CN204569952U - Hydraulic spray gun plugging mechanism - Google Patents

Abstract

The utility model discloses a hydraulic cannon mud-beating mechanism. There is an oil cylinder sealing block inside the mud cylinder, and a mud cylinder piston ring positioning seat is provided at the end of the oil cylinder sealing block. The mud plug pressure ring is connected with the oil cylinder sealing block by connecting screws. The outer periphery of the plug ring is provided with convex teeth. A mud discharge ring is installed in the mud discharge ring fixed frame, and the inner chamber of the mud discharge ring is equipped with a sliding bearing. The periphery of the mud discharge ring is made with triangular wedges, and the gap between two adjacent triangle wedges faces the mud discharge port. The oil cylinder liner located in the inner cavity of the oil cylinder seat is fixedly connected with the oil cylinder seal block, the inner cavity of the oil cylinder liner has a piston rod positioning sleeve, the oil cylinder piston rod is set in the piston rod positioning sleeve, and the piston rod fixed head is installed on the cylinder piston rod. The outer end is processed with a mud inlet on the mud cylinder. This hydraulic cannon mud-beating mechanism operates stably, discharges mud smoothly, does not deform, has a long service life, and is suitable for sealing tapholes of metallurgical blast furnaces with various nominal capacities.

Description

Hydraulic cannon mud mechanism

technical field

The utility model relates to a hydraulic gun mud-beating mechanism used for sealing the blast furnace taphole after the molten iron is discharged in a metallurgical blast furnace.

Background technique

After the metallurgical blast furnace has put the molten iron, the taphole must be sealed in time so that the next round of molten iron smelting can be carried out. The commonly used sealing mechanism is a set of special mechanisms or devices, which are mainly composed of mud cylinders with sealing mud and hydraulic cylinders. There are domestic equipment and special equipment imported from abroad, each with its own characteristics; The mud scraping ring used in the hydraulic cylinder of these equipment/devices before the utility model has a weak supporting effect on the cylinder, the cylinder body is in a cantilever state, and the stability of the telescopic operation of the cylinder body is poor; secondly, the mud discharge effect of the fixed ring installed in the mud cylinder Poor, due to the difficulty of mud discharge from the fixed ring, the inner surface of the mud cylinder is easily scratched and worn, and even the fixed ring is deformed or the stopper is broken; the third is that the fixed ring itself has low structural strength, large mud discharge resistance, and is easy to deform and damage..., these deficiencies make the overall service life of the dredging device that seals the blast furnace taphole low, and the dredging effect is not good.

Contents of the invention

The purpose of the utility model is to provide a hydraulic cannon mud-discharging mechanism which improves the running stability of the hydraulic cylinder, improves the support of the oil cylinder, smoothly discharges mud, prolongs the service life of the cylinder body and has an excellent use effect of the mud discharge ring.

In order to achieve the above object, the technical solution adopted in the utility model is: the hydraulic gun mud mechanism includes a nozzle connector, a mud gun cone, a mud cylinder, an oil cylinder liner, an oil cylinder cylinder seat, an oil cylinder piston rod, and a mud plug Compression ring, oil cylinder seal block, connecting screw, mud cylinder piston ring positioning seat, mud discharge ring, sliding bearing, triangular wedge, mud cylinder piston ring, piston rod fixing head and piston rod positioning sleeve, front connection of mud gun cone There is a nozzle connecting body, the cone of the mud gun is connected with one end of the mud pot, and the mud pot connecting flange is fixed on the outside of the other end of the mud pot so that the mud pot and the mud pot connecting flange form a whole. There is a mud inlet for processing. The inner side of the mud cylinder is equipped with an oil cylinder sealing block, and a mud cylinder piston ring positioning seat is placed at the end step of the oil cylinder sealing block. The mud cylinder piston ring placed in the outer groove of the mud cylinder piston ring positioning seat is connected to the inner wall of the mud cylinder. touch. The mud plug pressure ring is connected with the oil cylinder seal block by connecting screws with a quantity greater than 1 through the connecting hole, and the mud discharge ring fixing frame fixed at the end of the oil cylinder block makes the oil cylinder block and the mud discharge ring fixing frame form a whole. The periphery of the mud ring fixing frame is uniformly processed with a number of mud discharge ports greater than 1. A mud discharge ring is installed in the inner cavity of the mud discharge ring fixing frame, and a sliding bearing is installed in the lower inner cavity of the mud discharge ring. There are evenly distributed or non-uniformly distributed triangular wedges with a quantity greater than 1, and the gap between two adjacent triangular wedges faces the mud discharge port on the mud discharge ring fixing frame. The mud cylinder is connected with the cylinder base of the oil cylinder by connecting bolts with a quantity greater than 1. The oil cylinder liner located in the inner cavity of the oil cylinder seat is fixedly connected with the oil cylinder seal block), and there is a piston rod positioning sleeve in the inner cavity of the oil cylinder liner. The cylinder piston rod is set in the inner cavity of the piston rod positioning sleeve, and the piston rod fixed head is close The piston rod positioning is sleeved on the outer end of the piston rod of the oil cylinder.

