Check valve with filtering function

Abstract

The utility model relates to a check valve with a filtering function, which comprises a valve body provided with a water inlet channel, a water outlet channel and a filtering channel communicated with the water inlet channel and the water outlet channel. The non-return core is mounted in the water inlet channel; the filtering assembly is installed in the filtering channel and used for filtering water flow passing through the valve body; the water outlet channel and the filtering channel are coaxially arranged, and the water inlet channel is located on the side portion of the filtering channel and forms an angle with the filtering channel. And when the filtering assembly is mounted in the filtering channel, the non-return core is opened. Compared with the prior art, the non-return valve has the advantages that the state of the non-return core is controlled through the filtering assembly, it is guaranteed that water can enter the valve body only when the filtering assembly is accurately installed, and it is guaranteed that no impurity exists in the valve body when water passes through the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to a non-return valve with filtering. Background Art

[0002] A valve is a mechanical device that controls the flow rate, direction, pressure, temperature, etc. of a flowing medium. It is a basic component in a pipeline system. A check valve is a valve that has a circular disc as the opening and closing part and blocks the backflow of the medium by its own weight and the pressure of the medium.

[0003] The check valve is mainly composed of a valve body, a rocker, a valve cover, a valve seat, a sealing seat, etc. When working, water pushes open the valve cover under a certain pressure and flows out from the outlet. When the water pressure suddenly decreases, the valve cover, driven by the rocker, automatically covers the valve seat to play a sealing role, so that the water will not flow back.

[0004] The existing check valve can only control the one-way flow of liquid in the pipeline. However, when the liquid contains a lot of impurities, the check valve has problems such as poor sealing. For the chemical industry, such a check valve with insufficient sealing has a great safety hazard.

[0005] The Chinese utility model patent with authorization announcement number CN208311568U discloses a filtering check valve, including a valve body and a valve bonnet, the valve body is provided with an opening for installing the valve bonnet, the valve body is provided with a first port flush with the opening, and a valve body channel is formed between the first port and the opening, and a second port inclined to the channel is provided on the valve wall of the valve body; a plugging cap with a filter screen is installed on the second port, and the filter screen is located on the valve body channel and blocks the valve body channel; a valve stem is connected to the center of the valve bonnet, and a gasket is installed on the valve stem, and the gasket conflicts with the sealing surface of the valve body; the beneficial effects of the utility model are: a filtering device is added at the front end of the check function, so that the filtering function and the check function are combined on one valve body, and impurities are removed at the front end to purify the water quality, thereby improving the sealing performance and service life of the check valve.

[0006] However, in the check valve, the filter device and the one-way valve device are independently arranged. When the filter device is disassembled for cleaning, the check valve can still be used, which may cause the user to forget to reinstall the filter device and continue to use the check valve, resulting in impurities remaining in the check valve. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides a check valve with filtering.

[0008] The above-mentioned problem of the utility model is solved by the following technical solutions:

[0009] A check valve with filtration, comprising:

[0010] A valve body, which is provided with a water inlet channel, a water outlet channel, and a filtration channel communicating with the water inlet channel and the water outlet channel;

[0011] A check core, installed in the water inlet channel;

[0012] A filtration component, installed in the filtration channel, for filtering the water flow passing through the valve body;

[0013] The water outlet channel and the filtration channel are coaxially arranged, and the water inlet channel is located at the side of the filtration channel, and is arranged at an angle with the filtration channel;

[0014] When the filtration component is installed into the filtration channel, the check core is opened.

[0015] The further setting of the above technical solution is: the check core includes a valve rod movably arranged, and the head of the valve rod can extend into the filtration channel;

[0016] The outer wall of the filtration component can push the end of the valve rod out of the filtration channel.

[0017] The further setting of the above technical solution is: an elastic holding member is provided at the tail of the valve rod, and the elastic holding member holds the valve rod towards the side of the filtration channel.

[0018] The further setting of the above technical solution is: the filtration component includes a core shell having a filtration cavity, and the gap between the core shell and the inner wall of the filtration channel is greater than the length of the valve rod extending into the filtration channel.

[0019] The further setting of the above technical solution is: the core shell includes a head shell and a tail shell which are inserted into each other, and the head shell and the tail shell are inserted to form a filtration cavity capable of accommodating a filter element;

[0020] The outer periphery of the head shell pushes out the valve rod.

