Axial-flow type check valve

Abstract

The utility model relates to the technical field of valves, and provides an axial-flow type check valve which comprises a check valve body and a sealing mechanism arranged at the two ends of the check valve body, a filtering mechanism comprises a first barrel, an output end inserted into the check valve body, a blocking net arranged in the first barrel, an activated carbon filter net arranged in the first barrel, and a second barrel arranged in the second barrel. The check valve body is arranged on one side of the blocking net, and the fixing mechanism is arranged on the outer side wall of the check valve body. The first barrel is inserted into the check valve body by holding the handle with a hand, the handle is hinged to the interior of the first barrel, impurities in fluid are filtered through the blocking net and the activated carbon filter net, impact force of the fluid is effectively buffered, the use stability of the check valve body is effectively improved, drinking water is kept clean all the time, and the service life of the check valve is prolonged. Secondary pollution caused by backflow water is avoided, the water quality is effectively protected, and therefore the use efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an axial flow check valve. Background Technology

[0002] Axial flow check valves are a type of check valve that are widely used in pipeline systems for conveying oil, gas, water slurry, and acidic corrosive media to prevent backflow of media. Compared with ordinary check valves, they can also eliminate noise, vibration, and reduce water hammer effect.

[0003] For example, CN218954122U discloses an axial flow check valve, which includes a valve body, a guide seat, a limit seat, and a valve disc. The valve disc is slidably disposed in the valve body along the axial direction. The valve body is provided with a valve seat that forms a sealing fit with the valve disc. The valve seat has a flow port in the middle for the medium to pass through. The valve disc is characterized by: the valve disc includes a first valve disc and a second valve disc. The first valve disc is movably connected to the limit seat through a first spring. The second valve disc is movably connected to the limit seat through a second spring. The right end face of the first valve disc is provided with a guide groove. One end of the second valve disc is provided with a boss that fits with the guide groove. The other end of the second valve disc passes through the first valve disc, the limit seat, and the guide seat in sequence and is threadedly connected to a limit block. The side of the first valve disc is provided with a side hole that communicates with the guide groove. When the second valve disc slides axially, it can connect or block the side hole with the flow port.

[0004] However, in implementing the relevant technology, the above-mentioned axial flow check valve has the following problems: it is difficult to filter impurities in the fluid and it is difficult to buffer the impact force of the fluid, resulting in low stability of the check valve, difficulty in ensuring that drinking water remains clean, and it will cause contamination by backflowing impurities. It cannot prevent secondary pollution caused by backflowing water, and cannot protect water quality safety, thus reducing the efficiency of use. Therefore, an axial flow check valve is proposed. Utility Model Content

[0005] This invention proposes an axial flow check valve, which solves the problems in related technologies such as difficulty in filtering impurities in fluids and difficulty in buffering the impact force of fluids, resulting in low stability of check valve use, difficulty in ensuring that drinking water remains clean, and the risk of contamination by backflowing impurities. It also addresses the issues of preventing secondary pollution caused by backflowing water and failing to protect water quality safety.

[0006] The technical solution of this utility model is as follows: An axial flow check valve, comprising:

[0007] Check valve body;

[0008] A sealing mechanism is provided at both ends of the check valve body;

[0009] The filter mechanism is located inside the check valve body and at the output end of the check valve body;

[0010] The filtration mechanism includes:

[0011] One cylinder is inserted into the output end inside the check valve body;

[0012] A baffle net is installed inside the first cylindrical body;

[0013] An activated carbon filter screen is disposed inside the cylinder and located on one side of the baffle screen;

[0014] A fixing mechanism is provided on the outer wall of the check valve body.

[0015] Preferably, the filtration mechanism further includes:

[0016] Two slots are formed opposite to each other on the outer side wall of the cylinder.

[0017] The sealing ring is snapped into the inside of the first slot;

[0018] A handle is movably connected inside the cylinder.

[0019] Preferably, the sealing mechanism includes;

[0020] Two cylindrical bodies are located at both ends of the check valve body and are used to directly connect the check valve body to the connecting pipe.

[0021] The mounting groove is formed at the center of the two outer side walls of the cylinder;

[0022] A hollow rubber chip is snapped into the inside of the mounting slot.

[0023] Preferably, the sealing mechanism further includes:

[0024] Two slots are formed on the outer side wall of the cylinder body and located on both sides of the mounting groove;

[0025] A water-stop strip is wrapped around the inner wall of the second slot.

[0026] Preferably, the fixing mechanism includes:

[0027] A semi-circular slide rail is fixedly installed on the outer side wall of the check valve body;

[0028] The slider is slidably engaged on the semi-circular slide rail;

[0029] The screw is twisted by hand, and the thread runs through one side of the slider.

