High and low temperature cooling water mechanical temperature control valve feedback indicating device

Abstract

The utility model relates to the technical field of temperature control valves, in particular to a high and low temperature cooling water mechanical temperature control valve feedback indicating device which comprises a valve body, a temperature sensing structure and a valve core, the temperature sensing structure can drive the valve core to slide in the valve body to adjust the flow of a cold inlet and a hot inlet, and an indicating valve rod is arranged on the valve core. One end of the indicating valve rod penetrates through the outer side of the valve body and is provided with an indicating mechanism used for displaying the opening degree of the valve element. The indicating mechanism comprises a numerical value indicating assembly and a light indicating assembly. The current opening and closing degree of the valve element can be checked through the numerical value indication assembly in the indication mechanism, the current opening and closing degree of the valve element can also be roughly understood through different illumination colors of the light indication assembly, especially during troubleshooting, only a color lamp which does not conform to the current state needs to be found, and the application range is wider.

Description

Technical Field

[0001] This utility model relates to the field of temperature control valve technology, and more specifically to a feedback indication device for a mechanical temperature control valve for high and low temperature cooling water. Background Technology

[0002] A thermostatic valve, also known as a temperature control valve, is a type of valve used to control the temperature of a fluid medium. It is commonly used in heating, cooling, and air conditioning systems. By controlling the valve's opening, the flow rate of the medium is adjusted, thereby controlling the temperature. A thermostatic valve typically consists of a valve body, valve core, and sealing gaskets. Common types include self-operated thermostatic valves and electrically powered thermostatic valves.

[0003] The advantage of a self-operated temperature control valve is that it does not require external power. Instead, it relies on a built-in temperature control element to automatically adjust the temperature. The temperature control element is made of an expansion-sensitive material that is highly sensitive to temperature changes. Therefore, when the medium experiences a temperature difference, the temperature control element can automatically control the lifting and lowering of the reset valve stem, thereby driving the valve core to seal and open / close the valve body.

[0004] However, current self-regulating temperature control valves are all closed, and staff cannot see the opening and closing degree of the valve core inside the temperature control valve. Once a system circuit failure occurs, tracing the fault is time-consuming and difficult. Utility Model Content

[0005] In response to the shortcomings of existing technologies, the inventors have developed a feedback indicator device for a mechanical temperature control valve for high and low temperature cooling water through long-term practical research. This device solves the problem that the closed design of current self-operated temperature control valves prevents operators from seeing the opening and closing degree of the valve core inside the valve, making it time-consuming and difficult to trace the fault when a system circuit failure occurs.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A feedback indicating device for a mechanical temperature control valve for high and low temperature cooling water includes a valve body. A temperature sensing structure and a valve core are disposed within the valve body. The temperature sensing structure drives the valve core to slide within the valve body to adjust the flow rates at the cold and hot inlets. An indicating valve stem is disposed on the valve core. One end of the indicating valve stem extends to the outside of the valve body and is provided with an indicating mechanism for displaying the degree of valve core opening and closing. The indicating mechanism includes a numerical indicating component and a light indicating component. The numerical indicating component includes an indicating shell mounted on the valve body. A sliding groove is formed on the side wall of the indicating shell along the length of the indicating valve stem. An indicator plate is slidably installed in the groove, and the indicator plate is fixedly connected to the indicator valve stem. A scale is provided on the side wall of the indicator housing corresponding to the groove. The light indicator assembly includes a transparent lampshade and a spotlight installed at the end of the indicator housing away from the valve body. A rotating plate is rotatably installed on a fixed axis inside the transparent lampshade. A screw is threadedly connected to the axis of the rotating plate. The screw passes through the indicator housing and is connected to the indicator valve stem. Multiple through slots are opened around the screw on the rotating plate. A light sheet of a different color is installed in each through slot. The spotlight is located on one side of the screw and the lamp head faces the rotating plate.

[0008] Preferably, the through slot is arranged in a fan shape.

[0009] Preferably, the sidewall of the indicator housing has two symmetrical grooves, and the two ends of the indicator plate are respectively inserted into the grooves on the corresponding sides.

