Filter structure of water inlet valve

Abstract

The utility model discloses a filter structure of a water inlet valve, which relates to the technical field of water inlet valves, the filter structure comprises a separator, a first filter barrel and a second filter barrel, the separator divides a water passing cavity into a first chamber and a second chamber; the first filtering barrel is arranged in the first cavity and divides the first cavity into a first-stage water inlet cavity and a first-stage water outlet cavity, the first-stage water inlet cavity is communicated with the water inlet, water flow enters the first-stage water inlet cavity, and the water flow in the first-stage water inlet cavity can penetrate through the barrel wall of the first filtering barrel to enter the first-stage water outlet cavity; the second filtering barrel is arranged in the second cavity and divides the second cavity into a second-stage water inlet cavity and a second-stage water outlet cavity, the second-stage water inlet cavity is communicated with the first-stage water outlet cavity through a water passing hole in the partition piece, water flow in the second-stage water inlet cavity can penetrate through the barrel wall of the second filtering barrel to enter the second-stage water outlet cavity, and the second-stage water outlet cavity is communicated with the water outlet. According to the utility model, the filter structure is more convenient and quicker to disassemble and assemble while the filter effect is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of water inlet valves, and particularly relates to a water inlet valve filtering structure. Background Art

[0002] Most of the current water inlet valve filtering structures are located at the connection part between the water inlet pipe and the domestic water network. When dirt accumulates and needs to be cleaned, the user needs to disassemble the connection part between the water inlet pipe and the domestic water network, and then use tools such as pliers to assist in taking out the filtering structure for cleaning. Then, the filtering structure needs to be reinstalled before normal water inlet can be restored. Usually, the connection part between the water inlet pipe and the domestic water network is at the bottom of the water tank, which is troublesome and inconvenient to disassemble and assemble. Moreover, most of the existing filtering structures have only one-stage filtration, with poor filtering effect, which easily causes the water outlet in the water inlet valve to be blocked, resulting in a small amount of water inlet into the water tank or even difficult water inlet. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a water inlet valve filtering structure, which overcomes the above defects and makes the disassembly and assembly of the filtering structure more convenient and fast while optimizing the filtering effect.

[0004] To achieve the above purpose, the solution of the utility model is as follows:

[0005] A water inlet valve filtering structure, the water inlet valve has a water inlet and a water outlet, the water inlet and the water outlet are conducted through a water passing cavity in the water inlet valve, one end of the water passing cavity extends to the top side of the water inlet valve to form an opening at the top side of the water inlet valve, and the filtering structure is arranged in the water passing cavity. The water inlet valve further includes a sealing plug, which is used to seal or open the opening, and the sealing plug is connected to the filtering structure so that when the sealing plug opens the opening, the filtering structure is taken out of the water passing cavity; the filtering structure includes a partition member, a first filtering barrel and a second filtering barrel. The partition member divides the water passing cavity into a first chamber and a second chamber; the first filtering barrel is arranged in the first chamber, dividing the first chamber into a primary water inlet cavity inside the first filtering barrel and a primary water outlet cavity outside the first filtering barrel. The first filtering barrel is connected to the partition member, and the primary water inlet cavity is communicated with the water inlet so that water flow enters the primary water inlet cavity. The water flow in the primary water inlet cavity can enter the primary water outlet cavity after passing through the barrel wall of the first filtering barrel for filtration; the second filtering barrel is arranged in the second chamber, dividing the second chamber into a secondary water inlet cavity inside the second filtering barrel and a secondary water outlet cavity outside the second filtering barrel. The second filtering barrel is connected to the partition member, and the secondary water inlet cavity is communicated with the primary water outlet cavity through a water passing hole on the partition member. The water flow in the secondary water inlet cavity can enter the secondary water outlet cavity after passing through the barrel wall of the second filtering barrel for filtration, and the secondary water outlet cavity is communicated with the water outlet.

[0006] Further, the filtering structure further includes a necking section located between the partition and the first filtering barrel. The partition is connected to the first filtering barrel through the necking section, so that there is a gap between the partition and the first filtering barrel.

