Pre-filter and toilet

Abstract

The embodiment of the utility model provides a pre-filter and a toilet. The pre-filter includes: a filter body is provided with a water inlet and a filtered water outlet; a receiving space is formed inside the shell, and a water inlet channel and a first water outlet channel are also provided; a positioning protrusion is provided on the inner wall surface of the shell; a positioning groove is provided on the outer surface of the filter body; and a hollow fastener is provided in the first water outlet channel. When the filter body is inserted into the receiving space inside the shell along the axial direction, the positioning protrusion cooperates with the positioning groove to limit the relative movement of the filter body and the shell in the axial direction; when the filter body rotates relative to the shell around the axial direction until the filtered water outlet is aligned with the first water outlet channel, at least a part of the fastener is inserted into the filtered water outlet to limit the relative rotation of the filter body and the shell in the axial direction. The fastener can ensure the alignment between the filtered water outlet and the first water outlet channel to avoid affecting the outlet water pressure and the outlet water flow.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a pre-filter and a toilet. Background Art

[0002] In the current bathroom market, smart toilets are being widely promoted and used, so they have a large number of users. Although smart toilets bring a lot of convenience and comfort to people's lives, since the toilet cleans the private parts of the user, the water quality requirements are relatively high. The water used by smart toilets is directly derived from the water company. Therefore, the water connected to the smart toilet will produce various debris after being transported through a long-distance pipeline. Users cannot use the smart toilet completely and safely; therefore, in the use of smart toilets, a pre-filter is usually set between the main water inlet pipe and the smart toilet to remove the debris contained in the water flow in the main water inlet pipe, so that users can use the smart toilet more safely and safely.

[0003] The existing pre-filter generally consists of a housing and a filter body, which cooperate with each other and are equipped with corresponding water inlet and outlet interfaces. Usually, screws and other fasteners are used at the bottom of the filter body to assemble and fix the housing and the body together.

[0004] However, such a pre-filter has many defects. On the one hand, the filter body and the shell will rotate relative to each other, resulting in the inability of the filtered water outlet on the filter body to accurately align with the corresponding water outlet channel on the shell, thereby reducing the outlet pressure and flow rate of the clean water after filtration. On the other hand, since the filter body needs to be soaked in water for a long time, only fasteners made of stainless steel and other materials can be used, and the height of the filter body is much greater than the height of fasteners such as screws, and is limited by the internal space of the pre-filter, which causes great difficulties in the assembly and screwing of fasteners such as screws, greatly affecting production efficiency. Utility Model Content

[0005] The utility model provides a pre-filter and a toilet, aiming to solve at least a part of the defects of the existing pre-filter.

[0006] In the first aspect, the utility model provides a pre-filter. The pre-filter comprises: a filter body; a water inlet and a filtered water outlet interconnected with the water inlet are arranged on the filter body; a housing; a receiving space is formed inside the housing; the filter body is received in the receiving space; the housing is also provided with a water inlet channel and a first water outlet channel penetrating the housing; a positioning protrusion; the positioning protrusion is arranged on the inner wall surface of the housing; a positioning groove; the positioning groove is arranged on the outer surface of the filter body; a hollow fastener; the fastener is arranged in the first water outlet channel; wherein, when the filter body is inserted into the receiving space inside the housing along the axial direction, the positioning protrusion cooperates with the positioning groove to limit the relative movement of the filter body and the housing in the axial direction; when the filter body rotates relative to the housing around the axial direction until the filtered water outlet is aligned with the first water outlet channel, at least a part of the fastener is inserted into the filtered water outlet to limit the relative rotation of the filter body and the housing in the axial direction.

[0007] In some embodiments, the fastener includes: a hollow fastener body; the outer surface of the fastener body is provided with threads and is threadedly connected to the shell; a hollow fixing portion; the fixing portion extends from one end of the fastener body along the axial direction of the fastener and is inserted into the filtered water outlet; an installation end; the installation end is formed at the other end of the fastener body and is located in the first water outlet channel.