[0010] Preferably, the valve body is provided with a connected inlet chamber and an outlet chamber, which form a T-shaped structure. The inlet chamber has a hot inlet at the upper part of one end and a cold inlet at the lower part of the other end. The outlet chamber has a liquid outlet. The valve core is connected to the valve body through an elastic component, and the two ends of the valve core are respectively connected to the corresponding end of the inlet chamber. The valve core has multiple through holes. The indicator valve rod passes through the valve core and extends into the outlet chamber, where it is connected to the temperature sensing structure.

[0011] Preferably, the temperature sensing structure includes a receiving shell connected to the valve body, the receiving shell containing a temperature bulb, and a pressure plate disposed therein at the end of the indicating valve stem away from the indicating mechanism, the pressure plate being in contact with the temperature bulb.

[0012] Preferably, both ends of the water inlet chamber are provided with baffles, one of the baffles has a hot inlet at the upper part and the other baffle has a cold inlet at the lower part, and the two ends of the valve core are respectively connected to the baffles on the corresponding side.

[0013] Preferably, the elastic component includes a reset valve stem and a spring. A reset cavity is provided on the valve body. One end of the reset valve stem is fixedly connected to the valve core, and the other end extends into the reset cavity and is provided with a fixing plate. A spring is sleeved on the reset valve stem. One end of the spring is connected to the fixing plate, and the other end is connected to the inner wall of the reset cavity.

[0014] Preferably, a partition plate is fixedly installed inside the water outlet chamber, and multiple partition holes are opened through the partition plate. The indicator valve stem passes through the partition plate and is connected to the temperature sensing structure.

[0015] The beneficial effects of this utility model are:

[0016] The numerical indicator component in the indicator mechanism can be used to view the current valve core opening degree, and the different light colors of the light indicator component can also be used to roughly understand the current valve core opening degree. Especially when troubleshooting, you only need to find the color light that does not match the current state, which has a wider range of applications. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a front view structural diagram of the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the light indicator component of this utility model after removing half of the transparent lampshade.

[0021] In the attached image:

[0022] 1-Valve body, 12-High temperature port, 121-Hot inlet, 122-Valve core, 123-Reset valve stem, 124-Spring, 125-Fixing plate, 126-Through hole, 13-Low temperature port, 131-Cold inlet, 132-Baffle plate, 14-Liquid outlet, 141-Containing shell, 142-Temperature bulb, 143-Pressure plate, 15-Divider plate, 2-Indicator shell, 21-Indicator plate, 22-Indicator valve stem, 221-Screw, 3-Transparent lampshade, 31-Rotating plate, 32-Lamp sheet, 33-Spotlight, 4-Water inlet chamber, 5-Water outlet chamber. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0024] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0025] See Figures 1-4 This utility model discloses a feedback indicator device for a mechanical temperature control valve for high and low temperature cooling water, comprising a valve body 1, within which a temperature sensing structure and a valve core 122 are disposed. The temperature sensing structure can drive the valve core 122 to slide within the valve body 1 to adjust the flow rates of the cold inlet 131 and the hot inlet 121. The valve body 1 is a three-way valve, with a low-temperature port 13, a high-temperature port 12, and a liquid outlet port.

[0026] A valve core 122 is provided with an indicator valve stem 22, one end of which extends through to the outside of the valve body 1 and is provided with an indicator mechanism for displaying the degree of opening and closing of the valve core 122. The indicator mechanism includes a numerical indicator component and a light indicator component.

[0027] The numerical indicating assembly includes an indicating housing 2 mounted on the valve body 1. A groove is formed on the side wall of the indicating housing 2 along the length of the indicating valve stem 22. An indicating plate 21 is slidably disposed within the groove and is fixedly connected to the indicating valve stem 22. A scale is provided on the side wall of the indicating housing 2 corresponding to the groove. In this embodiment, two grooves are symmetrically formed on the side wall of the indicating housing 2, and the two ends of the indicating plate 21 are respectively inserted into the groove on the corresponding side.

[0028] The light indicator assembly includes a transparent lampshade 3 and a spotlight 33 mounted on the end of the indicator housing 2 away from the valve body 1. A rotating plate 31 is mounted inside the transparent lampshade 3, rotating around a fixed axis. A screw 221 is threaded onto the axis of the rotating plate 31, and the screw 221 passes through the indicator housing 2 and connects to the indicator valve stem 22. Multiple through slots are formed around the screw 221 on the rotating plate 31, arranged in a fan shape. A different colored light sheet 32 ​​is installed in each through slot. The spotlight 33 is located on one side of the screw 221, with its lamp head facing the rotating plate 31.

