A coffee machine filter

Abstract

The present invention provides a coffee machine filter element, characterized in that it includes an upper cover, a body, a filter cloth, a water outlet grate, a water outlet pipe, activated carbon, resin, a sealing ring, a sealing valve, and a time recording disk. The upper side of the body is provided with an upper cover, and a time recording disk is installed on the upper side of the upper cover. The time disk is engraved with a time mark and a protrusion, and the protrusion corresponds to the time mark. A pressure cover is installed on the upper side of the time recording disk, and a notch is provided on the pressure cover. The present invention adopts a four-stage filtration, the primary activated carbon adsorbs chlorine and other particulate impurities in water, the secondary uses exchange resin to reduce water hardness, and the tertiary filtration uses the gap of the water outlet grate to intercept bulk filter material to prevent the filter material from clogging the filter cloth. The fourth-stage filter cloth intercepts small granular filter material and ash, and outputs clean water through the water outlet pipe connected to the body.

Description

Technical Field

[0001] The invention relates to the field of filtration, and in particular to a coffee machine filter element. Background Art

[0002] At present, the coffee machine filter uses PP or PE sintered filter as the final filter at the outlet of the coffee machine filter. The filter material inside the filter is resin and activated carbon. Due to the instability of the porosity of the PP / PE filter, the filter will be black water, or the flow rate is small and no water will flow out. When the precision of the PP or PE sintered filter is too high, the carbon ash in the activated carbon is intercepted by the sintered PP / PE filter, and the activated carbon blocks the gap of the PP / PE filter, causing the filter to not flow out or the flow rate to decrease. When the precision of the PP or PE sintered filter is too low, the carbon ash in the activated carbon cannot be intercepted by the PP / PE filter, and the activated carbon ash passes through the gap of the filter, causing the filter to be black water. When the precision of the PP or PE sintered filter is too low, the exhaust time is too long, which solves the problem of too long exhaust of the filter. This patent is different from our company's ZL201520198468.6 and has made new creations. Summary of the invention

[0003] According to the above technical problems, the present invention provides a coffee machine filter element, which is characterized by comprising an upper cover, a body, a filter cloth, a water outlet grate, a water outlet pipe, activated carbon, a resin, a sealing ring, a sealing valve, and a time recording disk. The upper side of the body is provided with an upper cover, and a time recording disk is installed on the upper side of the upper cover. The time disk is engraved with time marks and protrusions, and the protrusions correspond to the time marks. A pressure cover is installed on the upper side of the time recording disk, and a notch is provided on the pressure cover. The notch is a time scale range, and an annular convex stop is provided on the upper side of the body. The convex stopper is matched and connected with the concave stopper on the upper cover, and through ultrasonic welding, the body and the upper cover form a sealed whole. A sealing valve is provided on the upper side of the upper cover, and a water outlet grate is provided on the lower side of the upper cover. The water outlet grate is installed on the upper side of the body. The conical cavity formed on the top of the inner cavity of the body is combined with the side support feet of the water outlet grate, so that the water outlet grate clamps the filter element cavity. A filter cloth is fixed on the upper side of the water outlet grate. There is an annular grille in the middle of the water outlet grate. The annular grille, the body and the upper cover form an open post-filter cavity;

[0004] A water outlet is provided at the lower side of the water outlet grate, the water outlet is connected to the water outlet pipe, the water outlet pipe is installed at the inner side of the body, a pre-filter cavity is formed between the water outlet pipe and the body, activated carbon and resin are contained in the pre-filter cavity, a water inlet and a water outlet are provided at the lower side of the body, the water outlet is connected to the water outlet pipe, the water inlet is connected to the pre-filter cavity, the water inlet is a grid structure, a ring protrusion is provided at the lower side of the body, the ring protrusion is connected to the groove on the sealing ring, a sealing valve is provided at the upper side of the upper cover, a boss is provided at the bottom of the body, the outer contour of the boss is connected to the water outlet pipe, there is a through hole from the top center of the boss to the bottom center of the body, and this through hole is used for the passage of water filtered by the filter element;

[0005] The water outlet grate is provided with a boss at the bottom, and a through hole is provided from the center of the boss to the inside of the water outlet grate. The through hole at the bottom is connected to the outside of the water outlet pipe around a circle. The upper outer edge of the water outlet grate is provided with reinforcing ribs. The supporting feet formed by the reinforcing ribs are combined with the conical cavity formed by the inner cavity of the main body, so that the water outlet grate clamps the filter element cavity. The water outlet grate is provided with an annular grille in the middle, and the annular grille, the main body and the upper cover form an open post-filtration cavity. The gap of the annular grille in the middle of the water outlet grate is used to connect the post-filtration cavity and the pre-filtration cavity.