[0007] Further, there are a plurality of water passing holes, and the plurality of water passing holes are circumferentially arranged around the necking section.

[0008] Further, a filtering bracket is arranged on the side of the partition away from the first filtering barrel. The filtering bracket is used for the second filtering barrel to be inserted therein, and the mouth of the second filtering barrel faces the water passing holes and is communicated with the water passing holes.

[0009] Further, the second filtering barrel is a bottomless filtering barrel. One end of the sealing plug close to the second filtering barrel is detachably connected to the filtering bracket, and a support frame is arranged at this end. The support frame is inserted into the secondary water inlet cavity from the bottom side of the second filtering barrel to clamp the second filtering barrel between the filtering bracket and the support frame.

[0010] Further, a water outlet cavity is arranged around the water passing cavity in the water inlet valve. A water outlet channel is arranged in the water outlet cavity. The water inlet end of the water outlet channel is communicated with the water passing cavity through a water outlet, and the water outlet end of the water outlet channel is located on the top side of the water outlet cavity and is communicated with the water outlet cavity. A back pressure pad is also arranged in the water inlet valve. The back pressure pad is used for blocking or opening the water outlet, so that when the water outlet is blocked, the water inlet end of the water outlet channel is separated from the water passing cavity, and when the water outlet is opened, the water inlet end of the water outlet channel is communicated with the water passing cavity.

[0011] Further, an anti-siphon pad is also arranged in the water outlet cavity. The anti-siphon pad is located between the water outlet end of the water outlet channel and the top wall of the water outlet cavity. A plurality of air inlet holes are also arranged on the top wall of the water outlet cavity. The air inlet holes are communicated with the water outlet cavity and the external air pressure. When the water outlet channel discharges water into the water outlet cavity, the anti-siphon pad is pushed up by the water pressure to block the air inlet holes. When the water outlet channel stops discharging water, the anti-siphon pad falls to block the water outlet end of the water outlet channel.

[0012] After adopting the above scheme, the beneficial effects of the present utility model are as follows:

[0013] One end of the water passing cavity extends to the top side of the water inlet valve to form an opening on the top side of the water inlet valve, and the filtering structure is arranged in the water passing cavity. The water inlet valve further includes a sealing plug for sealingly blocking or opening the opening, and the sealing plug is connected to the filtering structure, so that when the sealing plug opens the opening, the filtering structure is taken out of the water passing cavity. Therefore, the disassembly and assembly of the filtering structure of the present utility model are more convenient and fast;

[0014] Moreover, the filtering structure includes a partition, a first filtering barrel, and a second filtering barrel. The partition divides the water passing cavity into a first chamber and a second chamber. The first filtering barrel is arranged in the first chamber, dividing the first chamber into a primary water inlet chamber inside the first filtering barrel and a primary water outlet chamber outside the first filtering barrel. The first filtering barrel is connected to the partition. The primary water inlet chamber is communicated with the water inlet so that water can flow into the primary water inlet chamber. The water flow in the primary water inlet chamber can enter the primary water outlet chamber after passing through the barrel wall of the first filtering barrel for filtration. The second filtering barrel is arranged in the second chamber, dividing the second chamber into a secondary water inlet chamber inside the second filtering barrel and a secondary water outlet chamber outside the second filtering barrel. The second filtering barrel is connected to the partition. The secondary water inlet chamber is communicated with the primary water outlet chamber through the water passing holes on the partition. The water flow in the secondary water inlet chamber can enter the secondary water outlet chamber after passing through the barrel wall of the second filtering barrel for filtration. The secondary water outlet chamber is communicated with the water outlet. Therefore, the water flow flowing into the water outlet of the water inlet valve is the water flow that has been filtered twice by the filtering structure. The sundries in the water flow are intercepted through the secondary filtration, optimizing the filtering effect, preventing the water outlet in the water inlet valve from being blocked, and avoiding the water inlet into the water tank by the water inlet valve being too small or even difficult to enter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structural schematic diagram of the water inlet valve of the present utility model;

[0016] Figure 2 is the overall exploded view of the water inlet valve of the present utility model;

[0017] Figure 3 is the internal structural schematic diagram of the water inlet valve of the present utility model;

