Installation protection device for low-error high-precision ultralow-temperature liquid level meter

Abstract

The installation protection device for the low-error high-precision ultralow-temperature liquid level meter comprises a shell, the liquid level meter is arranged in an inner cavity of the shell, connecting plates are connected to the upper side and the lower side of the left side of the shell through threads, and fixing plates are connected to the upper side and the lower side of the right side of the shell through threads. A cleaning device is arranged on the outer side of the shell and comprises a first shell body and a second shell body, the first shell body is fixedly connected to the outer side of the connecting plate, the second shell body is fixedly connected to the outer side of the fixing plate, and by arranging the cleaning device, the output end of a servo motor drives a threaded rod to rotate; and the threaded sleeve and the connecting block move up and down to drive the cleaning brush to move, so that the cleaning brush moves along the surface of the shell, white frost on the surface of the shell is wiped away, automatic white frost wiping is achieved, the labor amount of workers is reduced, and observation of the workers is greatly facilitated.

Description

Technical Field

[0001] The utility model relates to a water level gauge, in particular to an installation protection device for a low-error and high-precision ultra-low temperature liquid level gauge, belonging to the technical field of water level gauges. Background Art

[0002] The water level gauge is also called a "liquid level gauge" or "liquid surface gauge". Because the water in the boiler vaporizes at high temperature for heating, the loss of water and steam is large. Water must be constantly replenished to keep the water level in the boiler at a certain height. If the water level is too low, the boiler is in danger of exploding. In order to know the water level in the boiler at any time, a water level gauge is installed on the boiler. The water level gauge and the boiler form a connecting vessel. Commonly used ones include glass level gauges, pressure level gauges, float level gauges, capacitance level gauges and resistance level gauges. Under high temperature and high pressure, isotope level gauges can also be used;

[0003] A Chinese public patent (publication number: CN 208476340 U) discloses an anti-icing gasket for a cryogenic liquid level gauge, which includes a main body shell, an exhaust pipe is fixedly installed on one side of the top end of the main body shell, a drain pipe is fixedly installed on one side of the bottom end of the main body shell, a symmetrical scale is arranged on one side of the outer surface of the main body shell, and a vacuum tube is arranged on the other side of the outer surface of the main body shell, a nameplate is fixedly installed on the side of the outer surface of the main body shell close to the symmetrical scale, a plurality of groups of magnetic flaps are equidistantly arranged on one side of the inner side of the main body shell, a float is arranged on the inner bottom of the main body shell, a lower flange is arranged on one side of the lower end of the main body shell, and a flange cover is arranged on one side of the lower end of the lower flange. The anti-icing gasket for a cryogenic liquid level gauge described in the utility model can enable the overall device to prevent the lower flange and the flange cover from freezing due to low temperature, which makes it difficult for users to disassemble, and facilitates users to use the overall device, bringing better prospects for use;

[0004] Although the above patent has a PTFE anti-cold gasket, when the user installs the PTFE anti-cold gasket between the lower flange and the flange cover, so that the user can prevent ice from forming between the lower flange and the flange cover when using the overall device, white frost will still form on the surface of the liquid level gauge under the influence of ambient temperature and humidity. During the process operation, the white frost on the surface of the liquid level gauge cannot provide a normal liquid level indication function, which seriously affects the process personnel's judgment of the liquid level of various low-temperature media on site and needs to be cleaned up, but this increases the workload and labor intensity of the staff. At the same time, there is a risk of personnel operation and damage to the glass panel when manually cleaning the white frost on the liquid level gauge panel, which brings troubles to safe production;

[0005] Therefore, a low-error and high-precision installation protection device for ultra-low temperature liquid level gauge is proposed. Utility Model Content

[0006] In view of this, the utility model provides a low-error and high-precision installation protection device for an ultra-low temperature liquid level gauge to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0007] The technical solution of the utility model is implemented as follows: a low-error high-precision ultra-low temperature liquid level gauge installation protection device comprises a shell, a liquid level gauge is arranged in the inner cavity of the shell, the upper and lower sides of the left side of the shell are connected with connecting plates through threads, the upper and lower sides of the right side of the shell are connected with fixing plates through threads, and a cleaning device is arranged on the outer side of the shell, and the cleaning device comprises a first shell and a second shell;

