CN201281166Y - An anti-clogging thermostatic valve - Google Patents

Abstract

The utility model relates to an anti-blocking thermostatic valve, which comprises a valve body and a valve core assembly. The inner wall of the valve cavity of the valve body is respectively provided with an annular cold water cavity and a hot water cavity. The cold water cavity is located above the hot water cavity. The spool assembly includes the temperature sensing rod that the piston presses down and the spring that pushes the piston upward. There is a water flow channel in the axial direction inside the piston. The lower part of the piston is the top cylinder in contact with the spring, the wall of the top cylinder is provided with a water inlet hole connecting the inside and outside, and the bottom of the valve chamber is a mixing water chamber. The thermostatic valve of the utility model has a compact structure and can flow The channel design is reasonable, the water flow resistance is small, the water supply temperature and flow are stable, and the water flow channel will not be blocked even if it is used for a long time.

Description

An anti-clogging thermostatic valve

technical field

The utility model relates to a water valve, in particular to an anti-blocking thermostatic valve.

Background technique

The main structure of the known thermostatic water valve includes a valve body. The valve body is provided with a cold water inlet, a hot water inlet and an outlet. When entering the valve body from the hot water inlet channel, the water flows through the gap of the return spring of the valve core assembly, the water flow resistance is large, and the hot water flow is unstable. In addition, the boiler scale and other debris brought by the hot water supply It is easy to adhere to the spring and cause blockage, resulting in failure of the thermostatic valve function.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a thermostatic valve with reasonable flow channel design, small water flow resistance, compact structure and anti-clogging.

The technical scheme adopted in the utility model is:

An anti-clogging thermostatic valve, comprising a valve body and a valve core assembly, the inner wall of the valve cavity of the valve body is respectively provided with an annular cold water chamber and a hot water chamber, the cold water chamber is located above the hot water chamber, and the valve core assembly includes The piston presses down the temperature-sensing rod and the spring pushes the piston up. There is a water flow channel in the axial direction of the piston. The top and middle of the piston are respectively equipped with upper and lower flanges to control the water intake of cold and hot water. The lower part is the top cylinder in contact with the spring, the cylinder wall of the top cylinder is provided with a water inlet hole communicating with the inside and outside, and the bottom of the valve chamber is a mixing water chamber.

The beneficial effect of the utility model is that: the lower part of the piston is a top cylinder with a water inlet hole. When working, hot water flows from the ring-shaped hot water chamber through the water inlet hole into the mixing water chamber and mixes with cold water to provide heat at a suitable temperature. Water, the thermostatic valve of the utility model has compact structure, reasonable flow channel design, small water flow resistance, stable water supply temperature and flow rate, and the water flow channel will not be blocked even if it is used for a long time.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a sectional structure diagram of the utility model.

Detailed ways

Referring to Figure 1 and Figure 2, an anti-clogging thermostatic valve includes a valve body 1 and a valve core assembly, the inner wall of the valve chamber 11 of the valve body 1 is respectively provided with an annular cold water chamber 12 and a hot water chamber 13, the cold water chamber 12 Located above the hot water chamber 13, the spool assembly includes a piston 2, a temperature sensing rod 3 that presses the piston down, and a spring 4 that pushes the piston upward. A water flow channel 21 is arranged axially inside the piston 2. The middle part is respectively provided with upper and lower flanges 22, 23 to control the water intake of cold and hot water. The lower part of the piston 2 is a top cylinder 24 in contact with the spring 4. The water inlet hole 25, the bottom of the valve cavity 11 is the mixing water cavity 14.

