CN210770424U - Plug-free electromechanical thermostatic valve - Google Patents

Abstract

The utility model discloses a plug-free mechanical thermostatic valve, which comprises a casing, wherein a thermal expansion valve, a piston, a piston sleeve, a water-passing valve and a one-way valve are sequentially arranged in the casing from one end to the other end, and the piston is hollow. One end of the thermal expansion valve is inserted into the piston, one end of the piston sleeve is sleeved on the water-passing valve, the other end of the water-passing valve is provided with a sealing gasket, and the piston is inserted into the piston sleeve corresponding to the sealing gasket A pressure spring is sleeved on the piston, the two ends of the pressure spring are respectively in contact with the shoulder on the thermal expansion valve and the front end surface of the piston sleeve, and the one-way valve is fixed at the rear end of the casing. In the utility model, when the hot water reaches the intersection of cold and hot water, the thermostatic valve closes when the temperature is detected, so that the hot water does not run into the cold water pipe. In the field of commercial hot water pipeline circulation, plug-in thermostatic valves can replace traditional solenoid valves and thermostats, eliminating the cumbersome need to pull power and signal lines for thermostats and solenoid valves, and have a longer life and more durable.

Description

Plug-free mechanical thermostatic valve

technical field

The utility model relates to a thermostatic valve, in particular to a plug-free mechanical thermostatic valve.

Background technique

In modern houses, it is generally stipulated that the gas water heater is installed on the balcony, and the hot water is delivered to the room through the hot water pipeline. Due to the large size of the house and the long hot water pipeline, a large amount of cold water should be released every time the hot water is used, and the hot water should be waited for. Water time is long. In this case, a ductless circulation system can be installed to circulate the cold water in the hot water pipe back to the water heater for secondary heating, reducing waste of water.

The traditional pipeless circulation system is to install a one-way valve under the washbasin at the farthest end of the water heater to connect the cold and hot water pipes, and use the cold water pipes for circulation. However, only using the one-way valve will cause the hot water to flow into the cold water pipeline, causing waste.

Installing a thermostatic valve at the junction of cold and hot water can avoid the problem of hot water flowing into the cold water pipe. When the hot water reaches the junction of the cold and hot water, the thermostatic valve will be closed after detecting the temperature, so that the hot water will not run into the cold water pipe. .

In the field of commercial hot water pipeline circulation, plug-in thermostatic valves can replace traditional solenoid valves and thermostats, eliminating the cumbersome need to pull power and signal lines for thermostats and solenoid valves, and have a longer life and more durable.

Utility model content

In order to solve the above problems, the utility model discloses a plug-free mechanical thermostatic valve.

The technical scheme that the utility model adopts for realizing the above-mentioned purpose is:

A plug-free mechanical thermostatic valve, comprising a casing, a thermal expansion valve, a piston, a piston sleeve, a water-passing valve and a one-way valve are sequentially arranged in the casing from one end to the other end, the piston is hollow, and the One end of the thermal expansion valve is inserted into the piston, one end of the piston sleeve is sleeved on the water-passing valve, and the other end of the water-passing valve is provided with a sealing gasket, and the piston is inserted into the piston sleeve corresponding to the sealing gasket A pressure spring is sleeved on the piston, two ends of the pressure spring are respectively in contact with the shoulder on the thermal expansion valve and the front end surface of the piston sleeve, and the one-way valve is fixed on the rear end of the casing.

The inner diameter of the piston is smaller than the diameter of the shoulder on the thermal expansion valve so that the shoulder can drive the piston to move.

The casing includes a front casing and a rear casing that are matched, the rear end of the front casing is screwed with the front end of the front casing, and a first sealing groove is provided on the outer side of the rear end of the front casing. A first sealing ring is sleeved on the first sealing groove corresponding to the front end of the rear casing, and the first sealing ring prevents leakage at the joint of the front casing and the rear casing.

The inner side of the front end of the piston sleeve is provided with a second sealing groove, and a second sealing ring is arranged in the second sealing groove corresponding to the piston, and the second sealing ring prevents leakage at the contact point between the front end of the piston and the front end of the piston sleeve.

A limit protrusion is provided on the outer side of the middle part of the piston corresponding to the front end of the piston sleeve to prevent the piston from falling off the piston sleeve.

