One-way valve reliable in connection

Abstract

The utility model relates to the technical field of one-way valves, in particular to a reliably-connected one-way valve which comprises a valve casing, a liquid inlet connector is arranged at one end of the valve casing in a penetrating mode, the connection position of the liquid inlet connector and the valve casing is fixed through welding, and liquid outlet connectors are arranged on the two sides of the outer wall of the valve casing in a penetrating mode. The joint position of the liquid outlet connector and the valve shell is fixed through welding. A transition connector is arranged at the end of the liquid outlet connector, an external connector is arranged at the other end of the transition connector, and the two ends of the transition connector are slidably connected with the inner wall of the liquid outlet connector and the inner wall of the external connector in a sleeved mode respectively. Liquid is conveyed through the liquid inlet connector, sufficient pressure is given to the liquid inlet connector, the valve element is pushed by the liquid inlet connector to compress the spring, the valve element can move towards one end of the spring, the via hole is communicated with the liquid outlet connector, liquid discharging is achieved, when backflow occurs, the pressure given by the valve element disappears, the spring resets, the valve element moves back, the via hole and the liquid outlet connector are staggered, and therefore non-return is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to a one-way valve with reliable connection. Background Art

[0002] A one-way valve, also known as a check valve or non-return valve, is a valve that only allows fluid to flow in one direction and prevents the fluid from flowing in the opposite direction.

[0003] Its main function is to prevent the medium in the pipeline system from flowing back, protect the safety of the equipment and maintain the normal operation of the system.

[0004] The working principle of a one-way valve is relatively simple: when the fluid flows in the permitted direction, the valve disc is pushed open and the fluid passes through; when the fluid flows in the opposite direction, the valve disc automatically closes to prevent the fluid from passing through.

[0005] It has the following advantages:

[0006] Prevent backflow: The main function of the one-way valve is to prevent the medium from flowing back, protect the safety of equipment and systems, and avoid equipment damage or system failure caused by backflow;

[0007] Simple structure: The structure of the one-way valve is relatively simple, consisting of a valve body, a valve disc and a seal, which is easy to maintain and replace parts;

[0008] High reliability: The design of the one-way valve makes it highly reliable under normal use conditions and can operate stably for a long time.

[0009] One-way valves are widely used in various piping systems, such as water supply systems, drainage systems, HVAC systems, chemical piping systems, etc. One-way valves can often be seen at the outlet of pumps, compressors, and the inlets and outlets of gas or liquid storage tanks.

[0010] At present, the conventional one-way valve structure is located at the liquid outlet end. When connected to an external interface, it generally relies only on an ordinary flange for installation, resulting in the sealing reliability not being guaranteed when connected to the external interface. Therefore, it needs to be improved to improve its connection reliability. Utility Model Content

[0011] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a one-way valve with reliable connection.

[0012] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0013] A one-way valve with reliable connection is designed, comprising a valve housing, one end of which is provided with a liquid inlet interface, and the connection position of the liquid inlet interface and the valve housing is fixed by welding; both sides of the outer wall of the valve housing are provided with liquid outlet interfaces, and the connection position of the liquid outlet interfaces and the valve housing is fixed by welding;

[0014] A transition interface is provided at the end of the liquid outlet interface, and an external interface is provided at the other end of the transition interface. The two ends of the transition interface are respectively slidably connected with the inner wall of the liquid outlet interface and the inner wall of the external interface;

[0015] The valve core is slidably sleeved inside the valve housing, and the valve core is a single-opening sleeve structure. A spring is provided inside the valve housing, and the two ends of the spring are fixedly assembled with the inner wall of the valve housing and the outer wall of the valve core respectively. A through hole is provided on the surface of the valve core, and a limiting groove is provided on the inner wall of the valve housing. A limiting block is fixed on the outer wall of the valve core to slide with the limiting groove.

[0016] Specifically, first extension plates are welded to both sides of the liquid outlet port, and a first threaded column is welded and fixed to the upper end of the first extension plate.

[0017] In detail, first collars are welded on both sides of the lower end of the transition interface, and the inner wall of the first collar penetrates the surface of the first threaded column.

[0018] In detail, the end of the first threaded column is threadedly connected to a first threaded cap, and one side of the first threaded cap is tightly arranged against the surface of the first collar.

[0019] In detail, second connecting plates are welded to both sides of the upper end of the transition interface, and a second threaded column is welded to the upper end of the second connecting plate.

[0020] In detail, a second ring is welded and fixed on both sides of the external interface, and the inner wall of the second ring is penetrated by the second threaded column.

[0021] Specifically, the other end of the second threaded column is threadedly connected to a second threaded cap, and the end surface of the second threaded cap is tightly disposed against the surface of the second collar.

