Piston anti-cracking structure and central water purifier

Abstract

The utility model discloses a piston anti-cracking structure, which is applied to a central water purifier and comprises a filter bottle, a filter element, a bottom cover and a piston, the middle part of the bottom cover is sunken upwards to form a central cylinder, and the peripheral part of the top surface of the bottom cover is provided with a mounting position for mounting a filter element; the piston is mounted in the central cylinder, and the peripheral wall of the piston is in sealed contact with the inner peripheral wall of the central cylinder; a space filled with gas is formed among the upper end surface of the piston, the inner end surface of the central cylinder and the inner peripheral wall of the central cylinder, and the lower end surface of the piston is positioned in a liquid flow channel in the filter bottle; the piston can slide in the center cylinder in a reciprocating mode. According to the scheme, the piston slides back and forth in the central cylinder under the action of pressure, so that the effect of adjusting the pressure in the filter bottle is achieved, and the situation that parts such as a filter element in the filter bottle are damaged and the filter bottle bursts due to the fact that the pressure in the filter bottle is too large is avoided. The utility model further discloses a central water purifier using the piston anti-cracking structure.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment technology, and in particular to a piston anti-crack structure and a central water purifier. Background Technology

[0002] A central water purifier is a large-scale household water treatment device that originated in 1732. It is suitable for whole-house central water purification and its core technologies mainly include microfiltration, ultrafiltration, KDF, ACF, and ceramic filter elements.

[0003] As living standards continue to improve, people have higher and higher requirements for water quality. Central water purification equipment is being installed in household water systems such as well water dispensers or under-sink systems to ensure the water quality needs of downstream smart water devices.

[0004] However, during the use of traditional central water purifiers, some factors can cause excessive pressure inside the filter bottle, which can lead to damage to the central water purifier. Utility Model Content

[0005] In view of this, the present invention provides a piston anti-crack structure, in which a piston is set inside the filter bottle to regulate the pressure inside the central water purifier and prevent the central water purifier from being damaged by pressure.

[0006] This utility model also provides a central water purifier including the above-mentioned piston anti-crack structure.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A piston anti-crack structure is applied to a central water purifier, comprising: a filter bottle and filter elements, a bottom cover and a piston, all disposed within the filter bottle;

[0009] The middle part of the bottom cover is recessed upward to form a central cylinder, and the top surface of the bottom cover has mounting positions for installing the filter element.

[0010] The piston is installed inside the central cylinder, and the peripheral wall of the piston and the inner peripheral wall of the central cylinder are in sealed contact; a gas-filled space is formed between the upper end face of the piston, the inner end face of the central cylinder and the inner peripheral wall of the central cylinder, and the lower end face of the piston is located in the liquid flow channel inside the filter bottle; the piston can slide back and forth inside the central cylinder.

[0011] Preferably, the piston is made of an elastic, soft material.

[0012] Preferably, the piston has a hollow interior.

[0013] Preferably, the outer peripheral wall of the piston has a spring-like structure.

[0014] Preferably, it further includes: a valve head and a fixing component;

[0015] The fixed end of the valve head is sleeved on the top of the filter bottle, and the fixed end of the valve head and the top plate of the filter bottle are fixed by the fastener.

[0016] Preferably, the outer peripheral wall of the fixed end of the valve head is provided with external threads;

[0017] The top inner peripheral wall of the fixing member is provided with an internal thread that engages with the external thread, and the bottom inner peripheral wall of the fixing member is provided with a limiting edge that engages with the top limiting edge of the filter bottle.

[0018] Preferably, the valve head is equipped with a pressure gauge;

[0019] And / or, the filter element is a composite filter element, and the filter element contains scale-inhibiting filter media.

[0020] Preferably, it further includes: a filter cartridge disposed inside the filter bottle;

[0021] The liquid flow channel includes: a first liquid flow channel and a second liquid flow channel;

[0022] The inner peripheral wall of the filter cartridge is sleeved on the outer peripheral wall of the filter element, and the gap between the filter cartridge and the filter element forms the first liquid flow channel;

[0023] The bottom inner wall of the filter cartridge is fitted onto the bottom surface of the bottom cover, and the gap between the bottom inner wall of the filter cartridge and the bottom surface of the bottom cover forms the second liquid flow channel;

[0024] The first liquid flow channel is connected to the second liquid flow channel, and the lower end face of the piston is located inside the second liquid flow channel.

[0025] Preferably, the bottom of the bottom cover has an annular support member for supporting the bottom of the filter cartridge, and the annular surface of the annular support member has a through groove along its radial direction.

[0026] A central water purifier includes: the aforementioned piston anti-crack structure.

