CN220346866U - Purging device for preheating straightener - Google Patents

Abstract

The utility model relates to the technical field of iron and steel metallurgy, and discloses a purging device for a preheating straightener. The utility model is arranged on one side of the inlet end of the preheating straightening machine and includes a positioning block, a supporting guide rod, an adjusting component and a blowing component. The positioning block is fixedly connected to the supporting side beam of the preheating straightening machine, and the supporting guide rod is longitudinally Fixedly connected to the positioning block; the adjusting component includes multiple groups, which slide and lift from top to bottom and are connected to the support guide rod; the blowing component includes multiple groups, which are respectively fixedly connected to the adjusting component; the adjusting component can drive the blowing component along the Rotate the support guide rod axially, or drive the blowing assembly to adjust the pitch angle along the vertical plane. The purging device of this utility model can adjust the spatial position of the blowing component accordingly by adjusting the component, so as to fully cover the surface of the steel plate, and keep the pressure of the sprayed air flow basically consistent, realize the purging operation of the steel plate without dead corners, and improve the surface of the steel plate. the quality of.

Description

A purging device for preheating straightening machines

Technical field

The utility model relates to the technical field of iron and steel metallurgy, and in particular to a purging device for preheating a straightening machine.

Background technique

The preheating straightening machine is mainly used to straighten the rolled large plate cylinder billet before cooling, so that the large plate billet will have good shape and even cooling during ultra-fast cooling. However, the existing steel billet large plates mainly have the following problems in the production process of the preheating straightening machine: (1) There are residual water droplets on the surface of the steel plate entering the entrance of the preheating straightening machine, and it is easy to be directly passed through the preheating straightening machine on the surface of the steel plate. Watermarks are produced, causing problems with the surface quality of the steel plate; (2) Secondary iron oxide is easily produced on the surface of the steel plate, and sporadic pits are formed on the head of the steel plate after preheating and straightening, which affects the surface quality of the product and may lead to the suspension of production in severe cases.

Utility model content

Purpose of the invention: The purpose of this utility model is to provide a purging device for a preheating straightening machine. By setting a purging device on one side of the preheating straightening machine, the steel plate surface passing through the preheating straightening machine can be cleaned. High-pressure air blowing solves quality problems on the surface of steel plates.

Technical solution: a purging device for a preheating straightening machine according to the present utility model. The purging device is fixedly arranged on one side of the inlet end of the preheating straightening machine and includes:

Positioning block, the positioning block is fixedly connected to the supporting side beam of the preheating straightening machine;

Support guide rod, the support guide rod is longitudinally fixedly connected to the positioning block;

Adjustment components, the adjustment components include multiple groups, sliding and lifting from top to bottom and connected to the support guide rod;

The blowing assembly includes multiple groups, each of which is fixedly connected to the adjusting assembly; the adjusting assembly can drive the blowing assembly to rotate along the axial direction of the support guide rod, or drive the blowing assembly to move along the vertical plane. Pitch angle adjustment.

Preferably, the adjustment assembly includes a lifting slide block and an angle adjusting slide block;

The two ends of the lifting slide block are provided with vertically arranged through holes, the two ends of the lifting slide block are provided with first expansion and contraction joints connected to the through holes, and the two ends of the lifting slide block are provided with first expansion and contraction joints that penetrate the through holes. There are connecting screw holes on both sides of the plate body, a threaded connecting rod is connected in the connecting screw hole, and an adjusting handle is fixedly connected to one end of the threaded connecting rod;

One end of the angle-adjusting slider is provided with a through hole, and its end is provided with a second expansion and contraction joint connected to the through hole, and the end of the angle-adjusting slider is provided with a connection that penetrates the plates on both sides of the second expansion and contraction joint. A screw hole, a threaded connecting rod is connected to the connecting screw hole, and an adjusting handle is fixedly connected to one end of the threaded connecting rod;

Among them, one of the through holes of the lifting slide block is sleeved on the support guide rod, and the other through hole of the lifting slide block is slidably connected to a horizontal connecting rod, and the through hole of the angle adjustment slide block is slidably sleeved on the other end of the horizontal connecting rod. .

