Dragging reciprocating type oil and slag scraping machine

Abstract

The invention discloses a traction reciprocating type oil and slag scraping machine, which comprises a transmission mechanism, which comprises a driving wheel, a driven wheel and a traction component connected with the driving wheel and the driven wheel; the driving mechanism is in transmission connection with the driving wheel to drive the driving wheel to rotate; the tensioning mechanism is connected with the driven wheel, so that the traction component is kept in a tensioning state; the skimming vehicle is connected with the traction component and is driven by the traction component to reciprocate between a first position and a second position; the skimming vehicle comprises a truss, a driving sliding rod which is arranged on the truss in a sliding manner and is fixedly connected with the traction component, a scraper assembly which is rotationally arranged on the truss, a connecting rod assembly which is connected with the scraper assembly and the driving sliding rod, a first stop block which is arranged on the truss and is close to a first position, and a second stop block which is arranged on the truss and is close to a second position; and a movement limiting mechanism including a first stopper provided with a first position and a second stopper provided with a second position. The oil and slag scraping machine is convenient to operate and maintain and good in slag scraping effect.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a pulling reciprocating oil and slag scraper. Background Art

[0002] At present, the scum produced by the horizontal flow aerated grit tank is generally treated by an independent rotary chain plate skimmer or a reciprocating flap skimmer integrated with a gantry sand suction machine. This type of equipment is relatively mature and widely used, and each has its own advantages and disadvantages in production and use.

[0003] Considering the corrosion resistance and deadweight factors, the rotary chain plate skimmer generally uses a non-metallic chain to drive the skimmer plate to scrape the scum to the scum cylinder at one end, such as a skimmer scraper disclosed in Chinese patent CN102527105A. This equipment is simple to operate, has good skimming effect and high efficiency, but has the disadvantages of high cost, easy wear and difficult maintenance. The integrated scraping and suction equipment, such as the skimmer device of the bridge-type sand suction machine disclosed in Chinese patent CN102784497B, has low cost, simple operation and low maintenance, but has the disadvantage of not being able to reach both ends due to the influence of the sand suction bridge, and low scraping efficiency. Summary of the invention

[0004] In order to solve the above problems, the present invention aims to provide a pulling reciprocating oil scraper and slag scraper with simple structure, reliable operation and good scraping effect.

[0005] Based on the above problems, the technical solution provided by the present invention is:

[0006] The pulling reciprocating oil and slag scraper includes:

[0007] A transmission mechanism, comprising a driving wheel, a driven wheel and a traction component connecting the driving wheel and the driven wheel;

[0008] A driving mechanism, which is in transmission connection with the driving wheel to drive the driving wheel to rotate;

[0009] A tensioning mechanism connected to the driven wheel to keep the traction component in a tensioned state;

[0010] A slag skimmer, which is connected to the traction component and reciprocates between a first position and a second position under the drive of the traction component, the slag skimmer comprising a truss, a driving slide bar slidably arranged on the truss and fixedly connected to the traction component, a scraper assembly rotatably arranged on the truss, a connecting rod assembly connecting the scraper assembly and the driving slide bar, a first stopper arranged on the truss near the first position, and a second stopper arranged on the truss near the second position;

[0011] a movement limiting mechanism including a first limiter for setting the first position and a second limiter for setting the second position;

[0012] When the slag skimmer moves to the first position, the first limiter positions the slag skimmer, the driving slide bar moves from the first stopper to the second stopper until it abuts against the second stopper, the scraper assembly is lifted, and then the slag skimmer moves from the first position to the second position;

[0013] When the slag skimmer moves to the second position, the second limiter positions the slag skimmer, the driving slide bar moves from the second stop block toward the first stop block until it abuts against the first stop block, the scraper assembly falls, and then the slag skimmer moves from the second position to the first position.

[0014] In some embodiments, the scraper assembly includes a first scraper plate rotatably disposed at one end of the truss near the first position and a second scraper plate rotatably disposed at one end of the truss near the second position;

[0015] The driving slide bar is provided with a limiting portion extending downward to abut against the first stopper and the second stopper;

[0016] The connecting rod assembly includes a first connecting rod connecting the first scraping plate and the limiting portion and a second connecting rod connecting the second scraping plate and the limiting portion.

[0017] In some of the embodiments, the first limiter includes a bracket, a brake lever rotatably arranged on the bracket, a counterweight arranged on one end of the brake lever close to the slag skimmer, and a limiting frame that keeps the brake lever in a horizontal state, the lower end of the brake lever is provided with a limit groove that cooperates with the roller of the slag skimmer, and the structure of the second limiter is the same as that of the first limiter.

[0018] In some of the embodiments, the truss is provided with limiting wheel assemblies on both sides of the driving slide rod, and a wear-resistant plate is provided between the driving slide rod and the truss.

[0019] In some embodiments, the driving mechanism includes a reduction motor, a driving wheel arranged at the power output end of the reduction motor, a transmission shaft supporting the driving wheel, and a transmission wheel arranged on the transmission shaft, and the transmission wheel is connected to the driving wheel in a transmission manner.