[0027] As can be seen from the above technical solution, the piston anti-crack structure provided by this utility model allows the piston to slide back and forth in the central cylinder under pressure, thereby regulating the pressure inside the filter bottle. This prevents damage to components such as the filter element and filter bottle from bursting due to excessive pressure inside the filter bottle, extending the service life of the central water purifier and enabling the central water purifier to be installed and used in different environments.

[0028] This utility model also provides a central water purifier. Due to the adoption of the above-mentioned piston anti-crack structure, it has corresponding beneficial effects, which can be referred to in the previous description and will not be repeated here. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A cross-sectional view of the central water purifier provided for an embodiment of this utility model;

[0031] Figure 2 A cross-sectional view of the valve head provided in an embodiment of this utility model;

[0032] Figure 3 A cross-sectional view of the valve head fixing member provided in an embodiment of this utility model;

[0033] Figure 4 A cross-sectional view of the bottom cover and piston assembly provided in an embodiment of this utility model;

[0034] Figure 5 A schematic diagram of liquid flow during filtration in a central water purifier provided for an embodiment of the utility model;

[0035] Figure 6 A schematic diagram of piston movement provided for an embodiment of the utility model;

[0036] Figure 7 for Figure 6 A partial schematic diagram.

[0037] Wherein, 1 is the valve head, 101 is the external thread, 102 is the water inlet, and 103 is the water outlet;

[0038] 2 is a fastener, 201 is an internal thread, and 202 is a limiting edge;

[0039] 3 is the filter bottle; 4 is the filter element;

[0040] 5 is the bottom cover, 51 is the mounting position, 52 is the central cylinder, and 53 is the annular support component;

[0041] 6 represents a piston, 601 represents a spring-like structure, and 602 represents a hollow structure;

[0042] 7 is the filter cartridge; 8 is the first liquid flow channel; 9 is the second liquid flow channel. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] The piston anti-crack structure provided in this embodiment of the utility model, such as Figures 1-7 As shown, it is applied to a central water purifier and includes: a filter bottle 3 and filter cartridges 4, a bottom cover 5 and a piston 6, all of which are disposed in the filter bottle 3;

[0045] The middle portion of the bottom cover 5 is recessed upwards to form a central cylinder 52, and the top surface of the bottom cover 5 has mounting positions 51 for installing the filter element 4 around its perimeter; it should be noted that the upward direction is... Figure 1 The upward direction;

[0046] Piston 6 is installed inside the central cylinder 52, and the peripheral wall of piston 6 is in sealed contact with the inner peripheral wall of central cylinder 52; a gas-filled space is formed between the upper end face of piston 6, the inner end face of central cylinder 52 and the inner peripheral wall of central cylinder 52, and the lower end face of piston 6 is located in the liquid flow channel inside filter bottle 3; piston 6 can slide back and forth inside central cylinder 52.

[0047] In the above technical solution, when the central water purifier operates in a harsh environment, the pressure inside the filter bottle 3 increases. This pressure, along with the liquid flow channel, acts on the lower end face of the piston 6. When the pressure inside the filter bottle 3 reaches a certain value (greater than the pressure in the gas-filled space), the piston 6, under the pressure, generates a thrust and slides upwards along the axial direction of the central cylinder 52 (e.g., ...). Figure 6 As shown (where the arrow indicates the sliding direction of piston 6), during the upward sliding of piston 6, the space in the liquid flow channel increases, resulting in a decrease in pressure in the air pressure filter bottle 3. This prevents damage to components such as the filter element 4 inside the filter bottle 3 and avoids the filter bottle 3 bursting due to increased pressure. When the central water purifier returns to normal operation, the pressure formed by the gas space is greater than the pressure in the liquid flow channel, causing piston 6 to automatically reset. The specific position of piston 6 after automatic reset can be found by referring to... Figure 5 As shown.

[0048] The aforementioned harsh environments include, but are not limited to, the freezing of liquid inside filter bottle 3 in low-temperature environments, which leads to an increase in pressure inside filter bottle 3; the formation of a water hammer effect each time the central water purifier is turned on or off in atmospheric pressure environments, which causes the water pressure inside filter bottle 3 to rise, resulting in excessive pressure inside filter bottle 3; and the increase in water pressure inside filter bottle 3 after secondary water supply in atmospheric pressure environments, resulting in excessive pressure inside filter bottle 3.

[0049] In the above technical solution, compared with the prior art, the piston can slide back and forth in the central cylinder 52 under pressure, which can regulate the pressure in the filter bottle 3, avoid damage to the filter element 4 and other components in the filter bottle 3 and the bursting of the filter bottle 3 due to excessive pressure in the filter bottle 3, extend the service life of the central water purifier, and make the central water purifier installable and usable in different environments.

