External water purification mechanism of faucet

Abstract

The invention provides an external water purification mechanism of a water faucet, belongs to the technical field of water purification, and solves the technical problems that most existing front water purifiers are connected through threads, and water leakage is caused when the threads are worn and rotate reversely. The external water purification mechanism of the faucet comprises a shell part, a connecting mechanism is arranged on the shell part, reinforcing mechanisms are symmetrically arranged on the left side and the right side of the connecting mechanism, a filtering mechanism is arranged in the shell part, a descaling mechanism is arranged on the filtering mechanism, the connecting mechanism comprises a rubber sleeve arranged on the faucet in a sleeving mode, and an external threaded cylinder is fixed to the outer wall of the rubber sleeve; a brass sleeve is integrally formed at the bottom of the inner threaded cylinder, a nitrile rubber sleeve is fixed to the inner wall of the brass sleeve, and a nitrile rubber cylinder is in interference fit with the inner wall of the nitrile rubber sleeve. The device has the advantages that the blockage is dredged and the water yield is recovered only by detaching the sealing plug by improving the sealing performance of the joint and avoiding water leakage caused by thread abrasion and reverse rotation.

Description

Technical Field

[0001] The invention belongs to the technical field of water purification and relates to a water purification device, in particular to a faucet external water purification mechanism. Background Art

[0002] The external water purification mechanism of the faucet is a very important water purification equipment. Its main function is to filter large particles of impurities in the water, such as silt, rust, etc. This equipment is usually installed at the front end of the water supply system, so it is also called a "pre-filter". The installation position of the pre-filter is generally at the bottom of the water pipe well or the kitchen sink, so that the water can flow through the filter before entering the household water supply system. During installation, a main valve is generally provided with the pre-filter to facilitate the replacement and cleaning of the filter. The filtration accuracy of the pre-filter is usually between 5-30 microns, which can effectively remove large particles of impurities in the water and protect the downstream pipes, faucets, water-using appliances, etc. from clogging and corrosion by impurities. At the same time, the use of the pre-filter can also extend the service life of downstream equipment and reduce the frequency of maintenance and replacement.

[0003] After searching, it is found that a pre-water purifier is disclosed in Chinese patent literature [Application No.: 201910194041.1; Publication No.: CN109758814B]. This pre-water purifier embeds a secondary filter screen. When the main filter screen is blocked, the water pressure will become larger and larger, and the water cannot be filtered out. Therefore, the excessive water pressure will cause the main filter screen to move away from the water inlet. In this case, the water cannot be purified normally due to blockage. When the main filter screen moves to the outside of the two secondary filter screens, the rebound force of the spring is used to make the two auxiliary purification plates move toward the center, and finally contact and seal and block the entire purification chamber. At this time, the auxiliary purification plate is used for filtering.

[0004] Although the pre-water purifier disclosed in the patent uses filtered water pressure to drive the main filter plate and the auxiliary filter plate to move to solve the blockage caused by the accumulation of debris, the existing pre-water purifiers are mostly connected by threads, and water leakage will occur when the threads are worn and reversed. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose an external water purification mechanism for a faucet. The technical problem to be solved by the invention is: how to improve the sealing of the connection and avoid water leakage caused by thread wear and reversal.

[0006] The purpose of the present invention can be achieved by the following technical solutions: An external water purification mechanism for a faucet comprises a shell portion, a connecting mechanism is arranged on the shell portion, reinforcement mechanisms are symmetrically arranged on the left and right sides of the connecting mechanism, a filtering mechanism is arranged inside the shell portion, and a descaling mechanism is arranged on the filtering mechanism; The connecting mechanism includes a rubber sleeve mounted on the faucet, an external threaded barrel fixed on the outer wall of the rubber sleeve, an internal threaded barrel threadedly connected to the external threaded barrel, a brass sleeve integrally formed at the bottom of the internal threaded barrel, a nitrile rubber sleeve fixed on the inner wall of the brass sleeve, the inner wall of the nitrile rubber sleeve is interference fit with the nitrile rubber barrel, the inner wall of the nitrile rubber sleeve is a truncated cone structure, the inner diameter of the top end of the inner wall of the nitrile rubber sleeve is the same as the outer diameter of the rubber sleeve, and the outer diameter of the bottom end of the inner wall of the nitrile rubber sleeve is the same as the outer diameter of the nitrile rubber barrel.

[0007] The working principle of the present invention is: when connecting the external water purification mechanism and the faucet, the rubber sleeve is put on the faucet (the inner diameter of the rubber sleeve is smaller than that of the faucet, and the rubber sleeve is a soft elastic material, and its internal deformation realizes interference connection between the faucet and the external threaded tube), the external threaded tube is installed on the faucet with the rubber sleeve, and the internal threaded tube is rotated so that it is at the upper end of the external threaded tube, so that the bottom end of the external threaded tube is exposed from the bottom of the nitrile rubber sleeve, and the outer shell is held to make the nitrile rubber tube sleeve on the bottom end of the external threaded tube. At this time, the internal threaded tube is rotated to generate threaded transmission with the external threaded tube and move downward, the brass sleeve and the nitrile rubber sleeve move downward with the brass sleeve, and the truncated cone structure of the inner wall of the nitrile rubber sleeve is in close contact with the nitrile rubber tube (the connection surface between the two gradually approaches a vacuum state). During the contact process, the nitrile rubber sleeve and the nitrile rubber tube squeeze and deform each other to realize an interference fit connection method, and the connection stability of the outer shell and the faucet is further enhanced by the reinforcement mechanism.

[0008] The shell part comprises an upper shell, the bottom of which is threadedly connected to a lower shell, a sealing ring is sandwiched between the upper shell and the lower shell, and two drainage holes are arranged at the bottom of the lower shell, and sealing plugs are plugged in the two drainage holes.

