Check valve for fish tank

Abstract

The utility model provides a check valve for a fish tank, and belongs to the technical field of valves. The problems that an existing non-return motion is unstable, and the non-return effect is poor are solved. The check valve for the fish tank comprises a straight-through valve body, the two ends of the straight-through valve body are connected with pipe joints respectively, the two pipe joints and the straight-through valve body are connected through loose joint sleeves respectively, a check valve assembly is arranged in the straight-through valve body, and an abutting sealing structure is arranged between the check valve assembly and the pipe joint at one end of the check valve assembly. According to the check valve, the compression spring is arranged on the upper stand column of the check valve element in the sleeved mode, the compression spring elastically acts on the check valve element to enable the check valve element and the check valve body to abut against each other in a sealed mode, the check valve element and the check valve body can abut against each other in a sealed mode, and the check effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a check valve for a fish tank. Background Art

[0002] A check valve is a valve used to control flow direction, such as a check valve assembly described in Chinese patent number: 202110525245.6, whose specific structure includes a shell, the shell includes an inlet body, the inlet body includes: a fluid inlet; a first sealing flange having a first height; a second sealing flange having a second height; and a central channel; and a rod having a centering column, the centering column is configured to be received by the central channel of the inlet body; and a seal, the seal includes: an inner ring having a first thickness; and an outer ring having a second thickness less than the first thickness, wherein in the fully sealed position of the check valve assembly, the inner ring is engaged with the first sealing flange, and the outer ring is engaged with the second sealing flange.

[0003] In the above structure, the rod of the centering column is unstable in the non-return motion in the central channel, and the sealing element is completely automatically non-returned by the fluid, so the non-return effect is not very good. Summary of the invention

[0004] The utility model aims to solve the above problems existing in the prior art and provides a check valve for a fish tank, so as to solve the problems of unstable check movement and poor check effect.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a check valve for a fish tank, comprising a through valve body, both ends of the through valve body are respectively connected to pipe joints, the two pipe joints and the through valve body are respectively connected by a flexible sleeve, characterized in that a check valve assembly is arranged in the through valve body, and abutting sealing structure is arranged between the check valve assembly and the pipe joint at one end.

[0006] The check valve used in the fish tank mainly has a check valve assembly arranged in the straight-through valve body. The abutment sealing structure arranged between the check valve assembly and the pipe joint at one end ensures that the check valve assembly has stable check movement and good check effect when performing check movement.

[0007] In the above-mentioned check valve for a fish tank, the check valve assembly includes a check valve body, a check valve core is arranged in the check valve body, and the check valve core is opened or closed on the check valve body. The check valve core seals the check valve body, because the check valve core has a rubber piece, and the rubber piece and the check valve body cooperate to seal.

[0008] In the above-mentioned check valve for fish tanks, the check valve body includes a cylindrical main body and a cylindrical hollow bracket cooperating with the main body, an annular platform is arranged at one end of the main body, a first annular bracket is arranged inside the main body, a second annular bracket is arranged at the head of the cylindrical hollow bracket, an annular ring is arranged at the bottom of the cylindrical hollow bracket, the cylindrical hollow bracket is sleeved on the main body and the annular ring abuts against the annular platform of the main body, an upper column and a lower column are respectively arranged at both ends of the check valve core, the check valve core is located in the main body and cooperates with the main body to open or close, the upper column of the check valve core is slidably penetrated into the second annular bracket of the cylindrical hollow bracket, and the lower column of the check valve core is slidably penetrated into the first annular bracket of the main body.

[0009] In the above-mentioned check valve for fish tank, the upper column sleeve of the check valve core is provided with a compression spring, and the compression spring elastically acts on the check valve core so that the check valve core and the check valve body are sealed against each other. The compression spring has the effect of assisting the check valve core and the check valve body to seal and cooperate to close.

