Self-wetting electronic soap film flowmeter

Abstract

The utility model relates to the technical field of soap film flow meters, in particular to a self-wetting electronic soap film flow meter which comprises an operation base, a soap film pipe and a photoelectric sensing device are arranged on the operation base, the lower portion of the soap film pipe is communicated with an air inlet short pipe and a soap liquid adjusting opening, and a valve switch is arranged on the air inlet short pipe. The liquid soap adjusting opening is communicated with a liquid storage device through a hose, the liquid storage device comprises a lifting table, a liquid storage groove is formed in the lifting table, and the bottom of the liquid storage groove is communicated with the hose; the liquid storage device with the lifting function is communicated with the bottom of the soap film pipe, the liquid storage device is lifted, the principle of communicating vessels is utilized, liquid soap rises from the bottom of the soap film pipe, the whole inner wall of the soap film is wetted, it is guaranteed that the thickness of a liquid film on the inner wall of the soap film pipe is consistent, measurement errors are effectively avoided while convenience and high efficiency are achieved, and the measurement precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soap film flowmeters, and more specifically to a self-wetting electronic soap film flowmeter. Background Art

[0002] The electronic soap film flowmeter is a commonly used calibration device for small flow test instruments. It is suitable for detecting any gas or liquid flow. Its principle is to use the upper and lower limit photoelectric sensors to calculate the time for the soap film to pass through, and automatically calculate the instantaneous flow rate based on the volume between the upper and lower limit sensors of the calibrated soap film tube.

[0003] The electronic soap film flowmeter needs to be wetted before use to ensure that the soap liquid adheres to the inner wall of the soap tube and reduce the resistance of the soap film during its rise. However, most existing lubrication methods use manual squeezing of a water bag filled with soap liquid under the soap film tube to allow the soap liquid to rise and lubricate the soap film tube, or directly add soap liquid from the top of the soap film tube for lubrication. The former is laborious and prone to produce a large number of bubbles, making it impossible to ensure complete lubrication of the tube arm; the latter is also prone to uneven thickness of the liquid film on the inner wall of the soap tube, resulting in a pulsed flow measurement value. The purpose of the utility model is to solve the shortcomings of the prior art and to propose a self-wetting electronic soap film flowmeter. Utility Model Content

[0004] In view of the above-mentioned defects and various deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a self-wetting electronic soap film flowmeter, which can conveniently and efficiently wet the soap film tube evenly, improve measurement accuracy and reduce measurement errors.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a self-wetting electronic soap film flowmeter, including an operating base, on which a soap film tube and a photoelectric sensor device are arranged, an air intake short pipe and a soap liquid regulating port are connected below the soap film tube, and a valve switch is arranged on the air intake short pipe; the soap liquid regulating port is connected to a liquid storage device through a hose, and the liquid storage device includes a lifting platform, on which a liquid storage tank is arranged, and the bottom of the liquid storage tank is connected to the hose.

[0006] Preferably, the lifting platform includes a lifting base plate, sliding guide rods are vertically arranged around the lifting base plate, the sliding guide rods slide through the lifting base plate, threaded through holes are symmetrically arranged around the lifting base plate, lifting screws are adapted to be arranged in the threaded through holes, and the lifting screws are rotated by a motor to control the lifting base plate to slide up and down on the sliding guide rods.

[0007] Preferably, a self-wetting portion is provided on the top of the soap film tube, and the self-wetting portion includes a liquid storage ring groove, the bottom of the liquid storage ring groove is connected to the inner wall of the soap film tube, absorbent cotton is provided in the liquid storage ring groove, a liquid storage ring groove is provided above the liquid storage ring groove, the inner side wall of the liquid storage ring groove is connected to the soap film tube by setting a liquid inlet, and through holes connected to the liquid storage ring groove are evenly provided on the bottom of the liquid storage ring groove.

[0008] Preferably, a sliding ring plate is slidably provided at the bottom of the liquid storage ring groove, the size of the sliding ring plate is the same as the size of the bottom of the liquid storage groove, a plurality of flow regulating openings are evenly arranged around the ring center of the sliding ring plate, the flow regulating openings gradually become larger along the circumference of the sliding ring plate, and a flow regulating ring plate is slidably provided at the top of the liquid storage ring groove, and the flow regulating ring plate is connected to the sliding ring plate.

[0009] Preferably, an adjustment paddle is vertically arranged above the flow regulating ring.

[0010] Preferably, the outlet position of the air inlet short pipe is higher than the air inlet position of the soap film tube.

[0011] The utility model is beneficial in that:

[0012] 1. The utility model provides a liquid storage device with a lifting function, which is connected to the bottom of the soap film tube. The liquid storage device is raised, and the principle of the communicating vessel is used to make the soap liquid rise from the bottom of the soap film tube to wet the entire inner wall of the soap film, thereby ensuring that the thickness of the liquid film on the inner wall of the soap film tube is consistent. This is convenient and efficient, and can also effectively avoid measurement errors and improve measurement accuracy.

