Spring type grooved soft seal check valve

Abstract

The utility model discloses a spring formula groove soft sealing check valve, it includes valve body, being equipped with the medium channel of through on the valve body, being equipped with the valve platform on the medium channel in the valve body, still be equipped with rotatable pivot on the valve body, be equipped with the outwardly protruding fork type arm on the pivot, and the two protruding arms of fork type arm one end have the connecting sleeve of key connection with pivot, and the other end of fork type arm is connected with the valve plate through the connecting column, the torsional spring is sleeved on the pivot, and one end of torsional spring abuts on the valve body, and the other end is connected on the fork type arm, the outer periphery of valve plate is covered with the sealing rubber bush, and the outer periphery of sealing rubber bush is equipped with the annular outwardly inclined lip, the ring surface that sealing rubber bush can lean to the valve platform is equipped with the protrusion. The utility model can drive the valve plate to adhere to the valve platform accurately, has the advantages such as effectively guaranteeing the function of check valve and the good check sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of valve bodies used on pipelines, specifically a spring-loaded grooved soft-seal check valve. Background Technology

[0002] A check valve is a valve body used to prevent backflow of media. A swing check valve is a type of check valve, its main structure consisting of a valve body and a swinging valve stem. A sealing plate is mounted on the valve stem; the swinging of the valve stem causes the sealing plate to block the valve orifice, thus stopping the flow of media. Currently, the technical challenges of this structure are twofold: firstly, ensuring the precision of the fit between the swinging valve stem and the central shaft reduces the accuracy when sealing the valve orifice; secondly, existing sealing rings are prone to incomplete sealing when fitting between the sealing ring on the sealing plate and the sealing plate on the valve body, making them unsuitable for stopping media with large pressure variations. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a spring-type grooved soft-seal check valve that can accurately fit the sealing valve plate to the sealing platform and has a good sealing effect, in order to address the above-mentioned defects.

[0004] To solve the above-mentioned technical problems, the provided spring-loaded grooved soft-seal check valve includes a valve body with a through medium channel. A valve platform located on the medium channel is located within the valve body. The valve body is also equipped with a rotatable shaft. Its structural features are: the shaft is equipped with outwardly extending fork-shaped arms; two protruding arms at one end of the fork-shaped arms have connecting sleeves that are keyed to the shaft; the other end of the fork-shaped arms is connected to a valve plate via a connecting post; a torsion spring is fitted on the shaft; one end of the torsion spring abuts against the valve body, and the other end is connected to the fork-shaped arms; a sealing sleeve covers the outer circumference of the valve plate; an annular, outwardly tilted, protruding lip is provided on the outer circumference of the sealing sleeve; and a protrusion is provided on the annular surface of the sealing sleeve that abuts against the valve platform.

[0005] The fork-shaped arm is provided with a connection hole, and the torsion spring has an insertion end that can extend into the connection hole.

[0006] The valve plate is connected to an annular valve seat, and the medium passage is cut off by the sealing sleeve on the valve plate and the annular valve seat. The valve body is provided with a sealing platform located outside the annular valve seat. The sealing platform has a conical cross-section and a small opening near the annular valve seat. When the sealing sleeve is attached to the annular valve seat, the lip of the sealing sleeve can be attached to the inner ring surface of the sealing platform.

[0007] The lip gradually thins from the inside out.

[0008] The protrusion is an annular protrusion provided on the surface of the sealing sleeve, and multiple annular protrusions are provided at intervals.

[0009] With the above structure, this utility model can make the swing of the valve plate more stable through the structure of the fork-shaped arm, and the swing can be made more stable through the structure of the torsion spring. The structure of the sealing sleeve on the valve plate and the structure of the ring lip can accurately make the sealing valve plate fit the sealing platform and achieve a good sealing effect.

[0010] In summary, this utility model can precisely drive the valve plate to fit the valve platform, effectively ensuring the function of the check valve and providing a good check sealing effect. Attached Figure Description

[0011] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 It is along Figure 1 A schematic diagram of the structure viewed in section AA. Figure 3 yes Figure 1 A schematic diagram of the fork-shaped arm connecting the shaft key in the embodiment; Figure 4 yes Figure 1 A schematic diagram of another usage state in the embodiment; Figure 5 yes Figure 1 A schematic diagram of the valve plate in the embodiment; Figure 6 yes Figure 5 Enlarged structural diagram of region B. Detailed Implementation