[0029] In this embodiment, four through slots are provided, and each through slot is equipped with a light sheet 32 ​​of a different color. Therefore, there are four light sheets 32 of different colors, which correspond to four scales and represent four opening and closing degrees of the valve core 122. Different numbers of through slots can be set according to actual needs.

[0030] In this embodiment, the valve body 1 has a connected inlet chamber 4 and an outlet chamber 5, forming a T-shaped structure. A hot inlet 121 is located at the upper part of one end of the inlet chamber 4, and a cold inlet 131 is located at the lower part of the other end. An outlet 14 is located in the outlet chamber 5. The valve core 122 is connected to the valve body 1 via an elastic component, and both ends of the valve core 122 are respectively connected to the corresponding end of the inlet chamber 4. Multiple through holes 126 are provided on the valve core 122, and an indicator valve stem 22 passes through the valve core 122 and extends into the outlet chamber 5, where a temperature sensing structure is connected.

[0031] A temperature-sensing structure is installed inside the water outlet chamber 5 to sense the temperature of the mixed liquid. The temperature-sensing structure includes a receiving shell 141 connected to the valve body 1, and a temperature sensor 142 is provided inside the receiving shell 141. The end of the indicating valve stem 22 away from the indicating mechanism extends through to a pressure plate 143 located inside the receiving shell 141, and the pressure plate 143 is in contact with the temperature sensor 142.

[0032] Both ends of the water inlet chamber 4 are provided with baffles 132. One baffle 132 has a hot inlet 121 at the top and the other baffle 132 has a cold inlet 131 at the bottom. The valve core 122 is connected to the baffle 132 on the corresponding side at both ends.

[0033] The elastic component includes a reset valve stem 123 and a spring 124. A reset cavity is provided on the valve body 1. One end of the reset valve stem 123 is fixedly connected to the valve core 122, and the other end extends through the reset cavity to a location where a fixing plate 125 is installed. A spring 124 is fitted onto the reset valve stem 123. One end of the spring 124 is connected to the fixing plate 125, and the other end is connected to the inner wall of the reset cavity. When the temperature bulb 142 contracts, the spring 124 resets, pulling the valve body 1 back to its original position.

[0034] A partition plate 15 is fixedly installed inside the water outlet chamber 5. Multiple partition holes are opened through the partition plate 15 to allow the mixed liquid to enter the water outlet chamber 5. The indicator valve stem 22 passes through the partition plate 15 and is connected to the temperature sensing structure.

[0035] The principle and advantages of this invention: Low-temperature liquid enters the valve body 1 through the cold inlet 131 of the low-temperature port 13, and high-temperature liquid enters the valve body 1 through the hot inlet 121 of the high-temperature port 12. After the cold and hot liquids mix, the temperature is transferred to the temperature sensor 142. The temperature sensor 142 expands and contracts upon sensing the temperature. When the temperature is high, the temperature sensor 142 expands, pushing the valve core 122 upwards via the indicator valve stem 22, compressing the spring 124. This increases the flow rate at the cold inlet 131 and decreases the flow rate at the hot inlet 121, maintaining a constant total flow rate. When the temperature decreases, the temperature sensor 142 contracts, the spring 124 resets, pulling the valve core 122 downwards. This decreases the flow rate at the cold inlet 131 and increases the flow rate at the hot inlet 121, maintaining a constant total flow rate, thus achieving temperature control. Temperature control effect: When the valve moves up or down, the indicator plate 21 moves up or down via the indicator valve stem 22, thereby displaying the different opening and closing degrees of the valve core 122 in real time. Simultaneously, the rotating plate 31 is driven to rotate via the screw 221. The rotation angle of the rotating plate 31 and the upward movement distance of the screw 221 are adjusted by lengthening the pitch of the screw 221. The spotlight 33 illuminates different colored light sheets 32, displaying different colored light in the transparent lampshade 3. Therefore, when troubleshooting, the different colored lights can be used to troubleshoot. In this embodiment, four colored light sheets 32 are set, namely red, yellow, green and blue, corresponding to overheating, moderately hot, moderately cold and overcooling, respectively. When a fault occurs, such as the temperature is too high, it is only necessary to find the temperature control valve where the red light is located.