[0030] Preferably, the fixing mechanism further includes:

[0031] A fixing rod is fixedly connected to the slider;

[0032] The mounting plate is fixedly connected to one end of the fixing rod, and mounting holes are provided at all four corners.

[0033] Preferably, a flange is fixedly installed on the upper part of the outer side wall of the check valve body, and a cover plate is connected to the top of the flange.

[0034] Preferably, flanges are fixedly connected to both ends of the check valve body.

[0035] Preferably, the second flange has a circular groove.

[0036] The working principle and beneficial effects of this utility model are as follows:

[0037] 1. Insert the cylinder into the check valve body by holding the handle and hinge the handle inside the cylinder. The baffle and activated carbon filter are used to filter impurities in the fluid and effectively buffer the impact force of the fluid, which effectively improves the stability of the check valve body and ensures that drinking water is always clean and will not be contaminated by backflow impurities, avoiding secondary pollution caused by backflow water, effectively protecting water quality, and thus improving the efficiency of use.

[0038] 2. By manually rotating the hand-twist screw, the screw rotates on the slider, ensuring that one end of the hand-twist screw does not contact the semi-circular slide rail. At this point, the slider and the semi-circular slide rail become loose. Manually push the semi-circular slide rail, and the slider slides on the semi-circular slide rail. This is used to adjust the position of the mounting plate and the object being installed. After adjusting the installation position, manually rotate the hand-twist screw in the opposite direction to fix the mounting plate in the adjusted position. Insert the fixing screw through the mounting hole and fix it to the object being installed. This effectively improves the stability of the check valve body and prevents the joint between the check valve body and the pipeline from becoming loose. Attached Figure Description

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0040] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0041] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0042] Figure 3 This utility model provides a cross-sectional three-dimensional structural diagram of the second cylindrical body;

[0043] Figure 4 This invention provides a cross-sectional three-dimensional structural diagram of the check valve body.

[0044] In the diagram: 1. Check valve body;

[0045] 2. Sealing mechanism; 21. Second cylinder; 22. Mounting groove; 23. Rubber hollow chip; 24. Second slot; 25. Waterstop strip;

[0046] 3. Filtration mechanism; 31. Cylinder body 1; 32. Slot 1; 33. Sealing ring; 34. Handle; 35. Activated carbon filter screen; 36. Baffle screen;

[0047] 4. Fixing mechanism; 41. Semi-circular slide rail; 42. Slider; 43. Hand-twisted screw; 44. Fixing rod; 45. Mounting plate;

[0048] 5. Flange 1; 6. Cover plate; 7. Flange 2; 8. Circular groove. Detailed Implementation

[0049] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0050] Example 1

[0051] Please see Figure 1 - Figure 4 An axial flow check valve includes a check valve body 1 and a filter mechanism 3, which is disposed inside the check valve body 1 and located at the output end of the check valve body 1.

[0052] The filter mechanism 3 includes a cylinder 31, an output end inserted into the body of the check valve 1, a baffle 36 disposed inside the cylinder 31, an activated carbon filter 35 disposed inside the cylinder 31 and located on one side of the baffle 36, the filter mechanism 3 also includes two slots 32, which are opened opposite each other on the outer side wall of the cylinder 31, a sealing ring 33, which is snapped into the inside of the slots 32, and a handle 34, which is movably connected inside the cylinder 31.

[0053] The present invention provides an axial flow check valve. When in use, the handle 34 is held and the cylinder 31 is inserted into the inside of the check valve body 1. The handle 34 is hinged inside the cylinder 31. The baffle 36 and the activated carbon filter 35 are used to filter the fluid and effectively buffer the impact force of the fluid, thereby effectively improving the stability and efficiency of the check valve body 1.

[0054] When cleaning or replacing, simply hold handle 34 and pull cylinder 31 out from inside check valve body 1.

[0055] Furthermore, a flange 5 is fixedly installed on the upper side of the outer wall of the check valve body 1, and a cover plate 6 is connected to the top of the flange 5. Both ends of the check valve body 1 are fixedly connected to flanges 7, and circular grooves 8 are opened on flanges 7.

[0056] Specifically, the interior of the circular groove 8 is used to snap on the sealing ring, and the effective flange 2 7 provides a better leak-proof effect after being connected to the pipe flange.

[0057] Example 2

[0058] Based on Embodiment 1, this embodiment includes: a sealing mechanism 2, which is disposed at both ends of the check valve body 1. The sealing mechanism 2 includes two cylindrical bodies 21, which are disposed at both ends of the check valve body 1 and are used to directly connect the check valve body 1 to the connecting pipe; an installation groove 22, which is opened at the center of the outer wall of the cylindrical body 21; and a rubber hollow chip 23, which is snapped into the inside of the installation groove 22. The sealing mechanism 2 also includes two slots 24, which are opened on the outer wall of the cylindrical body 21 and located on both sides of the installation groove 22; and a water-stop strip 25, which is wrapped around the inner wall of the slot 24.

