Throw-in type liquid level transmitter

Abstract

The utility model relates to the technical field of liquid level transmitters, and discloses a throw-in type liquid level transmitter which comprises a detection head body, a filter sleeve is arranged at the bottom end of the detection head body, a plurality of filter holes are formed in the outer surface of the filter sleeve, and a mounting disc is arranged at the bottom end of the filter sleeve. Four arc-shaped flexible scraping plates which are arranged in a circumferential mode are hinged to the interior of the installation disc, and an installation sleeve is fixedly connected to the top end of each arc-shaped flexible scraping plate. According to the throw-in type liquid level transmitter, the filter sleeve is in threaded connection with the detection head body, so that the throw-in type liquid level transmitter can be conveniently disassembled and assembled, external impurities can be effectively blocked through the filter holes, and a large gear can be driven to rotate slowly through a small gear; therefore, the effect that the arc-shaped flexible scraper moves circularly around the surface of the filter sleeve is achieved, the filter sleeve is effectively and automatically cleaned underwater, the filter holes are prevented from being blocked, the water inlet passing ability of the filter sleeve is guaranteed, and the detection effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of liquid level transmitters, and in particular to a submersible liquid level transmitter. Background Art

[0002] Liquid level transmitter is a pressure sensor for measuring liquid level. It is based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. That is, it uses diffused silicon sensitive elements or ceramic capacitor pressure sensitive sensors to convert static pressure into electrical signals, which are then converted into standard electrical signals after temperature compensation and linear correction. Liquid level transmitters are widely used in the liquid level measurement of various media in systems and industries such as petrochemicals, metallurgy, electricity, pharmaceuticals, water supply and drainage, and environmental protection.

[0003] The existing patent (Announcement No.: CN215984750U) discloses a submersible liquid level transmitter, including a display, a detection head, a cable connected between the display and the detection head, and a hemispherical protective mesh cover. The detection head includes a sealed shell, and an amplifier circuit, a circuit compensation board and a pressure sensitive sensor placed in the sealed shell. The protective cover of the cable is sealed and connected to the upper end of the sealed shell. The core wire of the cable is electrically connected to the amplifier circuit, the amplifier circuit is electrically connected to the circuit compensation board, the circuit compensation board is electrically connected to the pressure sensitive sensor, and the pressure sensitive sensor is installed inside the lower end of the shell. The edge of the hemispherical protective mesh cover is provided with an outer convex ring, and the outer thread sleeve of the lower end of the sealed shell is connected with an annular gland, and the outer convex ring is fixed to the lower end of the sealed shell by the annular gland. The utility model can not only protect the pressure sensitive sensor of the detection head, but also increase the liquid inlet area and reduce the risk of liquid inlet being blocked.

[0004] The above-mentioned device installs a hemispherical protective mesh cover at the lower end of the sealing shell to protect the pressure sensitive sensor through the hemispherical protective mesh cover. When the detection head is put into the liquid, the liquid can enter and contact the pressure sensitive sensor through the hemispherical protective mesh cover to realize liquid level monitoring. The hemispherical protective mesh cover has a relatively large liquid inlet area, which reduces the risk of liquid inlet being blocked. At the same time, the hemispherical protective mesh cover is fixed by an annular pressure cover, which is easy to install and disassemble. However, during use, when some sewage rivers are continuously monitored, due to the large amount of impurities in the sewage, the surface of the protective mesh cover is easily covered by impurities, thereby affecting the water flow and the detection effect. The user is required to regularly take out the liquid level transmitter monitoring head and then clean the hemispherical protective mesh cover, which is relatively cumbersome. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present application provides a submersible liquid level transmitter with advantages such as anti-clogging. It solves the problem that when some sewage rivers are continuously monitored during use, the surface of the protective mesh cover is easily covered with impurities due to the large amount of impurities in the sewage, thereby affecting the permeability of the water flow and the detection effect. The user needs to regularly remove the monitoring head of the liquid level transmitter and then clean the hemispherical protective mesh cover, which is a rather cumbersome problem.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a submersible liquid level transmitter, comprising a detection head body, a filter sleeve is provided at the bottom end of the detection head body, a plurality of filter holes are provided on the outer surface of the filter sleeve, a mounting plate is provided at the bottom end of the filter sleeve, four circularly arranged arc-shaped flexible scrapers are hingedly connected to the interior of the mounting plate, and a mounting sleeve is fixedly connected to the top end of each arc-shaped flexible scraper.

[0007] Through the above scheme, the threaded connection between the filter sleeve and the detection head body can be easily disassembled and assembled. The setting of the filter hole can effectively block external impurities. The setting of the small gear can drive the large gear to rotate slowly, thereby achieving the circular motion effect of the arc-shaped flexible scraper around the surface of the filter sleeve, effectively automatically cleaning the filter sleeve underwater, avoiding clogging of the filter hole, ensuring the water permeability of the filter sleeve, and thus improving the detection effect.

