Material level detecting, cleaning and protecting device

Abstract

The utility model relates to a material level detecting, cleaning and protecting device which comprises a material level detecting instrument, a fixing flange, a lengthened connecting pipe, a material bin and a gas path blowing hole. One end of the lengthened connecting pipe is fixed to the top of the material bin, and the other end of the lengthened connecting pipe is connected to the lower surface of the fixing flange. The material level detection instrument is detachably and fixedly connected with the upper surface of the fixing flange, the emission source end face of the material level detection instrument is located in the fixing flange and faces the material bin, and the gas path purging hole is formed in the lengthened connecting pipe. The material level detection cleaning and protecting device has the advantages of being reasonable in structure, safe, reliable, capable of meeting material level detection of various dust and water vapor media, capable of guaranteeing relative accuracy of measurement and the like, and is improvement and innovation of material level detection in a specific environment.

Description

Technical Field

[0001] The utility model relates to the technical field of level detection, in particular to a level detection cleaning and protection device. Background Technique

[0002] In the silos, reaction tanks and various liquid storage tanks of factories and mines, according to different production processes, non-contact ultrasonic, radar and other level gauges are generally adopted. Due to the different properties of the detected materials, some measured media are dust materials, and some measured media are steam liquids. After the level gauge works for a period of time, the outer end face of the emission source is easily blocked, corroded by dust and condensate, directly affecting the detection accuracy and causing great impact on the automatic control operation of the production process.

[0003] The level measurement and control device for the storage space with top movement and surrounding scattering disclosed in CN 212391087 U, the radar material gauge includes a material gauge body, a flange is fixedly connected to the bottom of the material gauge body, a top plate is arranged at the top of the material gauge body, and an air path cleaning device is arranged between the top plate and the flange. The air path cleaning device includes several first pipes arranged around the radar material gauge and fixedly connected to the top plate at one end and a second pipe connected to the air purge interface at the bottom of the radar material gauge. Several air blowing ports facing the radar level gauge are arranged on the first pipe. The air path cleaning device of the prior art reduces the influence of dust on the radar detector, but the air path cleaning device only has a cleaning function and no protection function.

[0004] The anti-crystallization radar level gauge disclosed in CN 108645484 A, a cleaning bucket is arranged on the outer top of the protective cover, a conduit is arranged on the flange, and the liquid injection port on the conduit passes through the protective cover and is detachably communicated with the liquid outlet on the cleaning bucket. At least two outlets are arranged on the conduit, and a cleaning pipe is communicated with each outlet, and a plurality of spray heads facing the antenna are arranged on the cleaning pipe. The cleaning mechanism of the prior art cooperates with the cleaning bucket and the spray heads to clean the crystals on the antenna to prevent the influence of crystallization on the measurement accuracy, but the cleaning mechanism only has a cleaning function and no protection function.

[0005] A level detection device disclosed in CN 209043420 U. An ultrasonic transmitter and an ultrasonic receiver are respectively installed on the sensor mounting flanges of two sensor mounting members. One end of the sensor connecting member is installed with a welding cover, and the other end is installed with a sensor mounting flange. A first through hole for the level sensor signal to pass through is opened on the welding cover, and a second through hole for the level sensor signal to pass through is opened on the sensor connecting member. A cleaning port is provided on the top plate of the welding cover, and media such as water can be input through the cleaning port to wash and clean the isolation material in the connecting pipe of the sensor connecting member. This prior art effectively separates the level sensor from the material to be detected by using the welding cover and the sensor connecting member, and uses the cleaning port on the welding cover to prevent the material from adhering to the isolation material, but the structure is complex and time-consuming for disassembly, cleaning and maintenance.

[0006] Based on this, there is room for improvement in the aspect of level detection cleaning and protection. Utility Model Content

[0007] In view of this, the purpose of the present utility model is to provide a level detection cleaning and protection device to solve the technical problem that the outer end face of the emission source of the level gauge is easily blocked, corroded by dust and condensed water, resulting in inaccurate detection.

