Temperature control electric ball valve

Abstract

The utility model relates to the technical field of electric ball valves, and particularly discloses a temperature control electric ball valve which comprises a valve body. The mounting sleeve is fixed on the valve body; the temperature sensor penetrates through the mounting sleeve; the sealing cover is located at the bottom of the mounting sleeve and makes contact with the end of the temperature sensor, a moving rod is connected to the top of the sealing cover, a moving groove is formed in the bottom of the mounting sleeve, and the moving rod is mounted in the moving groove; the elastic piece is arranged between the inner wall of the moving groove and the moving rod; through an automatic locking mechanism at the bottom, the elastic piece drives the sealing cover to seal the channel at the bottom of the mounting sleeve in a normal state, and when the temperature sensing probe is inserted, the probe extrudes the sealing cover to enable the elastic piece to deform, and the channel is opened; when the probe is pulled out, the elastic piece immediately drives the sealing cover to reset, spraying of media in the valve body can be automatically blocked, dynamic sealing of the mounting hole is achieved, and the probe can be detached without closing the valve in the running state.

Description

Technical Field

[0001] This utility model belongs to the field of electric ball valve technology, and specifically relates to a temperature-controlled electric ball valve. Background Technology

[0002] In industrial automation and HVAC systems, temperature-controlled electric ball valves are the core actuators for achieving precise temperature control of fluid media. Their typical structure consists of three parts: an electric actuator, a ball valve body, and a temperature control system. The electric actuator receives control signals and drives the valve core to rotate; the ball valve adjusts the media flow by changing its opening degree; and the temperature control system relies on a temperature sensor probe installed on the valve or pipeline to detect the media temperature in real time, forming a closed-loop feedback.

[0003] A search revealed that CN116292959A discloses a pressure-balanced intelligent temperature control electric ball valve, including a ball valve housing, a first pipe fixedly installed on the left end of the ball valve housing, a regulating mechanism on the first pipe, and a filter tube wall embedded in the first pipe. This pressure-balanced intelligent temperature control electric ball valve is equipped with a regulating mechanism. The first steel clamp and the anti-leakage film can ensure the safety and sealing of the regulating mechanism installation, ensure the normal use of the pressure monitoring gauge and temperature monitoring gauge, and also ensure the filtration function of the regulating mechanism.

[0004] The existing electric ball valve requires the electric ball valve to be closed before removing the temperature sensor probe; otherwise, the medium inside the valve body will leak from the mounting hole of the temperature sensor probe. The mounting hole lacks an automatic locking mechanism and must be manually sealed after the electric ball valve is closed. The probe cannot be hot-swapped while the valve is running. Utility Model Content

[0005] The purpose of this invention is to provide a temperature-controlled electric ball valve to solve the problems mentioned in the background art.

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

[0007] A temperature-controlled electric ball valve, comprising:

[0008] Valve body;

[0009] Mounting sleeve, fixed to the valve body;

[0010] Temperature sensor, installed through the mounting sleeve;

[0011] A sealing cap is located at the bottom of the mounting sleeve and contacts the end of the temperature sensor. A movable rod is connected to the top of the sealing cap, and a movable groove is opened at the bottom of the mounting sleeve, in which the movable rod is installed.

[0012] An elastic element, located between the inner wall of the moving groove and the moving rod, is used to drive the sealing cover to close the bottom channel of the mounting sleeve under normal conditions.

[0013] Preferably, the temperature sensor includes:

[0014] A sealing head is fitted onto the temperature sensor. The top of the mounting sleeve has a mounting groove, and the sealing head and the mounting groove are sealed together.

[0015] Preferably, a connecting sleeve is fitted onto the sealing head, which is threaded to the mounting sleeve and presses against the sealing head to form an axial lock.

[0016] Preferably, the bottom wall of the mounting groove has a through hole, through which the temperature sensor passes.

[0017] Preferably, the number of movable rods is at least two.

[0018] Preferably, the elastic element includes a compression spring, one end of which is mounted on the moving rod and the other end is mounted on the inner wall of the moving groove.

[0019] Preferably, the elastic element includes an elastic band, one end of which is mounted on the moving rod and the other end is mounted on the inner wall of the moving groove.

[0020] Preferably, the sealing head is a stepped cylindrical structure, with its lower outer diameter fitting with the mounting groove with a clearance fit, and its upper outer diameter fitting with the inner wall of the connecting sleeve with an interference fit.

[0021] Preferably, the diameter of the through hole is smaller than the outer diameter of the sealing head.

[0022] Preferably, a thermally conductive silicone grease layer is filled between the temperature sensor and the sealing head.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This utility model utilizes an automatic locking mechanism at the bottom. Under normal conditions, the elastic element drives the sealing cover to close the bottom channel of the mounting sleeve. When the temperature sensor is inserted, the sensor presses the sealing cover, causing the elastic element to deform and the channel to open. When the sensor is pulled out, the elastic element immediately drives the sealing cover to reset, which can automatically block the leakage of the medium inside the valve body and achieve dynamic sealing of the mounting hole. This allows the sensor to be removed without closing the valve while it is in operation.