The water-passing valve includes a water-passing valve body, a plurality of water-passing holes are distributed on the wall surface of the water-passing valve body, and the sealing gasket is fixed on the rear end of the water-passing valve body. When the hot water passes through, the valve core of the thermal expansion valve is heated and expands to push the piston, so that the piston is pressed against the sealing gasket, thereby blocking the hot water passage, so that the hot water no longer passes through the plug-in-free mechanical thermostatic valve. When the temperature of the water in contact with the valve core of the thermal expansion valve is lower than 35℃, the valve core of the thermal expansion valve shrinks, the pressure spring drives the piston to reset, and the water circuit is opened again, and the water below 35℃ can pass through this plug-free mechanical thermostatic valve.

The inner side of the front end of the water-passing valve body is provided with a third sealing groove, and a third sealing ring is arranged in the third sealing groove corresponding to the piston to avoid leakage at the joint between the rear end of the piston and the water-passing valve body.

A fourth sealing groove is arranged on the outer periphery of the rear end of the one-way valve, and a fourth sealing ring is arranged in the fourth sealing groove corresponding to the rear end of the rear casing to avoid the connection between the one-way valve and the rear casing. Leaks at seams.

The other end of the thermal expansion valve is provided with a regulating valve for adjusting the thermal expansion valve to select the water temperature that the water channel communicates with.

The front end wall of the piston is provided with an opening. When the rear end of the piston is not pressed against the sealing gasket, the water flow can flow out of the plug-in-free mechanical thermostatic valve through the one-way valve, the water hole, the rear end of the piston through hole, and the opening of the front end of the piston.

The beneficial effects of the utility model are as follows: the structure design of the utility model is reasonable and ingenious, which avoids the problem of hot water flowing into the cold water pipeline. When the hot water reaches the intersection of the cold and hot water, the thermostatic valve will be closed immediately after detecting the temperature, so that the hot water will not run away. into the cold water pipe. In the field of commercial hot water pipeline circulation, plug-in thermostatic valves can replace traditional solenoid valves and thermostats, eliminating the cumbersome need to pull power and signal lines for thermostats and solenoid valves, and have a longer life and more durable.

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Figure 2 is a cross-sectional view of the present invention.

Detailed ways

1 and 2, this embodiment provides a plug-free mechanical thermostatic valve, which includes a housing, and the housing is provided with a thermal expansion valve 1, a piston 2, The piston sleeve 3, the water-passing valve 4 and the one-way valve 5, the piston 2 is hollow, one end of the thermal expansion valve 1 is inserted into the piston 2, and one end of the piston sleeve 3 is sleeved on the water-passing valve 4. The other end of the water valve 4 is provided with a sealing gasket 42, the piston 2 is inserted into the piston sleeve 3 corresponding to the sealing gasket 42, and a pressure spring 6 is sleeved on the piston 2. The ends are respectively in contact with the shoulder 11 on the thermal expansion valve 1 and the front end surface of the piston sleeve 3 , and the one-way valve 5 is fixed to the rear end of the casing.

The inner diameter of the piston 2 is smaller than the diameter of the shoulder 11 on the thermal expansion valve 1 , so that the shoulder 11 can drive the piston 2 to move.

The casing includes a front casing 71 and a rear casing 72 which are matched, the rear end of the front casing 71 is screwed with the front end of the front casing 71, and the rear end of the front casing 71 is provided with a first A first sealing ring 81 is sleeved on the first sealing groove corresponding to the front end of the rear casing 72 . The first sealing ring 81 prevents leakage at the joint between the front casing 71 and the rear casing 72 .

The inner side of the front end of the piston sleeve 3 is provided with a second sealing groove, and a second sealing ring 82 is arranged in the second sealing groove corresponding to the piston 2 . The second sealing ring 82 prevents the front end of the piston 2 from contacting the front end of the piston sleeve 3 There is leakage.

A limiting protrusion 21 is provided on the outer side of the middle portion of the piston 2 corresponding to the front end of the piston sleeve 3 to prevent the piston 2 from falling off from the piston sleeve 3 .

The water-passing valve 4 includes a water-passing valve body 41 , a plurality of water-passing holes 411 are distributed on the wall surface of the water-passing valve body 41 , and the sealing gasket 42 is fixed to the rear end of the water-passing valve body 41 . When the hot water passes through, the valve core of the thermal expansion valve 1 is heated and expands to push the piston 2, so that the piston 2 is pressed against the sealing gasket 42, thereby blocking the hot water passage, so that the hot water no longer passes through the plug-free mechanical thermostatic valve. . When the temperature of the water contacted by the valve core of the thermal expansion valve 1 is lower than 35°C, the valve core of the thermal expansion valve 1 shrinks, the pressure spring 6 drives the piston 2 to reset, and the water circuit is opened again. Thermostatic valve. Through the water temperature can be adjusted through the regulating valve 9 .

