Split type check valve

Abstract

The split type check valve comprises a check valve body with the hollow interior, the check valve body comprises a valve body, a connecting pipe and a mounting pipe which are communicated, the first end of the valve body is matched with the connecting pipe in a sleeved mode to form a first pipe cavity, and the second end of the valve body is matched with the mounting pipe in a sleeved mode to form a second pipe cavity; the check valve element comprises a support, at least one valve clack piece and a mounting rod, the support is arranged on an inner cavity of the valve body to form a circulation area, the end of the mounting rod is detachably connected with the support through a mounting base, the valve clack piece is provided with a rotating shaft, and the end of the rotating shaft is rotationally connected to the mounting base; the mounting rod is arranged in the first pipe cavity or the second pipe cavity so that the valve clack can turn over and move in the first pipe cavity or the second pipe cavity around the rotating shaft, and an elastic reset structure is arranged between the mounting rod and the valve clack. According to the split type check valve, a worker can split the check valve body, the check valve can be rapidly repaired or maintained, and the split type check valve is good in practicability.

Description

Technical Field

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

[0002] The check valve relies on the medium pressure to achieve automatic closing and sealing. It is mainly used to prevent the medium from flowing back, protect the pump and key equipment in the pipeline, and is suitable for a variety of media. In the prior art, the swing check valve is a type of check valve. Its structure is provided with a rotatable and movable valve disc. When the medium enters the valve body from the valve inlet, the medium pushes the valve disc to open it; when no medium enters the valve inlet, the valve disc resets and closes, and the valve achieves the check function. However, for the convenience of installation, most check valves are integrated structures, which are difficult to adapt to different pipe diameters, and the valve disc is prone to jamming or wear after multiple rotations. The entire check valve needs to be disassembled, which affects the use and has poor practicality. Utility Model Content

[0003] The utility model aims to provide a split check valve designed to solve the deficiencies of the above-mentioned technology. Workers can disassemble the check valve body to quickly repair or maintain the check valve, which has good practicality.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a split check valve, comprising:

[0005] A check valve body with a hollow interior, the check valve body comprising a valve body, a connecting pipe and a mounting pipe which are interconnected, the first end of the valve body being sleeved and matched with the connecting pipe to form a first tube cavity, and the second end of the valve body being sleeved and matched with the mounting pipe to form a second tube cavity;

[0006] The check valve core includes a bracket, at least one valve flap, and a mounting rod. The bracket is arranged on the inner cavity of the valve body to form a flow area. The end of the mounting rod is detachably connected to the bracket through a mounting seat. The valve flap is provided with a rotating shaft. The end of the rotating shaft is rotatably connected to the mounting seat so that the valve flap can flip around the rotating shaft in the first tube cavity or the second tube cavity. An elastic reset structure is arranged between the mounting rod and the valve flap.

[0007] Preferably, the bracket is arranged to be inclined relative to the axial direction of the valve body, and the bracket includes a support ring and a support section. The support ring is fixedly connected to the inner cavity wall of the valve body, and both ends of the support section are fixedly connected to the support ring to separate the flow area into two flow holes. Two valve flaps are provided, and the two valve flaps are symmetrically arranged with the mounting rod as the center.

[0008] Preferably, a docking seat is provided at the end of the support section, and two movable grooves are symmetrically opened on the side wall of the docking seat. The mounting seat is provided with a mounting block inserted into the movable groove, and the mounting block and the opposite side of the movable groove are in abutment with the end of the rotating shaft.

[0009] Preferably, a mounting groove is provided on the side wall of the docking seat corresponding to the space between the two movable grooves, and the mounting groove and the opposite side of the mounting seat are both in contact with the mounting rod.

[0010] Preferably, the elastic reset structure is a torsion spring, the elastic reset structure is sleeved with the mounting rod, the side walls of the two valve flaps are provided with a slot structure, and the two ends of the elastic reset structure are respectively abutted against the two slot structures.

[0011] Preferably, the bracket is formed with an abutment ring along the edge of the flow hole, and a sealing ring is embedded in the outer edge of the valve flap, and the sealing ring is matched with the abutment ring.

[0012] Preferably, the connecting pipe is sleeved onto the inner wall of the first end of the valve body, and the outer wall of the connecting pipe is provided with a first ring body, and the first ring body is in abutment with the end surface of the first end of the valve body.

