Double-quantity nozzle for controlling cooling quantity

Abstract

The utility model discloses a double-quantity nozzle for controlling cooling quantity, which comprises a nozzle body, a step hole arranged in the nozzle body and a taper hole positioned below the step hole, and a spray outlet is arranged at the end part of the taper hole; a spiral body and a piston arranged on the spiral body in a sliding mode are installed in the stepped hole, a spiral groove is formed in the spiral body, the piston is sleeved with a spring abutting against the spiral body, a hoop used for limiting the piston is arranged in the stepped hole, and the size of a flux gap between the piston and the taper hole is adjusted when the piston slides relative to the spiral body; a circulation hole and a water plug embedded in the circulation hole are formed in the middle of the piston, a first water inlet hole located above the water plug and a second water inlet hole located below the water plug are formed in the piston, the first water inlet hole is located above the spiral body, and the second water inlet hole is located below the spiral body; a spraying hole communicated with the circulating hole is formed in the end part of the piston; the atomization amount and the granularity can be adjusted by adjusting the water pressure under the condition that the nozzle does not need to be replaced.

Description

Technical Field

[0001] This utility model relates to the field of cooling water nozzle technology, and in particular to a dual-volume nozzle for controlling the amount of cooling. Background Technology

[0002] In the controlled cooling process of hot rolling, the controlled cooling equipment needs to control the nozzles to provide water jets with different atomization degrees and amounts based on the actual temperature and billet type of the hot-rolled billet to achieve the process requirement of controlling the rated temperature drop. Generally, when cooling hot-rolled billets of different types and actual temperatures, the atomization amount and particle size are mainly adjusted by changing the entire nozzle structure. Multiple types of nozzle structures need to be prepared for replacement, and in actual operation, the machine needs to be stopped to change the nozzle structure, resulting in a reduction in the efficiency of the cooling process. Utility Model Content

[0003] (a) Technical issues

[0004] The purpose of this invention is to provide a dual-volume nozzle for controlling the cooling amount, solving the problem in the prior art that the entire nozzle structure needs to be replaced when adjusting the cooling atomization amount and atomization particle size of hot-rolled steel billets to adapt to different models and actual temperatures.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A dual-volume nozzle for controlling cooling volume includes a nozzle body, a stepped hole formed within the nozzle body, and a conical hole located below the stepped hole. The end of the conical hole has a spray outlet. A helical body and a piston slidably mounted on the helical body are installed within the stepped hole. The helical body has a helical groove. A spring is fitted onto the piston and abuts against the helical body. A clamp for limiting the piston is provided within the stepped hole. The piston adjusts the flow gap between itself and the conical hole as it slides relative to the helical body. A flow hole and a water-blocking plug are formed in the middle of the piston. A first water inlet is formed above the water-blocking plug, and a second water inlet is formed below the water-blocking plug. The first water inlet is located above the helical body, and the second water inlet is located below the helical body. A spray hole communicating with the flow hole is formed at the end of the piston.

[0008] Preferably, there are four first water inlet holes, which are evenly distributed along the circumference of the piston.

[0009] Preferably, there are three second water inlets, which are arranged in a spiral pattern along the circumference of the piston, and the water outlet of the second water inlet is inclined toward the spray hole.

[0010] Preferably, the piston has a sealing groove and a sealing ring disposed in the sealing groove, and the sealing ring is in contact with the inner wall of the stepped hole.

[0011] Preferably, the nozzle body is provided with a threaded portion for fastening connection.

[0012] Preferably, when the piston floats relative to the nozzle body, the equivalent inner diameter of the spray outlet is in the range of 2mm to 15mm.

[0013] Preferably, when the water pressure borne by the piston is in the range of 0.2MPa to 0.7MPa, the equivalent inner diameter of the spray outlet is in the range of 2mm to 15mm.

[0014] Preferably, when the water pressure borne by the piston is in the range of 0.8MPa to 1.5MPa, the equivalent inner diameter of the spray outlet is in the range of 2mm to 6mm.

[0015] (III) Beneficial Effects

[0016] By setting a floating piston inside the nozzle body, the water pressure applied to the piston causes the piston to have different displacements relative to the nozzle body, thereby adjusting the size of the flow gap between the piston and the conical orifice. This adjusts the amount of water entering the first and second water inlets, allowing the atomization amount and particle size sprayed from the spray orifice to be adjusted according to the size of the flow gap. Thus, the atomization amount and particle size can be adjusted by adjusting the water pressure without replacing the nozzle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model under high flow conditions;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model under low flow conditions;

[0019] Figure 3 This is a schematic diagram of the distribution structure of the second water inlet hole in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram showing the relationship between water volume and equivalent spray inner diameter in the low water pressure stage according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram showing the relationship between the diameter of water particles and the equivalent spray inner diameter during the water pressure stage in an embodiment of this utility model.

