Water-cooled furnace cover adjusting device and boiler equipment

Abstract

The utility model relates to the technical field of boilers, and particularly discloses a water-cooled furnace cover adjusting device and boiler equipment thereof, and the water-cooled furnace cover adjusting device comprises a supporting seat, an adjusting mechanism and a full-hydraulic driving mechanism. The supporting seat is used for supporting the furnace cover, and a moving groove is formed in the supporting seat. The adjusting mechanism comprises a bearing seat, a bearing and a driving arm. The driving arm is connected with one end of the bearing through key connection, a plurality of connecting pieces are arranged on the driving arm, the connecting pieces are movably connected with the top of the furnace cover, and motion control over the furnace cover is achieved. The full-hydraulic driving mechanism is composed of hydraulic cylinders, a first driving oil way and a second driving oil way, wherein the hydraulic cylinders comprise the first hydraulic cylinder and the second hydraulic cylinder. And the hydraulic cylinders are connected with the moving grooves through rollers on piston rods to drive the furnace cover to move. And the first hydraulic cylinder is a lifting hydraulic cylinder and can lift or descend a piston rod to control the action of the driving arm. And the second hydraulic cylinder is a rotary hydraulic cylinder, so that rotary adjustment of the furnace cover is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler devices, in particular to a water-cooled furnace cover regulating device and boiler equipment thereof. Background Art

[0002] The water-cooled furnace cover is mainly used to close the water-cooled furnace cover. It consists of a steel structure frame and a tubular cooling plate. This structure also supports the tubular exhaust elbow. The cooling plate is supplied with water by a water supply pipe located on the outer diameter. A conical collar is set in the center hole of the furnace cover to place a refractory ring with a hole. The electrode passes through this hole for lifting and lowering. The lifting of the furnace cover is generally connected to the suspension beam of the lifting furnace cover through a four-point connection. The electric winch or hydraulic cylinder drives the connecting rod mechanism to lift the furnace cover.

[0003] The lifting and rotating functions of the water-cooled furnace cover are extremely important in the metallurgical industry. They not only provide channels for loading and unloading, but also control the gas flow and pressure in the furnace by adjusting the degree of opening of the furnace cover, provide operating space, and ensure operational safety and equipment maintenance, thus promoting the efficient progress of the steelmaking process and the safe operation of the equipment.

[0004] In the patent "A furnace cover lifting and rotating device" (publication number CN210886137U, hereinafter referred to as prior art 1), a furnace cover lifting and rotating device is disclosed, and its structure includes components such as a two-way bracket, a horizontal bracket and a vertical threaded rod. When hoisting the furnace cover, the furnace cover is safely fixed by the cooperation of the hydraulic control cylinder and the side claws. At the same time, the furnace cover can be moved up or down by rotating the vertical threaded rod, and lubricating oil is injected using the lubrication component to meet the lubrication requirements. The setting of the bottom bracket makes the operation more convenient, and the overall design takes into account factors such as structural stability, safety and easy operation; the furnace cover lifting mechanism in prior art 1 contains many mechanical parts, which need maintenance during operation and need to be regularly injected with lubricating oil; for heavier furnace covers, its lifting and rotating is still dangerous, and it is impossible to lift and rotate heavier furnace covers; and there is also a problem of movement stability when the mechanical structure and hydraulic pressure are combined. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a water-cooled furnace cover adjustment device and a boiler device thereof, so as to solve the problem that the existing furnace cover lifting and adjusting mechanism adopts gears or other mechanical structures combined with hydraulic transmission and has insufficient stability.