[0008] The first shell is fixedly connected to the outer side of the connecting plate, the second shell is fixedly connected to the outer side of the fixing plate, a servo motor is fixedly connected to the top of the first shell, a threaded rod is fixedly connected to the output end of the servo motor, a threaded sleeve is threadedly connected to the outer surface of the threaded rod, a connecting rod is fixedly connected to the top of the inner cavity of the second shell, a connecting block is provided on the outer surface sleeve of the connecting rod, and a cleaning brush is provided on the front side of the outer shell.

[0009] Further preferably, an assembly mechanism is provided on the outer side of the cleaning brush, and the assembly mechanism includes a support block, and the support block is fixedly connected to the left and right sides of the front side of the cleaning brush, and a plug hole is opened on the outer side of the support block.

[0010] Further preferably, the threaded sleeve is fixedly connected to a mounting block on the front side of the connecting block, a cavity is provided on the inner surface of the mounting block, a tension spring is fixedly connected to the inner side of the cavity, and a fixing block is fixedly connected to the outer side of the tension spring.

[0011] Further preferably, a pull rod is fixedly connected to the front side of the fixing block, an insertion rod is fixedly connected to the outer side of the fixing block, and the outer side of the insertion rod is inserted into the inner cavity of the insertion hole.

[0012] Further preferably, a bellows is fixedly connected to the top of the shell, and a fan is provided at the top of the inner cavity of the bellows.

[0013] Further preferably, the left and right sides of the inner cavity of the bellows are fixedly connected with support seats, the inner side of the support seats is fixedly connected with a heating rod, and the bottom of the bellows is fixedly connected with a ventilation net.

[0014] Further preferably, a threaded connection sleeve is fixedly connected to the upper and lower sides of the rear side of the shell, the inner surface of the threaded connection sleeve is threadedly connected to a screw rod, the outer surface of the screw rod is fixedly connected to a flange, and a regulating valve is provided at the bottom of the shell.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] 1. The utility model provides a cleaning device so that the output end of the servo motor drives the threaded rod to rotate, so that the threaded sleeve and the connecting block move up and down, and drives the cleaning brush to move, so that the cleaning brush moves along the surface of the shell, thereby wiping off the white frost on the surface of the shell, realizing automatic wiping of the white frost, reducing the workload of the staff, and greatly facilitating the staff to conduct observation.

[0017] Second, the utility model provides an assembly mechanism, and pulling the pull rod drives the tension spring to deform, so that the insertion rod leaves the inner cavity of the insertion hole, and the replacement and installation of the cleaning brush is completed, so that the cleaning brush is easy to replace and the flexibility of use is improved.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0021] Figure 2 It is a rear structural diagram of the utility model;

[0022] Figure 3 This is a structural diagram of the cleaning device of the utility model;

[0023] Figure 4 This is a structural diagram of the assembly mechanism of the utility model;

[0024] Figure 5 This is a cross-sectional structural diagram of the bellows of the present utility model.

[0025] 1. Casing; 2. Cleaning device; 201. First shell; 202. Second shell; 203. Servo motor; 204. Threaded rod; 205. Threaded sleeve; 206. Connecting rod; 207. Connecting block; 208. Cleaning brush; 3. Connecting plate; 4. Fixing plate; 5. Assembly mechanism; 501. Support block; 502. Socket; 503. Mounting block; 504. Cavity; 505. Tension spring; 506. Fixing block; 507. Pull rod; 508. Insert rod; 6. Bellows; 7. Fan; 8. Support seat; 9. Heating rod; 10. Ventilation net; 11. Threaded sleeve; 12. Screw rod; 13. Flange; 14. Regulating valve. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figure 1-5 As shown, the embodiment of the utility model provides a low-error and high-precision installation protection device for an ultra-low temperature liquid level gauge, including a shell 1, a liquid level gauge is arranged in the inner cavity of the shell 1, a connecting plate 3 is connected to the upper and lower sides of the left side of the shell 1 by threads, and a fixing plate 4 is connected to the upper and lower sides of the right side of the shell 1 by threads, and a cleaning device 2 is arranged on the outer side of the shell 1, and the cleaning device 2 includes a first shell 201 and a second shell 202;

