Rotary check valve rubber valve clack

Abstract

The utility model provides a rubber valve clack of a rotary check valve. The rubber valve clack of the rotary check valve comprises a metal rotating shaft, a disc framework, nylon mesh cloth and outer covering rubber. The outer covering rubber is composed of a shaft end, a connecting neck part and a rubber sealing disc, and the shaft end is connected with the rubber sealing disc through the connecting neck part; the middle part of the metal rotating shaft is coated on the shaft end; the disc framework is wrapped in the rubber sealing disc. According to the rubber valve clack of the rotary check valve, the two ends of the cylindrical framework of the rotary shaft part can be changed into an outer leakage state from an inner wrapping state, so that the contact part of the rotary shaft part is changed into metal contact, an unqualified valve cover can be directly screened out in the installation process, the rotary shaft part is not in elastic contact any more, and the service life of the rotary check valve is prolonged. The rotating shaft structure has the advantages of being simple in structure, convenient to manufacture and rapid to install.

Description

Technical Field

[0001] The utility model belongs to the technical field of a rotary check valve rubber disc, in particular to a rotary check valve rubber disc. Background Art

[0002] In the existing rubber-sealed swing check valve, the valve disc generally adopts a structure in which the frame is fully covered with rubber, which is characterized by easy installation and the installation error caused by the size of the valve cover casting, corner defects, etc. can be ignored.

[0003] A rubber flap check valve is disclosed in the utility model patent with the announcement number CN204062026U, including a first water inlet, a second water inlet, a water outlet and a rubber valve flap, a valve cover is provided on the water outlet, fixed by screws, and used to repair the rubber valve flap installed between the first water inlet and the second water inlet, and the rubber valve flap is installed at the connection between the first water inlet and the second water inlet through a rotating shaft. The utility model provides two water inlets and a rubber valve flap between the two water inlets. When one end does not need water inlet, the force of water passing through can be used to make the rubber valve flap block the other water inlet, effectively solving the problem of difficult sealing effect.

[0004] Regarding the above-mentioned related technologies, the utility model applicant believes that there are the following defects:

[0005] 1. However, when the rotation of the valve disc has elastic compression, the rubber neck of the valve disc will be subjected to bending force during the opening process. When the valve disc continues to swing under the impact of water flow, its bending force and torsion are concentrated on the rubber at the connection neck, which often leads to the neck of the valve disc breaking. Therefore, a structure is needed that can directly smoothly rotate the shaft during installation to avoid bending force and screen out unqualified valve covers.

[0006] Therefore, it is necessary to provide a new rotary check valve rubber disc to solve the above-mentioned technical problems. Utility Model Content

[0007] The technical problem solved by the utility model is to provide a rotary check valve rubber disc which can change the two ends of the cylindrical skeleton of the rotating shaft part from an inner covering state to an outer leakage state so that the contact part of the rotating shaft part becomes a metal contact, and unqualified valve covers can be directly screened out during the installation process. The rotating shaft part is no longer in elastic contact, and the normal rotational movement of the rotating shaft part can be guaranteed. The structure is simple, the manufacture is convenient, and the installation is quick.

[0008] In order to solve the above technical problems, the utility model provides a rotary check valve rubber disc comprising: a metal shaft, a disc frame, a nylon mesh and an outer covering rubber;

[0009] The outer rubber coating is composed of a shaft end, a connecting neck and a rubber sealing disc, and the shaft end and the rubber sealing disc are connected through the connecting neck;

[0010] The middle part of the metal shaft is coated on the shaft end;

[0011] The disc frame is coated in a rubber sealing disc;

[0012] After the nylon mesh cloth is wound around the middle position of the metal shaft, it passes through the connecting neck and is covered in the outer rubber.

[0013] As a further solution of the utility model, the metal shaft is an I-shaped cylindrical shaft, the two ends of the metal shaft have the same diameter, and are provided with transition fillets and countersunk grooves on the cover.

[0014] As a further solution of the present invention, the diameter of the rubber coating of the cylindrical outer ring in the middle of the metal shaft cannot be larger than the diameter size at both ends of the metal shaft.

[0015] As a further solution of the utility model, a thickened trapezoidal platform is provided at the upper end of the connecting neck covered with rubber, and the thickened trapezoidal platform is used to enhance the strength of the neck.

[0016] As a further solution of the utility model, a positioning round table is provided on the back side of the rubber sealing disk on the outer rubber coating.

[0017] As a further solution of the utility model, the two ends of the nylon mesh cloth extend to the centers of the upper and lower end surfaces of the disk frame respectively.