[0006] A welding wire is provided in the middle of the water outlet grate, and the welding wire is welded to the filter cloth. A reinforcing rib is provided in the middle of the water outlet grate, and the reinforcing rib is in contact with the filter cloth.

[0007] The water outlet pipe is a pipe-mounted structure, the outer edge of one end of the water outlet pipe is connected to the inner edge of the through hole of the bottom boss of the water outlet grate, and the inner hole of the other end of the water outlet pipe is connected to the outer edge of the bottom boss of the main body. The inner cavity of the water outlet pipe is respectively connected to the pipeline formed by the inner edge of the through hole of the water outlet grate and the inner hole of the main body boss, which is used for the outflow of filtered water.

[0008] The present invention adopts a four-stage filtration, in which the primary activated carbon absorbs chlorine and other particulate impurities in the water, the secondary uses exchange resin to reduce water hardness, and the tertiary filtration uses the gaps in the outlet grate to intercept bulk filter material to prevent the filter material from clogging the filter cloth. The fourth-stage filter cloth intercepts small granular filter material and ash, and outputs purified water through a water outlet pipe connected to the body. The activated carbon and resin of the present invention are placed in the pre-filter cavity, and the pre-filter cavity is located on the lower side of the post-filter cavity, and a water outlet grate is provided to serve as a blocking effect. Due to gravity problems, the activated carbon and resin move downward, and the water outlet grate and filter cloth will not be blocked, thereby solving the problem that the PP / PE filter element does not discharge water or has a small flow rate as the terminal filter element of the coffee machine filter element. The present invention adds a filter cloth, the filter holes arranged on the filter cloth are evenly distributed, and a water outlet grate is added, so that large particles of impurities can be filtered during filtering, and the filter cloth can intercept small particles of impurities after filtering, thereby solving the problem that the PP / PE filter element does not produce water or has a small flow rate when used as the terminal filter element of the coffee machine filter element, and also solving the problem that the PP / PE filter element has too much black water when used as the terminal filter element of the coffee machine filter element.

[0009] The present invention uses self-wetting to remove air from the filter element. When the filter element is installed, the sealing valve is opened, the interior of the filter element is connected to the atmosphere, and water at atmospheric pressure enters the filter element through the water inlet until the liquid level inside the filter element and the liquid level in the water tank are in the same plane. The sealing valve is closed to make the filter element a sealed container, and the interior of the filter element is isolated from the external atmosphere, which reduces the air inside the filter element and reduces the exhaust time of the filter element.

[0010] A grid is provided at the water inlet at the bottom of the body to prevent water from entering the filter element before filtration and to prevent resin and activated carbon from overflowing. The outer edge of the filter cloth of the present invention is combined with the welding line in the middle of the water outlet grate and welded to form a whole with the welding line of the water outlet grate, which is used to intercept small granular filter materials. The middle position of the filter cloth fits with the reinforcing rib in the middle of the water outlet grate, and the reinforcing rib is used to support the filter cloth to prevent the filter cloth from being deformed by water flow pressure.

[0011] The pre-filter chamber of the present invention contains activated carbon and resin, the activated carbon is used to filter residual chlorine and other particulate impurities in water, and the resin is used to reduce the hardness of water. A time recording disk is installed on the upper side of the main body cover to indicate the installation time, and the user can be reminded to replace the filter element on time according to the installation time.

[0012] The sealing ring of the present invention is structurally adjusted according to different filter elements when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0014] Figure 2 This is a cross-sectional view of the upper cover and the body of the present invention when connected.

[0015] Figure 3 It is a cross-sectional view of the lower side of the main body of the present invention.

[0016] Figure 4 It is a schematic diagram of the sealing ring structure of the present invention.

[0017] Figure 5 It is a schematic diagram of the sealing ring structure of the present invention.

[0018] Figure 6 It is a schematic diagram of the structure of the time recording disk of the present invention.

[0019] Figure 7 It is a schematic diagram of the gland structure of the present invention.

[0020] Figure 8 It is a schematic diagram of water inlet of the present invention.

