High-speed plugging control system for clay gun

Abstract

The utility model belongs to the technical field of hydraulic clay guns, and particularly relates to a clay gun high-speed plugging control system which comprises a clay beating control loop, a clay gun rotating control loop and an adjusting control loop. The mud ramming control loop and the mud gun rotation control loop are respectively communicated with the oil supply pipeline through corresponding oil pipes; the adjusting control loop comprises an energy accumulator, and the energy accumulator is communicated with the oil supply pipeline, the mud beating control loop and the mud gun rotation control loop through an overflow valve, a throttling valve and a one-way valve which are connected in parallel. The device has the advantages of high rotating speed, small impact, high plugging success rate, low failure rate, high safety, energy conservation, efficiency improvement and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic clay gun technical field, concretely relates to a clay gun high -speed mouth control system. BACKGROUND

[0002] The furnace front iron tapping mouth adopts the hydraulic clay gun equipment, the conventional mouth adopts the hydraulic reversing valve operation clay gun to carry out the mouth operation, the clay gun is pushed from the standby position to the working position through the hydraulic cylinder, the clay gun is pushed to block the iron mouth through the hydraulic cylinder, the clay gun needs to aim at the iron mouth of the iron tapping during operation, the walking track and the molten iron track have the coincidence, the clay gun mouth is the high temperature operation, the operation environment is poor, the operation stability is not high, and the mouth operation equipment is relatively dangerous.

[0003] The conventional furnace front clay gun operation system adopts the hydraulic valve table to control the two action oil cylinders of the hydraulic clay gun, the hydraulic valve table adopts the reversing valve operation, needs to operate the reversing valve to control the clay gun action during operation, drives the hydraulic clay gun to rotate to the position, and the clay mud is hit into the iron mouth to carry out the mouth, and the clay gun control system structure is as shown in Figure 1 The clay gun control system has the following defects:

[0004] The pressure fluctuation is big, and the impact is easy to produce, the failure rate is high, the equipment is easy to damage, the speed is slow, the clay gun is easy to burn, the mouth success rate is low, the equipment is easy to cause the leakage of mud, the equipment burn is serious, the clay gun and the clay mud usage are big, and the energy saving is not energy saving, the safety is poor, the equipment impact is big, the equipment safety is poor, the personnel work intensity is big, and the personnel safety is poor.

[0005] However, the existing improved technology for the slow rotation speed of the clay gun uses a differential control circuit to improve the rotation speed of the clay gun, but the use has a time limit, and the speed needs to be improved.

[0006] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0007] The utility model aims at overcoming the defects of the prior art, and provides a clay gun high-speed mouth control system, which adopts a flow regulation mode, so that the clay gun has the advantages of fast rotation speed, small impact, high mouth success rate, low failure rate, high safety, energy saving and efficiency improvement, and the service life of the clay gun equipment is improved.

[0008] In order to realize the above object, the utility model adopts the following technical scheme:

[0009] The utility model provides a clay gun high-speed mouth control system, which comprises a mud hitting control circuit, a clay gun rotation control circuit and an adjustment control circuit, the adjustment control circuit is communicated with the oil supply pipeline, the mud hitting control circuit and the clay gun rotation control circuit are communicated with the oil supply pipeline through corresponding oil pipes respectively;

[0010] The adjusting control circuit comprises an accumulator, the accumulator is communicated with an oil supply pipeline, a mud hitting control circuit and a mud gun rotating control circuit through a parallel overflow valve, a throttle valve and a one-way valve respectively.

[0011] Further, the mud gun rotating control circuit comprises a first reversing valve, an oil discharge port of the first reversing valve is communicated with an oil discharge pipeline through an oil pipe, an oil inlet of the first reversing valve is communicated with the oil supply pipeline through an oil pipe, and an oil return port of the first reversing valve is communicated with an oil return pipeline through an oil pipe and a first one-way valve;

[0012] The hydraulic oil output by the first reversing valve is divided into two paths, one path enters a rodless cavity of a mud gun rotating cylinder through a first hydraulic control one-way valve, a first tubular throttle valve and a first ball valve, and the other path enters a rod cavity of the mud gun rotating cylinder through a second hydraulic control one-way valve, a second tubular throttle valve and a second ball valve.

