Tensioning mechanism for reciprocating type oil and slag scraper

Abstract

The utility model discloses a tensioning mechanism used for a reciprocating oil and slag scraper, the oil and slag scraper comprises a driving wheel, a driven wheel, a traction part supporting the driving wheel and the driven wheel, and a driving mechanism driving the driving wheel to rotate, the tensioning mechanism comprises a tensioning assembly used for providing tensioning force for the driven wheel; the supporting assembly is used for supporting the driven wheel and comprises two supporting frames arranged oppositely and a tensioning pull frame arranged between the two supporting frames and connected with the tensioning assembly, and the two ends of a mandrel of the driven wheel penetrate through the tensioning pull frame and extend into sliding grooves in the two supporting frames. According to the tensioning mechanism for the reciprocating type oil and slag scraping machine, the traction component can be kept in a tensioning state, and normal work of a skimming vehicle is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to a tensioning mechanism for a reciprocating oil and slag scraper. Background Technology

[0002] Currently, the scum produced by horizontal flow aerated grit chambers is generally treated by independent rotary chain plate skimmers or reciprocating flip-plate skimmers integrated with gantry sand suction machines. These types of equipment are relatively mature and widely used, each with its own advantages and disadvantages in production and use.

[0003] Rotary chain-plate skimmers, considering corrosion resistance and weight, generally use a non-metallic chain to drive skimming plates to scrape scum to a scum cylinder at one end, such as the skimming and sludge scraper disclosed in Chinese Patent CN102527105A. This equipment is simple to operate, has good skimming effect, and high efficiency, but its disadvantages are high cost, easy wear, and difficult maintenance. Integrated scraping and suction equipment, such as the skimming device of the bridge-type sand suction machine disclosed in Chinese Patent CN102784497B, has low cost, simple operation, and low maintenance, but its disadvantage is that due to the influence of the sand suction bridge, the stroke cannot reach both ends, resulting in low skimming efficiency.

[0004] To address the aforementioned issues, the applicant developed a reciprocating mobile oil and slag skimmer. It primarily employs a drive structure to move the skimmer back and forth between a first and second position, scraping oil slag to the discharge pipe at the first position. The drive structure includes a driving wheel, a driven wheel, a traction component mounted on the driving and driven wheels, and a drive mechanism that drives the driving wheel to rotate. To ensure the skimmer moves linearly between the first and second positions under the drive of the traction component and to meet the slag scraping requirements, the traction component needs to be kept taut. Utility Model Content

[0005] The purpose of this invention is to provide a tensioning mechanism for a reciprocating oil and slag skimmer, which can keep the traction components in a tensioned state and improve the oil and slag skimming efficiency of the skimmer.

[0006] Based on the above problems, the technical solution provided by this utility model is as follows:

[0007] A tensioning mechanism for a reciprocating oil and sludge scraper, the oil and sludge scraper including a driving wheel, a driven wheel, a traction component sleeved on the driving wheel and the driven wheel, and a drive mechanism for driving the driving wheel to rotate, the tensioning mechanism including:

[0008] A tensioning assembly is used to provide tension force to the driven wheel;

[0009] A support assembly for supporting the driven wheel includes two support frames arranged opposite each other and a tensioning bracket disposed between the two support frames and connected to the tensioning assembly. The two ends of the spindle of the driven wheel extend through the tensioning bracket into the grooves on the two support frames.

[0010] In some embodiments, the tensioning assembly includes a mounting frame mounted above the support frame, a support wheel rotatably mounted on the mounting frame, and a tensioning rope, one end of which is connected to the mounting frame via an elastic element and the other end of which passes around the support wheel and is connected to the tensioning puller.

[0011] In some embodiments, a reversing wheel for pressing the tension rope is rotatably mounted between the two support frames.

[0012] In some embodiments, the tensioning assembly further includes a handwheel rotatably mounted on a mounting bracket and a screw threadedly connected to the handwheel, the lower end of the screw being connected to a bracket that mounts the support wheel.

[0013] In some embodiments, the bracket includes two support plates arranged opposite each other and a connecting plate connecting the two support plates, the support wheel is rotatably mounted on the two support plates, and the screw is fixedly connected to the connecting plate.

[0014] In some embodiments, the mounting bracket includes a base, a left side plate, a right side plate, and a rear side plate vertically fixed to the base, and a top plate connecting the upper ends of the left side plate, the right side plate, the front side plate, and the rear side plate.