[0010] In the above-mentioned check valve for a fish tank, the abutment sealing structure includes an abutment boss arranged at the inner end of the pipe joint, and axially arranged abutment ribs are circumferentially distributed on the inner wall of the straight-through valve body. The annular ring of the cylindrical hollow bracket and the annular platform of the main body are located between the abutment boss and the abutment ribs. When the pipe joint is tightened on the straight-through valve body through the flexible sleeve, the abutment boss and the abutment ribs press the annular ring of the cylindrical hollow bracket and the annular platform of the main body.

[0011] In the above-mentioned check valve for a fish tank, a first sealing ring is provided on the outer end surface of the annular platform of the main body, and the first sealing ring acts on the annular platform of the main body and the abutting boss; a second sealing ring is provided on the outer wall of the annular platform of the main body, and the second sealing ring acts on the annular platform of the main body and the straight-through valve body.

[0012] Compared with the prior art, the advantages of the check valve for the fish tank are as follows: a first annular bracket and a second annular bracket of a cylindrical hollow bracket are arranged inside the main body, the upper column of the check valve core is slidably inserted into the second annular bracket of the cylindrical hollow bracket, and the lower column of the check valve core is slidably inserted into the first annular bracket of the main body, and the check valve core performs a stable check movement in the straight-through valve body without displacement; a compression spring is provided on the upper column sleeve of the check valve core, and the compression spring elastically acts on the check valve core, causing the check valve core and the check valve body to seal against each other, which helps the check valve core and the check valve body to seal against each other, and the check effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the check valve used in the fish tank.

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the check valve used in the fish tank.

[0015] In the figure, 1, straight-through valve body; 2, pipe joint; 3, flexible sleeve; 4, check valve core; 5, main body; 6, cylindrical hollow bracket; 7, annular platform; 8, first annular bracket; 9, second annular bracket; 10, annular ring; 11, upper column; 12, lower column; 13, compression spring; 14, abutment boss; 15, abutment rib; 16, first sealing ring; 17, second sealing ring. DETAILED DESCRIPTION

[0016] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0017] like Figure 1 and Figure 2 As shown, the check valve used in the fish tank is mainly composed of a straight-through valve body 1, both ends of the straight-through valve body 1 are respectively connected to pipe joints 2, the two pipe joints 2 and the straight-through valve body 1 are respectively connected through a flexible sleeve 3, a check valve assembly is arranged in the straight-through valve body 1, and during actual manufacturing, the check valve assembly includes a check valve body, a check valve core 4 is arranged in the check valve body, and the check valve core 4 is opened or closed on the check valve body.

[0018] In actual manufacturing, the check valve body is mainly composed of a cylindrical main body 5 and a cylindrical hollow bracket 6 matched with the main body 5. An annular platform 7 is provided at one end of the main body 5, a first annular bracket 8 is provided inside the main body 5, a second annular bracket 9 is provided at the head of the cylindrical hollow bracket 6, and an annular ring 10 is provided at the bottom of the cylindrical hollow bracket 6. The cylindrical hollow bracket 6 is sleeved on the main body 5 and the annular ring 10 abuts against the annular platform 7 of the main body 5. The two ends of the check valve core 4 are respectively provided with An upper column 11 and a lower column 12 are arranged, the check valve core 4 is located in the main body 5 and cooperates with the main body 5 to open or close, the upper column 11 of the check valve core 4 is slidably penetrated in the second annular bracket 9 of the cylindrical hollow bracket 6, and the lower column 12 of the check valve core 4 is slidably penetrated in the first annular bracket 8 of the main body 5; the upper column 11 of the check valve core 4 is sleeved with a compression spring 13, and the compression spring 13 elastically acts on the check valve core 4 so that the check valve core 4 and the check valve body are sealed and abutted.