[0013] The control oil port of the first hydraulic control one-way valve is communicated with the second path through an oil pipe, and the control oil port of the second hydraulic control one-way valve is communicated with the first path through an oil pipe.

[0014] Further, the second tubular throttle valve adopts a DN40 or greater than DN40 tubular throttle valve.

[0015] Further, the first reversing valve, the first hydraulic control one-way valve and the second hydraulic control one-way valve adopt DN32 gauge hydraulic valves.

[0016] Further, the mud hitting control circuit comprises a second reversing valve, an oil discharge port of the second reversing valve is communicated with the oil discharge pipeline through an oil pipe, an oil inlet of the second reversing valve is communicated with the oil supply pipeline through an oil pipe, and an oil return port of the second reversing valve is communicated with the oil return pipeline through an oil pipe and a second one-way valve.

[0017] The hydraulic oil output by the second reversing valve is divided into two paths, three paths enter a rodless cavity of a mud hitting cylinder through a third hydraulic control one-way valve, a third tubular throttle valve and a third ball valve, and four paths enter a rod cavity of the mud hitting cylinder through a fourth tubular throttle valve and a fourth ball valve.

[0018] The control oil port of the third hydraulic control one-way valve is communicated with the fourth path through an oil pipe.

[0019] Further, the first reversing valve and the second reversing valve adopt a manual reversing valve, an electromagnetic reversing valve or a proportional reversing valve.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1) The utility model provides a kind of mud gun high-speed block control system, the system is provided with and oil supply pipeline, mud control loop and mud gun rotation control loop are all communicated with adjusting control loop, the adjusting control loop can make mud gun rotation speed multistage adjustable, specifically, the throttle valve of adjusting control loop can be adjusted according to the need of the hydraulic oil in energy accumulator to adjust mud gun rotation speed to supplement oil supply pipeline.In addition, tube throttle valve can also adjust oil return flow, and then adjust rotation speed.The utility model improves the rotation speed of mud gun, can reduce the contact time of mud gun advancing towards molten iron and molten iron, protects the front part of mud gun from burning, so equipment burning is reduced, and failure rate is low, not easy to leak mud, cannon nozzle and cannon mud usage are reduced, reach the purpose of reducing cost and increasing efficiency.Mud gun burning has influence on block, so the increase of mud gun rotation speed increases the block success rate and block safety.

[0022] 2) The utility model provides a kind of mud gun high-speed block control system, the system pressure fluctuation is small, and equipment stability is high, and impact is small.Specifically, the accumulator of the system can absorb the hydraulic oil high pressure pulse when mud gun impact, when mud gun equipment is impacted, oil supply pipeline pressure can be instantaneously increased, and hydraulic oil can enter accumulator by check valve, to reduce the pressure of oil supply pipeline when impact, reduce equipment impact and vibration, equipment maintenance amount reduces, personnel working intensity reduces, personnel safety improves. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings incorporated into the specification and form part of the specification, together with the specification for explaining the principle of the utility model.

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in embodiment or prior art description will be briefly introduced as follows, obviously, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0025] Figure 1 It is the structural schematic diagram of prior art mud gun control system;

[0026] Figure 2 It is the structural schematic diagram of the utility model mud gun high-speed block control system.

[0027] Wherein: 1 is a mud control circuit; 2 is a mud gun rotation control circuit; 3 is an adjustment control circuit; 11 is a second reversing valve; 12 is a second check valve; 13 is a third hydraulic control check valve; 14 is a third tubular throttle valve; 15 is a third ball valve; 16 is a fourth tubular throttle valve; 17 is a fourth ball valve; 21 is a first reversing valve; 22 is a first check valve; 23 is a first hydraulic control check valve; 24 is a first tubular throttle valve; 25 is a first ball valve; 26 is a second hydraulic control check valve; 27 is a second tubular throttle valve; 28 is a second ball valve; 31 is an accumulator; 32 is an overflow valve; 33 is a throttle valve; and 34 is a check valve. DETAILED DESCRIPTION

[0028] Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all the aspects falling within the scope of the present application. Instead, they are merely examples in accordance with some aspects of the present application, as detailed in the appended claims.

