Liquid receiving and stirring tank of coating machine

Abstract

The utility model belongs to the field of silicon steel production equipment, and particularly relates to a liquid receiving stirring tank of a coating machine, which comprises a tank body, a stirring frame, an air cylinder and a control system, the tank body is a semi-cylindrical tank formed by welding double layers of stainless steel, a liquid return port is arranged at the bottom of the tank body, and two overflow ports are symmetrically arranged at the 1 / 3 position of the semi-cylindrical surface of the tank body along the length direction of the tank body. Ball valves are installed at the tail ends of the liquid return port and the overflow port in a matched mode, the stirring frame comprises stirring blades, a sleeve and a connecting plate, the stirring blades and the connecting plate are welded to the sleeve, the sleeve is fixed to one side in the tank body through a sliding guide rod and arranged in the length direction of the tank body, and the connecting plate is connected with a cylinder rod of the air cylinder; the air cylinder is fixed to the outer side of the tank body and connected with the control system through a pneumatic pipeline. According to the stirring tank, the air cylinder, the electromagnetic directional valve, the counter and the throttle valve are combined to control the stirring direction, the stirring frequency and the stirring speed of the stirring frame to achieve efficient stirring, and magnesium oxide deposition or nonuniformity is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of silicon steel production equipment, in particular to a coating machine liquid receiving stirring tank. Background Art

[0002] The coating machine is a special equipment for coating the strip with magnesium oxide isolation coating to prevent the strip from sticking to each other during high-temperature annealing during the production process of oriented silicon steel. When the coating machine is working, the lower coating roller dips the magnesium oxide coating liquid in the liquid receiving tank to coat the lower surface of the strip. The existing coating machine liquid receiving tank has no stirring function. Since magnesium oxide is slightly soluble in water, the magnesium oxide coating liquid is a suspension. The magnesium oxide in the coating liquid in the liquid receiving tank will gradually deposit at the bottom of the liquid receiving tank, resulting in uneven coating on the lower surface of the strip and point-shaped crystal leakage defects. In severe cases, the accumulated magnesium oxide will scratch the coating roller, causing leakage and waste, and the unit is forced to stop production and switch to the coating machine. Utility Model Content

[0003] The utility model aims to provide a coating machine liquid receiving and stirring tank to solve the problem of magnesium oxide coating liquid being deposited in the liquid receiving tank.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A coating machine liquid receiving stirring tank, comprising a tank body, a stirring frame, a cylinder and a control system, wherein the tank body is a semi-cylindrical tank formed by welding double-layer stainless steel, a liquid return port is arranged at the bottom, two overflow ports are symmetrically arranged along the length direction of the tank body at 1 / 3 of the semi-cylindrical surface of the tank body, and ball valves are installed at the ends of the liquid return port and the overflow port; the stirring frame comprises stirring blades, a sleeve and a connecting plate, the stirring blades and the connecting plate are welded on the sleeve, the sleeve is fixed to one side of the tank body by a sliding guide rod, and the sleeve is arranged along the length direction of the tank body, and the connecting plate is connected to the cylinder rod of the cylinder; the cylinder is fixed to the outside of the tank body and connected to the control system through a pneumatic pipeline.

[0006] Preferably, the control system includes an electromagnetic reversing valve, a counter, a throttle valve and a magnetic limit device. The electromagnetic reversing valve is connected to the counter, one end of the electromagnetic reversing valve is connected to the throttle valve through a pipeline, and the other end is connected to the cylinder through a pneumatic pipeline. The magnetic limit device is connected to the cylinder to adjust the cylinder stroke.

[0007] Preferably, the sliding guide rod is made of a chrome-plated alloy material with a smooth surface, its installation position is higher than the overflow port of the tank body, and protective sleeves are installed at the sliding parts at both ends.

[0008] Preferably, the stirring blade is made of stainless steel with a thickness of 4 mm. The shape of the stirring blade is the same as the curvature of the bottom of the tank body, and a 3 mm gap is left between the bottom of the stirring blade and the bottom of the tank body.