[0018] Figure 4 is the installation schematic diagram of the sealing plug and the filtering structure of the present utility model

[0019] Figure 5 is Figure 4 the enlarged view of part A of

[0020] Figure 6 is Figure 4 the cross-sectional view of

[0021] Figure 7 is Figure 4 the exploded schematic diagram of

[0022] Description of reference numerals: 10, water inlet valve; 11, water inlet; 12, water outlet; 13, water passage chamber; 131, first chamber; 132, second chamber; 14, opening; 15, sealing plug; 151, support frame; 16, water outlet chamber; 161, water outlet passage; 162, air inlet hole; 163, anti-siphon gasket; 17, valve seat; 18, back pressure gasket; 20, filtering structure; 21, first filter barrel; 22, second filter barrel; 23, partition member; 231, filter support; 232, water passing hole; 24, necking section. Detailed implementation manners

[0023] The following will make a detailed description of the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0024] As Figures 1 to 7 shown, a filtering structure 20 of a water inlet valve 10. The water inlet valve 10 has a water inlet 11 and a water outlet 12. The water inlet 11 and the water outlet 12 are conducted through a water passage chamber 13 inside the water inlet valve 10. One end of the water passage chamber 13 extends to the top side of the water inlet valve 10 to form an opening 14 on the top side of the water inlet valve 10, and the filtering structure 20 is arranged inside the water passage chamber 13. The water inlet valve 10 further includes a sealing plug 15. The sealing plug 15 is used to seal or open the opening 14, and the sealing plug 15 is connected to the filtering structure 20 so that when the sealing plug 15 opens the opening 14, the filtering structure 20 is taken out of the water passage chamber 13.

[0025] The filtering structure 20 includes a partition member 23, a first filter barrel 21 and a second filter barrel 22. The partition member 23 divides the water passage chamber 13 into a first chamber 131 and a second chamber 132. The first filter barrel 21 is arranged inside the first chamber 131, dividing the first chamber 131 into a primary water inlet chamber inside the first filter barrel 21 and a primary water outlet chamber 16 outside the first filter barrel 21. The first filter barrel 21 is connected to the partition member 23. The primary water inlet chamber is communicated with the water inlet 11 so that water flow enters the primary water inlet chamber. The water flow in the primary water inlet chamber can enter the primary water outlet chamber 16 after passing through the barrel wall of the first filter barrel 21 for filtration. The second filter barrel 22 is arranged inside the second chamber 132, dividing the second chamber 132 into a secondary water inlet chamber inside the second filter barrel 22 and a secondary water outlet chamber 16 outside the second filter barrel 22. The second filter barrel 22 is connected to the partition member 23. The secondary water inlet chamber is communicated with the primary water outlet chamber 16 through the water passing hole 232 on the partition member 23. The water flow in the secondary water inlet chamber can enter the secondary water outlet chamber 16 after passing through the barrel wall of the second filter barrel 22 for filtration. The secondary water outlet chamber 16 is communicated with the water outlet 12. Specifically, a sealing ring is arranged on the sealing plug 15 so that the sealing plug 15 has a sealing effect, thereby enabling the sealing plug 15 to seal the opening.

[0026] Specifically, without disassembling the water inlet pipe, it is only necessary to close the valve of the domestic water network. By opening the sealing plug 15 on the top side of the water inlet valve 10, the entire filtering structure 20 can be directly removed from the water passing cavity 13 and the filtering structure 20 can be cleaned. After the cleaning is completed, the filtering structure 20 and the sealing plug 15 can be reinstalled for normal use. Therefore, the filtering structure 20 of the present utility model is convenient to disassemble and assemble, easy to clean, and the filtering effect is optimized.

[0027] Specifically, the filtering structure 20 further includes a necking section 24, and the necking section 24 is located between the partition member 23 and the first filtering barrel 21. The partition member 23 is connected to the first filtering barrel 21 through the necking section 24, so that there is a gap between the partition member 23 and the first filtering barrel 21. Through the gap, the water flow in the primary water outlet cavity 16 can flow to the water passing holes 232 and flow into the secondary water inlet cavity through the water passing holes 232. Specifically, there are multiple water passing holes 232, and the multiple water passing holes 232 are circumferentially arrayed around the necking section 24 for improving the efficiency of water flow entering the secondary water inlet cavity.