The outer periphery of the mud plug pressure ring is processed with a number of uniformly or non-uniformly distributed convex teeth, and the radius R of each convex tooth is less than or equal to the radius R of the inner cavity of the mud cylinder ₁ .

Compared with the prior art, the hydraulic gun mud-beating mechanism provided by the above technical scheme has the following technical effects:

① The mud scraping ring is canceled, and a sliding bearing is installed in the mud discharge ring outside the cylinder block, which greatly improves the support and smooth operation of the cylinder block, and a high-viscosity lubricating oil pot is provided for the lubrication of the sliding bearing.

② The fixed ring welded by the steel plate at right angles is canceled, and the mud discharge ring with the oblique side structure triangular wedge is replaced. The side flows to the mud discharge port, which makes the mud discharge smooth, avoids the accidents of mud leakage accumulation, extrusion and scratching the inner surface of the mud cylinder, and protects the oil cylinder well.

③ The structural strength of the mud discharge ring with triangular wedges is higher than that of the original fixed ring, without deformation and damage, which improves the service life.

④The mud plug pressure ring is changed from a full circle to a toothed circle, which improves the mud scraping effect of the mud cylinder.

Description of drawings

Fig. 1 is a front sectional schematic diagram of the hydraulic gun mud-beating mechanism described in the utility model, which is also a summary drawing of the utility model.

FIG. 2 is a schematic top view of FIG. 1 .

Fig. 3 is a schematic view of the positive structure of the mud plug pressure ring.

Fig. 4 is a schematic front sectional view of the mud discharge ring, which is also a schematic sectional view along line A-A in Fig. 5 .

FIG. 5 is a schematic top view of FIG. 4 .

FIG. 6 is a partially enlarged schematic diagram of part B in FIG. 1 .

Detailed ways

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in further detail.