[0015] In some embodiments, the front and rear side plates are provided with guide grooves arranged in a vertical direction, and the axle of the support wheel is slidably engaged with the guide grooves.

[0016] In some embodiments, the tensioning mechanism further includes an alarm component comprising a sensor plate disposed on the tensioning rope, and over-limit alarm sensors, slack alarm sensors, and breakage alarm sensors mounted from top to bottom on the mounting frame and arranged opposite to the sensor plate.

[0017] In some embodiments, the inductive contact plate is connected between the tensioning rope and the elastic element.

[0018] In some of these embodiments, the tensioning bracket is U-shaped.

[0019] Compared with the prior art, the advantages of this utility model are:

[0020] 1. The driven wheel is supported by the tensioning assembly, which provides tension to the driven wheel, keeping the traction component in a tensioned state, thereby causing the slag skimmer driven by the traction component to move back and forth to remove oil slag.

[0021] 2. The tensioning assembly includes a screw and a handwheel, which facilitates adjustment of the preload of the tensioning rope;

[0022] 3. An alarm component is installed so that an alarm can be triggered in time when the tension of the tension rope exceeds the limit, becomes slack, or breaks, so that staff can carry out maintenance in a timely manner. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. 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.

[0024] Figure 1 This is a schematic diagram of the tensioning mechanism of the present invention used in a reciprocating oil and slag scraper;

[0025] Figure 2 This is a schematic diagram of the support component in an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the tensioning assembly (with the front side plate removed) in an embodiment of this utility model;

[0027] Figure 4 This is a schematic diagram of the support structure in an embodiment of the present utility model;

[0028] in:

[0029] 1. Tensioning mechanism; 1-1. Support frame; 1-1a. Slide groove; 1-2. Tensioning tie; 1-3. Reversing wheel; 1-4. Mounting frame; 1-4a. Base; 1-4b. Left side plate; 1-4c. Right side plate; 1-4d. Rear side plate; 1-4d1. Guide groove; 1-4e. Top plate; 1-5. Support wheel; 1-6. Tensioning rope; 1-7. Elastic element; 1-8. Screw; 1-9. Handwheel; 1-10. Sensor contact plate; 1-11. Over-limit alarm sensor; 1-12. Slack alarm sensor; 1-13. Breakage alarm sensor; 1-14. Bracket; 1-14a. Support plate; 1-14b. Connecting plate;

[0030] 2. Drive wheel;

[0031] 3. Driven wheel; 3-1. Spindle;

[0032] 4. Traction components;

[0033] 5. Slag dumping truck;

[0034] 6. Gear motor;

[0035] 7. Pool body; 7-1. Guide rail; 7-2. Slag discharge pipe. Detailed Implementation

[0036] The above solution will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrating the present invention and are not intended to limit the scope of the present invention. The implementation conditions used in the embodiments can be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0037] See Figure 1 The diagram below is a structural schematic of an embodiment of the present invention, which provides a tensioning mechanism for a reciprocating oil and slag scraper.

[0038] The oil and sludge skimmer includes a drive wheel 2, a driven wheel 3, a traction component 4 mounted on the drive wheel 2 and the driven wheel 3, a skimming cart 5 connected to the traction component 4, and a drive mechanism that drives the drive wheel 2 to rotate. The traction component 4 is a steel wire rope. The drive mechanism includes a geared motor 6, a drive wheel located at the power output end of the geared motor 6, and a transmission wheel located on the shaft of the drive wheel 2. The transmission wheel and the geared motor 6 are driven by a chain. The geared motor 6 drives the drive wheel 2 to rotate. The drive wheel 2 and the driven wheel 3 work together to move the traction component 4, thereby causing the skimming cart 5 to move back and forth between the first position and the second position of the tank body 7, thus scraping the oil and sludge on the water surface to the sludge discharge pipe 7-2 at the first position for discharge.

[0039] The tensioning mechanism 1 includes a support component for supporting the driven wheel 3 and a tensioning component for providing tensioning force to the driven wheel 3.

