Adjustable check valve

Abstract

The utility model discloses an adjustable check valve which comprises a valve seat, a valve element is arranged in the valve seat, a valve cover is detachably and fixedly connected to the top of the valve seat, a guide column is fixedly connected to the top of the valve element, a sliding groove is formed in the valve cover, and the guide column penetrates through and is connected into the sliding groove in a sliding mode. A first spring is arranged outside the guide column in a sleeving mode, a guide sleeve is fixedly connected to the top of the sliding groove, a sliding plate is further slidably connected into the sliding groove, a second spring is fixedly connected to the bottom of the sliding plate, a lifting column is rotatably connected to the sliding plate, and a top plate is fixedly connected to the top of the guide sleeve; one end of the lifting column penetrates out of the top plate, and a rotary adsorption assembly is arranged outside the lifting column. The lifting column is rotated, the second spring abuts against the top of the guide column through adjustment of the rotary adsorption assembly, and therefore the jacking pressure of the valve element can be increased in the mode that the second spring is arranged outside the guide column.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and in particular to an adjustable check valve. Background Art

[0002] A check valve, also known as a one-way valve or a non-return valve, prevents the internal fluid medium from flowing back by setting an opening and closing part, thereby achieving a one-way flow of the internal fluid medium.

[0003] In the prior art, a Chinese patent with the announcement number CN203395300U discloses a valve, particularly a double-sealed check valve. The specific technical solution is as follows: a double-sealed check valve, comprising a valve body, a medium inlet channel, a medium outlet channel and a connecting chamber provided in the valve body, a valve core and a valve stem for driving the valve core being provided in the connecting chamber, the connecting chamber being perpendicular to the medium inlet channel, and the connection between the medium inlet channel and the connecting chamber being lower than the connection between the medium outlet channel and the connecting chamber, a valve seat sealed with the valve core being provided at the edge of the connecting chamber, a sealing member being provided between the valve core and the valve seat, the valve core being in the form of a rectangular block, an annular notch for placing the valve core being provided on the inner wall of the valve seat, a sealing member placement chamber being provided in the transverse middle portion of the valve core, a sealing member being provided in the sealing member placement chamber for sealing with the inner wall of the notch, and a sealing block being provided on the end face of the valve core facing the bottom of the notch for hard sealing with the bottom of the notch.

[0004] The check valve in this patent has the same structure as most check valves in the prior art, and only has one spring for opening and closing the valve core. If it is necessary to increase the pressure of the valve core and increase the spring, there will be corresponding inconvenience. Utility Model Content

[0005] The utility model aims to solve the technical problem that the check valve in the prior art has only one spring for opening and closing the valve core, and if it is necessary to increase the pressure of the valve core and the spring, there will be corresponding inconvenience. The utility model provides an adjustable check valve.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an adjustable check valve, comprising a valve seat, a valve core is provided in the valve seat, the top of the valve seat is detachably fixedly connected to a valve cover, the top of the valve core is fixedly connected to a guide column, a slide groove is provided in the valve cover, the guide column passes through and is slidably connected in the slide groove, the outer sleeve of the guide column is provided with a first spring, the top of the slide groove is fixedly connected to the guide sleeve, the slide groove is also slidably connected to a slide plate, the bottom of the slide plate is fixedly connected to a second spring, a lifting column is rotatably connected to the slide plate, the top of the guide sleeve is fixedly connected to a top plate, one end of the lifting column passes through to the outside of the top plate, and a rotating adsorption component is provided on the outside of the lifting column.

[0007] Preferably, the rotary adsorption assembly includes a fixed plate fixedly connected to the outside of the lifting column and a positioning protrusion fixedly connected to the outside of the fixed plate, the top of the top plate is provided with an entrance, the inner top of the top plate is provided with a positioning port, and a magnet is fixedly connected in the positioning port.

[0008] Preferably, a positioning column is fixedly connected to the top plate, and a positioning groove is provided at the bottom of the fixed plate at a position corresponding to the positioning column.

[0009] Preferably, a rotating handle is fixedly connected to the top of the lifting column.

[0010] Preferably, at least one second spring is provided, and the second spring is detachably fixedly connected to the slide plate.

[0011] Preferably, a contact plate is fixedly connected to the bottom of the second spring.

[0012] Preferably, a sealing ring is provided between the valve cover and the valve seat, and both ends of the valve seat are fixedly connected with connecting flanges.

[0013] The beneficial effects of the present invention are as follows: compared with the prior art, when the valve seat is installed on the water pipe, when the liquid pressure reaches a set value, it will resist the upward movement of the valve core. After the valve core moves upward, the valve seat is opened, thereby realizing the flow of liquid; if after long-term use, the elastic force of the first spring is weak or the pressure to lift the valve core needs to be increased, the lifting column is rotated, and the second spring is allowed to resist the top of the guide column by adjusting the rotary adsorption component. In this way, the lifting pressure of the valve core can be increased by arranging the second spring outside the guide column. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of area A in the middle;

[0017] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0018] Figure 5 This is a schematic diagram of the top structure of the top plate in the utility model.

[0019] The markings in the figure are: 1. Valve seat; 2. Valve cover; 3. Valve core; 4. First spring; 5. Guide column; 6. Slide groove; 7. Slide plate; 8. Second spring; 9. Contact plate; 10. Guide sleeve; 11. Lifting column; 12. Fixed plate; 13. Positioning protrusion; 14. Positioning groove; 15. Positioning column; 16. Top plate; 17. Positioning port; 18. Magnet; 19. Entrance port. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example: As shown in the attached Figures 1 to 5 An adjustable check valve is shown, comprising a valve seat 1, a valve core 3 being provided inside the valve seat 1, a valve cover 2 being detachably and fixedly connected to the top of the valve seat 1, a sealing ring being provided between the valve cover 2 and the valve seat 1, connecting flanges being fixedly connected at both ends of the valve seat 1, and the valve core 3 being used to open and close the valve seat 1.

