Cooling device special for rolling mill
By designing a device that reduces the number of water spray holes and intermittently opens and closes the valve, the problem of the turbid water flow rate in the finishing mill being unable to be adjusted was solved, thus achieving resource conservation and improved cooling effect.
Patent Information
- Application Number
- CN202422981963.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-04
AI Technical Summary
The existing finishing mill turbid water flow cannot be adjusted differently, resulting in energy waste and high production costs.
A special cooling device for rolling mill is designed, including nozzles and valves. The number of water spray holes is reduced and the radius is reduced. It is also equipped with an intermittent opening and closing control device to adjust the amount of turbid circulating water sprayed by the intermittent opening and closing of the valve.
It achieves precise regulation of turbid circulating water, saves resources, reduces production costs, and improves cooling effect.
Smart Images
Figure CN223440701U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to rolling mill cooling technical field especially relates to a special cooling device of rolling mill. BACKGROUND
[0002] In the wire rolling equipment, the finishing mill is the key equipment. In the rolling process, the finishing mill must use turbid ring water for cooling. The cooling position is divided into two kinds: one case is that the finishing mill roll box roll shaft installs the roll ring, that is, the rolling state. At this time, the turbid ring water cooling position is the roll ring, which plays a role in reducing the temperature of the roll ring and the roll shaft. The other case is that the roll box roll shaft installs the empty protection cap. At this time, the turbid ring water cooling position is the roll shaft empty protection cap, which plays a role in reducing the temperature of the roll shaft empty protection cap and the roll shaft. The Simak finishing mill includes 1# to 10# roll boxes, that is, a total of 10 roll boxes. However, in the rolling process, according to the different specifications of the rolled piece, not all 10 roll boxes are in the rolling state. The unused roll box is in the empty state. At this time, since the roll box roll shaft installs the empty protection cap, the turbid ring cooling water flow requirement is not high, but it is impossible to change the turbid ring water flow of each frame differently, thereby causing energy waste and high production cost. SUMMARY
[0003] The utility model aims at providing a special cooling device of rolling mill to solve the problem of excessive turbid ring water quantity of the existing finishing mill water jacket spray, which leads to energy waste and high production cost. The technical scheme adopted by the utility model is as follows:
[0004] A special cooling device of rolling mill, comprising a water pipe, a nozzle and a base, the nozzle is provided with an inner hole cavity, the base is provided with a cold water flow channel, one end of the inner hole cavity and one end of the cold water flow channel are connected through the water pipe, the outer surface of the nozzle is provided with a spraying inclined surface, a plurality of water injection through holes communicating with the inner hole cavity are processed on the spraying inclined surface, the other end of the cold water flow channel is connected with the water outlet of the roll box panel, and the water pipe is provided with a valve.
[0005] Further, the number of water injection through holes is three.
[0006] Further, the radius of the water injection through hole is 2mm.
[0007] Further, the intermittent opening and closing control device is further included, the valve is a solenoid valve, the intermittent opening and closing control device includes an AC contactor, a first time relay, a second time relay, an intermediate relay and a manual switch, the power connection end of the valve and the normally open coil of the AC contactor are connected in series to form a first branch, the manual switch, the normally closed contact of the intermediate relay and the first time relay are connected in series to form a second branch, the normally open contact of the first time relay and the second time relay are connected in series to form a third branch, the AC contactor is connected in parallel at the two ends of the second time relay to form a fourth branch, the normally open contact of the second time relay and the intermediate relay are connected in series to form a fifth branch, and the two ends of the first branch, the second branch, the third branch and the fifth branch are connected in parallel to the zero line and the live line of the power supply.
[0008] Compared with the prior art, the utility model has the beneficial effects that:
[0009] 1. The utility model rethinks the structure of the nozzle, reduces the number of water injection through holes to three, and reduces the radius to 2mm, which can meet the needs of turbid ring water injection in the rolling state, and the valve is installed on the water pipe, which can further adjust the injection amount of turbid ring water, and in the air passing state, the injection of turbid ring water can meet the needs, which greatly saves resources and reduces production cost.
[0010] 2. The intermittent opening and closing control device can control the intermittent opening and closing of the valve, the opening time and the closing time of the valve core can be adjusted by adjusting the setting time of the first time relay and the second time relay, the valve is set to intermittent opening and closing, which not only can save turbid ring water resources, but also has better cooling effect. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the structural schematic diagram of the utility model;
[0012] Figure 2 It is the schematic diagram of the cooling of the utility model;
[0013] Figure 3 It is the schematic diagram of the existing water jacket;
[0014] Figure 4 It is the schematic diagram of two existing water jacket cooling roller rings or machine caps;
[0015] Figure 5 It is the circuit diagram of the intermittent opening and closing control device.