[0021] The further setting of the above technical solution is: the head of the head shell is set as a reduced diameter part, and an inclined guiding surface is arranged between the head shell and the main body part of the head shell.

[0022] The further setting of the above technical solution is: the check core further includes a valve core, and a water passing hole is arranged on the side of the valve core facing the filtration channel, and a plug is provided on the valve rod to block the water passing hole.

[0023] The further setting of the above technical solution is: a retaining ring is arranged in the inner cavity of the valve core, one end of the elastic holding member holds the plug, and the other end holds the end of the retaining ring;

[0024] A relief hole capable of accommodating the extension of the valve rod is arranged on the retaining ring.

[0025] A further setting of the above technical solution is that a first sealing ring is provided on the plug.

[0026] A further setting of the above technical solution is that the filtering channel and the water inlet channel are vertically arranged.

[0027] Compared with the prior art, the beneficial effect of the present utility model lies in that the state of the check valve core is controlled by the filtering component, ensuring that water can only enter when the filtering component is accurately installed, and ensuring that there are no impurities inside the valve body when water passes through. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded structural schematic diagram of the present utility model.

[0029] Figure 2 It is a schematic diagram of the installation direction of the filtering component and the check valve core.

[0030] Figure 3 It is a sectional structural schematic diagram when the filtering component is installed in place.

[0031] Figure 4 It is a sectional structural schematic diagram when the filtering component is not installed.

[0032] Figure 5 It is a structural schematic diagram of the head shell.

[0033] Marked on the drawings: 100, valve body; 101, water inlet channel; 102, water outlet channel; 103, filtering channel;

[0034] 200, filtering component; 201, filtering cavity; 210, head shell; 220, tail shell; 230, filter element; 211, guiding surface; 212, reduced diameter part; 213, main body part;

[0035] 300, check valve core; 310, valve stem; 311, plug; 320, elastic holding member; 330, first housing; 340, second housing; 331, water passing hole; 341, retaining ring; 350, first sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0037] As Figures 1-5 shown, this embodiment discloses a check valve with filtering, including

[0038] A valve body 100 is provided with a water inlet passage 101, a water outlet passage 102, and a filtering passage 103 communicating with the water inlet passage 101 and the water outlet passage 102;

[0039] A check valve core 300 is installed in the water inlet passage 101;

[0040] A filtering assembly 200 is installed in the filtering passage 103 for filtering the water flow passing through the valve body 100;

[0041] The water outlet passage 102 and the filtering passage 103 are coaxially arranged, and the water inlet passage 101 is located at the side of the filtering passage 103 and is arranged at an angle with the filtering passage 103;

[0042] When the filtering assembly 200 is installed into the filtering passage 103, the filtering assembly 200 is opened.

[0043] The above is the basic solution of this embodiment.

[0044] Preferably, in this embodiment, the filtering passage 103 and the water inlet passage 101 are vertically arranged.

[0045] Specifically referring to Figure 1 and Figure 2 As shown, the valve body 100 is arranged in a T shape. The water outlet passage 102 and the filtering passage 103 are arranged on the same straight line, that is, the water outlet and the installation opening of the filtering assembly 200 are two opposite openings; the water inlet passage 101 is arranged on the side and is connected to the filtering passage 103; water first enters the filtering passage 103 from the water inlet passage 101 through the check valve core 300, and after being filtered, is output from the water outlet passage 102, and impurities and the like are left in the filtering assembly 200;

[0046] When replacing the filtering assembly 200, the check valve core 300 is in a closed state. When water enters the water inlet passage 101, it is blocked by the check valve core 300 and cannot enter the filtering passage 103, and thus cannot be output from the water outlet passage 102;

[0047] When the filtering assembly 200 is accurately installed in the filtering passage 103, the check valve core 300 can be driven to open the check valve core 300 so that the water inlet passage 101 can smoothly intake water.

[0048] Compared with the prior art, in the setting of this embodiment, the state of the check valve core 300 is controlled by the filtering assembly 200, ensuring that water can only enter when the filtering assembly 200 is ready to be installed, and ensuring that there are no impurities inside the valve body 100 when passing water.