The inner side of the front end of the water-passing valve body 41 is provided with a third sealing groove, and a third sealing ring 83 is arranged in the third sealing groove corresponding to the piston 2 to avoid the connection between the rear end of the piston 2 and the water-passing valve body 41 . Leaks at seams.

The outer periphery of the rear end of the check valve 5 is provided with a fourth sealing groove, and a fourth sealing ring 84 is arranged in the fourth sealing groove corresponding to the rear end of the rear housing 72 to prevent the check valve 5 from being connected to the rear end. The seam of the shell 72 is leaking.

The other end of the thermal expansion valve 1 is provided with a regulating valve 9 for adjusting the thermal expansion valve 1 to select the water temperature of the water passage.

The front end wall of the piston 2 is provided with an opening 22 . When the rear end of the piston 2 is not pressed against the sealing gasket 42, the water flow can flow out of the plug-free mechanical thermostatic valve through the one-way valve 5, the water hole 411, the rear end of the through hole of the piston 2, and the front opening 22 of the piston 2.

The structure design of the utility model is reasonable and ingenious, which avoids the problem of hot water flowing into the cold water pipe. When the hot water reaches the intersection of the cold and hot water, the thermostatic valve closes when the temperature is detected, so that the hot water does not run into the cold water pipe. In the field of commercial hot water pipeline circulation, plug-in thermostatic valves can replace traditional solenoid valves and thermostats, eliminating the cumbersome need to pull power and signal lines for thermostats and solenoid valves, and have a longer life and more durable.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical means and technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or be modified to equivalent changes. equivalent example. Therefore, all equivalent changes made according to the shape, structure and principle of the present utility model without departing from the technical solution of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides an exempt from to insert electromechanical thermostatic valve, its includes the casing, its characterized in that: the water passing valve is characterized in that a thermal expansion valve, a piston sleeve, a water passing valve and a one-way valve are sequentially arranged in the shell from one end to the other end, the piston is hollow, one end of the thermal expansion valve is inserted into the piston, one end of the piston sleeve is sleeved on the water passing valve, a sealing gasket is arranged at the other end of the water passing valve, the piston is inserted into the piston sleeve corresponding to the sealing gasket, a pressure spring is sleeved on the piston, two ends of the pressure spring are respectively abutted to the front end faces of a convex shoulder on the thermal expansion valve and the front end face of the piston sleeve, and the one-way valve is fixed at the rear end.

2. The plug-free electromechanical thermostatic valve of claim 1, wherein an inner diameter of the piston is smaller than a diameter of a shoulder on the thermal expansion valve.

3. The plug-free electromechanical thermostatic valve according to claim 1 or 2, wherein the housing comprises a front housing and a rear housing which are matched with each other, a rear end of the front housing is in threaded connection with a front end of the front housing, a first sealing groove is formed on the outer side of the rear end of the front housing, and a first sealing ring is sleeved on the first sealing groove and corresponds to the front end of the rear housing.

4. The plug-free electromechanical thermostatic valve according to claim 1 or 2, wherein a second sealing groove is formed inside the front end of the piston sleeve, and a second sealing ring is arranged in the second sealing groove and corresponds to the piston.

5. The plug-free electromechanical thermostatic valve according to claim 1 or 2, wherein a limiting protrusion is provided on the outer side of the middle portion of the piston corresponding to the front end of the piston sleeve.

6. The plug-free electromechanical thermostatic valve according to claim 1 or 2, wherein the water passing valve comprises a water passing valve body, a plurality of water passing holes are distributed on the wall surface of the water passing valve body, and the sealing gasket is fixed at the rear end of the water passing valve body.

7. The plug-free electromechanical thermostatic valve according to claim 6, wherein a third sealing groove is formed in the inner side of the front end of the water passing valve body, and a third sealing ring is arranged in the third sealing groove and corresponds to the piston.

8. The plug-free electromechanical thermostatic valve according to claim 3, wherein a fourth seal groove is formed in an outer periphery of a rear end of the check valve, and a fourth seal ring is disposed in the fourth seal groove and corresponds to a rear end of the rear housing.

9. The plug-free electromechanical thermostatic valve according to claim 1 or 2, wherein an adjusting valve for adjusting the thermal expansion valve is provided on the other end of the thermal expansion valve.

10. A plug-free electromechanical thermostatic valve according to claim 1 or 2, wherein the piston is provided with an opening in a front end wall thereof.

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