Preferably, the support guide rod is provided with scale marks along its length direction;

The horizontal connecting rod is provided with scale marks along its length direction.

Preferably, the other end face of the angle-adjusting slider is provided with an installation slot;

The blowing assembly includes a support sleeve fixedly mounted in the installation slot and a blow pipe slidably connected in the support sleeve. Both ends of the blow pipe are fixedly connected with threaded joints, and one end of the blow pipe passes through a threaded joint. A booster nozzle is fixedly connected.

Preferably, a connection port is fixedly provided on the outer periphery of the tube body of the support sleeve, and a tightening positioning piece is threadedly connected to the connecting port, and the tightening positioning piece can rotate forward or backward.

Preferably, a supercharging flow channel is provided in the supercharging nozzle, and the supercharging flow channel is a tapered flow channel from the inside to the outside along the axial direction.

Preferably, the other end of the blow pipe is connected to an air inlet pipeline, and an air pressure reducing valve and a pneumatic shut-off valve are connected to the air inlet pipeline.

Preferably, thermal detection devices are respectively provided at corresponding positions at the front end of the preheating straightening machine, the tail end of the finishing mill and the rear end of the purge device, and the thermal detection devices are interlocked with the pneumatic shut-off valves respectively.

Compared with the existing technology, the utility model has the following beneficial effects:

The purging device of this utility model can adjust the distance between two adjacent groups of blowing assemblies by adjusting the height and circumferential position of multiple adjusting components on the supporting guide rod; by adjusting the angle slider on the horizontal connecting rod upper circumferential position, thereby adjusting the pitch angle of the blowing assembly, and then adjusting the angle between the front ends of the multiple blowing pipes and the straightening roller plane of the preheated straightening machine; by adjusting the position of the blowing pipes in the support casing, different The lengths of the blow pipes extending out of the support sleeves are different, so that the blowing gas from multiple blowing pipes can fully cover the surface of the steel plate passing through the purging device, and the pressure of the sprayed air flow can be kept basically the same, so that the blowing operation can be carried out without dead corners and without causing any damage to the steel plate. Preheating adversely affects the operation of the straightening machine. Control systems such as pneumatic shut-off valves and thermal detection devices installed in conjunction with the blowing components can realize automatic control of the purging device and reduce air volume and energy consumption.

Description of the drawings

Figure 1 is a schematic diagram of the installation structure of the preheating straightening machine and purging device of the present invention;

Figure 2 is an enlarged structural schematic diagram of the preheating straightening machine and purging device in Figure 1;

Figure 3 is a schematic three-dimensional structural diagram of the purging device in Figure 2;

Figure 4 is a schematic diagram of the three-dimensional structure of the adjustment component in Figure 3;

Figure 5 is a schematic three-dimensional structural diagram of the blowing assembly in Figure 2.

Reference signs:

1. Preheating straightening machine; 11. Straightening roller table; 111. Support side beams; 112. Support rollers; 12. Driving mechanism;

2. Purge device; 21. Positioning block; 22. Support guide rod; 221. Scale mark; 23. Adjustment component; 231. Lifting slider; 2311. Connection screw hole; 2312. First expansion joint; 2313. Through hole; 232, threaded connecting rod; 233, adjusting handle; 234, angle adjustment slider; 2341, second expansion and contraction joint; 2342, installation slot; 235, horizontal connecting rod; 24, blowing component; 241, support Casing; 2411, connection port; 2412, tighten positioning piece; 242, blow pipe; 243, threaded joint; 244, booster nozzle.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings 1-5 of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of the present utility model.

As shown in Figure 1-2, the preheating straightening machine 1 includes a straightening roller table 11 and a driving mechanism 12 that drives the straightening roller table to operate. The driving mechanism 12 can use a conventional drive motor and chain transmission mechanism; the straightening roller The track 11 includes support side beams 111 arranged in parallel on both sides and a plurality of support rollers 112 rotatably connected between the two sets of support side beams 111. The driving mechanism 12 can drive the support rollers 112 to rotate along its axial direction.