[0009] With the above structure, both the upper shell and the lower shell are made of transparent food-grade plastic. The upper shell and the lower shell can be disassembled and assembled by rotating them in opposite directions. The sealing plug is clamped between the upper shell and the lower shell during the above-mentioned installation and rotation process, which improves the sealing performance, and the glue-free installation with water is safer.

[0010] The reinforcement mechanism includes a groove slide rail fixed on the top of the upper shell body, the inner wall of the groove slide rail is slidably connected with a convex slider and an I-shaped plate, a spring is fixed between the convex slider and the I-shaped plate, a plurality of T-shaped blocks are inserted between the I-shaped plate and the groove slide rail, the top of the convex slider is rotatably connected with a connecting rotating plate, the connecting rotating plate is rotatably connected with a turning buckle at one end away from the convex slider, the turning buckle resists against a limiting rod, the limiting rod is fixed at the top of the brass sleeve, and the top of the limiting rod is integrally formed with a limiting piece that is the same as the square hole opened at the top of the turning buckle.

[0011] The above structure is adopted, and the resettable length of the spring restoring force is shortened by inserting a T-shaped block between the I-plate and the groove slide rail, thereby realizing the adjustment of the elastic potential energy. After the nitrile rubber sleeve and the nitrile rubber tube are connected by interference fit, the turn buckle is brought into contact with the limit plate through the rotation between the turn plate and the convex slider and the rotation between the turn buckle and the turn plate, and the turn buckle is passed through the limit plate to contact the limit rod to realize the engagement of the turn buckle, and the restoring force of the spring drives the convex slider to move, and the lateral distance between the convex slider and the turn buckle is lengthened so that the turn buckle is close to the limit rod, thereby realizing the strengthening of the connection between the upper shell and the brass sleeve through the reinforcement mechanism, applying downward force to the brass sleeve, reducing the risk of reverse upward movement of the internal threaded tube, and improving the connection stability.

[0012] The bottom ends of the left and right sides of the plurality of T-shaped blocks are both inclined surfaces.

[0013] With the above structure, when inserting the T-block, the I-shaped plate is slid toward the convex slider to insert the T-block. The inclined surface makes the bottom of the T-shaped block close to a line, making it easier to insert between the I-shaped plate and the groove slide rail, making the adjustment of the spring elastic potential energy more convenient.

[0014] The filtering mechanism includes a water inlet PPR pipe fixed to the bottom end of the inner wall of the nitrile rubber cylinder, two sewage outlets are arranged on the lower outer wall of the water inlet PPR pipe, a filter element body is detachably connected between the upper shell body and the lower shell body, a water outlet hose is fixed to the bottom end of the filter element body, and the water inlet PPR pipe is fixedly connected to the upper shell body.

[0015] With the above structure, the water from the faucet enters the outer shell composed of the upper shell and the lower shell from the water inlet PPR pipe, the water is filtered through the filter element body and then flows out through the water outlet hose, and the filter element body is connected to the upper shell and the lower shell by threads (this is a common filter element installation technology) to achieve the purification of the water out of the faucet.

[0016] The descaling mechanism includes a scraper slidably connected to the filter element body, the inner walls of the upper shell and the lower shell are in contact with the scraper, a circular hole slidably connected to the outer wall of the water inlet PPR pipe is opened on the scraper, a rebound flap is rotatably connected to the bottom of the circular hole, a sealing layer is arranged between the rebound flap and the scraper, the sealing layer is fixed on the rebound flap, a connecting rod penetrating the bottom of the lower shell is fixed to the bottom of the scraper, a handle is fixed to the bottom of the connecting rod, and a rubber ring fixedly connected to the lower shell is arranged between the connecting rod and the lower shell.

[0017] With the above structure, when the outer surface of the filter element body is blocked by sediment and scale, when the scraper is on the upper inner wall of the upper shell, the water inlet PPR pipe is a hard water pipe. At this time, the rebound flap is pushed down, and the water inlet PPR pipe passes through the scraper. The water outlet at the bottom of the water outlet hose is blocked with a finger, and the faucet is turned on to make the water stay between the lower shell and the scraper. When the water flow fills the space between the scraper and the lower shell, the faucet is closed, the sealing plug is pulled out, and the handle is pulled down. The connecting rod moves down with the handle. During the movement of the connecting rod, it contacts the rubber ring. The rubber ring ensures the sealing performance, and the scraper moves down with the connecting rod. During the process of the scraper moving down to the bottom of the water inlet PPR pipe, the rebound flap loses its limit and drives the sealing layer to be close to the scraper through its own strong spring hinge to prevent water from overflowing from the round hole to the top of the scraper during the downward movement of the scraper, thereby reducing the downward water flow scouring force and the sliding process of the scraper. During the process, it is always in contact with the filter element. The scraper moves up and down to scrape off the blocked dirt on the surface of the filter element, so that the dirt is flushed out with the water through the drain hole exposed after the sealing plug is pulled out. During the upward movement of the scraper, when the scraper is located below the water inlet PPR pipe and the rebound flap is closed, the faucet is turned on to fill the space between the scraper and the upper shell with water. The scraper moves up to continue cleaning the dirt, so that the dirt is mixed into the water between the scraper and the upper shell. When the scraper moves to the drain port, the water inlet PPR pipe is in a slightly open state with respect to the rebound flap, and the water with dirt flows out from the drain port to the bottom of the scraper, and then flushes out from the drain hole, thereby solving the blockage problem without dismantling the water purification mechanism, and there is no need to disassemble the connecting mechanism and the reinforcement mechanism, as well as the threaded disassembly between the upper shell and the lower shell, thereby reducing the wear caused by multiple disassemblies and improving the durability of the water purification mechanism.