[0008] In some embodiments, the mounting end is provided with one or more mating interfaces adapted to an external tool so that the rotational torque of the external tool is applied to the fastener; the mating interface includes: a hexagonal protrusion and a screwdriver slot.

[0009] In some embodiments, two or more positioning protrusions and positioning grooves are provided; wherein, the two or more positioning protrusions are arranged along the circumference of the inner wall surface of the shell, and the arc distance between two adjacent positioning protrusions is equal.

[0010] In some embodiments, the positioning groove extends circumferentially along the outer surface of the filter body, and has a first groove end and a second groove end that are far away from each other in the circumferential direction; wherein the first groove end is an open end so that the positioning protrusion enters the positioning groove; and the second groove end is a closed end, which abuts against the positioning protrusion when the filter body is rotated relative to the shell around the axial direction until the filtered water outlet is aligned with the first water outlet channel.

[0011] In some embodiments, the shell is also provided with a second water outlet channel running through the shell; wherein the water inlet is arranged on one of the end faces of the filter body; the filtered water outlet is arranged on the side wall of the filter; the water inlet channel is opened on one of the end faces of the shell; the first water outlet channel and the second water outlet channel are opened on the side wall of the shell.

[0012] In some embodiments, the filter body and the shell are both cylindrical; the outer surface of the shell is also provided with: a water inlet joint, a first water outlet joint and a second water outlet joint; wherein the water inlet channel extends to the water inlet joint; the first water outlet channel extends to the first water outlet joint; and the second water outlet channel extends to the second water outlet joint.

[0013] In some embodiments, the filter further comprises: a sealing component; wherein the sealing component is disposed between the outer surface of the filter body and the inner wall surface of the housing, so that the gap between the filter body and the housing is filled.

[0014] In some embodiments, the outer surface of the filter body is provided with a plurality of sealing grooves along the circumferential direction; the sealing component comprises: a plurality of sealing rings; wherein one of the sealing rings is clamped in one of the sealing grooves to fill the gap between the outer surface of the filter body and the inner surface of the shell.

[0015] In a second aspect, the utility model provides a toilet, which comprises a toilet body and the above-mentioned pre-filter, wherein the pre-filter is used to provide filtered clean water to the toilet body through a first water outlet channel.

[0016] At least one beneficial effect of the pre-filter and toilet provided by the embodiment of the utility model is that: on the basis of the mutually matched positioning protrusions and positioning grooves, an additional fastener is combined to realize a relatively fixed fastening method between the filter body and the housing, which can ensure the alignment between the filtered water outlet and the first water outlet channel, avoiding affecting the water outlet pressure and water outlet flow. Moreover, such a fastening method can conveniently complete the assembly by applying torque through the fastener, thereby effectively improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent the same elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0018] Figure 1 An exploded view of the structure of the pre-filter provided in the embodiment of the utility model;

[0019] Figure 2 A front view of a pre-filter provided in an embodiment of the utility model;

[0020] Figure 3 Yes Figure 2 A cross-sectional view of the pre-filter along the AA direction shown;

[0021] Figure 4 A front cross-sectional view of a housing provided in an embodiment of the utility model;

[0022] Figure 5 A schematic diagram of a fastener provided in an embodiment of the utility model.

[0023] Reference numerals: 100, pre-filter; 1, filter body; 11, water inlet pipe; 12, water outlet pipe; 101, filter tank; 111, water inlet; 112, filtered water inlet; 113, water inlet chamber; 114, sealing tank; 121, filtered water outlet; 122, water outlet chamber; 1011, closed end; 1012, open end; 2, housing; 21, water inlet joint; 22, first water outlet joint; 23, second water outlet joint; 201, receiving space 202, first end; 203, second end; 204, first external thread; 211, water inlet channel; 221, first water outlet channel; 222, first internal thread; 231, second water outlet channel; 3, fixing component; 31, positioning groove; 32, positioning protrusion; 33, fastener; 331, fixing part; 332, fastener body; 333, installation end; 311, limiting end; 312, notch end; 4, sealing component; 41, sealing ring. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with specific embodiments. It should be emphasized that the following description is merely illustrative and is not intended to limit the scope and application of the present invention.