[0028] Specifically, a filtering support 231 is provided on the side of the partition member 23 away from the first filtering barrel 21. The filtering support 231 is used for the second filtering barrel 22 to be inserted therein to limit the lateral movement of the second filtering barrel 22 in the water passing cavity 13, and the barrel mouth of the second filtering barrel 22 faces the water passing holes 232 and is communicated with the water passing holes 232 to facilitate the water flow to enter the secondary water inlet cavity.

[0029] Specifically, the second filtering barrel 22 is a bottomless filtering barrel. One end of the sealing plug 15 close to the second filtering barrel 22 is detachably connected to the filtering support 231, and a support frame 151 is provided at this end. The support frame 151 is inserted into the secondary water inlet cavity from the bottom side of the second filtering barrel 22 to clamp the second filtering barrel 22 between the filtering support 231 and the support frame 151. Specifically, a clamping block is provided on the side wall of one end of the sealing plug 15 close to the second filtering barrel 22, and a clamping groove is provided on the filtering support 231. The clamping groove is used for the clamping block to be clamped therein. By the clamping block being clamped in the clamping groove, the filtering support 231 is detachably connected to the sealing plug 15 to limit the position of the second filtering barrel 22.

[0030] Furthermore, a water outlet cavity 16 is provided around the water passing cavity 13 in the water inlet valve 10. A water outlet channel 161 is provided in the water outlet cavity 16. The water inlet end of the water outlet channel 161 is communicated with the water passing cavity 13 through a water outlet 12, and the water outlet end of the water outlet channel 161 is located on the top side of the water outlet cavity 16 and is conducted with the water outlet cavity 16. A back pressure pad 18 is further provided in the water inlet valve 10. The back pressure pad 18 is used to block or open the water outlet 12, so that when the water outlet 12 is blocked, the water inlet end of the water outlet channel 161 is separated from the water passing cavity 13, and when the water outlet 12 is opened, the water inlet end of the water outlet channel 161 is conducted with the water passing cavity 13.

[0031] Furthermore, an anti-siphon pad 163 is provided in the water outlet chamber 16, and the anti-siphon pad 163 is located between the water outlet end of the water outlet channel 161 and the top wall of the water outlet chamber 16. A plurality of air inlet holes 162 are also provided on the top wall of the water outlet chamber 16, and the air inlet holes 162 connect the water outlet chamber 16 with the external air pressure. When the water outlet channel 161 discharges water to the water outlet chamber 16, the anti-siphon pad 163 is pushed up by the water pressure to block the air inlet holes 162. When the water outlet channel 161 stops discharging water, the anti-siphon pad 163 falls and blocks the water outlet end of the water outlet channel 161 to prevent the occurrence of a siphon phenomenon, which causes the water in the toilet to be sucked into the domestic water network and cause pollution.

[0032] Specifically, the water inlet valve 10 includes a valve seat 17, a back pressure pad 18 is arranged in the valve seat 17, and the water outlet 12 is arranged in the valve seat 17, one side of the back pressure pad 18 faces the water outlet 12, and is used for crimping and sealing on the water outlet 12, and the other side separates a back pressure cavity in the valve seat 17, and the back pressure cavity is connected to the water cavity 13. A pressure relief channel is also arranged on the valve seat 17, and the water flow in the back pressure cavity flows into the outside through the pressure relief channel. A plugging member is also arranged outside the valve seat 17, and the plugging member Used to block or open the pressure relief channel. When the pressure relief channel is blocked, water flows into the back pressure chamber to form back pressure, pushing the back pressure pad 18 toward the water outlet 12 to block the water outlet 12 to separate the water outlet channel 161 and the water passage chamber 13. When the pressure relief channel is opened, the water in the back pressure chamber flows into the outside from the pressure relief channel, and the water pressure pushes the back pressure pad 18 from the water passage chamber 13 to open the water outlet 12, so that the water passage chamber 13 and the water inlet end of the water outlet channel 161 are connected.

