Demisting device of ultrasonic water meter

Abstract

The invention discloses a demisting device of an ultrasonic water meter, and relates to the technical field of ultrasonic water meters, the demisting device comprises a protective shell, the inner side of the protective shell is provided with a demisting mechanism, the demisting mechanism comprises an upper clamping ring, and the upper clamping ring is located at the top of the inner side of the protective shell; the middles of the left and right ends and the middles of the front and rear sides of the bottom of the upper clamping ring are each fixedly connected with a pipe inserting block, and a lower clamping ring is clamped to the bottom of the upper clamping ring. When demisting is conducted through the demisting mechanism, a motor drives fan blades fixedly connected with the output end to rotate, and wind power generated by rotation of the fan blades penetrates through a heating rod, enters a heat insulation ring column and enters an inner cavity of a lower clamping ring and an inner cavity of an upper clamping ring along the heat insulation ring column; air flow flows to the observation glass sheet through the multiple holes formed in the lower surface of the inner side of the upper clamping ring and the upper surface of the inner side of the lower clamping ring, water mist generated on the observation glass sheet is dried, and meanwhile the temperature inside and outside the observation glass sheet is kept consistent.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic water meters, in particular to a demisting device for ultrasonic water meters. Background Art

[0002] Ultrasonic water meter is a new type of water meter that detects the time difference caused by the change in speed when the ultrasonic sound beam propagates downstream and upstream in water, analyzes and processes the water flow rate, and further calculates the water flow rate.

[0003] The existing ultrasonic water meters will generate a certain amount of heat when the internal meter movement operates in cold weather. The observation glass on the ultrasonic water meter will produce fog due to the large temperature difference between the inside and the outside. The fog adheres to the observation glass, which can easily affect the staff's observation of the data displayed on the ultrasonic water meter. The observation glass on the existing ultrasonic water meters is mostly embedded in the top of the water meter, so the surface of the water meter is mostly concave. When dust and debris fall into the concave groove, it is difficult for the staff to clean the debris inside the groove. Over time, the accumulated dust and debris can easily erode and damage the surface of the water meter. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a defogger for an ultrasonic water meter to solve the problem that the existing ultrasonic water meter will generate a certain amount of heat when its internal meter movement operates in cold weather, and the observation glass on the ultrasonic water meter will produce fog due to the large temperature difference between the inside and the outside. The fog adheres to the observation glass, which can easily affect the staff's observation of the data displayed on the ultrasonic water meter. The observation glass on the existing ultrasonic water meter is mostly embedded in the top of the water meter, so the surface of the water meter is mostly concave. When dust and debris fall into the concave groove, it is difficult for the staff to clean the debris inside the groove. Over time, the accumulated dust and debris can easily erode and damage the water meter.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a defogger for an ultrasonic water meter, comprising a protective shell, a defogger mechanism is arranged on the inner side of the protective shell, the defogger mechanism comprises an upper clamping ring, the upper clamping ring is located at the top of the inner side of the protective shell, a plugging block is fixedly connected to the middle of the left and right ends of the bottom of the upper clamping ring and the middle of the front and rear sides, the bottom clamp of the upper clamping ring has a lower clamping ring, the plugging block is connected through the upper surface of the lower clamping ring, a support hoop column block is fixedly connected to the middle of the left and right ends of the lower surface of the lower clamping ring and the middle of the front and rear sides, a column cavity is opened inside the inner side of the support hoop column block, a heat insulation ring column is fixedly connected to the bottom of the support hoop column block, and the column cavity is connected to the lower clamping ring It is connected through the heat insulation ring column, and an air pipe is fixedly connected to the middle of the left and right ends of the bottom of the heat insulation ring column and the middle of the front and rear sides. An air circulation chamber is provided below the heat insulation ring column, and the air pipe is connected through the air circulation chamber. A fan blade is rotatably connected to the middle of the inner side of the air circulation chamber, and a motor is fixedly connected to the middle of the bottom end of the air circulation chamber. The bottom end of the fan blade passes through the middle of the air circulation chamber and is fixedly connected to the output end of the motor. A dust collection groove is provided on the inner side of the air circulation chamber at a position directly below the air pipe, and a heating rod is provided in the middle of the distance between the fan blade and the dust collection groove, and a plurality of holes are provided on the lower surface of the inner side of the upper clamp ring and on the upper surface of the inner side of the lower clamp ring.

