Liquid expansion temperature controller capable of accurately controlling temperature

Abstract

The utility model discloses a liquid expansion temperature controller accurate in temperature control, which belongs to the technical field of liquid expansion temperature controllers and comprises a ceramic rice mounting frame, a control mechanism is mounted in the ceramic rice mounting frame, a driving part is mounted on the ceramic rice mounting frame, an output end of the driving part is abutted against an input end of the control mechanism, and a support is arranged at the upper end of the control mechanism. The upper end of the support is in threaded connection with a main rotating rod, an ejector rod is arranged at the bottom of the main rotating rod, one end of the ejector rod corresponds to the adjusting end of the control mechanism, the main rotating rod is sleeved with an outer cylinder, and the outer cylinder is in sliding fit with the main rotating rod. The outer cylinder is sleeved with the driven gear, the driving gear and the driven gear are meshed and matched with each other, the diameter of the driving gear is smaller than that of the driven gear, and accurate temperature control can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of liquid expansion temperature controller technology, and more specifically, to a liquid expansion temperature controller with accurate temperature control. Background Technology

[0002] A liquid expansion thermostat is a device that uses the principle of thermal expansion and contraction of liquids to control temperature. It typically consists of a sensing bulb, a capillary tube, and a regulating mechanism. The sensing bulb contains a temperature-sensitive liquid. When the temperature changes, the liquid expands or contracts, transmitting pressure through the capillary tube and driving the regulating mechanism (such as a switch or valve) to actuate, thereby controlling the temperature.

[0003] In existing liquid expansion temperature controllers, turning a knob moves a ceramic column downwards, which in turn pushes a movable tongue, causing it to contact a contact point and close the circuit. Adjusting the knob's rotation angle controls the distance the ceramic column descends, thus changing the pressure on the movable tongue and achieving temperature control. However, existing knob adjustments only allow for wide temperature ranges and lack precision. To address these issues, a solution is proposed below. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a liquid expansion temperature controller with accurate temperature control, which can achieve precise temperature control.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A liquid expansion thermostat with accurate temperature control includes a ceramic chip mounting bracket. A control mechanism is installed inside the mounting bracket, and a drive component is mounted on the bracket. The output end of the drive component and the input end of the control mechanism abut against each other. A bracket is provided at the upper end of the control mechanism, and a main rotating rod is threadedly connected to the upper end of the bracket. A top rod is provided at the bottom of the main rotating rod, with one end of the top rod corresponding to the adjustment end of the control mechanism. An outer cylinder is fitted around the main rotating rod, and the outer cylinder and the main rotating rod are in sliding engagement. A fine-tuning rod is rotatably mounted on the top of the bracket, and a driving gear is fitted around the fine-tuning rod. A driven gear is fitted around the outer cylinder. The driving gear and the driven gear mesh and are adapted to each other. The diameter of the driving gear is smaller than the diameter of the driven gear.

[0007] Preferably, the control mechanism includes a first ceramic ring, a short contact piece, a second ceramic ring, a long contact piece, and a third ceramic ring installed sequentially via anchor pins. The second ceramic ring has symmetrical terminals on both sides. The terminals are sleeved on the anchor pins, and the two terminals are respectively in close contact with the long contact piece and the short contact piece. One end of the long contact piece is connected to a movable contact piece, and the other end of the movable contact piece corresponds to the short contact piece. The ends of the movable contact piece and the short contact piece respectively protrude to form contact points.

[0008] Preferably, the driving component includes a capillary tube, a temperature sensing cylinder, and a diaphragm, wherein the capillary tube connects the temperature sensing cylinder and the diaphragm.

[0009] Preferably, knobs are respectively fitted onto the outside of the outer cylinder and the fine-tuning rod.

[0010] Preferably, the main rotating rod has symmetrically formed grooves on its side, and a slider is slidably disposed inside the groove, the slider being fixedly connected to the inner side of the outer cylinder.

[0011] Preferably, the ceramic rice mounting rack is covered with a protective shell.