[0021] As shown in the figure, upper cover-1, main body-2, filter cloth-3, water outlet grate-4, water outlet pipe-5, water outlet-6, sealing ring-7, sealing valve-8, time recording disk-9, pressure cover-10, reinforcing rib-11, water inlet-12. DETAILED DESCRIPTION

[0022] According to the figure, the present invention is further described:

[0023] Example 1

[0024] The present invention provides a coffee machine filter element, which is characterized by comprising an upper cover 1, a body 2, a filter cloth 3, a water outlet grate 4, a water outlet pipe 5, activated carbon, resin, a sealing ring 7, and a sealing valve 8. The upper side of the body 2 is provided with an upper cover 1, and a time recording disk 9 is installed on the upper side of the upper cover 1. The time disk is engraved with a time mark and a protrusion, and the protrusion corresponds to the time mark. A pressure cover 10 is installed on the upper side of the time recording disk 9, and a notch is provided on the pressure cover 10. The notch is a time scale range. The upper side of the body 2 is provided with an annular convex stopper, and the convex stopper is connected to the upper The concave stop on the cover 1 is matched and connected, and through ultrasonic welding, the body 2 and the upper cover 1 form a sealed whole. The upper side of the upper cover 1 is provided with a sealing valve 8, and the lower side of the upper cover 1 is provided with a water outlet grate 4, and the water outlet grate 4 is installed on the upper side of the body 2. The conical cavity formed on the top of the inner cavity of the body 2 is combined with the side support feet of the water outlet grate 4 at the water outlet 6, so that the water outlet grate 4 clamps the filter element cavity. The filter cloth 3 is fixed on the upper side of the water outlet grate 4, and the middle part of the water outlet grate 4 is provided with an annular grille. The annular grille, the body 2, and the upper cover 1 form an open post-filter cavity.

[0025] A water outlet 6 is provided at the lower side of the water outlet grate 4, and the water outlet 6 is connected to the water outlet pipe 5, and the water outlet pipe 5 is installed at the inner side of the body 2, and a pre-filter cavity is formed between the water outlet pipe 5 and the body 2, and activated carbon and resin are contained in the pre-filter cavity. A water inlet 12 and a water outlet 6 are provided at the lower side of the body 2, and the water outlet 6 is connected to the water outlet pipe 5, and the water inlet 12 is connected to the pre-filter cavity, and the water inlet 12 is a grid structure, and a ring protrusion is provided at the lower side of the body 2, and the ring protrusion is connected to the groove on the sealing ring 7, and a boss is provided at the bottom of the body 2, and the outer contour of the boss is connected to the water outlet pipe 5, and there is a through hole from the top center of the boss to the bottom center of the body 2, and this through hole is used for the passage of water filtered by the filter element;

[0026] The water outlet grate 4 has a boss at the bottom, and there is a through hole from the center of the boss to the inside of the water outlet grate 4. The bottom through hole is connected to the outside of the water outlet 6 pipe. The upper outer edge of the water outlet grate 4 has a reinforcing rib 11. The support foot formed by the reinforcing rib 11 is combined with the conical cavity formed by the inner cavity of the body 2, so that the water outlet grate 4 clamps the filter element cavity. The water outlet grate 4 has an annular grille in the middle, and the annular grille forms an open post-filter cavity with the body 2 and the upper cover 1. The gap of the annular grille in the middle of the water outlet grate 4 is used to connect the post-filter cavity and the pre-filter cavity. The water outlet grate 4 has a welding wire in the middle, and the welding wire is welded to the filter cloth 3. The water outlet grate 4 has a reinforcing rib 11 in the middle, and the reinforcing rib 11 is in contact with the filter cloth 3. The water outlet pipe 5 is a pipe-mounted structure, the outer edge of one end of the water outlet pipe 5 is connected to the inner edge of the through hole of the bottom boss of the water outlet grate 4, and the inner hole of the other end of the water outlet pipe 5 is connected to the outer edge of the bottom boss of the main body 2. The inner cavity of the water outlet pipe 5 is respectively connected to the pipeline formed by the inner edge of the through hole of the water outlet grate 4 and the inner hole of the boss of the main body 2, which is used for the outflow of filtered water.

