Tipping bucket filter vehicle convenient to control

Abstract

The utility model relates to the field of filtering and separating equipment. A tipping bucket filter vehicle convenient to control comprises a material containing box and universal wheels used for assisting the material containing box in moving, an L-shaped plate is arranged in the material containing box, the vertical portion of the L-shaped plate divides the interior of the material containing box into a left cavity and a right cavity, the vertical portion of the L-shaped plate is arranged to be a filter screen plate, reinforcing plates are arranged on the two sides of the L-shaped plate, and the reinforcing plates are arranged on the two sides of the L-shaped plate. And the tops of the L-shaped plates are clamped to the two sides of the material containing box through clamping assemblies, the outer side face of the material containing box is provided with a discharge valve communicating with the right cavity, and a heating mechanism is arranged in the box wall of the material containing box. The waste oil filtering device has the beneficial effects that the condition that dirty oil is solidified can be effectively avoided, the position of the filtering structure can be randomly adjusted, and meanwhile, the arrangement box can be quickly overturned and inclined, so that the aim of fully filtering the dirty oil is fulfilled, and the filtering treatment efficiency of waste materials is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter separation equipment field, concretely relates to a convenient control's tipping bucket filter car. BACKGROUND

[0002] The existing filter car does not have the function of preventing solidification, and the dirty oil is prone to solidification and adhesion due to temperature reduction during filtration treatment, thereby causing difficult cleaning problems, additional processing time and cost, in addition, the internal filter structure of the existing filter car cannot be flexibly adjusted, so that it cannot cope with different working conditions of dirty oil treatment, thereby causing poor actual solid-liquid separation effect, and the waste cleaning cannot be quickly and effectively carried out due to the inconvenience of disassembly. SUMMARY

[0003] The utility model discloses a convenient control's tipping bucket filter car, not only can effectively avoid the situation that the dirty oil appears solidification, but also can adjust the position of filter structure at will, realize the effect of full filtration of dirty oil.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A convenient control's tipping bucket filter car, including the material box and the universal wheel for assisting the material box to move, the inside of material box is equipped with L type board, the vertical part of L type board will be divided into left cavity and right cavity in the material box, the vertical part of L type board is set up as filter screen, both sides of L type board are equipped with reinforcing plate, the top of L type board is clamped in both sides of material box through clamping assembly, the outside of material box is equipped with the exhaust valve that communicates with right cavity, the inside of the tank wall of material box is equipped with heating mechanism.

[0006] Further, it further includes a frame, a hydraulic cylinder and a foot pedal type driving mechanism, the universal wheel is located at the bottom of the frame, the right side of the material box is hinged on the frame through the first hinge, the fixed end of the hydraulic cylinder is hinged on the frame, the piston end of the hydraulic cylinder is hinged on the bottom of the material box, the foot pedal type driving mechanism includes a base, a foot pedal, a second hinge, a hydraulic oil tank, an oil outlet pipe, a spring and a plunger, the base is horizontally arranged on the side surface of the frame, the side surface of the foot pedal is hinged on the base through the second hinge, the hydraulic oil tank is arranged on the upper surface of the base, the top end of the plunger is connected to the lower surface of the foot pedal, the bottom end of the plunger is inserted into the hydraulic oil tank, the hydraulic oil tank is communicated with the hydraulic cylinder through the oil outlet pipe, one end of the spring is connected to the foot pedal, the other end of the spring is connected to the upper surface of the base.