[0016] In the figure, 1. base, 11. cold water flow channel, 2. water pipe, 3. nozzle, 31. inner hole cavity, 32. injection slope, 33. water injection through hole, 4. valve, 5. roller ring or machine cap, 6. roller box roller shaft, 7. existing water jacket, 71. water injection hole, SA. manual switch, KT1. first time relay, KT2. second time relay, KM. AC contactor, KA. intermediate relay, QS. power switch. DETAILED DESCRIPTION
[0017] To make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will describe the utility model through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and not to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0018] The connection referred to in the utility model is divided into fixed connection and detachable connection, the fixed connection is namely non-detachable connection including but not limited to edge folding connection, rivet connection, bonding connection and welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to bolt connection, buckle connection, pin connection and hinge connection and other conventional detachable modes, when not explicitly limited to specific connection mode, at least one connection mode to realize the function can be found in the existing connection mode, and the person skilled in the art can select it according to the needs. For example: fixed connection selects welding connection, detachable connection selects bolt connection.
[0019] The utility model will be further described in detail in the following with reference to the drawings, the following embodiments are the explanation of the utility model, and the utility model is not limited to the following embodiments.
[0020] Embodiment: as Figures 1-5 Shown, a special cooling device for rolling mill, including water pipe 2, nozzle 3 and base 1, nozzle 3 is equipped with inner hole cavity 31, base 1 is equipped with cold water flow channel 11, one end of inner hole cavity 31 is connected with one end of cold water flow channel 11 through water pipe 2, the outer surface of nozzle 3 is equipped with injection slope 32, and a plurality of water injection through holes 33 communicating with the inner hole cavity 31 are processed on the injection slope 32, the other end of the cold water flow channel 11 is connected with the water outlet of the roller box panel, and the water pipe 2 is equipped with valve 4.
[0021] The number of water injection through holes 33 is three.
[0022] The radius of water injection through hole 33 is 2mm.
[0023] Figure 3 And Figure 4 The structure diagram of the existing water jacket 7 and the schematic diagram of the existing water jacket 7 cooling roller ring or machine cap 5 and roller box roller shaft 6 are given,
[0024] The turbid ring water required by the finishing mill is sprayed by the existing water jacket 7, the roll box panel is a key component of the roll box of the finishing mill, and the existing water jacket 7 is directly installed on the roll box panel, and there is a water outlet hole on the panel, the water outlet hole is communicated with the water inlet hole of the water jacket, the turbid ring cooling water enters from the inlet of the cooling water pipe of the finishing mill cone box (cone box: a key component of the finishing mill), and reaches the existing water jacket 7 after passing through the water outlet hole of the roll box panel, the existing water jacket 7 has 8 water spraying holes 71, and the radius of each hole is 2.5 mm, the turbid ring cooling water is sprayed onto the roll ring or the cap 5 through the water spraying holes 71 of the existing water jacket 7, and finally the purpose of cooling is achieved.
[0025] The existing water jacket 7 is provided with 8 water spraying holes 71, and the radius of the water spraying hole 71 is 2.5 mm. It is found in application that the turbid ring water sprayed by the 8 water spraying holes 71 is too much, especially in the empty passing state, the turbid ring water sprayed by the existing water jacket 7 is much higher than required, thereby causing resource waste and high production cost. According to the actual conditions of the factory and the needs of the production site, a scheme is formulated, a drawing is designed and revised, and a special cooling device, i.e. a water jacket, is independently manufactured according to the final scheme and drawing. By replacing the existing water jacket 7 with the water jacket, the size of the cooling water flow of each frame of the finishing mill can be changed, thereby achieving the purposes of energy saving and reducing production and operation cost, and achieving the substantial effects of short use time, low investment and quick effect.
[0026] The utility model redesigns the structure of the nozzle 3, reduces the number of water spraying through holes 33 to three, and reduces the radius to 2mm, which can meet the needs of turbid ring water spraying in the rolling state, and the valve is additionally installed on the water pipe 2, which can further adjust the spraying amount of turbid ring water, and in the empty passing state, the spraying of turbid ring water can meet the needs, which greatly saves resources and reduces production cost.
