Waterproof material online detection equipment

Abstract

The present application relates to the technical field of coiled material production, and provides a waterproof material online detection device, which comprises two guide roller groups, each of which has two oppositely arranged guide rollers; the two guide rollers of each guide roller group are pressed on the coiled material with a certain pressure, so that the coiled material between the two guide roller groups is kept in a straight state; a detection mechanism is arranged between the two guide roller groups; a plurality of thickness detection assemblies are arranged, which detect the thickness change range of the coiled material in real time along with the transmission of the coiled material, and send a related signal when the thickness change value of the coiled material exceeds a preset range; and a control unit receives the signal sent by the thickness detection assembly, sends a corresponding control instruction after processing the signal. Thus, the present application detects the thickness change range of the coiled material in real time along with the transmission of the coiled material in the production process, and sends an alarm signal when the thickness change value of the coiled material exceeds a preset range; technical personnel can respond effectively in time, so that batch quality accidents can be avoided.

Description

Technical Field

[0001] This invention belongs to the field of roll material production technology, and in particular relates to an online testing device for waterproof materials. Background Technology

[0002] As disclosed in Chinese patent CN202010861127.8, the production process of waterproof membrane generally includes: spreading the membrane base material, spraying the adhesive, covering with the adhesive film, and winding. Currently, commonly used quality management methods include having operational personnel strengthen online inspections to identify and promptly address problems; and simultaneously coordinating with product sampling inspections to control product quality.

[0003] However, in recent years, with the increase in equipment automation, production lines capable of completing the entire production process have emerged, such as the equipment disclosed in Chinese patent CN201110132549.2, which greatly improves the level of automation and production efficiency. While production efficiency has significantly improved, it has also brought challenges to existing quality control methods. During the production process, if the production equipment experiences parameter fluctuations or precision failures, it may lead to quality fluctuations in the entire batch of products. Although the equipment's built-in detection function can issue alarm signals when abnormalities occur during equipment operation, it cannot detect problems with the product itself, such as uneven thickness of the roll material due to adhesive film coverage issues, in the first instance.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0005] To address the aforementioned shortcomings, this invention incorporates a thickness detection component that monitors the thickness variation range of the roll material in real time during production, and issues an alarm signal when the thickness variation exceeds a preset range. This allows technicians to respond promptly and effectively, preventing batch quality incidents.

[0006] To address the aforementioned problems, this invention provides an online testing device for waterproof materials, comprising two guide roller groups, each guide roller group having two oppositely arranged guide rollers; the two guide rollers of each guide roller group press the roll material with a certain pressure, keeping the roll material between the two guide roller groups taut.

[0007] A detection mechanism is located between two guide roller groups; the detection mechanism includes an upper branch pipe and a lower branch pipe arranged in parallel.

[0008] Multiple thickness detection components are arranged at equal intervals along the direction of the upper and lower branch pipes; the thickness detection components include an upper pressure cylinder fixed on the upper branch pipe and a lower pressure cylinder fixed on the lower branch pipe; as the roll material is conveyed, the thickness detection components detect the thickness variation range in real time, and issue relevant signals when the thickness variation value of the roll material exceeds the preset range.

[0009] The control unit receives signals from the thickness detection component, processes the signals, and issues corresponding control commands.

[0010] According to the online testing device for waterproof materials of the present invention, the upper pressure cylinder has a downward opening, and an annular baffle is provided at the opening position; a piston column is provided inside the upper pressure cylinder; a pressure rod is fixedly connected to the lower end face of the piston column, and a guide rod is fixedly connected to the upper end face; a universal roller is provided at the end of the pressure rod; the upper end face of the piston column is subjected to a certain pre-pressure, so that the universal roller is pressed against the roll material; the part of the guide rod that extends out of the top of the upper pressure cylinder is connected to an offset indicator component;

[0011] The pressure cylinder has an upward-facing opening, and a top column is slidably disposed inside the cylinder; the upper end face of the top column is connected to a universal roller, and a pressure sensor is sandwiched between the lower end face and the bottom of the cylinder; the pressure sensor is connected to a control unit.