[0009] Preferably, the stirring blades are evenly and equidistantly distributed along the length of the tank body.

[0010] Preferably, the connecting plate is made of 10 mm thick stainless steel, and ribs are welded at the remaining positions for reinforcement.

[0011] Preferably, the tank body, stirring frame and sliding guide rod are all detachably connected to facilitate regular maintenance.

[0012] Beneficial effects achieved by the utility model:

[0013] (1) The cylinder drives the connecting plate to drive the sleeve to reciprocate at a uniform speed in the tank along the length direction of the tank body, so as to prevent the magnesium oxide in the coating liquid in the tank body from gradually depositing at the bottom of the receiving tank, thereby preventing uneven coating on the lower surface of the strip and point-shaped crystal leakage defects;

[0014] (2) The electromagnetic reversing valve, counter, throttle valve and magnetic limit device are combined with the control cylinder to realize the control of the stirring direction, stirring frequency, stirring speed and stirring stroke, so as to achieve efficient stirring and avoid magnesium oxide deposition or unevenness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the structural front view of the utility model;

[0016] Figure 2 This is a structural diagram of the stirring frame of the utility model;

[0017] Figure 3 This is a diagram showing the connection relationship between the connecting plate and the cylinder of the stirring frame of the utility model;

[0018] Figure 4 This is a connection diagram between the cylinder and the control system of the utility model.

[0019] Explanation of the reference numerals: 1. tank body; 10. liquid return port; 11. overflow port; 2. stirring frame; 21. stirring blade; 22. sleeve; 23. connecting plate; 3. cylinder; 4. control system; 41. electromagnetic reversing valve; 42. counter; 43. throttle valve; 44. magnetic limit device; 5. sliding guide rod; 6. protective cover. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1-2As shown, a coating machine liquid receiving stirring tank comprises a tank body 1, a stirring frame 2, a cylinder 3 and a control system 4. The tank body 1 is a semi-cylindrical tank welded with double-layer stainless steel, and a DN65 liquid return port 10 is arranged at the bottom thereof for the reflux of the coating liquid in the tank; at 1 / 3 of the semi-cylindrical surface of the tank body, two DN65 overflow ports 11 are symmetrically arranged along the length direction of the tank body to facilitate the overflow of the coating liquid; ball valves are installed at the ends of the liquid return port 10 and the overflow port 11 to facilitate the adjustment of the liquid level in the receiving liquid tank when the coating machine is working; the stirring frame 2 comprises a stirring blade 21, a sleeve 22 and a connecting plate 23, the stirring blade 21 and the connecting plate 23 are welded on the sleeve 22, the sleeve 22 is fixed in the tank body 1 by a sliding guide rod 5, and the sleeve 22 is arranged along the length direction of the tank body 1, as shown in FIG. Figure 3 As shown, the sleeve 22 is located at the left end of the tank body 1, and the sliding guide rod 5 is made of a chrome-plated alloy with a smooth surface. Its installation position is higher than the overflow port 11 of the tank body, and protective sleeves 6 are installed at the sliding parts at both ends to prevent the coating liquid from splashing during operation. The connecting plate 23 is connected to the cylinder rod of the cylinder 3; the connecting plate is made of 10mm thick stainless steel, and the remaining parts are welded with ribs to ensure its connection strength; the cylinder 3 is fixed on the outside of the tank body 1 and connected to the control system 4 through a pneumatic pipeline; the control system controls the cylinder to drive the sleeve of the stirring frame to perform uniform reciprocating motion in the tank to achieve stirring of the coating liquid.