[0008] In order to achieve the above purpose, the technical solution provided by the present utility model is:

[0009] A level detection cleaning and protection device, including a level detection instrument, a fixed flange, an extended connecting pipe, a material bin and an air path purge hole. One end of the extended connecting pipe is fixed to the top of the material bin and the other end is connected to the lower surface of the fixed flange. The level detection instrument is detachably fixedly connected to the upper surface of the fixed flange. The emission source end face of the level detection instrument is located in the fixed flange and faces the material bin. The air path purge hole is provided on the extended connecting pipe.

[0010] In some embodiments, the level detection instrument further includes a display instrument and a mounting flange. The display instrument is arranged away from the material bin and configured to display the measurement result. The mounting flange is combined with the fixed flange for connecting the level detection instrument and the extended connecting pipe.

[0011] In some embodiments, the diameter of the extended connecting pipe is larger than the perimeter of the emission source end face of the level detection instrument, so that the emission source end face is located within the range corresponding to the extended connecting pipe.

[0012] In some embodiments, the air path purge hole is provided in the height range of the extended connecting pipe and penetrates the extended connecting pipe. The height range of the extended connecting pipe refers to the height range on the extended connecting pipe that does not affect the emission and reception bands of the level detection instrument.

[0013] In some embodiments, the air path purge hole has an inclined angle relative to the extended connecting pipe, and the inclined angle is calculated based on the length of the extended connecting pipe and the depth at which the emitting source end face of the level detection instrument is inserted into the extended connecting pipe.

[0014] In some embodiments, the aperture diameter of the air path purge hole is obtained in the following manner: Calculate the amount of gas required for cleaning and protection according to the dust condition and working characteristics of the measured medium, and then calculate the aperture diameter of the air path purge hole.

[0015] In some embodiments, the level detection cleaning and protection device includes an air path purge hole fixing device, which corresponds to the air path purge hole and is fixed to the extended connecting pipe.

[0016] In some embodiments, the inner diameter of the air path purge hole fixing device is the same as the aperture diameter of the air path purge hole.

[0017] In some embodiments, the air path purge hole fixing device has an inclined angle with respect to the extended connecting pipe, and the inclined angle of the air path purge hole fixing device with respect to the extended connecting pipe is the same as the inclined angle of the air path purge hole relative to the extended connecting pipe.

[0018] In some embodiments, the level detection cleaning and protection device includes an air path purge hole pipe, which is installed on the extended connecting pipe through the air path purge hole fixing device. The air path purge hole pipe is connected to the pipeline of the purge gas, and the inner diameter of the air path purge hole pipe is the same as the inner diameter of the air path purge hole fixing device.

[0019] The beneficial effects of the present utility model are as follows:

[0020] The air path purge hole of the level detection cleaning and protection device of the present utility model makes the blown gas exactly blow to the emitting source end face of the level detection instrument, ensuring that the surface of the emitting source end face is clean and free of dirt. Moreover, the blown gas forms an air path barrier inside the extended connecting pipe, preventing dust, water vapor, etc. of the measured medium from entering the connection cavity between the fixed flange, the extended connecting pipe, and the emitting source end face of the level detection instrument. The level detection cleaning and protection device has the advantages of reasonable structure, safety and reliability, being able to meet the level detection of various dust and water vapor media, and ensuring relatively accurate measurement. It is an improvement and innovation for level detection in a specific environment. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other embodiments can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of an existing ordinary material level detection structure;

[0023] Figure 2 It is a schematic diagram of a material level detection cleaning and protection device provided by an embodiment of the present invention. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the embodiments of the present invention in detail with reference to specific embodiments and the accompanying drawings.

[0025] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as limitations on the embodiments of the present invention. This will not be elaborated one by one in the subsequent embodiments.