[0049] In this embodiment, the driving mode of the check valve core 300 by the filtering component 200 is specifically set as follows: The check valve core 300 includes a valve stem 310 movably arranged, and the head of the valve stem 310 can extend into the filtering channel 103;

[0050] The outer wall of the filtering component 200 can push the end of the valve stem 310 out of the filtering channel 103.

[0051] Specifically refer to Figure 3 and Figure 4 As shown, when the filtering component 200 is not installed, the head of the valve stem 310 extends into the filtering channel 103. At this time, the check valve core 300 is in a closed state, and the water inlet channel 101 cannot input water flow into the filtering channel 103;

[0052] When the filtering component 200 is installed in the filtering channel 103, the filtering component 200 pushes against the end of the valve stem 310 in the filtering channel 103, causing the valve stem 310 to retract toward the water inlet channel 101 side. Thus, the check valve core 300 opens.

[0053] In order to enable the valve stem 310 to expand and contract, in this embodiment, an elastic abutting member 320 is provided at the tail of the valve stem 310, and the elastic abutting member 320 abuts the valve stem 310 toward the filtering channel 103 side.

[0054] Preferably, in this embodiment, the elastic abutting member 320 is a spring.

[0055] The elastic abutting member 320 abuts against the tail of the valve stem 310, causing the valve stem 310 to have a tendency to move toward the filtering channel 103 side. That is, when not abutted by the filtering component 200, the end of the valve stem 310 can extend into the filtering channel 103.

[0056] In this embodiment, the specific implementation manner of the filtering component 200 is as follows: The filtering component 200 includes a core shell having a filtering cavity 201, and the gap between the core shell and the inner wall of the filtering channel 103 is greater than the length of the valve stem 310 extending into the filtering channel 103.

[0057] With such a setting, it can be ensured that when the filtering component 200 is installed in the filtering channel 103, the end of the valve stem 310 can be pushed out of the filtering channel 103, so as to open the check valve.

[0058] In this embodiment, the core shell includes a head shell 210 and a tail shell 220 that are inserted into each other, and the head shell 210 and the tail shell 220 are inserted to form a filtering cavity 201 that can accommodate the filter element 230;

[0059] The outer periphery of the head shell 210 pushes out the valve stem 310.

[0060] Specifically refer toFigure 1 As shown in the figure, the head shell 210 and the tail shell 220 are inserted into each other to form a complete core shell. At the same time, a plurality of hollow openings are provided on the core shell, enabling water flow to enter the filter element 230 in the filter cavity 201 for filtration;

[0061] When replacing the filter element 230, the core shell is removed from the valve body 100, and then the head shell 210 and the tail shell 220 are disassembled.

[0062] In this embodiment, the water inlet passage 101 is connected to the position of the filter passage 103 close to the water outlet passage 102, and the position of the head shell 210 corresponds to the output position of the water inlet passage 101. Thus, when the head shell 210 is installed in place, the valve stem 310 can be pushed out, ensuring that the water flow has passed through the filter assembly 200 when entering the water outlet passage 102.

[0063] In this embodiment, the head of the head shell 210 is provided as a reduced diameter portion 212, and an inclined guiding surface 211 is provided between the reduced diameter portion 212 and the main body portion 213 of the head shell 210.

[0064] Specifically referring to Figure 5 As shown in the figure, the head shell 210 includes a front reduced diameter portion 212 and a rear main body portion 213. The diameter of the main body is larger than the diameter of the reduced diameter portion 212, and the two are connected by an inclined guiding surface 211;

[0065] During the installation of the filter assembly 200, first, the reduced diameter portion 212 is inserted into the filter passage 103. Since the diameter of the reduced diameter portion 212 is small, it cannot hold the valve stem 310. When the guiding surface 211 reaches the position where the valve stem 310 extends, the end of the valve stem 310 contacts the guiding surface 211 and is held by the guiding surface 211. As the filter assembly 200 is inserted further, the main body portion 213 reaches the position where the valve stem 310 extends, holding the valve stem 310, and completing the installation of the filter assembly 200 while fully opening the check valve core 300.

[0066] In this embodiment, the specific implementation of the check valve core 300 is as follows: the check valve core 300 further includes a valve core, and a water passing hole 331 is provided on the side of the valve core facing the filter passage 103. A plug 311 is provided on the valve stem 310 to block the water passing hole 331.