(As shown in Figures 1 and 6), the hydraulic cannon mud-beating mechanism includes a nozzle connector 1, a mud cannon cone 2, a mud cylinder 3, a mud cylinder connecting flange 3a, and an oil cylinder liner 4 (also called It is mud cylinder piston rod 4), oil cylinder seat 5, oil cylinder piston rod 6, mud inlet 7, mud plug pressure ring 8, oil cylinder seal block 9, connecting screw 10, mud cylinder piston ring positioning seat 11, mud discharge ring 12. Sliding bearing 12a, triangular wedge 12b, mud discharge ring fixing frame 13, mud cylinder piston ring 14, piston rod fixed head 15, piston positioning sleeve 16, mud discharge port 18 and connecting bolt 19, on the mud gun cone 2 The front end of the gun nozzle is connected with a nozzle connecting body 1, and the nozzle of a mud gun is connected with the nozzle connecting body 1, which is a prior art. The refractory mud that seals the blast furnace taphole is sprayed through the nozzle connector 1 and the nozzle of the mud gun, and then the taphole is blocked. The mud gun cone 2 (via the connecting flange) is connected with one end of the mud cylinder 3, and the mud gun The mud cylinder connection flange 3a fixedly connected outside the other end of the cylinder 3 makes the two integral. A mud inlet 7 with a quantity greater than or equal to 1 is processed on the mud cylinder 3 . Close to the mud cylinder connection flange 3a, an oil cylinder seal block 9 is arranged on the inner side of the mud cylinder 3, and a mud cylinder piston ring positioning seat 11 is placed at the end step of the oil cylinder seal block 9, and the outer groove of the mud cylinder piston ring positioning seat 11 The mud cylinder piston ring 14 placed in the mud cylinder is in contact with the inner wall of the mud cylinder 3, and the mud plug pressure ring 8 is connected with the oil cylinder block 9 by N (N > 1 integer) connecting screws 10 through the connecting hole 8b. (As shown in Figure 3) On the outer periphery of the mud plug pressure ring 8, there are uniformly or non-uniformly distributed convex teeth 8a with a number greater than 1, and the radius R of each convex tooth 8a is less than or equal to the inner cavity of the mud cylinder 3 Radius R ₁ , that is, R≤R ₁ . The function of the protruding teeth 8a is to cut the leaking mud adhered to the inner wall of the mud cylinder 3, which destroys the integrity of the solidified refractory mud and reduces the resistance of the mud plug ring 8. The mud discharge ring fixed frame 13 that is connected at the end of oil cylinder block 5 makes both form a whole, and the mud discharge port 18 that quantity is greater than 1 is processed in the periphery of mud discharge ring fixed frame 13, and each mud discharge port 18 can be uniform or non-uniform distribution. A mud discharge ring 12 (as shown in Figures 4 and 5) is installed in the mud discharge ring fixing frame 13, and a sliding bearing 12a is installed in the lower inner cavity of the mud discharge ring 12, and the sliding bearing 12a can improve the mud cylinder and the oil cylinder. support and smooth operation. On the periphery of the mud discharge ring 12, there are evenly distributed triangular wedges 12b with a quantity greater than 1. The inclined side structure of the triangular wedges 12b is easy to discharge mud, and the gaps between two adjacent triangular wedges 12b are fixed against the mud discharge ring. The mud outlet 18 on the frame 13. When the oil cylinder liner 4 is retracted and running (that is, when running to the right as shown in Figures 1 and 6), the leaking mud adhered to the surface of the mud cylinder 3 can flow to the mud discharge port 18 along the inclined side of the triangular wedge 12b, and the mud discharge is smooth. , no accumulation, no scratches on the inner surface of the cylinder. Connect the mud cylinder 3 with the oil cylinder base 5 (also referred to as connecting the mud cylinder connecting flange 3a with the mud discharge ring fixing frame 13) by connecting bolts 19 with a quantity greater than 1 to form an inseparable whole (as shown in Figure 1 , 2 shown). The oil cylinder liner 4 (relative to the mud cylinder 3, the oil cylinder liner 4 can also be called the mud cylinder piston rod 4) located in the inner cavity of the oil cylinder block 5 is connected with the oil cylinder block 9 to form a whole. Cylinder liner 4 must drive oil cylinder sealing block 9 and mud plug pressure ring 8 to move left and right synchronously in the inner cavity of mud cylinder 3 when cylinder liner 4 moves left and right in oil cylinder block 5 inner cavity. Close to the oil cylinder seal block 9, a piston rod positioning sleeve 16 is set in the inner cavity of the oil cylinder liner 4 through a sealing ring, and the oil cylinder piston rod 6 is set in the inner cavity of the piston rod positioning sleeve 16 through a sealing ring, and at the left end of the oil cylinder piston rod 6 A piston rod fixed head 15 is installed near the piston rod positioning sleeve 16 on the outside. Described oil cylinder piston rod 6 is positioned, can not walk left and right. Between the piston rod positioning sleeve 16, the piston rod fixed head 15 and the oil cylinder piston rod 6 and the oil cylinder sealing block 9, a 3 ^# Oil chamber (c). There is 1 in the cavity of oil cylinder piston rod 6 ^# Oil chamber (a) and 2 ^# Oil chamber (b), with a quantity greater than 1 oil inlet/outlet 17 connected to 1 ^# Oil chamber (a) and 2 ^# Oil cavity (b), prior art.