[0006] In the first aspect, the embodiment of the utility model provides a water-cooled furnace cover adjustment device, including a support seat, an adjustment mechanism and a full hydraulic drive mechanism; the support seat is used to support the furnace cover, and the support seat is provided with a motion groove, and the motion groove is a combination of a straight line and a curve; the adjustment mechanism includes a bearing seat and a bearing and a drive arm arranged in the bearing seat; the drive arm is connected to one end of the bearing through a key connection in a transmission connection; the drive arm is provided with a plurality of connecting members evenly arranged at intervals, and the connecting members are movably connected to the top of the furnace cover; the full hydraulic drive mechanism includes a hydraulic cylinder, a first drive oil circuit and a second drive oil circuit; the hydraulic cylinder includes a first hydraulic cylinder and a second hydraulic cylinder; the head ends of the first drive oil circuit and the second drive oil circuit are connected to the oil tank through a pipeline, and the ends of the first drive oil circuit and the second drive oil circuit are respectively connected to the first hydraulic cylinder and the second hydraulic cylinder through pipelines; the piston rods carried by the first hydraulic cylinder and the second hydraulic cylinder are provided with rollers; the rollers are arranged in the motion groove; the first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the bearing seat in a transmission shaft.

[0007] Preferably, the first hydraulic cylinder and the second hydraulic cylinder drive the piston rods carried by them, and the rollers arranged on the piston rods move in the movement grooves.

[0008] Preferably, the first hydraulic cylinder is a lifting hydraulic cylinder; the lifting hydraulic cylinder drives the driving arm to perform lifting or lowering actions through its piston rod and hydraulic pressure.

[0009] Preferably, the second hydraulic cylinder is a rotary hydraulic cylinder; the rotary hydraulic cylinder and the bearing seat are rotary hinged via a shaft sleeve.

[0010] Preferably, the first hydraulic cylinder and the second hydraulic cylinder are connected to the first driving oil circuit and the second driving oil circuit respectively through a three-position four-way valve.

[0011] Preferably, the lifting hydraulic cylinder operates before the rotating hydraulic cylinder.

[0012] Preferably, a filter is provided between the oil circuits of the first drive oil circuit and the second drive oil circuit; the filter comprises a coarse filter and a fine filter; particles or pollutants are captured between the oil circuits of the first drive oil circuit and the second drive oil circuit by the coarse filter and the fine filter.

[0013] Preferably, the movable connection is a hinge; the hinge is achieved by a hinge or a hinge pin.

[0014] Preferably, it also includes a buffer device; the buffer device seals part of the oil between the piston and the cylinder cover of the first hydraulic cylinder and the second hydraulic cylinder through the piston rod when the piston rod moves to the end of its stroke.

[0015] Preferably, it further comprises a sealing device; the sealing device comprises a sealing ring and a retaining ring; the sealing ring and the retaining ring seal the position of the piston and the piston rod.

[0016] In a second aspect, a boiler device is provided, comprising a water-cooled furnace cover adjusting device as described in any one of the above items.

[0017] The utility model provides a water-cooled furnace cover adjustment device and a boiler device thereof, which have the following beneficial effects:

[0018] First of all, the design of the support seat ensures the stable support of the furnace cover, while the motion groove on the support seat provides a variety of motion path options, so that the furnace cover can move flexibly in different directions. The combined design of the bearing seat, bearing and drive arm of the adjustment mechanism ensures the accurate adjustment of the furnace cover position, and the movable connection between the connecting piece and the furnace cover makes the adjustment process more stable and reliable. Most importantly, the introduction of the full hydraulic drive mechanism further enhances the adjustment ability of the device. The design of the hydraulic cylinder enables the lifting and rotation of the furnace cover to be precisely controlled, thus meeting the needs under different working conditions. Lifting and rotation are both achieved through hydraulic drive. For rotation, the rotating hydraulic cylinder is connected to the slewing mechanism in the form of an articulation, eliminating part of the transmission mechanism in the middle, making the transmission simple and energy-saving. The full hydraulic drive reduces the number of hydraulic cylinders and the mechanical vibration during the transmission process, which is conducive to improving the stability of the transmission; in addition, the use of the full hydraulic drive can greatly improve the operation stability of the entire system, thereby increasing the service life of the steelmaking furnace. In summary, this water-cooled furnace cover adjustment device not only improves the operational flexibility and accuracy of the water-cooled furnace, but also enhances its safety and stability, providing reliable protection for industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for use in the embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the utility model.