[0012] Preferably, the knob has anti-slip protrusions on its side.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] I. This solution can directly achieve adjustment and control mechanism through the cooperation of outer cylinder, main rotating rod and top rod, so as to achieve a wide range of adjustment and ensure efficiency. When rotating the fine-tuning rod, driving gear and driven gear to drive outer cylinder, since the diameter of driving gear is smaller than that of driven gear, the linear speed of driving gear and driven gear is the same. When driving gear rotates 360 degrees, driven gear rotates less than 360 degrees, which can improve adjustment accuracy and achieve high-precision adjustment.

[0015] Second, by detecting temperature changes through the driving component, the driving component will push the control mechanism, thereby controlling the opening and closing of the control mechanism through temperature changes. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the protective shell of this utility model;

[0018] Figure 3 This is a schematic diagram of the meshing structure of the driving gear and the driven gear of this utility model;

[0019] Figure 4 This is an enlarged structural schematic diagram of A in this utility model;

[0020] Figure 5 This is an enlarged structural schematic diagram of B of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Ceramic granule mounting bracket; 2. Control mechanism; 3. Drive component; 4. Main rotating rod; 5. Top rod; 6. Outer cylinder; 7. Fine-tuning rotating rod; 8. Drive gear; 9. Driven gear; 10. First ceramic granule ring; 11. Anchor pin; 12. Short contact piece; 13. Second ceramic granule ring; 14. Long contact piece; 15. Third ceramic granule ring; 16. Bracket; 17. Terminal; 18. Movable contact piece; 19. Contact point; 20. Capillary tube; 21. Temperature sensing cylinder; 22. Diaphragm box; 23. Knob; 24. Slide groove; 25. Slider; 26. Protective shell. Detailed Implementation

[0023] Example 1:

[0024] Please see Figure 1-5 A liquid expansion thermostat with accurate temperature control includes a ceramic chip mounting bracket 1. The ceramic chip mounting bracket 1 is covered with a protective shell 26, which provides protection. A control mechanism 2 is installed inside the ceramic chip mounting bracket 1. The control mechanism 2 includes a first ceramic chip ring 10, a short contact piece 12, a second ceramic chip ring 13, a long contact piece 14, and a third ceramic chip ring 15, which are installed sequentially by anchor pins 11. The second ceramic chip ring 13 has symmetrical terminals 17 on both sides. The terminals 17 are fitted onto the anchor pins 11. The two terminals 17 pass through the protective shell 26 and are in close contact with the long contact piece 14 and the short contact piece 12, respectively. One end of the long contact piece 14 is connected to a movable contact piece 18. The other end of the movable contact piece 18 corresponds to the short contact piece 12. The ends of the movable contact piece 18 and the short contact piece 12 respectively protrude to form contact points 19.

[0025] The circuit is connected to the external circuit through two terminals 17. A complete circuit can be formed by the cooperation of the long contact 14, the short contact 12 and the movable contact 18. The contact 19 ensures the connection between the short contact 12 and the movable contact 18. The long contact 14 is elastic and easy to reset. At the same time, the protective shell 26, the ceramic ferrule mounting bracket 1, the first ceramic ferrule ring 10, the second ceramic ferrule ring 13 and the third ceramic ferrule ring 15 are all made of insulating materials to avoid short circuits or electric shocks and ensure safety.

[0026] A drive unit 3 is installed on the ceramic chip mounting bracket 1. The drive unit 3 includes a capillary tube 20, a temperature sensing cylinder 21, and a diaphragm box 22. The diaphragm box 22 is arranged on the ceramic chip mounting bracket 1, and the output end of the diaphragm box 22 corresponds to the long contact piece 14. The temperature sensing cylinder 21 is arranged outside the protective shell 26. The capillary tube 20 passes through the protective shell 26 and connects the temperature sensing cylinder 21 and the diaphragm box 22. The output end of the diaphragm box 22 is fixedly connected to an upper push rod, which corresponds to the lower end face of the long contact piece 14. The temperature sensing cylinder 21 is used to detect the external temperature. According to the principle of thermal expansion and contraction, the liquid inside the temperature sensing cylinder 21 enters the diaphragm box 22 through the capillary tube 20. The movement of the diaphragm box 22 drives the upper push rod to move, thereby pushing the long contact piece 14 to move upward. This can control the movable contact piece 18 to separate from the short contact piece 12, achieving the effect of disconnecting the circuit.