As shown in Figure 1-2, the utility model is a purging device for a preheating straightening machine. The purging device 2 is fixedly arranged on the front end of the inlet of the preheating straightening machine 1. Specifically, it can be set on the preheating straightening machine. The front end of the straightening machine 1 and the end of the finishing mill are located 0.8 m away from the inlet end of the preheating straightening machine 1. The surface of the steel plate passing through the finishing mill is washed with high pressure. It can also be directly installed on the side of the inlet end of the preheating straightening machine. On the support side beam 111, the surface of the steel billet entering the preheating straightening machine 1 is directly air washed to remove possible water stains on the surface of the steel plate and reduce surface defects caused by the steel plate entering the preheating straightening machine.

As shown in Figure 3-4, the purging device 2 includes a positioning block 21, a support guide rod 22, an adjustment component 23 and a blowing component 24. The positioning block 21 is fixedly connected to the support side beam 111 of the preheating straightening machine. The guide rod 22 is longitudinally fixedly connected to the positioning block 21, and the support guide rod 22 is provided with a scale mark 221 along its length direction.

The adjustment components 23 include multiple groups, which slide and lift from top to bottom and are connected to the support guide rod 22; each group of adjustment components 23 includes a lifting slide block 231 and an angle-adjusting slide block 234; both ends of the lifting slide block 231 are respectively provided with vertical Through holes 2313 are provided, first expansion and contraction joints 2312 connected to the through holes 2313 are provided at both ends of the lifting slider 231, and connecting screws are provided at both ends of the lifting slider 231 and penetrate the plates on both sides of the first expansion and contraction joints 2312. hole 2311, a threaded connecting rod 232 is connected in the connecting screw hole 2311, and an adjusting handle 233 is fixedly connected to one end of the threaded connecting rod 232; a through hole is provided at one end of the angle-adjusting slider 234, and a through hole is provided at its end to communicate with the through hole The second expansion and contraction joint 2341, and the end of the angle adjustment slider 234 is provided with a connecting screw hole that penetrates the plates on both sides of the second expansion and contraction joint. A threaded connecting rod is connected in the connecting screw hole, and one end of the threaded connecting rod is fixedly connected with Adjustment handle 233. Among them, one of the through holes 2313 of the lifting slider 231 is set on the support guide rod 22, and the tightness of the first expansion and contraction joint 2312 is adjusted by adjusting the adjustment handle 233 at the corresponding end of the lifting slider 231, thereby conveniently realizing the lifting slider. 231 along the support guide rod 22 for lifting and lowering adjustment, horizontal rotation angle adjustment and fixed connection with the support guide rod. A horizontal link 235 is slidably connected in the other through hole 2313 of the lifting slider 231. The tightness of the first expansion joint 2312 can be adjusted by adjusting the adjustment handle 233 at the corresponding end of the lifting slider 231, thereby conveniently adjusting the horizontal link 235. The position in the through hole of the lifting slide block 231 is to adjust the extension length of the horizontal link 235, and also control the rotation angle of the horizontal link 235 along its axial direction and its fixed connection with the lifting slide block 231. The through hole of the angle-adjusting slider 234 is slidably mounted on the other end of the horizontal link 235. The horizontal link 235 is provided with scale marks along its length direction. The adjustment handle 233 at the corresponding end of the angle-adjusting slider 234 is adjusted. The tightness of the expansion and contraction joint 2341 can be adjusted conveniently to adjust the position of the angle-adjusting slider 234 on the horizontal link 235, and also to adjust the rotation angle of the angle-adjusting slider 234 along the horizontal link 235 and with the horizontal link 235. fixed connection. The adjustment component 23 can meet the convenient adjustment of spatial position.

