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Large flap valve water gate rubber sealing part and preparation method thereof

A technology of rubber seals and seals, which is applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve problems such as weak technologies and achieve the effect of strengthening protection

Inactive Publication Date: 2016-08-31
NANJING DONGRUN SPECIAL RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sluice seals are an important part of water conservancy construction. They are key components to ensure the normal operation of the gate airtight water seal. A good gate water seal should have relatively low cost, simple structure, easy operation, good sealing effect, safety, and long service life. , low friction coefficient, etc. To achieve this effect, the structure, materials and preparation methods of the seals are more critical. At present, ordinary rubber seals in China still have defects in the above aspects, and the technology is still relatively weak, which needs further improvement.

Method used

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  • Large flap valve water gate rubber sealing part and preparation method thereof
  • Large flap valve water gate rubber sealing part and preparation method thereof
  • Large flap valve water gate rubber sealing part and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The main body of the rubber seal provided by the present invention is strip-shaped, which can be installed around water holes, gates and other flow channel equipment to play a role of sealing; the structure of its cross section is as follows: figure 1 shown in: The seal is made of figure 1 The lower seal 1 on the left side of the figure 1 The upper seal 2 on the right side of the center is connected to each other; usually, the lower seal 1 is installed on the side facing the gate, water hole and other equipment, and is fixed on these water seal equipment, while the upper seal 2 faces On the outside, the outer sealing device will be attached to the upper seal 2 .

[0034] The design idea of ​​the present invention is mainly: the rubber used in the lower seal 1 belongs to the category with higher hardness, while the rubber used in the upper seal 2 has a lower hardness and greater elasticity. When the unique material with a soft top and hard bottom structure is used, the...

Embodiment 2

[0040] This example is used to illustrate the composition and preparation method of the sealing material.

[0041] Material of upper seal:

[0042] Natural rubber: 100 parts by weight;

[0043] Vulcanizing agent: 3 parts by weight;

[0044] Accelerator: 1.5 parts by weight;

[0045] Zinc oxide: 6 parts by weight;

[0046] Stearic acid: 3 parts by weight;

[0047] N330 carbon black: 25 parts by weight;

[0048] Antiaging agent: 4.5 parts by weight;

[0049] Softener: 10 parts by weight.

[0050] Material of lower seal:

[0051] Natural rubber: 100 parts by weight;

[0052] Vulcanizing agent: 3 parts by weight;

[0053] Accelerator: 1.5 parts by weight;

[0054] Zinc oxide: 6 parts by weight;

[0055] Stearic acid: 3 parts by weight;

[0056] N330 carbon black: 55 parts by weight;

[0057] Antiaging agent: 4.5 parts by weight;

[0058] Softener: 5 parts by weight.

[0059] The vulcanizing agent is sulfur; the accelerator is 2-thiol benzothiazole; the anti-aging ...

Embodiment 3

[0064] This example is used to illustrate the composition and preparation method of the sealing material.

[0065] Material of upper seal:

[0066] Natural rubber: 100 parts by weight;

[0067] Vulcanizing agent: 2 parts by weight;

[0068] Accelerator: 1 part by weight;

[0069] Zinc oxide: 4 parts by weight;

[0070] Stearic acid: 2 parts by weight;

[0071] N330 carbon black: 15 parts by weight;

[0072] Antiaging agent: 3.5 parts by weight;

[0073] Softener: 5 parts by weight.

[0074] Material of lower seal:

[0075] Natural rubber: 100 parts by weight;

[0076] Vulcanizing agent: 2 parts by weight;

[0077] Accelerator: 1 part by weight;

[0078] Zinc oxide: 4 parts by weight;

[0079] Stearic acid: 2 parts by weight;

[0080] N330 carbon black: 45 parts by weight;

[0081] Antiaging agent: 3.5 parts by weight;

[0082] Softener: 2 parts by weight.

[0083] The vulcanizing agent is sulfur; the accelerator is 2-thiol benzothiazole; the anti-aging agent...

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Abstract

The invention provides a large flap valve water gate rubber sealing part and a preparation method thereof and belongs to the technical field of sealing materials. The rubber sealing part is wholly in a strip shape. The section of the rubber sealing part is formed by compounding a lower-layer sealing part body located on one side of the rubber sealing part and an upper-layer sealing part body located on the other side of the rubber sealing part. The Shore hardness of the lower-layer sealing part body is larger than that of the upper-layer sealing part body. The elongation at break of the lower-layer sealing part body is smaller than that of the upper-layer sealing part body. By means of a double-working-face type design structure, two working faces achieve a good buffer effect when a flap valve falls and achieve a good sealing effect in a work state.

Description

technical field [0001] The invention provides a rubber seal for a large flap gate sluice and a preparation method thereof, belonging to the technical field of sealing materials. Background technique [0002] In recent years, the shortage of water, which is the lifeline of human existence, has become one of the key issues of global concern in the new century. For my country, where the per capita water resources account for only about 1 / 4 of the world's average level, it is particularly prominent. The country and the government attach great importance to water issues and water conservancy work. Water resources are already a strategic resource that affects national development and security. Water conservancy construction has already Putting infrastructure first. Sluice seals are an important part of water conservancy construction. They are key components to ensure the normal operation of the gate airtight water seal. A good gate water seal should have relatively low cost, sim...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L91/00C08K13/02C08K3/04C08K3/06C08K3/22C08K5/09F16J15/10
CPCC08L7/00F16J15/102F16J15/108C08L91/00C08K13/02C08K3/04C08K3/06C08K2003/2296C08K5/09
Inventor 江文养王敏
Owner NANJING DONGRUN SPECIAL RUBBER