When implementing, start with 1 ^# The oil chamber (a) enters high-pressure oil, and at this time the high-pressure oil starts from 1 ^# The oil chamber (a) enters the inner cavity of the oil cylinder liner 4 through the oil inlet/outlet port 17, and moves the oil cylinder liner 4 together with the oil cylinder seal block 9, mud plug pressure ring 8, etc. to the right to the position shown in Figures 1 and 6 , this moment, the mud inlet 7 was facing the inner cavity of the mud cylinder 3. When the blast furnace molten iron needs to be sealed with refractory mud at the blast furnace taphole, the refractory mud is first injected into the mud cylinder 3 through the mud inlet 7, and the 1 is disconnected at the same time. ^# The high-pressure oil in the oil chamber (a) is synchronously passed through 2 ^# Oil chamber (b) enters 3 ^# Oil chamber (c), 3 ^# The high-pressure oil in the oil chamber (c) pushes the cylinder block 9 and the mud plug ring 8 synchronously to the left as shown in Figures 1 and 6 at high speed, and the refractory mud in the mud cylinder 3 passes through the mud gun cone 2 and the gun The nozzle connecting piece 1 connected with the nozzle is pushed out (ejected) to quickly seal the blast furnace taphole. Disconnect after finishing 2 ^# High pressure oil in oil chamber (b), open 1 ^# The high-pressure oil in the oil chamber (a) pulls the cylinder block 4 and the mud plug pressure ring 8 to the right of the cylinder block 5, and brings back the mud leakage on the mud cylinder 3 cylinder body through the mud discharge ring 12 during operation. Discharge from the mud discharge port 18. Careful operation can realize the purpose described in the utility model.

Claims (2)

1. Hydraulic gun mud mechanism, including nozzle connector (1), mud gun cone (2), mud cylinder (3), oil cylinder liner (4), oil cylinder seat (5), oil cylinder piston rod (6) ), mud plug pressure ring (8), oil cylinder block (9), connecting screw (10), mud cylinder piston ring positioning seat (11), mud discharge ring (12), sliding bearing (12a), triangular wedge ( 12b), mud cylinder piston ring (14), piston rod fixing head (15) and piston rod positioning sleeve (16), the front end of the mud gun cone (2) is connected with the nozzle connector (1), and the mud gun cone (2) Connect with one end of the mud cylinder (3), and the mud cylinder connecting flange (3a) fixedly connected to the outside of the other end of the mud cylinder (3) makes the mud cylinder (3) connect with the mud cylinder flange (3a) ) to form a whole, and a mud inlet (7) is processed on the mud cylinder (3), which is characterized in that: an oil cylinder seal (9) is arranged on the inner side of the mud cylinder (3), and the end of the oil cylinder seal (9) The mud cylinder piston ring positioning seat (11) is placed at the step, and the mud cylinder piston ring (14) placed in the outer groove of the mud cylinder piston ring positioning seat (11) is in contact with the inner wall of the mud cylinder (3); (8b) The mud plug pressure ring (8) is connected with the oil cylinder block (9) by connecting screws (10) with a quantity greater than 1, and the mud discharge ring fixing frame (13) is fixedly connected to the end of the oil cylinder block (5) Make the oil cylinder cylinder base (5) form a whole with the mud-discharging ring fixing frame (13), process the mud discharge ports (18) with a quantity greater than 1 on the periphery of the mud-discharging ring fixing frame (13), and the mud-discharging ring fixing frame (13) 13) A mud discharge ring (12) is installed inside, and a sliding bearing (12a) is installed in the lower inner cavity of the mud discharge ring (12), and the number of uniformly distributed or non-uniform bearings greater than 1 is made around the mud discharge ring (12). Distributed triangular wedges (12b), the gap between adjacent two triangular wedges (12b) is facing the mud discharge port (18) on the mud discharge ring fixed frame (13); ) Connect the mud cylinder (3) with the oil cylinder block (5) into one; the oil cylinder liner (4) located in the inner cavity of the oil cylinder block (5) is fixedly connected with the oil cylinder block (9), and the oil cylinder liner ( 4) There is a piston rod positioning sleeve (16) in the inner cavity, and the cylinder piston rod (6) is set in the inner cavity of the piston rod positioning sleeve (16), and the piston rod fixing head (15) is installed near the piston rod positioning sleeve (16). The outer end of the cylinder piston rod (6). 2. The mud pumping mechanism according to claim 1, characterized in that: the outer periphery of the mud plug pressure ring (8) is processed with more than 1 uniformly or non-uniformly distributed convex teeth (8a), each The radius R of the convex tooth (8a) is less than or equal to the radius R ₁ of the inner cavity of the mud cylinder (3).