[0012] The offset indicator component includes a magnifying box and a pointer;

[0013] The amplifier box is equipped with a transition gear, and the two sides of the transition gear are respectively meshed with the input gear and the output gear; the two end faces of the amplifier box are respectively equipped with an input rack that meshes with the input gear and an output rack that meshes with the output gear; the two ends of the input rack and the output rack are respectively slidably sleeved and fixed to the guide sleeve on the amplifier box;

[0014] The input rack is connected to the input indicator rod, and the input indicator rod is connected to the guide rod; the output rack is connected to the output indicator rod; the output indicator rod is directly opposite the marker rod.

[0015] According to the online testing device for waterproof materials of the present invention, a pressure spring is sleeved on the guide rod located inside the upper pressure cylinder.

[0016] According to the online testing device for waterproof materials of the present invention, one end of the upper branch pipe is closed, the other end is connected to an air pressure source, and the upper branch pipe is connected to an upper pressure cylinder.

[0017] According to the online testing device for waterproof materials of the present invention, a vent hole is provided on the side wall of the pressure cylinder.

[0018] According to the online testing device for waterproof materials of the present invention, the diameter ratio of the input gear to the output gear is 20-30:1.

[0019] According to the online testing equipment for waterproof materials of the present invention, the testing mechanism further includes a support head, the support head including an upper box and a lower box; both the upper box and the lower box have two opposite open ports; one end of the upper branch pipe is fixed in the upper box; one end of the lower branch pipe is installed in the lower box;

[0020] The detection mechanism also includes a base, on which a lifting device is fixedly mounted, and the lifting device is connected to a support head; the lifting device is an electric cylinder.

[0021] The bottom of the upper housing is fixed with a plug-in post, and the top of the lower housing is provided with a plug-in sleeve that plugs into the plug-in post; the plug-in post is screwed with an adjusting nut;

[0022] A clamping assembly is snapped between the upper and lower housings at the open ports on the same side; the clamping assembly includes two clamping plates, each clamping plate being fixedly connected to a clamping post; both clamping posts are threaded onto the same locking sleeve; the threads on the two clamping posts are of the same specification but in opposite directions.

[0023] According to the online testing device for waterproof materials of the present invention, one end of the lower branch pipe extending into the lower housing is rotatably mounted on the two side walls of the lower housing; a branch pipe shaft is fixed on each side of the lower branch pipe, and the branch pipe shaft is rotatably mounted on the side wall of the corresponding side; a support bolt is also threaded through the bottom of the lower housing.

[0024] According to the online testing device for waterproof materials of the present invention, the marker is further provided with a zero scale line, and offset sensors are symmetrically arranged on both sides of the zero scale line; an indicator light is provided on the upper branch pipe; the indicator light and the offset sensors are both connected to the control unit; limit sensors are also symmetrically arranged on both sides of the zero scale line.

[0025] According to the online testing device for waterproof materials of the present invention, the bottom of the upper branch pipe is fixedly connected to an infusion pipe, a control valve and a nozzle in sequence; the control valve is connected to a control unit.

[0026] In summary, by setting up a thickness detection component, this invention can detect the thickness variation range of the roll material in real time during the production process as it is being conveyed, and issue an alarm signal when the thickness variation exceeds a preset range; technicians can then take timely and effective measures to avoid batch quality accidents. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure in the AA direction;

[0029] Figure 3 yes Figure 2Schematic diagram of the structure of region B in the middle;

[0030] Figure 4 yes Figure 3 Schematic diagram of the structure of region D in the middle;

[0031] Figure 5 yes Figure 3 Schematic diagram of the structure in the middle E direction;

[0032] Figure 6 yes Figure 2 Schematic diagram of the structure of region C in the middle;

[0033] Figure 7 This is a schematic diagram of an embodiment of the internal structure of the upper pressure cylinder of the present invention;

[0034] Figure 8 This is a schematic diagram of an embodiment of the internal structure of the upper pressure cylinder of the present invention;

[0035] Figure 9 This is a schematic diagram of the internal structure of the pressure cylinder of the present invention;

[0036] Figure 10 yes Figure 8 Schematic diagram of the structure in the F direction;

[0037] Figure 11 yes Figure 10 A structural diagram of the central region;

[0038] Figure 12 yes Figure 11 Schematic diagram of the structure in the HH direction;

[0039] Figure 13 yes Figure 10 Schematic diagram of the structure of region G in the middle;