[0040] like Figure 2 As shown, the support assembly includes two support frames 1-1 arranged opposite each other and a tensioning bracket 1-2 disposed between the two support frames 1-1 and connected to the tensioning assembly. The spindle 3-1 of the driven wheel 3 extends through the tensioning bracket 1-2 into a groove 1-1a on the two support frames 1-1. Both ends of the spindle 3-1 are configured as sliders that cooperate with the groove 1-1a. The sliders are provided with two sliding surfaces that slide in cooperation with the groove 1-1a. The tensioning assembly can drive the driven wheel 3 to slide on the two support frames 1-1, so that the traction component 4 maintains the required tension force. Preferably, the tensioning bracket 1-2 is U-shaped.

[0041] like Figure 3As shown, the tensioning assembly includes a mounting frame 1-4 mounted above the support frame 1-1, a support wheel 1-5 rotatably mounted on the mounting frame 1-4, and a tensioning rope 1-6. One end of the tensioning rope 1-6 is connected to the mounting frame 1-4 via an elastic element 1-7, and the other end passes around the support wheel 1-5 and is connected to the tensioning puller 1-2. Preferably, the elastic element 1-7 is a spring. Through the cooperation of the elastic element 1-7, the support wheel 1-5, and the tensioning rope 1-6, the driven wheel 3 is pulled, so that the traction component 4 is kept in a tensioned state.

[0042] To further optimize the implementation effect of this utility model, a reversing wheel 1-3 is rotatably installed between the two support frames 1-1 to keep the tensioning rope 1-6 taut.

[0043] Mounting bracket 1-4 includes a base 1-4a, a left side plate 1-4b, a right side plate 1-4c, a front side plate, and a rear side plate 1-4d that are vertically fixed on the base 1-4a, and a top plate 1-4e that connects the upper ends of the left side plate 1-4b, the right side plate 1-4c, the front side plate, and the rear side plate 1-4d. Support wheels 1-5 are mounted on the top plate 1-4e, and the lower end of the elastic element 1-7 is fixedly connected to the base 1-4a.

[0044] To facilitate adjustment of the preload of the tensioning rope 1-6, the tensioning assembly also includes a handwheel 1-9 rotatably mounted on the top plate 1-4e and a screw threadedly connected to the handwheel 1-9. The screw 1-8 passes through the top plate 1-4e and its lower end is connected to the bracket 1-14 that mounts the support wheel 1-5. The handwheel 1-9 is mounted on the top plate 1-4e via a plane bearing and can rotate freely relative to the mounting bracket 1.

[0045] like Figure 4 As shown, the bracket 1-14 includes two support plates 1-14a arranged opposite to each other and a connecting plate 1-14b connecting the two support plates 1-14a. The support wheel 1-5 is rotatably mounted on the two support plates 1-14a, and the lower end of the screw 1-8 is fixedly connected to the connecting plate 1-14b.

[0046] Guide grooves 1-4d1 arranged vertically are provided on the front and rear side plates 1-4d. The two ends of the axle of the support wheel 1-5 are respectively slidably engaged with the two guide grooves 1-4d1. When adjusting the pretension of the tension rope 1-6, the handwheel 1-9 is turned. The handwheel 1-9 drives the screw 1-8 to move up and down along the mounting frame 1-4, thereby driving the support wheel 1-5 to move up and down. The tension of the tension rope 1-6 on the other side is adjusted by the extension and retraction of the elastic element 1-7.

[0047] To facilitate timely alarm responses to the status of the tensioning ropes 1-6, the tensioning mechanism 1 also includes an alarm component. This alarm component includes a sensor plate 1-10 connected to the tensioning ropes 1-6, and over-limit alarm sensors 1-11, slack alarm sensors 1-12, and breakage alarm sensors 1-13, spaced from top to bottom on the mounting frame 1-4. The over-limit alarm sensors 1-11, slack alarm sensors 1-12, and breakage alarm sensors 1-13 are existing technology. The sensor plate 1-10 is connected between the tensioning ropes 1-6 and the elastic element 1-7. When the sensor plate 1-10 moves to the position of each alarm sensor, the alarm sensor is triggered and an alarm is issued.

[0048] The working principle of this utility model is as follows:

[0049] like Figure 1 As shown, the front wheel assembly and rear wheel assembly of the skimming vehicle 5 are rolled on two guide rails 7-1 on opposite sides of the pool body 7, and reciprocate between the first position and the second position under the drive of the traction component 4, so as to scrape the oil sludge on the water surface to the sludge discharge pipe 7-2 of the first position for discharge. During the movement of the skimming vehicle 5, the tensioning rope 1-6 tightens the tensioning bracket 1-2, and the traction component 4 is kept in a tensioned state through the driven wheel 3 so that the skimming vehicle 5 is in the skimming position above the water surface.