[0013] Preferably, a mounting piece is provided on the outer wall of the mounting tube, and a mounting hole is passed through the mounting piece; the second end of the valve body is inserted into the inner wall of the mounting tube, and a second ring body is provided on the outer wall of the valve body, and the second ring body is in abutment with the end face of the mounting tube.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a split type water check valve, wherein a valve body, a connecting pipe and an installation pipe are assembled into a check valve body, a first end of the valve body is sleeved and matched with the connecting pipe to form a first tube cavity, and a second end of the valve body is sleeved and matched with the installation pipe to form a second tube cavity, and a valve flap of the check valve core can be flipped around a rotating shaft in the first tube cavity or in the second tube cavity, and under the action of the elastic reset structure, the valve flap has a tendency to cover the flow area, thereby realizing the function of preventing the medium from flowing back, and the check valve body is a split structure, and the staff can disassemble the check valve body to disassemble and assemble the check valve core, quickly repair or maintain the check valve core, and can adapt to the requirements of different pipe diameters by replacing connecting pipes of different diameters, thereby greatly improving the practicality of the water check valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The structure of the check valve in the embodiment is shown in FIG. Figure 1 ;

[0017] Figure 2The structure of the check valve in the embodiment is shown in FIG. Figure 2 ;

[0018] Figure 3 is a cross-sectional view of the check valve in the embodiment Figure 1 ;

[0019] Figure 4 is a cross-sectional view of the check valve in the embodiment Figure 2 ;

[0020] Figure 5 is an exploded view of the check valve body in the embodiment;

[0021] Figure 6 is an exploded view of the check valve core in the embodiment.

[0022] In the figure: 1. valve body; 101. second ring body; 2. connecting pipe; 201. first ring body; 3. mounting pipe; 301. mounting piece; 302. mounting hole; 4. first tube cavity; 5. second tube cavity; 6. bracket; 61. support ring; 62. support section; 7. valve flap; 701. rotating shaft; 702. sealing ring; 8. mounting rod; 9. mounting seat; 901. mounting block; 10. circulation hole; 11. docking seat; 1101. movable groove; 1102. mounting groove; 12. slot structure; 13. abutment ring; 14. elastic reset structure. DETAILED DESCRIPTION

[0023] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0024] refer to Figures 1 to 6 A split check valve includes a check valve body with a hollow interior and a check valve core. The check valve body includes a valve body 1, a connecting pipe 2 and a mounting pipe 3 which are connected to each other. The connecting pipe 2 is inserted into the inner wall of the first end of the valve body 1. The outer wall of the connecting pipe 2 is provided with a first ring body 201. When the first ring body 201 contacts and cooperates with the end face of the first end of the valve body 1, the first end of the valve body 1 and the connecting pipe 2 are sleeved and matched to form a first tube cavity 4. The second end of the valve body 1 is inserted into the inner wall of the mounting pipe 3. The outer wall of the valve body 1 is provided with a second ring body 101. When the second ring body 101 contacts and cooperates with the end face of the mounting pipe 3, the second end of the valve body 1 and the mounting pipe 3 are sleeved and matched to form a second tube cavity 5. The outer wall of the mounting pipe 3 is provided with a rectangular mounting piece 301. The mounting piece 301 is penetrated with a mounting hole 302 so as to fix the mounting pipe 3 on the pipeline channel.

[0025] The check valve core includes a bracket 6, two valve flaps 7, and a mounting rod 8. The bracket 6 is arranged to be inclined relative to the axial direction of the valve body 1. The bracket 6 includes a support ring 61 and a support section 62. The edge portion of the support ring 61 is integrally formed on the inner cavity wall of the valve body 1. The hollow area of ​​the support ring 61 is the flow area. Both ends of the support section 62 are fixedly connected to the support ring 61 to divide the flow area into two flow holes 10.

[0026] The valve flap 7 is a semicircular sheet body, and the shaft valve flap 7 that is movably connected to the rotating shaft 701 is integrally formed with the rotating shaft 701. The circumference of the rotating shaft 701 is parallel to the inclined surface of the bracket 6. A docking seat 11 is formed at the end of the support section 62. The docking seat 11 is detachably connected to the mounting seat 9. The docking seat 11 and the mounting seat 9 are connected by bolts. The side wall of the docking seat 11 is symmetrically provided with two movable grooves 1101. The mounting seat 9 is provided with a mounting block 901 inserted into the movable groove 1101. The opposite side of the mounting block 901 and the movable groove 1101 is in conflict with the end of the rotating shaft 701 to maintain The side wall of the docking seat 11 is provided with a mounting groove 1102 between the two movable grooves 1101. The mounting groove 1102 and the opposite side of the mounting seat 9 are both in conflict with the mounting rod 8 to maintain the inclination of the mounting rod 8. The end of the mounting rod 8 forms a conflict fit or a clearance fit with the inner cavity wall of the valve body 1. The two valve flaps 7 are symmetrically arranged with the mounting rod 8 as the center. The valve flaps 7 flip around the rotating shaft 701 in the first tube cavity 4 or the second tube cavity 5 to prevent foreign matter from interfering with the opening and closing activities of the two valve flaps 7 when the check valve is installed. The end of the rotating shaft 701 forms a conflict fit or a clearance fit with the inner cavity wall of the valve body 1 to ensure that the rotating shaft 701 rotates more smoothly.

[0027] The check valve body is a split structure, and the staff can disassemble the check valve body to disassemble and assemble the check valve core, quickly repair or maintain the check valve core, and can adapt to different pipe diameters by replacing the connecting pipe 2 with different diameters, thereby greatly improving the practicality of the water stop valve.