[0029] Please refer to Figure 2 The mud gun high-speed blockage control system provided by the embodiment of the present application comprises a mud control circuit 1, a mud gun rotation control circuit 2 and an adjustment control circuit 3, the adjustment control circuit 3 is in communication with an oil supply pipeline, and the mud control circuit 1 and the mud gun rotation control circuit 2 are respectively in communication with the oil supply pipeline through corresponding oil pipes.

[0030] The adjustment control circuit 3 comprises an accumulator 31, and the accumulator 31 is in communication with the oil supply pipeline, the mud control circuit 1 and the mud gun rotation control circuit 2 respectively through a parallel-connected overflow valve 32, a throttle valve 33 and a check valve 34.

[0031] It should be noted that the overflow valve 32 is used for high-pressure protection, and when the pressure of the accumulator 31 is too high, the hydraulic oil flows into the oil supply pipeline through the overflow valve 32, thereby reducing the risk of high-pressure accidents, the accumulator 31 can absorb high-pressure pulses of equipment impact, when the equipment is impacted, the pressure of the oil supply pipeline will instantaneously increase, the hydraulic oil can flow into the accumulator 31 through the check valve 34, thereby reducing the pressure of the oil supply pipeline when the impact occurs, and the throttle valve 33 can adjust the flow of the accumulator 31 supplemented to the oil supply pipeline according to needs.

[0032] Further, the mud gun rotation control circuit 2 comprises a first reversing valve 21, the drain port of the first reversing valve 21 is in communication with a drain pipeline through an oil pipe, the inlet port of the first reversing valve 21 is in communication with the oil supply pipeline through an oil pipe, and the return port of the first reversing valve 21 is in communication with a return pipeline through an oil pipe and a first check valve 22.

[0033] The hydraulic oil output by the first reversing valve 21 is divided into two paths, one path enters the rodless cavity of the mud gun rotating oil cylinder through the first hydraulic control check valve 23, the first tubular throttle valve 24 and the first ball valve 25, and the other path enters the rod cavity of the mud gun rotating oil cylinder through the second hydraulic control check valve 26, the second tubular throttle valve 27 and the second ball valve 28.

[0034] The control oil port of the first hydraulic control check valve 23 is communicated with the second path through an oil pipe, and the control oil port of the second hydraulic control check valve 26 is communicated with the first path through an oil pipe.

[0035] Further, the second tubular throttle valve 27 adopts a DN40 or greater than DN40 tubular throttle valve.

[0036] Further, the first reversing valve 21, the first hydraulic control check valve 23 and the second hydraulic control check valve 26 adopt a DN32 pass hydraulic valve. Selecting a large pass can reduce the pressure loss and flow attenuation of the superimposed valve, and compared with the conventional DN25 pass superimposed circuit, the maximum flow of the utility model is improved from the original 500L / min to 800L / min, and the mud gun rotating speed is faster.

[0037] Further, the mud hitting control circuit 1 comprises a second reversing valve 11, the oil discharge port of the second reversing valve 11 is communicated with an oil discharge pipeline through an oil pipe, the oil inlet of the second reversing valve 11 is communicated with an oil supply pipeline through an oil pipe, and the oil return port of the second reversing valve 11 is communicated with an oil return pipeline through an oil pipe and a second check valve 12;

[0038] The hydraulic oil output by the second reversing valve 11 is divided into two paths, three paths enter the rodless cavity of the mud hitting oil cylinder through the third hydraulic control check valve 13, the third tubular throttle valve 14 and the third ball valve 15, and four paths enter the rod cavity of the mud hitting oil cylinder through the fourth tubular throttle valve 16 and the fourth ball valve 17.

[0039] The control oil port of the third hydraulic control check valve 13 is communicated with the fourth path through an oil pipe.

[0040] Further, the first reversing valve 21 and the second reversing valve 11 adopt a manual reversing valve, an electromagnetic reversing valve or a proportional reversing valve.