[0008] Furthermore, the mounting plate is rotatably connected to the bottom end of the filter sleeve.

[0009] Through the above solution, the purpose of the arc-shaped flexible scraper rotating around the circumference of the filter sleeve can be achieved through the rotational connection between the mounting plate and the filter sleeve.

[0010] Furthermore, the filter sleeve is threadedly connected to the bottom end of the detection head body.

[0011] According to the above solution, the filter sleeve is connected with the detection head body through threads, so that the user can easily disassemble the filter sleeve.

[0012] Furthermore, a large gear is rotatably connected to the bottom end of the detection head body, and a plurality of circumferentially arranged fixing rods are threadedly connected to the upper surface of the large gear, and the bottom end of each fixing rod is threadedly connected to a mounting sleeve adjacent thereto.

[0013] Through the above solution, the arc-shaped flexible scraper can be fixed by the threaded connection between the fixing rod and the mounting sleeve, so that the arc-shaped flexible scraper and the filter sleeve can be closely attached.

[0014] Furthermore, a fixing hoop is sleeved on the outer surface of the detection head body, a miniature waterproof motor is installed inside the left end of the fixing hoop, the output end of the miniature waterproof motor is fixedly connected to a power shaft, the bottom end of the power shaft is fixedly connected to a small gear, and the small gear is meshingly connected to the large gear.

[0015] Through the above scheme, by setting up the miniature waterproof motor, the purpose of providing power for the rotation of the large gear can be achieved.

[0016] Furthermore, a double-headed threaded rod is inserted into the right side of the fixing hoop, and nuts are threadedly connected to both ends of the double-headed threaded rod.

[0017] Through the above scheme, by setting the nut, the purpose of fixing the fixing hoop can be achieved, making it convenient for users to disassemble the micro waterproof motor.

[0018] Furthermore, a rotating disk is fixedly connected to the upper surface of each fixing rod.

[0019] Through the above solution and the setting of the turntable, it is convenient for the user to rotate the fixing rod.

[0020] Furthermore, a liquid inlet hole is provided on the outer surface of the detection head body.

[0021] Through the above scheme, by setting the liquid inlet hole, it is easy for external water to enter the liquid inlet hole, which is convenient for monitoring.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The immersion type liquid level transmitter can be easily disassembled and assembled by threaded connection between the filter sleeve and the detection head body, and can effectively block external impurities by setting the filter holes, and can drive the large gear to rotate slowly by the small gear, thereby realizing the circular motion effect of the arc-shaped flexible scraper around the surface of the filter sleeve, effectively automatically cleaning the filter sleeve underwater, avoiding blockage of the filter holes, ensuring the water permeability of the filter sleeve, and thus improving the detection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the front view of the overall structure of this application;

[0025] Figure 2 This is a cross-sectional view of the overall structure of this application;

[0026] Figure 3 It is a three-dimensional schematic diagram of the overall structure of this application;

[0027] Figure 4 This is a bottom view of the overall structure of this application.

[0028] In the figure:

[0029] 1. Detection head body; 2. Filter sleeve; 3. Filter hole; 4. Mounting plate; 5. Arc-shaped flexible scraper; 6. Mounting sleeve; 7. Large gear; 8. Fixed rod; 9. Fixed hoop; 10. Micro waterproof motor; 11. Power shaft; 12. Small gear; 13. Double-headed threaded rod; 14. Nut; 15. Turntable; 16. Liquid inlet hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] See also Figure 1 , Figure 2 and Figure 3 A submersible liquid level transmitter in this embodiment includes a detection head body 1. A filter sleeve 2 is provided at the bottom end of the detection head body 1. The filter sleeve 2 is threadedly connected to the bottom end of the detection head body 1. The threaded connection between the filter sleeve 2 and the detection head body 1 facilitates the user to disassemble the filter sleeve 2. A liquid inlet hole 16 is provided on the outer surface of the detection head body 1. The setting of the liquid inlet hole 16 facilitates external water to enter the liquid inlet hole 16, which is convenient for monitoring.

[0032] See also Figure 1 , Figure 3 and Figure 4 A plurality of filter holes 3 are provided on the outer surface of the filter sleeve 2, a mounting plate 4 is provided at the bottom end of the filter sleeve 2, four arc-shaped flexible scrapers 5 arranged in a circle are hinged inside the mounting plate 4, and the mounting plate 4 is rotatably connected to the bottom end of the filter sleeve 2. The rotational connection between the mounting plate 4 and the filter sleeve 2 can achieve the purpose of the arc-shaped flexible scraper 5 rotating around the filter sleeve 2.