[0027] Example 2

[0028] When in use, the sealing valve 8 is opened when the filter element is loaded, the interior of the filter element is connected to the atmosphere, and water under atmospheric pressure enters the filter element's pre-filter cavity through the water inlet 12 on the lower side of the body 2, and the activated carbon and resin in the pre-filter cavity filter it until the internal liquid level in the filter element's pre-filter cavity is in the same plane as the water tank liquid level, and the sealing valve 8 is closed, so that the filter element becomes a sealed container, and the interior of the filter element is isolated from the external atmosphere, which reduces the air inside the filter element and reduces the exhaust time of the filter element. Due to the external atmospheric pressure, the liquid passes through the pre-filter cavity and contacts the water outlet grate 4 and enters the post-filter cavity through the water outlet grate 4. After entering the post-filter cavity, it passes through the filter cloth 3 and enters the water outlet pipe 5 through the water outlet 6, and the water outlet pipe 5 derives the purified water. When in use, the time recording disk 9 is now hung and screwed to the filter element installation time, which is convenient for users to record time. After the filter element has been used for a period of time, the user is likely to forget the use time, but the time recording disk 9 can clearly remind the user to avoid forgetting the use time and then forgetting to replace the filter element, and the filter element is used for too long, resulting in poor filtering effect.

[0029] The above description is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the scope of protection of the present invention.

Claims

1. A coffee machine filter element, characterized in that It includes an upper cover, a body, a filter cloth, a water outlet grate, a water outlet pipe, activated carbon, resin, a sealing ring, a sealing valve, and a time recording disk. The upper side of the body is provided with an upper cover, and the upper side of the upper cover is installed with a time recording disk. The time disk is engraved with a time mark and a protrusion, and the protrusion corresponds to the time mark. The upper side of the time recording disk is installed with a pressure cover, and the pressure cover is provided with a notch, and the notch is a time scale range. The upper side of the body is provided with an annular convex stopper, and the convex stopper is connected with the concave stopper on the upper cover. The body and the upper cover are connected by matching and ultrasonic welding to form a sealed whole. A sealing valve is provided on the upper side of the upper cover, and a water outlet grate is provided on the lower side of the upper cover. The water outlet grate is installed on the upper side of the body. The conical cavity formed on the top of the inner cavity of the body is combined with the side support feet of the water outlet grate at the water outlet, so that the water outlet grate clamps the filter element cavity. A filter cloth is fixed on the upper side of the water outlet grate. An annular grille is provided in the middle of the water outlet grate. The annular grille, the body and the upper cover form an open post-filtration cavity. A water outlet is provided at the lower side of the water outlet grate, the water outlet is connected to the water outlet pipe, the water outlet pipe is installed at the inner side of the body, a pre-filter cavity is formed between the water outlet pipe and the body, activated carbon and resin are contained in the pre-filter cavity, a water inlet is provided at the lower side of the body, the water inlet is connected to the pre-filter cavity, the water inlet is a grid structure, a ring protrusion is provided at the lower side of the body, the ring protrusion is connected to the groove on the sealing ring, a sealing valve is provided at the upper side of the upper cover, a boss is provided at the bottom of the body, the outer contour of the boss is connected to the water outlet pipe, a through hole is provided from the center of the top of the boss to the center of the bottom of the body, and the through hole is used for the passage of water filtered by the filter element; The water outlet grate has a boss at the bottom, and a through hole from the center of the boss to the inside of the water outlet grate. The bottom through hole is connected to the outside of the water outlet pipe around a circle. The upper outer edge of the water outlet grate has reinforcing ribs, and the legs formed by the reinforcing ribs are combined with the conical cavity formed by the inner cavity of the body, so that the water outlet grate clamps the filter element cavity. The water outlet grate has an annular grille in the middle, and the annular grille, the body, and the upper cover form an open post-filter cavity. The gap of the annular grille in the middle of the water outlet grate is used to connect the post-filter cavity and the pre-filter cavity. A welding wire is provided in the middle of the water outlet grate, and the welding wire is welded to the filter cloth. A reinforcing rib is provided in the middle of the water outlet grate, and the reinforcing rib is in contact with the filter cloth. The water outlet pipe is a pipe-mounted structure, the outer edge of one end of the water outlet pipe is connected to the inner edge of the through hole of the bottom boss of the water outlet grate, and the inner hole of the other end of the water outlet pipe is connected to the outer edge of the bottom boss of the main body. The inner cavity of the water outlet pipe is respectively connected to the inner edge of the through hole of the water outlet grate and the inner hole of the main body boss to form a pipeline for the outflow of filtered water.

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