[0026] As Figure 1 shown, the existing ordinary material level detection structure includes a material level detection instrument 1', a fixed flange 2', a connecting pipe 3' and a material bin 4'. One end of the connecting pipe 3' is fixed to the top of the material bin 4' and the other end is connected to the lower surface of the fixed flange 2'. The material level detection instrument 1' is detachably fixedly connected to the upper surface of the fixed flange 2'. The emission source end face 5' of the material level detection instrument 1' is located in the fixed flange 2' and faces the material bin 4'. After the material level detection instrument 1' works for a period of time, the emission source end face 5' is easily blocked, corroded by dust and condensate water, which affects the detection accuracy of the material level detection instrument 1' and is not conducive to the automatic control operation of the production process.

[0027] The present invention provides a material level detection cleaning and protection device, as Figure 2 shown, which includes a material level detection instrument 1, a fixed flange 2, an extended connecting pipe 3, a material bin 4 and an air path purge hole. One end of the extended connecting pipe 3 is fixed to the top of the material bin 4 and the other end is connected to the lower surface of the fixed flange 2. The material level detection instrument 1 is detachably fixedly connected to the upper surface of the fixed flange 2. The emission source end face 5 of the material level detection instrument 1 is located in the fixed flange 2 and faces the material bin 4. The air path purge hole is provided on the extended connecting pipe 3.

[0028] Compared with the existing ordinary material level detection structure, the air path purge hole of the material level detection cleaning and protection device of the present invention enables the blown gas to exactly blow to the emission source end face 5 of the material level detection instrument 1, ensuring that the surface of the emission source end face 5 is clean and free of dirt. Moreover, the blown gas forms an air path barrier inside the extended connecting pipe 3, preventing dust, water vapor, etc. of the measured medium from entering the fixed flange 2 and the connection cavity between the extended connecting pipe 3 and the emission source end face 5 of the material level detection instrument 1.

[0029] In some embodiments, the level detection instrument 1 is a non-contact level detection instrument, i.e., a flange-mounted instrument that meets the requirements of the measured medium.

[0030] In some embodiments, the level detection instrument 1 further includes a display instrument and a mounting flange 6. The display instrument is arranged away from the material bin 4 and configured to display the measurement result. The mounting flange 6 is combined with the fixed flange 2 for connecting the level detection instrument 1 to the extension connecting pipe 3.

[0031] In some embodiments, one end of the extension connecting pipe 3 is fixed to the top of the material bin 4 by welding.

[0032] In some embodiments, compared with the existing ordinary level detection structure, the length of the extension connecting pipe 3 is increased, that is, the length of the extension connecting pipe 3 is greater than the length of the connecting pipe 3' of the existing ordinary level detection structure, so as to facilitate the setting of air purge holes on the extension connecting pipe 3. However, the length of the extension connecting pipe 3 should not be too long to prevent affecting the detection effect of the level detection instrument 1.

[0033] In some embodiments, the diameter of the extension connecting pipe 3 is larger than the periphery of the emission source end face 5 of the level detection instrument 1, so that the emission source end face 5 can be located within the range corresponding to the extension connecting pipe 3 (for example, in Figure 2 the shown embodiment, the emission source end face 5 can be located within the upward extension range of the extension connecting pipe 3), ensuring the connection between the level detection instrument 1 and the extension connecting pipe 3. Therefore, the level detection instrument 1 can be connected to the material bin 4 through the extension connecting pipe 3 to detect the medium in the material bin 4.

[0034] In some embodiments, the fixed flange 2 has the same standard as the mounting flange 6 of the level detection instrument 1, and the fixed flange 2 and the mounting flange 6 have the same size to ensure the sealed and fixed connection between the level detection instrument 1 and the extension connecting pipe 3.

[0035] In some embodiments, the material of the extension connecting pipe 3 meets the temperature and corrosiveness requirements of the measured medium in the material bin 4, so as to ensure the service life of the level detection instrument 1.

