摘要:
Disclosed herein is a dome security camera. The camera includes a housing having a circuit part. A hemispherical cover is coupled to the housing. A camera module includes a casing which has a lens mounted on a central portion thereof and coupled to a barrel, a plurality of LEDs, and a sensor. A bracket is provided in the housing and coupled to the casing in such a way that it is rotated and open or closed. The casing has a hemispherical shape, and an annular coupling step is provided on a lower end of the casing. The bracket is a cylindrical member having an opening on an upper end thereof, and includes an enlarged part provided on the upper end of the opening and coupled to the casing, and a cut groove formed by cutting a side surface of the bracket, with a knob inserted into the cut groove.
摘要:
Disclosed herein is a dome security camera. The camera includes a housing having a circuit part. A hemispherical cover is coupled to the housing. A camera module includes a casing which has a lens mounted on a central portion thereof and coupled to a barrel, a plurality of LEDs, and a sensor. A bracket is provided in the housing and coupled to the casing in such a way that it is rotated and open or closed. The casing has a hemispherical shape, and an annular coupling step is provided on a lower end of the casing. The bracket is a cylindrical member having an opening on an upper end thereof, and includes an enlarged part provided on the upper end of the opening and coupled to the casing, and a cut groove formed by cutting a side surface of the bracket, with a knob inserted into the cut groove.
摘要:
A dome type security camera structure with a reinforced waterproofing function is disclosed. The camera structure includes a housing (100) having an outside wire insert hole (110), and a pair of opposite guide grooves (120). Each guide groove communicates with an outside via a discharge hole (130). A mounting bracket (200) has a coupling protrusion (210) guided by each guide groove, and is gradually inclined outwards from a center thereof so that an edge thereof presses a lower surface of the housing and thus the mounting bracket is coupled to the housing. A holder (300) is provided on a lower surface of the mounting bracket in such a way as to perform rotation on 2 or 3 axes, with a camera module mounted to the holder. A dome screen (400) is mounted to the mounting bracket, and surrounds the holder.
摘要:
Disclosed herein is a mounting device for a security camera. In the mounting device, a mounting plate means is fastened and then a cover means is fitted into the mounting plate means when the security camera is mounted to a building, thus enabling easy and convenient installation. The mounting device includes a mounting plate means and a cover means. The mounting plate means includes a mounting plate having a plurality of mounting holes at regular intervals to mount the mounting plate means to a wall, and a pocket part integrally provided on a predetermined portion of the mounting plate and having an insert space. The cover means includes a body having on a central portion thereof a coupling sleeve, with a camera coupling means being coupled to the coupling sleeve. An insert part is integrally provided on the body and fitted into the insert space.
摘要:
A dome type security camera structure with a reinforced waterproofing function is disclosed. The camera structure includes a housing (100) having an outside wire insert hole (110), and a pair of opposite guide grooves (120). Each guide groove communicates with an outside via a discharge hole (130). A mounting bracket (200) has a coupling protrusion (210) guided by each guide groove, and is gradually inclined outwards from a center thereof so that an edge thereof presses a lower surface of the housing and thus the mounting bracket is coupled to the housing. A holder (300) is provided on a lower surface of the mounting bracket in such a way as to perform rotation on 2 or 3 axes, with a camera module mounted to the holder. A dome screen (400) is mounted to the mounting bracket, and surrounds the holder.
摘要:
Disclosed are a molecular sieve catalyst and a preparation method thereof to produce light olefins from cracking naphtha catalytically in severe environments of high temperature and high moisture. In detail, the catalyst is prepared by spray-drying and calcining the mixed slurry, in which 0.01˜5.0 wt % of MnO2 and 1˜15 wt % of P2O5 are simultaneously imbedded in catalyst which consists of zeolite, clay and inorganic complex. According to the present invention, the method that manganese and phosphate are imbedded simultaneously in zeolite and inorganic complex is used to increases thermal-stability of obtained spherical catalyst, and increase olefin yield of cracking hydrocarbon such as naphtha by protecting acid-site of zeolite. To synthesize the required catalyst, the important procedures are mixing ratio and mixing sequence of Mn, P, zeolite, and inorganic complex.
摘要翻译:公开了一种分子筛催化剂及其制备方法,用于在严酷的高温高湿环境下催化裂解石脑油。 详细地,通过喷雾干燥和煅烧混合浆料制备催化剂,其中0.01〜5.0wt%的MnO 2和1〜15wt%的P 2 O 5同时嵌入由沸石,粘土和无机络合物组成的催化剂中。 根据本发明,使用锰和磷酸盐同时嵌入沸石和无机络合物的方法来提高所得球形催化剂的热稳定性,并通过保护沸石的酸性位点来提高裂解烃如石脑油的烯烃产率。 为了合成所需的催化剂,重要的步骤是Mn,P,沸石和无机络合物的混合比和混合顺序。
摘要:
Disclosed are a molecular sieve catalyst and a preparation method thereof to produce light olefins from cracking naphtha catalytically in severe environments of high temperature and high moisture. In detail, the catalyst is prepared by spray-drying and calcining the mixed slurry, in which 0.01˜5.0 wt % of MnO2 and 1˜15 wt % of P2O5 are simultaneously imbedded in catalyst which consists of zeolite, clay and inorganic complex. According to the present invention, the method that manganese and phosphate are imbedded simultaneously in zeolite and inorganic complex is used to increases thermal-stability of obtained spherical catalyst, and increase olefin yield of cracking hydrocarbon such as naphtha by protecting acid-site of zeolite. To synthesize the required catalyst, the important procedures are mixing ratio and mixing sequence of Mn, P, zeolite, and inorganic complex.
摘要翻译:公开了一种分子筛催化剂及其制备方法,用于在严酷的高温高湿环境下催化裂解石脑油。 详细地,通过喷雾干燥和煅烧混合浆料制备催化剂,其中0.01〜5.0重量%的MnO 2和1〜15重量%的P 2 O 5同时嵌入由沸石,粘土和无机络合物组成的催化剂中。 根据本发明,使用锰和磷酸盐同时嵌入沸石和无机络合物的方法来提高所得球形催化剂的热稳定性,并通过保护沸石的酸性位点来提高裂解烃如石脑油的烯烃产率。 为了合成所需的催化剂,重要的步骤是Mn,P,沸石和无机络合物的混合比和混合顺序。
摘要:
A method of preparing ZSM-5, including: providing a nanocrystalline ZSM-5 seed having a size of 70-150 nm; adding the nanocrystalline ZSM-5 seed to a stock solution including water glass as a silica source, an alumina source, a neutralizer and water to form a reaction mixture; and maintaining the reaction mixture at 150-200° C. to crystallize the reaction mixture. The method is advantageous in that ZSM-5 having small and uniform crystal sizes and including no impurities can be synthesized in a short period of time.
摘要:
Disclosed are a hydrothermally stable porous molecular sieve catalyst and a preparation method thereof. The catalyst consists of a product obtained by the evaporation of water from a raw material mixture comprising a molecular sieve having a framework of Si—OH—Al—, a water-insoluble metal salt and a phosphate compound. The catalyst maintains its physical and chemical stabilities even in an atmosphere of high temperature and humidity. Accordingly, the catalyst shows excellent catalytic activity even when it is used in a severe process environment of high temperature and humidity in heterogeneous catalytic reactions, such as various oxidation/reduction reactions, including catalytic cracking reactions, isomerization reactions, alkylation reactions and esterification reactions.