[0006] By adopting the above technical solution, during defogger, the motor drives the fan blades fixedly connected to the output end to rotate, and the wind force generated by the rotation of the fan blades passes through the heating rod and enters the insulation ring column, and enters the inner cavity of the lower clamp ring and the upper clamp ring along the insulation ring column. The airflow flows to the observation glass through multiple holes on the lower surface of the inner side of the upper clamp ring and the upper surface of the inner side of the lower clamp ring, so that the temperature inside and outside the observation glass is kept constant, which is beneficial to prevent the surface of the observation glass from generating fog due to excessive temperature difference.

[0007] The present invention is further configured as follows: a blocking cover is detachably connected to the upper part of the outer side of the protective shell through a thread, a mounting clamp groove is provided on the upper surface of the blocking cover, the inner clamp of the mounting clamp groove has a protective cover, the left and right ends of the rear side of the protective cover are fixedly connected with an axle block, the left and right ends of the rear side of the mounting clamp groove are provided with an axle block slot, the protective cover is rotatably connected to the mounting clamp groove through the provided axle block and the axle block slot, and the inner clamp between the upper clamp ring and the lower clamp ring is provided with an observation glass piece.

[0008] By adopting the above technical solution, the surface of the water meter is protected by the sealing cover and the protective cover, which is beneficial to prevent the observation glass from being damaged by the impact of external force and is convenient for anti-freezing protection of the meter core provided in the middle of the inner side of the protective shell.

[0009] The present invention is further configured such that a watch movement is installed in the middle of the upper surface of the airflow circulation cavity, two conical grooves are provided at the left and right ends and the middle of the front and rear sides of the inner surface of the insulation ring column, a controller is provided on the outside of the motor, and the bottom of the controller is fixedly connected to the bottom of the inner side of the protective shell.

[0010] By adopting the above technical solution, the airflow can easily enter the watch movement through the conical groove, dissipate the heat generated by the operation of the internal parts of the watch movement, and the controller controls the start and stop of the motor.

[0011] The present invention is further configured such that a limiting block plate is fixedly connected to the middle of the inner side of the conical groove, a sealing valve block is slidably connected to the middle of the limiting block plate, and an auxiliary spring is provided on the outer side of the sealing valve block near the inner cavity of the insulation ring column.

[0012] By adopting the above technical solution, when the air flow flows from bottom to top through the conical groove, the air pressure generated by the air flow will push the sealing valve block to slide toward the inner side of the insulation ring column under the restriction of the limit block plate, and open the air hole blocked by the sealing valve block. At this time, the air flow will enter the inner side of the insulation ring column through the opened air hole to dissipate the heat of the watch core provided on the inner side of the insulation ring column. When the air flow flows through the conical groove, the sealing valve block loses the air pressure push, and slides in the opposite direction and resets under the drive of the auxiliary spring.

[0013] The present invention is further configured as follows: a supporting column rod is fixedly connected to the middle part of the bottom end of the protective shell, a self-inspection mechanism is provided in the middle part of the inner side of the supporting column rod, the self-inspection mechanism includes a pushing plate, the pushing plate is located at the bottom of the motor, a lifting and lowering limit cavity is opened in the inner wall of the inner bottom end of the protective shell, the pushing plate is located inside the lifting and lowering limit cavity and is slidably connected to the lifting and lowering limit cavity, a sliding rod is fixedly connected to the middle part of the bottom end of the pushing plate, a piston column block is fixedly connected to the bottom end of the sliding rod, a guide cavity is opened in the middle part of the inner side of the supporting column rod, and the piston column block is slidably connected to the guide cavity.

[0014] By adopting the above technical solution, when one end of the pipe connected to the main pipe body is blocked, the flowing water cannot flow quickly to one end, and the water pressure generated by the flowing water will push the piston column block to slide vertically upward under the guidance of the guide cavity. The upward sliding piston column block will drive the sliding rod fixedly connected to the middle of the top to slide upward, thereby driving the pushing plate fixedly connected to the top of the sliding rod to slide upward to push the pressure sensor provided on the top of the controller. When the pressure sensor senses that the pressure is too high, it will trigger the alarm inside the controller to remind the staff, so that the staff can repair and clean the connected pipes in time.