[0020] Figure 1 It is a schematic diagram of the structure of a water-cooled furnace cover regulating device;

[0021] Figure 2 It is a schematic diagram of the structure of a water-cooled furnace cover adjustment device from another angle;

[0022] Figure 3 It is a schematic diagram of the structure and hydraulic principle of a water-cooled furnace cover adjustment device;

[0023] Parts and numbers in the picture:

[0024] 1-lifting hydraulic cylinder, 2-rotating hydraulic cylinder, 3-key connection, 4-driving arm, 5-connecting piece, 6-furnace cover, 7-rotating hinge, 8-shaft sleeve, 9-hinge, 10-bearing seat, 11-oil tank, 12-first coarse filter, 25-second coarse filter; 13-first hydraulic motor, 20-second hydraulic motor, 26-third hydraulic motor; 14-first one-way back pressure valve, 15-second one-way back pressure valve, 19-third one-way back pressure valve, 21-fourth one-way back pressure valve, 22-fifth one-way back pressure valve, 31- The sixth one-way back-pressure valve; 16-two-position two-way valve; 17-first overflow valve, 27-second overflow valve; 18-fine filter; 23-accumulator; 24-first pressure gauge, 29-second pressure gauge; 28-manual stop valve; 30-two-position four-way valve; 32-first three-position four-way valve, 33-second three-position four-way valve; 34-first hydraulic cylinder, 35-second hydraulic cylinder; 41-first drive oil circuit, 42-second drive oil circuit; 51-first oil tank, 52-second oil tank, 53-third oil tank, 54-fourth oil tank. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and the various features in the embodiments can be combined with each other, all within the scope of protection of the utility model.

[0026] Example 1

[0027] See also Figures 1 to 3 The utility model provides a water-cooled furnace cover adjustment device, including a support seat, an adjustment mechanism and a full hydraulic drive mechanism; the support seat is used to support the furnace cover 6, and the support seat is provided with a motion groove, and the motion groove is a combination of a straight line and a curve; the adjustment mechanism includes a bearing seat 10 and a bearing and a drive arm 4 arranged in the bearing seat; the drive arm 4 is transmission-connected to one end of the bearing through a key connection 3; the drive arm 4 is provided with a plurality of connecting members 5 evenly arranged at intervals, and the connecting member 5 is movably connected to the top of the furnace cover 6; the full hydraulic drive mechanism includes a hydraulic cylinder, The first driving oil circuit 41 and the second driving oil circuit 42; the hydraulic cylinder includes the first hydraulic cylinder 34 and the second hydraulic cylinder 35; the first end of the first driving oil circuit 41 and the second driving oil circuit 42 is connected to the oil tank 11 through a pipeline, and the end of the first driving oil circuit 41 and the second driving oil circuit 42 is respectively connected to the first hydraulic cylinder 34 and the second hydraulic cylinder 35 through a pipeline; the piston rods carried by the first hydraulic cylinder 34 and the second hydraulic cylinder 35 are provided with rollers; the rollers are arranged in the motion groove; the first hydraulic cylinder 34 and the second hydraulic cylinder 35 are respectively connected to the bearing seat through a transmission shaft. The lifting and rotation of the furnace cover 6 utilize the motion groove on the support seat. In the full hydraulic drive, a head is arranged at the end of the extended end of the selected hydraulic cylinder, and the plunger connected to the head of the hydraulic cylinder is replaced with a roller, and the roller rolls along the motion groove. When the working fluid pushes the plunger to move upward and the roller is in the straight section at the lower end of the motion groove, the furnace cover 6 rises; when the roller enters the curved section at the upper end of the motion groove, the furnace cover 6 rises and rotates. The shape of the curve segment should be set so that the acceleration of the system is small when the furnace cover rotation starts and stops.

[0028] The first driving oil circuit 41 and the second driving oil circuit 42 are both ensured by the oil supply of the oil circuit through the hydraulic motor 26; since the lifting of the steel furnace cover 6 is a reciprocating motion up and down, the upward load is large and the speed is relatively slow; the downward load is small and the speed is relatively fast; the rotational motion is driven by the same weight and is completed by two left and right cylinders, so a single-piston rod hydraulic cylinder is selected; the material of the piston can be selected from ductile iron; the rod body is a solid rod; the rod is connected by welding; the material of the piston rod can be 45 steel quenched and tempered, and the piston rod is quenched to make it stronger.