[0036] In some embodiments, the air purge holes are arranged in the height interval of the extension connecting pipe 3 and penetrate the extension connecting pipe 3. The height interval of the extension connecting pipe 3 refers to the height interval on the extension connecting pipe 3 that does not affect the emission and reception bands of the level detection instrument 1. The height interval can be measured with any end of the extension connecting pipe 3 as the zero point.

[0037] In some embodiments, at the installation height within the height interval of the extension connecting pipe 3, the air purge holes are uniformly arranged along the periphery of the extension connecting pipe 3.

[0038] In some embodiments, the installation height within the height range of the extended connecting pipe 3 is calculated based on the length of the extended connecting pipe 3 and the depth at which the emission source end face 5 of the level detection instrument 1 is inserted into the extended connecting pipe 3.

[0039] In some embodiments, the gas path purge holes have an inclination angle relative to the extended connecting pipe 3. The inclination angle refers to the angle between the axis of the gas path purge holes and the length direction of the extended connecting pipe 3. The inclination angle is calculated based on the length of the extended connecting pipe 3 and the depth at which the emission source end face 5 of the level detection instrument 1 is inserted into the extended connecting pipe 3.

[0040] In some embodiments, at the installation height within the height range of the extended connecting pipe 3, the first gas path purge hole 7, the second gas path purge hole 8, and the third gas path purge hole 9 are arranged at intervals of 120 degrees along the perimeter of the extended connecting pipe 3. As Figure 2 shown, the tips of the three arrows respectively indicate the positions of the first gas path purge hole 7, the second gas path purge hole 8, and the third gas path purge hole 9.

[0041] In some embodiments, the aperture diameter of the gas path purge holes is obtained in the following manner: Calculate the amount of cleaning and protective gas required based on the dust condition and working characteristics of the measured medium, and then calculate the pipe diameter of the gas path purge pipeline, which is the aperture diameter of the gas path purge holes.

[0042] In some embodiments, the level detection cleaning and protection device includes a gas path purge hole fixing device (not shown). The gas path purge hole fixing device corresponds to the gas path purge holes and is fixed to the extended connecting pipe 3. The gas path purge hole fixing device is used to connect the external purge gas, so that the external purge gas can enter the extended connecting pipe 3 through the gas path purge hole fixing device from the gas path purge holes. The purge gas entering the extended connecting pipe 3 forms a cleaning path to the emission source end face 5 of the level detection instrument 1 within the extended connecting pipe 3, that is, a gas path barrier to the emission source end face 5 is formed within the extended connecting pipe 3.

[0043] In some embodiments, the gas path purge hole fixing device is arranged on the extended connecting pipe 3 by welding and is communicated with the gas path purge holes.

[0044] In some embodiments, the inner diameter of the gas path purge hole fixing device is the same as the aperture diameter of the gas path purge holes, so that the purge gas passes through the gas path purge hole fixing device and the gas path purge holes at a constant flow rate.

[0045] In some embodiments, the air path purge hole fixing device has an inclined angle with the extended connecting pipe 3, and the inclined angle between the air path purge hole fixing device and the extended connecting pipe 3 is the same as the inclined angle of the air path purge holes relative to the extended connecting pipe 3. The inclined angle ensures that the purge gas blown into the extended connecting pipe 3 through the air path purge hole fixing device from the air path purge holes exactly blows onto the emission source end face 5 of the level detection instrument 1, so that the purge gas directly cleans the emission source end face 5, thereby ensuring that the emission source end face 5 is clean and free of dirt, and further ensuring the normal propagation of the waveband of the level detection instrument 1. At the same time, the purge gas blown into the extended connecting pipe 3 from the air path purge holes through the air path purge hole fixing device at an inclined angle enters the extended connecting pipe 3 at an inclined angle, thereby forming a regular air path barrier in the extended connecting pipe 3, preventing dust, water vapor, etc. of the measured medium from entering the connection cavity between the fixed flange 2 and the extended connecting pipe 3 and the emission source end face 5 of the level detection instrument 1, thus completing the cleaning and protection of the level detection instrument 1.