[0007] Further, the outer side of the hydraulic cylinder is provided with an oil storage tank, the base is internally provided with an oil inlet channel, an oil outlet channel and a pressure relief channel, one end of the oil inlet channel and the oil outlet channel is communicated in the hydraulic oil tank, the other end of the oil inlet channel is communicated with the oil storage tank through an oil inlet pipe, the other end of the oil outlet channel is connected with an oil outlet pipe, the oil inlet channel is internally provided with a first expansion section, the first expansion section is internally provided with a first sealing ball, the cross-sectional area of the first sealing ball is larger than that of the two ends of the oil inlet channel and smaller than that of the first expansion section 9l, the oil outlet pipe is internally provided with a second expansion section, the second expansion section is internally provided with a second sealing ball, the cross-sectional area of the second sealing ball is larger than that of the two ends of the oil outlet pipe and smaller than that of the second expansion section, one end of the pressure relief channel is communicated with the hydraulic cylinder through a first pressure relief pipe, the other end of the pressure relief channel is communicated with the oil storage tank through a second pressure relief pipe, the side surface of the base is provided with a screw hole communicated into the pressure relief channel, a screw rod is screwed in the screw hole, one end of the screw rod is located outside the screw hole and is provided with a handle, the other end of the screw rod is provided with a third sealing ball.

[0008] Further, the clamping assembly comprises two horizontal rods and a fixing clamp, the two horizontal rods are arranged in parallel on the two sides of the material placing box, and the top of the L-shaped plate is clamped on the horizontal rods through the fixing clamp.

[0009] Further, the two horizontal rods are respectively held by a hoop, the two ends of the hoop are connected together through a screw rod and a nut, a pressing pad sleeve is sleeved on the screw rod, and an adjusting handle is hinged to the top of the screw rod.

[0010] Further, the end of the horizontal rod is provided with an auxiliary handle.

[0011] Further, the top of the L-shaped plate is provided with a pulling handle.

[0012] Further, the universal wheel is provided with a brake pedal for braking rotation thereof.

[0013] Further, the heating mechanism is a plurality of electric heating pipes distributed in S-shaped structures, the outer side surface of the material placing box is provided with an explosion-proof temperature controller for controlling the electric heating pipes, the explosion-proof temperature controller is provided with an adjusting knob, and the explosion-proof temperature controller is connected with an explosion-proof plug through a wire.

[0014] The utility model discloses beneficial effects:

[0015] 1. When filtering waste containing sludge and oil, this filter cart can not only prevent the sludge and oil from solidifying through a heating mechanism, but also allows for easy adjustment of the position of the filter screen in the material box to achieve a thorough filtration of the sludge and oil. At the same time, the L-shaped plate can be quickly removed from the material box, making it easy to clean the waste adhering to the surface of the filter screen and to clean the waste residue after filtration.

[0016] 2. This utility model utilizes a foot-operated drive mechanism to form a simple drive for the hydraulic cylinder. The hydraulic cylinder drives the material box to tilt and rotate around the first hinge, thereby improving the filtration efficiency of waste materials. The overall operation is simple and convenient, and the stability and reliability are high. Attached Figure Description

[0017] Figure 1 This is a perspective view of a tipping filter truck that is easy to control according to this utility model.

[0018] Figure 2 This is a partial cross-sectional view of a tipping filter truck that is easy to control according to this utility model.

[0019] Figure 3 yes Figure 2 An enlarged structural diagram of part A in the diagram.

[0020] Figure 4 yes Figure 2 A partial sectional view of part A from a bottom-up angle.

[0021] Figure 5 This is an exploded view of the clamp structure.

[0022] Figure 6 This is a schematic diagram of the heating mechanism. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will now be described with reference to the accompanying drawings. Example 1

[0024] like Figure 1 and Figure 2 As shown, a controllable tipping filter truck includes a material storage box 1 and casters 2 for assisting the movement of the material storage box 1. The material storage box 1 is provided with an L-shaped plate 3. The vertical part of the L-shaped plate 3 divides the interior of the material storage box 1 into a left cavity 1a and a right cavity 1b. The vertical part of the L-shaped plate 3 is set as a filter screen plate 3a. The two sides of the L-shaped plate 3 are provided with reinforcing plates 3b. The top of the L-shaped plate 3 is clamped to the two sides of the material storage box 1 by a clamping assembly 4. The outer side of the material storage box 1 is provided with a discharge valve 5 communicating with the right cavity 1b. The inside of the box wall of the material storage box 1 is provided with a heating mechanism 6.