[0029] The first hydraulic cylinder 34 and the second hydraulic cylinder 35 drive the piston rods they carry, and the rollers arranged on the piston rods move in the motion grooves; the first hydraulic cylinder 34 is a lifting hydraulic cylinder 1; the lifting hydraulic cylinder 1 drives the driving arm 4 to perform lifting or lowering actions through its piston rod and hydraulic pressure.

[0030] Preferably, the second hydraulic cylinder 35 is a rotary hydraulic cylinder 2; the rotary hydraulic cylinder 2 and the bearing seat 10 are rotary hinged 7 through a shaft sleeve 8; the rotating part is driven by a hydraulic cylinder, and the end of the piston rod is connected to the end of the driving arm 4 by a hinge 9 to complete the rotation of the furnace cover 6, and the first hydraulic cylinder 34 and the second hydraulic cylinder 35 are respectively connected to the first drive oil circuit 41 and the second drive oil circuit 42 through a three-position four-way valve.

[0031] A filter is provided between the first drive oil circuit 41 and the second drive oil circuit 42; the filter includes a coarse filter and a fine filter; particles or pollutants are captured between the first drive oil circuit 41 and the second drive oil circuit 42 by the coarse filter and the fine filter. The fine filter is used to filter smaller particles or finer pollutants. Such a design can improve the reliability and performance of the system.

[0032] The movable connection is a hinge 9; the hinge 9 is realized by a hinge or a hinge pin. The hinge 9 connection is usually used in situations where a flexible connection is required to adapt to movement or adjustment, and drives the furnace cover 6 to be lifted by a relatively gentle lifting.

[0033] The regulating mechanism further comprises a buffer device, which seals part of the oil between the piston and the cylinder head of the first hydraulic cylinder 34 and the second hydraulic cylinder 35 through the piston rod when the piston rod moves to the end of the stroke. The working principle of the buffer device is to use the piston or cylinder barrel to seal part of the oil between the piston and the cylinder head when the piston or cylinder barrel moves to the end of the stroke, forcing it to be squeezed out from the small hole or slit to generate a large resistance, so that the working parts are braked and the movement speed is gradually slowed down, so as to avoid the piston and the cylinder head from colliding with each other.

[0034] The regulating mechanism also includes a sealing device; the sealing device includes a sealing ring and a retaining ring; the sealing ring and the retaining ring seal the position of the piston and the piston rod; an "o"-shaped sealing ring and a retaining ring are selected for double-acting sealing, and an SA-type dust ring is used as the dust ring; the use of the SA-type dust ring in the water-cooled furnace cover regulating device brings the advantages of wear resistance, excellent sealing performance, strong adaptability, and easy installation and replacement, effectively protecting key components and extending service life, while keeping the hydraulic system clean, reducing leakage and loss, and providing important guarantees for the reliable operation of the water-cooled furnace.

[0035] Example 2

[0036] See also Figure 3, provides a water-cooled furnace cover regulating device and a hydraulic system of its regulating equipment, a hydraulic system, each component is connected by an oil pipe, starting from a main oil tank 11, the main oil circuit passes through a first coarse filter 12 to separate into two branches, a first hydraulic motor 13 and a first one-way back pressure valve 14, a second one-way back pressure valve 15 are arranged in sequence on the branch, and the two branches converge to the main oil circuit after passing through their components; the one-way back pressure valve has the characteristics of a combination of a one-way valve and a back pressure valve. When the system back pressure is lower than the set back pressure, the diaphragm closes the pipeline under the action of a spring to prevent fluid backflow; when the system back pressure exceeds the set back pressure, the diaphragm is compressed, the spring is compressed, the pipeline is connected, and the fluid is allowed to pass through the back pressure valve. The main oil circuit is divided into two branches after passing through a fine filter 18. The first branch is connected to a first overflow valve 17 and a two-position two-way valve 16 and then converges into the first oil tank 51. The branch is used to control the pressure of the main oil circuit. When the pressure is too high and the oil flows back, the pressure is shared by the main oil circuit. The second branch is divided into a branch to the accumulator 23 through a third one-way back pressure valve 19. A first pressure gauge 24 is set in one branch to detect the pressure of the accumulator 23. When the system back pressure exceeds the set value, the overflow valve will open and the excess hydraulic oil will flow back to the tank to protect the system from overpressure damage.

