Internally debuggable constant-temperature valve having adjustable KV value

Abstract

The invention discloses an internally debuggable constant-temperature valve having an adjustable KV value. The internally debuggable constant-temperature valve comprises a valve body, a valve seat, avalve deck, a linkage rod, a piston, a reset spring, a guiding cap, a nut and an adjusting column, wherein an inner cavity with a polygonal cross section is formed in the valve deck, an opening of theinner cavity is downward, the guiding cap is arranged in the cavity and is provided with a third through hole extending in the vertical direction, the guiding cap abuts against the upper end the reset spring, the linkage rod upwards extends out of the third through hole, the nut is arranged in the inner cavity, the outer cross section of the nut is matched with the cross section of the inner cavity, the nut can be vertically move in the inner cavity, a threaded end matched with the nut is arranged at the lower end of the adjusting column, and the upper end of the adjusting column upwards extends out of a second through hole. According to the internally debuggable constant-temperature valve having the adjustable KV value, due to the fact that the rotation of the nut is limited, extension of the adjusting column extending out of the nut can be adjusted by screwing the adjusting column, accordingly the length of the linkage rod extending into the valve body is changed, and the internallydebuggable constant-temperature valve is simple in structure, lower in production cost and more convenient to implement.

Description

technical field [0001] The invention relates to the technical field of plumbing valves, in particular, to an internal-adjustable KV-value thermostatic valve. Background technique [0002] In traditional winter heating, the indoor temperature is controlled by adjusting the flow of hot water flowing through the radiator through the angle valve, globe valve, thermostatic valve, etc. installed at the radiator inlet. Since the existing technology cannot adjust the KV value, In use, the indoor temperature of some users is too high, and the indoor temperature of some users is too low; although most of the thermostatic valves produced abroad have the function of adjusting the KV value, there are many problems when using in our country, and it is very difficult to adjust the KV value. The reason is that my country uses the top of high-rise buildings to enter the heat medium, and the hot water is very poor, which is easy to cause valve blockage. Therefore, it is difficult to use the mor...

AI Technical Summary

Problems solved by technology

[0002] In traditional winter heating, the indoor temperature is controlled by adjusting the flow of hot water flowing through the radiator through angle valves, stop valves, and thermostatic valves installed at the inlet of the radiator. Since the existing technology cannot adjust the KV value, In use, some users’ indoor temperature is too high, and some users’ indoor temperature is too low; although most of the thermostatic valves produced abroad have the function of adjusting the KV value, there are many problems when used in our country, and the KV value adjustment is very difficult. The reason is that in my country, the heating medium is supplied from the top of high-rise buildings, and the hot water is very inferior, which can easily cause valve blockage. Therefore, it is difficult to use the more precise KV adjustment device, resulting in an imbalance in the water conservancy of the heating system and uneven heating.

In the related technology, when adjusting the KV value of the valve, it is usually adjusted on the opposite side of the actuator, which is troublesome to adjust, such as the Chinese invention patent with the announcement number: CN1020622578B, and the Chinese utility model patent with the announcement number: CN202521010U , when adjusting the KV value, a special adjustment mechanism is set on the valve body, and a specific valve body needs to be used to cooperate with the mechanism, the implementation cost is high, and the processing technology is complicated

Images