In the existing hot-dip galvanizing production line, the zinc pot sinking roller is an important roller that directly contacts the strip in the galvanizing process section. Due to the complex composition of zinc in the zinc pot and the high temperature, the working conditions of the zinc pot sinking roller are It is extremely bad, especially the large amount of zinc slag produced by the substitution of iron. These zinc slag adhered to the sunken rolls in the zinc pot will cause serious quality defects such as indentation and roll marks on the strip, reducing the qualified rate of products. In recent years, due to product upgrades, the large market demand for automotive boards, electrical cabinet boards and high-end home appliance boards has put forward higher and higher requirements for product surface quality, and this problem has become more prominent.
Qingdao Hexin Machinery Co., Ltd. found that the traditional slag removal on the roll surface uses a manual scraper, which is labor-intensive. Coupled with human factors, the slag removal effect is not good, and the flatness of the roll surface after slag removal cannot be guaranteed, which directly affects the strip steel. Surface quality after cooking. Through technical transformation, the motor is used to drive the scraper through the lead screw nut transmission structure, but in the harsh environment of high temperature on the zinc pot and full of zinc powder impurities, the lead screw nut is poorly lubricated, the structure wears quickly, and the service life is very low. In addition, with the intensification of wear and tear of mechanical equipment, the traveling device of the sunken roller scraper frequently appears jammed, and even the lead screw is deformed and damaged from time to time, which seriously affects the normal use of the sunken roller. As a result, a large number of product downgrades and after-sale quality objections have been brought about due to surface defects of strip steel, resulting in huge economic losses.
 
The purpose of an existing utility model is to provide a sunken roller scraper device for a zinc pot of a hot-dip galvanizing line, so as to solve the problems of serious wear of the lead screw nut, poor lubrication, deformation of the lead screw and easy jamming during the running process of the existing sunken roller scraper. .
In order to achieve the above purpose, the technical scheme adopted by the present utility model is:
A sunken roller scraper device for a zinc pot of a hot-dip galvanizing line, comprising a frame beam, a lead screw arranged at the top of the frame beam, a sunken roller fixedly connected at the bottom of the frame beam, and a track and a traveling mechanism arranged on the frame beam, A scraper mechanism is set on the traveling mechanism; the traveling mechanism includes a frame, a nut, a support roller and a guide roller, the frame is set across the top of the frame beam, and the nut sleeved on the lead screw is fixedly connected under the frame, and the two sides of the frame are symmetrical Several groups of support rollers are arranged to engage with both sides of the track, and several guide rollers are symmetrically arranged on both sides of the frame to contact the top surface of the track; the scraper mechanism includes a cylinder, a connecting rod, a scraper arm and a scraper, and the frame is provided with A connecting rod is set on the side of the cylinder close to the sinking roller, a scraper arm is set on the side of the connecting rod away from the cylinder, and a scraper is set at the tail end of the scraper arm.
In order to further realize the utility model, the frame includes a beam arranged on the top of the frame beam and side walls symmetrically arranged on both sides of the beam, and the bottom surface of the beam is fixed with connecting nuts.
In order to further realize the utility model, two groups of support rollers are symmetrically arranged on the side wall of the frame beam, each group is 2, and the support rollers are in rolling contact with both sides of the track.
In order to further realize the utility model, two guide rollers are provided on the side wall of the frame beam, and the guide rollers are in rolling contact with the top surface of the track.
In order to further realize the utility model, eccentric sleeves are arranged on the outer periphery of the support roller and the guide roller.
In order to further realize the utility model, the cylinder is a telescopic cylinder.
In order to further realize the utility model, a scraper arm positioning sheath is symmetrically arranged on the side wall of the frame beam, and the outer side of the scraper arm positioning sheath is opened, and the opening is matched with the scraper arm.
In order to further realize the utility model, the scraper arm is a curved arm.
In order to further realize the utility model, there are gaps between the two sides of the nut and the frame.
Compared with the prior art, the beneficial effects of the present utility model are:
The design of 8 support rollers and 4 guide rollers on the two sides of the frame of the utility model makes the whole frame have better stability and guidance during the walking process; all the support rollers and guide rollers are matched with the frame. The eccentric sleeve device is installed everywhere, which can adjust the pressure between the roller and the track online, compensate the gap caused by mechanical wear, and improve the service life of the roller; the design of the gap between the front and rear sides of the nut and the frame can effectively prevent the copper nut The jamming caused by the deformation of the lead screw due to the unbalanced radial force; according to different products combined with the actual situation of the roller surface, through the control of the cylinder pressure valve, the pressure force between the scraper and the sinking roller surface can be adjusted.
The utility model provides a scraper device for a sinking roller of a zinc pot applied to a hot-dip galvanizing line, which can adapt to the harsh environment of high temperature in the zinc pot area and serious adhesion of zinc ash and zinc slag, and can effectively prevent the walking jam, Lead screw deformation, poor lubrication and serious wear. It has the advantages of compact structure, small maintenance workload, high degree of standardization and long service life.