[0059] The technical solution provided in this embodiment is as follows: During installation, firstly, wrap the water-stop strip 25 inside the slot 24 and snap the rubber hollow chip 23 into the mounting groove 22. Then, insert both ends of the cylinder 21 into the connecting pipe between the check valve body 1 and the external pipeline, so that the flange contacts the rubber hollow chip 23. At this time, the installation is complete. The water-stop strip 25 expands when it comes into contact with water, which can seal the gap between the check valve body 1 and the external pipeline, thus playing a good role in preventing leakage.

[0060] Example 3

[0061] Based on Embodiment 1, this embodiment includes: a fixing mechanism 4, which is disposed on the outer side wall of the check valve body 1. The fixing mechanism 4 includes a semi-circular slide rail 41, which is fixedly installed on the outer side wall of the check valve body 1; a slider 42, which is slidably engaged on the semi-circular slide rail 41; and a hand-twisting screw 43, which is threaded through one side of the slider 42. The fixing mechanism 4 also includes a fixing rod 44, which is fixedly connected to the slider 42.

[0062] Mounting plate 45 is fixedly connected to one end of fixing rod 44, and mounting holes are provided at all four corners.

[0063] The technical solution provided in this embodiment is as follows: When it is necessary to fix the check valve body 1 to an external object during use, firstly, manually rotate the hand-twist screw 43. The hand-twist screw 43 rotates on the slider 42 so that one end of the hand-twist screw 43 does not abut against the semi-circular slide rail 41. At this time, the slider 42 and the semi-circular slide rail 41 become loose. Manually push the semi-circular slide rail 41, and the slider 42 slides on the semi-circular slide rail 41 to adjust the position of the mounting plate 45 and the object to be installed. After adjusting the installation position, manually rotate the hand-twist screw 43 in the opposite direction to fix the mounting plate 45 in the adjusted position. Then, insert the fixing screw through the mounting hole and fix it to the object to be installed, thereby achieving the purpose of fixing the check valve body 1 to the external object.

[0064] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An axial flow check valve, characterized in that, include: Check valve body (1); A sealing mechanism (2) is provided at both ends of the check valve body (1); The filter mechanism (3) is located inside the check valve body (1) and at the output end of the check valve body (1); The filtration mechanism (3) includes: The cylinder (31) is inserted into the output end inside the check valve body (1); A baffle (36) is disposed inside the first cylinder (31); An activated carbon filter screen (35) is disposed inside the first cylinder (31) and located on one side of the baffle screen (36); The fixing mechanism (4) is provided on the outer wall of the check valve body (1).

2. The axial flow check valve according to claim 1, characterized in that, The filtration mechanism (3) also includes: Two slots (32) are formed opposite to each other on the outer side wall of the cylindrical body (31); The sealing ring (33) is snapped into the inside of the slot (32); The handle (34) is movably connected inside the cylinder (31).

3. The axial flow check valve according to claim 1, characterized in that, The sealing mechanism (2) includes; Two cylindrical bodies (21) are set at both ends of the check valve body (1) for inserting the check valve body (1) directly into the connecting pipe; The mounting groove (22) is formed at the center of the outer side wall of the second cylinder (21); The rubber hollow chip (23) is snapped into the inside of the mounting slot (22).

4. An axial flow check valve according to claim 3, characterized in that, The sealing mechanism (2) also includes: Two slots (24) are formed on the outer side wall of the cylindrical body (21) and located on both sides of the mounting slot (22); A water-stop strip (25) is wrapped around the inner wall of the second slot (24).

5. An axial flow check valve according to claim 1, characterized in that, The fixing mechanism (4) includes: A semi-circular slide rail (41) is fixedly installed on the outer side wall of the check valve body (1); The slider (42) is slidably engaged on the semi-circular slide rail (41); The hand-twisted thread (43) passes through one side of the slider (42).

6. An axial flow check valve according to claim 5, characterized in that, The fixing mechanism (4) also includes: A fixing rod (44) is fixedly connected to the slider (42); The mounting plate (45) is fixedly connected to one end of the fixing rod (44), and mounting holes are provided at all four corners.

7. An axial flow check valve according to claim 1, characterized in that: A (5) is fixedly installed on the upper side of the outer wall of the check valve body (1), and a cover plate (6) is connected to the top of the flange (5).

8. An axial flow check valve according to claim 1, characterized in that: Both ends of the check valve body (1) are fixedly connected to flange two (7).

9. An axial flow check valve according to claim 8, characterized in that: A circular groove (8) is provided on the flange 2 (7).

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