[0018] The scraper and the connecting rod are both made of brass.

[0019] With the above structure, the brass material is stable and has antibacterial function, avoiding water pollution caused by the increase in structure.

[0020] The water outlet hose is provided with a steering mechanism, which includes a first connecting rod rotatably connected to the bottom of the lower shell body, an end of the first connecting rod away from the lower shell body is rotatably connected to a second connecting rod, an end of the second connecting rod away from the first connecting rod is fixed with a placement ring, and the water outlet hose contacts the inner wall of the placement ring.

[0021] With the above structure, the water outlet hose moves with the placement ring, the placement ring rotates with the second connecting rod, the second connecting rod rotates with the first connecting rod, and the rotating connection method makes the angle between the second connecting rod and the first connecting rod adjustable, and the angle between the second connecting rod and the lower shell body adjustable, thereby realizing the adjustment of the water outlet direction of the water outlet hose and making the water outlet angle adapt to more usage requirements.

[0022] The lower shell and the first connecting rod are rotatably connected via a rotating pair, and the first connecting rod and the second connecting rod are rotatably connected via a damping universal joint.

[0023] With the above structure, the damping universal joint is a solid sphere wrapped with silicone rubber that rotates in a metal hollow sphere with an opening. The solid sphere and the metal hollow sphere are respectively connected to the second connecting rod and the first connecting rod. The rotating pair realizes the forward and backward rotation of the first connecting rod, and the second connecting rod moves with the solid sphere. The second connecting rod is held by hand to drive the solid sphere to rotate flexibly in the metal hollow sphere, thereby realizing the flexibility of the water outlet angle of the water outlet hose.

[0024] A water retaining mechanism is arranged on the top of the upper shell body, and the connecting mechanism and two reinforcing mechanisms are arranged inside the water retaining mechanism. The water retaining mechanism includes a connecting sleeve which is sleeved on the faucet above the rubber sleeve, and a soft suction cup is integrally formed on the bottom of the connecting sleeve, and the bottom of the soft suction cup contacts a silicone rubber pad fixed on the top of the upper shell body.

[0025] With the above structure, after the connection mechanism and the reinforcement mechanism are installed, the connection sleeve is held and moved on the faucet outlet pipe (the connection sleeve is made of silicone rubber and is fixed on the outlet pipe by deformation and extrusion. The connection sleeve can be opened to move on the route of the outlet pipe), so that the soft suction cup contacts the silicone rubber pad, and force is applied on the outer surface of the soft suction cup by holding the soft suction cup to squeeze the soft suction cup to expel the air between the soft suction cup and the silicone rubber pad, so that the soft suction cup is adsorbed on the silicone rubber pad fixed on the upper shell, and the connection mechanism and the reinforcement mechanism are both stored in the soft suction cup. When using water, water that splashes onto the connection mechanism and the reinforcement mechanism is blocked by the soft suction cup, thereby preventing water from accumulating in the connection mechanism and the reinforcement mechanism and breeding bacteria.

[0026] Compared with the prior art, the external water purification mechanism of the faucet has the following advantages: 1. By setting up a connecting mechanism and utilizing the interference fit of the rubber sleeve, the water purification mechanism can be adapted to faucets of more specifications. At the same time, the deformation and extrusion between the truncated cone inner diameter of the nitrile rubber sleeve and the nitrile rubber tube are utilized to reduce the gap between the contact surfaces, thereby improving the sealing performance while rotating the installation method of the internal threaded tube for easy installation. In addition, the rubber sleeve is squeezed during the rotation of the internal threaded tube so that the external threaded tube can be installed on faucets of different specifications. The connection between the buckle plate connected to the upper shell in the reinforcement mechanism and the limit rod and the limit plate connected to the brass sleeve is used to increase the connection force at both ends of the connection, thereby avoiding the situation where the thread is reversed due to insufficient force due to the long service life of the thread, resulting in water leakage. In addition, the split connection method allows the threaded parts to be partially replaced, saving maintenance costs.

[0027] 2. By setting up to utilize the elastic potential energy of the spring to reinforce the connection mechanism and improve the connection stability, the elastic potential energy of the spring is adjusted by adding a T-shaped block between the I-shaped plate and the groove slide rail at the end of the spring. The operation is simple and more flexible. At the same time, the end of the T-shaped block is provided with an inclined surface to facilitate insertion into the gap between the I-shaped plate and the groove slide rail, which is easy to operate.

[0028] 3. By setting up a descaling mechanism, pull out the sealing plug and hold the handle, so that the handle drives the connecting rod to drive the scraper to scrape the dirt and sand accumulated on the surface of the filter element into the water, and use the water flow in the shell to flush and remove dirt. This descaling process does not require disassembly of the upper shell and the lower shell, nor does it require disassembly of the connecting mechanism and the reinforcement mechanism, reducing the use of threads in the water purification mechanism, thereby achieving descaling and unblocking blockages while reducing wear costs, thereby ensuring the service life of the water purification mechanism.

[0029] 4. By setting up a water retaining mechanism, the top of the upper shell is prone to water accumulation and breeding of bacteria due to splashing of water droplets during water use. The top of the upper shell is covered with a soft suction cup for shielding. The outer surface area of ​​the soft suction cup is large, and the air between the soft suction cup and the silicone rubber pad can be discharged by squeezing, which is easy to operate. The inclined outer surface of the soft suction cup is conducive to the flow of water droplets, thereby improving the hygiene of the water purification mechanism.

[0030] 5. By setting a steering mechanism, the water outlet direction of the water outlet hose can be flexibly adjusted, so that the water outlet direction can meet more water needs and has flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 It is a schematic structural diagram of the sealing plug part of the present invention.

[0033] Figure 3 It is a structural schematic diagram of the connecting mechanism part in the present invention.