[0046] In some embodiments, the level detection cleaning and protection device includes an air path purge hole pipe (not shown), and the air path purge hole pipe is installed on the extended connecting pipe 3 through the air path purge hole fixing device, and the air path purge hole pipe is connected to the pipeline of the purge gas.

[0047] In some embodiments, the inner diameter of the air path purge hole pipe is the same as the inner diameter of the air path purge hole fixing device.

[0048] As Figure 2 shown, in one embodiment, the level detection cleaning and protection device includes a level detection instrument 1, a fixed flange 2, an extended connecting pipe 3, a material bin 4, three air path purge holes, three air path purge hole fixing devices, and three air path purge hole pipes. One end of the extended connecting pipe 3 is fixed to the top of the material bin 4 and the other end is connected to the lower surface of the fixed flange 2. The level detection instrument 1 is detachably fixedly connected to the upper surface of the fixed flange 2. The emission source end face 5 of the level detection instrument 1 is located in the fixed flange 2 and faces the material bin 4. The first air path purge hole 7, the second air path purge hole 8, and the third air path purge hole 9 are arranged on the extended connecting pipe 3 at the same height along the periphery of the extended connecting pipe 3 at intervals of 120 degrees in sequence. The first air path purge hole 7, the second air path purge hole 8, and the third air path purge hole 9 are inclined at the same angle relative to the extended connecting pipe 3. The three air path purge hole fixing devices are respectively fixed to the extended connecting pipe 3 in alignment with the first air path purge hole 7, the second air path purge hole 8, and the third air path purge hole 9. The three air path purge hole pipes are communicated with the pipeline of the purge gas and are respectively installed together with the three air path purge hole fixing devices.

[0049] The installation process of the level detection cleaning and protection device of the present utility model is as follows:

[0050] First, fixedly connect the fixed flange 2 to one end of the extended connecting pipe 3, and fix the other end of the extended connecting pipe 3 to the top of the material bin 4;

[0051] Secondly, fixedly connect the level detection instrument 1 to the fixed flange 2;

[0052] Secondly, calculate the required amount of cleaning and protective gas according to the dust condition and working characteristics of the measured medium, and then calculate the aperture diameter of the gas path purge holes;

[0053] Secondly, manufacture a fixing device for the gas path purge holes according to the aperture diameter of the gas path purge holes;

[0054] Secondly, calculate the installation height of the gas path purge holes on the extended connecting pipe 3 and the inclination angle of the gas path purge holes relative to the extended connecting pipe 3 according to the length of the extended connecting pipe 3 and the depth at which the emission source end face 5 of the level detection instrument 1 is inserted into the extended connecting pipe 3;

[0055] Secondly, at the installation height on the extended connecting pipe 3, arrange the first gas path purge hole 7, the second gas path purge hole 8, and the third gas path purge hole 9 along the periphery of the extended connecting pipe 3 at an interval of 120 degrees in an inclined angle manner on the extended connecting pipe 3;

[0056] Secondly, weld the three fixing devices for the gas path purge holes to the extended connecting pipe 3 in an inclined angle manner and aligned with the first gas path purge hole 7, the second gas path purge hole 8, and the third gas path purge hole 9 respectively;

[0057] Finally, connect the three gas path purge hole pipes to the pipeline of the purge gas and install them together with the three fixing devices for the gas path purge holes respectively.

[0058] When the level detection cleaning and protection device of the present utility model is in use, the purge gas passes through the three gas path purge hole pipes, the three fixing devices for the gas path purge holes, and the first gas path purge hole 7, the second gas path purge hole 8, and the third gas path purge hole 9 in sequence from the pipeline of the purge gas, and enters the extended connecting pipe 3, blowing off the dust on the surface of the emission source end face 5 of the level detection instrument 1 in the extended connecting pipe 3. This not only ensures the cleanliness of the emission surface and the receiving surface of the waveband of the level detection instrument 1, but also forms a regular gas path barrier below the emission source end face 5 of the level detection instrument 1 in the extended connecting pipe 3, preventing dust, water vapor, etc. of the measured medium from entering the connection cavity between the fixed flange 2, the extended connecting pipe 3, and the emission source end face 5 of the level detection instrument 1, thereby completing the cleaning and protection of the level detection instrument 1. The cleaning and protection device composed of the gas path purge hole pipes, the fixing devices for the gas path purge holes, and the gas path purge holes does not need to be remanufactured due to the replacement of the level detection instrument 1, and can work for a long time and efficiently.

