Quick pulling device for filter element of electro-hydraulic control bracket filter

Abstract

The utility model relates to a quick pulling device for a filter element of an electro-hydraulic control bracket filter, which belongs to the technical field of coal mine equipment, and can solve the problems that the pulling efficiency of the filter element of the existing electro-hydraulic control bracket filter is low and a separation fault exists in a filter element body when the filter element is pulled, and comprises a rod body I, a rod body II and a rod body III, one ends of the rod body I, the rod body II and the rod body III are connected to a circular bearing, and the other ends of the rod body I, the rod body II and the rod body III are connected to the circular bearing; the other end of the first rod body is provided with an outer hexagonal head, the bottom of the outer hexagonal head is provided with a round sheet-shaped bottom support, the end of the first rod body is sleeved with a first sleeve with internal threads, the bottom of the first sleeve is provided with a hole, the bottom of the first sleeve is provided with a round-pipe-shaped sleeve, and the other end of the second rod body is provided with a second sleeve with external threads. The other end of the rod body III is provided with a sleeve III which is matched with the outer diameter of the bottom of the filter element and is provided with an internal thread, one end of the circular bearing is connected with a loop bar through a pin shaft, the loop bar is provided with a swinging hammer capable of reciprocating along the loop bar, and the end part of the loop bar is provided with a circular sheet-shaped base. By means of the filter element pulling device, the filter element pulling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine equipment, and in particular relates to a quick extraction device for a filter element of an electro-hydraulic control bracket filter. Background Art

[0002] The electro-hydraulic controlled support is a key equipment for the construction of intelligent working faces. Compared with the traditional manually operated support, the support can be remotely controlled, grouped and operated by adjacent supports through the extensive application of sensors, solenoid valves and other components. It can be remotely operated unmanned in the control room. However, the hydraulic components of the electro-hydraulic control system have higher precision. The cleanliness of the emulsion system is crucial to the stable and reliable operation of the support hydraulic system. It needs to be guaranteed by various filtering equipment of the emulsion system. The main indicator is the filtration accuracy of the liquid inlet system. According to the control form of the hydraulic support of the working face, the filtration accuracy required by the manual control system is generally 40μm, and the filtration accuracy required by the electro-hydraulic control system is 25 microns.

[0003] Each electro-hydraulic control bracket is equipped with an automatic backwash filter. The backwash filter of the electro-hydraulic control bracket can filter the emulsion passing through the bracket in real time, and backwash in real time to ensure the cleanliness of the emulsion in the bracket. The filter element is a key component. After long-term use, the filter element becomes blocked, and the filtering effect and efficiency are greatly reduced, resulting in the flow rate and pressure failing to meet the requirements. Some brackets have serious accidents such as slow or even inability to move the bracket, and need to be replaced regularly. Due to impurities in the filter element, there is a certain resistance to extraction, and there is a lack of special replacement tools, so the efficiency of extracting the filter element is low. At the same time, the split design of the filter element, the end of the filter element, the middle of the filter element, and the bottom of the filter element are connected by the same-direction threaded threads. When extracting, the three parts have a separation failure, and a certain section of the core cannot be removed. The probability of this situation occurring is high, which seriously affects the efficiency of extracting the filter element. Therefore, a quick extraction device for the filter element of the electro-hydraulic control bracket filter is provided. Utility Model Content

[0004] The utility model provides a device for quickly extracting a filter element of an electro-hydraulic control bracket filter, aiming at the problems of low extraction efficiency of a filter element of an electro-hydraulic control bracket filter and separation failure of a filter element core body during extraction.

[0005] The utility model adopts the following technical solutions:

[0006] A device for quickly extracting a filter element of an electro-hydraulic control bracket filter comprises a rod body 1, a rod body 2 and a rod body 3, one end of the rod body 1, the rod body 2 and the rod body 3 are connected to a circular bearing, the other end of the rod body 1 is provided with an external hexagonal head matching the internal hexagonal hole at the end of the filter element, the bottom of the external hexagonal head is provided with a circular sheet-shaped base, the end of the rod body 1 is sleeved with a sleeve 1 with an internal thread matching the outer diameter of the end of the filter element, the bottom of the sleeve 1 is opened, the bottom of the sleeve 1 is provided with a circular tubular sleeve, the rod body 1 passes through the sleeve, the other end of the rod body 2 is provided with a sleeve 2 with an external thread matching the inner diameter of the middle part of the filter element, the other end of the rod body 3 is provided with a sleeve 3 with an internal thread matching the outer diameter of the bottom of the filter element, one end of the circular bearing is connected to a sleeve rod through a pin shaft, the sleeve rod is provided with a swing hammer that can reciprocate along the sleeve rod, and the end of the sleeve rod is provided with a circular sheet-shaped base.