[0027] A bracket 16 is provided at the upper end of the control mechanism 2. A main rotating rod 4 is threadedly connected to the upper end of the bracket 16. A top rod 5 is provided at the bottom of the main rotating rod 4. One end of the top rod 5 corresponds to the adjustment end of the control mechanism 2. An outer cylinder 6 is sleeved on the outside of the main rotating rod 4. The outer cylinder 6 passes through the protective shell 26, and the outer cylinder 6 and the protective shell 26 are rotatably engaged. The outer cylinder 6 and the main rotating rod 4 are slidably engaged. A sliding groove 24 is symmetrically opened on the side of the main rotating rod 4. A slider 25 is slidably arranged inside the sliding groove 24. The slider 25 is fixedly connected to the inner side of the outer cylinder 6. Through the design of the sliding groove 24 and the slider 25, the outer cylinder 6 and the main rotating rod 4 can slide along the direction of the sliding groove 24. When the outer cylinder 6 rotates, the sliding groove 24 and the slider 25 move together. The cooperation of 25 enables the main rotating rod 4 to rotate. The top of the bracket 16 is rotatably equipped with a fine-tuning rod 7, which passes through the protective shell 26 and rotates in cooperation with the protective shell 26. The fine-tuning rod 7 is fitted with a driving gear 8 on the outside, and the outer cylinder 6 is fitted with a driven gear 9 on the outside. The driving gear 8 and the driven gear 9 mesh with each other and are compatible. The diameter of the driving gear 8 is smaller than the diameter of the driven gear 9, so that the driving gear 8 and the driven gear 9 have the same linear velocity when rotating. Since the circumference of the driven gear 9 is longer, the angular velocity of the driven gear 9 is smaller than that of the driving gear 8, so that the driving gear 8 can drive the driven gear 9 for fine-tuning.

[0028] This application also includes a knob 23 fitted on one end of the outer cylinder 6 and the fine adjustment knob 7 located outside the protective shell 26. The knob 23 has anti-slip protrusions on its side, making it easy for the user to turn the knob 23. The protective protrusions can increase the friction between the user and the knob 23 during use, making it easier to apply force.

[0029] Working principle:

[0030] Connect the external power cord and the two terminals 17, and place the temperature sensing cylinder 21 at the location where the temperature needs to be detected. When it is necessary to adjust the on / off threshold, the worker can first turn the corresponding knob 23 on the outer cylinder 6, thereby driving the outer cylinder 6 to rotate. The outer cylinder 6 drives the slider 25 to rotate, and the slider 25 drives the slide groove 24 to rotate, thereby driving the main rotating rod 4 to rotate. Due to the threaded fit between the main rotating rod 4 and the bracket 16, when the main rotating rod 4 rotates, the main rotating rod 4 will move relative to the bracket 16. The main rotating rod 4 drives the top rod 5 to move, and the top rod 5 will act on the upper end face of the long contact piece 14, thereby pushing the long contact piece 14 to move downward. The long contact piece 14 drives the moving contact piece to move, thereby making the moving contact piece and the short contact piece 12 contact each other to form a circuit. By controlling the moving distance of the main rotating rod 4, the moving distance of the top rod 5 is controlled, thereby changing the pressure on the long contact piece 14 and realizing the adjustment of different on / off thresholds. The main rotating rod 4 enables a wide range of rapid adjustment to ensure efficiency.