[0019] In actual production, abutment sealing structure is arranged between the check valve assembly and the pipe joint 2 at one end thereof; the specific structure of the abutment sealing structure is as follows: an abutment boss 14 is arranged at the inner end of the pipe joint 2, and axially arranged abutment ribs 15 are circumferentially spaced on the inner wall of the through valve body 1, and the annular ring 10 of the cylindrical hollow bracket 6 and the annular platform 7 of the main body 5 are located between the abutment boss 14 and the abutment rib 15. When the pipe joint 2 is tightened on the through valve body 1 through the movably connected sleeve 3, the abutment boss 14 and the abutment rib 15 press the annular ring 10 of the cylindrical hollow bracket 6 and the annular platform 7 of the main body 5.

[0020] In actual production, a first sealing ring 16 is provided on the outer end surface of the annular platform 7 of the main body 5, and the first sealing ring 16 acts on the annular platform 7 of the main body 5 and the abutment boss 14 to seal; a second sealing ring 17 is provided on the outer wall of the annular platform 7 of the main body 5, and the second sealing ring 17 acts on the annular platform 7 of the main body 5 and the straight-through valve body 1 to seal.

[0021] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A check valve for a fish tank, comprising a through valve body (1), both ends of the through valve body (1) are respectively connected to pipe joints (2), the two pipe joints (2) and the through valve body (1) are respectively connected via a flexible sleeve (3), characterized in that: A check valve assembly is arranged inside the through valve body (1), and an abutment sealing structure is arranged between the check valve assembly and a pipe joint (2) at one end thereof.

2. A check valve for a fish tank according to claim 1, characterized in that: The check valve assembly comprises a check valve body, a check valve core (4) is arranged in the check valve body, and the check valve core (4) is opened or closed on the check valve body.

3. A check valve for a fish tank according to claim 2, characterized in that: The check valve body comprises a cylindrical main body (5) and a cylindrical hollow bracket (6) matched with the main body (5), one end of the main body (5) is provided with an annular platform (7), the interior of the main body (5) is provided with a first annular bracket (8), the head of the cylindrical hollow bracket (6) is provided with a second annular bracket (9), the bottom of the cylindrical hollow bracket (6) is provided with an annular ring (10), the cylindrical hollow bracket (6) is sleeved on the main body (5) and the annular ring (10) abuts against the annular platform (7) of the main body (5), an upper column (11) and a lower column (12) are respectively arranged at both ends of the check valve core (4), the check valve core (4) is located in the main body (5) and cooperates with the main body (5) to open or close, the upper column (11) of the check valve core (4) is slidably inserted into the second annular bracket (9) of the cylindrical hollow bracket (6), and the lower column (12) of the check valve core (4) is slidably inserted into the first annular bracket (8) of the main body (5).

4. A check valve for a fish tank according to claim 3, characterized in that: The upper column (11) of the check valve core (4) is sleeved with a compression spring (13), and the compression spring (13) elastically acts on the check valve core (4) so ​​that the check valve core (4) and the check valve body are sealed against each other.

5. A check valve for a fish tank according to claim 3, characterized in that: The abutment sealing structure comprises an abutment boss (14) provided at the inner end of the pipe joint (2), axially arranged abutment ribs (15) distributed circumferentially and spaced apart on the inner wall of the through valve body (1), the annular ring (10) of the cylindrical hollow bracket (6) and the annular platform (7) of the main body (5) being located between the abutment boss (14) and the abutment ribs (15), and when the pipe joint (2) is tightened onto the through valve body (1) through the movably connected sleeve (3), the abutment boss (14) and the abutment ribs (15) press the annular ring (10) of the cylindrical hollow bracket (6) and the annular platform (7) of the main body (5) tightly.

6. A check valve for a fish tank according to claim 5, characterized in that: A first sealing ring (16) is provided on the outer end surface of the annular platform (7) of the main body (5), and the first sealing ring (16) acts on the annular platform (7) of the main body (5) and the abutting boss (14). A second sealing ring (17) is provided on the outer wall of the annular platform (7) of the main body (5), and the second sealing ring (17) acts on the annular platform (7) of the main body (5) and the straight-through valve body (1).

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