[0037] The accumulator 23 branches out into two oil circuits, the first branch of which is provided with a fourth one-way back-pressure valve 21 and a second hydraulic motor 20 to a second oil tank 52, and the second branch is provided with a fifth one-way back-pressure valve 22 to a third oil tank 53; when the system back pressure exceeds the set value, the accumulator 23 will open and the excess hydraulic oil will flow to the second oil tank 52 in the accumulator 23; when the system back pressure is lower than the set value, the fourth one-way back-pressure valve 21 will open, and the third hydraulic motor 26 will pump oil to the main oil circuit, and the excess oil will be recovered and recycled by the third oil tank 53.

[0038] The main oil circuit branches out into a branch after passing through a two-position four-way valve 30. The branch is divided into two parts. One is connected to the manual stop valve 28 and is provided with a second pressure gauge 29 at the end. The main function of this branch is to monitor and adjust the pressure of the system; the manual stop valve 28 is used to manually control the flow of oil and is used to shut down the hydraulic system in an emergency; one branch passes through the second overflow valve 27 and has the third hydraulic motor 26 and the second coarse filter 25 at both ends to the fourth oil tank 54; after pressure detection, the circulating oil is sent to the first three-position four-way valve 32 and the second three-position four-way valve 33 through a branch and the third hydraulic motor 26 for the operation of the hydraulic system. The main oil circuit is further divided into two branches, one of which is connected to the first three-position four-way valve 32 to directly drive the first hydraulic cylinder 34; the other is connected to the second three-position four-way valve 33 through a sixth one-way back pressure valve 31; the component equipped with the third hydraulic motor 26 is also connected to the first three-position four-way valve 32 and the second three-position four-way valve 33; through the setting of the sixth one-way back pressure valve 31, the hydraulic system first drives the lifting part and then drives the rotating part.

[0039] Example 3

[0040] Second, see Figures 1 to 3 , providing a boiler equipment including a water-cooled furnace cover adjustment device as described in any of the above embodiments; since the lifting and rotating hydraulic system supplies the lifting and rotating hydraulic cylinders with pressure medium to generate lifting force, the lifting force and the load are balanced, and the lifting and rotating are both uniform. Therefore, a balancing circuit needs to be set, and a pressure control circuit regulated by a one-way back pressure valve is set in the hydraulic cylinder pipeline to facilitate the adjustment of the system's balancing force; in order to prevent the fluctuation of the hydraulic system pressure during the lifting process and increase the stability of the lifting force, the entire system adopts a one-way throttling speed control circuit in the oil inlet; during the lifting process, the hydraulic system pressure is required to be constant and the flow rate is large, so an accumulator 23 is set in the circuit to replenish the system's leakage at any time.