When working, external cold water enters from the cold water chamber 12, flows into the mixing water chamber 14 after passing through the water flow channel 21 inside the piston 2, and hot water enters from the hot water chamber 13, flows into the mixing water chamber 14 after passing through the water inlet hole 25, Cold and hot water are mixed in the mixing water chamber to supply constant temperature water to the rear faucet. Constant temperature control principle: the temperature sensing package 31 of the temperature sensing rod 3 is located at the mixing water chamber 14, when the water temperature at the mixing water chamber 14 is too high, the mud-like temperature sensing material inside the temperature sensing rod expands, and the other end of the temperature sensing rod The telescopic rod 32 is pushed outward, because the telescopic rod is against the top of the valve cavity 11, so, under the push of the reaction force of the telescopic rod, the temperature sensing rod 3 and the piston 2 are subjected to a downward force, which overcomes the force of the spring 4 The elastic force of the piston 2 moves downward, and the opening between the upper flange 22 of the piston 2 and the cold water chamber 12 increases, so that more cold water enters the mixing water chamber 14, and at the same time, the lower flange 23 of the piston 2 and the hot water The openings between the chambers 13 are closed to reduce the hot water flowing into the mixing water chamber 14 . Conversely, when the water temperature is too low, the telescopic rod of the temperature sensing rod shrinks, and the piston moves upward under the action of the spring, so that the hot water inlet increases, thereby making the water in the mixing chamber 14 maintain a relatively stable temperature.

As a further improvement of the utility model, an annular sealing ring 5 is provided below the hot water chamber 13, and the top 51 of the sealing ring 5 cooperates with the lower flange 23 to seal, so that the sealing performance is better when the hot water is turned off.

The above-mentioned sealing ring will be under the pressure of the piston top cylinder during use. In this design, a metal ring 52 is sleeved inside the sealing ring 5. Since the metal ring is a rigid material, it plays a supporting role for the sealing ring 5, so that the sealing ring will not Due to the force, it shrinks to the middle of the valve cavity, which affects its function.

Further, a buffer spring 6 is arranged between the temperature sensing rod 3 and the piston 2, which improves the impact resistance of the valve core assembly and makes the thermostatic valve have a longer life.

Further, the valve body at the top of the temperature sensing rod 3 is provided with an adjusting mandrel assembly 7, and the lower end of the mandrel assembly 7 is in contact with the telescopic rod of the temperature sensing rod, and the user can adjust the depth of the mandrel assembly as required. Different pressures are applied to adjust the temperature value controlled by the thermostatic valve.

The above is only the preferred implementation of the utility model, and it does not constitute a limitation to the protection scope of the utility model, as long as the purpose of the utility model is realized by substantially the same means, all should belong to the protection scope of the utility model.

Claims (5)

1. An anti-clogging thermostatic valve, comprising a valve body (1) and a valve core assembly, characterized in that: the inner wall of the valve chamber (11) of the valve body (1) is respectively provided with an annular cold water chamber (12) and a hot water chamber. The water chamber (13), the cold water chamber (12) is located above the hot water chamber (13), and the valve core assembly includes a piston (2), a temperature sensing rod (3) that presses the piston down, and a rod that pushes the piston up. The spring (4), the piston (2) is axially provided with a water flow channel (21), the top and middle of the piston are respectively provided with upper and lower flanges (22, 23) for controlling the water intake of cold and hot water, and the piston (2) The lower part of the top tube (24) is in contact with the spring (4). The wall of the top tube (24) is provided with a water inlet (25) communicating with the inside and outside of the valve chamber (11). The bottom of the valve chamber (11) is a mixed water cavity (14). 2. An anti-clogging thermostatic valve according to claim 1, characterized in that: an annular sealing ring (5) is provided under the hot water chamber (13); the top (51) of the sealing ring (5) Cooperate with the lower flange (23) for sealing. 3. The anti-clogging thermostatic valve according to claim 1, characterized in that: a metal ring (52) is sleeved inside the sealing ring (5). 4. The anti-clogging thermostatic valve according to claim 1, characterized in that: a buffer spring (6) is arranged between the temperature-sensing rod (3) and the piston (2). 5. The anti-clogging thermostatic valve according to claim 1, characterized in that: the valve body at the top of the temperature-sensing rod (3) is provided with an adjusting mandrel assembly (7).

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