[0022] In detail, both side end faces of the transition interface are provided with annular grooves, the interior of the annular grooves is filled with sealing rings, and the sealing rings are made of water-swelling rubber material. The end faces of the liquid outlet interface and the external interface are respectively tightly arranged with the corresponding sealing rings.

[0023] The design scheme proposed by the utility model has the following beneficial effects during application:

[0024] 1. Liquid is delivered through the liquid inlet interface and sufficient pressure is applied to push the valve core to compress the spring, and the valve core will move toward one end of the spring, so that the through hole is connected with the liquid outlet interface to realize liquid discharge. When backflow occurs, the given pressure disappears, the spring resets, and the valve core moves back, so that the through hole and the liquid outlet interface are staggered, thereby realizing check.

[0025] 2. The transition interface can be used as a transition connection between the liquid outlet interface and the external interface. The corresponding threaded column and the collar are passed through to realize the positioning of the transition interface, the liquid outlet interface and the external interface. The threaded cap is installed on the threaded column to realize the tightening and compaction of the transition interface, the liquid outlet interface and the external interface. The sealing ring can be used to further strengthen the sealing and improve the connection reliability between the liquid outlet interface and the external interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0028] Figure 3 This is an enlarged schematic diagram of point a of the present utility model;

[0029] Figure 4 This is an enlarged schematic diagram of point b of the present utility model;

[0030] Figure 5 This is an enlarged schematic diagram of point c of the present invention.

[0031] In the figure: 10, valve housing; 11, liquid inlet interface; 12, liquid outlet interface; 13, transition interface; 14, external interface; 15, valve core; 16, spring; 17, through hole; 18, limit groove; 19, limit block; 20, first extension plate; 21, first threaded column; 22, first collar; 23, first threaded cap; 30, second connecting plate; 31, second threaded column; 32, second collar; 33, second threaded cap; 40, annular groove; 41, sealing ring. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Reference Figure 1-Figure 5A one-way valve with reliable connection includes a valve housing 10, one end of the valve housing 10 is penetrated by a liquid inlet interface 11, and the connection position of the liquid inlet interface 11 and the valve housing 10 is fixed by welding, and both sides of the outer wall of the valve housing 10 are penetrated by liquid outlet interfaces 12, and the connection position of the liquid outlet interface 12 and the valve housing 10 is fixed by welding;

[0034] A transition interface 13 is provided at the end of the liquid outlet interface 12, and an external interface 14 is provided at the other end of the transition interface 13. The two ends of the transition interface 13 are respectively slidably connected to the inner wall of the liquid outlet interface 12 and the inner wall of the external interface 14;

[0035] A valve core 15 is slidably sleeved inside the valve housing 10, and the valve core 15 is a single-opening sleeve structure. A spring 16 is provided inside the valve housing 10, and the two ends of the spring 16 are fixedly assembled with the inner wall of the valve housing 10 and the outer wall of the valve core 15 respectively. A through hole 17 is provided on the surface of the valve core 15, and a limiting groove 18 is provided on the inner wall of the valve housing 10. A limiting block 19 is fixed on the outer wall of the valve core 15 to slide with the limiting groove 18.

[0036] It should be further explained that first extension plates 20 are welded to both sides of the liquid outlet port 12 , and a first threaded column 21 is welded and fixed to the upper end of the first extension plate 20 .

[0037] It should be further explained that first collars 22 are welded on both sides of the lower end of the transition interface 13 , and the inner wall of the first collar 22 penetrates the surface of the first threaded column 21 , so as to realize rapid positioning of the liquid outlet interface 12 and the transition interface 13 .

[0038] It should be further explained that the end of the first threaded column 21 is threadedly connected to a first threaded cap 23 , and one side of the first threaded cap 23 is tightly arranged against the surface of the first collar 22 , which can achieve stable assembly of the liquid outlet interface 12 and the transition interface 13 .

[0039] It should be further explained that, second connecting plates 30 are welded to both sides of the upper end of the transition interface 13 , and second threaded columns 31 are welded to the upper ends of the second connecting plates 30 .

[0040] It should be further explained that a second collar 32 is welded and fixed on both sides of the external interface 14 , and the inner wall of the second collar 32 and the second threaded column 31 are penetrated, which can facilitate the rapid positioning of the external interface 14 and the transition interface 13 .

[0041] It should be further explained that the other end of the second threaded column 31 is threadedly connected to a second threaded cap 33 , and the end surface of the second threaded cap 33 is tightly arranged against the surface of the second collar 32 , which can achieve stable connection between the external interface 14 and the transition interface 13 .