[0067] Specifically referring to Figure 4 As shown in the figure, the plug 311 is formed on the valve stem 310. When the valve stem 310 moves toward the side of the filter passage 103, the plug 311 blocks the opening position of the water passing hole 331, preventing water flow from passing through;

[0068] When the filtering component 200 ejects the valve stem 310 from the filtering channel 103, the valve stem 310 moves towards the side away from the filtering channel 103. At this time, the plug 311 disengages from the opening position of the water passing hole 331, so that the water passing hole 331 is opened and water flow can pass through.

[0069] Specifically, in this embodiment, for the convenience of assembly, the valve core is formed by combining a first housing 330 and a second housing 340 which are inserted into each other; the water passing hole 331 is opened on the first housing 330.

[0070] In this embodiment, a retaining ring 341 is provided in the inner cavity of the valve core. One end of the elastic holding member 320 holds the plug 311, and the other end holds the end of the retaining ring 341;

[0071] The retaining ring 341 is provided with an avoidance hole capable of accommodating the extension of the valve stem 310.

[0072] When the valve stem 310 retracts into the check valve core 300 under the action of the filtering component 200, the tail of the valve stem 310 can extend out from the avoidance hole.

[0073] To ensure the sealing effect of the check valve core 300 in the closed state, a first sealing ring 350 is provided on the plug 311.

[0074] An interference fit is formed between the first sealing ring 350 and the water passing hole 331, thus ensuring the sealing effect.

[0075] In this embodiment, the structure and usage mode of the check valve core 300 are the same as those of the check structure in the prior art, and will not be elaborated here.

[0076] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to form equivalent embodiments with equivalent changes, but as long as the technical content of the present invention is not departed from, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A check valve with filtration, characterized in that: include, A valve body (100) is provided with a water inlet channel (101) and a water outlet channel (102), and a filtering channel (103) connected to the water inlet channel (101) and the water outlet channel (102); A check core (300) is installed in the water inlet channel (101); A filter assembly (200) is installed in the filter channel (103) and is used to filter the water flowing through the valve body (100); The water outlet channel (102) and the filter channel (103) are coaxially arranged, and the water inlet channel (101) is located on the side of the filter channel (103) and is arranged at an angle to the filter channel (103); When the filter assembly (200) is installed in the filter channel (103), the check core (300) is opened.

2. The check valve with filter according to claim 1, characterized in that: The check core (300) comprises a movably arranged valve stem (310), and the head of the valve stem (310) can extend into the filter channel (103); The outer wall of the filter assembly (200) is capable of pushing the end of the valve stem (310) out of the filter channel (103).

3. The check valve with filter according to claim 2, characterized in that: An elastic supporting member (320) is provided at the tail of the valve stem (310), and the elastic supporting member (320) supports the valve stem (310) toward one side of the filtering channel (103).

4. The check valve with filter according to claim 3, characterized in that: The filter assembly (200) comprises a core shell having a filter cavity (201), and the gap between the core shell and the inner wall of the filter channel (103) is greater than the length of the valve stem (310) extending into the filter channel (103).

5. The check valve with filter according to claim 4, characterized in that: The core shell comprises a head shell (210) and a tail shell (220) which are plugged into each other, and the head shell (210) and the tail shell (220) are plugged into each other to form a filter cavity (201) capable of accommodating the filter element (230); The outer periphery of the head shell (210) pushes out the valve stem (310).

6. The check valve with filter according to claim 5, characterized in that: The head of the head shell (210) is configured as a constricted portion (212), and an inclined guide surface (211) is provided between the head and the main body (213) of the head shell (210).

7. The check valve with filter according to claim 3, characterized in that: The check core (300) further comprises a valve core, a water hole (331) is arranged on the side of the valve core facing the filter channel (103), and a plug (311) is arranged on the valve stem (310) to block the water hole (331).

8. The check valve with filter according to claim 7, characterized in that: A stop ring (341) is provided in the inner cavity of the valve core, one end of the elastic supporting member (320) is supported by a plug (311), and the other end is supported on the end of the stop ring (341); The stop ring (341) is provided with a relief hole capable of accommodating the extension of the valve stem (310).

9. The check valve with filter according to claim 8, characterized in that: The plug (311) is provided with a first sealing ring (350).

10. The check valve with filter according to claim 1, characterized in that: The filtering channel (103) and the water inlet channel (101) are arranged vertically.

Images