[0025] In the embodiment, the position of the L-shaped plate 3 in the material placing box 1 is adjusted first, then the waste is put into the left cavity 1a of the material placing box 1, then the L-shaped plate 3 is pushed to reduce the space of the cavity 1a, the waste oil in the waste is filtered through the filter screen plate 3a and flows to the right cavity 1b, and finally is discharged outward through the discharge valve 5 for unified collection.

[0026] It should be noted that, since the top of the L-shaped plate 3 is clamped on both sides of the material placing box 1 by the clamping assembly 4, and the reinforcing plate 3b is used to provide reinforcement for the L-shaped plate 3, the L-shaped plate 3 can be effectively prevented from being tilted and dumped, and the damage is resisted, thereby avoiding the solid waste in the waste from separating from the left cavity 1a and affecting the filtering treatment of the waste oil.

[0027] It should be noted that, during the waste filtering treatment process, the heating mechanism 6 continuously heats the material placing box 1 to avoid the solidification of the waste oil, and prevent the waste oil from being difficult to recover and clean due to being stuck in the material placing box 1.

[0028] It should be noted that the L-shaped plate 3 can be quickly removed from the material placing box 1, which is convenient for cleaning the waste residues adhered to the surface of the filter screen plate 3a, and the L-shaped plate 3 is also convenient for collecting and taking out the filtered waste residues from the material placing box 1, thereby achieving the purpose of quickly cleaning the material placing box 1.

[0029] It can be understood that the universal wheel 2 is used to support and move the material placing box 1, so that the worker can quickly move the filter vehicle to the receiving position of the waste and the safe position of the filtering treatment, thereby reducing the time cost of the preparation work. Embodiment 2

[0030] As shown in Figure 1 , Figure 2 and Figure 3 , it further comprises a vehicle frame 7, a hydraulic cylinder 8 and a foot-driven mechanism 9, the universal wheel 2 is located at the bottom of the vehicle frame 7, the right side of the material placing box 1 is hinged to the vehicle frame 7 through a first hinge 10, the fixed end of the hydraulic cylinder 8 is hinged to the vehicle frame 7, the piston end of the hydraulic cylinder 8 is hinged to the bottom of the material placing box 1, the foot-driven mechanism 9 comprises a base 9a, a foot pedal 9b, a second hinge 9c, a hydraulic oil tank 9d, an oil outlet pipe 9e, a spring 9f and a plunger 9g, the base 9a is horizontally arranged on the side of the vehicle frame 7, the side of the foot pedal 9b is hinged to the base 9a through the second hinge 9c, the hydraulic oil tank 9d is arranged on the upper surface of the base 9a, the top end of the plunger 9g is connected to the lower surface of the foot pedal 9b, the bottom end of the plunger 9g is inserted into the hydraulic oil tank 9d, the hydraulic oil tank 9d is communicated with the hydraulic cylinder 8 through the oil outlet pipe 9e, one end of the spring 9f is connected to the foot pedal 9b, and the other end of the spring 9f is connected to the upper surface of the base 9a.

[0031] In the embodiment, the worker only needs to step on the foot pedal 9b, push the hydraulic oil in the hydraulic oil tank 9d through the plunger 9g, and the hydraulic oil flows into the hydraulic cylinder 8 through the oil outlet pipe 9e. The piston end of the hydraulic cylinder 8 is extended and jacks up the material placing box 1, so that the material placing box 1 is overturned around the first hinge 10, and the whole material placing box 1 is in an inclined state. Under the action of gravity, the waste oil in the left cavity 1a is filtered through the filter screen 3a and flows into the right cavity 1b. After the foot pedal 9b is released, the foot pedal 9b returns to the original position under the action of the deformation recovery of the spring 9f, so that the hydraulic oil quickly returns from the hydraulic cylinder 8 to the hydraulic oil tank 9d, and then the material placing box 1 quickly returns to the original position. The whole effectively improves the filtering and processing efficiency of the waste material and reduces the operation amount of the worker. Embodiment 3