[0012] As shown in the attached figure, an embodiment of a spring-loaded grooved soft-seal check valve is presented. It includes a valve body 1 cast from steel, with a media channel 2 extending horizontally through the valve body 1. The media channel 2 is the horizontally extending inner bore of the valve body 1. A valve platform 3 is located within the media channel 2, and the valve platform 3 is an annular platform disposed within the inner bore of the valve body 1, with its plane facing left. The valve body 1 is also equipped with a rotatable shaft 4. Specifically, the valve body has a through hole perpendicular to the media channel 2, with bearing sleeves installed at both ends of the through hole. The bearing sleeves have annular grooves, and sealing rings 13 are installed in the annular grooves. The sealing rings seal the bearing sleeves and the through hole. The shaft 4 is inserted between two bearing sleeves, and a seal 13 is also installed between the bearing sleeves and the shaft. The design provides an effective seal. A sealing plug 14 located outside the bearing sleeve is installed inside the through hole. The rotating shaft 4 is equipped with an outwardly extending fork-shaped arm 5. The structure of the fork-shaped arm 5 is similar to that of a bicycle fork, with two protruding arms at one end and one protruding arm at the other end. The two protruding arms at one end of the fork-shaped arm 5 have connecting sleeves 6 that are keyed to the rotating shaft 4. The other end of the fork-shaped arm 5 is connected to a valve plate 8 via a connecting post 7. The valve plate 8 is disc-shaped. A torsion spring 10 is fitted on the rotating shaft 4. One end of the torsion spring 10 rests against the valve body 1, and the other end is connected to the fork-shaped arm 5. Specifically, the fork-shaped arm 5 is provided with a connecting hole 51, and the torsion spring 10 has an insertion end that can extend into the connecting hole 51. The structure of the connecting hole and the insertion end can improve the stability of the torsion spring during operation.

[0013] Referring to the attached drawings, the outer circumferential surface of the valve plate 8 is covered with a sealing sleeve 9. The outer circumference of the sealing sleeve 9 is provided with an annular lip 91 that tilts outward and gradually thins from the inside out. The sealing sleeve 9 has a protrusion 92 on its annular surface that can abut against the valve seat 3. The protrusion 92 is an annular protrusion on the surface of the sealing sleeve 9, and multiple spaced annular protrusions are provided. The valve seat 3 is connected to an annular valve seat 11, and the medium channel 2 is shut off by the fit between the sealing sleeve 9 on the valve plate 8 and the annular valve seat 11. The valve body 1 is provided with a sealing platform 12 located outside the annular valve seat 11. The sealing platform 12 has a conical cross-section and a small opening near the annular valve seat 11. When the sealing sleeve 9 is fitted onto the annular valve seat 11, the annular lip 91 of the sealing sleeve 9 can fit onto the inner annular surface of the sealing platform 12. This conical structure and the structure of the annular lip can better achieve precise sealing and improve the sealing effect.

[0014] Referring to the attached diagram, Figure 2 and Figure 4 The arrows in the diagram indicate the direction of medium flow. When the medium flows in medium channel 2, as shown... Figure 2In the state described above, when the medium is not being transported or needs to be shut off (for example, when the medium pressure suddenly decreases significantly), the fork arm 5 swings under the action of the torsion spring 10, and the valve plate 8 swings precisely toward the valve seat 3. The bottom surface of the sealing sleeve 9 is attached to the annular valve seat 11, and the ring lip 91 is attached to the inner ring surface of the sealing platform 12. The arrow line in the figure C indicates that the ring lip 91 is under force, which can make the ring lip 91 fit better, thus achieving a better sealing effect.

[0015] The above description describes the specific structural form of this utility model. This utility model is not limited to the above embodiments. For those skilled in the art, equivalent variations and component substitutions based on the specific structure of this utility model are all within the protection scope of this utility model. Furthermore, this utility model can be used for disassembling irregularly shaped nuts on other machines.

Claims

1. A spring-loaded grooved soft-seal check valve, comprising a valve body (1), a through medium channel (2) on the valve body (1), a valve platform (3) located on the medium channel (2) inside the valve body (1), and a rotatable shaft (4) mounted on the valve body (1), characterized in that: The rotating shaft (4) is equipped with an outwardly extending fork-shaped arm (5). Two protruding arms at one end of the fork-shaped arm (5) have connecting sleeves (6) that are keyed to the rotating shaft (4). The other end of the fork-shaped arm (5) is connected to a valve plate (8) via a connecting post (7). A torsion spring (10) is fitted on the rotating shaft (4). One end of the torsion spring rests against the valve body (1), and the other end is connected to the fork-shaped arm (5). A sealing sleeve (9) is covered on the outer circumference of the valve plate (8). An annular lip (91) is provided on the outer circumference of the sealing sleeve (9). A protrusion (92) is provided on the annular surface of the sealing sleeve (9) that can rest against the valve platform (3).

2. The spring-loaded grooved soft-seal check valve according to claim 1, characterized in that: The fork arm (5) is provided with a connection hole (51), and the torsion spring (10) has an insertion end that can extend into the connection hole (51).

3. The spring-loaded grooved soft-seal check valve according to claim 1, characterized in that: The valve seat (3) is connected to an annular valve seat (11), and the medium channel (2) is shut off by the sealing sleeve (9) on the valve plate (8) and the annular valve seat (11). The valve body (1) is provided with a sealing platform (12) located outside the annular valve seat (11). The cross section of the sealing platform (12) is conical and the part near the annular valve seat (11) is a small opening. When the sealing sleeve (9) is attached to the annular valve seat (11), the ring lip (91) of the sealing sleeve (9) can be attached to the inner ring surface of the sealing platform (12).

4. The spring-loaded grooved soft-seal check valve according to any one of claims 1-3, characterized in that: The annular lip (91) gradually thins from the inside out.

5. The spring-loaded grooved soft-seal check valve according to any one of claims 1-3, characterized in that: The protrusion (92) is an annular protrusion provided on the surface of the sealing sleeve (9), and multiple annular protrusions are provided at intervals.

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