[0022] Figure 6This is a schematic diagram showing the relationship between water volume and equivalent spray inner diameter in the high water pressure stage of this utility model embodiment;

[0023] Figure 7 This is a schematic diagram showing the relationship between the diameter of water particles and the equivalent spray inner diameter in the high water pressure stage of this utility model embodiment;

[0024] exist Figures 1 to 7 In the diagram, the correspondence between component names or lines and the drawing numbers is as follows:

[0025] Nozzle body 1, stepped hole 101, conical hole 102, spray outlet 103, threaded part 104, spiral body 2, spiral groove 20, piston 3, flow hole 31, first water inlet hole 32, second water inlet hole 33, spray hole 34, water plug 35, sealing groove 36, sealing ring 37, spring 4, clamp 5, flow gap 6. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] See Figures 1-3 As shown, an embodiment of this utility model proposes a dual-volume nozzle for controlling cooling volume, integrated into a cooling process production line. Specifically, several dual-volume nozzles can be integrated during use. It includes a nozzle body 1, a stepped hole 101 formed within the nozzle body 1, and a conical hole 102 located below the stepped hole 101. The end of the conical hole 102 is provided with a spray outlet 103, which is the outlet for ultimately spraying atomized water towards the hot-rolled steel billet. Specifically, a spiral body 2 and a piston 3 slidably mounted on the spiral body 2 are installed within the stepped hole 101. The spiral body 2 has a spiral groove 20. A spring 4 is fitted onto the piston 3, abutting against the spiral body 2. A clamp 5 is provided within the stepped hole 101 to limit the piston 3. When the piston 3 slides relative to the spiral body 2, the flow gap 6 between the piston 3 and the conical hole 102 is adjusted. After the piston 3 is limited by the clamp 5, it can float relative to the spiral body 2 under the action of the spring 4. This allows the flow gap 6 between the piston 3 and the inner wall of the conical hole 102 to change with the movement of the piston 3. When the flow gap 6 is small, the atomized particles flowing from the spray outlet 103 are small in size and have a small atomization volume; when the flow gap 6 is large, the atomized particles are large in size and have a large atomization volume. Adjusting the piston 3 only requires controlling the water pressure to push it to float, avoiding the need to replace nozzles and adapting to the cooling process requirements of hot-rolled steel billets under various models and temperature conditions.

[0028] The atomization point is located at the end of piston 3. Specifically, a flow hole 31 and a water-blocking plug 35 are provided in the middle of piston 3. A first water inlet 32 ​​is provided above the water-blocking plug 35, and a second water inlet 33 is provided below the water-blocking plug 35. The first water inlet 32 ​​is located above the spiral body 2, and the second water inlet 33 is located below the spiral body 2. Cooling water entering the flow hole 31 flows into the spiral body 2 through the first water inlet 32. The water flow is accelerated in a spiral shape through the spiral groove 20. After flowing out of the spiral groove 20, part of the water flows into piston 3 through the second water inlet 33. A spray hole 34 communicating with the flow hole 31 is provided at the end of piston 3. After the cooling water is accelerated and the flow direction is adjusted, atomization is formed at the spray hole 34. The atomized particles are sprayed outward from the spray outlet 103 after passing through the spray hole 34; the other part flows through the flow gap 6 to the spray outlet 103 and is sprayed outward directly.

[0029] In order to increase the water flow rate from the flow hole 31 to the spiral body 2, the number of the first water inlet holes 32 is 4, and they are evenly distributed along the circumference of the piston 3.

[0030] The water flowing into the piston 3 through the second water inlet 33 is atomized at the spray hole 34. To improve the atomization effect, there are three second water inlets 33, which are arranged in a spiral pattern along the circumference of the piston 3. The water outlet of the second water inlet 33 is inclined towards the spray hole 34, which further makes the water flowing from the second water inlet 33 to the spray hole 34 have a spiral flow direction, thereby improving the atomization effect. On the one hand, the water flowing into the spray hole 33 hits the hole wall of the spray hole 34 to form atomized particles, and on the other hand, the impact between the water flows also forms atomized particles. Finally, after atomization, it is sprayed outward from the spray outlet 103.