[0015] The present invention is further configured such that a support hoop column block is fixedly connected to the middle of the left and right ends of the inner side of the lifting limit cavity, a guide hole is opened at the connection between the pushing plate and the support hoop column block, the pushing plate is firmly slidably connected to the lifting limit cavity through the guide hole and the support hoop column block, the top of the pushing plate contacts the middle of the bottom end of the controller, and the bottom end of the support column rod is fixedly connected to the main pipe body.

[0016] By adopting the above technical solution, the upward and downward sliding trajectory of the pushing plate is limited and guided by the support hoop column block and the guide hole during the sliding process of the pushing plate.

[0017] In summary, the present invention mainly has the following beneficial effects: it is convenient to utilize the heat generated by the operation of the meter movement to defog the fog generated on the observation glass, it is convenient to automatically clean and collect the dust accumulated above the observation glass, and it is convenient to timely detect whether the pipe where the water meter is located is blocked.

[0018] 1. The present invention uses a defogger mechanism. When in use, the motor drives the fan blades at the output end to rotate. The wind force generated by the rotation of the fan blades passes through the heating rod and along the air pipe fixedly connected at one end of the top of the air circulation chamber into the inner cavity of the heat insulation ring column that passes through the top of the air pipe. When the air flow passes through the conical groove in the process of flowing from bottom to top, the air pressure generated by the air flow will push the sealing valve block to slide toward the inner side of the heat insulation ring column under the restriction of the limit block plate, so that the air hole opened on the limit block plate is opened during the sliding separation process of the sealing valve block, and the air flow enters the watch core through the air hole to drain the heat generated by the operation of the watch core. When the heat flows to the lower surface of the inner side of the lower clamping ring driven by the air flow, the air flow flowing from bottom to top on the inner side of the heat insulation ring column will pass through the supporting hoop column block fixed on the top of the heat insulation ring column and the column cavity opened therein to flow into the lower clamping ring, and After the airflows flowing in from the holes are combined, they flow into the upper clamping ring through the inner cavity of the lower clamping ring through the insert pipe block, and then flow into the outer surface of the observation glass through the hole opened on the lower surface of one end of the upper clamping ring, so as to dry the mist condensed on the surface of the observation glass. When cleaning the dust, the fan blades fixedly connected to the output end are driven by the motor to rotate in the opposite direction. The suction generated by the reverse rotation will drive the dust connected to the upper surface of the observation glass into the upper clamping ring through the hole opened on the lower surface of one end of the upper clamping ring, enter the lower clamping ring through the insert pipe block fixedly connected to the bottom of the upper clamping ring, enter the heat insulation ring column through the column cavity provided at the bottom of the lower clamping ring, and fall into the dust collection groove through the air supply pipe fixedly connected to the bottom of the heat insulation ring column, so as to utilize the heat generated by the operation of the watch movement to defog the mist generated on the observation glass, and facilitate the automatic cleaning and collection of dust accumulated above the observation glass.

[0019] 2. The present invention has a self-checking mechanism. When one end of the pipe connected to the main pipe body is blocked during use, the water pressure generated by the flowing water during the flow will push the piston column block. When the piston column block is pushed by the water pressure, it will slide upward along the guide cavity, thereby driving the pushing plate fixedly connected to the top of the slide rod through the slide rod fixedly connected to the middle part of the top of the piston column block to slide toward the top of the controller under the restriction of the support hoop column block and the guide hole. When the annular protrusion fixed at the outer edge of the upper surface of the pushing plate slides and is stuck on the controller provided at the bottom of the controller, when the pressure sensor senses that the pressure is too high, it will trigger the alarm on the inside of the controller, and the alarm will sound. The alarm will remind the staff, so as to timely detect whether the pipe where the water meter is located is blocked, and facilitate the staff to repair the blocked pipe in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a stereogram of the present invention;

[0021] Figure 2 It is a schematic diagram of a partial cross-sectional three-dimensional structure of the present invention;

[0022] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of the connection between the heat-insulating ring column and the airflow circulation cavity of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure of the middle A part:

[0024] Figure 5 It is a schematic diagram of a three-dimensional side cross-sectional structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional main cross-sectional structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of part B in the middle.

[0027] In the figure: 1. main body; 2. supporting column; 3. protective shell; 4. defogger; 41. blocking cover; 42. protective cover; 43. upper clamp ring; 44. inserting tube block; 45. lower clamp ring; 46. heat-insulating ring column; 47. air circulation chamber; 48. dust collecting tank; 49. heating rod; 410. controller; 411. motor; 412. fan blade; 413. air pipe; 414. conical groove; 415. limit block plate; 416. blocking valve block; 417. auxiliary spring; 418. mounting clamp groove; 5. watch core; 6. observation glass; 7. self-test mechanism; 71. pushing plate; 72. support hoop column block; 73. slide rod; 74. guide chamber; 75. piston column block. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] The following describes an embodiment of the present invention based on its overall structure.

