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High-pressure mud pump sandwiching concrete piston and its manufacturing method

A technology of mud pumps and concrete pistons, which is applied in the field of cloth-filled concrete pistons for sealing high-pressure mud pumps used in construction machinery and its manufacturing field, which can solve the problems of frictional noise hazards between pistons and cylinders, poor high temperature resistance, and short service life. Achieve the effect of enhancing pressure resistance, improving wear resistance and reducing friction

Inactive Publication Date: 2016-05-04
费曼科技(青岛)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-pressure mud pump sandwich concrete piston is an important part of construction engineering and drilling machinery mud delivery pump, which is used for reciprocating sealing in mud and crude oil medium; currently commonly used assembled mud pump pistons are mostly made of pure polyurethane materials, polyurethane Although the product has excellent elasticity and wear resistance, due to its poor high temperature resistance, easy hydrolysis, and large friction coefficient, the pump truck will cause the piston to become soft and sticky when the pump truck is continuously transporting for a long distance, and the seal will fail, and the service life will be short. When working, the piston and the cylinder will produce great frictional noise, which will also cause harm to the surrounding environment and personnel. Therefore, a high-pressure mud pump with a concrete piston that can solve the above problems is needed to meet the actual situation. need

Method used

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  • High-pressure mud pump sandwiching concrete piston and its manufacturing method
  • High-pressure mud pump sandwiching concrete piston and its manufacturing method
  • High-pressure mud pump sandwiching concrete piston and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, the high-pressure mud pump is sandwiched with a concrete piston, and the content ratio of each raw material component is as follows in parts by weight:

[0047] Carboxylated nitrile rubber 100 parts,

[0048] ZnO5 parts,

[0049] SA0.5 copies,

[0050] Anti-aging agent 1 part,

[0051] 40 parts of carbon black,

[0052] 3 parts softener,

[0053] 0.2 parts of sulfur,

[0054] Accelerator 4 parts;

[0055] The anti-aging agent is RD, the softener is DO, and the accelerator is TMTD;

[0056] And it is prepared by the following steps:

[0057] The first step, synthetic rubber: the above raw materials are synthesized into rubber through an internal mixer;

[0058] The second step, molding: the synthetic rubber is molded by an open mill;

[0059] The third step, vulcanization: Put the formed rubber into the mold in the vulcanizer, pressurize the range of 150kgf / ㎝2, raise the temperature to 140°C for 30min, and vulcanize.

[0060] The clo...

Embodiment 2

[0076] Such as figure 2 As shown, the high-pressure mud pump is sandwiched with a concrete piston, and the content ratio of each raw material component is as follows in parts by weight:

[0077] Carboxylated nitrile rubber 100 parts,

[0078] ZnO8 parts,

[0079] SA1 copy,

[0080] Anti-aging agent 2 parts,

[0081] 50 parts of carbon black,

[0082] 5 parts softener,

[0083] 0.5 parts of sulfur,

[0084] Accelerator 6 parts;

[0085] The anti-aging agent is MB, the softener is DOS, and the accelerator is DM;

[0086] And it is prepared by the following steps:

[0087] The first step, synthetic rubber: the above raw materials are synthesized into rubber through an internal mixer;

[0088] The second step, molding: the synthetic rubber is molded by an open mill;

[0089] The third step, vulcanization: put the shaped rubber into the mold of the vulcanizer, pressurize the range of 210kgf / ㎝2, raise the temperature to 150°C for 45min, and vulcanize.

[0090] The cloth-cl...

Embodiment 3

[0106] like image 3 As shown, the high-pressure mud pump is sandwiched with a concrete piston, and the content ratio of each raw material component is as follows in parts by weight:

[0107] Carboxylated nitrile rubber 100 parts,

[0108] ZnO6.5 parts,

[0109] SA0.75 parts,

[0110] Anti-aging agent 1.5 parts,

[0111] 45 parts of carbon black,

[0112] softener 4 parts,

[0113] 0.35 parts of sulfur,

[0114] Accelerator 5 parts;

[0115] The anti-aging agent is 4010NA, the softener is DOA, and the accelerator is BZ;

[0116] And it is prepared by the following steps:

[0117] The first step, synthetic rubber: the above raw materials are synthesized into rubber through an internal mixer;

[0118] The second step, molding: the synthetic rubber is molded by an open mill;

[0119] The third step, vulcanization: put the molded rubber into the mold of the vulcanizer, pressurize the range of 180kgf / ㎝2, raise the temperature to 145°C for 37.5min, and vulcanize.

[0120]...

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Abstract

The invention belongs to the technical field of seal devices and in particular relates to a cloth clamping concrete piston for sealing a high-pressure slurry pump for engineering machinery and a manufacturing method of the piston. The piston comprises the following raw materials by weight parts: 100 parts of carboxylic acrylonitrile butadiene rubber, 5-8 parts of ZnO, 0.5-1 part of SA, 1-2 parts of an anti-ageing agent, 40-50 parts of carbon black, 3-5 parts of a softening agent, 0.2-0.5 part of sulfur and 4-6 parts of an accelerant. The manufacturing method comprises the following steps of synthesizing the rubber, forming, and vulcanizing. According to the piston, the pressure resistance, wear resistance and rebound resilience of the whole product are improved, the force of friction between the concrete piston and a cylinder sleeve is reduced, the size of the root part of the piston is properly increased, the seal property of the root part is improved, and the service life of the piston is prolonged; the piston has the characteristics of high hardness, strength and wear resistance, good rebound resilience and oil resistance, good performance of bonding with fiber fabrics and the like; the wear resistance of the piston is improved, and the piston has the characteristics of long scorch time and good vulcanization flatness.

Description

technical field [0001] The invention belongs to the technical field of sealing devices, and in particular relates to a cloth-filled concrete piston for sealing a high-pressure mud pump used in engineering machinery and a manufacturing method thereof. Background technique [0002] High-pressure mud pump sandwich concrete piston is an important part of construction engineering and drilling machinery mud delivery pump, which is used for reciprocating sealing in mud and crude oil medium; currently commonly used assembled mud pump pistons are mostly made of pure polyurethane materials, polyurethane Although the product has excellent elasticity and wear resistance, due to its poor high temperature resistance, easy hydrolysis, and large friction coefficient, the pump truck will cause the piston to become soft and sticky when the pump truck is continuously transporting for a long distance, and the seal will fail, and the service life will be short. When working, the piston and the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L13/00C08K13/02C08K3/04C08K3/22C08K3/06F04B53/14
Inventor 王东梅蔡涌邵福庆
Owner 费曼科技(青岛)有限公司
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