[0041] Example 4

[0042] See also Figures 1 to 3 ,

[0043] The embodiment of the utility model provides a water-cooled furnace cover adjustment device and its adjustment equipment. The design of the support seat ensures the stable support of the furnace cover, and the motion groove on the support seat provides a variety of motion path options, so that the furnace cover can move flexibly in different directions. The combined design of the bearing seat, bearing and drive arm of the adjustment mechanism ensures the accurate adjustment of the furnace cover position, and the movable connection between the connecting piece and the furnace cover makes the adjustment process more stable and reliable. Most importantly, the introduction of the full hydraulic drive mechanism further enhances the adjustment ability of the device, and the design of the hydraulic cylinder enables the lifting and rotation of the furnace cover to be accurately controlled, thereby meeting the needs under different working conditions. Lifting and rotation are both achieved through hydraulic drive. For rotational movement, the rotating hydraulic cylinder 2 is connected to the slewing mechanism through the form of hinge 9, eliminating part of the transmission mechanism in the middle, making the transmission simple and energy-saving. The full hydraulic drive reduces the number of hydraulic cylinders and the mechanical vibration during the transmission process, which is conducive to improving the stability of the transmission; in addition, the use of the full hydraulic drive can greatly improve the operation stability of the entire system, thereby increasing the service life of the steelmaking furnace. In summary, this water-cooled furnace cover adjustment device not only improves the operational flexibility and accuracy of the water-cooled furnace, but also enhances its safety and stability, providing reliable guarantee for industrial production.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A water-cooled furnace cover adjustment device, characterized in that: It comprises a support seat, an adjustment mechanism and a fully hydraulic drive mechanism; the support seat is used to support the furnace cover (6), and a movement groove is provided on the support seat, and the movement groove is a combination of a straight line and a curve; The adjustment mechanism comprises a bearing seat (10), a bearing arranged in the bearing seat (10), and a driving arm (4); the driving arm (4) is transmission-connected to one end of the bearing via a key connection (3); the driving arm (4) is provided with a plurality of connecting members (5) evenly spaced at intervals, and the connecting members (5) are movably connected to the top of the furnace cover (6); The fully hydraulic drive mechanism comprises a hydraulic cylinder, a first drive oil circuit (41) and a second drive oil circuit (42); the hydraulic cylinder comprises a first hydraulic cylinder (34) and a second hydraulic cylinder (35); the head ends of the first drive oil circuit (41) and the second drive oil circuit (42) are connected to the oil tank (11) through a pipeline, and the ends of the first drive oil circuit (41) and the second drive oil circuit (42) are respectively connected to the first hydraulic cylinder (34) and the second hydraulic cylinder (35) through pipelines; the piston rods carried by the first hydraulic cylinder (34) and the second hydraulic cylinder (35) are provided with rollers; the rollers are arranged in the motion groove; the first hydraulic cylinder (34) and the second hydraulic cylinder (35) are respectively connected to the bearing seat (10) through transmission shafts.

2. The water-cooled furnace cover adjusting device according to claim 1, characterized in that: The first hydraulic cylinder (34) and the second hydraulic cylinder (35) drive the piston rods carried by them, and the rollers arranged on the piston rods move in the movement grooves; The first hydraulic cylinder (34) is a lifting hydraulic cylinder (1); the lifting hydraulic cylinder (1) drives the driving arm (4) through its piston rod and hydraulic pressure to perform a lifting or lowering action.

3. The water-cooled furnace cover adjusting device according to claim 2, characterized in that: The second hydraulic cylinder (35) is a rotary hydraulic cylinder (2); the rotary hydraulic cylinder (2) and the bearing seat (10) are rotary hinged (7) via a shaft sleeve (8).

4. The water-cooled furnace cover adjusting device according to claim 1, characterized in that: The first hydraulic cylinder (34) and the second hydraulic cylinder (35) are respectively connected to the first drive oil circuit (41) and the second drive oil circuit (42) via a three-position four-way valve.

5. The water-cooled furnace cover adjusting device according to claim 1, characterized in that: A filter is provided between the oil circuits of the first drive oil circuit (41) and the second drive oil circuit (42); the filter comprises a coarse filter and a fine filter; particles or pollutants are captured between the oil circuits of the first drive oil circuit (41) and the second drive oil circuit (42) by the coarse filter and the fine filter.

6. The water-cooled furnace cover adjusting device according to claim 3, characterized in that: The lifting hydraulic cylinder (1) operates before the rotating hydraulic cylinder (2).

7. The water-cooled furnace cover adjusting device according to claim 1, characterized in that: The movable connection is a hinge (9); the hinge (9) is realized by a hinge or a hinge pin.

8. The water-cooled furnace cover adjusting device according to claim 1, characterized in that: It also includes a buffer device, which seals part of the oil between the piston and the cylinder head of the first hydraulic cylinder (34) and the second hydraulic cylinder (35) through the piston rod when the piston rod moves to the end of its stroke.

9. The water-cooled furnace cover adjusting device according to claim 8, characterized in that: It also includes a sealing device; the sealing device includes a sealing ring and a retaining ring; the sealing ring and the retaining ring seal the position of the piston and the piston rod.

10. A boiler equipment, characterized in that: It comprises a water-cooled furnace cover adjusting device as described in any one of claims 1 to 9.

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