[0032] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the outer side of the hydraulic cylinder 8 is provided with an oil storage tank 11, the base 9a is provided with an oil inlet channel 9h, an oil outlet channel 9i and a pressure relief channel 9j, one end of the oil inlet channel 9h and the oil outlet channel 9i is communicated in the hydraulic oil tank 9d, the other end of the oil inlet channel 9h is communicated with the oil storage tank 11 through an oil inlet pipe 9k, the other end of the oil outlet channel 9i is connected with the oil outlet pipe 9e, the oil inlet channel 9h is provided with a first expansion section 9l, the first expansion section 9l is provided with a first sealing ball 9m, the cross-sectional area of the first sealing ball 9m is greater than that of the two ends of the oil inlet channel 9h and less than that of the first expansion section 9l, the oil outlet pipe 9e is provided with a second expansion section 9n, the second expansion section 9n is provided with a second sealing ball 9o, the second sealing ball 9o is greater than the cross-sectional area of the two ends of the oil outlet pipe 9e and less than the cross-sectional area of the second expansion section 9n, one end of the pressure relief channel 9j is communicated with the hydraulic cylinder 8 through a first pressure relief pipe 9p, the other end of the pressure relief channel 9j is communicated with the oil storage tank 11 through a second pressure relief pipe 9q, the side surface of the base 9a is provided with a threaded hole 9r communicated into the pressure relief channel 9j, a first screw rod 9s is screwed in the threaded hole 9r, one end of the first screw rod 9s is located outside the threaded hole 9r and is provided with a handle 9t, and the other end of the first screw rod 9s is provided with a third sealing ball 9u.

[0033] The embodiment is based on Pascal's law of fluid statics, and is optimized for the injection or discharge of hydraulic oil of the hydraulic cylinder 8. Specifically, first, the operation only needs to repeatedly press and release the foot pedal 9b, and the up and down movement of the plunger 9g will cause the pressure change inside the hydraulic oil tank 9d. During this process, when the plunger 9g is in the rising state, the first sealing ball 9m will be lifted, the first sealing ball 9m will be separated from the inlet of the first expansion section 9l, the oil inlet channel 9h will be opened, and the hydraulic oil in the oil storage tank 11 will flow into the hydraulic oil tank 9d through the oil inlet pipe 9k and the oil inlet channel 9h in turn. When the plunger 9g is in the descending state, the first sealing ball 9m will be driven to descend, and the first sealing ball 9m will be attached to the inlet of the first expansion section 9l, forming a blockage of the oil inlet channel 9h by the first sealing ball 9m. The hydraulic oil in the hydraulic oil tank 9d will be pushed into the oil outlet channel 9i, and then delivered to the hydraulic cylinder 8 through the oil outlet pipe 9e. The piston end of the hydraulic cylinder 8 extends outward, and when the plunger 9g rises again, the hydraulic oil in the hydraulic cylinder 8 pushes the second sealing ball 9o in the opposite direction, so that the second sealing ball 9o is attached to the inlet of the second expansion section 9n, forming a blockage of the oil outlet pipe 9e by the second sealing ball 9o, preventing the hydraulic oil from flowing back. In this way, the piston end of the hydraulic cylinder 8 continuously extends, the material placing box 1 is adjusted to the appropriate inclination, and finally the material placing box 1 can always maintain the current inclination state without the need for the staff to continuously press the foot pedal 9b.

[0034] When the material placing box 1 needs to return to the original position, only the toe of the foot needs to push the handle 9t to drive the first screw 9s to rotate and move outward to the screw hole 9r. The third sealing ball 9u will open the pressure relief channel 9j, and the hydraulic oil in the hydraulic cylinder 8 will flow back to the oil storage tank 11 through the first pressure relief pipe 9p, the pressure relief channel 9j, and the second pressure relief pipe 9q, forming the discharge and recovery of the hydraulic oil, so that the piston end of the hydraulic cylinder 8 contracts, achieving the purpose of returning the material placing box 1 to the original position.

