installed in a semicircular groove (112) of the head side plate (111).

[0193]

[0194] In addition, the valve outlet (556) of the disc valve, the protruding head fitting (513) of the head, the head nipple groove (511-2) of the head, and the semicircular groove (112) of the side plate (111) of the head are rotatably connected to each other, so that the filter inlet pipe (218) and the filter outlet pipe (219) of the pretreatment filter (200) can be easily attached and detached from the raw water inlet pipe (516) and the purified water outlet pipe (515) of the head.

[0195]

[0196] Although the present invention has been described in detail through specific embodiments, this is intended to specifically explain the present invention, and the present invention is not limited thereto, and it is clear that modifications or improvements can be made by those skilled in the art within the technical spirit of the present invention.

Claims

1. It includes a filter housing (100) fixed to a wall or frame, a pre-treatment filter (200) rotatably attached and detached to the filter housing (100), a cover (300) rotatably attached and detached to the upper part of the filter housing (100), a valve means inserted between a raw water pipe supplying raw water and the pre-treatment filter (200), and a head part (500) inserted between the pre-treatment filter (200) and the water purifier. The filter housing (100) is A housing head portion (110) having one side open, the other side sealed with a head portion curved plate (114), and the side sealed with a head portion side plate (111), A housing body (120) in the shape of a cut cylinder formed integrally with the housing head (110), with the upper and lower parts open and a space formed inside, It includes a cylindrical housing bottom part (130) formed integrally with the housing body part (120), A semicircular groove (112) is formed on the side plates (111) of the head portion on both sides of the housing head portion (110). The head portion curved plate (114) is characterized in that a valve mounting pillar (113) is formed. Tube insertion pretreatment filter set (1000).

2. In claim 1, The above valve means is installed in the raw water observation section of the housing head section (110) by the semicircular groove (112) of the head section side plate (111) and the valve mounting column (113), The head part (500) is installed on the water purifier side of the housing head part (110) by the semicircular groove (112) of the head part side plate (111). The above valve means and head part (500) are detachably installed on the housing head part (110), The head part (500) includes a head body (510) in which a flow path is formed inside, a head nipple (511) formed integrally with the head body (510) and discharging purified water toward the water purifier, and a head fitting (512) formed integrally with the head body (510) and coupled with the valve means. The above valve means and the head part (500) are connected to each other so as to be rotatable but prevent leakage. The head nipple (511) of the head part (500) and the semicircular groove (112) of the head part side plate (111) are characterized in that they are rotatably coupled to each other. Tube insertion pretreatment filter set (1000).

3. In claim 2, A raw water inlet branch pipe (515) is formed at the lower part of the head fitting (512) side of the head body (510) through which raw water flows into the pretreatment filter (200). A water purification outlet pipe (516) is formed at the lower part of the head nipple (511) through which water is discharged into the water purifier. The raw water inlet branch pipe (515) is connected to the filter inlet pipe (218) of the pretreatment filter (200) by the head collar (530), The water purification outlet pipe (516) is characterized in that it is connected to the filter outlet pipe (219) of the pretreatment filter (200) by the head collar (530). Tube insertion pretreatment filter set (1000).

4. In claim 1, The above valve means is a disc valve (550), The disc valve (550) includes a valve body (551) in which a flow path is formed, a disc (552) that opens and closes the flow path of the valve body (551), a rotary shaft (553) that rotatably installs the disc (552) on the valve body (551), a torsion spring (554) that causes rotation of the rotary shaft (553), and a storage room (555) that stores the torsion spring (554) inside. The protruding head fitting (513) coupled with the valve means in the head portion (500) is characterized by having a protruding tip (514) that contacts the disk (552) of the disk valve (550) to rotate it. Tube insertion pretreatment filter set (1000).

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