[0040] In the diagram: 1-Support head, 11-Lifter, 12-Base body, 13-Upper housing, 131-Plug-in column, 132-Adjusting nut; 14-Lower housing, 141-Plug-in sleeve; 15-Support bolt, 16-Clamping plate, 161-Clamping column, 162-Locking sleeve; 2-Upper pressure cylinder, 21-Upper branch pipe, 22-End cap, 23-Piston column, 24-Baffle, 25-Pressure rod, 26-Guide rod, 27-Pressure spring, 28-Indicator light; 3-Lower pressure cylinder, 31-Lower branch pipe, 32-Branch pipe shaft, 33- Top column, 34-pressure sensor, 35-vent hole; 4-universal roller, 5-amplifier box, 51-input gear, 52-transition gear, 53-output gear, 54-input rack, 541-anti-rotation bar; 55-output rack, 56-guide sleeve, 57-input indicator rod, 58-output indicator rod, 59-amplifier box base; 6-benchmark, 61-offset sensor, 62-limit sensor, 63-benchmark base; 7-infusion tube, 71-control valve, 72-nozzle; 100-guide roller group, 200-roll material. Detailed Implementation

[0041] See Figure 1 This invention provides an online testing device for waterproof materials, including...

[0042] Two guide roller groups 100, each guide roller group 100 having two guide rollers arranged opposite each other; the two guide rollers of each guide roller group 100 press the roll material 200 with a certain pressure, so that the roll material 200 between the two guide roller groups 100 remains taut; the present invention can be installed on existing waterproof roll material production lines, such as in the front section of the rolling process, to detect the roll material 200 in real time before the material is rolled.

[0043] The detection mechanism is located between the two guide roller groups 100; combined with Figure 2 The detection mechanism includes an upper branch pipe 21 and a lower branch pipe 31 arranged in parallel.

[0044] Multiple thickness detection components are arranged at equal intervals along the direction of the upper branch pipe 21 and the lower branch pipe 31; combined with Figure 6 The thickness detection component includes an upper pressure cylinder 2 fixed on the upper branch pipe 21 and a lower pressure cylinder 3 fixed on the lower branch pipe 31; as the roll material 200 is conveyed, the thickness detection component detects its thickness variation range in real time, and issues a relevant signal when the thickness variation value of the roll material 200 exceeds the preset range.

[0045] The control unit receives signals from the thickness detection component, processes the signals, and issues corresponding control commands.

[0046] See Figure 7The upper pressure cylinder 2 has a downward-facing opening, and an annular baffle 24 is provided at the opening position; a piston rod 23 is provided inside the upper pressure cylinder 2; the annular baffle 24 prevents the piston rod 23 from detaching from the upper pressure cylinder 2. A pressure rod 25 is fixedly connected to the lower end face of the piston rod 23, and a guide rod 26 is fixedly connected to the upper end face; a universal roller 4 is provided at the end of the pressure rod 25; the upper end face of the piston rod 23 is subjected to a certain preload, so that the universal roller 4 is pressed against the roll material 200; combined with Figure 10 The portion of the guide rod 26 that extends out of the top of the upper pressure cylinder 2 is connected to the offset indicator component; the offset indicator component can display the thickness fluctuation range of the roll 200 in real time, and issue a relevant signal when the change value of the thickness of the roll 200 exceeds the preset range;

[0047] As one embodiment, a pressure spring 27 is sleeved on the rod body of the guide rod 26 located inside the upper pressure cylinder 2; the pressure spring 27 generates a preload on the piston rod 23.

[0048] See Figure 8 One end of the upper branch pipe 21 is closed, and the other end is connected to an air pressure source. The upper branch pipe 21 is also connected to the upper pressure cylinder 2. Gas at a predetermined pressure is introduced into the upper pressure cylinder 2 through the air pressure source, thereby subjecting the piston column 23 to a constant pre-pressure. By controlling the input air pressure, the magnitude of the pre-pressure is controlled to prevent large indentations of its universal roller 4 on the roll material 200.

[0049] Even better, the open end of the upper branch pipe 21 is connected to the end cap 22, which is connected to the air pressure source.