[0042] It should be further explained that an annular groove 40 is provided on both side end faces of the transition interface 13, and the interior of the annular groove 40 is filled with a sealing ring 41. The sealing ring 41 is made of a rubber material that expands when exposed to water. The end face of the liquid outlet interface 12 and the end face of the external interface 14 are respectively tightly arranged with the corresponding sealing ring 41, so that the connection positions between the transition interface 13 and the liquid outlet interface 12 and the external interface 14 can be sealed and strengthened.

[0043] Working method: When the liquid outlet interface 12, the transition interface 13 and the external interface 14 need to be connected, first insert one end of the transition interface 13 into the liquid outlet interface 12. At this time, the first threaded column 21 passes through the first collar 22 to realize the rapid positioning of the transition interface 13 and the liquid outlet interface 12. The first threaded cap 23 and the first threaded column 21 are threadedly connected to each other, so that the transition interface 13 and the liquid outlet interface 12 can be fixed. Then, the external interface 14 is slidably connected to the other end of the transition interface 13. At this time, the second threaded column 31 passes through the second collar 32 to realize the rapid positioning of the transition interface 13 and the external interface 14. The second threaded cap 33 and the second threaded column 31 are threadedly connected to each other, so that the transition interface 13 and the external interface 14 can be fixed. The sealing rings 41 distributed on both sides of the transition interface 13 can be used for auxiliary sealing reinforcement.

[0044] When the liquid inlet interface 11 delivers liquid, sufficient pressure is applied to impact the valve core 15 toward one end of the spring 16. The valve core 15 compresses the spring 16 and moves, so that the through hole 17 is connected with the liquid outlet interface 12, thereby realizing one-way liquid delivery. The limit block 19 slides in the limit groove 18, thereby realizing stable sliding of the valve core 15.

[0045] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A one-way valve with reliable connection, comprising a valve housing (10), characterized in that: One end of the valve housing (10) is provided with a liquid inlet interface (11), and the connection position between the liquid inlet interface (11) and the valve housing (10) is fixed by welding; both sides of the outer wall of the valve housing (10) are provided with liquid outlet interfaces (12), and the connection position between the liquid outlet interfaces (12) and the valve housing (10) is fixed by welding; A transition interface (13) is provided at the end of the liquid outlet interface (12), an external interface (14) is provided at the other end of the transition interface (13), and both ends of the transition interface (13) are respectively slidably connected to the inner wall of the liquid outlet interface (12) and the inner wall of the external interface (14); The valve housing (10) is internally slidably sleeved with a valve core (15), and the valve core (15) is a single-opening sleeve structure. A spring (16) is provided inside the valve housing (10), and the two ends of the spring (16) are respectively fixedly assembled with the inner wall of the valve housing (10) and the outer wall of the valve core (15). A through hole (17) is provided on the surface of the valve core (15), and a limiting groove (18) is provided on the inner wall of the valve housing (10). A limiting block (19) is fixed on the outer wall of the valve core (15) and is slidably arranged with the limiting groove (18).

2. A one-way valve with reliable connection according to claim 1, characterized in that: A first extension plate (20) is welded to both sides of the liquid outlet interface (12), and a first threaded column (21) is welded and fixed to the upper end of the first extension plate (20).

3. A one-way valve with reliable connection according to claim 2, characterized in that: A first collar (22) is welded to both sides of the lower end of the transition interface (13), and the inner wall of the first collar (22) is penetrated by the surface of the first threaded column (21).

4. A one-way valve with reliable connection according to claim 3, characterized in that: The end of the first threaded column (21) is threadedly connected to a first threaded cap (23), and one side of the first threaded cap (23) is tightly arranged on the surface of the first collar (22).

5. A one-way valve with reliable connection according to claim 1, characterized in that: Second connecting plates (30) are welded to both sides of the upper end of the transition interface (13), and a second threaded column (31) is welded to the upper end of the second connecting plate (30).

6. A one-way valve with reliable connection according to claim 5, characterized in that: A second collar (32) is welded and fixed on both sides of the external interface (14), and the inner wall of the second collar (32) and the second threaded column (31) are interpenetratingly arranged.

7. A one-way valve with reliable connection according to claim 6, characterized in that: The other end of the second threaded column (31) is threadedly connected to a second threaded cap (33), and the end surface of the second threaded cap (33) is tightly arranged on the surface of the second collar (32).

8. The one-way valve with reliable connection according to claim 1, characterized in that: Both end faces of the transition interface (13) are provided with annular grooves (40), the interior of the annular grooves (40) is filled with sealing rings (41), and the sealing rings (41) are made of a water-swelling rubber material. The end faces of the liquid outlet interface (12) and the external interface (14) are respectively tightly arranged with the corresponding sealing rings (41).

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