Liquid level transmitter with outer layer waterproof function

Abstract

The utility model relates to a liquid level transmitter with an outer layer waterproof function, which is characterized in that rubber sealing rings are respectively arranged at the connecting points of an air guide cable and a transmitter body and the connecting points of the air guide cable and a sensor, and the sealing rings at the corresponding parts are extruded and sealed through respective connecting structures, so that the best outer layer waterproof effect is achieved; on one hand, data transmission is ensured, and on the other hand, the transmitter body can be protected to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level transmitters, in particular to a liquid level transmitter with an outer layer waterproof function. Background Art

[0002] The liquid level transmitter is an extension and development of the pressure transmitter technology. It is based on the principle that the pressures generated by liquids of different specific gravities at different heights are in a linear relationship. It can accurately measure and transmit the volume, liquid height and weight of water, oil and paste.

[0003] The liquid level transmitter is a sensor that measures liquids. Its essence is in contact with water. Therefore, the sensor in the transmitter itself is not afraid of water. However, an air-conducting cable is required to connect the sensor and the transmitter body. The connection points between the cable, the sensor and the transmitter body need to be waterproofed. Otherwise, water may come into contact with the connection points during use, which may affect the transmission of sensor data and the life of the transmitter body. Summary of the invention

[0004] The utility model is a liquid level transmitter with an outer waterproof function. Rubber sealing rings are respectively arranged at the connection points between the gas guide cable and the transmitter body and the gas guide cable and the sensor, and the sealing rings at the corresponding positions are squeezed and sealed through their respective connection structures, thereby achieving the best outer waterproof effect. On the one hand, it ensures data transmission, and on the other hand, it can also provide a certain protective effect on the transmitter body.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A liquid level transmitter with an outer waterproof function comprises a transmitter body, a sensor and an air-conducting cable connecting the two. Rubber sealing rings are respectively provided at the connection points of the air-conducting cable and the transmitter body and at the connection points of the air-conducting cable and the sensor. The two sealing rings are respectively a first rubber sealing ring and a second rubber sealing ring.

[0007] The first rubber sealing ring at the connection point between the gas-guiding cable and the transmitter body is a conical structure. The first rubber sealing ring corresponds to the bottom of the transmitter body, and a through hole is provided at the center for the gas-guiding cable to pass through. An intermediate sleeve is provided on the outer side of the bottom of the transmitter body, and the intermediate sleeve is connected to the outside of the transmitter body, and a conical protrusion corresponding to the first rubber sealing ring is provided on the bottom of the intermediate sleeve.

[0008] Furthermore, the bottom surface of the first rubber sealing ring is inclined, and annular clamping rings are respectively provided on the top and bottom of the first rubber sealing ring, and clamping grooves are respectively provided on the inner wall of the intermediate sleeve at positions corresponding to the clamping rings.

[0009] Furthermore, evenly distributed annular fins are provided in the through hole of the first rubber sealing ring.

[0010] The second rubber sealing ring is an annular structure, and the second rubber sealing ring corresponds to the connection point between the air guide cable and the sensor; a limiting cylinder is provided on the outside of the second rubber sealing ring, and a ring plate supported to the top of the sensor is provided at the bottom of the limiting cylinder, and an annular nut is provided on the top of the limiting cylinder, and a tightening part supported to the top of the second rubber sealing ring is provided at the center of the nut; limiting claws are provided around the ring plate to fix the bottom of the sensor.

[0011] Furthermore, an annular positioning ring is provided outside the second rubber sealing ring, and the positioning ring corresponds to between the limiting cylinder and the second rubber sealing ring.

[0012] Furthermore, the limiting claw is a movable connection structure, the ring plate is provided with rows of slots, the limiting claw is a strip structure, the upper outer side of the limiting claw is provided with evenly distributed latch teeth, the upper part of the limiting claw is inserted into the slot and the outer edge of the slot is inserted through the outer latch teeth to achieve locking; the inner side of the bottom of the limiting claw is provided with claw teeth that are buckled into the bottom of the sensor; a limiting groove is provided on the outer side of the lower part of the limiting claw, and a C-shaped retaining spring is provided in the limiting groove, which are respectively buckled into the limiting grooves on the limiting claw to limit the limiting claw; the limiting claws and slots are provided with multiple groups evenly distributed in a ring shape.

