Device for detecting air tightness of water heater

Abstract

The utility model relates to the technical field of water heater production, in particular to a device for detecting the air tightness of a water heater. The height adjusting device comprises a base, a pair of symmetrically arranged height adjusting assemblies are installed at the top of the base in a spaced mode, a detection assembly is arranged between the two height adjusting assemblies, a driving assembly is arranged on the side, away from the other height adjusting assembly, of each height adjusting assembly, and the driving assemblies are used for driving the height adjusting assemblies. The height of the to-be-detected water heater placed in the detection assembly is adjusted, and the air tightness of the water heater is detected through the detection assembly; according to the device for detecting the air tightness of the water heater, the driving assembly is used for driving the height adjusting assembly, the height of the placement seat is adjusted according to the diameter of the water heater to be detected, then the air tightness of the water heater is detected through the detection assembly, and the visual effect generated when the water heater leaks is amplified through detection liquid.

Description

Technical Field

[0001] The utility model relates to the technical field of water heater production, in particular to a device for detecting the air tightness of a water heater. Background Art

[0002] Among water heaters, blast-type gas water heaters are widely used in life, and their internal combustion chamber is positive pressure. The three major parts of the blast-type gas water heater, the smoke hood, the heat exchanger and the combustion chamber, require high sealing after assembly to avoid smoke leakage after combustion and harm to the human body. At present, there is no better detection method on the production line to detect whether the air tightness of the three major parts of the smoke hood, the heat exchanger and the combustion chamber after assembly is qualified. It is necessary to use a reliable device to test before going online to ensure that the air tightness of the water heater is qualified before leaving the factory.

[0003] There are many existing technologies for water heater air tightness detection devices, such as:

[0004] Chinese patent announcement number CN210108640U discloses a water heater air tightness detection device, which includes an air pump that can provide compressed air, a first pressure gauge, a second pressure gauge and a gas flow meter. The air pump is connected to the air inlet of the water heater combustion chamber through an air inlet pipeline. The gas flow meter and the first pressure gauge are installed on the air inlet pipeline, and the second pressure gauge is installed at the air outlet of the water heater smoke hood. The water heater air tightness detection device provided by the utility model is simple to operate, and the detection result is intuitive and measurable. Air is continuously introduced into the water heater, and the air pressure regulating valve is adjusted to stabilize the first pressure gauge at a specified value. Then, the values ​​of the second pressure gauge and the gas flow meter are observed to be within the specified range, so as to judge whether the air tightness of the water heater smoke hood, the heat exchanger and the combustion chamber after assembly is qualified.

[0005] Existing water heaters are generally tested for air tightness by air pressure detectors, but air pressure detectors are mostly used by water heater manufacturers to sample water heaters before they leave the factory. On the one hand, the operation of air pressure detectors is relatively complicated and requires professional pre-job training before use. On the other hand, the price of the entire set of detectors is expensive, which increases the cost. For maintenance workers who are inspecting water heaters, air pressure detectors are difficult to use. For example, the water heater air tightness detection device proposed in the above patent uses an air pump to ventilate the water heater, and then observes the pressure gauge reading to determine whether the water heater is airtight.

[0006] In view of this, we propose a device for detecting the air tightness of a water heater to improve the deficiencies of the prior art. Utility Model Content

[0007] The purpose of the utility model is to provide a device for detecting the air tightness of a water heater to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides a device for detecting the air tightness of a water heater, comprising a base, a pair of symmetrically arranged height adjustment components are installed at intervals on the top of the base, a detection component is provided between the two height adjustment components, and a driving component is provided on the side of the height adjustment component away from the other height adjustment component. The driving component is used to drive the height adjustment component to adjust the height of the water heater to be detected placed between the detection components, and the air tightness of the water heater is detected by the detection component.

[0009] As a further improvement of the technical solution, the driving assembly includes a worm, a servo motor is provided at one end of the worm, the worm and the output shaft of the servo motor are coaxially connected, and a worm wheel is meshed on one side of the worm.

[0010] As a further improvement of the technical solution, the height adjustment component includes a threaded rod coaxially connected to the top of the worm, and a screw shift seat is threadedly connected to one side of the threaded rod close to the other height adjustment component.

[0011] As a further improvement of the present technical solution, the detection assembly includes a placement seat fixedly connected to the screw displacement seat and a detection groove opened on the top of the base, the detection groove is located between the two placement seats, and a card slot is opened on the side of the placement seat away from the screw displacement seat.

[0012] As a further improvement of the technical solution, a detection liquid is provided in the detection tank, and an inner wall of the detection tank is coated with a water-based paint.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the device for detecting the air tightness of the water heater, a driving component is provided to drive the height adjustment component, and the height of the placement seat is adjusted according to the diameter of the water heater to be detected. The air tightness of the water heater is then detected by the detection component, and the visual effect produced when the water heater leaks is amplified by the detection liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 It is a cutaway diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 3 This is a structural diagram of a driving component and a height adjustment component of an embodiment of the utility model;

[0018] Figure 4 This is a structural diagram of the detection component of an embodiment of the utility model.

[0019] The meaning of each number in the figure is:

[0020] 10. Base;

[0021] 20. driving assembly; 21. worm; 22. servo motor; 23. worm gear;

[0022] 30. Height adjustment assembly; 31. Threaded rod; 32. Screw-shift seat;

[0023] 40. Detection component; 41. Placement seat; 42. Detection slot; 43. Card slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example

[0026] See also Figure 1-Figure 4 As shown, this embodiment provides a device for detecting the air tightness of a water heater, including a base 10, a pair of symmetrically arranged height adjusting components 30 are installed at intervals on the top of the base 10, a detection component 40 is provided between the two height adjusting components 30, and the height adjusting component 30 is provided with a driving component 20 on the side away from the other height adjusting component 30, the driving component 20 is used to drive the height adjusting component 30, adjust the height of the water heater to be detected placed between the detection components 40, and detect the air tightness of the water heater through the detection component 40.