[0025] It should be noted that, unless otherwise clearly specified and limited, the terms "protruding from", "circumferential", "axial direction", "close to", "far away from", "towards", "through", "mutually divergent", "through", "radial", etc. used in this specification to indicate the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms such as "installation", "fitting", "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; "fixation" can be bolt fixation, snap fixation or glue fixation; the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated; thus, the features specified as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" or "several" means two or more; in addition, "and / or" includes any and all combinations of one or more related listed items; for ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In this embodiment, the specific shape, structure and size of the "pre-filter" are not limited, and those skilled in the art can selectively use any suitable type of pre-filter according to actual needs. Figure 4 Only one of a pair of locating projections is shown.

[0028] Figure 1 This is a structural exploded view of the pre-filter provided in an embodiment of the utility model. Figure 2 A front view of a pre-filter provided in an embodiment of the utility model. Figure 3 Yes Figure 2 The cross-sectional view of the pre-filter along the AA direction is shown.

[0029] See also Figure 1 to Figure 3 The pre-filter 100 includes: a filter body 1 , a shell 2 and a fixing component 3 .

[0030] The filter body 1 is a main component for realizing the filtering function, and is provided with a water inlet 111 and a filtered water outlet 121 interconnected with the water inlet 111. Unfiltered water can enter through the water inlet 111, and flow out through the filtered water outlet 121 after being filtered.

[0031] The housing 2 has a receiving space 201 formed inside for receiving the filter body 1. The filter body 1 can be inserted into the receiving space 201 along the axial direction. The water inlet 111 of the filter body 1 and the receiving space 201 are in communication with each other.

[0032] The housing 2 is also provided with a water inlet channel 211 and a first water outlet channel 221 that penetrate the housing 2. Thus, external water can enter the receiving space 201 through the water inlet channel 211, and then enter the filter body 1 through the water inlet 111 for filtration. The filtered clean water can then flow out of the housing 2 through the filtered water outlet 121 and the first water outlet channel 221 in sequence for subsequent use.

[0033] Specifically, an additional second water outlet channel 231 may be provided on the housing 2. The second water outlet channel 231 also penetrates the housing 2 and is connected to the water inlet channel 211 through the receiving space 201. Thus, independent filtered water outlets and non-filtered water outlets are formed on the housing 2 to meet the use requirements in different situations.

[0034] In some embodiments, please refer to Figure 1 The outer surface of the housing 2 may also be provided with a water inlet connector 21, a first water outlet connector 22 and a second water outlet connector 23, which correspond to the water inlet channel 211, the first water outlet channel 221 and the second water outlet channel 231, respectively. By providing an additional connector, it is convenient to establish a connection between the pre-filter and the external pipeline. For example, the "connector" shown in the drawings of the specification is in the form of a threaded connector. However, any other suitable type of connector may be selected according to the actual needs, and is not limited to the connector shown in the drawings of the specification.

[0035] The fixing component 3 is a general term for a structural component used to achieve a fixed connection between the filter body 1 and the housing 2. Figure 1 to Figure 4 As shown, the fixing component 3 may include the following two main parts:

[0036] 1) A positioning groove 31 and a positioning protrusion 32 cooperate with each other to limit the relative movement between the filter body 1 and the housing 2 in the axial direction.

[0037] 2) A fastener 33 at least partially inserted into the filtered water outlet 121 to limit the relative rotation of the filter body 1 and the housing 2 in the axial direction.

[0038] The positioning groove 31 is arranged on the outer surface of the filter body 1 and is located at the circumferential edge of the filter body 1. The positioning protrusion 32 is arranged on the housing 2 and protrudes from the inner wall surface of the housing 2.