[0041] It should be noted that the third hydraulic control check valve 13, the first hydraulic control check valve 23 and the second hydraulic control check valve 26 are used for pressure maintenance, when the first reversing valve 21 and the second reversing valve 11 are operated to return to the middle position, both circuits are connected with the T port, the control pressure of the third hydraulic control check valve 13, the first hydraulic control check valve 23 and the second hydraulic control check valve 26 is reduced, so that the third hydraulic control check valve 13, the first hydraulic control check valve 23 and the second hydraulic control check valve 26 are one-way closed, the pressure of the pipeline between the third hydraulic control check valve 13, the first hydraulic control check valve 23 and the second hydraulic control check valve 26 and the corresponding mud hitting cylinder and the mud gun rotary cylinder is closed, and the pressure maintenance state is achieved, so that the mud gun can be stopped at any position, meanwhile, the influence of load change is avoided, the stopping position accuracy and stability of the mud gun are improved, and the mud hitting cylinder is prevented from retreating under the pressure of the high-temperature molten iron of the blast furnace, so that the blockage failure is avoided.

[0042] In the embodiment, the third hydraulic control check valve 13, the first hydraulic control check valve 23 and the second hydraulic control check valve 26 are not limited to the form described in the above. Figure 2

[0043] In addition, the number of the accumulators 31 is not limited in the embodiment, and one or more accumulators can be arranged.

[0044] The specific control method of the mud gun high-speed blockage control system is as follows:

[0045] The method is completed by the first reversing valve 22 and the second reversing valve 11 according to a blockage instruction, and specifically includes the following steps:

[0046] Step 1: the mud gun rotary cylinder is controlled to advance or retreat by operating the first reversing valve 21;

[0047] Step 2: the mud hitting cylinder is controlled to hit mud or retreat to load mud by operating the second reversing valve 11;

[0048] The specific process of step 1 is as follows:

[0049] When the mud gun advances, the hydraulic oil of the oil supply pipeline P port flows into the accumulator 31 through the total ball valve and the check valve 34 (the hydraulic oil is stored in the accumulator 31), the first reversing valve 21 is operated to the right side position, the hydraulic oil of the oil supply pipeline P port and the accumulator 31 flow into the rodless cavity of the mud gun rotary cylinder through the first reversing valve 21, the first hydraulic control check valve 23, the first tubular throttle valve 24 and the first ball valve 25, in the process, the hydraulic oil flowing to the rodless cavity is branched, part of which enters the control oil port of the second hydraulic control check valve 26, so that the second hydraulic control check valve 26 is bidirectional, at this time, the oil return in the rod cavity of the mud gun rotary cylinder flows back to the oil tank through the second ball valve 28, the second tubular throttle valve 27, the second hydraulic control check valve 26, the first reversing valve 21, the second check valve 22 and the oil return pipeline T port;

[0050] ​When the mud gun is retracted, the first reversing valve 21 is operated to the left side position, the hydraulic oil of the accumulator 31 and the oil supply pipeline P is flowed into the rod cavity of the mud gun rotary oil cylinder through the first reversing valve 21, the second hydraulic control check valve 26, the second tubular throttle valve 27 and the second ball valve 28, the mud gun is retracted, in the process, the hydraulic oil flowed into the rod cavity is branched, part of which enters the first hydraulic control check valve 23, so that the first hydraulic control check valve 23 is bidirectional, at this time, the oil return in the rodless cavity of the mud gun rotary oil cylinder is flowed back to the oil tank through the first ball valve 25, the first tubular throttle valve 24, the first hydraulic control check valve 23, the first reversing valve 21, the second check valve 22 and the oil return pipeline T.