[0013] 2. The utility model sets a self-wetting part on the top of the soap film tube. Through the liquid storage ring groove storing the mobile soap liquid and the liquid storage ring groove connected with the absorbent cotton, the inner wall of the soap tube can be slowly and evenly wetted within a certain period of time to form a continuous and coherent liquid flow, thereby generating a uniform liquid film, continuously keeping the inner wall of the soap film tube moistened, and effectively reducing the measurement error. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a front view of the utility model;

[0016] Figure 2 For the utility model Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 It is an isometric cross-sectional view of the self-wetting portion of the utility model;

[0018] Figure 4 It is a cross-sectional view of the liquid storage ring groove of the utility model;

[0019] Figure 5 It is a top view of the liquid storage ring groove of the utility model.

[0020] In the figure: 1-base; 2-soap film tube, 21-air inlet short pipe, 22-soap liquid regulating port, 23-valve switch, 24-hose; 3-photoelectric sensing device; 4-liquid storage device, 41-lifting platform, 411-lifting bottom plate, 412-sliding guide rod, 413-lifting screw, 414-motor, 42-liquid storage tank; 5-self-wetting part, 51-liquid storage ring groove, 511-through hole, 52-liquid storage ring groove, 521-liquid inlet, 522-sliding ring plate, 523-flow adjustment opening, 524-flow adjustment ring plate, 525-adjusting paddle. DETAILED DESCRIPTION

[0021] 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.

[0022] Embodiment 1:

[0023] See also Figure 1 A self-wetting electronic soap film flowmeter shown in the figure comprises an operating base 1, on which a soap film tube 2 and a photoelectric sensing device 3 are arranged, an air intake short pipe 21 and a soap liquid regulating port 22 are connected below the soap film tube 2, and a valve switch 23 is arranged on the air intake short pipe 21; the soap liquid regulating port 22 is connected to a liquid storage device 4 through a hose 24, and the liquid storage device 4 comprises a lifting platform 41, on which a liquid storage tank 42 is arranged, and the bottom of the liquid storage tank 42 is connected to the hose 24.

[0024] Specifically, the liquid storage device with a lifting function is connected to the bottom of the soap film tube. The liquid storage device is raised, and the principle of communicating vessels is utilized to make the soap liquid rise from the bottom of the soap film tube to wet the entire inner wall of the soap film, thereby ensuring that the thickness of the liquid film on the inner wall of the soap film tube is consistent. This is convenient and efficient, and can also effectively avoid measurement errors and improve measurement accuracy.

[0025] Furthermore, the lifting platform 41 includes a lifting base plate 411, and sliding guide rods 412 are vertically arranged around the lifting base plate 411. The sliding guide rods 412 slide through the lifting base plate 411. Threaded through holes 511 are symmetrically arranged around the lifting base plate 411. Lifting screws 413 are adapted to be arranged in the threaded through holes 511. The lifting screws 413 are rotated by a motor 414 to control the lifting base plate 411 to slide up and down on the sliding guide rods 412.

[0026] Specifically, when the device is required to perform measurement, it is only necessary to start the motor 414, and the lifting screw 413 rotates to make the liquid storage tank 42 rise. Due to the principle of communicating vessels, the soap liquid in the liquid storage tank 42 will enter the soap film tube 2 through the hose 24. The soap liquid in the soap film tube 2 rises from the lowest point, and after wetting the entire soap film tube 2, the liquid storage tank 42 descends. At this time, the height of the soap liquid in the soap film tube 2 can be controlled by controlling the height of the liquid storage tank 42, and the height of the soap liquid in the soap film tube 2 can be controlled to just exceed the interface between the air intake short pipe 21 and the soap film tube 2. At this time, the valve switch 23 is opened to perform a gas flow test, and soap bubbles begin to be generated in the soap film tube 2. At this time, the liquid storage tank 42 is controlled to continue to slowly descend. As the liquid level in the soap film tube 2 continues to decrease, the soap bubbles gradually grow and "peel off" from the soap liquid surface along the inner wall of the soap film tube, forming a "soap film" parallel to the liquid surface, which moves upward under the push of the gas, and then the measurement is performed.

[0027] Furthermore, in order to allow the soap liquid to flow back into the short intake pipe 21 during the soap film generation stage, the inlet position of the short intake pipe 21 is higher than the position connected with the soap film tube 2 .

[0028] Embodiment 2:

[0029] On the basis of Example 1, in order to achieve continuous wetting of the soap film tube 2 for a certain period of time, as Figures 2 to 5 As shown, a self-wetting portion 5 is provided on the top of the soap film tube 2, and the self-wetting portion 5 includes a liquid storage annular groove 51. The bottom of the liquid storage annular groove 51 is connected to the inner wall of the soap film tube 2. Water-absorbing cotton is provided in the liquid storage annular groove 51. A liquid storage annular groove 52 is provided above the liquid storage annular groove 51. The inner side wall of the liquid storage annular groove 52 is connected to the soap film tube 2 by setting a liquid inlet 521. The bottom of the liquid storage annular groove 52 is evenly provided with through holes 511 connected to the liquid storage annular groove 51.