[0034] Figure 4 It is a schematic structural diagram of the external threaded barrel part of the present invention.

[0035] Figure 5 It is a structural cross-sectional view of the rubber sleeve part in the present invention.

[0036] Figure 6 It is a structural schematic diagram of the reinforcement mechanism part in the present invention.

[0037] Figure 7 It is a structural schematic diagram of the I-shaped plate part in the present invention.

[0038] Figure 8 It is a structural schematic diagram of the T-shaped block part in the present invention.

[0039] Fig. 9 It is a schematic structural diagram of the descaling mechanism part of the present invention.

[0040] Fig.10 yes Figure 7 A magnified view of the structure at center.

[0041] Fig.11It is a structural schematic diagram of the rebound flip cover part in the present invention.

[0042] Fig.12 It is a structural schematic diagram of the water retaining mechanism.

[0043] Fig.13 It is a structural diagram of the steering mechanism part.

[0044] In the figure, 1. outer shell; 101. upper shell; 102. lower shell; 103. sealing ring; 104. sealing plug; 2. filtering mechanism; 201. water inlet PPR pipe; 202. filter element body; 203. water outlet hose; 204. sewage outlet; 3. connecting mechanism; 301. rubber sleeve; 302. external threaded cylinder; 303. internal threaded cylinder; 304. brass sleeve; 305. nitrile rubber sleeve; 306. nitrile rubber cylinder; 4. descaling mechanism; 401. scraper; 402. rebound flap; 403. sealing layer; 404. connecting rod ; 405, rubber ring; 406, handle; 5, reinforcement mechanism; 501, groove slide rail; 502, convex slider; 503, spring; 504, I-shaped plate; 505, T-block; 506, connecting rotating plate; 507, turn buckle; 508, limit rod; 509, limit plate; 6, water retaining mechanism; 601, connecting sleeve; 602, soft suction cup; 603, silicone rubber pad; 7, steering mechanism; 701, rotating pair; 702, first connecting rod; 703, damping universal joint; 704, second connecting rod; 705, placement ring. DETAILED DESCRIPTION

[0045] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0046] like Figure 1-Figure 13As shown, the external water purification mechanism of the faucet includes a shell part 1, a connecting mechanism 3 is arranged on the shell part 1, and a reinforcement mechanism 5 is symmetrically arranged on the left and right sides of the connecting mechanism 3, a filtering mechanism 2 is arranged in the shell part 1, and a descaling mechanism 4 is arranged on the filtering mechanism 2, and the connecting mechanism 3 includes a rubber sleeve 301 sleeved on the faucet, an external threaded cylinder 302 is fixed to the outer wall of the rubber sleeve 301, an internal threaded cylinder 303 is threadedly connected to the external threaded cylinder 302, a brass sleeve 304 is integrally formed at the bottom of the internal threaded cylinder 303, a nitrile rubber sleeve 305 is fixed to the inner wall of the brass sleeve 304, and the inner wall of the nitrile rubber sleeve 305 is interference fit There is a nitrile rubber tube 306, the inner wall of the nitrile rubber sleeve 305 is a truncated cone structure, the inner diameter of the top of the inner wall of the nitrile rubber sleeve 305 is the same as the outer diameter of the rubber sleeve 301, and the outer diameter of the bottom of the inner wall of the nitrile rubber sleeve 305 is the same as the outer diameter of the nitrile rubber tube 306. In this embodiment, when connecting the external water purification mechanism and the faucet, the rubber sleeve 301 is put on the faucet (the inner diameter of the rubber sleeve 301 is smaller than the faucet, and the top of the inner diameter of the rubber sleeve 301 is provided with a chamfer to facilitate the insertion into the faucet. The rubber sleeve 301 is a soft elastic material, and its internal deformation realizes interference connection between the faucet and the external threaded tube 302). The external threaded tube 302 moves with the rubber The rubber sleeve 301 is installed on the faucet, and the internal threaded tube 303 is rotated to be at the upper end of the external threaded tube 302, so that the bottom end of the external threaded tube 302 is exposed from the bottom of the nitrile rubber sleeve 305. The outer shell 1 is held to make the nitrile rubber tube 306 sleeved on the bottom end of the external threaded tube 302. At this time, the internal threaded tube 303 is rotated to generate a threaded transmission with the external threaded tube 302 and move downward. During the rotation process, the petals of the external threaded tube 302 are closed (the bottom end of the external threaded tube 302 starts to be divided into four petals, and the initial state of the four petals being separated is a truncated cone shape). During the closing process of the petals of the external threaded tube 302, the external threaded tube 302 is squeezed. The internal rubber sleeve 301 (the inner wall of the rubber sleeve 301 is in the shape of an inverted truncated cone) is squeezed and pressed against the outer wall of the faucet, so that faucets with different outer diameters can be installed. The brass sleeve 304 and the nitrile rubber sleeve 305 move downward with the brass sleeve 304. The truncated cone structure of the inner wall of the nitrile rubber sleeve 305 is in close contact with the nitrile rubber tube 306 (the connection surface between the two gradually approaches a vacuum state). During the contact process, the nitrile rubber sleeve 305 and the nitrile rubber tube 306 are squeezed and deformed to achieve an interference fit connection method, and the connection stability between the outer shell 1 and the faucet is further enhanced by the reinforcement mechanism 5.

[0047] The outer shell 1 includes an upper shell 101, and a lower shell 102 is threadedly connected to the bottom of the upper shell 101. A sealing ring 103 is sandwiched between the upper shell 101 and the lower shell 102. Two drain holes are opened at the bottom of the lower shell 102, and sealing plugs 104 are plugged in the two drain holes. The water inlet PPR pipe 201 is fixedly connected to the upper shell 101. In this embodiment, the upper shell 101 and the lower shell 102 are both made of transparent food-grade plastic. The upper shell 101 and the lower shell 102 can be held and rotated in opposite directions to achieve disassembly and assembly. The sealing plug 104 is clamped between the upper shell 101 and the lower shell 102 during the above-mentioned installation and rotation process, which improves the sealing performance, and the glue-free installation with water is safer.