[0013] The utility model adopts the above technical solution to achieve the following beneficial effects:

[0014] Extrusion seal rubber sealing rings are used to seal the connection points between the gas guide cable, the transmitter body and the sensor, effectively sealing the relatively weak links of the transmitter, thereby achieving better waterproof effect, preventing the line from being affected by water and affecting data transmission, and effectively protecting the transmitter body.

[0015] The slot-shaped structure of the limit claw and the ring plate enables it to cope with sensors of different specifications and has a better scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the utility model.

[0017] Figure 2 It is a cross-sectional view of the utility model.

[0018] Figure 3 It is a cross-sectional view of the first rubber sealing ring.

[0019] Figure 4 It is a schematic diagram of the disassembly of the sealing structure of the second rubber sealing ring and the sensor.

[0020] Figure 5 for Figure 4Schematic diagram from another angle. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be clear that the following embodiments are only one or more manifestations of the present invention and are not intended to be a complete limitation of the invention described in this application. Any improvements known to those skilled in the art made on the basis of the invention or technical solutions described in this application should fall within the scope of protection claimed in this application.

[0022] like Figure 1-Figure 5 A liquid level transmitter with an outer waterproof function is shown, which includes a transmitter body 1, a sensor 2 and an air-conducting cable 3 connecting the two. Rubber sealing rings are respectively provided at the connection points of the air-conducting cable 3 and the transmitter body 1 and at the connection points of the air-conducting cable 3 and the sensor 2. The two rubber sealing rings are respectively a first rubber sealing ring 401 and a second rubber sealing ring 402.

[0023] The first rubber sealing ring 401 at the connection point between the gas-guiding cable 3 and the transmitter body 1 is a conical structure. The first rubber sealing ring 401 corresponds to the bottom of the transmitter body 1, and a through hole 4011 is provided at the center for the gas-guiding cable 3 to pass through. An intermediate sleeve 4012 is provided on the outer side of the bottom of the transmitter body 1, and the intermediate sleeve 4012 is connected to the outside of the transmitter body 1, and a conical protrusion 4013 corresponding to the first rubber sealing ring 401 is provided at the bottom of the intermediate sleeve 4012.

[0024] Furthermore, the bottom surface of the first rubber sealing ring 401 is inclined, and annular clamping rings 4014 are respectively provided on the top and bottom of the first rubber sealing ring 401 , and clamping grooves 4015 are respectively provided on the inner wall of the intermediate sleeve 4012 at positions corresponding to the clamping rings 4014 .

[0025] Furthermore, evenly distributed annular fins 4016 are provided in the through hole 4011 of the first rubber sealing ring 401 .

[0026] The second rubber sealing ring 402 is an annular structure, and the second rubber sealing ring 402 corresponds to the connection point between the air guide cable 3 and the sensor 2; a limiting cylinder 4021 is provided on the outside of the second rubber sealing ring 402, and a ring plate 4022 supported to the top of the sensor 2 is provided at the bottom of the limiting cylinder 4021, and an annular nut 4023 is provided on the top of the limiting cylinder 4021, and a tightening part 4024 supported to the top of the second rubber sealing ring 402 is provided at the center of the nut 4023; limiting claws 4025 are provided around the ring plate 4022 to fix the bottom of the sensor 2.

[0027] Furthermore, an annular positioning ring 4026 is disposed outside the second rubber sealing ring 402 , and the positioning ring 4026 corresponds to between the limiting cylinder 4021 and the second rubber sealing ring 402 .

[0028] Furthermore, the limiting claw 4025 is a movable connection structure, the ring plate 4022 is provided with a row of slots 4027, the limiting claw 4025 is a strip structure, the upper outer side of the limiting claw 4025 is provided with evenly distributed latch teeth 4028, the upper part of the limiting claw 4025 is inserted into the slot 4027 and inserted into the outer edge of the slot 4027 through the outer latch teeth 4028 to achieve locking; the inner bottom side of the limiting claw 4025 is provided with claw teeth 4029 that are buckled into the bottom of the sensor 2; the lower outer side of the limiting claw 4025 is provided with a limiting groove 5, the limiting groove 5 is provided with a C-shaped retaining spring 6, and the retaining springs 501 are respectively buckled into the limiting grooves 5 on the limiting claw 4025 to limit the limiting claw 4025; the limiting claw 4025 and the slot 4027 are provided with multiple groups evenly distributed in a ring shape.

