Shock-proof flange structure for butterfly valve

Abstract

The utility model discloses a shock-proof flange structure for a butterfly valve, which comprises the butterfly valve and a flexible synthetic rubber joint matched with the butterfly valve, and further comprises a flange structure arranged between the butterfly valve and the flexible synthetic rubber joint and used for avoiding direct contact of two rubber planes. The butterfly valve has the beneficial effects that the thin steel flange is additionally arranged between the butterfly valve and the flexible synthetic rubber joint, and the butterfly valve and the flexible synthetic rubber joint are separated, so that the direct contact of two rubber planes is avoided, the extrusion damage phenomenon is avoided, and the service life of the butterfly valve and the flexible synthetic rubber joint is prolonged. And the reliability of a sealing surface and the stability of screw connection are better ensured, so that the normal work of the oil pump is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, in particular to a shock-absorbing flange structure for a butterfly valve. Background Art

[0002] In the hydraulic system, the connecting pipeline between the hydraulic oil pump and the oil tank is usually composed of a butterfly valve and a flexible synthetic rubber joint. They are connected with screws to open and close the oil circuit and adjust the axial and lateral displacement of the pipeline.

[0003] (See Figure 1 ) The traditional structure is that the butterfly valve 1 and the flexible synthetic rubber joint 2 are directly connected. Since the contact surfaces of the butterfly valve 1 and the flexible synthetic rubber joint 2 are both made of rubber materials, and the rubber material has the characteristics of elasticity, during long-term use, the two rubber planes are squeezed against each other and damaged, and the connecting screws may become loose, affecting the normal operation of the hydraulic oil pump.

[0004] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a shock-absorbing flange structure for a butterfly valve in view of the above-mentioned deficiencies and defects of the prior art to solve the above-mentioned problems.

[0006] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0007] A shock-absorbing flange structure for a butterfly valve comprises a butterfly valve and a flexible synthetic rubber joint matched with the butterfly valve, and is characterized in that it also comprises a flange structure arranged between the butterfly valve and the flexible synthetic rubber joint and used to avoid direct contact between two rubber planes.

[0008] In a preferred embodiment of the present invention, the flange structure is arranged in a circular structure.

[0009] In a preferred embodiment of the present invention, the flange structure is a steel flange.

[0010] In a preferred embodiment of the utility model, through holes cooperating with the butterfly valve and the flexible synthetic rubber joint are arranged at intervals on the outer circumference of the steel flange.

[0011] Due to the adoption of the above technical solution, the beneficial effect of the utility model is that a thin steel flange is added between the butterfly valve and the flexible synthetic rubber joint to isolate the butterfly valve and the flexible synthetic rubber joint, thereby avoiding direct contact between the two rubber planes and preventing extrusion and breakage, thereby better ensuring the reliability of the sealing surface and the stability of the screw connection, thereby effectively ensuring the normal operation of the oil pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the prior art.

[0014] Figure 2 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0016] See also Figure 2 The shock-absorbing flange structure for a butterfly valve shown in the figure includes a butterfly valve 10 and a flexible synthetic rubber joint 20 matched with the butterfly valve 10, and also includes a flange structure 30 arranged between the butterfly valve 10 and the flexible synthetic rubber joint 20 to prevent the two rubber planes from directly contacting each other. The flange structure 30 in this embodiment is arranged in a circular structure.

[0017] The flange structure 30 is preferably a steel flange, and the outer circumference of the steel flange 30 in this embodiment is provided with through holes 31 that cooperate with the butterfly valve 10 and the flexible synthetic rubber joint 20 at intervals in the circumferential direction. Specifically, the butterfly valve 10 and the flexible synthetic rubber joint 20 are also provided with mounting holes 11 and 21. When connected, the bolt assembly passes through the mounting hole 11 of the butterfly valve 11, the through hole 31 of the steel flange 31, and the mounting hole 21 of the flexible synthetic rubber joint 20 in sequence, so that the three are connected.

[0018] The utility model adds a thin steel flange 30 between the butterfly valve 10 and the flexible synthetic rubber joint 20 to isolate the butterfly valve 10 and the flexible synthetic rubber joint 20, thereby avoiding direct contact between the two rubber planes and preventing the occurrence of extrusion damage, thereby better ensuring the reliability of the sealing surface and the stability of the screw connection, thereby effectively ensuring the normal operation of the oil pump.

[0019] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A shock-absorbing flange structure for a butterfly valve, comprising a butterfly valve and a flexible synthetic rubber joint matched with the butterfly valve, characterized in that: It also includes a flange structure which is arranged between the butterfly valve and the flexible synthetic rubber joint and is used to avoid direct contact between two rubber planes.

2. The shock-absorbing flange structure for a butterfly valve according to claim 1, characterized in that: The flange structure is arranged in a circular structure.

3. The shock-absorbing flange structure for a butterfly valve according to claim 1, characterized in that: The flange structure is a steel flange.

4. The shock-absorbing flange structure for a butterfly valve according to claim 3, characterized in that: The outer circumference of the steel flange is provided with through holes which cooperate with the butterfly valve and the flexible synthetic rubber joint at intervals in the circumferential direction.

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