[0035] It should be understood that the hydraulic oil is mainly stored in the oil storage tank 11. The embodiment integrates the hydraulic cylinder 8 and the oil storage tank 11, making the overall structure of the filter vehicle more compact, which not only reduces the space occupation, but also enables the oil storage tank 11 to follow the hydraulic cylinder 8 to tilt and turn, better promoting the output of the hydraulic oil in the oil storage tank 11, and stabilizing the oil supply. Embodiment 4

[0036] As shown in Figure 1 , Figure 2 and Figure 5 , the clamping assembly 4 includes two horizontal rods 4a and a fixed clamp 4b. The two horizontal rods 4a are arranged in parallel on both sides of the material placing box 1, and the top of the L-shaped plate 3 is clamped on the horizontal rod 4a by the fixed clamp 4b.

[0037] The embodiment is a further limited implementation of the clamping assembly 4. The L-shaped plate 3 is clamped on the horizontal rod 4a by the fixed clamp 4b and can slide along the horizontal rod 4a to achieve stable adjustment effect and achieve the purpose of fully filtering dirty oil.

[0038] The two horizontal rods 4a are respectively embraced by the hoop 4c, the two ends of the hoop 4c are connected together by the second screw 4d and the nut 4e, the second screw 4d is sleeved with the pad 4f, and the top of the second screw 4d is hinged with the adjusting handle 4g.

[0039] The adjusting handle 4g is adjusted and pressed down to make the two ends of the hoop 4c further fit, and then the hoop 4c is locked on the horizontal rod 4a. When the material box 1 is inclined, the hoop 4c provides a support point for the fixed clamp 4b to limit the position of the L-shaped plate 3 and prevent the L-shaped plate 3 from moving freely. Only the fixed clamp 4b can hold the horizontal rod 4a to ensure the stable execution of the waste filtering operation.

[0040] The end of the horizontal rod 4a is provided with an auxiliary handle 12. The auxiliary handle 12 provides a gripping part of the filter vehicle for the staff to push and assist in tilting the filter vehicle, and quickly realize the receiving and filtering of waste.

[0041] The top of the L-shaped plate 3 is provided with a pull handle 3a. The pull handle 3a is used as a gripping part of the L-shaped plate 3 to quickly adjust and disassemble the L-shaped plate 3 by the staff.

[0042] The universal wheel 2 is provided with a brake pedal 2a for braking its rotation. The brake pedal 2a is used to prevent the filter vehicle from moving freely and avoid the waste from spilling out of the material box 1.

[0043] As shown in Figure 1 , Figure 2 and Figure 6 , the heating mechanism 6 is a plurality of electric heating pipes arranged in S-shaped structure, the outer side of the material box 1 is provided with an explosion-proof temperature controller 13 for controlling the electric heating pipe, the explosion-proof temperature controller 13 is provided with an adjusting knob 14, and the explosion-proof temperature controller 13 is connected with an explosion-proof plug 16 through a wire 15. The electric heating pipes in S-shaped structure are installed in each wall of the material box 1 to achieve overall heating of the internal space of the material box 1, so that the dirty oil can receive heat from all directions to avoid solidification of the dirty oil; the adjusting knob 14 of the explosion-proof temperature controller 13 is used to adjust the temperature of the electric heating pipe, and the explosion-proof plug 16 is used to connect to the external power supply and prevent sparks or arcs from occurring when connected to the power supply, thereby avoiding explosion accidents caused by ignition of the dirty oil.