[0050] See Figure 9 The lower pressure cylinder 3 has an upward-facing opening, and a top column 33 is slidably mounted inside the cylinder. A universal roller 4 is connected to the upper end of the top column 33, and a pressure sensor 34 is sandwiched between the lower end and the bottom of the cylinder. The pressure sensor 34 is connected to a control unit. Raising the height of the lower branch pipe 31 allows the universal roller 4 of the top column 33 to adhere to the roll material 200. The pressure sensor 34 transmits the measured pressure value to the control unit. By precisely adjusting the height of the lower branch pipe 31 so that the value detected by the pressure sensor 34 is within a reasonable range, it can be determined that the universal roller 4 of the lower pressure cylinder 3 has adhered to the roll material 200, and that the pressure is within a reasonable range. This avoids excessive pressing force that could cause large indentations on the surface of the roll material 200, affecting the accuracy of the test results.

[0051] Even better, a vent hole 35 is provided on the side wall of the pressure cylinder 3 to prevent the gas inside the cylinder from hindering the downward movement of the top column 33; at the same time, the signal line of the pressure sensor 34 can also extend from the vent hole 35.

[0052] During testing, the universal rollers 4 of the lower pressure cylinder 3 and the upper pressure cylinder 2 press against the roll material 200 from both top and bottom. The position of the lower pressure cylinder 3 is fixed; therefore, any increase or decrease in the thickness of the roll material 200 will cause the piston rod 23 of the upper pressure cylinder 2 to rise or fall by the same amplitude. This movement is transmitted to the offset indicator component via the guide rod 26. Technicians can monitor the thickness of the roll material 200 in real time based on the signal sent by the offset indicator component. Those skilled in the art can set the thickness fluctuation range according to the type or model of the produced roll material 200. When the fluctuation range is detected to exceed the limit, effective measures can be taken promptly to prevent defective products from entering the next process.

[0053] See Figure 3 As one embodiment, the detection mechanism of the present invention further includes a support head 1, which includes an upper housing 13 and a lower housing 14; both the upper housing 13 and the lower housing 14 have two opposite open ports; one end of the upper branch pipe 21 is fixed in the upper housing 13; and one end of the lower branch pipe 31 is installed in the lower housing 14.

[0054] The detection mechanism also includes a base body 12, on which a lifting device 11 is fixed, and the lifting device 11 is connected to the support head 1; the lifting device 11 of the present invention is preferably an electric cylinder, which can precisely adjust the height of the support head 1.

[0055] See Figure 4 The bottom of the upper housing 13 is fixed with a plug-in post 131, and the top of the lower housing 14 is provided with a plug-in sleeve 141 that is plugged into the plug-in post 131; the plug-in post 131 is screwed with an adjusting nut 132; the distance between the two housings can be adjusted by turning the adjusting nut 132 so that it can be used for rolls 200 of different thicknesses.

[0056] A clamping assembly is engaged between the upper housing 13 and the lower housing 14 at their open ports on the same side. The clamping assembly includes two clamping plates 16, each clamping plate 16 being fixedly connected to a clamping post 161. Both clamping posts 161 are threaded onto the same locking sleeve 162. The threads on the two clamping posts 161 are of the same specification but rotate in opposite directions. By turning the locking sleeve 162, the two clamping plates 16 can move in opposite directions, thereby achieving the clamping and loosening of the upper housing 13 and the lower housing 14.

[0057] Better, see Figure 5To precisely adjust the parallelism between the upper branch pipe 21 and the lower branch pipe 31, one end of the lower branch pipe 31 extending into the lower housing 14 is rotatably mounted on the two side walls of the lower housing 14; a branch pipe shaft 32 is fixed on each side of the lower branch pipe 31, and the branch pipe shaft 32 is rotatably mounted on the side wall of the corresponding side; a support bolt 15 is also threaded through the bottom of the lower housing 14; by turning the support bolt 15, the rotation amplitude of the lower branch pipe 31 relative to the branch pipe shaft 32 can be finely adjusted, thereby precisely adjusting the parallelism between the upper branch pipe 21 and the lower branch pipe 31.

[0058] See Figure 11 The offset indicator component includes a magnifying box 5 and a pointer 6;

[0059] The amplifier box 5 is equipped with a transition gear 52, and the two sides of the transition gear 52 are respectively meshed with the input gear 51 and the output gear 53. The two end faces of the amplifier box 5 are respectively equipped with an input rack 54 that meshes with the input gear 51 and an output rack 55 that meshes with the output gear 53. The two ends of the input rack 54 and the output rack 55 are respectively slidably sleeved and fixed to the guide sleeve 56 on the amplifier box 5, so that the input rack 54 and the output rack 55 can reciprocate stably in the vertical direction.

