Sand hole detection device for producing embedded patch type drip irrigation tape

Abstract

The utility model discloses a sand hole detection device for producing an embedded patch type drip irrigation tape, which comprises a negative pressure box, a traction channel arranged in the middle of the negative pressure box, a sealing seat arranged at the top of the negative pressure box, an exhaust transparent hose connected to the top of the sealing seat, a hose connected to one end of the exhaust transparent hose, and an ultrasonic air detector arranged at the bottom of the hose. When the drip irrigation tape PE hose passes through the negative pressure box, the water pressure in the negative pressure box extrudes the drip irrigation tape PE hose, so that the pressure at the sand holes in the surface of the drip irrigation tape PE hose is suddenly reduced, bubbles continuously emerge from the sand holes due to the pressure difference between the inside and the outside of the drip irrigation tape PE hose, and the bubbles are discharged into the hose through the exhaust transparent hose. Therefore, the ultrasonic air detector and the ultrasonic detection host can timely detect bubbles discharged into the exhaust transparent hose through the ultrasonic air detector and give an alarm signal, so that workers can timely stop the machine for inspection, and the rejection rate of the drip irrigation tape is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sand hole detection of drip irrigation belts, and particularly relates to a sand hole detection device for producing internally embedded patch-type drip irrigation belts. Background Art

[0002] When cultivating crops in the field, an inner-patch drip irrigation belt is set up to ensure the stable growth of crops in the field. The crops are drip-irrigated through the drip irrigation belt to avoid drought. The inner-patch drip irrigation belt needs to be tested for sand holes during production to prevent water leakage caused by sand holes during use.

[0003] Currently, when inspecting the sand holes in the drip irrigation tape, the drip irrigation tape PE hose is generally extruded through an extruder and then enters a cooling water tank. There is a sand hole detector in the middle of the cooling water tank. The drip irrigation tape PE hose is pulled through the sand hole detector. The water pressure in the sand hole detector will squeeze the drip irrigation tape PE hose. When the drip irrigation tape PE hose has production defects or sand holes, the air in the drip irrigation tape PE hose will be squeezed out when the water pressure squeezes the drip irrigation tape PE hose, thereby forming a series of air bubbles in the sand hole detector, so that humans can judge whether there are sand holes in the drip irrigation tape PE hose by observing the air bubbles. However, long-term manual observation requires workers to maintain a high degree of concentration and needs to inspect a large number of drip irrigation tapes. Workers are prone to fatigue, which further reduces the accuracy and efficiency of the inspection. Utility Model Content

[0004] The purpose of the utility model is to provide a sand hole detection device for producing an inner-embedded patch-type drip irrigation belt to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a sand hole detection device for producing an internally embedded patch-type drip irrigation tape, comprising:

[0006] A negative pressure box is provided with a traction channel in the middle of the negative pressure box for pulling the drip irrigation belt PE hose for movement. A sealing seat is provided on the top of the negative pressure box and an exhaust transparent hose for exhaust is connected to the top of the sealing seat. One end of the exhaust transparent hose is connected to a hose and an ultrasonic air detector is provided at the bottom of the hose. The bubbles in the exhaust transparent hose are detected by the ultrasonic air detector, and an alarm signal is issued to remind workers to stop the machine and check in time.

[0007] Preferably, a placement groove is provided at the center of the top of the ultrasonic air detector, and the hose is arranged in the placement groove.

[0008] Preferably, a fixing plate is provided at the bottom of the ultrasonic air detector and mounting holes are provided at the four corners of the surface of the fixing plate.

[0009] Preferably, the negative pressure box is made of stainless steel.

[0010] Preferably, the negative pressure box is in a three-dimensional prismatic shape.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the drip irrigation belt PE hose will pass through the traction channel of the negative pressure box under the action of external traction, and when the drip irrigation belt PE hose with sand holes passes through the negative pressure box, the water pressure in the negative pressure box will squeeze the drip irrigation belt PE hose, so that the pressure at the sand holes on the surface of the drip irrigation belt PE hose will suddenly drop, and due to the pressure difference between the inside and outside of the drip irrigation belt PE hose, bubbles will continue to emerge at the sand holes. When the drip irrigation belt PE hose is pulled through the exhaust port, a series of bubbles will be discharged into the exhaust transparent hose and discharged into the hose through the exhaust transparent hose, thereby passing through the ultrasonic air detector. The ultrasonic detection host can timely detect the bubbles discharged into the hose from the exhaust transparent hose and make an alarm signal, so that workers can stop the machine for inspection in time, thereby reducing the scrap rate of the drip irrigation belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of the negative pressure box of the present utility model;

[0013] Figure 2 This is a schematic structural diagram of the ultrasonic air detector of the present utility model.

