Liquid level float switch with anti-sticking lengthened part
By introducing anti-viscosity extension and angle design into the liquid level float switch, the fault problem of the liquid level float switch when monitoring oily liquids is solved, and the reliability of the equipment and the accuracy of liquid level monitoring are improved.
Patent Information
- Application Number
- CN202421073027.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-17
AI Technical Summary
Existing liquid level float switches are prone to failure when monitoring oily and waxy liquids, mainly due to the contamination of the rotation hinge point at the end of the connecting rod and the retention of viscous substances, resulting in the rotation of the hinge point being blocked.
A liquid level float switch with anti-viscosity extension part is designed. By setting an extension part between the controller housing and the flange, the influence of the viscous substance on the connecting rod is reduced, and the connection rod and the induction contact rod are placed on the connecting rod. Set angles or spacing between them to reduce the risk of adhesion, and add delayed output elements into the control circuit to improve the accuracy of liquid level monitoring.
It effectively avoids the impact of viscous substances on the connecting rod, reduces the risk of adhesion, improves the accuracy of liquid level monitoring and the reliability of equipment.
Smart Images
Figure CN222260892U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of liquid level float switches, in particular to a liquid level float switch with an anti-sticking extension part. Background Art
[0002] In the industrial and oil field fields, liquid level float switches are often used to monitor the liquid level in the tank. The connection method of the existing side-mounted liquid level float switch on the tank body is as shown in the attached manual. Figure 1 As shown, first, a horizontally arranged liquid level switch mounting neck is connected to the outside of the tank body, and the end of the liquid level switch mounting neck has a flange. The float and connecting rod of the liquid level float switch extend from the liquid level switch mounting neck into the tank body, and the flange of the liquid level float switch is sealed and connected with the flange at the end of the liquid level switch mounting neck by bolts. When the measured liquid contains oil, wax and other substances that are easy to harden, the existing float level gauge will have failures for different reasons, among which the point with the highest failure rate is: the rotation hinge point at the end of the connecting rod is generally located in the liquid level switch mounting neck, and the liquid level switch mounting neck is easy to hide dirt and grime. Oil, wax and other substances that are easy to harden are retained and hardened in the liquid level switch mounting neck, which eventually affects the normal rotation of the connecting rod hinge point, thereby causing the liquid level float switch to fail. Utility Model Content
[0003] In order to solve the problems in the background technology, the utility model provides a liquid level float switch with an anti-sticking extension. The utility model is provided with a controller housing extension, which can prevent the sticky and easily hardened material retained in the installation neck of the liquid level switch from adversely affecting the hinged rotation of the connecting rod.
[0004] The technical solution provided by the utility model is: a liquid level float switch with an anti-sticking extension part, comprising a controller housing, a connecting flange, a flange, a sensing touch rod, a connecting rod and a float, a control circuit is arranged in the controller housing, the sensing touch rod is electrically connected to the control circuit, the flange is located at the end of the controller housing, the flange is hinged to one end of the connecting rod, the other end of the connecting rod is connected to the float, an annular magnet is arranged in the connecting rod, the connecting flange is connected to the controller housing, a controller housing extension part is arranged between the connecting flange and the flange, one end of the sensing touch rod is fixedly connected to the flange or the controller housing extension part, the other end of the sensing touch rod is suspended and located above the connecting rod, and an angle or spacing exists between the sensing touch rod and the connecting rod to reduce the risk of the sensing touch rod and the connecting rod being adhered by the easily hardened substances in the measured liquid.
[0005] A further technical solution is that a temperature sensor is arranged inside the induction touch rod.
[0006] A further technical solution is: a delayed output element is connected inside the control circuit to delay output of data.
[0007] A further technical solution is: a short shaft is fixedly connected to the side of the flange, a radial through hole is processed at the end of the connecting rod, the through hole gap is sleeved on the short shaft, and positioning pins are arranged on the short shaft on both sides of the through hole.
[0008] Compared with the prior art, the beneficial effects of the utility model are:
[0009] 1. The utility model is provided with a controller housing extension portion between the flange and the flange. After the utility model is connected to the tank body, the controller housing extension portion completely passes through the liquid level switch mounting neck, so that the sticky and hardened material retained in the liquid level switch mounting neck cannot have an adverse effect on the hinged rotation of the connecting rod.
[0010] 2. The present invention uses a new type of connecting rod with an angle or a spacing between the connecting rod and the sensing rod to reduce the risk of the sensing rod and the connecting rod being adhered to by the easily hardened substances in the measured liquid.
[0011] 3. Since the utility model generally installs one at the high, middle and low position of the tank, the temperature sensor installed on the sensing rod can also play a role in monitoring the approximate position of the liquid level. For example: when the tank is filled with high-temperature liquid, the approximate position of the liquid level can be determined by the readings of the three temperature sensors.
[0012] 4. When the liquid level in the tank changes, the liquid surface will fluctuate and the float will follow the fluctuation of the liquid surface. In order to reduce the monitoring error of the liquid level float switch, a delayed output element is connected in the control circuit. By setting a specific delay value, the data is delayed in output, thereby improving the accuracy of liquid level monitoring.
[0013] 5. In the prior art, the connection between the flange and the connecting rod mostly uses a fork joint, which has poor anti-hardening and anti-adhesion capabilities. The flange and the connecting rod of the utility model are connected in a very simple way, reducing the probability of adhesion between the flange and the connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of an existing liquid level float switch.