[0039] As the filter body 1 is inserted into the receiving space inside the shell 2 along the axial direction, the positioning protrusion 32 will enter the positioning groove 31 and be partially or completely surrounded by the positioning groove 31, thereby limiting the relative movement of the filter body 1 and the shell 2 in the axial direction.

[0040] The fastener 33 is a hollow component with a certain axial length. It is arranged in the first water outlet channel, and can be at least partially inserted into the filtered water outlet 121 by one or more methods such as screwing or squeezing when the filtered water outlet 121 is aligned with the first water outlet channel 221, thereby forming a pin-like structure to limit the relative rotation of the filter body and the housing in the axial direction.

[0041] In addition, the hollow setting of the fastener 33 can provide a complete clean water outflow channel, and the outlet pressure and water flow rate of the filtered clean water can be ensured by designing a suitable inner diameter of the fastener 33.

[0042] Specifically, the fastener 33 may be made of copper material, or may be a hardware piece made of other metal materials, or may be a plastic piece made of plastic material.

[0043] In some embodiments, Figure 5 As shown, the fastener 33 may include: a hollow fixing portion 331 , a hollow fastener body 332 , and a mounting end portion 333 .

[0044] The outer surface of the fastener body 332 is provided with threads, which are threadedly connected to the housing. The fixing portion 331 is a portion extending from one end of the fastener body 331 along the axial direction of the fastener. The installation end portion 333 is a portion formed at the other end of the fastener body 331 and located in the first water outlet channel.

[0045] In the actual assembly process, an external tool (e.g., a screwdriver, an Allen wrench, etc.) is inserted into the first water outlet channel 221 and engaged with the mounting end 333. Then, the external tool applies torque to tighten the fastener 33, so that it moves toward the receiving space, and a part of the fixing portion 331 is inserted into the filtered water outlet 121.

[0046] Preferably, the mounting end 333 may be provided with one or more mating interfaces adapted to external tools, so that the rotational torque of the external tool is applied to the fastener to move it toward the receiving space. The mating interface includes: a hexagonal protrusion and a screwdriver notch to be compatible with the use of a screwdriver and an Allen wrench.

[0047] In some embodiments, see Figure 1 and Figure 3 The positioning groove 31 extending in the circumferential direction has a first groove end and a second groove end that are far away from each other. The first groove end is a limiting end 311 , and the second groove end is a notch end 312 .

[0048] In the actual assembly process, as the filter body 1 is inserted, the positioning protrusion 32 can enter the positioning groove 31 through the notch end 312. Further, when the filter body 1 is rotated relative to the housing 2 around the axis until the filtered water outlet 121 is aligned with the first water outlet channel 221, the positioning protrusion 32 will abut against the limit end 311, playing the role of limiting reminder, indicating that the filter body 1 has been rotated into place.

[0049] Preferably, two or more positioning protrusions 32 and positioning grooves 31 may be provided. For example, two are provided as an example for illustration in the drawings of the specification.

[0050] Two or more positioning protrusions 32 are arranged along the circumference of the inner wall of the housing 2 , and the arcs of the intervals between two adjacent positioning protrusions 32 are equal. Two or more positioning grooves 31 are also correspondingly arranged on the outer surface of the filter body 1 .

[0051] By providing two or more positioning protrusions 32 and positioning grooves 31 , a multi-directional force effect can be achieved to ensure a stable connection between the housing 2 and the filter body 1 .

[0052] In some embodiments, the pre-filter may further include an additional sealing component 4. The sealing component 4 is disposed between the housing 2 and the filter body 1, and may fill the gap between the inner surface of the housing 2 and the outer surface of the filter body 1, thereby achieving a good sealing effect.

[0053] Specifically, Figure 1 to Figure 3 As shown, a plurality of sealing grooves 114 are provided on the outer surface of the filter body 1. The sealing component 4 includes: a plurality of sealing rings 41. One sealing ring 41 is arranged in one sealing groove 114 to fill the gap between the outer surface of the filter body 1 and the inner surface of the housing 2.

