A tool for detecting a blowtorch
By designing a tooling device that includes an air inlet valve, an air inlet switch, a flow meter, and an air guide pipe, the problem of air leakage detection of the one-way valve of the blowpipe was solved, and a simple and low-cost air leakage judgment was achieved.
Patent Information
- Application Number
- CN202521956511.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-08-04
- Estimated Expiration
- 2035-09-11
AI Technical Summary
Existing blowpipes may have one-way valves that leak air, which is difficult to detect using simple and low-cost methods.
Design a tooling device including an air inlet valve, an air inlet switch, a flow meter, and an air guide pipe. Air is supplied to the blowpipe via an external air pump and flows in the reverse direction through a one-way valve. The flow meter is used to observe the changes in the flow rate to determine the air leakage.
It achieves simple and low-cost air leakage detection, and determines whether there is air leakage in the one-way valve by observing changes in the flow count value, thus ensuring the quality of the blowpipe.
Smart Images
Figure CN224594125U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fire-blowing stick testing technology, and more specifically, relates to a tooling for testing fire-blowing sticks. Background Technology
[0002] A fire starter is a product used for outdoor fire-starting assistance. It generally includes a tube, a handle, and a one-way valve installed inside the handle. The one-way valve opens the airflow channel on the side of the handle facing the tube. The user blows air into the handle to create a stable airflow for lighting firewood and starting a fire. However, the installed one-way valve may leak. Therefore, a tooling is needed to detect whether the one-way valve of the fire starter is leaking. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a tooling for testing a blowpipe. It can determine whether there is air leakage in the one-way valve inside the blowpipe by observing the change in the flow meter value. The testing operation is simple and the device cost is low.
[0004] This utility model discloses a tooling for testing a blowpipe, which includes an air inlet valve, an air inlet switch, a flow meter, a base plate, and an air guide pipe. The air inlet valve, air inlet switch, blowpipe, and flow meter are sequentially arranged on the upper side of the base plate and connected in sequence through the air guide pipe. A one-way valve is provided inside the blowpipe, with the air inlet of the one-way valve facing the side closer to the flow meter and the air outlet facing the side closer to the air inlet switch. The airflow passes through the air inlet valve, air inlet switch, blowpipe, and flow meter in sequence, and flows in the opposite direction through the one-way valve.
[0005] As a further improvement of this utility model, the air guide tube includes a first air guide tube; the air inlet of the air inlet valve is connected to an external air pump, and the air outlet of the air inlet valve is connected to the air inlet of the air inlet switch through the first air guide tube.
[0006] As a further improvement of this utility model, the air guide tube includes a second air guide tube; the air outlet of the air inlet switch is connected to one end of the second air guide tube, and the other end of the second air guide tube is connected to one end of the blowpipe.
[0007] As a further improvement of this utility model, the air guide tube includes a third air guide tube; one end of the third air guide tube is connected to the end of the blowpipe near the flow meter, and the other end of the third air guide tube is connected to the flow meter.
[0008] As a further improvement of this utility model, the flow meter also includes a mounting plate, which is fixedly disposed on the lower side of the flow meter. Threaded holes are symmetrically opened on the left and right sides of the mounting plate, and screws are used to connect the mounting plate to the base plate through the threaded holes to fix the flow meter in place.
[0009] As a further improvement of this utility model, the fire blower includes a tube and a handle. The tube is the head of the fire blower, and the handle is the tail of the fire blower. The tube and the handle are connected end to end. Both the tube and the handle are hollow structures, and their interiors are interconnected to form a gas flow channel.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up an air inlet valve, air inlet switch, flow meter, base plate and air guide pipe, an external air pump sequentially supplies air to the air inlet valve, air inlet switch, blowpipe and flow meter through the air guide pipe, and the air flows in reverse through the one-way valve of the blowpipe. When there is an air leak in the one-way valve, the air can be detected by observing the change in the flow meter value. The detection operation is simple and the device cost is low. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the connection between the air intake switch and the blowpipe tube of this utility model; Figure 3 This is a schematic diagram showing the connection between the flow meter and the handle of the blowpipe of this utility model; Figure 4 This is a schematic diagram of the structure of the fire blower of this utility model.
[0012] Explanation of the labels in the diagram: 1. Inlet valve; 2. Inlet switch; 3. Flow meter; 31. Mounting plate; 32. Threaded hole; 4. Base plate; 5. Flame stick; 51. Tube body; 52. Handle; 6. Air guide tube; 61. First air guide tube; 62. Second air guide tube; 63. Third air guide tube. Detailed Implementation
[0013] Specific Implementation Example 1: Please refer to Figures 1-4 A tooling for testing a blowpipe includes an air inlet valve 1, an air inlet switch 2, a flow meter 3, a base plate 4, and an air guide pipe 6. In this embodiment, the test piece is a blowpipe 5, which includes a tube body 51 and a handle 52. The tube body 51 is the head of the blowpipe 5, and the handle 52 is the tail of the blowpipe 5. The tube body 51 and the handle 52 are connected end to end. Both the tube body 51 and the handle 52 are hollow structures, and their interiors are interconnected to form a gas flow channel.