[0033] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0034] Meanwhile, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A water inlet valve filtering structure, characterized in that: The water inlet valve has a water inlet and a water outlet. The water inlet and the water outlet are communicated through a water passage cavity inside the water inlet valve. One end of the water passage cavity extends to the top side of the water inlet valve to form an opening on the top side of the water inlet valve. And the filtering structure is arranged in the water passage cavity. The water inlet valve further includes a sealing plug, which is used to seal or open the opening, and the sealing plug is connected to the filtering structure so as to bring the filtering structure out of the water passage cavity while the sealing plug opens the opening; The filtering structure includes a partition member, a first filter barrel and a second filter barrel. The partition member divides the water passage cavity into a first chamber and a second chamber; The first filter barrel is arranged in the first chamber, and divides the first chamber into a primary water inlet cavity located inside the first filter barrel and a primary water outlet cavity located outside the first filter barrel. The first filter barrel is connected to the partition member. The primary water inlet cavity is communicated with the water inlet so that water can flow into the primary water inlet cavity. The water flow in the primary water inlet cavity can enter the primary water outlet cavity after passing through the barrel wall of the first filter barrel for filtration; The second filter barrel is arranged in the second chamber, and divides the second chamber into a secondary water inlet cavity located inside the second filter barrel and a secondary water outlet cavity located outside the second filter barrel. The second filter barrel is connected to the partition member. The secondary water inlet cavity is communicated with the primary water outlet cavity through a water passage hole on the partition member. The water flow in the secondary water inlet cavity can enter the secondary water outlet cavity after passing through the barrel wall of the second filter barrel for filtration, and the secondary water outlet cavity is communicated with the water outlet.

2. The filtering structure of the water inlet valve according to claim 1, characterized in that: The filtering structure further includes a necking section, which is located between the partition member and the first filter barrel. The partition member is connected to the first filter barrel through the necking section so that there is a gap between the partition member and the first filter barrel.

3. The inlet valve filtering structure according to claim 2, characterized in that: There are multiple water passage holes, and the multiple water passage holes are circumferentially arrayed around the necking section.

4. The filtering structure of a water inlet valve according to claim 2, characterized in that: A filter bracket is arranged on the side of the partition member away from the first filter barrel. The filter bracket is used for the second filter barrel to be inserted therein, and the barrel mouth of the second filter barrel faces the water passage hole and is communicated with the water passage hole.

5. The filtering structure of a water inlet valve according to claim 4, characterized in that: The second filter barrel is a bottomless filter barrel. One end of the sealing plug close to the second filter barrel is detachably connected to the filter bracket, and a support frame is arranged at this end. The support frame is inserted into the secondary water inlet cavity from the bottom side of the second filter barrel to clamp the second filter barrel between the filter bracket and the support frame.

6. The inlet valve filtering structure according to claim 2, characterized in that: An outlet cavity is arranged around the water passage cavity inside the water inlet valve. An outlet passage is arranged in the outlet cavity. The water inlet end of the outlet passage is communicated with the water passage cavity through the water outlet, and the water outlet end of the outlet passage is located on the top side of the outlet cavity and is communicated with the outlet cavity. A back pressure pad is also arranged inside the water inlet valve. The back pressure pad is used to block or open the water outlet so that when the water outlet is blocked, the water inlet end of the outlet passage is separated from the water passage cavity, and when the water outlet is opened, the water inlet end of the outlet passage is communicated with the water passage cavity.

7. The inlet valve filtering structure according to claim 6, characterized in that: An anti-siphon pad is also arranged in the outlet cavity. The anti-siphon pad is located between the water outlet end of the outlet passage and the top wall of the outlet cavity. A plurality of air inlet holes are also arranged on the top wall of the outlet cavity. The air inlet holes are communicated with the outlet cavity and the external air pressure. When the outlet passage discharges water to the outlet cavity, the anti-siphon pad is pushed up by the water pressure to block the air inlet holes. When the outlet passage stops discharging water, the anti-siphon pad falls and blocks the water outlet end of the outlet passage.

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