Hydraulic circuit purifying structure of furnace dismantling machine big arm telescopic oil cylinder

Abstract

This utility model belongs to the technical field of furnace dismantling machine boom, and in particular, the hydraulic circuit purification structure of the boom telescopic cylinder of the furnace dismantling machine. It includes a main hydraulic pipeline with four sets of fine filter devices connected in series on the main pipeline. The filter elements within the pipeline filters can perform deep filtration of the hydraulic oil. Combined with the one-way flow control of the S-type pipe check valve, it can effectively intercept impurities in the hydraulic system, preventing impurities from entering the boom telescopic cylinder of the furnace dismantling machine. Compared to traditional hydraulic systems that rely solely on basic filtration, this reduces cylinder failures such as cylinder scoring and leakage caused by impurities, ensuring normal cylinder operation. The fine filter device enhances the impurity removal capability of the hydraulic system, maintaining the cleanliness of the hydraulic oil even under harsh working conditions and high operating rates, reducing the number of cylinder failures and downtime. Since frequent cylinder removal and replacement are unnecessary, it avoids the problem of difficulty in unpacking ladles due to the lack of backup machines, ensuring smooth ladle turnover.

Description

Technical Field

[0001] This utility model relates to the field of furnace dismantling machine boom technology, and in particular to the purification structure of the hydraulic circuit of the furnace dismantling machine boom telescopic cylinder. Background Technology

[0002] In the refining area of ​​the 210 converter plant, the hydraulic system of the 5210Ⅲ dismantling machine during ladle cold repairs suffers from incomplete purification of impurities, leading to frequent cylinder scoring and leakage in the boom extension cylinder. The removal and replacement of this cylinder is a large-scale, time-consuming, and labor-intensive project. The lack of a backup machine further complicates ladle dismantling, impacting ladle turnover. The 5210Ⅲ dismantling machine is a critical piece of equipment in the ladle cold repair operations of the 210 converter plant's refining area; the stable operation of its boom extension cylinder directly affects the efficiency of ladle dismantling and the turnover rhythm. The existing general-purpose hydraulic system design of the dismantling machine has significant flaws:

[0003] Impurities in existing hydraulic systems are difficult to completely remove. Under harsh operating conditions, the system is prone to generating foreign matter and impurities. These impurities enter the boom telescopic cylinder with the hydraulic oil, causing cylinder scoring, damage, and leakage. Since the furnace dismantling machine has no backup equipment, the dismantling and replacement of cylinders after failure is a large-scale, time-consuming, and labor-intensive process, directly leading to difficulties in unloading ladles and affecting ladle turnover. On-site offline maintenance time is limited, making it impossible to thoroughly clean the hydraulic system. The continuous circulation of impurities will aggravate cylinder damage, forming a vicious cycle and severely restricting production continuity. Therefore, we have proposed a purification structure for the hydraulic circuit of the boom telescopic cylinder of the furnace dismantling machine. Utility Model Content

[0004] The purpose of this invention is to provide a purification structure for the hydraulic circuit of the boom telescopic cylinder of a furnace dismantling machine, which solves the existing problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A purification structure for the hydraulic circuit of the boom telescopic cylinder of a furnace dismantling machine includes a main hydraulic pipeline. The two ends of the main hydraulic pipeline are respectively connected to the boom telescopic cylinder of the furnace dismantling machine and the main hydraulic system. Four sets of fine filter devices are installed in series on the main hydraulic pipeline. Adjacent sets of fine filter devices are connected by connecting pipelines. Sealing connectors are provided at the connection points between the fine filter devices and the main hydraulic pipeline and the connecting pipelines.

[0007] Preferably, the fine filtration device includes a pipeline filter and an S-type tubular check valve, wherein the inlet of the pipeline filter is connected to the outlet of the S-type tubular check valve, and a filter element is provided inside the pipeline filter.

[0008] Preferably, the maximum working pressure of the S-type pipe check valve is 31.5MPa, the opening pressure is 0.5MPa, the maximum flow rate is 200L / min, and the connection thread of the S-type pipe check valve is M33*2.

[0009] Preferably, the nominal pressure of the pipeline filter is 32MPa, the nominal flow rate is 100L / min, the connection thread of the pipeline filter is M42*2, and an observation window is provided on the outside of the pipeline filter for observing the contamination status of the filter element.

[0010] Preferably, the sealing connector includes a connector body and a sealing ring. The inner side of the connector body is provided with an installation groove, and the sealing ring is embedded in the installation groove. The sealing ring is made of high-pressure resistant and oil-resistant rubber.