[0030] A demisting device for an ultrasonic water meter, such as Figure 1-7As shown, it includes a protective shell 3, and a defogger mechanism 4 is provided on the inner side of the protective shell 3. The defogger mechanism 4 includes an upper clamping ring 43, and the upper clamping ring 43 is located at the top of the inner side of the protective shell 3. A plugging block 44 is fixedly connected to the middle of the left and right ends and the middle of the front and rear sides of the bottom of the upper clamping ring 43. The bottom clamp of the upper clamping ring 43 has a lower clamping ring 45, and the plugging block 44 is connected through the upper surface of the lower clamping ring 45. The middle of the left and right ends and the middle of the front and rear sides of the lower surface of the lower clamping ring 45 are fixedly connected to a support hoop column block, and a column cavity is opened inside the inner side of the support hoop column block. The bottom of the support hoop column block is fixedly connected to an insulating ring column 46, and the column cavity and the lower clamping ring The ring 45 is connected through the heat-insulating ring column 46. An air pipe 413 is fixedly connected to the middle of the left and right ends and the middle of the front and rear sides of the bottom of the heat-insulating ring column 46. An air circulation chamber 47 is provided below the heat-insulating ring column 46. The air pipe 413 is connected through the air circulation chamber 47. The middle of the inner side of the air circulation chamber 47 is rotatably connected with a fan blade 412. The middle of the bottom end of the air circulation chamber 47 is fixedly connected with a motor 411. The bottom end of the fan blade 412 passes through the middle of the air circulation chamber 47 and is fixedly connected to the output end of the motor 411. A dust collection groove 48 is provided on the inner side of the air circulation chamber 47 directly below the air pipe 413. A heating rod 49 is provided in the middle of the distance between the fan blade 412 and the dust collecting groove 48, a plurality of holes are provided on the lower surface of the inner side of the upper clamp ring 43 and the upper surface of the inner side of the lower clamp ring 45, a blocking cover 41 is detachably connected to the upper side of the outer side of the protective shell 3 through a thread, a mounting clamp groove 418 is provided on the upper surface of the blocking cover 41, a protective cover 42 is provided on the inner clamp of the mounting clamp groove 418, a shaft block is fixedly connected to the left and right ends of the rear side of the protective cover 42, a shaft block slot is provided on the left and right ends of the rear side of the mounting clamp groove 418, and the protective cover 42 is rotated with the mounting clamp groove 418 through the provided shaft block and the shaft block slot Dynamic connection, the inner clamp between the upper clamp ring 43 and the lower clamp ring 45 is provided with an observation glass piece 6, the middle part of the upper surface of the airflow circulation cavity 47 is installed with a watch movement 5, the left and right ends of the inner surface of the heat-insulating ring column 46 and the middle parts of the front and rear sides are provided with two conical grooves 414, the outer side of the motor 411 is provided with a controller 410, the bottom of the controller 410 is fixedly connected to the bottom of the inner side of the protective shell 3, the middle part of the inner side of the conical groove 414 is fixedly connected with a limit block plate 415, the middle part of the limit block plate 415 is slidably connected with a blocking valve block 416, and an auxiliary spring 417 is provided on the outer side of the blocking valve block 416 near the inner cavity of the heat-insulating ring column 46.

[0031] On the basis of the above structure, in this embodiment, when defogging, the motor 411 is started, and the motor 411 will drive the fan blades 412 fixedly connected to the output end to rotate. The wind force generated by the rotation of the fan blades 412 will enter the inside of the watch core 5 provided on the inner side of the heat-insulating ring column 46 through the heat dissipation holes opened in the middle of the upper surface of the airflow circulation cavity 47, and push the heat emitted by the watch core 5 upward. The airflow will drive the heat emitted by the watch core 5 to enter the inner cavity of the lower clamping ring 45 through the holes opened on the inner upper surface of the lower clamping ring 45, and flow along the plug block 44 clamped at one end of the top of the lower clamping ring 45 into the upper clamping ring 43. The airflow will flow through the holes opened on the inner lower surface of the upper clamping ring 43 to the observation glass sheet 6 clamped between the lower clamping ring 45 and the upper clamping ring 43, so that the temperatures of the upper and lower surfaces of the observation glass sheet 6 are kept constant, thereby drying the fog gathered on the observation glass sheet;