[0050] To optimize the above technical solution, the piston 6 is made of an elastic soft material. In this technical solution, since the piston 6 is made of an elastic soft material, it is compressed as it moves upward, so as to release more liquid flow channel space and enable the central water purifier to adjust to greater pressure. Because it is made of an elastic soft material, when the pressure in the liquid flow channel is low, the piston 6 can automatically return to its original shape.

[0051] Further optimization of the above technical solutions, such as Figure 4 As shown, the interior of piston 6 is a hollow structure 602. During the upward movement of piston 6, the hollow structure 602 is compressed to release more liquid flow space, thereby enabling the central water purifier to regulate greater pressure.

[0052] Further optimization of the above technical solutions, such as Figure 4 As shown, the outer peripheral wall of piston 6 is a spring-like structure 601, which ensures that the outer peripheral wall of piston 6 and the inner peripheral wall of central cylinder 52 are in sealed contact, and also makes piston 6 more elastic, which is beneficial for piston 6 to be compressed, moved and automatically return to its original state.

[0053] In this technical solution, such as Figure 1 As shown, it also includes: valve head 1 and fixing component 2;

[0054] The fixed end of the valve head 1 is sleeved on the top of the filter bottle 3, and the fixed end of the valve head 1 and the top plate of the filter bottle 3 are fixed by the fastener 2; the sleeve connection is quick and stable, and the fastener 2 makes the connection between the filter bottle 3 and the valve head 1 more secure.

[0055] Optimize the above technical solutions, such as Figure 2 As shown, the outer peripheral wall of the fixed end of the valve head 1 is provided with an external thread 101;

[0056] like Figure 3As shown, the top inner circumferential wall of the fixing member 2 is provided with an internal thread 201 that mates with the external thread 101, and the bottom inner circumferential wall of the fixing member 2 is provided with a limiting edge 202 that mates with the top of the filter bottle 3. In this technical solution, the limiting edge 202 mates with the annular rib at the top of the filter bottle 3 for limiting, and the internal thread 201 is screwed and tightened with the external thread 101 to seal and fix the valve head 1 and the filter bottle 3. Preferably, the limiting edge 202 is an annular boss.

[0057] In this technical solution, valve head 1 is equipped with a pressure gauge, through which the pressure value of valve head 1 can be read at any time;

[0058] And / or, filter element 4 is a composite filter element, which is a multi-functional filter element combination, with better filtration and purification effect, and filter element 4 contains scale-inhibiting filter media to prevent scale buildup.

[0059] In this technical solution, such as Figure 1 and Figure 7 As shown, it also includes: a filter cylinder 7 disposed inside the filter bottle 3, wherein the axial direction of the filter bottle 3 and the axial direction of the filter cylinder 7 coincide;

[0060] The liquid flow channel includes: a first liquid flow channel 8 and a second liquid flow channel 9;

[0061] The inner peripheral wall of the filter cartridge 7 is fitted onto the outer peripheral wall of the filter element 4, and the gap between the filter cartridge 7 and the filter element 4 forms the first liquid flow channel 8.

[0062] The bottom inner wall of the filter cartridge 7 is fitted onto the bottom surface of the bottom cover 5, and the gap between the bottom inner wall of the filter cartridge 7 and the bottom surface of the bottom cover 5 forms a second liquid flow channel 9.

[0063] The first liquid flow channel 8 is connected to the second liquid flow channel 9, and the lower end face of the piston 6 is located inside the second liquid flow channel 9.

[0064] In the above technical solution, when the pressure in filter bottle 3 increases, the liquid flows from the first liquid flow channel 8 to the second liquid flow channel 9, and then the piston 6 located in the second liquid flow channel 9 is used for pressure regulation (liquid flow direction is as follows). Figure 7 (The arrow points to); In another case, when the air pressure in the filter bottle 3 increases, the pressurized water flows through the first liquid channel 8 to the second liquid channel 9, and then the piston 6 located in the second liquid channel 9 is used to regulate the pressure; The pressure described in this technical solution can be the pressure formed by water pressure formed by liquid and / or the pressure formed by gas pressure formed by gas.

[0065] Optimize the above technical solutions, such as Figure 4As shown, the bottom of the bottom cover 5 has an annular support 53, which supports the bottom of the filter cartridge 7. The annular support 53 has a through groove on its annular surface. In this technical solution, the supporting effect of the annular support 53 makes a gap between the bottom inner wall of the filter cartridge 7 and the bottom surface of the bottom cover 5. The through groove allows the second liquid flow channel to flow without obstruction. At the same time, the setting of the annular support 53 makes the piston anti-crack structure more stable.

[0066] This utility model also provides a central water purifier, including the piston anti-crack structure as described above. Since this solution employs the aforementioned piston anti-crack structure, it possesses corresponding beneficial effects, as detailed in the preceding description, which will not be repeated here.