As shown in Figure 4-5, the other end surface of the angle-adjusting slide block 234 is provided with an installation slot 2342. The blowing components 24 include multiple groups, and each group of blowing components 24 is fixedly connected to the adjusting component 23 . The blowing assembly 24 includes a support sleeve 241 fixedly mounted in the installation slot 2342 and a blow pipe 242 slidably connected in the support sleeve. A connection port 2411 is fixedly provided on the outer periphery of the support sleeve 241. The connection port 2411 The internal thread is connected with a tightening positioning piece 2412. The tightening positioning piece 2412 can use a positioning screw or a reducing screw to reduce the axial stroke of the tightening positioning piece 2412. The tightening positioning piece 2412 advances or Retreat, so that the position of the blow pipe 242 in the support sleeve 241 is fixed. Both ends of the blow pipe 242 are fixedly connected with threaded joints 243 respectively. One end of the blow pipe 242 is fixedly connected with a boosting nozzle 244 through the threaded joint 243. A boosting flow channel is provided in the boosting nozzle 244, and the boosting flow channel is along the axial direction. The tapered flow channel from the inside to the outside allows the gas ejected from the booster nozzle 244 to maintain a certain pressure and cover a certain area.

An air inlet pipe (not shown in the figure) is connected to the other end of the blow pipe 242. An air pressure reducing valve and a pneumatic shut-off valve are connected to the air inlet pipe. The air pressure reducing valve keeps the air flow flowing into the blow pipe 242 at a stable pressure. , the pneumatic cut-off valve can cut off the air flow entering the blow pipe 242 in real time. Thermal detection devices are respectively provided at corresponding positions at the front end of the preheating straightening machine 1, the tail end of the finishing mill, and the rear end of the purging device 2. The thermal inspection device can use a laser temperature measurement probe; specifically, the front and rear sides of the purging device 2 There are thermal inspection devices 2 meters away from each other. The two sets of thermal inspection devices are interlocked with the pneumatic cut-off valves. When the front end of the hot steel plate on the finishing mill passes the thermal inspection device installed on the front side of the purge device 2, the thermal inspection device Upload the temperature signal, and control the pneumatic cut-off valve to open the blow pipe 242 for air intake, and start the purge device 2 in advance to purge the upcoming steel plate; when the steel plate enters the preheating straightening machine 1, the purge device 2 continues to purge the surface of the steel plate. Air washing is carried out until the steel plate passes through the purge device 2. The thermal detection device detects that the steel plate has left and uploads the temperature signal, and controls the pneumatic cut-off valve to cut off the air inlet of the blow pipe 242, so that there is no steel plate on the preheating straightening machine 1. When passing through, the purge device 2 is turned off to reduce gas and energy consumption.

The working principle or working method of this utility model:

During operation, by adjusting the height and circumferential position of the multiple adjustment components 23 on the support guide rod 22, the distance between two adjacent groups of blowing components can be adjusted; by adjusting the angle slider 234 on the horizontal connecting rod 235 Circular position, thereby adjusting the pitch angle of the blowing assembly, thereby adjusting the angle between the front ends of the plurality of blowing pipes 242 and the plane of the straightening roller table 11 of the preheated straightening machine, by adjusting the position of the blowing pipes 242 in the support sleeve 241 position, so that different blow pipes 242 extend out of the support sleeve 241 with different lengths, so that the blowing gas from the plurality of blowing pipes 242 can fully cover the surface of the steel plate passing through the purging device 2, and the pressure of the sprayed air flow can be kept basically consistent to achieve no dead ends. Purge operations.

Control systems such as pneumatic shut-off valves and thermal detection devices installed in conjunction with the blowing components can realize automatic control of the purging device 2 and reduce air volume and energy consumption.

The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications can be made without departing from the principles of the present utility model. These improvements and modifications should also be regarded as It is the protection scope of this utility model.