[0027] It also includes an intermittent opening and closing control device, the valve 4 is an electromagnetic valve, the intermittent opening and closing control device includes an alternating current contactor KM, a first time relay KT1, a second time relay KT2, an intermediate relay KA and a manual switch SA, the power connection end of the valve 4 and the normally open coil of the alternating current contactor KM are connected in series to form a first branch, the manual switch SA, the normally closed contact of the intermediate relay KA and the first time relay KT1 are connected in series to form a second branch, the delay closing contact of the first time relay KT1 and the second time relay KT2 are connected in series to form a third branch, the alternating current contactor KM is connected in parallel at the two ends of the second time relay KT2 to form a fourth branch, the delay closing contact of the second time relay KT2 and the intermediate relay KA are connected in series to form a fifth branch, and the two ends of the first branch, the second branch, the third branch and the fifth branch are connected in parallel to the zero line and the live line of the power supply.
[0028] When the power switch QS and the manual switch SA are closed, the time relay KT1 is energized and the timing starts. When the setting time of the first time relay KT1 is reached, the delay closing contact of the first time relay KT1 is closed, the AC contactor KM is energized, the valve 4 is energized, the valve core is opened, and the second time relay KT2 is also energized. When the setting time of the second time relay KT2 is reached, the delay closing contact of the second time relay KT2 is closed, the intermediate relay KA is energized, the normally closed contact of the intermediate relay KA is opened, the first time relay KT1 is de-energized and released, the contact is opened, the second time relay KT2, the AC contactor KM and the intermediate relay KA are all de-energized, the valve 4 is de-energized, the valve core is closed, but the manual switch SA is still in the closed state, so the first time relay KT1 enters the timing state again. When the timing time is reached, the contact of the first time relay KT1 is closed, the valve 4 is energized again, and the valve core is opened. The intermittent opening and closing of the valve 4 does not change the intensity of the turbid ring water injection, and is better than adjusting the flow of the turbid ring water, the cooling roller ring or the cap 5 and the roller box roller shaft 6. The intermittent opening and closing control device can control the intermittent opening and closing of the valve 4, the opening time and the closing time of the valve core of the valve 4 can be adjusted by adjusting the setting time of the first time relay KT1 and the second time relay KT2, and the valve 4 is set to intermittent opening and closing. The turbid ring water resources can be saved, and the cooling effect is better.
[0029] The above examples are only exemplary descriptions of the present application, and do not limit the protection scope thereof. Those skilled in the art can also make changes to the parts thereof, as long as the changes do not exceed the spirit and essence of the present application, and are within the protection scope of the present application.
Claims
1. A special cooling device for a rolling mill, characterized in that: The invention comprises a water pipe (2), a nozzle (3) and a base (1), wherein the nozzle (3) is provided with an inner cavity (31), the base (1) is provided with a cold water flow channel (11), one end of the inner cavity (31) is connected to one end of the cold water flow channel (11) through the water pipe (2), an injection slope (32) is provided on the outer surface of the nozzle (3), a plurality of water injection holes (33) communicating with the inner cavity (31) are machined on the injection slope (32), the other end of the cold water flow channel (11) is connected to the water outlet of the roller box panel, and a valve (4) is provided on the water pipe (2).
2. A rolling mill cooling device according to claim 1, characterized in that: The number of the water spraying through holes (33) is three.
3. A rolling mill cooling device according to claim 2, characterized in that: The radius of the water spraying hole (33) is 2 mm.
4. A rolling mill cooling device according to any one of claims 1 to 3, characterized in that: The invention also includes an intermittent opening and closing control device, wherein the valve (4) is a solenoid valve, and the intermittent opening and closing control device includes an AC contactor (KM), a first time relay (KT1), a second time relay (KT2), an intermediate relay (KA) and a manual switch (SA). The power connection end of the valve (4) and the normally open coil of the AC contactor (KM) are connected in series to form a first branch, the manual switch (SA), the normally closed contact of the intermediate relay (KA) and the first time relay (KT1) are connected in series in sequence to form a second branch, the delayed closing contact of the first time relay (KT1) and the second time relay (KT2) are connected in series to form a third branch, the AC contactor (KM) is connected in parallel to both ends of the second time relay (KT2) to form a fourth branch, the delayed closing contact of the second time relay (KT2) and the intermediate relay (KA) are connected in series to form a fifth branch, and both ends of the first branch, the second branch, the third branch and the fifth branch are connected in parallel to the neutral line and the live line of the power supply.