[0033] See also Figure 1 , Figure 2 and Figure 3The top of each arc-shaped flexible scraper 5 is fixedly connected to a mounting sleeve 6, and the bottom end of the detection head body 1 is rotatably connected to a large gear 7. The upper surface of the large gear 7 is threadedly connected to a plurality of circumferentially arranged fixing rods 8, and the upper surface of each fixing rod 8 is fixedly connected to a turntable 15. The setting of the turntable 15 facilitates the user to rotate the fixing rod 8. The bottom end of each fixing rod 8 is threadedly connected to the mounting sleeve 6 close to it. The threaded connection between the fixing rod 8 and the mounting sleeve 6 can achieve the purpose of fixing the arc-shaped flexible scraper 5, and achieve the purpose of close contact between the arc-shaped flexible scraper 5 and the filter sleeve 2. A double-headed threaded rod 13 is inserted on the right side of the fixing hoop 9, and nuts 14 are threadedly connected to both ends of the double-headed threaded rod 13. Through the setting of the nut 14, the purpose of fixing the fixing hoop 9 can be achieved, and it is convenient for the user to disassemble the micro waterproof motor 10.

[0034] See also Figure 1 , Figure 2 and Figure 3 In addition, a fixing hoop 9 is sleeved on the outer surface of the detection head body 1, and a micro waterproof motor 10 is installed inside the left end of the fixing hoop 9. The output end of the micro waterproof motor 10 is fixedly connected to a power shaft 11, and the bottom end of the power shaft 11 is fixedly connected to a small gear 12. The small gear 12 is meshed and connected with the large gear 7. Through the setting of the micro waterproof motor 10, the purpose of providing power for the rotation of the large gear 7 can be achieved.

[0035] A submersible liquid level transmitter in the present embodiment can be easily disassembled and assembled through the threaded connection between the filter sleeve 2 and the detection head body 1. The setting of the filter hole 3 can effectively block external impurities. The setting of the small gear 12 can drive the large gear 7 to rotate slowly, thereby achieving the circular motion effect of the arc-shaped flexible scraper 5 around the surface of the filter sleeve 2, effectively automatically cleaning the filter sleeve 2 underwater, avoiding the blockage of the filter hole 3, ensuring the water inlet permeability of the filter sleeve 2, and thus improving the detection effect.

[0036] It should be noted that the waterproof grade of the micro waterproof motor 10 is IP68.

[0037] The working principle of the above embodiment is: when in use, the small gear 12 is driven to rotate by starting the micro waterproof motor 10, the rotation of the small gear 12 drives the large gear 7 to rotate, the large gear 7 drives the fixing rod 8 and the mounting sleeve 6 to rotate, and the mounting sleeve 6 drives the arc-shaped flexible scraper 5 to move in a circle around the detection head body 1, which can clean the surface impurities of the filter sleeve 2 and prevent impurities from clogging the filter hole 3, ensuring that the water flow of the liquid inlet hole 16 of the detection head body 1 enters normally, thereby improving the monitoring accuracy. When the filter sleeve 2 needs to be disassembled, it can be quickly disassembled by removing the fixing rod 8 and then rotating the filter sleeve 2.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0039] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A submersible liquid level transmitter, comprising a detection head body (1), characterized in that: A filter sleeve (2) is provided at the bottom end of the detection head body (1), a plurality of filter holes (3) are provided on the outer surface of the filter sleeve (2), a mounting plate (4) is provided at the bottom end of the filter sleeve (2), four arc-shaped flexible scrapers (5) arranged in a circle are hingedly connected inside the mounting plate (4), and a mounting sleeve (6) is fixedly connected to the top end of each arc-shaped flexible scraper (5).

2. The submersible liquid level transmitter according to claim 1 is characterized in that: The mounting plate (4) is rotatably connected to the bottom end of the filter sleeve (2).

3. The submersible liquid level transmitter according to claim 1 is characterized in that: The filter sleeve (2) is threadedly connected to the bottom end of the detection head body (1).

4. The submersible liquid level transmitter according to claim 1 is characterized in that: The bottom end of the detection head body (1) is rotatably connected to a large gear (7), and the upper surface of the large gear (7) is threadedly connected to a plurality of circumferentially arranged fixing rods (8), and the bottom end of each fixing rod (8) is threadedly connected to a mounting sleeve (6) adjacent thereto.

5. The submersible liquid level transmitter according to claim 1 is characterized in that: The outer surface of the detection head body (1) is sleeved with a fixing hoop (9), a micro waterproof motor (10) is installed inside the left end of the fixing hoop (9), the output end of the micro waterproof motor (10) is fixedly connected to a power shaft (11), the bottom end of the power shaft (11) is fixedly connected to a small gear (12), and the small gear (12) is meshingly connected to the large gear (7).

6. The submersible liquid level transmitter according to claim 5, characterized in that: A double-headed threaded rod (13) is inserted into the right side of the fixing hoop (9), and nuts (14) are threadedly connected at both ends of the double-headed threaded rod (13).

7. The submersible liquid level transmitter according to claim 4 is characterized in that: A rotating disk (15) is fixedly connected to the upper surface of each fixing rod (8).

8. The submersible liquid level transmitter according to claim 1 is characterized in that: The outer surface of the detection head body (1) is provided with a liquid inlet hole (16).

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