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Adjustable stop valve

A cut-off valve, adjustable technology, applied in the direction of lifting valves, valve devices, engine components, etc., can solve problems such as difficult cleaning, unfavorable flow adjustment, leakage, etc., and achieve the effect of reducing operating force

Inactive Publication Date: 2014-12-17
SUZHOU FURUN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in applications such as flow adjustment, this type of valve also has the following defects: 1. The switch is heavy and inflexible; 2. The valve stem adopts a raised stem structure, which is not easy to clean, and it is easy to cause leakage after being polished with sandpaper; 3. The valve disc and The valve seat is a straight-through structure, and the flow control is difficult, which is not conducive to flow regulation

Method used

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Embodiment Construction

[0016] The design will be further described below in conjunction with the accompanying drawings of the description.

[0017] like figure 1 , 2 As shown, an adjustable stop valve includes a lock nut 1, a valve stem nut 2, a packing gland 4, and a valve disc 3-1, which is characterized in that: the valve disc 3-1 is a conical valve disc 3- 2.

[0018] The valve clack has a tapered structure, and cooperates with the valve sleeve to form a gradual flow passage, which is easy to adjust the flow rate with the valve clack rising and falling.

[0019] Preferred:

[0020] The above-mentioned adjustable cut-off valve is characterized in that: the taper of the conical disc 3-2 is 30°.

[0021] The above-mentioned adjustable stop valve is characterized in that: the conical valve disc 3-2 is also provided with a pressure guiding hole 8, and the pressure guiding hole 8 runs through the conical valve disc 3-2.

[0022] Pressure guide holes are designed at the valve disc and valve stem t...

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Abstract

The invention discloses an adjustable stop valve. The adjustable stop valve comprises a locking nut, a valve rod nut, a packing gland and a valve flap, wherein the valve flap is a conical valve flap; the conicity of the conical valve flap is 30 degrees; the conical valve flap is also provided with a pressure conducting hole; the pressure conducting hole runs through the conical valve flap; a bearing is arranged at the position of the valve rod nut; a bearing block is directly matched with a valve bonnet; the packing gland is positioned in the bearing block; a dustproof cap is arranged at the position of the locking nut. According to the adjustable stop valve, the flow can be adjusted, the operating potency dimension is reduced, and the dustproof function is also realized.

Description

technical field [0001] The design relates to an adjustable cut-off valve and belongs to the technical field of valves. Background technique [0002] Globe valves are widely used in many fields due to their simple manufacture and low price compared with other valves. However, in applications where the flow rate needs to be adjusted, this type of valve also has the following defects: 1. The switch is heavy and inflexible; 2. The valve stem adopts a raised stem structure, which is not easy to clean, and it is easy to cause leakage after being polished with sandpaper; 3. The disc and The valve seat is a straight-through structure, and the flow control is relatively difficult, which is not conducive to flow regulation. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the purpose of this design is to provide an adjustable cut-off valve, which can adjust the flow rate, reduce the operating force, and has a dust-proof function. [0004] In orde...

Claims

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Application Information

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IPC IPC(8): F16K1/32F16K1/38
CPCF16K1/38F16K1/04F16K1/32
Inventor 张国红
Owner SUZHOU FURUN MACHINERY
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