[0030] Specifically, when the tube arm of the soap film tube 2 is moistened by lifting the liquid storage device 4, the soap liquid in the soap film tube 2 can be raised to the position of the liquid inlet 521, allowing the soap liquid to flow into the liquid storage annular groove 52 and accumulate a certain amount of soap liquid in the liquid storage annular groove 52. When the liquid storage device 4 descends and the soap liquid in the soap film tube 2 returns to the liquid storage annular groove 52, the soap liquid in the liquid storage annular groove 52 enters the liquid storage annular groove 51 from the through hole 511, and after being fully absorbed by the absorbent cotton therein, the excess soap liquid slowly flows from the liquid storage annular groove 51 into the soap film tube 2, continuously moistening the soap film tube from top to bottom.

[0031] Furthermore, a sliding ring piece 522 is slidably provided at the bottom of the liquid storage ring groove 52, and the size of the sliding ring piece 522 is the same as the size of the bottom of the liquid storage groove 42. A plurality of flow regulating openings 523 are evenly provided around the ring center of the sliding ring piece 522, and the flow regulating openings 523 gradually become larger along the circumference of the sliding ring piece 522. The distance between the flow regulating opening 523 and the ring center is the same as the distance from the through hole 511 to the ring center, and the largest part of the flow regulating opening 523 is the same size as the through hole 511. A flow regulating ring piece 524 is slidably provided at the top of the liquid storage ring groove 52, and the flow regulating ring piece 524 is fixedly connected to the sliding ring piece 522.

[0032] By rotating the flow regulating ring piece 524, the sliding of the sliding ring piece 522 is controlled, the size of the flow regulating opening through hole 511 is controlled, and the flow rate of the soap liquid in the liquid storage ring groove 52 into the liquid storage ring groove 51 is controlled, and the thickness of the soap liquid moistened on the inner wall of the soap film tube is adjusted to ensure the uniformity of the soap liquid thickness.

[0033] Furthermore, an adjustment paddle 525 is vertically arranged above the flow regulating ring piece 524. The operator can control the rotation of the flow regulating ring piece 524 by turning the adjustment paddle 525, and an indicator scale is arranged on the top of the self-wetting part 5, so that the operator can determine the size of the through hole 511, and then accurately control whether the self-wetting part 5 performs the wetting work and the wetting effect produced.

[0034] 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, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A self-wetting electronic soap film flowmeter, comprising an operating base (1), on which a soap film tube (2) and a photoelectric sensor device (3) are arranged, characterized in that: An air intake short pipe (21) and a soap liquid regulating port (22) are connected below the soap film tube (2), and a valve switch (23) is provided on the air intake short pipe (21); the soap liquid regulating port (22) is connected to a liquid storage device (4) through a hose (24), and the liquid storage device (4) comprises a lifting platform (41), and a liquid storage tank (42) is provided on the lifting platform (41), and the bottom of the liquid storage tank (42) is connected to the hose (24); the lifting platform (41) comprises a lifting bottom plate (41); 11), sliding guide rods (412) are vertically arranged around the lifting base plate (411), and the sliding guide rods (412) slide through the lifting base plate (411), and threaded through holes (511) are symmetrically arranged around the lifting base plate (411), and lifting screw rods (413) are adapted to be arranged in the threaded through holes (511), and the lifting screw rods (413) are rotated by a motor (414) to control the lifting base plate (411) to slide vertically on the sliding guide rods (412).

2. A self-wetting electronic soap film flowmeter according to claim 1, characterized in that: A self-wetting portion (5) is provided at the top of the soap film tube (2), the self-wetting portion (5) comprises a liquid storage annular groove (51), the bottom of the liquid storage annular groove (51) is connected to the inner wall of the soap film tube (2), water-absorbing cotton is provided in the liquid storage annular groove (51), a liquid storage annular groove (52) is provided above the liquid storage annular groove (51), the inner side wall of the liquid storage annular groove (52) is connected to the soap film tube (2) by providing a liquid inlet (521), and through holes (511) connected to the liquid storage annular groove (51) are evenly provided at the bottom of the liquid storage annular groove (52).

3. A self-wetting electronic soap film flowmeter according to claim 2, characterized in that: A sliding ring piece (522) is arranged at the bottom of the liquid storage ring groove (52), and the size of the sliding ring piece (522) is the same as that of the bottom of the liquid storage groove (42). A plurality of flow regulating openings (523) are evenly arranged around the center of the sliding ring piece (522), and the flow regulating openings (523) gradually become larger along the circumference of the sliding ring piece (522). A flow regulating ring piece (524) is slidably arranged at the top of the liquid storage ring groove (52), and the flow regulating ring piece (524) is fixedly connected to the sliding ring piece (522).

4. A self-wetting electronic soap film flowmeter according to claim 3, characterized in that: An adjusting paddle (525) is vertically arranged above the flow regulating ring piece (524).

5. A self-wetting electronic soap film flowmeter according to claim 1, characterized in that: The inlet position of the air intake short pipe (21) is higher than the position where it is connected to the soap film tube (2).

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