[0014] In the figure: 1. Negative pressure box; 2. Traction channel; 3. Sealing seat; 4. Exhaust transparent hose; 5. Hose; 6. Ultrasonic air detector; 7. Placement slot; 8. Fixing plate; 9. Mounting hole. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] The utility model provides Figure 1-2 The sand hole detection device for producing an internally embedded patch type drip irrigation belt shown in the figure comprises:

[0017] A negative pressure box 1 is provided with a traction channel 2 in the middle of the negative pressure box 1 for pulling the drip irrigation belt PE hose for movement. A sealing seat 3 is provided on the top of the negative pressure box 1 and an exhaust transparent hose 4 for exhaust is connected to the top of the sealing seat 3. One end of the exhaust transparent hose 4 is connected to a hose 5 and an ultrasonic air detector 6 is provided at the bottom of the hose 5. The ultrasonic air detector 6 detects bubbles in the exhaust transparent hose 4 and sends an alarm signal to remind workers to stop the machine for inspection in time.

[0018] A placement slot 7 is provided at the center of the top of the ultrasonic air detector 6 , and the hose 5 is arranged in the placement slot 7 .

[0019] The ultrasonic air detector 6 is provided with a fixing plate 8 at the bottom and mounting holes 9 are provided at the four corners of the surface of the fixing plate 8. The ultrasonic air detector 6 can be installed on the production line of the drip irrigation tape PE hose through the mounting holes 9 on the surface of the fixing plate 8, and the drip irrigation tape PE hose can be tested for sand holes while the drip irrigation tape PE hose is being produced.

[0020] The negative pressure box 1 is made of stainless steel, which provides good durability and corrosion resistance.

[0021] The negative pressure box 1 is in a three-dimensional prismatic shape.

[0022] The sand hole detection device for producing an internally embedded patch-type drip irrigation tape is as follows: the drip irrigation tape PE hose passes through the traction channel 2 of the negative pressure box 1 under the action of external traction. When the drip irrigation tape PE hose with sand holes passes through the negative pressure box 1, the water pressure in the negative pressure box 1 squeezes the drip irrigation tape PE hose, causing the pressure at the sand holes on the surface of the drip irrigation tape PE hose to drop suddenly. Due to the pressure difference between the inside and outside of the drip irrigation tape PE hose, bubbles will continuously emerge from the sand holes. When the drip irrigation tape PE hose is pulled through the exhaust port, a series of bubbles will flow to the top and be discharged into the exhaust transparent hose 4. Since the exhaust transparent hose 4 is connected to the hose 5, the bubbles can be discharged into the hose 5 through the exhaust transparent hose 4, thereby transmitting the ultrasonic wave emitted by the ultrasonic air detector 6 in the liquid in the hose 5. Part of the energy of the ultrasonic wave will be absorbed by the liquid. When the ultrasonic wave encounters the bubble, the absorption of the ultrasonic wave by the bubble will cause the signal to attenuate. Therefore, the change in the strength of the signal will trigger the ultrasonic detector to send an alarm signal, thereby reminding the worker and allowing the worker to stop the machine for inspection in time, thereby reducing the scrap rate of the drip irrigation tape.

[0023] The negative pressure box 1 and the ultrasonic air detector 6 can be installed on an automated production line to achieve fully automated testing, reduce the labor intensity and time cost of manual testing, quickly and accurately screen out unqualified products, and improve the overall efficiency of the production line.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sand hole detection device for producing an internally embedded patch type drip irrigation tape, characterized in that: include: A negative pressure box (1) is provided in the middle of the negative pressure box (1) with a traction channel (2) for traction of a drip irrigation belt PE hose for movement, a sealing seat (3) is provided on the top of the negative pressure box (1), and an exhaust transparent hose (4) for exhaust is connected to the top of the sealing seat (3), one end of the exhaust transparent hose (4) is connected to a hose (5), and an ultrasonic air detector (6) is provided at the bottom of the hose (5), and bubbles in the exhaust transparent hose (4) are detected by the ultrasonic air detector (6).

2. The sand hole detection device for producing an internally embedded patch type drip irrigation tape according to claim 1, characterized in that: A placement groove (7) is provided at the center of the top of the ultrasonic air detector (6), and the hose (5) is arranged in the placement groove (7).

3. The sand hole detection device for producing an internally embedded patch type drip irrigation tape according to claim 1, characterized in that: A fixing plate (8) is provided at the bottom of the ultrasonic air detector (6), and mounting holes (9) are provided at the four corners of the surface of the fixing plate (8).

4. The sand hole detection device for producing an internally embedded patch type drip irrigation tape according to claim 1, characterized in that: The negative pressure box (1) is made of stainless steel.

5. The sand hole detection device for producing an internally embedded patch type drip irrigation tape according to claim 1, characterized in that: The negative pressure box (1) is in a three-dimensional prismatic shape.

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