[0011] Preferably, both the hydraulic main pipeline and the connecting pipeline are made of high-pressure seamless steel pipe, and both the hydraulic main pipeline and the connecting pipeline are wrapped with an anti-wear protective layer.

[0012] Preferably, a fixed bracket is fixedly installed on the outside of the fine filtration device, one end of the fixed bracket is fixedly connected to the main body of the furnace dismantling machine, and a shock-absorbing pad is provided between the fixed bracket and the fine filtration device.

[0013] Preferably, a pressure sensor is installed on the side of the hydraulic main pipeline near the main hydraulic system unit. The pressure sensor is electrically connected to the control system of the furnace dismantling machine, and the control system is connected to an alarm device.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) The hydraulic circuit purification structure of the boom telescopic cylinder of the furnace dismantling machine of this utility model has four sets of fine filter devices connected in series on the hydraulic main pipeline. The filter element in the pipeline filter can deeply filter the hydraulic oil. Combined with the one-way flow control of the S-type pipe check valve, it can effectively intercept impurities in the hydraulic system and prevent impurities from entering the boom telescopic cylinder of the furnace dismantling machine. Compared with the traditional hydraulic system that only relies on basic filtration, it can significantly reduce cylinder failures such as cylinder scoring and leakage caused by impurities and ensure the normal operation of the cylinder. The setting of the fine filter device enhances the impurity removal capability of the hydraulic system. Even under harsh working conditions and high operating rates, it can maintain the cleanliness of the hydraulic oil and reduce the number of cylinder failures and shutdowns. Since there is no need to frequently dismantle and replace the cylinder, it avoids the problem of difficulty in unpacking the ladle due to the lack of a backup machine, ensures the smooth turnover of the ladle, and meets the needs of continuous production operation.

[0016] (2) The hydraulic circuit purification structure of the boom telescopic cylinder of the furnace dismantling machine of this utility model has an observation window on the outside of the pipeline filter that allows for direct observation of the pollution status of the filter element, facilitating timely replacement of the filter element; the sealing connection ensures the sealing of the pipeline connection through the joint body and the high-pressure and oil-resistant sealing ring, reducing hydraulic oil leakage and impurity infiltration; the fixed bracket, in conjunction with the shock-absorbing pad, can reduce the vibration damage of the fine filtration device during equipment operation, extend its service life, and reduce maintenance frequency and cost; the hydraulic main pipeline and connecting pipeline use high-pressure seamless steel pipes wrapped with anti-wear protective layers, which can withstand the wear of high pressure and harsh environment; the nominal pressure, flow rate and other parameters of the fine filtration device are matched with the hydraulic system of the furnace dismantling machine, and can be stably integrated into the original circuit; the pressure sensor and alarm device work together to monitor abnormal circuit pressure in real time, facilitating timely troubleshooting and further improving the reliability of system operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the purification structure of the hydraulic circuit of the boom telescopic oil cylinder of the furnace dismantling machine proposed in this utility model;

[0019] Figure 2 This is a partial three-dimensional structural diagram of the purification structure of the hydraulic circuit of the boom telescopic oil cylinder of the furnace dismantling machine proposed in this utility model.

[0020] Figure 3 This is a partial three-dimensional structural diagram of the filter element and observation window proposed in this utility model;

[0021] Figure 4 This is a partial three-dimensional structural diagram of the connector body and sealing ring proposed in this utility model.

[0022] In the diagram: 1. Main hydraulic pipeline; 2. Boom telescopic cylinder of the furnace dismantling machine; 3. Main hydraulic system unit; 4. Fine filtration device; 5. Connecting pipeline; 6. Sealing connector; 7. Anti-wear protective layer; 8. Fixed bracket; 9. Main body of the furnace dismantling machine boom; 10. Shock-absorbing pad; 11. Pressure sensor; 12. Alarm device; 41. Pipeline filter; 42. S-type pipe check valve; 411. Filter element; 412. Observation window; 61. Connector body; 62. Sealing ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] refer to Figure 1-4 A purification structure for the hydraulic circuit of the boom telescopic cylinder of a furnace dismantling machine includes a main hydraulic pipeline 1. The two ends of the main hydraulic pipeline 1 are connected to the boom telescopic cylinder 2 and the main hydraulic system 3, respectively. Four sets of fine filter devices 4 are installed in series on the main hydraulic pipeline 1. Adjacent sets of fine filter devices 4 are connected by connecting pipes 5. Sealing connectors 6 are provided at the connections between the fine filter devices 4 and the main hydraulic pipeline 1 and the connecting pipes 5. The four sets of fine filter devices 4 connected in series on the main hydraulic pipeline 1 can deeply purify the hydraulic oil through the filter element 411 inside the pipeline filter 41. The fine filtration device 4, combined with the one-way flow control of the S-type tubular check valve 42, can effectively intercept impurities in the hydraulic system and prevent impurities from entering the boom extension cylinder 2 of the furnace dismantling machine. Compared with the traditional hydraulic system that only relies on basic filtration, it can significantly reduce cylinder failures such as cylinder scoring and leakage caused by impurities and ensure the normal operation of the cylinder. In this embodiment, the fine filtration device 4 includes a pipeline filter 41 and an S-type tubular check valve 42. The inlet of the pipeline filter 41 is connected to the outlet of the S-type tubular check valve 42, and a filter element 411 is installed inside the pipeline filter 41.