[0007] Furthermore, the diameter of the base is smaller than the inner diameter of the first sleeve.

[0008] Furthermore, the diameter of the sleeve is greater than the diameter of the rod body 1.

[0009] Furthermore, the diameter of the base is greater than the diameter of the swing hammer.

[0010] Furthermore, the connecting end of the sleeve rod and the circular bearing is a U-shaped opening, with pin holes on both sides of the U-shaped opening, and an opening is provided in the flat center of the pin shaft end. The pin shaft end is inserted into the U-shaped opening of the sleeve rod and connected by a rod-shaped circular stop pin, so that the sleeve rod can rotate around the circular bearing.

[0011] Furthermore, the rod body 1, the rod body 2 and the rod body 3 are located in the same horizontal plane.

[0012] The beneficial effects of the utility model are as follows:

[0013] By using the utility model, the efficiency of extracting the filter element is improved, the filter element separation failure is effectively solved, the filter element disassembly and assembly process is changed, the labor intensity of on-site operations is effectively reduced, the filter element extraction speed is increased, the maintenance efficiency is improved, and the maintenance difficulty is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the connection between the sleeve rod and the circular bearing;

[0016] Among them: 1-rod body 1; 2-rod body 2; 3-rod body 3; 4-circular bearing; 5-external hexagonal head; 6-bottom support; 7-sleeve 1; 8-sleeve; 9-sleeve 2; 10-sleeve 3; 11-pin shaft; 12-sleeve rod; 13-swing hammer; 14-base. DETAILED DESCRIPTION

[0017] The utility model is further described with reference to the accompanying drawings.

[0018] As shown in the figure, the utility model aims to solve the problem of difficult extraction and filter element separation failure. The device is Y-shaped as a whole. There is an inner hexagon at the end of the filter element, and the outer diameter is a threaded thread. One end of the utility model has an outer hexagonal head 5, whose size matches the inner hexagon at the end of the filter element. The bottom of the outer hexagonal head 5 has a circular plate-shaped base 6. The lower end of the base 6 is a sleeve 7 with an inner thread, and its inner diameter matches the outer diameter of the filter element. The sleeve 7 can be screwed into the end of the filter element. The bottom of the sleeve is opened, and it is perpendicular to the sleeve. A tubular sleeve 8 is welded at the center of the circular end face, with a circular bearing 4 below it, and the other two ends correspond to threaded sleeves that solve the separation failure in the middle of the filter element and the separation failure at the bottom of the filter element. The three are connected to the circular bearing at the center at an angle of 120 degrees. The circular bearing 4 is connected to the hammer 13 through a pin 11, and the bottom is a prototype sheet base 14. The hammer 13 can rotate around the circular bearing 4, and when a certain end is needed, it turns to its lower part, and the reciprocating kinetic energy of the hammer 13 is used to bring out the filter element.

[0019] Solution to filter element separation failure: The filter element is divided into the filter element end, the filter element middle and the filter element bottom. The three parts are connected by threads in the same direction. When the end is twisted, the middle and bottom threads may loosen, resulting in filter element separation failure and cannot be completely removed. There are two situations. In the first situation, the middle part is separated from the end, and the middle and bottom cannot be removed. In the second situation, the middle part is separated from the bottom, and the bottom cannot be removed. Due to the different connecting threads between the three, they must be captured and taken out through the corresponding threaded holes. To solve the first situation that the middle part is separated from the end part, the middle part is an inner threaded opening, the end part connection is an outer threaded opening, and the length that has not been taken out is relatively long, the utility model has a short tube outer threaded sleeve 2 9 at one end, and its outer diameter matches the inner diameter of the inner threaded opening in the middle part, and the lower part of the sleeve 2 9 is a rod body 2 connected to a circular bearing 4; to solve the second situation that the middle part is separated from the bottom part, the bottom part is an outer threaded opening, the middle part connection is an inner threaded opening, and the length that has not been taken out is relatively short, the utility model has a long tube inner threaded sleeve 3 10 at one end, and its inner diameter matches the outer diameter of the outer threaded opening at the bottom, and the lower part of the sleeve 3 10 is a rod body 3 13 connected to a circular bearing 4.

[0020] The hammer part is connected to the sleeve rod 12 through the pin shaft 11. The sleeve rod 12 is designed as a hammer 13 on the outside. The bottom is a circular plate-shaped base 14, and its diameter is not less than the diameter of the hammer 13. The hammer 13 can reciprocate between the pin shaft 11 and the circular plate-shaped base 14. This part can rotate around the circular bearing 4. When a certain end is needed, it will be turned to the lower part, and the reciprocating kinetic energy of the hammer 13 will be used to bring out the filter element.