[0022] In another design, a guide column 5 is fixedly connected to the top of the valve core 3, a slide groove 6 is provided in the valve cover 2, the guide column 5 passes through and is slidably connected in the slide groove 6, and a first spring 4 is sleeved on the outside of the guide column 5. The two ends of the first spring 4 are respectively fixedly connected to the bottom of the valve core 3 and the valve cover 2, and a sealing ring is provided on the outside of the valve core 3.

[0023] In a further design, a guide sleeve 10 is fixedly connected to the top of the slide 6, and a slide 7 is slidably connected in the slide 6. A second spring 8 is fixedly connected to the bottom of the slide 7. The second spring 8 is provided with at least one, and the second spring 8 is detachably fixedly connected to the slide 7. In this embodiment, a second spring 8 is provided, and a resistance plate 9 is fixedly connected to the bottom of the second spring 8. The resistance plate 9 is used to resist the outside of the guide column 5.

[0024] Among them, a lifting column 11 is rotatably connected to the slide 7, the top of the lifting column 11 is fixedly connected to a rotating handle, the top of the guide sleeve 10 is fixedly connected to a top plate 16, one end of the lifting column 11 passes through the outside of the top plate 16, and a rotating adsorption component is provided on the outside of the lifting column 11.

[0025] The top of the top plate 16 is provided with an inlet 19, and the inner top of the top plate 16 is provided with a positioning hole 17. A magnet 18 is fixedly connected to the positioning hole 17. The top plate 16 is fixedly connected to the positioning column 15. The bottom of the fixing plate 12 is provided with a positioning groove 14 at the position of the positioning column 15 corresponding to the bottom of the fixing plate 12. The positioning groove 14 is interference-fitted with the positioning column to fix the position of the lifting column 11. When it is necessary to increase the pressure of the valve core 3, the lifting column 11 is rotated to make the fixing plate 12 correspond to the inlet 19, and then the lifting column 11 is pressed downward to allow the fixing plate 12 to enter the guide sleeve 10. At the same time, the contact plate 9 is in contact with the top of the guide column 5 under the elastic force of the second spring 8. At this time, the positioning protrusion 13 is inserted into the positioning hole 17, so that the magnet 18 and the positioning protrusion 13 are firmly adsorbed.

[0026] In order for those skilled in the art to fully understand the technical solution, the method of using this embodiment is as follows:

[0027] Install the valve seat 1 on the water pipe. When the liquid pressure reaches the set value, it will resist the valve core 3 to move upward. After the valve core 3 moves upward, the valve seat 1 is opened, thereby realizing the flow of liquid.

[0028] If the elastic force of the first spring 4 is weak after long-term use or the pressure to lift the valve core 3 needs to be increased, the lifting column 11 is rotated to make the fixed plate 12 correspond to the inlet 19, and then the lifting column 11 is pressed downward to allow the fixed plate 12 to enter the guide sleeve 10. At the same time, the resistance plate 9 is in contact with the top of the guide column 5 under the elastic force of the second spring 8. At this time, the positioning protrusion 13 is inserted into the positioning port 17, and the magnet 18 and the positioning protrusion 13 are firmly adsorbed. In this way, the lifting pressure of the valve core 3 can be increased by arranging the second spring 8 on the outside of the guide column 5.

[0029] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are merely relational words determined for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention, and cannot be understood as a limitation on the present invention.

Claims

1. An adjustable check valve, characterized in that: The invention comprises a valve seat (1), wherein a valve core (3) is provided in the valve seat (1), the top of the valve seat (1) is detachably fixedly connected to a valve cover (2), the top of the valve core (3) is fixedly connected to a guide column (5), the valve cover (2) is provided with a slide groove (6), the guide column (5) passes through and is slidably connected in the slide groove (6), the outer sleeve of the guide column (5) is provided with a first spring (4), the top of the slide groove (6) is fixedly connected to a guide sleeve (10), the slide groove (6) is also slidably connected to a slide plate (7), the bottom of the slide plate (7) is fixedly connected to a second spring (8), a lifting column (11) is rotatably connected to the slide plate (7), the top of the guide sleeve (10) is fixedly connected to a top plate (16), one end of the lifting column (11) passes through the outside of the top plate (16), and the outside of the lifting column (11) is provided with a rotating adsorption component.

2. An adjustable check valve according to claim 1, characterized in that: The rotary adsorption assembly comprises a fixing plate (12) fixedly connected to the outside of the lifting column (11) and a positioning protrusion (13) fixedly connected to the outside of the fixing plate (12); an entrance opening (19) is provided at the top of the top plate (16); a positioning opening (17) is provided at the inner top of the top plate (16); and a magnet (18) is fixedly connected inside the positioning opening (17).

3. An adjustable check valve according to claim 2, characterized in that: A positioning column (15) is fixedly connected to the top plate (16), and a positioning groove (14) is provided at the bottom of the fixed plate (12) at a position corresponding to the positioning column (15).

4. An adjustable check valve according to claim 3, characterized in that: A rotating handle is fixedly connected to the top of the lifting column (11).

5. An adjustable check valve according to claim 4, characterized in that: At least one second spring (8) is provided, and the second spring (8) is detachably fixedly connected to the slide plate (7).

6. An adjustable check valve according to claim 5, characterized in that: The bottom of the second spring (8) is fixedly connected to a contact plate (9).

7. An adjustable check valve according to claim 6, characterized in that: A sealing ring is provided between the valve cover (2) and the valve seat (1), and both ends of the valve seat (1) are fixedly connected with connecting flanges.

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