[0048] The reinforcing mechanism 5 includes a groove slide rail 501 fixed on the top of the upper shell 101, and a convex slider 502 and an I-shaped plate 504 are slidably connected to the inner wall of the groove slide rail 501, a spring 503 is fixed between the convex slider 502 and the I-shaped plate 504, and a plurality of T-shaped blocks 505 are inserted between the I-shaped plate 504 and the groove slide rail 501. A connecting rotating plate 506 is rotatably connected to the top of the convex slider 502, and a rotating buckle 507 is rotatably connected to the end of the connecting rotating plate 506 away from the convex slider 502, and the rotating buckle 507 is internally abutted against a limiting rod 508, and the limiting rod 508 is fixed to the top of the brass sleeve 304, and a limiting piece 509 identical to the square hole opened at the top of the rotating buckle 507 is integrally formed on the top of the limiting rod 508. In this embodiment, the spring 503 is shortened by inserting the T-shaped block 505 between the I-shaped plate 504 and the groove slide rail 501. The resettable length of the restoring force of the spring 503 is used to adjust the elastic potential energy. After the nitrile rubber sleeve 305 and the nitrile rubber cylinder 306 are connected by interference fit, the turn buckle 507 is brought into contact with the limiting plate 509 through the rotation between the rotating plate 506 and the convex slider 502 and the rotation between the turn buckle 507 and the rotating plate 506. The turn buckle 507 passes through the limiting plate 509 and contacts the limiting rod 508 to achieve the engagement of the turn buckle 507. The restoring force of the spring 503 drives the convex slider 502 to move. The elongation of the lateral distance between the convex slider 502 and the turn buckle 507 makes the turn buckle 507 close to the limiting rod 508, thereby strengthening the connection between the upper shell 101 and the brass sleeve 304 through the reinforcement mechanism 5, applying a downward force to the brass sleeve 304, reducing the risk of reverse upward movement of the internal threaded cylinder 303, and improving the connection stability.

[0049] The bottom ends of the left and right sides of the multiple T-shaped blocks 505 are inclined. In this embodiment, when inserting the T-shaped block 505, the I-shaped plate 504 is slid toward the convex slider 502 to insert the T-shaped block 505. The inclined surface makes the bottom of the T-shaped block 505 close to a linear shape, which is easier to insert between the I-shaped plate 505 and the groove slide rail 501, making it more convenient to adjust the elastic potential energy of the spring 503.

[0050] The filtering mechanism 2 includes an inlet PPR pipe 201 fixed to the bottom end of the inner wall of the nitrile rubber cylinder 306, and two sewage outlets 204 are opened on the outer wall of the inlet PPR pipe 201. A filter element body 202 is detachably connected between the upper shell 101 and the lower shell 102, and a water outlet hose 203 is fixed to the bottom end of the filter element body 202. In this embodiment, water from the faucet enters the outer shell composed of the upper shell 101 and the lower shell 102 from the inlet PPR pipe 201, and the water passes through the filter element body 202 for filtering and then flows out through the water outlet hose 203. The filter element body 202 is connected to the upper shell 102 and the lower shell 102 by threads (this is a common filter element installation technology) to achieve purification of the water out of the faucet.

[0051] The descaling mechanism 4 includes a scraper 401 slidably connected to the filter element body 202, the inner walls of the upper shell 101 and the lower shell 102 are in contact with the scraper 401, a circular hole slidably connected to the outer wall of the water inlet PPR pipe 201 is opened on the scraper 401, a rebound flap 402 is rotatably connected to the bottom of the circular hole, a sealing layer 403 is provided between the rebound flap 402 and the scraper 401, and the sealing layer 403 is fixed on the rebound flap 402, a connecting rod 404 penetrating the bottom of the lower shell 102 is fixed to the bottom of the scraper 401, a handle 406 is fixed to the bottom of the connecting rod 404, a rubber ring 405 fixedly connected to the lower shell 102 is provided between the connecting rod 404 and the lower shell 102, in the present invention In the embodiment, when the outer surface of the filter element body 202 is clogged with silt and scale, when the scraper 401 is on the upper inner wall of the upper shell 101, the water inlet PPR pipe is a hard water pipe. At this time, the rebound flap 402 is pushed downward, and the water inlet PPR pipe 201 passes through the scraper 401. The water outlet at the bottom end of the water outlet hose 203 is blocked with a finger, and the faucet is turned on to allow water to stay between the lower shell 102 and the scraper 401. When the water flow fills the space between the scraper 401 and the lower shell 102, the faucet is closed, the sealing plug 104 is pulled out, and the handle 406 is pulled down. The connecting rod 404 moves downward with the handle 406. During the movement of the connecting rod 404, it contacts the rubber ring 405. The rubber ring 405 ensures the sealing performance. 01 As the connecting rod 404 moves downward, the scraper 401 moves downward to the bottom of the water inlet PPR pipe 201, and the rebound flap 402 loses its limit and drives the sealing layer 403 to be close to the scraper 401 through its own strong spring hinge to prevent water from overflowing from the round hole to the top of the scraper 401 during the downward movement of the scraper 401, thereby reducing the downward scouring force of the water flow. The scraper 401 is always in contact with the filter element 202 during the sliding process. The scraper 401 moves up and down to scrape off the blocked dirt on the surface of the filter element 202, so that the dirt is flushed out with the water through the drainage hole exposed after the sealing plug 104 is pulled out. During the upward movement of the scraper 401, when the scraper 401 is located below the water inlet PPR pipe 201, the rebound flap 402 is closed. When the faucet is closed, open the faucet to fill the space between the scraper 401 and the upper shell 101 with water, move the scraper 401 upward to continue cleaning the dirt, and mix the dirt into the water between the scraper 401 and the upper shell 101. When the scraper 401 moves to the position of the sewage outlet 204, the water inlet PPR pipe 204 is in a slightly open state with respect to the rebound flap 402, and the water with dirt flows out from the sewage outlet 204 to the bottom of the scraper 401, and then rushes out from the sewage hole, thereby solving the blockage problem without dismantling the water purification mechanism. There is no need to disassemble the connecting mechanism 3 and the reinforcing mechanism 5, as well as the threaded disassembly between the upper shell 101 and the lower shell 102, thereby reducing the wear caused by multiple disassemblies and improving the durability of the water purification mechanism.