[0014] A one-way valve is installed in the handle 52. The air inlet of the one-way valve faces the side of the handle 52 (i.e. the side closer to the flow meter 3), and the air outlet faces the side of the pipe body 51 (i.e. the side closer to the air inlet switch 2), so that the airflow flows unidirectionally from the tail to the head of the blow stick 5.
[0015] An air intake valve 1, an air intake switch 2, a blowpipe 5, and a flow meter 3 are arranged sequentially from left to right on the upper side of the base plate 4 and are interconnected via an air guide pipe 6. In this embodiment, the air guide pipe 6 includes a first air guide pipe 61, a second air guide pipe 62, and a third air guide pipe 63. The air intake valve 1 is a conventional air intake valve. The air inlet of the air intake valve 1 is connected to an external air pump, and the air outlet of the air intake valve 1 is connected to the air inlet of the air intake switch 2 via the first air guide pipe 61 to control the airflow rate.
[0016] The air intake switch 2 is a conventional air valve switch, which controls the flow of air. The air outlet of the air intake switch 2 is connected to one end of the second air guide pipe 62, and the other end of the second air guide pipe 62 is connected to the end of the pipe body 51 away from the handle 52. The handle 52 is connected to the flow meter 3 through the third air guide pipe 63.
[0017] The flow meter 3 is a conventional flow meter. The flow meter 3 also includes a mounting plate 31, which is fixedly installed on the lower side of the flow meter 3. The mounting plate 31 has threaded holes 32 symmetrically opened on the left and right sides. Screws are used to connect the mounting plate 31 to the base plate 4 (not shown in the figure) through the threaded holes 32 to fix the flow meter 3.
[0018] It should be noted that in this embodiment, the intake valve 1, intake switch 2, and flow meter 3 are all existing conventional devices, and their specific structures and working principles will not be described in detail here.
[0019] Working principle: Air inlet valve 1 introduces airflow through an external air pump. Air inlet valve 1 can control the airflow speed. The airflow passes through the first air guide pipe 61 and then through the air inlet switch 2. The air inlet switch 2 can control the airflow flow. The airflow then enters from the tube body 51 of the blowpipe 5 through the second air guide pipe 62, flows to the handle 52, and flows in reverse through the one-way valve of the blowpipe 5. When there is a leakage in the one-way valve, the leaked air enters the flow meter 3. If the reading of the flow meter 3 changes beyond the reasonable range, the inspector will judge that the blowpipe 5 has a leakage problem. Otherwise, it means that the blowpipe 5 is of qualified quality.
Claims
1. A fixture for detecting a blowpipe, characterized in that: It includes an air inlet valve (1), an air inlet switch (2), a flow meter (3), a base plate (4), and an air guide pipe (6); the air inlet valve (1), the air inlet switch (2), the blowpipe (5), and the flow meter (3) are arranged sequentially on the upper side of the base plate (4) and connected in sequence through the air guide pipe (6); a one-way valve is provided inside the blowpipe (5), with the air inlet of the one-way valve facing the side closer to the flow meter (3) and the air outlet facing the side closer to the air inlet switch (2); the airflow passes through the air inlet valve (1), the air inlet switch (2), the blowpipe (5), and the flow meter (3) in sequence, and flows in the opposite direction through the one-way valve.
2. The fixture for detecting a blowpipe according to claim 1, characterized in that: The air guide pipe (6) includes a first air guide pipe (61); the air inlet of the air inlet valve (1) is connected to an external air pump, and the air outlet of the air inlet valve (1) is connected to the air inlet of the air inlet switch (2) through the first air guide pipe (61).
3. The fixture for detecting a blowpipe according to claim 1, characterized in that: The air duct (6) includes a second air duct (62); the air outlet of the air inlet switch (2) is connected to one end of the second air duct (62), and the other end of the second air duct (62) is connected to one end of the blowpipe (5).
4. The fixture for detecting a blowpipe according to claim 1, characterized in that: The air guide tube (6) includes a third air guide tube (63); one end of the third air guide tube (63) is connected to the end of the blow stick (5) near the flow meter (3), and the other end of the third air guide tube (63) is connected to the flow meter (3).
5. The fixture for detecting a blowpipe according to claim 1, characterized in that: The flow meter (3) also includes a mounting plate (31), which is fixedly installed on the lower side of the flow meter (3). Threaded holes (32) are symmetrically opened on the left and right sides of the mounting plate (31). Screws are used to connect the mounting plate (31) to the base plate (4) through the threaded holes (32) to fix the flow meter (3).
6. The fixture for detecting a blowpipe according to claim 1, characterized in that: The fire blower (5) includes a tube (51) and a handle (52). The tube (51) is the head of the fire blower (5), and the handle (52) is the tail of the fire blower (5). The tube (51) and the handle (52) are connected end to end. Both the tube (51) and the handle (52) are hollow structures. The tube (51) and the handle (52) are interconnected to form a gas flow channel.