[0060] The input rack 54 is connected to the input indicator rod 57, and the input indicator rod 57 is connected to the guide rod 26; the output rack 55 is connected to the output indicator rod 58; the output indicator rod 58 is directly opposite the marker rod 6;

[0061] The up-and-down movement of the guide rod 26 is transmitted through the gears within the amplification box 5 and ultimately reflected on the output indicator rod 58. Typically, the thickness fluctuation of the roll material 200 is on the order of millimeters or less than 1 millimeter. Therefore, to ensure that this fluctuation can be detected, the diameter ratio of the input gear 51 to the output gear 53 in this invention is 20-30:1; small thickness fluctuations can be significantly reflected at one end of the output indicator rod 58.

[0062] Even better, the input indicator rod 57 and the guide rod 26 are connected by magnetic attraction, which makes it easy to disconnect and avoid damage to the components due to excessive fluctuations during the debugging stage.

[0063] The pointer 6 is provided with a scale value, and the upper and lower offset of the output indicator 58 can be read through the scale value;

[0064] Even better, the pointer 6 is also equipped with a zero mark. In the initial state, the output indicator 58 points to the zero mark. Offset sensors 61 are symmetrically arranged on both sides of the zero mark; the distance between the offset sensors 61 and the zero mark is within an acceptable fluctuation range. An indicator light 28 is provided on the upper branch pipe 21; both the indicator light 28 and the offset sensors 61 are connected to the control unit; when the offset of the output indicator 58 exceeds the limit, the offset sensor 61 sends a signal to the control unit, which then sends a flashing signal to the indicator light 28.

[0065] Once technicians see indicator light 28 illuminate, they can go to the site to investigate the cause of the thickness fluctuation of the roll material 200, such as excessive or insufficient coating thickness, or the presence of wrinkles, and take timely action.

[0066] Furthermore, limit sensors 62 are symmetrically arranged on both sides of the zero mark. When the output indicator rod 58 reaches the position of the limit sensor 62, it can be determined that a serious quality problem has occurred. After receiving the signal from the limit sensor 62, the control unit issues a stop signal to suspend the production line, investigate the problem, and avoid further production of defective products.

[0067] See Figure 13 In one embodiment, the bottom of the upper branch pipe 21 is fixedly connected to an infusion pipe 7, a control valve 71, and a nozzle 72 in sequence; the control valve 71 is connected to a control unit; a certain pressure of marking liquid is introduced into the infusion pipe 7. When the control unit receives a signal from the offset sensor 61, it sends a conduction signal to the control valve 71, and the nozzle 72 sprays marking liquid onto the roll material 200 to mark the position where the thickness fluctuation exceeds the standard, so that technicians can check it.

[0068] See Figure 12 Even better, an anti-rotation strip 541 is fixed on the input rack 54, and a corresponding groove is provided inside the guide sleeve 56. This prevents the input rack 54 from rotating. The same structure can also be made on the output rack 55 of the present invention to prevent rotation.

[0069] Even better, the bottom of the magnifying box 5 is provided with a magnifying box base 59; the pointer 6 is set on the pointer base 63; both the magnifying box base 59 and the pointer base 63 are magnetically attached to the top of the upper pressure cylinder, which facilitates disassembly and connection.

[0070] In summary, this invention provides an online testing device for waterproof materials. By setting up a thickness detection component, the device can detect the thickness variation range of the rolled material in real time during the production process as it is conveyed, and issue an alarm signal when the thickness variation exceeds a preset range. Technicians can then take timely and effective measures to avoid batch quality accidents.