[0029] When the utility model is in use, an intermediate sleeve is arranged outside the first rubber sealing ring, and the connection between the transmitter body and the intermediate sleeve can squeeze the first rubber sealing ring so that it can better seal between the gas-guiding cable and the transmitter body, and the clamping ring can promote better positioning and sealing between the bottom surface of the first rubber sealing ring and the bottom surface of the intermediate sleeve, and the fin at the center of the first rubber sealing ring can also better fit and seal the gas-guiding cable during use.

[0030] The second rubber sealing ring is realized by the cooperation of the limiting cylinder, the limiting claw and the nut. The ring plate and the limiting claw fix the sensor. During the rotation of the nut, the tightening part squeezes the second rubber sealing ring, so that it is squeezed and sealed between the limiting cylinder and the air guide cable and between the sensors. The setting of the positioning cylinder provides better protection for the rubber sealing ring to prevent it from being squeezed out from possible gaps.

[0031] The structure of the limit claw and the slot hole allows the limit claw to be inserted into different slot holes to adapt to sensors of different diameters when corresponding to sensors of different sizes; and the C-shaped structure of the retaining spring allows it to adapt itself according to changes in the sensor diameter.

Claims

1. A liquid level transmitter with outer waterproof function, characterized in that: It includes a transmitter body, a sensor and an air-conducting cable connecting the two. Rubber sealing rings are respectively arranged at the connection points of the air-conducting cable and the transmitter body and at the connection points of the air-conducting cable and the sensor. The two sealing rings are respectively a first rubber sealing ring and a second rubber sealing ring.

2. The liquid level transmitter with outer waterproof function according to claim 1, characterized in that: The first rubber sealing ring at the connection point between the gas-guiding cable and the transmitter body is a conical structure. The first rubber sealing ring corresponds to the bottom of the transmitter body, and a through hole is provided at the center for the gas-guiding cable to pass through. An intermediate sleeve is provided on the outer side of the bottom of the transmitter body, and the intermediate sleeve is connected to the outside of the transmitter body, and a conical protrusion corresponding to the first rubber sealing ring is provided on the bottom of the intermediate sleeve.

3. The liquid level transmitter with outer waterproof function according to claim 2, characterized in that: The bottom surface of the first rubber sealing ring is inclined, and annular clamping rings are respectively arranged on the top and bottom of the first rubber sealing ring, and clamping grooves are respectively arranged on the inner wall of the middle sleeve at positions corresponding to the clamping rings.

4. The liquid level transmitter with outer waterproof function according to claim 3, characterized in that: Evenly distributed annular fins are arranged in the through hole of the first rubber sealing ring.

5. The liquid level transmitter with outer waterproof function according to claim 4, characterized in that: The second rubber sealing ring is an annular structure, and the second rubber sealing ring corresponds to the connection point between the air guide cable and the sensor; a limiting cylinder is provided on the outside of the second rubber sealing ring, and a ring plate supported to the top of the sensor is provided at the bottom of the limiting cylinder, and an annular nut is provided on the top of the limiting cylinder, and a tightening part supported to the top of the second rubber sealing ring is provided at the center of the nut; limiting claws are provided around the ring plate to fix the bottom of the sensor.

6. The liquid level transmitter with outer waterproof function according to claim 5, characterized in that: An annular positioning ring is arranged outside the second rubber sealing ring, and the positioning ring corresponds to between the limiting cylinder and the second rubber sealing ring.

7. The liquid level transmitter with outer waterproof function according to claim 6, characterized in that: The limiting claw is a movable connection structure, and a row of slots is provided on the ring plate. The limiting claw is a strip structure, and evenly distributed latch teeth are provided on the upper outer side of the limiting claw. The upper part of the limiting claw is inserted into the slot and the outer edge of the slot is inserted through the outer latch teeth to achieve locking; the inner side of the bottom of the limiting claw is provided with claw teeth that are buckled into the bottom of the sensor; a limiting groove is provided on the outer side of the lower part of the limiting claw, and a C-shaped retaining spring is provided in the limiting groove. The retaining springs are respectively buckled into the limiting grooves on the limiting claw to limit the limiting claw; the limiting claws and slots are provided with multiple groups evenly distributed in a ring shape.

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