[0032] In addition, the wind force generated by the fan blades 412 can also pass through the heating rod 49 and enter the inner cavity of the heat-insulating ring column 46 that passes through the top of the air supply pipe 413 along the air supply pipe 413 fixedly connected at one end of the top of the air circulation chamber 47. When the air flow passes through the conical groove 414 in the process of flowing from bottom to top, the air pressure generated by the air flow will push the sealing valve block 416 to slide toward the inner side of the heat-insulating ring column 46 under the restriction of the limit block plate 415, so that the air hole opened on the limit block plate 415 is opened during the sliding separation process of the sealing valve block 416, and the air flow enters the watch core 5 through the air hole to operate the watch core 5 The generated heat is drained, and when the heat flows to the lower surface of the inner side of the lower clamp ring 45 driven by the air flow, the air flow flowing from the bottom to the top of the heat insulation ring column 46 will flow into the lower clamp ring 45 through the support hoop column block fixed on the top of the heat insulation ring column 46 and the column cavity opened therein, and after merging with the air flow flowing in from the hole opened on the inner lower surface of the lower clamp ring 45, it will flow into the upper clamp ring 43 along the inner cavity of the lower clamp ring 45 through the inserting tube block 44, and flow into the outer surface of the observation glass sheet 6 through the hole opened on the lower surface of one end of the upper clamp ring 43, so as to dry the mist condensed on the surface of the observation glass sheet 6;

[0033] The inner sides of the holes through which the air flows are all fixedly connected with dust-absorbing and breathable sponge filter layers.

[0034] During installation, the insulation ring column 46 is clamped into the top of the air flow circulation chamber 47, so that the bottom of the air supply pipe 413 fixedly connected to the bottom of the insulation ring column 46 is clamped into the top of the inner side of the air flow circulation chamber 47, the watch core 5 is clamped into the middle part of the inner side of the insulation ring column 46, and then the lower clamp ring 45 is clamped into the support hoop column block fixedly connected to the top of the insulation ring column 46, and then the observation glass piece 6 is clamped into the inner side of the lower clamp ring 45, and then the upper clamp ring 43 is clamped into the upper surface of the lower clamp ring 45, so that the insertion tube block 44 fixedly connected to the bottom of the upper clamp ring 43 is clamped into the inner side of the lower clamp ring 45, so that the upper clamp ring 43 is clamped and fixed to the upper surface of the lower clamp ring 45, so that the upper clamp ring 43 clamps the outer edge of the upper surface of the observation glass piece 6, and then the sealing cover 41 is rotated, and the sealing cover 41 will be screwed to the top of the protective shell 3 through threads.

[0035] When cleaning dust, the fan blade 412 fixedly connected to the output end is driven by the motor 411 to produce reverse rotation. The suction generated by the reverse rotation will draw the dust connected to the upper surface of the observation glass sheet 6 into the upper clamping ring 43 through the hole opened on the lower surface of one end of the upper clamping ring 43, and then enter the lower clamping ring 45 through the insert block 44 fixedly connected to the bottom of the upper clamping ring 43, and then enter the heat-insulating ring column 46 through the column cavity provided at the bottom of the lower clamping ring 45, and then fall into the dust collecting groove 48 through the air supply pipe 413 fixedly connected to the bottom of the heat-insulating ring column 46. When the dust enters the air circulation cavity 47, it is filtered by the filter ring net fixedly connected to the inner side of the top of the dust collecting groove 48 to prevent the dust from entering the inside of the watch movement and affecting the efficiency of the operation of the watch movement.

