53results about How to "Effective pressure relief" patented technology

A noodle maker operating safely comprises a base, a stirring cup connected with the base, and an upper cover covering the stirring cup, and is further provided with a stirring component and a noodle extruding component, wherein the stirring component comprises a stirring rod arranged in the stirring cup; and the noodle extruding component comprises a noodle extruding cylinder with a noodle inlet, a screw rod arranged in the noodle extruding cylinder, and an end cover closing a noodle outlet of the noodle extruding cylinder and forming a forming port. The noodle maker is characterized in that the screw rod comprises a screw rod body, threads formed on the surface of the screw rod body, and a safety protection structure arranged at the front end of the screw rod; the rotating speed of the screw rod is 50-70rpm in a stirring stage, and 40-65rpm in a noodle outlet stage; and the rotating directions of the screw rod in the noodle outlet stage and the stirring stage are opposite. The adopted safety protection structure can reduce material pressure at the front end of the screw rod, and effectively prevent the noodle extruding component from damage due to the fact that the screw rod continuously feeds when the noodle maker operates.

The invention relates to flame-guard filters (F) consisting of a number of layer sequences (S1, S2, S3), wherein each of the layer sequences (S1, S2, S3) consists of filter layers (1, 2) arranged on top of each other. Each layer sequence (S1, S2, S3) consists of a first filter layer (1) and of a second filter layer (2), each made of a material arranged in a lattice formation and having openings (1.1, 2.1), each with an opening width (1.11, 2.11). The first filter layer (1) having a free side face (6.3) is a first end-filter layer (3) with a first end- filter opening width (3.11), and the second filter layer (2) having a free side face (6.4) is a second end-filter layer (4) with a second end-filter opening width (4.11). The second opening width (2.11) of a second filter layer (2) is smaller than the first opening width (1.11) of a first filter layer (1). The second filter layer (2) is opaque. The invention further relates to an arrangement (10) of at least two flame-guard filters (F1, F2), and also to a housing (9) which is encapsulated in a pressure-resistant manner and has at least one flame-guard filter (F, F1, F2).

This invention discloses a method for depressuring gas in ground drilled well and mining area. Before extracting coal a ground drilling well is drilled from ground to long distance, low breathing, high gas, projecting and soft covered seams, then extracting down seam. The gas from the up covered seam is exhausted from pipe.

The invention discloses a fire extinguishment system and a fire extinguishment method in a fabrication bin of an electrochemical energy storage station based on gas extinguishment and mechanical ventilation and heat dissipation. The system comprises automatic gas extinguishment systems, a pressure relief system and a mechanical ventilation and heat dissipation system. The automatic gas extinguishment systems are correspondingly positioned at the two sides of two rows of battery cabinets in order to realize precise automatic fire extinguishment when thermal runaway occurs in a lithium ion battery; the pressure relief system is positioned above the short side of the prefabrication bin and can be automatically started for relieving the pressure when the pressure inside the prefabrication binis too high; the mechanical ventilation and heat dissipation system consists of an air charging fan, an exhausting fan and a water mist sprayer which are positioned at the two short sides of the prefabrication bins and are in diagonal distribution; and the mechanical ventilation and heat dissipation system is controlled by virtue of a smoke sensor and a pressure sensor so as to realize smoke discharging and temperature reduction functions. The fire extinguishment system and the fire extinguishment method disclosed by the invention can be used for quickly extinguishing a fire of a battery and discharging high-temperature smoke in time, thereby reducing the temperature of the battery and guaranteeing high-efficiency safe running of an energy storage system in the prefabrication bin.

The invention provides an insensitive warhead pressure relief structure controlled by temperature and pressure, which can be applied to a high-strength and strongly restrained warhead for penetration and overload. The pressure relief structure of the present invention includes a body socket, which is connected to the tail of the warhead shell and forms an airtight integral structure with the warhead shell to ensure the integrity of the warhead structure during the penetration process; the warhead shell is provided with The pressure relief hole is provided with a charging hole on the body joint sleeve, and the pressure relief hole on the warhead shell is blocked by the pressure relief hole plugging screw composed of a nut cover with a stress groove and a fusible body in the cover, and The charging hole plugging cover with fusible core blocks the charging hole, and when the temperature and pressure reach the design value, the effective pressure relief of the high-strength and strongly restrained warhead that penetrates and overloads is realized.

The invention discloses a non-pressure grouting method based on mine construction. The method comprises the following steps of, S1, arranging a plurality of grouting holes along the cross section of amine well wall, and correspondingly mounting a gate valve on each grouting hole; S2, opening all gate valves; S3, grouting the grouting holes according to the horizontal height from bottom to top, and closing the gate valves on the corresponding grouting holes after grouting of each grouting hole is completed; and S4, after all the gate valves on the grouting holes are closed, completing the grouting. According to the method, in the grouting process, the corresponding gate valves on the grouting holes subjected to the grouting are all opened, pressure relief can be effectively carried out, and grouting in the non-pressure state can be realized in the whole grouting process, so that the pressure of the well wall is greatly reduced, and the quality of the well wall is ensured.

A microphone wind noise preventing apparatus (10) and an electronic device. The apparatus (10) comprises a first sound hole (11), a second sound hole (12), a first cavity (13), a second cavity (14), and a communication channel. The first sound hole (11) and the second sound hole (12) are communicated with each other by means of the first cavity (13). A first flow blocking part opposite to the first sound hole (11) and a second flow blocking part opposite to the second sound hole (12) are provided in the first cavity (13). The communication channel is used for communicating the first cavity (13) with the second cavity (14). The second cavity (14) is communicated with a microphone sound hole (17). An inlet (19) of the communication channel is located between the first flow blocking part and the second flow blocking part. A technical problem to be solved is high wind noise of the existing microphone body. One application of the microphone wind noise preventing apparatus is used for the electronic device.

An explosive-proof and intrinsically safe roadway lamp relates to the technical field of mining lamps. The technical problems to be solved are to reduce the cost and improve explosive-proof performance. The roadway lamp comprises a lamp shell, a lighting lamp installed in an intrinsic safety cavity of the lamp shell, and an explosive-proof cavity body fixed on the lamp shell, wherein the explosive-proof cavity body is a cylindrical cavity body with an open right end and a sealed left end, and a detachable plastic explosive-proof cover is fixed at the right end; the explosive-proof cavity body has three structural layers which are respectively a plastic outer layer, a metal middle layer and a plastic inner layer sequentially from outside to inside; adjacent layers are stuck mutually, and the right edge of each structural layer is retracted leftwards along the right edge of the external adjacent structural layer per se; the explosive-proof cover covers the opening at the right end of the explosive-proof cavity body; the explosive-proof cover is fixedly provided with a metal ring; the outer ring surface of the metal ring is tightly stuck with the inner wall surface of the metal middle layer of the explosive-proof cavity body. The roadway lamp provided in the invention can be used safely in an environment with flammable and explosive gases.