[0031] In order to ensure a sealing effect when the piston 3 and the nozzle body 1 move relative to each other, a sealing groove 36 and a sealing ring 37 are provided on the piston 3. The sealing ring 37 is in contact with the inner wall of the stepped hole 101.

[0032] Meanwhile, the nozzle body 1 is provided with a threaded part 104 for fastening connection, and the assembly of the entire dual nozzle is realized through the threaded part 104.

[0033] like Figures 4 to 7As shown, specifically, when adjusting the water pressure to allow the piston 3 to float and adjust the flow gap 6, the effective inner diameter of the spray outlet 103 can ultimately range from 2mm to 15mm. Specifically, when the water pressure on the piston 3 is between 0.2MPa and 0.7MPa, the effective inner diameter of the spray outlet 103 is between 2mm and 15mm. This means that at lower water pressures, the flow gap 6 is larger, resulting in a larger spray volume and larger water mist particles, suitable for large-area cooling processes. Conversely, when the water pressure on the piston 3 is between 0.8MPa and 1.5MPa, the effective inner diameter of the spray outlet 103 is between 2mm and 6mm. This means that at higher water pressures, the flow gap 6 is smaller, the spray volume is reduced, and small water mist particles are primarily formed, suitable for refined, small-area cooling processes. Therefore, by adjusting the water pressure, the flow gap 6 can be infinitely adjusted. The water pressure can be preset according to the specific requirements of the hot-rolled steel billet cooling process, allowing the dual-volume water spray to adapt to the atomization volume and water mist requirements of the current cooling process, avoiding the need to change the nozzle structure.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual-volume nozzle for controlling cooling volume, characterized in that: It includes a nozzle body (1), a stepped hole (101) opened in the nozzle body (1), and a conical hole (102) located below the stepped hole (101). The end of the conical hole (102) is provided with a spray outlet (103). A spiral body (2) and a piston (3) slidably mounted on the spiral body (2) are installed in the stepped hole (101). A spiral groove (20) is provided on the spiral body (2). A spring (4) is fitted on the piston (3) and abuts against the spiral body (2). A clamp (5) for limiting the piston (3) is provided in the stepped hole (101). When the piston (3) slides relative to the spiral body (2), the size of the flow gap (6) between the piston (3) and the conical hole (102) is adjusted. The piston (3) has a flow hole (31) in the middle and a water plug (35) embedded in the flow hole (31). The piston (3) has a first water inlet (32) above the water plug (35) and a second water inlet (33) below the water plug (35). The first water inlet (32) is located above the spiral body (2) and the second water inlet (33) is located below the spiral body (2). The piston (3) has a spray hole (34) at its end that communicates with the flow hole (31).

2. A dual-volume nozzle for controlling cooling volume according to claim 1, characterized in that: The number of the first water inlet holes (32) is 4, and they are evenly distributed along the circumference of the piston (3).

3. A dual-volume nozzle for controlling cooling volume according to claim 2, characterized in that: There are three second water inlet holes (33), which are arranged in a spiral pattern along the circumference of the piston (3). The water outlet of the second water inlet hole (33) is inclined toward the spray hole (34).

4. A dual-volume nozzle for controlling cooling volume according to claim 3, characterized in that: The piston (3) has a sealing groove (36) and a sealing ring (37) disposed in the sealing groove (36), and the sealing ring (37) is in contact with the inner wall of the stepped hole (101).

5. A dual-volume nozzle for controlling cooling volume according to claim 4, characterized in that: The nozzle body (1) is provided with a threaded part (104) for fastening connection.

6. A dual-volume nozzle for controlling cooling volume according to claim 5, characterized in that: When the piston (3) floats relative to the nozzle body (1), the equivalent inner diameter of the spray outlet (103) ranges from 2 mm to 15 mm.

7. A dual-volume nozzle for controlling cooling volume according to claim 6, characterized in that: When the water pressure carried by the piston (3) is in the range of 0.2MPa to 0.7MPa, the equivalent inner diameter of the spray outlet (103) is in the range of 2mm to 15mm.

8. A dual-volume nozzle for controlling cooling volume according to claim 6, characterized in that: When the water pressure carried by the piston (3) is in the range of 0.8MPa to 1.5MPa, the equivalent inner diameter of the spray outlet (103) is in the range of 2mm to 6mm.

Images