[0015] Figure 2 It is a structural schematic diagram of the utility model.
[0016] Figure 3 It is a schematic diagram of the connection relationship between the flange and the connecting rod in the utility model.
[0017] In the figure: 1. Float; 2. Connecting rod; 3. Temperature sensor; 4. Sensing rod; 5. Flange; 6. Extended part of controller housing; 7. Tank body; 8. Liquid level switch mounting neck; 9. Connecting flange; 10. Controller housing; 11. Short shaft; 12. Positioning pin. DETAILED DESCRIPTION
[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0019] This embodiment includes a controller housing 10, a connecting flange 9, a flange 5, a sensing touch rod 4, a connecting rod 2 and a float 1. A control circuit is arranged in the controller housing 10, and the sensing touch rod 4 is electrically connected to the control circuit. The flange 5 is located at the end of the controller housing 10, and the flange 5 is hinged to one end of the connecting rod 2. The other end of the connecting rod 2 is connected to the float 1. An annular magnet is arranged in the connecting rod 2, and the connecting flange 9 is connected to the controller housing 10. The above is the technology that already exists in the prior art and will not be repeated here.
[0020] The innovations of this embodiment are as follows:
[0021] 1. A controller housing extension 6 is provided between the connecting flange 9 and the flange 5. Figure 2 As shown, after this embodiment is connected to the tank body 7, the controller housing extension portion 6 completely passes through the liquid level switch mounting neck 8, so that the sticky and hardened material retained in the liquid level switch mounting neck 8 cannot adversely affect the hinged rotation of the connecting rod 2.
[0022] 2. One end of the sensing touch rod 4 is fixedly connected to the flange 5 or the extended portion 6 of the controller housing, and the other end of the sensing touch rod 4 is suspended and located above the connecting rod 2. When the connecting rod 2 and the sensing touch rod 4 are close to each other, a signal is generated, and the signal is transmitted to the control circuit through the sensing touch rod 4. The circuit control is not the point that the present application requires to be protected. The point that the present application requires to be protected is that there is an angle or a spacing between the sensing touch rod 4 and the connecting rod 2 to reduce the risk of the sensing touch rod 4 and the connecting rod 2 being adhered to each other by the easily hardened substances in the measured liquid.
[0023] 3. The temperature sensor 3 is arranged in the sensing rod 4. Since the utility model generally installs one temperature sensor 3 at the high, middle and low positions of the tank body 7, the temperature sensor 3 installed on the sensing rod 4 can also play a role in monitoring the approximate position of the liquid level. For example, when the tank body 7 contains high-temperature liquid, the approximate position of the liquid level can be determined by the readings of the three temperature sensors 3.
[0024] Fourth, the control circuit is connected with a time-delay output element for delaying the output of data. Because when the liquid level in the tank 7 changes, the liquid surface will fluctuate, and the float 1 will also follow the fluctuation of the liquid surface. In order to reduce the monitoring error of the liquid level float 1 switch, a time-delay output element is connected in the control circuit, and by setting a specific delay value, the data is delayed and output, thereby improving the accuracy of liquid level monitoring.
[0025] 5. The flange 5 is fixedly connected to the side with a short shaft 11, and the end of the connecting rod 2 is processed with a radial through hole, and the through hole gap is set on the short shaft 11, and the short shaft 11 on both sides of the through hole is provided with a positioning pin 12. In the prior art, the flange 5 and the connecting rod 2 are mostly connected by a fork joint, which has poor anti-hardening and anti-adhesion capabilities. The flange 5 of the utility model is connected to the connecting rod 2 in a very simple way, which reduces the probability of adhesion between the flange 5 and the connecting rod 2.
Claims
1. A liquid level float switch with an anti-sticking extension, comprising a controller housing (10), a connecting flange (9), a flange (5), a sensing touch rod (4), a connecting rod (2) and a float (1), wherein a control circuit is arranged in the controller housing (10), the sensing touch rod (4) is electrically connected to the control circuit, the flange (5) is located at the end of the controller housing (10), the flange (5) is hinged to one end of the connecting rod (2), the other end of the connecting rod (2) is connected to the float (1), an annular magnet is arranged in the connecting rod (2), the connecting flange (9) is connected to the controller housing (10), and is characterized in that: A controller housing extension portion (6) is provided between the connecting flange (9) and the flange (5); one end of the sensing touch rod (4) is fixedly connected to the flange (5) or the controller housing extension portion (6); the other end of the sensing touch rod (4) is suspended in the air and located above the connecting rod (2); an angle or a distance exists between the sensing touch rod (4) and the connecting rod (2) to reduce the risk of the sensing touch rod (4) and the connecting rod (2) being adhered to by substances in the measured liquid that are easy to harden.
2. A liquid level float switch with an anti-sticking extension according to claim 1, characterized in that: A temperature sensor (3) is arranged inside the sensing touch rod (4).
3. The liquid level float switch with an anti-sticking extension according to claim 1, characterized in that: The control circuit is connected with a delayed output element for delaying the output of data.
4. The liquid level float switch with an anti-sticking extension according to claim 1, characterized in that: The flange (5) is fixedly connected to a short shaft (11) on its side, the end of the connecting rod (2) is processed with a radial through hole, the through hole is gap-fitted on the short shaft (11), and positioning pins (12) are provided on the short shaft (11) on both sides of the through hole.