[0021] Instructions for use: When using, use the outer hexagonal head 5 at one end of the tool to insert into the inner hexagonal mouth of the filter element. The Y-shape is convenient for twisting the filter element to make the filter element thread mouth detach from a part of the valve sleeve, then screw the sleeve 7 with the inner thread mouth onto the filter element thread mouth, and then hold the sleeve 7 with your hand to fix it, and continue to twist the filter element with the other hand to make the filter element thread mouth continue to detach from the valve sleeve, and the filter element thread mouth continues to be screwed into the sleeve 7. After the filter element thread mouth is completely detached from the valve sleeve, the filter element has been screwed into the sleeve 7, and the hammer 13 is turned to the downward direction, and the hammer 13 is driven to reciprocate at a certain speed by hand, and the kinetic energy of the reciprocating motion of the hammer is used to drive the filter element to move outward as a whole, so that the filter element can be easily removed. Since the axial direction of the hammer 13 and the sleeve rod 12 is consistent with the axis of the filter element, the filter element is evenly stressed, which solves the problem that the filter element is difficult to remove due to uneven force in the incorrect position of the valve sleeve, and improves the speed of removing the filter element and the integrity of the filter element. When it is found that the filter element is not completely removed and part of the core is not removed, insert the corresponding sleeve end, use the sleeve thread to screw into the core, and use a swing hammer to remove the remaining core.

[0022] Since the application of the filter element extraction device, the filter element extraction efficiency and troubleshooting speed have been greatly improved. The filter element replacement time has been reduced from 10 minutes to 5 minutes, ensuring the cleanliness of the electro-hydraulic emulsion. After comparing the material consumption data, it was found that the average monthly consumption of filter elements after using the filter element quick extraction tool was reduced by 10 compared with before use, the average monthly consumption of mining intrinsically safe electromagnetic pilot valves was reduced by 3 compared with before, and the average daily waste of emulsified oil was reduced by 0.005m 3 Therefore, the use of the filter element quick extraction tool has produced great economic benefits; it has improved the support maintenance efficiency, reduced the maintenance difficulty, and has been unanimously praised by the support maintenance workers. Compared with before, the number of workers required for support maintenance can be reduced by 1 person per day; due to the timely replacement of the electro-hydraulic control support filter element, the cleanliness of the emulsion is guaranteed, the slow or no movement of the support is greatly reduced, and the coal mining efficiency is improved.

Claims

1. An electro-hydraulic controlled support filter element quick extraction device, characterized in that: The invention comprises a rod body 1 (1), a rod body 2 (2) and a rod body 3 (3), wherein one end of the rod body 1 (1), the rod body 2 (2) and the rod body 3 (3) is connected to a circular bearing (4), the other end of the rod body 1 (1) is provided with an external hexagonal head (5) matching the internal hexagonal hole at the end of the filter element, the bottom of the external hexagonal head (5) is provided with a circular plate-shaped bottom bracket (6), the end of the rod body 1 (1) is sleeved with a sleeve 1 (7) with an internal thread matching the outer diameter of the end of the filter element, the bottom of the sleeve 1 (7) is open, and the bottom of the sleeve 1 (7) is provided with a circular tube A sleeve (8) is provided, the rod body 1 (1) passes through the sleeve (8), the other end of the rod body 2 (2) is provided with a sleeve 2 (9) with an external thread matching the inner diameter of the middle part of the filter element, the other end of the rod body 3 (3) is provided with a sleeve 3 (10) with an internal thread matching the outer diameter of the bottom of the filter element, one end of the circular bearing (4) is connected to a sleeve rod (12) through a pin (11), the sleeve rod (12) is provided with a swing hammer (13) that can reciprocate along the sleeve rod (12), and the end of the sleeve rod (12) is provided with a circular sheet-shaped base (14).

2. The electro-hydraulic control bracket filter element quick extraction device according to claim 1, characterized in that: The diameter of the base (6) is smaller than the inner diameter of the sleeve (7).

3. The electro-hydraulic control bracket filter element quick extraction device according to claim 1, characterized in that: The diameter of the sleeve (8) is greater than the diameter of the rod body (1).

4. The electro-hydraulic control bracket filter element quick extraction device according to claim 1, characterized in that: The diameter of the base (14) is greater than the diameter of the swing hammer (13).

5. The electro-hydraulic control bracket filter element quick extraction device according to claim 1, characterized in that: The connecting end of the sleeve rod (12) and the circular bearing (4) is a U-shaped opening, pin holes are provided on both sides of the U-shaped opening, an opening is provided in the flat center of the end of the pin shaft (11), the end of the pin shaft (11) is inserted into the U-shaped opening of the sleeve rod, and connected via a rod-shaped circular stop pin.

6. The electro-hydraulic control bracket filter element quick extraction device according to claim 1, characterized in that: Rod body 1 (1), rod body 2 (2) and rod body 3 (3) are located on the same horizontal plane.

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