[0025] In this embodiment, the maximum working pressure of the S-type tubular check valve 42 is 31.5 MPa, the opening pressure is 0.5 MPa, and the maximum flow rate is 200 L / min. The connection thread of the S-type tubular check valve 42 is M33*2. The fine filter device 4 enhances the impurity removal capability of the hydraulic system, maintaining the cleanliness of the hydraulic oil even under harsh working conditions and high operating rates, reducing the number of cylinder failures and downtimes. Since there is no need to frequently disassemble and replace the cylinder, the problem of difficulty in unpacking the ladle due to the lack of a backup machine is avoided, ensuring the smooth turnover of the ladle and meeting the needs of continuous production. In this embodiment, the nominal pressure of the pipeline filter 41 is 32 MPa, the nominal flow rate is 100 L / min, the connection thread of the pipeline filter 41 is M42*2, and an observation window 412 is provided on the outside of the pipeline filter 41 for observing the contamination status of the filter element 411.

[0026] In this embodiment, the sealing connector 6 includes a connector body 61 and a sealing ring 62. The inner side of the connector body 61 is provided with an installation groove, and the sealing ring 62 is embedded in the installation groove. The sealing ring 62 is made of high-pressure resistant and oil-resistant rubber. The observation window 412 on the outside of the pipeline filter 41 allows for direct observation of the contamination status of the filter element 411, facilitating timely replacement of the filter element. The sealing connector 6, through the connector body 61 and the high-pressure resistant and oil-resistant sealing ring 62, ensures the sealing of the pipeline connection, reducing hydraulic oil leakage and impurity infiltration. The fixed bracket 8, in conjunction with the shock-absorbing pad 10, can reduce vibration damage to the fine filtration device 4 during equipment operation, extend its service life, and reduce maintenance frequency and cost. In this embodiment, both the hydraulic main pipeline 1 and the connecting pipeline 5 are made of high-pressure seamless steel pipes, and both the hydraulic main pipeline 1 and the connecting pipeline 5 are wrapped with an anti-wear protective layer 7.

[0027] In this embodiment, a fixed bracket 8 is fixedly installed on the outside of the fine filtration device 4. One end of the fixed bracket 8 is fixedly connected to the main body 9 of the furnace dismantling machine. A shock-absorbing pad 10 is provided between the fixed bracket 8 and the fine filtration device 4. The hydraulic main pipeline 1 and the connecting pipeline 5 are made of high-pressure seamless steel pipes and wrapped with an anti-wear protective layer 7, which can withstand the wear of high pressure and harsh environment. The nominal pressure, flow rate and other parameters of the fine filtration device 4 are matched with the hydraulic system of the furnace dismantling machine, and can be stably integrated into the original circuit. The pressure sensor 11 and the alarm device 12 work together to monitor the abnormal pressure of the circuit in real time, which facilitates timely troubleshooting and further improves the reliability of the system operation. In this embodiment, a pressure sensor 11 is provided on the side of the hydraulic main pipeline 1 near the main hydraulic system 3. The pressure sensor 11 is electrically connected to the control system of the furnace dismantling machine, and the control system is connected to the alarm device 12.

[0028] The implementation principle of the hydraulic circuit purification structure of the boom telescopic cylinder of the furnace dismantling machine in this embodiment is as follows: Four sets of fine filter devices 4 connected in series on the main hydraulic pipeline 1 can deeply filter the hydraulic oil through the filter element 411 in the pipeline filter 41. Combined with the one-way flow control of the S-type pipe check valve 42, it can effectively intercept impurities in the hydraulic system and prevent impurities from entering the boom telescopic cylinder 2 of the furnace dismantling machine. Compared with the traditional hydraulic system that only relies on basic filtration, it can significantly reduce cylinder failures such as cylinder scoring and leakage caused by impurities, and ensure the normal operation of the cylinder. The setting of the fine filter device 4 enhances the impurity removal capability of the hydraulic system. Even under harsh working conditions and high operating rates, it can maintain the cleanliness of the hydraulic oil and reduce the number of cylinder failures and downtime. Since there is no need to frequently dismantle and replace the cylinder, it avoids the problem of difficulty in unpacking the ladle due to the lack of a backup machine, ensures the smooth turnover of the ladle, and meets the needs of continuous production operation.