[0050] When the traction component 4 experiences excessive tension, the sensing contact plate 1-10 will move along with the stretching of the elastic element 1-7. If the displacement exceeds the set amount, it will trigger the over-limit alarm sensor 1-11, indicating a malfunction in the equipment operation. After a period of use, the traction component 4 will stretch and lengthen. At this time, the sensing contact plate 1-10 will move in the opposite direction along with the contraction of the elastic element 1-7, exceeding the set displacement amount. This will trigger the slack alarm sensor 1-12, indicating that the tension needs to be adjusted or the traction component 4 needs to be replaced. If the traction component 4 breaks, the sensing contact plate 1-10 will suddenly experience a large displacement along with the rapid contraction of the elastic element 1-7, triggering the breakage alarm sensor 1-13 and issuing an alarm.

[0051] In summary, this tensioning mechanism keeps the traction components in a tensioned state, thereby ensuring the working efficiency of the slag skimmer.

[0052] The above examples are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A tensioning mechanism for a reciprocating oil and sludge scraper, said oil and sludge scraper comprising a driving wheel, a driven wheel, a traction member sleeved on said driving wheel and driven wheel, and a driving mechanism for driving said driving wheel to rotate, characterized in that, The tensioning mechanism comprises: a tensioning assembly for providing a tensioning force for the driven wheel; a supporting assembly for supporting the driven wheel, comprising two supporting frames arranged oppositely and a tensioning pull frame arranged between the two supporting frames and connected with the tensioning assembly, and the core shaft of the driven wheel extends through the tensioning pull frame to a sliding slot on the two supporting frames.

2. The take-up mechanism for a reciprocating oil and slag scraper according to claim 1, characterized in that: The tensioning assembly comprises a mounting frame mounted above the supporting frames, a supporting wheel rotatably arranged on the mounting frame, and a tensioning rope, one end of which is connected with the mounting frame through an elastic member and the other end of which is connected with the tensioning pull frame after passing around the supporting wheel.

3. The take-up mechanism for a reciprocating oil and slag scraper according to claim 2, characterized in that: A reversing wheel rotatably arranged between the two supporting frames is arranged to press the tensioning rope.

4. The take-up mechanism for a reciprocating oil and slag scraper according to claim 2, characterized in that: The tensioning assembly further comprises a hand wheel rotatably arranged on the mounting frame and a screw rod threadedly connected with the hand wheel, and the lower end of the screw rod is connected with a bracket mounting the supporting wheel.

5. The take-up mechanism for a reciprocating oil and slag scraper according to claim 4, characterized in that: The bracket comprises two supporting plates arranged oppositely and a connecting plate connecting the two supporting plates, and the supporting wheel is rotatably arranged on the two supporting plates, and the screw rod is fixedly connected with the connecting plate.

6. The take-up mechanism for a reciprocating oil and slag scraper according to claim 4, characterized in that: The mounting frame comprises a base, a left side plate, a right side plate, a front side plate and a rear side plate fixedly arranged vertically on the base, and a top plate connecting the upper ends of the left side plate, the right side plate, the front side plate and the rear side plate.

7. The take-up mechanism for a reciprocating oil and slag scraper according to claim 6, characterized in that: The front side plate and the rear side plate are respectively provided with a guide slot arranged along the vertical direction, and the wheel shaft of the supporting wheel is in sliding fit with the guide slot.

8. The take-up mechanism for a reciprocating oil and slag scraper according to claim 2, characterized in that: The tensioning mechanism further comprises an alarm assembly, which comprises an induction touch plate arranged on the tensioning rope, and an over-limit alarm inductor, a slack alarm inductor and a rupture alarm inductor arranged oppositely from top to bottom on the mounting frame.

9. The take-up mechanism for a reciprocating oil and slag scraper according to claim 8, characterized in that: The induction touch plate is connected between the tensioning rope and the elastic member.

10. The take-up mechanism for a reciprocating oil and slag scraper according to claim 1, characterized in that: The tensioning pull frame is in U shape.

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