[0022] like Figure 4 As shown, the control system 4 includes an electromagnetic reversing valve 41, a counter 42, a throttle valve 43 and a magnetic limit device 44, the electromagnetic reversing valve 41 is connected to the counter 42, one end of the electromagnetic reversing valve 41 is connected to the throttle valve 43 through a pipeline, and the other end is connected to the cylinder 3 through a pneumatic pipeline, and the magnetic limit device 44 is connected to the cylinder 3; the electromagnetic reversing valve is used to realize the reciprocating motion of the stirring frame, and the switching time of the electromagnetic reversing valve is adjusted by setting different time values ​​for the counter to control the stirring frequency; the throttle valve adjusts the stirring speed by controlling the gas flow, and the magnetic limit device controls the stirring stroke. The electromagnetic reversing valve, the counter, the throttle valve and the magnetic limit device are combined to realize efficient stirring to avoid magnesium oxide deposition or unevenness.

[0023] The stirring blade 21 is made of 4mm thick stainless steel. The shape of the stirring blade 21 is the same as the curvature of the bottom of the tank body 1, so that it can fit well with the tank body during operation. At the same time, a 3mm gap is left between the bottom of the stirring blade 21 and the bottom of the tank body to prevent the stirring blade 21 from directly rubbing against the tank body 1 and affecting the stability of the entire stirring device. The stirring blades 21 are evenly and equidistantly distributed along the length direction of the tank body 1 to ensure that all areas of the bottom of the tank body can be covered by stirring during the stirring process without leaving any dead areas.

[0024] In the entire stirring device of the utility model, the tank body 1, the stirring frame 2 and the sliding guide rod 5 are all detachably connected to each other, which is convenient for regular maintenance.

Claims

1. A coating machine liquid receiving stirring tank, characterized in that: The invention comprises a tank body (1), a stirring frame (2), a cylinder (3) and a control system (4). The tank body (1) is a semi-cylindrical tank formed by welding double-layer stainless steel. A liquid return port (10) is arranged at the bottom of the tank body (1). Two overflow ports (11) are symmetrically arranged at 1 / 3 of the semi-cylindrical surface of the tank body (1) along the length direction of the tank body (1). Ball valves are installed at the ends of the liquid return port (10) and the overflow port (11). The stirring frame (2) comprises a stirring blade (21), a sleeve (22) and a connecting plate (23). The stirring blade (21) and the connecting plate (23) are welded on the sleeve (22). The sleeve (22) is fixed to one side of the tank body (1) through a sliding guide rod (5). The sleeve (22) is arranged along the length direction of the tank body (1). The connecting plate (23) is connected to the cylinder rod of the cylinder (3). The cylinder (3) is fixed to the outside of the tank body (1) and connected to the control system (4) through a pneumatic pipeline.

2. A coating machine liquid receiving stirring tank according to claim 1, characterized in that: The control system (4) comprises an electromagnetic reversing valve (41), a counter (42), a throttle valve (43) and a magnetic limit device (44); the electromagnetic reversing valve (41) is connected to the counter (42); one end of the electromagnetic reversing valve (41) is connected to the throttle valve (43) via a pipeline, and the other end is connected to the cylinder (3) via a pneumatic pipeline; and the magnetic limit device (44) is connected to the cylinder (3).

3. A coating machine liquid receiving stirring tank according to any one of claims 1 or 2, characterized in that: The sliding guide rod (5) is made of a chrome-plated alloy with a smooth surface. Its installation position is higher than the overflow port (11) of the tank body (1), and protective sleeves (6) are installed at the sliding parts at both ends.

4. A coating machine liquid receiving stirring tank according to claim 3, characterized in that: The stirring blade (21) is made of stainless steel and has a thickness of 4 mm. The shape of the stirring blade (21) is the same as the curvature of the bottom of the tank body (1), and a gap of 3 mm is left between the bottom of the stirring blade (21) and the bottom of the tank body (1).

5. A coating machine liquid receiving stirring tank according to claim 4, characterized in that: The stirring blades (21) are evenly and equidistantly distributed along the length direction of the tank body.

6. A coating machine liquid receiving stirring tank according to claim 1, characterized in that: The connecting plate (23) is made of 10 mm thick stainless steel, and ribs are welded to the remaining parts for reinforcement.

7. The coating machine liquid receiving stirring tank according to claim 3, characterized in that: The tank body (1), the stirring frame (2) and the sliding guide rod (5) are all detachably connected to each other.

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