[0054] In some embodiments, Figure 1 to Figure 3 As shown, the filter body 1 and the housing 2 may both be substantially cylindrical in shape and extend to a certain length along the axial direction.

[0055] The housing 2 has a first end 202 and a second end 203 that are opposite to each other in the axial direction. The water inlet connector 21 protrudes from the first end 202 of the housing 2, and the water outlet connector protrudes from the outer surface of the housing 2; the filter body 1 enters the receiving space 201 from the second end 203 of the housing 2.

[0056] In some embodiments, Figure 1 to Figure 3 As shown, a filter tank 101 is formed inside the filter body 1. The filter tank 101 has a closed end 1011 and an open end 1012 which are separated from each other in the axial direction; an inlet pipe 11 and an outlet pipe 12 are arranged in the filter tank 101 and both protrude from the closed end 1011 of the filter tank 101.

[0057] The water inlet 111 is arranged at one end of the water inlet pipe 11 close to the closed end 1011; a filtered water inlet 112 is arranged at the end of the water inlet pipe 11 away from the closed end 1011; a water inlet cavity 113 is provided inside the water inlet pipe 11 and is interconnected with the water inlet 111 and the filtered water inlet 112; a water outlet cavity 122 is provided inside the water outlet pipe 12 and is interconnected with the filtered water outlet 121; an end of the water outlet cavity 122 away from the closed end 1011 is interconnected with the filter tank 101.

[0058] In the actual assembly process, the fastener 33 is received in the first water outlet channel 221 of the housing 2, and is slightly lower than the end surface of the first water outlet channel 221 of the housing 2. The filter body 1 and the housing 2 are first matched in a screw-on manner through the positioning protrusion 32 and the positioning groove 31. As the filter body 1 is inserted, one side of the positioning protrusion 32 enters from the open end 312 of the positioning groove 31, and as the filter body 1 rotates, it abuts against the limit end 311 of the positioning groove 31.

[0059] When the positioning protrusion 32 abuts against the limiting end 311 of the positioning groove 31, the filtered water outlet 121 will be in a position aligned with the first water outlet channel 221. At this time, an external tool such as a screwdriver can be used to screw the fastener 33 from the first water outlet channel 221 of the housing 2 until the first internal thread 222 and the external thread of the fastener body 332 are fully matched. In this way, the fastener 33 extends into the filtered water outlet 121 of the filter body 1, limiting the relative rotation between the filter body 1 and the housing 2.

[0060] Based on the pre-filter provided in the above embodiment, a toilet using the pre-filter is further provided. The toilet comprises: a toilet body and the pre-filter 100 described above.

[0061] Among them, the toilet body is provided with a first connecting part and / or a second connecting part; the first connecting part and the second connecting part are both provided with a second internal thread that is compatible with the first external thread 204 of the water inlet connector 21 of the pre-filter 100.

[0062] In addition, the first water outlet connector 22 of the pre-filter 100 is connected to the first connection portion of the toilet body, and / or the second water outlet connector 23 of the pre-filter 100 is connected to the second connection portion of the toilet body, so that the toilet body and the pre-filter 100 are connected to each other.

[0063] Since the water flowing through the second water outlet channel 231 is not filtered, the second water outlet channel 231 can also be connected to a toilet for flushing the toilet. The second water outlet channel 231 can also be connected to other drainage points for cleaning the interior of the pre-filter 100 while using filtered water to prevent the accumulation of various debris from clogging the pre-filter 100.

[0064] In summary, the pre-filter and toilet provided in the embodiment of the utility model can effectively make the filtered water outlet on the filter body completely consistent with the direction of the first water outlet channel on the shell by adding the design of the fixing component, so as not to affect the water outlet pressure and water outlet flow. In addition, at least a part of the fixing component is installed from the first water outlet channel of the shell, and its height is slightly lower than the end face of the first water outlet channel of the shell, so that it is easy to use a screwdriver or an Allen wrench to assemble at least a part of the fixing component, which can effectively improve production efficiency. Therefore, the pre-filter and toilet provided in the embodiment of the utility model have certain novelties compared with traditional pre-filters and toilets.