[0028] An elastic reset structure 14 is provided between the mounting rod 8 and the valve flap 7. The elastic reset structure 14 is a torsion spring. The elastic reset structure 14 is sleeved with the mounting rod 8. The side walls of the two valve flaps 7 are provided with a slot structure 12. The two ends of the elastic reset structure 14 are respectively abutted against the two slot structures 12. Under the action of the elastic reset structure 14, the valve flap 7 has a tendency to cover the circulation area, realizing the function of preventing the medium from flowing back. Preferably, the mounting tube 3 is the output end, and the connecting tube 2 is the input end. The medium such as gas or liquid flows into the first tube cavity 4 through the connecting tube 2. The medium pressure drives the two valve flaps 7 to overcome the elastic reset structure 14 and flip in the second tube cavity 5, so that the first tube cavity 4 and the second tube cavity 5 are connected. The medium flows from the first tube cavity 4 into the second tube cavity 5 and is output to the outside through the mounting tube 3. Until the medium pressure is less than the elastic force of the elastic reset structure 14, the elastic reset structure 14 resets and drives the two valve flaps 7 to close the two flow holes 10 respectively. The bracket 6 forms an abutment ring 13 along the edge of the flow hole 10. The outer edge of the valve flap 7 is embedded with a sealing ring 702, and the sealing ring 702 is adapted to the abutment ring 13. When the valve flap 7 covers the corresponding flow hole 10, an interference fit is formed between the sealing ring 702 and the opposite side of the abutment ring 13 to ensure the sealing of the flow hole 10 after closing.

[0029] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A split check valve, characterized in that: include: A check valve body with a hollow interior, the check valve body comprising a valve body (1), a connecting pipe (2) and a mounting pipe (3) which are interconnected, the first end of the valve body (1) being sleeved and matched with the connecting pipe (2) to form a first tube cavity (4), and the second end of the valve body (1) being sleeved and matched with the mounting pipe (3) to form a second tube cavity (5); A check valve core, the check valve core comprises a bracket (6), at least one valve flap (7), and a mounting rod (8), wherein the bracket (6) is arranged on the inner cavity of the valve body (1) to form a flow area, the end of the mounting rod (8) is detachably connected to the bracket (6) via a mounting seat (9), the valve flap (7) is provided with a rotating shaft (701), the end of the rotating shaft (701) is rotatably connected to the mounting seat (9), so that the valve flap (7) can be turned around the rotating shaft (701) in the first tube cavity (4) or the second tube cavity (5), and an elastic reset structure (14) is provided between the mounting rod (8) and the valve flap (7).

2. A split check valve according to claim 1, characterized in that: The bracket (6) is arranged to be inclined relative to the axial direction of the valve body (1), and the bracket (6) comprises a support ring (61) and a support section (62). The support ring (61) is fixedly connected to the inner cavity wall of the valve body (1), and both ends of the support section (62) are fixedly connected to the support ring (61) to divide the flow area into two flow holes (10). Two valve flaps (7) are provided, and the two valve flaps (7) are symmetrically arranged with the mounting rod (8) as the center.

3. A split check valve according to claim 2, characterized in that: A docking seat (11) is provided at the end of the support section (62), and two movable grooves (1101) are symmetrically provided on the side wall of the docking seat (11), and the mounting seat (9) is provided with a mounting block (901) inserted into the movable groove (1101), and the mounting block (901) and the opposite side of the movable groove (1101) are in contact with the end of the rotating shaft (701).

4. A split check valve according to claim 3, characterized in that: A mounting groove (1102) is provided on the side wall of the docking seat (11) corresponding to the position between the two movable grooves (1101), and the mounting groove (1102) and the opposite side of the mounting seat (9) are in contact with the mounting rod (8).

5. A split check valve according to claim 2, characterized in that: The elastic reset structure (14) is a torsion spring, and the elastic reset structure (14) is sleeved and matched with the mounting rod (8). The side walls of the two valve flaps (7) are both provided with a slot structure (12), and the two ends of the elastic reset structure (14) are respectively abutted against the two slot structures (12).

6. A split check valve according to claim 2, characterized in that: The bracket (6) is formed with an abutment ring (13) along the edge of the flow hole (10), and a sealing ring (702) is embedded in the outer edge of the valve flap (7), and the sealing ring (702) is adapted to the abutment ring (13).

7. A split check valve according to claim 1, characterized in that: The connecting pipe (2) is inserted into the inner wall of the first end of the valve body (1), and the outer wall of the connecting pipe (2) is provided with a first ring body (201), and the first ring body (201) is in abutment with the end surface of the first end of the valve body (1).

8. A split check valve according to claim 1, characterized in that: The outer wall of the mounting tube (3) is provided with a mounting piece (301), and the mounting piece (301) is penetrated by a mounting hole (302); the second end of the valve body (1) is inserted into the inner wall of the mounting tube (3), and the outer wall of the valve body (1) is provided with a second ring body (101), and the second ring body (101) is in abutment with the end face of the mounting tube (3).

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