[0036] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A feedback indication device for a mechanical temperature control valve for high and low temperature cooling water, characterized in that, Includes a valve body (1), wherein a temperature sensing structure and a valve core (122) are provided inside the valve body (1), and the temperature sensing structure can drive the valve core (122) to slide inside the valve body (1) to adjust the flow rate of the cold inlet (131) and the hot inlet (121); The valve core (122) is provided with an indicator valve rod (22), one end of which extends through to the outside of the valve body (1) and is provided with an indicator mechanism for displaying the degree of opening and closing of the valve core (122); the indicator mechanism includes a numerical indicator component and a light indicator component; The numerical indicator component includes an indicator shell (2) installed on the valve body (1). The side wall of the indicator shell (2) is provided with a sliding groove along the length of the indicator valve stem (22). An indicator plate (21) is slidably arranged in the sliding groove. The indicator plate (21) is fixedly connected to the indicator valve stem (22). A scale is provided on the side wall of the indicator shell (2) corresponding to the sliding groove. The light indicator assembly includes a transparent lampshade (3) and a spotlight (33) installed on the end of the indicator housing (2) away from the valve body (1). A rotating plate (31) is fixedly mounted inside the transparent lampshade (3). A screw (221) is threadedly connected to the axis of the rotating plate (31). The screw (221) passes through the indicator housing (2) and is connected to the indicator valve stem (22). The rotating plate (31) has multiple through slots that run through the screw (221). Each through slot is equipped with a light sheet (32) of a different color. The spotlight (33) is located on one side of the screw (221) and the lamp head faces the rotating plate (31).

2. The apparatus according to claim 1, characterized in that, The through slots are arranged in a fan shape.

3. The apparatus according to claim 1, characterized in that, The indicator shell (2) has two symmetrically opened sliding grooves on its side wall, and the two ends of the indicator plate (21) are respectively inserted into the sliding grooves on the corresponding side.

4. The apparatus according to claim 1, characterized in that, The valve body (1) is provided with a connected inlet chamber (4) and an outlet chamber (5), which form a T-shaped structure. The inlet chamber (4) has a hot inlet (121) at the upper part of one end and a cold inlet (131) at the lower part of the other end. The outlet chamber (5) has a liquid outlet (14). The valve core (122) is connected to the valve body (1) through an elastic component, and the two ends of the valve core (122) are respectively connected to the corresponding end of the inlet chamber (4). The valve core (122) has multiple through holes (126), and the indicator valve rod (22) passes through the valve core (122) and extends into the outlet chamber (5) and is connected to the temperature sensing structure.

5. The apparatus according to claim 4, characterized in that, The temperature sensing structure includes a receiving shell (141) connected to the valve body (1), and a temperature bulb (142) is provided inside the receiving shell (141). The end of the indicating valve stem (22) away from the indicating mechanism extends into the receiving shell (141) and is provided with a pressure plate (143). The pressure plate (143) is in contact with the temperature bulb (142).

6. The apparatus according to claim 4, characterized in that, Both ends of the water inlet chamber (4) are provided with baffles (132), one of the baffles (132) has a hot inlet (121) on the upper part, and the other baffle (132) has a cold inlet (131) on the lower part. The valve core (122) is connected to the baffle (132) on the corresponding side at both ends.

7. The apparatus according to claim 4, characterized in that, The elastic component includes a reset valve stem (123) and a spring (124). A reset cavity is provided on the valve body (1). One end of the reset valve stem (123) is fixedly connected to the valve core (122), and the other end extends into the reset cavity and is provided with a fixing plate (125). A spring (124) is sleeved on the reset valve stem (123). One end of the spring (124) is connected to the fixing plate (125), and the other end is connected to the inner wall of the reset cavity.

8. The apparatus according to claim 4, characterized in that, A partition plate (15) is fixedly installed inside the water outlet cavity (5). Multiple partition holes are opened through the partition plate (15). The indicator valve stem (22) passes through the partition plate (15) and is connected to the temperature sensing structure.

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