[0052] The scraper 401 and the connecting rod 404 are both made of brass. In this embodiment, the brass material is stable and has antibacterial function, thereby avoiding water pollution caused by the increase in structure.

[0053] A steering mechanism 7 is provided on the water outlet hose 203, and the steering mechanism 7 includes a first connecting rod 702 rotatably connected to the bottom of the lower shell 102, and the end of the first connecting rod 702 away from the lower shell 102 is rotatably connected to the second connecting rod 704, and the end of the second connecting rod 704 away from the first connecting rod 702 is fixed with a placement ring 705, and the water outlet hose 203 contacts the inner wall of the placement ring 705. In this embodiment, the water outlet hose 203 moves with the placement ring 705, the placement ring 705 rotates with the second connecting rod 704, and the second connecting rod 704 rotates with the first connecting rod 702. The rotational connection method makes the angle between the second connecting rod 702 and the first connecting rod 702 adjustable, and the angle between the second connecting rod 702 and the lower shell 102 adjustable, thereby realizing the adjustment of the water outlet direction of the water outlet hose 203 and making the water outlet angle adapt to more usage requirements.

[0054] The lower shell 102 and the first connecting rod 702 are rotationally connected via a rotating pair 701, and the first connecting rod 702 and the second connecting rod 704 are rotationally connected via a damping universal joint 703. In the present embodiment, the damping universal joint 703 is a solid sphere wrapped with silicone rubber that rotates in a metal hollow sphere with an opening. The solid sphere and the metal hollow sphere are respectively connected to the second connecting rod 704 and the first connecting rod 702. The rotating pair 701 realizes the forward and backward rotation of the first connecting rod 702, and the second connecting rod 704 moves with the solid sphere. The second connecting rod 704 is held by hand to drive the solid sphere to rotate flexibly in the metal hollow sphere, thereby realizing the flexibility of the water outlet angle of the water outlet hose 203.

[0055] A water retaining mechanism 6 is provided on the top of the upper shell 101, and the connecting mechanism 3 and the two reinforcing mechanisms 5 are all provided in the water retaining mechanism 6. The water retaining mechanism 6 includes a connecting sleeve 601 which is sleeved on the faucet and located above the rubber sleeve 301. A soft suction cup 602 is integrally formed at the bottom of the connecting sleeve 601. The bottom of the soft suction cup 602 contacts a silicone rubber pad 603 fixed on the top of the upper shell 101. In this embodiment, after the connecting mechanism 3 and the reinforcing mechanism 5 are installed, the handheld connecting sleeve 601 is moved on the water outlet pipe of the faucet (the connecting sleeve 601 is made of silicone rubber and is fixed on the water outlet pipe by deformation and extrusion. The connecting sleeve 601 can be opened to move along the route of the water outlet pipe), so that the soft suction cup 602 contacts the silicone rubber pad 603, and the outer surface of the soft suction cup 602 is held and force is applied to squeeze the soft suction cup 602 to expel the air between the soft suction cup 602 and the silicone rubber pad 603, so that the soft suction cup 602 is adsorbed on the silicone rubber pad 603 fixed above the upper shell 101, and the connecting mechanism 3 and the reinforcement mechanism 5 are both stored in the soft suction cup 602. When using water, the water that splashes onto the connecting mechanism 3 and the reinforcement mechanism 5 is blocked by the soft suction cup 602, so as to prevent the water flow from accumulating in the connecting mechanism 3 and the reinforcement mechanism 5 to breed bacteria.