Claims (8)

1. A purge device for a preheating straightener, characterized in that the purge device (2) is fixedly arranged at one side of an inlet end of the preheating straightener (1), and comprises:

the positioning block (21), the positioning block (21) is fixedly connected to a supporting side beam (111) of the preheating straightener;

the support guide rod (22), the support guide rod (22) is longitudinally and fixedly connected to the positioning block (21);

the adjusting assemblies (23) comprise a plurality of groups, and the adjusting assemblies (23) are connected to the supporting guide rod (22) in a sliding lifting manner from top to bottom;

the blowing assembly (24) comprises a plurality of groups of blowing assemblies (24), and the groups of blowing assemblies are respectively and correspondingly and fixedly connected to the adjusting assembly (23); the adjusting component (23) can drive the blowing component (24) to axially rotate along the supporting guide rod (22) or drive the blowing component (24) to adjust the pitching included angle along the plumb plane.

2. The purge apparatus for a pre-heat straightener according to claim 1, wherein the adjustment assembly (23) comprises a lifting slide (231) and a recliner slide (234);

the lifting device comprises a lifting sliding block (231), a lifting handle (233) and a lifting handle (2313), wherein through holes (2313) are formed in two ends of the lifting sliding block (231) and are vertically arranged, first expansion joints (2312) communicated with the through holes (2313) are formed in two ends of the lifting sliding block (231), connecting screw holes (2311) penetrating through two side plate bodies of the first expansion joints (2312) are formed in two ends of the lifting sliding block (231), a threaded connecting rod (232) is connected in the connecting screw holes (2311), and one end of the threaded connecting rod (232) is fixedly connected with the lifting handle (233);

a through hole is formed in one end of the angle adjusting sliding block (234), a second expansion joint (2341) communicated with the through hole is formed in the end of the angle adjusting sliding block, a connecting screw hole penetrating through two side plate bodies of the second expansion joint is formed in the end of the angle adjusting sliding block (234), a threaded connecting rod is connected in the connecting screw hole, and an adjusting handle (233) is fixedly connected to one end of the threaded connecting rod;

wherein, one through hole (2313) of the lifting slide block (231) is sleeved on the supporting guide rod (22), the other through hole (2313) of the lifting slide block (231) is connected with a horizontal connecting rod (235) in a sliding way, and the through hole of the angle adjusting slide block (234) is sleeved at the other end of the horizontal connecting rod (235) in a sliding way.

3. The purge apparatus for a pre-heat straightener according to claim 2, wherein the support guide bar (22) is provided with scale markings (221) along its length;

the horizontal link (235) is provided with scale markings along its length.

4. The purging device for a pre-heat straightener as claimed in claim 2, characterized in that the other end face of the angle adjusting slide block (234) is provided with an installation clamping groove (2342);

the blowing assembly (24) comprises a support sleeve (241) fixedly clamped in an installation clamping groove (2342) and a blowing pipe (242) slidably connected in the support sleeve, threaded connectors (243) are respectively and fixedly connected to two ends of the blowing pipe (242), and one end of the blowing pipe (242) is fixedly connected with a pressurizing nozzle (244) through the threaded connectors (243).

5. The purging device for a pre-heat straightener according to claim 4, wherein a connecting port (2411) is fixedly arranged on the outer periphery of the pipe body of the support sleeve (241), a screwing positioning piece (2412) is connected in the connecting port (2411) in a threaded manner, and the screwing positioning piece (2412) can be rotated forward or backward.

6. The purge apparatus for a pre-heat straightener according to claim 4, wherein a pressurizing flow path is provided in the pressurizing nozzle (244), the pressurizing flow path being a tapered flow path from inside to outside in the axial direction.

7. The purging device for a pre-heat straightener as set forth in claim 4, wherein an air intake pipe is connected to the other end of the blowing pipe (242), and an air pressure reducing valve and a pneumatic cut-off valve are connected to the air intake pipe.

8. The purging device for a pre-heat straightener according to claim 7, wherein a thermal detection device is respectively arranged at the corresponding position of the tail of a finishing mill at the front end of the pre-heat straightener (1) and the rear end of the purging device (2), and the thermal detection device is respectively interlocked with a pneumatic cut-off valve.