[0051] The specific process of step 2 is as follows:

[0052] When the mud is hit, the second reversing valve 11 is operated to the right side position, the hydraulic oil of the accumulator 31 and the oil supply pipeline P is flowed into the rodless cavity of the mud hitting oil cylinder through the second reversing valve 11, the third hydraulic control check valve 13, the third tubular throttle valve 14 and the third ball valve 15, the mud hitting oil cylinder is pushed to hit the mud;

[0053] When the mud is hit, the second reversing valve 11 is operated to the right side position, the hydraulic oil of the accumulator 31 and the oil supply pipeline P is flowed into the rodless cavity of the mud hitting oil cylinder through the second reversing valve 11, the third hydraulic control check valve 13, the third tubular throttle valve 14 and the third ball valve 15, the mud hitting oil cylinder is pushed to hit the mud;

[0054] Further, the oil supply flow of the accumulator 31 is adjusted by controlling the throttle valve 33, when the required flow of the rod cavity or the rodless cavity of the mud gun rotary oil cylinder is less than the flow of the oil supply pipeline P, the throttle valve 33 is controlled to be closed, the accumulator 31 does not need to supply oil, and the hydraulic oil flow control mode of the mud hitting oil cylinder is the same as that of the mud gun rotary oil cylinder.

[0055] The above only is the specific implementation of the present application, so that those skilled in the art can understand or realize the present application. Various modifications of these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application.

[0056] It should be understood that the present application is not limited to the above described and that various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

Claims

1. A high-speed plugging control system for mud guns, characterized in that, It comprises a mud hitting control circuit (1), a mud gun rotating control circuit (2) and an adjusting control circuit (3), the adjusting control circuit (3) is communicated with the oil supply pipeline, the mud hitting control circuit (1) and the mud gun rotating control circuit (2) are communicated with the oil supply pipeline through corresponding oil pipes respectively; The adjusting control circuit (3) comprises an accumulator (31), the accumulator (31) is communicated with the oil supply pipeline, the mud hitting control circuit (1) and the mud gun rotating control circuit (2) through a parallel overflow valve (32), a throttle valve (33) and a one-way valve (34) respectively.

2. The high speed baffle control system of claim 1, wherein, The mud gun rotating control circuit (2) comprises a first reversing valve (21), the oil discharge port of the first reversing valve (21) is communicated with the oil discharge pipeline through an oil pipe, the oil inlet of the first reversing valve (21) is communicated with the oil supply pipeline through an oil pipe, and the oil return port of the first reversing valve (21) is communicated with the oil return pipeline through an oil pipe and a first one-way valve (22); The hydraulic oil output by the first reversing valve (21) is divided into two paths, one path enters the rodless cavity of the mud gun rotating oil cylinder through a first hydraulic control one-way valve (23), a first tubular throttle valve (24) and a first ball valve (25), and the other path enters the rod cavity of the mud gun rotating oil cylinder through a second hydraulic control one-way valve (26), a second tubular throttle valve (27) and a second ball valve (28); The control oil port of the first hydraulic control one-way valve (23) is communicated with the other path through an oil pipe, and the control oil port of the second hydraulic control one-way valve (26) is communicated with the one path through an oil pipe.

3. The high speed baffle control system of claim 2, wherein, The second tubular throttle valve (27) adopts a DN40 or greater than DN40 tubular throttle valve.

4. The high speed baffle control system of claim 2, wherein, The first reversing valve (21), the first hydraulic control one-way valve (23) and the second hydraulic control one-way valve (26) adopt DN32 gauge hydraulic valves.

5. The high speed baffle control system of claim 2, wherein, The mud hitting control circuit (1) comprises a second reversing valve (11), the oil discharge port of the second reversing valve (11) is communicated with the oil discharge pipeline through an oil pipe, the oil inlet of the second reversing valve (11) is communicated with the oil supply pipeline through an oil pipe, and the oil return port of the second reversing valve (11) is communicated with the oil return pipeline through an oil pipe and a second one-way valve (12); The hydraulic oil output by the second reversing valve (11) is divided into two paths, three paths enter the rodless cavity of the mud hitting oil cylinder through a third hydraulic control one-way valve (13), a third tubular throttle valve (14) and a third ball valve (15), and four paths enter the rod cavity of the mud hitting oil cylinder through a fourth tubular throttle valve (16) and a fourth ball valve (17); The control oil port of the third hydraulic control one-way valve (13) is communicated with the four paths through an oil pipe.

6. The high speed baffle control system of claim 5, wherein, The first reversing valve (21) and the second reversing valve (11) adopt a manual reversing valve, an electromagnetic reversing valve or a proportional reversing valve.

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