[0025] The reliability of the seal is improved by adopting a double sealing structure. The top seal is formed by the cooperation of the sealing head and the connecting sleeve; the bottom seal is automatically closed by the linkage of the elastic element and the sealing cover. The upper and lower sealing structures cooperate with each other to prevent the medium from leaking from the probe installation path. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0027] Figure 2 This is a schematic cross-sectional view of the valve body of this utility model.

[0028] Figure 3 This is a schematic diagram of the mounting sleeve and temperature sensor structure of this utility model.

[0029] Figure 4 This is a schematic diagram of the cross-section of the connecting sleeve of this utility model.

[0030] Figure 5 This is a cross-sectional schematic diagram of the mounting sleeve and connecting sleeve of this utility model.

[0031] In the diagram: 100, valve body; 200, mounting sleeve; 201, mounting groove; 202, moving groove; 203, elastic element; 204, moving rod; 205, sealing cover; 300, temperature sensor; 301, sealing head; 302, connecting sleeve. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1: Please refer to Figures 1-5 As shown: A temperature-controlled electric ball valve includes: a valve body 100; a mounting sleeve 200 fixed to the valve body 100; a temperature sensor 300 penetrating the mounting sleeve 200; a sealing cover 205 located at the bottom of the mounting sleeve 200 and in contact with the end of the temperature sensor 300, a moving rod 204 connected to the top of the sealing cover 205, a moving groove 202 opened at the bottom of the mounting sleeve 200, and the moving rod 204 installed in the moving groove 202; and an elastic element 203 disposed between the inner wall of the moving groove 202 and the moving rod 204, used to drive the sealing cover 205 to normally close the bottom channel of the mounting sleeve 200.

[0034] In this embodiment, the mounting sleeve 200 is fixed to the top or side of the valve body 100 by welding or bolting, ensuring that the mounting sleeve 200 is connected to the internal channel of the valve body 100 so that the temperature sensor 300 can detect the temperature of the medium. The mounting sleeve 200 is cylindrical or tubular and fixed to the outside of the valve body 100. Its material matches the valve body 100 and has good pressure resistance and sealing performance. A through mounting channel is formed inside to accommodate the temperature sensor 300. The temperature sensor 300 uses temperature-sensitive elements such as thermistors and thermocouples. It is wrapped with a protective sleeve, and the probe end extends into the medium flow area inside the valve body 100 for real-time temperature detection. When the temperature sensor 300 is removed from the mounting sleeve 200, the sealing cover 205 is reset and closes the bottom channel of the mounting sleeve 200 under the action of the moving rod 204 and the elastic element 203.

[0035] The temperature sensor 300 includes:

[0036] A sealing head 301 is fitted onto the temperature sensor 300. The top of the mounting sleeve 200 has a mounting groove 201. The sealing head 301 is sealed to the mounting groove 201. The sealing head 301 is made of elastic materials such as high-temperature resistant and corrosion-resistant rubber or polytetrafluoroethylene to ensure sealing performance. The top of the sealing head 301 protrudes slightly from the mounting groove 201 and is rotatably connected to the connecting sleeve 302. When the connecting sleeve 302 rotates, it can drive the sealing head 301 to move within the mounting groove 201. When the connecting sleeve 302 drives the sealing head 301 to move within the mounting groove 201, the sealing head 301 will also drive the temperature sensor 300 to move. During the process of removing the temperature sensor 300 from the mounting sleeve 200, the sealing cover 205 will first contact the bottom of the mounting sleeve 200, and then the sealing head 301 will slide out of the mounting groove 201.

[0037] A connecting sleeve 302 is fitted onto the sealing head 301, which is threadedly connected to the mounting sleeve 200 and presses the sealing head 301 together to form an axial lock.

[0038] The bottom wall of the mounting groove 201 has a through hole, through which the temperature sensor 300 passes.

[0039] The number of the movable rods 204 is at least two.

[0040] The elastic element 203 includes a compression spring, one end of which is mounted on the moving rod 204 and the other end is mounted on the inner wall of the moving groove 202.

[0041] The sealing head 301 has a stepped cylindrical structure, with its lower outer diameter having a clearance fit with the mounting groove 201 and its upper outer diameter having an interference fit with the inner wall of the connecting sleeve 302.

[0042] The diameter of the through hole is smaller than the outer diameter of the sealing head 301, allowing only the temperature sensor 300 probe to pass through the through hole, thus preventing the sealing head 301 from falling off.

[0043] A thermally conductive silicone grease layer is filled between the temperature sensor 300 and the sealing head 301. The thermally conductive silicone grease layer fills the gap between the temperature sensor 300 and the sealing head 301 to enhance the heat conduction efficiency and avoid temperature measurement delay caused by air gaps.

[0044] Example 2: The difference between this example and Example 1 is that the elastic element 203 includes an elastic band, one end of which is installed on the moving rod 204 and the other end is installed on the inner wall of the moving groove 202.