[0044] In combination with Figures 1 to 6The utility model discloses a convenient to control's tipping bucket filter car in operation uses, and specific includes following operation steps:

[0045] S1, processing preparation: first adjust the position of L type board 3 in the material placing box 1, then pour the waste that needs to be filtered into the left cavity 1a of material placing box 1, and the staff grasps auxiliary handle 12, and the filter car is moved to the safe discharge processing position through auxiliary handle 12, then grasps the pull handle 3a, and the L type board 3 is adjusted along the horizontal rod 4a through the pull handle 3a, and the space size of left cavity 1a and right cavity 1b is divided, then let the clamp 4c move to the side of fixed clamp 4b along the horizontal rod 4a, and the clamp 4c is locked on the horizontal rod 4a by adjusting handle 4g, and the clamp 4c provides the limiting point for L type board 3, then the brake pedal 2a is stepped on, and it limits the rotation of universal wheel 2, avoids the filter car to move at will;

[0046] S2, power supply heating: the plug of explosion-proof latch 16 is connected to external power supply, and the plug of explosion-proof latch 16 and socket are mutually engaged, and the electric heating tube is provided with electric energy, then the temperature control ware 13 of explosion-proof is controlled to the temperature rise of electric heating tube and heats, to heat material placing box 1;

[0047] S3, filtering treatment: the staff first pushes handle 9t with the tip of the foot, confirms that the third sealing ball 9u has blocked the pressure relief channel 9j, and repeatedly steps on the footboard 9b with the tip of the foot, and the hydraulic oil in the oil storage tank 11 flows to the hydraulic cylinder 8 in sequence through the oil inlet pipe 9k, oil inlet channel 9h, hydraulic oil tank 9d, oil outlet channel 9i, oil outlet pipe 9e, so that the piston end of the hydraulic cylinder 8 extends, and the material placing box 1 is driven to overturn with the first hinged part 10 as the center, at this time, the material placing box 1 is in the state of inclination, under the action of gravity, the waste oil in waste continuously filters through filter screen plate 3a and automatically flows to right cavity 1b;

[0048] S4, collection treatment: open the discharge valve 5 communicated with right cavity 1b, and the waste oil is discharged to the outside through the discharge valve 5 and external pipeline, so as to be collected uniformly, then grasps the pull handle 3a, and the L type board 3 is adjusted along the horizontal rod 4a, and the L type board 3 moves to the left area of material placing box 1, and the space size of left cavity 1a is reduced, and then the waste is compressed, and further filtering treatment is realized;

[0049] S5, recycling processing: the staff with the tip of the handle 9t reverse push, drive the first screw 9s out of the screw hole 9r, and then make the third sealing ball 9u open the pressure relief channel 9j, the hydraulic cylinder 8 in the hydraulic oil through the first relief pipe 9p, pressure relief channel 9j, second relief pipe 9q back to the oil tank 11, the piston end of the hydraulic cylinder 8 no longer lift the placement box 1, the placement box 1 returns to the original position, then pull the handle 3a from the placement box 1 inside the L type plate 3 out, collect and clean the waste residue in the placement box 1, complete a waste filter processing job.

Claims

1. A controllable tipping filter cart, comprising a material storage box (1) and casters (2) for assisting the movement of the material storage box (1), characterized in that: The material box (1) is provided with an L-shaped plate (3). The vertical part of the L-shaped plate (3) divides the inside of the material box (1) into a left cavity (1a) and a right cavity (1b). The vertical part of the L-shaped plate (3) is set as a filter screen plate (3a). The two sides of the L-shaped plate (3) are provided with reinforcing plates (3b). The top of the L-shaped plate (3) is clamped to the two sides of the material box (1) by a clamping assembly (4). The outer side of the material box (1) is provided with a discharge valve (5) that communicates with the right cavity (1b). The inside of the box wall of the material box (1) is provided with a heating mechanism (6).

2. The easily controllable tipping filter truck according to claim 1, characterized in that: It also includes a frame (7), a hydraulic cylinder (8), and a foot-operated drive mechanism (9). The caster wheel (2) is located at the bottom of the frame (7). The right side of the storage box (1) is hinged to the frame (7) via a first hinge (10). The fixed end of the hydraulic cylinder (8) is hinged to the frame (7), and the piston end of the hydraulic cylinder (8) is hinged to the bottom of the storage box (1). The foot-operated drive mechanism (9) includes a base (9a), a foot pedal (9b), a second hinge (9c), a hydraulic oil tank (9d), an oil outlet pipe (9e), a spring (9f), and a plunger (9g). The base (9a) The foot pedal (9b) is horizontally mounted on the side of the frame (7). The side of the foot pedal (9b) is hinged to the base (9a) via a second hinge (9c). The hydraulic oil tank (9d) is mounted on the upper surface of the base (9a). The top end of the plunger (9g) is connected to the lower surface of the foot pedal (9b). The bottom end of the plunger (9g) is inserted into the hydraulic oil tank (9d). The hydraulic oil tank (9d) is connected to the hydraulic cylinder (8) via an oil outlet pipe (9e). One end of the spring (9f) is connected to the foot pedal (9b), and the other end of the spring (9f) is connected to the upper surface of the base (9a).