[0030] The first shell 201 is fixedly connected to the outer side of the connecting plate 3, the second shell 202 is fixedly connected to the outer side of the fixing plate 4, the top of the first shell 201 is fixedly connected to the servo motor 203, the output end of the servo motor 203 is fixedly connected to the output end of the servo motor 203 is fixedly connected to the threaded rod 204, the outer surface of the threaded rod 204 is threadedly connected to the threaded sleeve 205, the top of the inner cavity of the second shell 202 is fixedly connected to the connecting rod 206, the outer surface sleeve of the connecting rod 206 is provided with a connecting block 207, and a cleaning brush 208 is provided on the front side of the outer shell 1.

[0031] By setting up the cleaning device 2, the output end of the servo motor 203 drives the threaded rod 204 to rotate, so that the threaded sleeve 205 and the connecting block 207 move up and down, driving the cleaning brush 208 to move, and the cleaning brush 208 moves along the surface of the shell 1, thereby wiping off the white frost on the surface of the shell 1, realizing automatic frost erasing, reducing the workload of the staff, and greatly facilitating the staff to conduct observation.

[0032] Example 2

[0033] In one embodiment, an assembly mechanism 5 is provided on the outer side of the cleaning brush 208, and the assembly mechanism 5 includes a support block 501, and the support block 501 is fixedly connected to the left and right sides of the front side of the cleaning brush 208. A socket 502 is provided on the outer side of the support block 501, and a mounting block 503 is fixedly connected to the front side of the threaded sleeve 205 and the connecting block 207. A cavity 504 is provided on the inner surface of the mounting block 503, and a tension spring 505 is fixedly connected to the inner side of the cavity 504, and a fixed block 506 is fixedly connected to the outer side of the tension spring 505, and a pull rod 507 is fixedly connected to the front side of the fixed block 506, and an insertion rod 508 is fixedly connected to the outer side of the fixed block 506, and the outer side of the insertion rod 508 is inserted into the inner cavity of the socket 502.

[0034] By setting the assembly mechanism 5, the cleaning brush 208 can be easily replaced, which improves the flexibility of use. By setting the cavity 504, the tension spring 505 can be easily installed. By setting the pull rod 507, the fixing block 506 can be easily pulled to squeeze the tension spring 505.

[0035] Example 3

[0036] In one embodiment, a bellows 6 is fixedly connected to the top of the outer shell 1, a fan 7 is arranged on the top of the inner cavity of the bellows 6, support seats 8 are fixedly connected to the left and right sides of the inner cavity of the bellows 6, a heating rod 9 is fixedly connected to the inner side of the support seat 8, a ventilation net 10 is fixedly connected to the bottom of the bellows 6, a threaded connection sleeve 11 is fixedly connected to the upper and lower sides of the rear side of the outer shell 1, a screw rod 12 is threadedly connected to the inner surface of the threaded connection sleeve 11, a flange 13 is fixedly connected to the outer surface of the screw rod 12, and a regulating valve 14 is arranged at the bottom of the outer shell 1.

[0037] By setting the fan 7, wind force can be generated by the rotation of the fan 7, by setting the support seat 8, the heating rod 9 can be easily installed, and by setting the screw rod 12 and the flange 13, the distance between the flange 13 and other media can be adjusted by rotating the screw rod 12.