[0056] The working principle of the present invention is as follows: the upper shell 101 and the lower shell 102 are both made of transparent food-grade plastic. The upper shell 101 and the lower shell 102 can be held in the hand and rotated in the opposite direction to realize disassembly and assembly. The sealing plug 104 is clamped between the upper shell 101 and the lower shell 102 during the above-mentioned installation and rotation process. When connecting the external water purification mechanism and the faucet, the rubber sleeve 301 is sleeved on the faucet (the inner diameter of the rubber sleeve 301 is slightly smaller than that of the faucet, and the rubber sleeve 301 is a soft elastic material, and its internal deformation realizes interference connection between the faucet and the external threaded barrel 302). The external threaded barrel 302 is installed on the faucet with the rubber sleeve 301, and the internal threaded barrel 301 is rotated to be at the upper end of the external threaded barrel 302, so that the bottom end of the external threaded barrel 302 is exposed from the bottom of the nitrile rubber sleeve 305. The outer shell 1 is held and the nitrile rubber cylinder 306 is sleeved on the bottom end of the external thread cylinder 302. At this time, the internal thread cylinder 303 is rotated to generate a threaded transmission with the external thread cylinder 302 and move downward. The brass sleeve 304 and the nitrile rubber sleeve 305 move downward with the brass sleeve 304. The truncated cone structure of the inner wall of the nitrile rubber sleeve 305 is in close contact with the nitrile rubber cylinder 306 (the connection surface between the two gradually approaches a vacuum state). During the contact process, the nitrile rubber sleeve 305 and the nitrile rubber cylinder 306 are squeezed and deformed to achieve an interference fit connection mode. By inserting a T-shaped block 505 between the I-shaped plate 504 and the groove slide rail 501, the resettable length of the restoring force of the spring 503 is shortened, thereby realizing the adjustment of the elastic potential energy. When the T-shaped block 505 is inserted, the I-shaped plate 504 is 04 slides in the direction of the convex slider 502 to insert the T-shaped block 505. The inclined surface makes the bottom of the T-shaped block 505 close to a line, which is easier to insert between the I-shaped plate 505 and the groove slide rail 501. After the nitrile rubber sleeve 305 and the nitrile rubber tube 306 are connected by interference fit, the turn buckle 507 is brought into contact with the limit plate 509 through the rotation between the rotating plate 506 and the convex slider 502 and the rotation between the turn buckle 507 and the rotating plate 506. The turn buckle 507 passes through the limit plate 509 and contacts the limit rod 508 to achieve the buckling of the turn buckle 507. The restoring force of the spring 503 drives the convex slider 502 to move. The elongated lateral distance between the convex slider 502 and the turn buckle 507 makes the turn buckle 507 close to the limit rod 508, so that the reinforcement mechanism 5 is strengthened The connection between the upper shell 101 and the brass sleeve 304 is strengthened, and a downward force is applied to the brass sleeve 304 to reduce the risk of the internal threaded tube 303 reversing and moving upward. The water from the faucet enters the outer shell composed of the upper shell 101 and the lower shell 102 from the water inlet PPR pipe 201, and the water is filtered from the filter element body 202 and then flows out through the water outlet hose 203. The water outlet hose 203 moves with the placement ring 705, and the placement ring 705 rotates with the second connecting rod 704. The second connecting rod 704 rotates with the first connecting rod 702, and the rotational connection method makes the angle between the second connecting rod 702 and the first connecting rod 702 adjustable, and the angle between the second connecting rod 702 and the lower shell 102 adjustable, so as to adjust the water outlet direction of the water outlet hose 203.The damping universal joint 703 is a solid sphere wrapped with silicone rubber, which rotates in a metal hollow sphere with an opening. The solid sphere and the metal hollow sphere are respectively connected to the second connecting rod 704 and the first connecting rod 702. The rotating pair 701 realizes the forward and backward rotation of the first connecting rod 702. The second connecting rod 704 moves with the solid sphere. The second connecting rod 704 is held to drive the solid sphere to rotate flexibly in the metal hollow sphere. After the connection mechanism 3 and the reinforcement mechanism 5 are installed, the hand-held connecting sleeve 601 is moved on the faucet outlet pipe (the connecting sleeve 601 is made of silicone rubber and is fixed on the outlet pipe by deformation and extrusion. The connecting sleeve 601 can be opened to move on the route of the outlet pipe), so that the soft suction cup 602 contacts the silicone rubber pad 603, and the hand-held soft suction cup 601 is held. 02, squeeze the soft suction cup 602 to expel the air between the soft suction cup 602 and the silicone rubber pad 603, so that the soft suction cup 602 is adsorbed on the silicone rubber pad 603 fixed above the upper shell 101, and the connecting mechanism 3 and the reinforcing mechanism 5 are both stored in the soft suction cup 602. When using water, the water that splashes on the connecting mechanism 3 and the reinforcing mechanism 5 is blocked by the soft suction cup 602 to prevent the water flow from accumulating in the connecting mechanism 3 and the reinforcing mechanism 5 to breed bacteria. When the outer surface of the filter element body 202 is blocked by sediment and scale, when the scraper 401 is on the upper inner wall of the upper shell 101, the water inlet PPR pipe is a hard water pipe. At this time, the rebound flap 402 is pushed downward, and the water inlet PPR pipe 201 passes through the scraper 401. Use your fingers to block the bottom of the water outlet hose 203 At the water outlet, turn on the faucet to allow water to remain between the lower shell 102 and the scraper 401. When the water flows full between the scraper 401 and the lower shell 102, turn off the faucet, pull out the sealing plug 104, pull down the handle 406, and the connecting rod 404 moves downward with the handle 406. During the movement of the connecting rod 404, it contacts the rubber ring 405, and the rubber ring 405 ensures the sealing performance. The scraper 401 moves downward with the connecting rod 404. During the process of the scraper 401 moving down to the bottom end of the water inlet PPR pipe 201, the rebound flap 402 loses its limit and drives the sealing layer 403 to be close to the scraper 401 through its own strong spring hinge, so as to prevent the water from overflowing from the round hole to the top of the scraper 401 during the downward movement of the scraper 401, thereby reducing the downward water flow scouring force. During the sliding process of the scraper 401 The scraper 401 is always in contact with the filter element 202. The scraper 401 moves up and down to scrape off the blocked dirt on the surface of the filter element 202, so that the dirt is washed out with the water through the sewage hole exposed after the sealing plug 104 is pulled out. During the upward movement of the scraper 401, when the scraper 401 is located below the water inlet PPR pipe 201 and the rebound flap 402 is closed, the faucet is turned on to fill the space between the scraper 401 and the upper shell 101 with water. The scraper 401 is moved upward to continue cleaning the dirt, so that the dirt is mixed into the water between the scraper 401 and the upper shell 101. When the scraper 401 moves to the sewage outlet 204, the water inlet PPR pipe 204 is in a slightly opened state with respect to the rebound flap 402, and the water with dirt flows out from the sewage outlet 204 to the bottom of the scraper 401, and then rushes out from the sewage hole.The blockage problem can be solved without dismantling the water purification mechanism.

