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Double-wheel double-control manual gate valve and operation method thereof

A manual gate and gate technology, used in valve operation/release devices, sliding valves, chemical instruments and methods, etc., can solve problems such as short service life of valves, and achieve long service life, reliable sealing performance, and labor-saving operation. Effect

Pending Publication Date: 2021-12-21
张辛悦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the above-mentioned prior art, the present invention proposes a double-wheel double-control manual gate valve after careful development and repeated tests. This technology not only improves the sealing reliability of the valve, but also solves the problem of short service life of the valve.

Method used

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  • Double-wheel double-control manual gate valve and operation method thereof
  • Double-wheel double-control manual gate valve and operation method thereof
  • Double-wheel double-control manual gate valve and operation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Figure 1, figure 2 As shown, a double-wheel double-control manual gate valve includes a gate lifting hand wheel 1; a valve stem 3; a gate 4; a valve body 5; an end cover 6; a seal 7; K is the flushing inlet; F is the flushing discharge , the gate lifting hand wheel 1 is connected with the gate 4 through the valve stem 3, and the valve stem is driven by the screw drive pair to raise or lower the gate; one end of the end cover 6 is connected with the valve body 5, and the other end of the end cover 6 is provided with a The joint hole and sealing end face of the pipe flange connection. The valve body 5 is provided with a driving gear 11, a driven gear 10, and a movable sealing ring 8. The driving gear 11 and the driven gear 10 form a gear transmission pair, and the movable sealing ring 8 and the driven gear 10 form a spiral transmission pair; the sealing The part 7 is fixedly arranged on the movable sealing ring 8 corresponding to the gate sealing surface; the valve body...

Embodiment 2

[0034] As shown in Figure 3, a double-wheel double-control manual gate valve, the driving gear is provided with one, and the passive gear is provided with one, the driving gear drives the passive gear, and the passive gear is arranged on the gate On one side, the movable sealing ring and the driven gear are correspondingly arranged on the same side of the gate to form a screw transmission pair; other structures are the same as in Embodiment 1.

Embodiment 3

[0036] As shown in Figure 4, a double-wheel double-control manual gate valve, the driving gear 11 and the driven gear 10 are set as a cylindrical gear structure, the driven gear 10 is set as an external ring gear structure, and is provided with an internal thread structure, the ring gear and the internal thread The structure is concentric; two driving gears 11 are connected in series on the same transmission shaft, and the transmission shaft is connected with a common mechanical transmission mechanism and a seal moving handwheel 2, or a ratchet handle 12; corresponding to the two driving gears 11, two Passive gear 10, the two driven gears are respectively arranged on both sides of the gate 4; the movable seal ring is arranged on both sides of the gate corresponding to the driven gear; the driven gear and the movable seal ring respectively form a screw transmission pair, and the two sides of the gate The transmission direction of screw drive pair is opposite; Others are the same...

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Abstract

The invention discloses a double-wheel double-control manual gate valve which comprises a valve rod, a gate plate lifting hand wheel, a valve body, a flashboard, a sealing piece and an end cover, wherein a driving gear, a driven gear and a moving sealing ring are arranged in the valve body, the driving gear and the driven gear form a gear transmission pair, and the moving sealing ring and the driven gear form a spiral transmission pair; the sealing piece is fixedly arranged on the moving sealing ring; a sealing piece moving hand wheel is arranged outside the valve body and connected with the driving gear through a transmission shaft; the sealing piece can be controlled by the sealing piece moving hand wheel to translate along the axis direction, and the sealing piece firstly leaves the sealing surface of the flashboard before the flashboard moves; and after the flashboard moves in place, the sealing piece moves back and compresses the sealing surface of the flashboard. For the double-wheel double-control manual gate valve, the sealing performance of the flashboard is more reliable, more labor is saved in operation, and the service life of a gate valve is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a double-wheel double-control manual gate valve and an operating method. Background technique [0002] The gate valve and ball valve currently in use in the market have a sealing structure in which the seal is fixed in the valve body. This structure has the following disadvantages: ① When the valve is opened, because the seal is pressed tightly on the sealing surface of the disc, it takes a lot of time to move the disc. Overcome the frictional resistance from the seal, and the frictional resistance multiplies with the increase of the fluid pressure in the pipe and the diameter of the valve, resulting in an increase in the opening and closing resistance of the valve, and the seal is easily worn by the valve clack or by the valve clack. Cut edges. ②The inner cavity of the valve is easily blocked by the sediment in the fluid (such as mud and ore slurry), which increases ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/16F16K31/50F16K31/53F16K31/60B08B9/032
CPCF16K3/0227F16K3/16F16K31/50F16K31/53F16K31/60B08B9/032
Inventor 苏航张辛悦
Owner 张辛悦