[0036] Among them, the middle part of the bottom end of the protective shell 3 is fixedly connected with the support column 2, and the middle part of the inner side of the support column 2 is provided with a self-inspection mechanism 7, which includes a pushing plate 71, and the pushing plate 71 is located at the bottom of the motor 411. A lifting limit cavity is opened in the inner wall of the inner bottom end of the protective shell 3, and the pushing plate 71 is located inside the lifting limit cavity and is slidably connected with the lifting limit cavity. A sliding rod 73 is fixedly connected to the middle part of the bottom end of the pushing plate 71, and a piston column block 75 is fixedly connected to the bottom end of the sliding rod 73. A guide cavity 74 is provided in the middle of the inner side of the support column rod 2, and the piston column block 75 is slidably connected to the guide cavity 74. A support hoop column block 72 is fixedly connected to the middle of the left and right ends of the inner side of the lifting limit cavity. A guide hole is provided at the connection between the pushing plate 71 and the support hoop column block 72. The pushing plate 71 is firmly slidably connected to the lifting limit cavity through the guide hole and the support hoop column block 72. The top of the pushing plate 71 contacts the middle of the bottom end of the controller 410, and the bottom end of the support column rod 2 is fixedly connected to the main pipe 1.

[0037] On the basis of the above structure, in this embodiment, when one end of the pipe connected to the main body 1 is blocked during use, the water pressure generated by the flowing water during the flow process will push the piston column block 75. When the piston column block 75 is pushed by the water pressure, it will slide upward along the guide cavity 74, thereby driving the pushing plate 71 fixedly connected to the top of the slide rod 73 through the slide rod 73 fixedly connected to the middle part of the top end of the piston column block 75 to slide toward the top of the controller 410 under the restriction of the support hoop column block 72 and the guide hole. When the annular protrusion fixed at the outer edge of the upper surface of the pushing plate 71 slides and is stuck on the controller 410 provided at the bottom of the controller 410, when the pressure sensor senses that the pressure is too high, it will trigger the alarm on the inside of the controller 410, and the alarm will sound. The alarm will remind the staff, so that the staff can repair the blocked pipe in time.

[0038] The present invention creatively guides the heat generated by the mechanical operation of the meter core to the inner and outer surfaces of the observation glass sheet provided on the water meter through the defogger mechanism, so that the temperature inside and outside the observation glass sheet is kept constant, thereby avoiding the formation of water mist on the surface of the observation glass sheet due to the large temperature difference between the inside and outside of the observation glass lens provided on the traditional water meter in cold weather, which affects the observation line of sight. In the prior art, the internal meter core operation of the ultrasonic water meter in cold weather will generate a certain amount of heat, and the observation glass sheet on the ultrasonic water meter will produce fog due to the large temperature difference between the inside and outside. The fog adheres to the observation glass, which can easily affect the staff's observation of the data displayed on the ultrasonic water meter. In this solution, the defogger mechanism is used, and when in use, the motor 411 drives the fan blades 412 at the output end to rotate, and the wind force generated by the rotation of the fan blades 412 passes through the heating rod 49 and enters the air pipe 413 fixedly connected to the top end of the air circulation chamber 47 into the heat-insulating ring column 46 connected to the top of the air pipe 413. In the inner cavity, when the airflow passes through the conical groove 414 during the process of flowing from bottom to top, the air pressure generated by the airflow will push the blocking valve block 416 to slide toward the inner side of the heat insulation ring column 46 under the restriction of the limit plate 415, so that the air hole opened on the limit plate 415 is opened during the sliding separation process of the blocking valve block 416, and the airflow enters the watch core 5 through the air hole to drain the heat generated by the operation of the watch core 5. When the heat flows to the lower surface of the inner side of the lower clamping ring 45 driven by the airflow, When the heat insulating ring column 46 is in a state of being moved upward from the bottom to the top, the airflow flowing from the inner side of the heat insulating ring column 46 will flow into the lower clamping ring 45 through the support hoop column block fixed on the top of the heat insulating ring column 46 and the column cavity opened inside the support hoop column block and flow into the lower clamping ring 45. After merging with the airflow flowing in from the hole opened on the inner lower surface of the lower clamping ring 45, the airflow will flow into the upper clamping ring 43 along the inner cavity of the lower clamping ring 45 through the insert tube block 44 and flow into the outer surface of the observation glass sheet 6 through the hole opened on the lower surface of one end of the upper clamping ring 43, thereby drying the mist condensed on the surface of the observation glass sheet 6.