[0067] In one embodiment, the main flow direction of the filtered liquid in the central water purifier is as follows: Figure 5 As indicated by the arrow, the filtered liquid enters through the inlet 102, passes sequentially through the filter cartridge 7 and filter element 4, exits through the outlet 103 from the top opening of the filter bottle 3; it should be noted that, combined with Figure 7 As shown, the filtered liquid enters from the inlet 102, and a portion of the filtered liquid passing through the filter cylinder 7 flows through the first liquid channel 8 to the second liquid channel 9.

[0068] The diameter of the inlet 02 is equal to the diameter of the outlet 103, and the inlet and outlet external threads of the valve head 1 are connected to the household pipes.

[0069] What are the key points and areas to be protected in this utility model?

[0070] Expandable cavity elastomer piston anti-crack structure; sealing design between filter bottle and valve head; pressure reduction principle; valve head can be upgraded with pressure gauge.

[0071] Advantages of this invention: The current central water purifier features a piston anti-crack structure inside the bottle. When the water freezes, the pressure inside the bottle increases, and the spring-loaded piston moves upward under pressure, compressing the air and reducing the air volume while decreasing the pressure inside the bottle. At the same time, the hollow middle part of the elastic piston and its spring-like structure cause the elastic piston to contract, which also appropriately reduces the pressure inside the bottle, protecting the machine's safety and greatly enhancing the machine's performance under extreme conditions.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A piston anti-crack structure, applied to a central water purifier, characterized in that, include: The filter bottle (3) and the filter element (4), bottom cover (5) and piston (6) are all disposed in the filter bottle (3); The middle part of the bottom cover (5) is recessed upward to form a central cylinder (52), and the top surface of the bottom cover (5) has a mounting position (51) for installing the filter element (4). The piston (6) is installed inside the central cylinder (52), and the peripheral wall of the piston (6) and the inner peripheral wall of the central cylinder (52) are in sealed contact; a gas-filled space is formed between the upper end face of the piston (6), the inner end face of the central cylinder (52) and the inner peripheral wall of the central cylinder (52), and the lower end face of the piston (6) is located in the liquid flow channel inside the filter bottle (3); the piston (6) can slide back and forth inside the central cylinder (52).

2. The piston anti-crack structure according to claim 1, characterized in that, The piston (6) is made of an elastic soft material.

3. The piston anti-crack structure according to claim 2, characterized in that, The piston (6) has a hollow structure (602) inside.

4. The piston anti-crack structure according to claim 2, characterized in that, The outer peripheral wall of the piston (6) is a spring-shaped structure (601).

5. The piston anti-crack structure according to claim 1, characterized in that, Also includes: Valve head (1) and fixing part (2); The fixed end of the valve head (1) is sleeved on the top of the filter bottle (3), and the fixed end of the valve head (1) and the top plate of the filter bottle (3) are fixed by the fastener (2).

6. The piston anti-crack structure according to claim 5, characterized in that, The valve head (1) has an external thread (101) on the outer peripheral wall of the fixed end; The top inner peripheral wall of the fixing member (2) is provided with an internal thread (201) that engages with the external thread (101), and the bottom inner peripheral wall of the fixing member (2) is provided with a limiting edge (202) that engages with the top of the filter bottle (3).

7. The piston anti-crack structure according to claim 5, characterized in that, The valve head (1) is equipped with a pressure gauge; And / or, the filter element (4) is a composite filter element, and the filter element (4) contains scale-inhibiting filter media.

8. The piston anti-crack structure according to any one of claims 1-7, characterized in that, Also includes: The filter cartridge (7) is installed inside the filter bottle (3); The liquid flow channel includes: a first liquid flow channel (8) and a second liquid flow channel (9); The inner peripheral wall of the filter cylinder (7) is sleeved on the outer peripheral wall of the filter element (4), and the gap between the filter cylinder (7) and the filter element (4) forms the first liquid flow channel (8); The bottom inner wall of the filter cartridge (7) is fitted onto the bottom surface of the bottom cover (5), and the gap between the bottom inner wall of the filter cartridge (7) and the bottom surface of the bottom cover (5) forms the second liquid flow channel (9); The first liquid flow channel (8) is connected to the second liquid flow channel (9), and the lower end face of the piston (6) is located in the second liquid flow channel (9).

9. The piston anti-crack structure according to claim 8, characterized in that, The bottom of the bottom cover (5) has an annular support (53) for supporting the bottom of the filter cartridge (7), and the annular surface of the annular support (53) has a through groove along its radial direction.

10. A central water purifier, characterized in that, include: The piston anti-crack structure as described in any one of claims 1-9.

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