[0029] The observation window 412 on the outside of the pipeline filter 41 allows for direct observation of the contamination status of the filter element 411, facilitating timely replacement. The sealing connector 6, through the connector body 61 and the high-pressure and oil-resistant sealing ring 62, ensures the sealing of the pipeline connection, reducing hydraulic oil leakage and impurity infiltration. The fixed bracket 8, in conjunction with the shock-absorbing pad 10, reduces vibration damage to the fine filter device 4 during equipment operation, extends its service life, and reduces maintenance frequency and costs. The main hydraulic pipeline 1 and the connecting pipeline 5 are made of high-pressure seamless steel pipes wrapped with an anti-wear protective layer 7, which can withstand the wear of high pressure and harsh environments. The nominal pressure, flow rate, and other parameters of the fine filter device 4 are matched with the hydraulic system of the furnace dismantling machine, allowing for stable integration into the original circuit. The pressure sensor 11, in conjunction with the alarm device 12, can monitor abnormal circuit pressure in real time, facilitating timely troubleshooting and further improving the reliability of system operation.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The above provides a detailed description of the hydraulic circuit purification structure of the boom telescopic cylinder of the furnace dismantling machine provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A demolition machine boom telescopic cylinder hydraulic circuit purification structure, characterized by, include: The hydraulic main pipeline (1) is connected to the boom extension cylinder (2) of the furnace dismantling machine and the main hydraulic system (3) at both ends. Four sets of fine filter devices (4) are installed in series on the hydraulic main pipeline (1). The two adjacent sets of fine filter devices (4) are connected by connecting pipes (5). Sealing connectors (6) are provided at the connection points between the fine filter devices (4) and the hydraulic main pipeline (1) and the connecting pipes (5).

2. The hydraulic circuit purifying structure of the large arm telescopic oil cylinder of the furnace dismantling machine according to claim 1, characterized in that, The fine filtration device (4) includes a pipeline filter (41) and an S-type tubular check valve (42). The inlet of the pipeline filter (41) is connected to the outlet of the S-type tubular check valve (42). A filter element (411) is installed inside the pipeline filter (41).

3. The hydraulic circuit purification structure for the boom telescopic cylinder of a furnace dismantling machine according to claim 2, characterized in that, The maximum working pressure of the S-type pipe check valve (42) is 31.5MPa, the opening pressure is 0.5MPa, the maximum flow rate is 200L / min, and the connection thread of the S-type pipe check valve (42) is M33*2.

4. The hydraulic circuit purification structure for the boom telescopic cylinder of a furnace dismantling machine according to claim 2, characterized in that, The nominal pressure of the pipeline filter (41) is 32MPa, the nominal flow rate is 100L / min, the connection thread of the pipeline filter (41) is M42*2, and an observation window (412) is provided on the outside of the pipeline filter (41) for observing the contamination status of the filter element (411).

5. The hydraulic circuit purification structure for the boom telescopic cylinder of a furnace dismantling machine according to claim 1, characterized in that, The sealing connector (6) includes a connector body (61) and a sealing ring (62). The inner side of the connector body (61) is provided with an installation groove, and the sealing ring (62) is embedded in the installation groove. The sealing ring (62) is made of high pressure resistant and oil resistant rubber.

6. The hydraulic circuit purification structure for the boom telescopic cylinder of a furnace dismantling machine according to claim 1, characterized in that, The hydraulic main pipeline (1) and the connecting pipeline (5) are both made of high-pressure seamless steel pipes, and the outer sides of the hydraulic main pipeline (1) and the connecting pipeline (5) are wrapped with a wear-resistant protective layer (7).

7. The hydraulic circuit purification structure for the boom telescopic cylinder of a furnace dismantling machine according to claim 1, characterized in that, A fixed bracket (8) is fixedly installed on the outside of the fine filtration device (4). One end of the fixed bracket (8) is fixedly connected to the main body (9) of the furnace dismantling machine. A shock-absorbing pad (10) is provided between the fixed bracket (8) and the fine filtration device (4).

8. The hydraulic circuit purification structure for the boom telescopic cylinder of a furnace dismantling machine according to claim 1, characterized in that, A pressure sensor (11) is installed on the side of the hydraulic main pipeline (1) near the hydraulic system host (3). The pressure sensor (11) is electrically connected to the control system of the furnace dismantling machine. The control system is connected to an alarm device (12).

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