3. The easily controllable tipping filter truck according to claim 2, characterized in that: The hydraulic cylinder (8) is surrounded by an oil reservoir (11). The base (9a) is provided with an oil inlet channel (9h), an oil outlet channel (9i), and a pressure relief channel (9j). One end of the oil inlet channel (9h) and the oil outlet channel (9i) is connected to the hydraulic oil tank (9d). The other end of the oil inlet channel (9h) is connected to the oil reservoir (11) through an oil inlet pipe (9k). The other end of the oil outlet channel (9i) is connected to the oil outlet pipe (9e). The oil inlet channel (9h) is provided with a first expansion section (9l). The first expansion section (9l) is provided with a first sealing ball (9m). The cross-sectional area of ​​the first sealing ball (9m) is larger than the cross-sectional area of ​​both ends of the oil inlet channel (9h) and smaller than the cross-sectional area of ​​the first expansion section (9l). The oil outlet pipe (9e) is... The device has a second expansion section (9n) inside, and a second sealing ball (9o) inside the second expansion section (9n). The second sealing ball (9o) is larger than the cross-sectional area of ​​both ends of the oil outlet pipe (9e) and smaller than the cross-sectional area of ​​the second expansion section (9n). One end of the pressure relief channel (9j) is connected to the hydraulic cylinder (8) through the first pressure relief pipe (9p), and the other end of the pressure relief channel (9j) is connected to the oil storage tank (11) through the second pressure relief pipe (9q). The side of the base (9a) is provided with a screw hole (9r) that connects to the pressure relief channel (9j). A first screw (9s) is screwed into the screw hole (9r). One end of the first screw (9s) is located outside the screw hole (9r) and is provided with a handle (9t). The other end of the first screw (9s) is provided with a third sealing ball (9u).

4. The controlled tipping filter truck according to any one of claims 1 to 3, characterized in that: The clamping assembly (4) includes two horizontal bars (4a) and a fixing clamp (4b). The two horizontal bars (4a) are arranged in parallel on both sides of the material box (1). The top of the L-shaped plate (3) is clamped on the horizontal bars (4a) by the fixing clamp (4b).

5. The easily controllable tipping filter truck according to claim 4, characterized in that: The two horizontal bars (4a) are respectively fitted with clamps (4c), and the two ends of the clamps (4c) are connected together by a second screw (4d) and a nut (4e). A washer (4f) is fitted on the second screw (4d), and an adjusting handle (4g) is hinged to the top of the second screw (4d).

6. The easily controllable tipping filter truck according to claim 4, characterized in that: The end of the horizontal bar (4a) is provided with an auxiliary handle (12).

7. The easily controllable tipping filter truck according to claim 1, characterized in that: The L-shaped plate (3) is provided with a pull handle (3c) at the top.

8. The easily controllable tipping filter truck according to claim 7, characterized in that: The caster wheel (2) is provided with a brake pedal (2a) for braking its rotation.

9. The easily controllable tipping filter truck according to claim 1, characterized in that: The heating mechanism (6) consists of several electric heating tubes arranged in an S-shape. The outer side of the material box (1) is provided with an explosion-proof thermostat (13) for controlling the electric heating tubes. The explosion-proof thermostat (13) is provided with an adjustment knob (14). The explosion-proof thermostat (13) is connected to an explosion-proof plug (16) via a wire (15).

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