[0065] The above contents are further detailed descriptions of the present invention in combination with specific / preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

Claims

1. A pre-filter, characterized in that: include: filter body; The filter body is provided with a water inlet and a filtered water outlet interconnected with the water inlet; A housing; a receiving space is formed inside the housing; the filter body is received in the receiving space; the housing is further provided with a water inlet channel and a first water outlet channel penetrating the housing; Positioning protrusion; the positioning protrusion is arranged on the inner wall surface of the shell; Positioning groove; the positioning groove is arranged on the outer surface of the filter body; A hollow fastener; the fastener is arranged in the first water outlet channel; Wherein, when the filter body is inserted into the receiving space inside the housing along the axial direction, the positioning protrusion cooperates with the positioning groove to limit the relative movement of the filter body and the housing in the axial direction; When the filter body rotates relative to the shell around the axial direction until the filtered water outlet is aligned with the first water outlet channel, at least a portion of the fastener is inserted into the filtered water outlet to limit the relative rotation of the filter body and the shell in the axial direction.

2. The pre-filter according to claim 1, characterized in that: The fastener comprises: A hollow fastener body; the outer surface of the fastener body is provided with threads and is threadedly connected to the housing; A hollow fixing portion; the fixing portion extends from one end of the fastener body along the axial direction of the fastener and is inserted into the filtered water outlet; The mounting end portion is formed at the other end of the fastener body and is located in the first water outlet channel.

3. The pre-filter according to claim 2, characterized in that: The mounting end is provided with one or more mating interfaces adapted to an external tool so that the rotational torque of the external tool is applied to the fastener; The mating interface includes: a hexagonal protrusion and a screwdriver slot.

4. The pre-filter according to claim 1, characterized in that: The positioning protrusions and positioning grooves are each provided with two or more; Wherein, two or more positioning protrusions are arranged along the circumference of the inner wall surface of the shell, and the arcs of the intervals between two adjacent positioning protrusions are equal.

5. The pre-filter according to claim 1, characterized in that: The positioning groove extends along the circumference of the outer surface of the filter body and has a first groove end and a second groove end that are away from each other in the circumferential direction; Wherein, the end of the first groove is a limiting end, and the end of the second groove is a notch end; The positioning protrusion enters the positioning groove through the notch end, and abuts against the limiting end when the filter body rotates relative to the shell around the axial direction until the filtered water outlet is aligned with the first water outlet channel.

6. The pre-filter according to claim 1, characterized in that: The shell is also provided with a second water outlet channel penetrating the shell; Wherein, the water inlet is arranged on one of the end faces of the filter body; the filtered water outlet is arranged on the side wall of the filter; The water inlet channel is opened on one of the end faces of the shell; the first water outlet channel and the second water outlet channel are opened on the side wall of the shell.

7. The pre-filter according to claim 6, characterized in that: The filter body and the housing are both cylindrical; The outer surface of the shell is also provided with: a water inlet joint, a first water outlet joint and a second water outlet joint; Wherein, the water inlet channel extends to the water inlet joint; the first water outlet channel extends to the first water outlet joint; and the second water outlet channel extends to the second water outlet joint.

8. The pre-filter according to claim 1, characterized in that: Also includes: Sealing components; The sealing component is disposed between the outer surface of the filter body and the inner wall surface of the housing so that the gap between the filter body and the housing is filled.

9. The pre-filter according to claim 8, characterized in that: The outer surface of the filter body is provided with a plurality of sealing grooves along the circumferential direction; The sealing component includes: a plurality of sealing rings; Wherein, one of the sealing rings is locked in one of the sealing grooves to fill the gap between the outer surface of the filter body and the inner surface of the shell.

10. A toilet, characterized in that: include: A toilet body and a pre-filter as described in any one of claims 1 to 9; the pre-filter is used to provide filtered clean water to the toilet body through a first water outlet channel.

Images