Internal threaded connection brake valve

Abstract

The invention discloses an internal threaded connection brake valve comprising a three-way valve body and a wedge-shaped flashboard. The three-way valve body comprises a water inlet, a water outlet and a valve neck. The water inlet and the water outlet are formed at two ends of the three-way valve body; and a flashboard operation opening is formed on the valve neck. Internal threads are formed at the water inlet and the water outlet of the three-way valve body respectively. A valve base with a V-shaped cross section is formed in a valve cavity of the three-way valve body. A cavity is formed inside the internal threads of the water inlet and the water outlet of the three-way valve body. The cavity is of a tubular structure with an inner end face which is a slope. The internal threads are connected with the brake valve; the cavity is formed inside the internal threads of the three-way valve body; the inner end face of the cavity 11 is parallel to the slope of the valve base; stress equilibrium of various points and overall performance are guaranteed; material consumption is reduced; and weight of the valve body is controlled.

Description

technical field [0001] The invention relates to a gate valve, in particular to an internal thread connection gate valve with low processing cost and small weight. Background technique [0002] In the existing gate valves, the spool is usually in the shape of a plate, which is commonly referred to as a gate. Use the lift of the gate to control the opening and closing of the valve. When the gate valve is closed, it is sealed by the gate. Such as the "soft seal gate valve" provided by Chinese patent 982294522, it includes a valve body, a sealing seat, a gate and a gate operating mechanism, the upper half of the sealing seat is semicircular, the lower half is V-shaped, and the gate also has a corresponding corresponding structure. The gate valve is closed by the mutual cooperation between the gate plate and the sealing seat. [0003] figure 1 Shown is a schematic structural diagram of an internal thread connection gate valve in the prior art, such as figure 1 As shown, the...

AI Technical Summary

Problems solved by technology

[0003] figure 1 Shown is a schematic structural diagram of an internal thread connection gate valve in the prior art, such as figure 1 As shown, the internally threaded gate valve in the prior art includes a three-way valve body 1 and a wedge gate. The three-way valve body includes a water inlet 2, a water outlet 3 and a valve neck 4 formed at both ends. The valve The center of the neck is formed at the gate operation port, and at the same time, a packing chamber and a connection structure with the valve cover are formed on the top of the valve neck, and internal threads are respectively formed at the water inlet and outlet of the three-way valve body. The threaded connection structure can improve the connection relationship, but the existing valve body still faces problems such as excessive weight and high cost. How to control the weight and cost on the basis of ensuring various performances is an urgent problem to be solved

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