Abstract: A bladder-type pressure tank includes an outer shell, a bladder, a nozzle, and an elbow pipe. The outer shell includes a liner and a glass-fiber layer covering the outer surface of the liner. The liner includes polyethylene (PE). The liner further includes a chamber, a first opening, and a second opening. The bladder is disposed in the chamber. In an inflated state of the bladder, a gap is formed between the inflated bladder and the inner surface of the liner. The bladder includes polyurethane (PU). The nozzle is integrated with the bladder, and is disposed in the first opening and seals the first opening. The elbow pipe includes a first end and a second end. The first end of the elbow pipe is disposed in the second opening and communicates with the chamber; and the second end of the elbow pipe is configured to connect to a pipeline.

Abstract: Disclosed is a solid acid catalyst for preparing D-galactose and a preparation method thereof. The method includes: S1. synthesis of a skeleton carrier: S11. preparation of a sodium aluminate solution and an organic template solution; S12. mixing the sodium aluminate solution with the organic template solution, and thoroughly shaking a resulting mixture to obtain a mixed solution; S13. adding a zirconium source to the mixed solution obtained in S12, and thoroughly mixing; S14. subjecting a reaction system obtained in S13 to a hydrothermal reaction to obtain a mixed crystal ZrO2/Al2O3; and S15. rapidly heating the mixed crystal ZrO2/Al2O3 obtained in S14 until the organic template is completely ashed, and washing a resulting product with absolute ethanol to obtain a white solid ZrO2/Al2O3; and S2. soaking the skeleton carrier obtained in S1 in concentrated sulfuric acid such that sulfonyl is loaded on the skeleton carrier to obtain the target solid acid.

Abstract: A strapping machine and head are provided including a mounting base, a sealing assembly including a cutter for cutting the strapping tape and a sealing element for welding a strapping tape. The sealing assembly, which is slidably disposed on the mounting base, includes a first, second, and a third clamping mechanism, for clamping the strapping tape. A belt feeding assembly including a first motor, a driving wheel and a guide block fixedly disposed on the mounting base. The driving wheel rotatably disposed on the mounting base and an arc-shaped belt feeding channel is formed between the driving wheel and the guide block. The first motor drives the driving wheel to rotate, and a driving assembly drives the sealing assembly close to or away from the driving wheel. A balanced tension is applied to a strapping tape through a strapping machine head to improve the strapping quality of the strapping machine.

Abstract: A rotary translational strapping apparatus and strapping method thereof are provided including a support frame, a rotary module, and a translational strapping module, the rotary module includes a rotary guide, a rotary frame, and a first driving mechanism, the rotary guide is disposed on top of the support frame, the rotary frame is rotatably disposed on the rotary guide, the first driving mechanism is used for driving the rotary frame to rotate relative to the rotary guide. The translational strapping module includes a sliding mount, a strapping head, a strapping chute, and a second driving mechanism. The sliding mount is slidably disposed on the rotary frame.

Abstract: A strapping machine and head are provided including a mounting base, a sealing assembly including a cutter for cutting the strapping tape and a sealing element for welding a strapping tape. The sealing assembly, which is slidably disposed on the mounting base, includes a first, second, and third clamping mechanism, for clamping the strapping tape. A belt feeding assembly including a first motor, a driving wheel and a guide block fixedly disposed on the mounting base. The driving wheel is rotatably disposed on the mounting base and an arc-shaped belt feeding channel is formed between the driving wheel and the guide block. The first motor drives the driving wheel to rotate, and a driving assembly drives the sealing assembly close to or away from the driving wheel. A balanced tension is applied to a strapping tape through a strapping machine head to improve the strapping quality of the strapping machine.

Abstract: A rotary translational strapping apparatus and strapping method thereof are provided including a support frame, a rotary module, and a translational strapping module, the rotary module includes a rotary guide, a rotary frame, and a first driving mechanism, the rotary guide is disposed on top of the support frame, the rotary frame is rotatably disposed on the rotary guide, the first driving mechanism is used for driving the rotary frame to rotate relative to the rotary guide. The translational strapping module includes a sliding mount, a strapping head, a strapping chute, and a second driving mechanism. The sliding mount is slidably disposed on the rotary frame.

Abstract: An adjusting device of an output voltage of a switch power supply and an adjusting method are provided. The adjusting device includes a potential setting module generating a high level signal and an adjustor being connected to the potential setting module to receive the high level signal. The adjustor includes a signal emitting module and a comparison module. The signal emitting module emits a pulse drive signal to the switch power supply when receiving the high level signal. The switch power supply automatically adjusts the output voltage when receiving the pulse drive signal. The comparison module reads the output voltage, compares with a preset voltage, and adjusts the output voltage according to a comparison result. The switch power supply can stop the automatic adjustment when an output level of a switch port of the switch power supply is inverted. An integrated chip is also provided.

Abstract: A method, a system, and a control apparatus for setting an over-current protection point of an electronic device are provided. The method comprises: step 1, the parameter auto-test equipment transmitting a starting signal and outputting a target current for over-current protection based on the auto-adjustment control unit; step 2, the first driving signal generator receiving the starting signal and transmitting a driving signal to the over-current protection module; and step 3, the electronic device receiving the target current for over-current protection, and the over-current protection module receiving the driving signal and adjusting a resistance of the resistance adjusting unit to the over-current protection point of the electronic device. The invention attains fully automatic operation on the over-current protection point of the electronic device, improves stability and consistency of setting the over-current protection point, and saves labor cost at the same time.

Abstract: An adjusting device of an output voltage of a switch power supply and an adjusting method are provided. The adjusting device includes a potential setting module generating a high level signal and an adjustor being connected to the potential setting module to receive the high level signal. The adjustor includes a signal emitting module and a comparison module. The signal emitting module emits a pulse drive signal to the switch power supply when receiving the high level signal. The switch power supply automatically adjusts the output voltage when receiving the pulse drive signal. The comparison module reads the output voltage, compares with a preset voltage, and adjusts the output voltage according to a comparison result. The switch power supply can stop the automatic adjustment when an output level of a switch port of the switch power supply is inverted. An integrated chip is also provided.

Abstract: The invention discloses a method, a system, and a control apparatus for setting an over-current protection point of an electronic device. The method comprises: step 1, the parameter auto-test equipment transmitting a starting signal and outputting a target current for over-current protection based on the auto-adjustment control unit; step 2, the first driving signal generator receiving the starting signal and transmitting a driving signal to the over-current protection module; and step 3, the electronic device receiving the target current for over-current protection, and the over-current protection module receiving the driving signal and adjusting a resistance of the resistance adjusting unit to the over-current protection point of the electronic device. The invention attains fully automatic operation on the over-current protection point of the electronic device, improves stability and consistency of setting the over-current protection point, and saves labor cost at the same time.