[0059] The level detection, cleaning and protection device of the utility model has a simple structure, is advanced and reliable, easy to operate, ingeniously conceived, has a short process and is convenient to install. It provides strong hardware support for improving the production stability and quality of enterprises, enhances the continuity and efficiency of enterprise production, provides prospects for high-efficiency and high-quality production, improves the detection accuracy of the level gauge, and provides guarantee for continuous and stable production on site.

[0060] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0061] The above-described embodiments only represent several implementation manners of the present application, and the description is relatively specific and detailed. However, it should not be understood as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A level detection, cleaning and protection device, characterized in that, It includes a level detection instrument, a fixed flange, an extended connecting pipe, a material bin and an air path purging hole. One end of the extended connecting pipe is fixed to the top of the material bin and the other end is connected to the lower surface of the fixed flange. The level detection instrument is detachably fixedly connected to the upper surface of the fixed flange. The emitting source end face of the level detection instrument is located in the fixed flange and faces the material bin. The air path purging hole is arranged on the extended connecting pipe.

2. The level detection, cleaning and protection device according to claim 1, characterized in that The level detection instrument further includes a display instrument and a mounting flange. The display instrument is arranged away from the material bin and configured to display the measurement result. The mounting flange is combined with the fixed flange for connecting the level detection instrument to the extended connecting pipe.

3. The level detection, cleaning and protection device according to claim 1, characterized in that, The diameter of the extended connecting pipe is larger than the perimeter of the emitting source end face of the level detection instrument, such that the emitting source end face is located within the range corresponding to the extended connecting pipe.

4. The level detection, cleaning and protection device according to claim 1, characterized in that, The air path purging hole is arranged in a height interval of the extended connecting pipe and penetrates the extended connecting pipe. The height interval of the extended connecting pipe refers to the height interval on the extended connecting pipe that does not affect the transmitting and receiving bands of the level detection instrument.

5. The level detection, cleaning and protection device according to claim 1, wherein The air path purging hole has an inclination angle relative to the extended connecting pipe, and the inclination angle is calculated based on the length of the extended connecting pipe and the depth at which the emitting source end face of the level detection instrument is inserted into the extended connecting pipe.

6. The level detection, cleaning and protection device according to claim 1, characterized in that The aperture of the air path purging hole is obtained in the following manner: calculate the required amount of purging and protective gas according to the dust condition and working characteristics of the measured medium, and then calculate the aperture of the air path purging hole.

7. The level detection, cleaning and protection device according to claim 5, characterized in that, It includes an air path purging hole fixing device, which corresponds to the air path purging hole and is fixed to the extended connecting pipe.

8. The level detection, cleaning and protection device according to claim 7, characterized in that, The inner diameter of the air path purging hole fixing device is the same as the aperture of the air path purging hole.

9. The level detection, cleaning and protection device according to claim 7, characterized in that The air path purging hole fixing device has an inclination angle with respect to the extended connecting pipe, and the inclination angle of the air path purging hole fixing device with respect to the extended connecting pipe is the same as the inclination angle of the air path purging hole with respect to the extended connecting pipe.

10. The level detection, cleaning and protection device according to claim 7, characterized in that, It includes an air path purging hole pipe, which is installed on the extended connecting pipe through the air path purging hole fixing device. The air path purging hole pipe is connected to the pipeline of the purging gas, and the inner diameter of the air path purging hole pipe is the same as the inner diameter of the air path purging hole fixing device.

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