[0038] When the utility model is working: when the surface of the shell 1 is covered with white frost, the inner cavity of the bellows 6 is first heated by the heating rod 9, and the hot air in the inner cavity of the bellows 6 is blown out to the surface of the shell 1 through the ventilation net 10 by the rotation of the fan 7, and then the servo motor 203 is started to work, and the threaded rod 204 is driven to rotate by the output end of the servo motor 203, and the threaded rod 204 drives the threaded sleeve 205 and the connecting block 207 to slide up and down through the effect of the threaded connection, and then the cleaning brush 208 moves along the surface of the shell 1 to clean the surface of the shell 1. After wiping off the white frost, pull the pull rod 507 outward, and the pull rod 507 drives the fixed block 506 to squeeze the tension spring 505 inward, so that the tension spring 505 is deformed, and drives the insertion rod 508 to leave the inner cavity of the socket 502. At this time, the cleaning brush 208 can be replaced, and then the pull rod 507 is released. The tension spring 505 is deformed again due to the loss of force, and drives the fixed block 506 and the insertion rod 508 to move outward, so that the insertion rod 508 is re-connected with the new cleaning brush 208, and the replacement and installation of the cleaning brush 208 is completed.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A low-error and high-precision installation protection device for ultra-low temperature liquid level gauge, characterized in that: The invention comprises a shell (1), wherein a liquid level gauge is arranged in an inner cavity of the shell (1), the upper and lower sides of the left side of the shell (1) are connected to connecting plates (3) by threads, and the upper and lower sides of the right side of the shell (1) are connected to fixing plates (4) by threads, and a cleaning device (2) is arranged on the outer side of the shell (1), and the cleaning device (2) comprises a first shell (201) and a second shell (202); The first shell (201) is fixedly connected to the outer side of the connecting plate (3), the second shell (202) is fixedly connected to the outer side of the fixing plate (4), the top of the first shell (201) is fixedly connected to a servo motor (203), the output end of the servo motor (203) is fixedly connected to a threaded rod (204), the outer surface of the threaded rod (204) is threadedly connected to a threaded sleeve (205), the top of the inner cavity of the second shell (202) is fixedly connected to a connecting rod (206), the outer surface sleeve of the connecting rod (206) is provided with a connecting block (207), and a cleaning brush (208) is provided on the front side of the outer shell (1).

2. The low-error and high-precision installation protection device for ultra-low temperature liquid level gauge according to claim 1 is characterized in that: An assembly mechanism (5) is provided on the outside of the cleaning brush (208), the assembly mechanism (5) comprising a support block (501), the support block (501) being fixedly connected to the left and right sides of the front side of the cleaning brush (208), and a socket (502) is provided on the outside of the support block (501).

3. The low-error and high-precision installation protection device for ultra-low temperature liquid level gauge according to claim 1 is characterized in that: A mounting block (503) is fixedly connected to the front side of the threaded sleeve (205) and the connecting block (207); a cavity (504) is provided on the inner surface of the mounting block (503); a tension spring (505) is fixedly connected to the inner side of the cavity (504); and a fixing block (506) is fixedly connected to the outer side of the tension spring (505).

4. The low-error and high-precision installation protection device for ultra-low temperature liquid level gauge according to claim 3 is characterized in that: A pull rod (507) is fixedly connected to the front side of the fixing block (506), an insertion rod (508) is fixedly connected to the outside of the fixing block (506), and the outside of the insertion rod (508) is inserted into the inner cavity of the insertion hole (502).

5. The low-error and high-precision installation protection device for ultra-low temperature liquid level gauge according to claim 1 is characterized in that: A bellows (6) is fixedly connected to the top of the outer shell (1), and a fan (7) is arranged at the top of the inner cavity of the bellows (6).

6. The low-error and high-precision installation protection device for ultra-low temperature liquid level gauge according to claim 5, characterized in that: The left and right sides of the inner cavity of the bellows (6) are fixedly connected to support seats (8), the inner side of the support seats (8) is fixedly connected to a heating rod (9), and the bottom of the bellows (6) is fixedly connected to a ventilation net (10).

7. The low-error and high-precision installation protection device for ultra-low temperature liquid level gauge according to claim 1 is characterized in that: A threaded connection sleeve (11) is fixedly connected to the upper and lower sides of the rear side of the housing (1); a screw rod (12) is connected to the inner surface of the threaded connection sleeve (11) via a thread; a flange (13) is fixedly connected to the outer surface of the screw rod (12); and a regulating valve (14) is provided at the bottom of the housing (1).

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