[0071] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. An online testing device for waterproof materials, characterized in that, include Two guide roller groups, each guide roller group has two guide rollers arranged opposite each other; the two guide rollers of each guide roller group press the roll material with a certain pressure, so that the roll material between the two guide roller groups is kept taut. A detection mechanism is located between two guide roller groups; the detection mechanism includes an upper branch pipe and a lower branch pipe arranged in parallel. Multiple thickness detection components are arranged at equal intervals along the direction of the upper and lower branch pipes; the thickness detection components include an upper pressure cylinder fixed on the upper branch pipe and a lower pressure cylinder fixed on the lower branch pipe; as the roll material is conveyed, the thickness detection components detect the thickness variation range in real time, and issue relevant signals when the thickness variation value of the roll material exceeds the preset range. The control unit receives signals from the thickness detection component, processes the signals, and issues corresponding control commands. The upper pressure cylinder has a downward opening, and an annular baffle is provided at the opening position; a piston column is provided inside the upper pressure cylinder; a pressure rod is fixedly connected to the lower end face of the piston column, and a guide rod is fixedly connected to the upper end face; a universal roller is provided at the end of the pressure rod; the upper end face of the piston column is subjected to a certain pre-pressure, so that the universal roller is pressed against the roll material; the part of the guide rod that extends out of the top of the upper pressure cylinder is connected to an offset indicator component; The pressure cylinder has an upward-facing opening, and a top column is slidably disposed inside the cylinder; the upper end face of the top column is connected to a universal roller, and a pressure sensor is sandwiched between the lower end face and the bottom of the cylinder; the pressure sensor is connected to a control unit. The offset indicator component includes a magnifying box and a pointer; The amplifier box is equipped with a transition gear, and the two sides of the transition gear are respectively meshed with the input gear and the output gear; the two end faces of the amplifier box are respectively equipped with an input rack that meshes with the input gear and an output rack that meshes with the output gear; the two ends of the input rack and the output rack are respectively slidably sleeved and fixed to the guide sleeve on the amplifier box; The input rack is connected to the input indicator rod, and the input indicator rod is connected to the guide rod; the output rack is connected to the output indicator rod; the output indicator rod is directly opposite the marker rod; The diameter ratio of the input gear to the output gear is 20-30:1; The marker is also equipped with a zero mark, and offset sensors are symmetrically arranged on both sides of the zero mark; an indicator light is provided on the upper branch pipe; the indicator light and the offset sensors are both connected to the control unit; limit sensors are also symmetrically arranged on both sides of the zero mark. The bottom of the upper branch pipe is fixedly connected to an infusion tube, a control valve, and a nozzle in sequence; the control valve is connected to a control unit. When the offset of the output indicator rod exceeds the limit, the offset sensor control unit sends a signal, and the control unit then sends a flashing signal to the indicator light. A certain pressure of marking liquid is introduced into the infusion tube; when the control unit receives the signal from the offset sensor, it sends a conduction signal to the control valve, and the nozzle sprays the marking liquid onto the roll material to mark the position where the thickness fluctuation exceeds the standard. One end of the upper branch pipe is closed, and the other end is connected to a gas pressure source. The upper branch pipe is also connected to an upper pressure cylinder.

2. The online testing equipment for waterproof materials as described in claim 1, characterized in that, Ventilation holes are provided on the side wall of the pressure cylinder.

3. The online testing equipment for waterproof materials as described in claim 1 or 2, characterized in that, The testing mechanism also includes a support head, which comprises an upper housing and a lower housing; both the upper housing and the lower housing have two opposite open ports; one end of the upper branch pipe is fixed in the upper housing; and one end of the lower branch pipe is installed in the lower housing. The detection mechanism also includes a base, on which a lifting device is fixedly mounted, and the lifting device is connected to a support head; the lifting device is an electric cylinder. The bottom of the upper housing is fixed with a plug-in post, and the top of the lower housing is provided with a plug-in sleeve that plugs into the plug-in post; the plug-in post is screwed with an adjusting nut; A clamping assembly is snapped between the upper and lower housings at the open ports on the same side; the clamping assembly includes two clamping plates, each clamping plate being fixedly connected to a clamping post; both clamping posts are threaded onto the same locking sleeve; the threads on the two clamping posts are of the same specification but in opposite directions.

4. The online testing equipment for waterproof materials as described in claim 3, characterized in that, One end of the lower branch pipe extending into the lower housing is rotatably mounted on the two side walls of the lower housing; a branch pipe shaft is fixed on each side of the lower branch pipe, and the branch pipe shaft is rotatably mounted on the side wall of the corresponding side; a support bolt is also threaded through the bottom of the lower housing.

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