[0045] The working principle and usage process of this utility model are as follows: The temperature sensor 300 is fixed to the top of the mounting sleeve 200 through the top sealing head 301 and the connecting sleeve 302. The lower part of the sealing head 301 is clearance-fitted with the mounting groove 201, and the upper part is interference-fitted with the inner wall of the connecting sleeve 302. The connecting sleeve 302 axially presses the sealing head 301 through the thread to form a top seal. The probe of the temperature sensor 300 passes through the through hole in the bottom wall of the mounting groove 201 and extends into the interior of the mounting sleeve 200, pushing the sealing cover 205 away from the bottom end of the mounting sleeve 200.

[0046] The internal medium temperature of the valve body 100 is detected by the temperature sensor 300 probe. A thermally conductive silicone grease layer is filled between the sensor and the sealing head 301 to accelerate heat conduction and ensure temperature measurement accuracy. Rotating the connecting sleeve 302 releases the axial clamping force on the sealing head 301, disengaging the interference fit between the sealing head 301 and the mounting groove 201. The temperature sensor 300 is then pulled upwards, and its bottom end disengages from the sealing cover 205. At this point, the sealing cover 205 loses the squeezing effect of the sensor. The elastic element 203, due to the reset force, pushes the moving rod 204 downwards along the moving groove 202, causing the sealing cover 205 to move upwards rapidly, completely sealing the bottom channel of the mounting sleeve 200. The sealing cover 205 automatically resets under the action of the elastic element 203 the instant the sensor is pulled out, preventing the medium from the valve body 100 from spraying out of the mounting sleeve 200 channel without manual operation, thus achieving automatic sealing in the "hot-swappable" state.

[0047] Align the probe of the new temperature sensor 300 with the top through hole of the mounting sleeve 200 and insert it downwards. The bottom end of the sensor presses against the sealing cover 205, pushing the moving rod 204 downwards along the moving groove 202. The elastic element 203 is stretched, and the sealing cover 205 gradually moves away from the bottom channel of the mounting sleeve 200, making room for the sensor to be inserted. After the sensor is inserted into place, its top sealing head 301 enters the mounting groove 201. Tighten the connecting sleeve 302, and the sealing head 301 is axially pressed by the thread. The upper surface of the sealing cover 205 contacts the bottom end of the sensor.

[0048] The thermally conductive silicone grease layer between the temperature sensor 300 and the sealing head 301 ensures efficient heat conduction. The sensor resumes real-time detection of the internal medium temperature of the valve body 100 and completes the installation. Relying on the linkage between the elastic element 203 and the sealing cover 205, the channel is instantly sealed when the sensor is pulled out to prevent medium leakage.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature-controlled electric ball valve, characterized in that, include: Valve body (100); Mounting sleeve (200) is fixed to valve body (100); Temperature sensor (300) is installed through mounting sleeve (200); A sealing cover (205) is located at the bottom of the mounting sleeve (200) and in contact with the end of the temperature sensor (300). A moving rod (204) is connected to the top of the sealing cover (205). A moving groove (202) is opened at the bottom of the mounting sleeve (200), and the moving rod (204) is installed in the moving groove (202). An elastic element (203) is provided between the inner wall of the moving groove (202) and the moving rod (204) to drive the sealing cover (205) to close the bottom channel of the mounting sleeve (200) under normal conditions.

2. The temperature-controlled electric ball valve according to claim 1, characterized in that: The temperature sensor (300) includes: A sealing head (301) is sleeved on the temperature sensor (300). The top of the mounting sleeve (200) is provided with a mounting groove (201), and the sealing head (301) and the mounting groove (201) are sealed together.

3. The temperature-controlled electric ball valve according to claim 2, characterized in that: A connecting sleeve (302) is fitted onto the sealing head (301), which is threaded to the mounting sleeve (200) and presses against the sealing head (301) to form an axial lock.

4. The temperature-controlled electric ball valve according to claim 2, characterized in that: The bottom wall of the mounting groove (201) has a through hole, through which the temperature sensor (300) passes.

5. The temperature-controlled electric ball valve according to claim 1, characterized in that: The number of the movable rods (204) is at least two.

6. The temperature-controlled electric ball valve according to claim 1, characterized in that: The elastic element (203) includes a compression spring, one end of which is mounted on the moving rod (204), and the other end is mounted on the inner wall of the moving groove (202).

7. The temperature-controlled electric ball valve according to claim 1, characterized in that: The elastic element (203) includes an elastic band, one end of which is mounted on the moving rod (204), and the other end is mounted on the inner wall of the moving groove (202).

8. The temperature-controlled electric ball valve according to claim 2, characterized in that: The sealing head (301) is a stepped cylindrical structure, with its lower outer diameter having a clearance fit with the mounting groove (201) and its upper outer diameter having an interference fit with the inner wall of the connecting sleeve (302).

9. The temperature-controlled electric ball valve according to claim 4, characterized in that: The diameter of the through hole is smaller than the outer diameter of the sealing head (301).

10. The temperature-controlled electric ball valve according to claim 2, characterized in that: A thermally conductive silicone grease layer is filled between the temperature sensor (300) and the sealing head (301).

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