[0018] Compared with the related art, the rotary check valve rubber disc provided by the utility model has the following beneficial effects:

[0019] 1. The utility model changes the two ends of the cylindrical skeleton of the rotating shaft part from an inner covering state to an outer exposed state, so that the contact part of the rotating shaft part becomes a metal contact, and unqualified valve covers can be directly screened out during the installation process. The rotating shaft part is no longer in elastic contact, and the normal rotation movement of the rotating shaft part can be guaranteed. The utility model has a simple structure, is easy to manufacture, and is quick to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a side sectional view of the structure of the utility model;

[0022] Figure 2 It is a top view of the structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the metal shaft structure in the utility model;

[0024] Figure 4 It is a schematic diagram of the application of the rubber disc of the rotary check valve of the utility model.

[0025] In the figure: 1, metal shaft; 2, disk frame; 3, nylon mesh; 4, outer rubber; 41, shaft end; 42, connecting neck; 43, rubber sealing disk. DETAILED DESCRIPTION

[0026] Please refer to Figures 1 to 4 ,in, Figure 1 It is a side sectional view of the structure of the utility model; Figure 2 It is a top view of the structure of the utility model; Figure 3 This is a schematic diagram of the metal shaft structure in the utility model; Figure 4 The following is a schematic diagram of the application of the rubber disc of the rotary check valve of the utility model. The rubber disc of the rotary check valve comprises: a metal shaft 1, a disc frame 2, a nylon mesh 3 and an outer covering rubber 4;

[0027] The outer rubber 4 is composed of a shaft end 41, a connecting neck 42 and a rubber sealing disc 43, and the shaft end 41 and the rubber sealing disc 43 are connected by the connecting neck 42;

[0028] The middle part of the metal shaft 1 is covered on the shaft end 41;

[0029] The disk frame 2 is wrapped in a rubber sealing disk 43;

[0030] After the nylon mesh 3 is wound around the middle position of the metal shaft 1 , it passes through the connecting neck 42 and is wrapped in the outer rubber.

[0031] The metal shaft 1 is an I-shaped cylindrical shaft. The two ends of the metal shaft 1 have the same diameter and are provided with transition fillets and a countersunk groove on the cover.

[0032] The diameter of the rubber coating of the cylindrical outer ring in the middle of the metal shaft 1 cannot be larger than the diameter size at both ends of the metal shaft 1.

[0033] A thickened trapezoidal platform is provided at the upper end of the connecting neck 42 of the outer rubber 4, and the thickened trapezoidal platform is used to enhance the strength of the neck.

[0034] A positioning round platform is provided on the back side of the rubber sealing disk 43 on the outer rubber 4 .

[0035] The two ends of the nylon mesh cloth 3 extend to the center of the upper and lower end surfaces of the disk frame 2 respectively.

[0036] The two ends of the cylindrical skeleton of the rotating shaft part are changed from an inner covering state to an outer exposed state, so that the contact part of the rotating shaft part becomes a metal contact, and unqualified valve covers can be directly screened out during the installation process. The rotating shaft part is no longer in elastic contact, which can ensure the normal rotation movement of the rotating shaft part. It has a simple structure, is easy to manufacture, and is quick to install.

[0037] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0038] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0039] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A rotary check valve rubber disc, characterized in that: include: Metal shaft, disc frame, nylon mesh and outer rubber; The outer rubber coating is composed of a shaft end, a connecting neck and a rubber sealing disc, and the shaft end and the rubber sealing disc are connected via the connecting neck; The middle part of the metal shaft is coated on the shaft end; The disc frame is coated in a rubber sealing disc; After the nylon mesh cloth is wound around the middle position of the metal shaft, it passes through the connecting neck and is covered in the outer rubber.

2. The rotary check valve rubber disc according to claim 1, characterized in that: The metal rotating shaft is an I-shaped cylindrical shaft. The two ends of the metal rotating shaft have the same diameter and are provided with transition fillets and a recessed groove on the cover.

3. The rotary check valve rubber disc according to claim 1, characterized in that: The diameter of the rubber coating of the cylindrical outer ring in the middle of the metal shaft cannot be larger than the diameters at both ends of the metal shaft.

4. The rotary check valve rubber disc according to claim 1, characterized in that: A thickened trapezoidal platform is provided at the upper end of the connecting neck covered with rubber, and the thickened trapezoidal platform is used to enhance the strength of the neck.

5. The rotary check valve rubber disc according to claim 1, characterized in that: A positioning round platform is provided on the back side of the rubber sealing disk on the outer rubber cover.

6. The rotary check valve rubber disc according to claim 1, characterized in that: The two ends of the nylon mesh cloth extend to the centers of the upper and lower end surfaces of the disk frame respectively.

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