51results about How to "Maintain internal and external pressure balance" patented technology

The invention discloses a screw feeder for underwater coarse mineral particles. The screw feeder for the underwater coarse mineral particles comprises a cylinder and a rotary shaft. The rotary shaft is arranged in the cylinder and provided with screw blades. The two ends of the rotary shaft are pivoted to the cylinder. A feed port and a discharge port are formed in the outer walls of the two endsof the cylinder. The ends, close to the feed port and the discharge port, of the rotary shaft are each sleeved with an annular partition plate. The edges of the annular partition plates extend to positions near the inner wall of the cylinder. According to the screw feeder for the underwater coarse mineral particles, the internal pressure and the external pressure of the screw feeder can be kept balanced, so that uniform conveying of materials is achieved; meanwhile, the service life of the whole screw feeder is prolonged through the multiple sealing technique; and in addition, the adaptabilityof the feeder is improved through the replaceable screw blades.

A waste gas processing device (100) with a prolonged service life is used to process waste gas in processing equipment (200) provided with a plurality of inner work stations (201). The processing equipment (200) comprises six inner work stations (201), which are evenly arranged in the circumferential direction; each inner work station (201) is communicated with the waste gas process device (100), which is positioned on the center of the processing equipment (200), through a connection pipe (202); so the generated processing waste gas in each inner work station (201) can be pumped into the waste gas processing device, and the waste gas processing device filters the waste gas. The waste gas processing device (100) comprises a support frame, six waste gas filtering column units, which are arranged in the support frame, and a bottom circular plate (300), which is arranged on the bottom of the support frame and is provided with a waste gas inlet pipeline (71), which is used to connect each waste gas filtering column unit with the connection pipe (202).

The invention relates to an electronic water meter with a three-proofing function. The electronic water meter comprises a base, a shell, a water flow metering component, a spherical valve component and a main circuit board, an installation groove used for installing the main circuit board and an installation cavity used for installing a control circuit board of the water flow metering component are formed in the inner side of the shell, the installation groove and the installation cavity are both filled with organic silicon gel which can cover the corresponding circuit boards, and the wire outlet terminals in the shell are each coated with a silica gel layer; the shell is provided with first through holes allowing water vapor to get in and out. According to the electronic water meter, through structure design is adopted, a seal ring does not need to be arranged on the joint of the whole shell, air tightness sealing is not needed, the water vapor can pass through freely through the first through holes, the internal and external pressure balance in the water meter shell is guaranteed, the problems that in the water meter using process, plastic deformation occurs due to the imbalance of the internal and external pressure, and the water vapor is accumulated due to the fact that for the air tightness structure, the water vapor can easily get in but not easily get out are effectively solved, the reliability of the water meter is improved, and the service life of the water meter is prolonged.

An intelligent waste gas treatment device (100) is used for treating waste gas of processing equipment (200) with six internal working stations (201). The processing equipment (200) comprises the internal working stations (201) evenly arranged in the circumferential direction, all the internal working stations (201) are communicated with an annular gas collection pipe (306) detachably installed on the processing equipment (200) through connecting pipes (202), and a detachable gas delivery pipe (301) used for being communicated with the waste gas treatment device (100) located in the center of the processing equipment (200) is arranged on the annular gas collection pipe (306); accordingly, processing waste gas generated in the internal working stations (201) is firstly delivered into the annular gas collection pipe (306) and then delivered into the waste gas treatment device (100) from the annular gas collection pipe (306) to be filtered.

An exhaust gas treatment device (100) for treating exhaust gas of processing equipment (200) comprises six internal workstations (201) which are uniformly arranged in the circumferential direction, wherein each of the six internal workstations (201) is communicated with the exhaust gas treatment device (100) at the center of the processing equipment (200) through a connecting pipe (202), so that processing exhaust gas generated in each of the six internal workstations (201) is pressed to the exhaust gas treatment device (100) to be filtered; the exhaust gas treatment device (100) comprises a supporting rack, six exhaust gas filter column units arranged in the supporting rack and a bottom circular plate (300) in the bottom of the supporting rack provided with an exhaust gas inlet pipeline (71) for connecting each of the exhaust gas filter column units with the connecting pipe (202).

Provided is an easily cleaned exhaust gas treatment apparatus (100) that is used to treat exhaust gas of a processing device (200) that has multiple internal workstations (201). The processing device (200) comprises six internal workstations (201) that are uniformly arranged in a circumferential direction; each of the internal workstations (201) is communicated, through a connecting pipe (202), with an annular gas gathering pipe (306) that can be detachably mounted on the processing device (200); a gas delivery pipe (301) is provided on the annular gas gathering pipe (306); the gas delivery pipe (301) is used to be communicated with the exhaust gas treatment apparatus (100) that is located in the center of the processing device (200), and the gas delivery pipe is detachable; therefore, processing exhaust gas generated in each of the internal workstations (201) is firstly delivered to the annular gas gathering pipe (306), and then is delivered from the annular gas gathering pipe (306) to the exhaust gas treatment apparatus (100) for filtration.

An exhaust gas treatment device (100) with an electric control valve is used for treating exhaust gas of processing equipment (200) provided with a plurality of internal workstations (201), wherein the processing equipment (200) comprises six internal workstations (201) which are uniformly arranged in the circumferential direction; each of the internal workstations (201) is communicated with the exhaust gas treatment device (100) at the center of the processing equipment (200) through a connecting pipe (202), so that processing exhaust gas generated in each of the six internal workstations (201) is pressed to the exhaust gas treatment device (100) to be filtered; the exhaust gas treatment device (100) comprises a supporting rack, six exhaust gas filter column units arranged in the supporting rack and a bottom circular plate (300) in the bottom of the supporting rack provided with an exhaust gas inlet pipeline (71) for connecting each of the exhaust gas filter column units with the connecting pipe (202).