[0031] When fine adjustment is required, the knob 23 corresponding to the fine adjustment lever 7 is rotated, which in turn drives the driving gear 8 to rotate. The driving gear 8 drives the driven gear 9 to rotate, which in turn drives the outer cylinder 6 to rotate. This, in turn, drives the main rotating rod 4 to rotate, which in turn moves the top rod 5 to adjust the pressure on the long contact plate 14. Since the linear velocity of the driving gear 8 and the linear velocity of the driven gear 9 are the same, and the diameter of the driving gear 8 is smaller than that of the driven gear 9, the angular velocity of the driving gear 8 is greater than that of the driven gear 9, thus achieving fine adjustment and ensuring accurate temperature control of the entire equipment.

[0032] When the temperature detected by the temperature sensing cylinder 21 rises, the liquid inside the temperature sensing cylinder 21 expands due to thermal expansion and contraction, thereby driving the diaphragm 22 to start. The diaphragm 22 will drive the upper push rod to move upward. When the temperature reaches the threshold, the pushing force of the diaphragm 22 on the upper push rod is greater than the pressure of the push rod 5. The upper push rod pushes the long contact piece 14 to move upward, that is, it causes the contact point 19 of the moving contact piece to separate from the contact point 19 of the short contact piece 12, and the entire circuit is disconnected.

Claims

1. A liquid expansion temperature controller with high temperature control accuracy, characterized in that: The application relates to a porcelain rice mounting frame (1) internally provided with a control mechanism (2), wherein a driving element (3) is mounted on the porcelain rice mounting frame (1), the output end of the driving element (3) and the input end of the control mechanism (2) are in mutual contact, the upper end of the control mechanism (2) is provided with a support (16), the main rotating rod (4) is threadedly connected to the upper end of the support (16), the bottom of the main rotating rod (4) is provided with a top rod (5), one end of the top rod (5) corresponds to the adjusting end of the control mechanism (2), the outer portion of the main rotating rod (4) is sleeved with an outer cylinder (6), the outer cylinder (6) and the main rotating rod (4) are in sliding fit, the top portion of the support (16) is rotationally provided with a fine-tuning rotating rod (7), the outer portion of the fine-tuning rotating rod (7) is sleeved with a driving gear (8), the outer portion of the outer cylinder (6) is sleeved with a driven gear (9), the driving gear (8) and the driven gear (9) are in mutual meshing and adaptation, and the diameter of the driving gear (8) is smaller than that of the driven gear (9). ​ 2. The liquid expansion temperature controller of claim 1, wherein: The control mechanism (2) comprises a first porcelain rice ring (10), a short contact piece (12), a second porcelain rice ring (13), a long contact piece (14) and a third porcelain rice ring (15) which are sequentially mounted through anchor nails (11), the two sides of the second porcelain rice ring (13) are symmetrically provided with wire connection ends (17), the wire connection ends (17) are sleeved on the anchor nails (11), and the two wire connection ends (17) are respectively in close contact with the long contact piece (14) and the short contact piece (12), one end of the long contact piece (14) is connected with a movable contact piece (18), the other end of the movable contact piece (18) corresponds to the short contact piece (12), and the end, corresponding to the short contact piece (12), of the movable contact piece (18) is respectively formed with a contact point (19).

3. The liquid-expansion temperature controller of claim 1, wherein: The driving element (3) comprises a capillary tube (20), a temperature sensing cylinder (21) and a diaphragm box (22), and the capillary tube (20) connects the temperature sensing cylinder (21) and the diaphragm box (22).

4. The liquid-expansion temperature controller of claim 1, wherein: The outer portions of the outer cylinder (6) and the fine-tuning rotating rod (7) are respectively sleeved with knobs (23).

5. The liquid-expansion temperature controller of claim 1, wherein: The side surface of the main rotating rod (4) is symmetrically provided with a sliding groove (24), the sliding groove (24) is internally slidably provided with a sliding block (25), and the sliding block (25) is fixedly connected with the inner side surface of the outer cylinder (6).

6. The liquid expansion temperature controller of claim 1, wherein: The porcelain rice mounting frame (1) is externally sleeved with a protective shell (26).

7. The liquid-expansion temperature controller of claim 4, wherein: The side surface of the knob (23) is provided with anti-skid protrusions.

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