[0039] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A demisting device for an ultrasonic water meter, comprising a protective housing (3), characterized in that: A defogger mechanism (4) is provided on the inner side of the protective shell (3), and the defogger mechanism (4) comprises an upper clamping ring (43), and the upper clamping ring (43) is located at the top of the inner side of the protective shell (3). A tube block (44) is fixedly connected to the middle of the left and right ends and the middle of the front and rear sides of the bottom of the upper clamping ring (43). The bottom clamp of the upper clamping ring (43) has a lower clamping ring (45). The tube block (44) is connected through the upper surface of the lower clamping ring (45). A support hoop column block is fixedly connected to the middle of the left and right ends and the middle of the front and rear sides of the lower surface of the lower clamping ring (45). A column cavity is provided inside the inner side of the support hoop column block. A heat insulation ring column (46) is fixedly connected to the bottom of the support hoop column block. The column cavity is connected through the lower clamping ring (45) and the heat insulation ring column (46). An air pipe (413) is fixedly connected to the middle of the left and right ends of the bottom and the middle of the front and rear sides; an air circulation chamber (47) is provided below the heat-insulating ring column (46); the air pipe (413) is connected through the air circulation chamber (47); a fan blade (412) is rotatably connected to the middle of the inner side of the air circulation chamber (47); a motor (411) is fixedly connected to the middle of the bottom end of the air circulation chamber (47); the bottom end of the fan blade (412) passes through the middle of the air circulation chamber (47) and is fixedly connected to the output end of the motor (411); a dust collection groove (48) is provided on the inner side of the air circulation chamber (47) at a position directly below the air pipe (413); a heating rod (49) is provided in the middle of the distance between the fan blade (412) and the dust collection groove (48).

2. The demisting device for an ultrasonic water meter according to claim 1, characterized in that: A sealing cover (41) is detachably connected to the upper part of the outer side of the protective shell (3) through a thread, and a mounting clamp groove (418) is provided on the upper surface of the sealing cover (41), and the inner clamp of the mounting clamp groove (418) has a protective cover (42), and the left and right ends of the rear side of the protective cover (42) are fixedly connected with an axle block, and the left and right ends of the rear side of the mounting clamp groove (418) are provided with an axle block slot, and the protective cover (42) is rotatably connected to the mounting clamp groove (418) through the provided axle block and the axle block slot, and the inner clamp between the upper clamp ring (43) and the lower clamp ring (45) has an observation glass sheet (6).

3. The demisting device for an ultrasonic water meter according to claim 1, characterized in that: A watch movement (5) is installed in the middle of the upper surface of the air circulation cavity (47), two conical grooves (414) are provided at the left and right ends and the middle of the front and rear sides of the inner surface of the heat insulation ring column (46), and a controller (410) is provided on the outside of the motor (411), and the bottom of the controller (410) is fixedly connected to the bottom of the inner side of the protective shell (3).

4. The demisting device for an ultrasonic water meter according to claim 3, characterized in that: A limit block plate (415) is fixedly connected to the middle of the inner side of the conical groove (414), a blocking valve block (416) is slidably connected to the middle of the limit block plate (415), and an auxiliary spring (417) is provided on the outer side of the blocking valve block (416) near the inner cavity of the heat insulation ring column (46).

5. The demisting device for an ultrasonic water meter according to claim 1, characterized in that: A support column (2) is fixedly connected to the middle of the bottom end of the protective shell (3), a self-inspection mechanism (7) is provided in the middle of the inner side of the support column (2), the self-inspection mechanism (7) comprises a pushing plate (71), the pushing plate (71) is located at the bottom of the motor (411), a lifting limit cavity is provided in the inner wall of the inner bottom end of the protective shell (3), the pushing plate (71) is located inside the lifting limit cavity and is slidably connected to the lifting limit cavity, a sliding rod (73) is fixedly connected to the middle of the bottom end of the pushing plate (71), a piston column block (75) is fixedly connected to the bottom end of the sliding rod (73), a guide cavity (74) is provided in the middle of the inner side of the support column (2), and the piston column block (75) is slidably connected to the guide cavity (74).

6. The demisting device for an ultrasonic water meter according to claim 5, characterized in that: A support column block (72) is fixedly connected to the middle of the left and right ends of the inner side of the lifting limit cavity, and a guide hole is provided at the connection between the pushing plate (71) and the support column block (72). The pushing plate (71) is firmly slidably connected to the lifting limit cavity through the guide hole and the support column block (72). The upper part of the pushing plate (71) contacts the middle part of the bottom end of the controller (410), and the bottom end of the support column rod (2) is fixedly connected to the main pipe body (1).

7. The demisting device for an ultrasonic water meter according to claim 1, characterized in that: A plurality of holes are provided on the lower surface of the inner side of the upper clamping ring (43) and the upper surface of the inner side of the lower clamping ring (45).

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