[0057] In summary, by providing a connecting mechanism, a reinforcing mechanism and a descaling mechanism, the sealing of the connection can be improved and the situation where thread wear and reversal causes water leakage can be avoided. Only the sealing plug needs to be removed to clear the blockage and restore the water output.

[0058] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A faucet external water purification mechanism, comprising a housing (1), characterized in that: The outer shell (1) is provided with a connection mechanism (3), and reinforcement mechanisms (5) are symmetrically provided on the left and right sides of the connection mechanism (3); a filter mechanism (2) is provided inside the outer shell (1), and a descaling mechanism (4) is provided on the filter mechanism (2); The connection mechanism (3) comprises a rubber sleeve (301) sleeved on the faucet, an external threaded tube (302) being fixed on the outer wall of the rubber sleeve (301), an internal threaded tube (303) being threadedly connected to the external threaded tube (302), a brass sleeve (304) being integrally formed at the bottom of the internal threaded tube (303), a nitrile rubber sleeve (305) being fixed on the inner wall of the brass sleeve (304), an nitrile rubber tube (306) being interference-fitted on the inner wall of the nitrile rubber sleeve (305), the inner wall of the nitrile rubber sleeve (305) being a truncated cone-shaped structure, the inner diameter of the top end of the inner wall of the nitrile rubber sleeve (305) being the same as the outer diameter of the rubber sleeve (301), and the outer diameter of the bottom end of the inner wall of the nitrile rubber sleeve (305) being the same as the outer diameter of the nitrile rubber tube (306).

2. The faucet external water purification mechanism according to claim 1, characterized in that: The outer shell (1) comprises an upper shell (101), the bottom of the upper shell (101) being threadedly connected to a lower shell (102), a sealing ring (103) being sandwiched between the upper shell (101) and the lower shell (102), and two drainage holes being provided at the bottom of the lower shell (102), both drainage holes being plugged with sealing plugs (104).

3. The faucet external water purification mechanism according to claim 2, characterized in that: The reinforcement mechanism (5) comprises a groove slide rail (501) fixed to the top of the upper shell (101); a convex slider (502) and an I-shaped plate (504) are slidably connected to the inner wall of the groove slide rail (501); a spring (503) is fixed between the convex slider (502) and the I-shaped plate (504); a plurality of T-shaped blocks (505) are inserted between the I-shaped plate (504) and the groove slide rail (501); a connecting rotating plate (506) is rotatably connected to the top of the convex slider (502); a rotating buckle (507) is rotatably connected to the end of the connecting rotating plate (506) away from the convex slider (502); a limiting rod (508) is abutted against the inside of the rotating buckle (507); the limiting rod (508) is fixed to the top of the brass sleeve (304); and a limiting piece (509) identical to the square hole opened at the top of the rotating buckle (507) is integrally formed at the top of the limiting rod (508).

4. The faucet external water purification mechanism according to claim 3, characterized in that: The bottom ends of the left and right sides of the plurality of T-shaped blocks (505) are both inclined surfaces.

5. The faucet external water purification mechanism according to claim 1, characterized in that: The filtering mechanism (2) comprises a water inlet PPR pipe (201) fixed to the bottom end of the inner wall of the nitrile rubber cylinder (306); two sewage outlets (204) are provided at the bottom of the outer wall of the water inlet PPR pipe (201); a filter element body (202) is detachably connected between the upper shell (101) and the lower shell (102); a water outlet hose (203) is fixed to the bottom end of the filter element body (202); and the water inlet PPR pipe (201) is fixedly connected to the upper shell (101).

6. The faucet external water purification mechanism according to claim 5, characterized in that: The descaling mechanism (4) comprises a scraper (401) slidably connected to the filter element body (202); the inner walls of the upper shell (101) and the lower shell (102) are in contact with the scraper (401); a circular hole slidably connected to the outer wall of the water inlet PPR pipe (201) is opened on the scraper (401); a rebound flap (402) is rotatably connected to the bottom of the circular hole; a sealing layer (403) is provided between the rebound flap (402) and the scraper (401); the sealing layer (403) is fixed to the rebound flap (402); a connecting rod (404) penetrating the bottom of the lower shell (102) is fixed to the bottom of the scraper (401); a handle (406) is fixed to the bottom of the connecting rod (404); and a rubber ring (405) fixedly connected to the lower shell (102) is provided between the connecting rod (404) and the lower shell (102).

7. The faucet external water purification mechanism according to claim 6, characterized in that: The scraper (401) and the connecting rod (404) are both made of brass.

8. The faucet external water purification mechanism according to claim 5, characterized in that: The water outlet hose (203) is provided with a steering mechanism (7), the steering mechanism (7) comprising a first connecting rod (702) rotatably connected to the bottom of the lower shell (102), one end of the first connecting rod (702) away from the lower shell (102) is rotatably connected to a second connecting rod (704), one end of the second connecting rod (704) away from the first connecting rod (702) is fixed with a placement ring (705), and the water outlet hose (203) is in contact with the inner wall of the placement ring (705).

9. The faucet external water purification mechanism according to claim 8, characterized in that: The lower housing (102) and the first connecting rod (702) are rotationally connected via a rotating pair (701), and the first connecting rod (702) and the second connecting rod (704) are rotationally connected via a damping universal joint (703).

10. The faucet external water purification mechanism according to claim 3, characterized in that: A water retaining mechanism (6) is arranged at the top of the upper shell (101); the connecting mechanism (3) and the two reinforcing mechanisms (5) are arranged inside the water retaining mechanism (6); the water retaining mechanism (6) comprises a connecting sleeve (601) sleeved on the faucet at a position above the rubber sleeve (301); a soft suction cup (602) is integrally formed at the bottom of the connecting sleeve (601); and the bottom of the soft suction cup (602) contacts a silicone rubber pad (603) fixed to the top of the upper shell (101).

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