[0027] Working principle: When the device for detecting the air tightness of a water heater provided by the utility model is used, the driving component 20 is used to drive the height adjustment component 30, and the height of the placement seat 41 is adjusted according to the diameter of the water heater to be detected. The air tightness of the water heater is then detected by the detection component 40, and the visual effect produced when the water heater leaks is amplified by the detection liquid.

[0028] In order to drive the height adjustment component 30, the driving component 20 includes a worm 21, a servo motor 22 is provided at one end of the worm 21, the worm 21 and the output shaft of the servo motor 22 are coaxially connected, and a worm wheel 23 is meshed with one side of the worm 21; after the power is turned on, the servo motor 22 drives the worm 21 coaxially connected to its own output shaft to rotate, and the worm 21 drives the worm wheel 23 meshed with itself to rotate, thereby providing driving force for the height adjustment component 30. The driving component 20 has the advantages of good transmission stability, low noise and high reliability, and is suitable for occasions with high load and low speed output.

[0029] Taking into account the need to adjust the height of the placement seat 41 according to the diameter of the water heater to be tested, the height adjustment component 30 includes a threaded rod 31 coaxially connected to the top of the worm gear 21, and the threaded rod 31 is threadedly connected to a screw seat 32 on one side close to the other height adjustment component 30; driven by the worm gear 23, the threaded rod 31 rotates forward and reversely with the worm gear 23, driving the screw seat 32 to move up and down along the threaded rod 31, thereby adjusting the distance between the placement seat 41 and the base 10.

[0030] In order to detect the air tightness of the water heater, the detection component 40 includes a placement seat 41 fixedly connected to the screw seat 32 and a detection groove 42 opened on the top of the base 10, the detection groove 42 is located between the two placement seats 41, and a card slot 43 is opened on the side of the placement seat 41 away from the screw seat 32; a detection liquid is provided in the detection groove 42, and the inner wall of the detection groove 42 is coated with water-based paint; the gas-filled water heater is placed between the two card slots 43, and the height adjustment component 30 is adjusted to immerse the hot water tank in the detection liquid. Water is used as the detection liquid, and light gray latex paint is used as the water-based paint. The water heater is continuously rotated, and whether bubbles emerge in the water is observed to determine whether the air tightness of the water heater is intact. The light gray latex paint provides a high-contrast background for the detection liquid, which can make the bubbles conspicuous when the bubbles are small.

[0031] When the device for detecting the air tightness of a water heater provided in the utility model is used, the drive assembly 20 is used to drive the height adjustment assembly 30. Specifically, after the power is turned on, the servo motor 22 drives the worm 21 coaxially connected to its own output shaft to rotate, and the worm 21 drives the worm wheel 23 meshing with itself to rotate, so as to pass the driving force for the height adjustment assembly 30. The drive assembly 20 has the advantages of good transmission stability, low noise and high reliability, and is suitable for high-load and low-speed output occasions; the height of the placement seat 41 is adjusted according to the diameter of the water heater to be detected. Specifically, under the drive of the worm wheel 23, the threaded rod 31 rotates forward and reversely with the worm wheel 23, driving the screw seat 32 Move up and down along the threaded rod 31 to adjust the distance between the placement seat 41 and the base 10; then use the detection component 40 to detect the air tightness of the water heater, and use the detection liquid to amplify the visual effect produced when the water heater leaks. Specifically, place the gas-filled water heater between the two slots 43, and immerse the hot water tank in the detection liquid by adjusting the height adjustment component 30. Water is used as the detection liquid, and light gray latex paint is used as the water-based paint. Keep turning the water heater, and judge whether the air tightness of the water heater is intact by observing whether there are bubbles in the water. The light gray latex paint provides a high-contrast background for the detection liquid, which can make the bubbles conspicuous when the bubbles are small.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A device for detecting the air tightness of a water heater, characterized in that: The invention comprises a base (10), a pair of symmetrically arranged height adjustment components (30) are installed at intervals on the top of the base (10), a detection component (40) is arranged between the two height adjustment components (30), and a driving component (20) is arranged on the side of the height adjustment component (30) away from the other height adjustment component (30), the driving component (20) is used to drive the height adjustment component (30) to adjust the height of a water heater to be detected placed between the detection components (40), and the air tightness of the water heater is detected by the detection component (40).

2. The device for detecting the air tightness of a water heater according to claim 1, characterized in that: The driving assembly (20) comprises a worm (21), one end of the worm (21) is provided with a servo motor (22), the worm (21) and the output shaft of the servo motor (22) are coaxially connected, and one side of the worm (21) is meshed with a worm wheel (23).

3. The device for detecting the air tightness of a water heater according to claim 2, characterized in that: The height adjustment component (30) comprises a threaded rod (31) coaxially connected to the top of the worm (21), and a screw displacement seat (32) is threadedly connected to one side of the threaded rod (31) close to the other height adjustment component (30).

4. The device for detecting the air tightness of a water heater according to claim 3, characterized in that: The detection assembly (40) comprises a placement seat (41) fixedly connected to the screw displacement seat (32) and a detection slot (42) opened on the top of the base (10); the detection slot (42) is located between the two placement seats (41); and a clamping slot (43) is opened on a side of the placement seat (41) away from the screw displacement seat (32).

5. The device for detecting the air tightness of a water heater according to claim 4, characterized in that: The detection tank (42) is provided with detection liquid, and the inner wall of the detection tank (42) is coated with water-based paint.

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