[0020] In some of the embodiments, the transmission mechanism further includes a pressing wheel pressed against the traction component.

[0021] In some embodiments, the tensioning mechanism includes a support assembly for supporting the driven wheel and a tensioning assembly for providing tensioning force to the driven wheel;

[0022] The support assembly comprises two support frames arranged opposite to each other and a tensioning pull frame arranged between the two support frames and connected to the tensioning assembly. Both ends of the core shaft of the driven wheel pass through the tensioning pull frame and extend into the slide groove on the support frame.

[0023] In some embodiments, the tensioning assembly includes a mounting frame, a support wheel rotatably disposed on the mounting frame, and a tensioning rope, one end of the tensioning rope is connected to the mounting frame via an elastic member and the other end is connected to the tensioning pull frame after passing around the support wheel, and a reversing wheel rotatably disposed on the support frame for compressing the tensioning rope.

[0024] In some of the embodiments, the tensioning assembly further includes a hand wheel rotatably mounted on the mounting frame and a screw threadedly connected to the hand wheel, and the lower end of the screw is fixedly connected to a support member on which the support wheel is mounted.

[0025] In some of the embodiments, the tensioning mechanism further includes an alarm component, which includes a sensing touch panel disposed on the tensioning rope, and an over-limit alarm sensor, a slack alarm sensor, and a break alarm sensor spaced from top to bottom on the mounting frame.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] 1. The driving slide bar of the slag skimmer can slide along the truss driven by the traction component to drive the first scraper plate and the second scraper plate to lift or drop, meeting the requirements of scraping slag and oil when moving forward and avoiding oil residue from retreating when moving backward. The oil scraper and slag scraper has a simple structure and is easy to operate;

[0028] 2. A movement limiting mechanism is set at the first position and the second position of the slag skimmer, which can temporarily limit the rollers of the slag skimmer. The slag skimmer is pulled to move only when the first scraper plate and the second scraper plate are lifted or dropped to the right position, thereby improving the scraping efficiency.

[0029] 3. Set limit wheel assemblies on both sides of the driving slide bar on the truss to keep the driving slide bar and the traction component moving in the same direction;

[0030] 4. The tensioning mechanism is equipped with an alarm component, which can give an alarm in time according to the situation of the tensioning rope to remind the staff to carry out maintenance in time to ensure work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0032] Figure 1 This is a schematic diagram of the structure of an embodiment of a pulling reciprocating oil and slag scraper of the present invention;

[0033] Figure 2 This is a second structural diagram of an embodiment of the present invention;

[0034] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0035] Figure 4 A schematic diagram of the structure of the driving structure in an embodiment of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the cooperation between the clamping wheel and the traction component in an embodiment of the present invention;

[0037] Figure 6 It is a structural schematic diagram of a support assembly in an embodiment of the present invention;

[0038] Figure 7 It is a structural schematic diagram of a tensioning assembly in an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the structure of a slag skimmer in an embodiment of the present invention;

[0040] Fig. 9 is a schematic structural diagram of a first limiter in an embodiment of the present invention;

[0041] in:

[0042] 1. Transmission mechanism; 1-1. Driving wheel; 1-2. Driven wheel; 1-2a. Mandrel; 1-3. Traction component; 1-4. Pressure wheel;

[0043] 2. Driving mechanism; 2-1. Speed ​​reduction motor; 2-2. Transmission shaft; 2-3. Transmission wheel;

[0044] 3. Tensioning mechanism; 3-1. Support frame; 3-1a. Slide; 3-2. Tensioning rack; 3-3. Reversing wheel; 3-4. Mounting frame; 3-4a. Guide groove; 3-5. Support wheel; 3-6. Tensioning rope; 3-7. Elastic member; 3-8. Screw rod; 3-9. Hand wheel; 3-10. Induction touch panel; 3-11. Over-limit alarm sensor; 3-12. Relaxation alarm sensor; 3-13. Breakage alarm sensor;

[0045] 4. Slag skimmer; 4-1. Truss; 4-1a. Roller; 4-2. Driving slide bar; 4-2a. Limiting part; 4-3. First stopper; 4-4. Second stopper; 4-5. Limiting wheel assembly; 4-6. First scraper plate; 4-7. Second scraper plate; 4-8. First connecting rod; 4-9. Second connecting rod; 4-10. First support; 4-11. Second support; 4-12. Wear-resistant plate;

[0046] 5. Pool body; 5-1. Guide rail;

[0047] 6. Slag discharge pipe;

[0048] 7. First limiter; 7-1. Brake; 7-2. Brake lever; 7-3. Counterweight; 7-4. Limiting frame. DETAILED DESCRIPTION

[0049] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention and are not limited to the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0050] like Figure 1 and Figure 2 , which is a schematic structural diagram of an embodiment of the present invention, provides a pulling reciprocating oil and slag scraper, including a transmission mechanism 1, a driving mechanism 2, a tensioning mechanism 3, a slag skimmer 4 and a movement limiting mechanism 7.

[0051] The transmission mechanism 1 comprises a driving wheel 1-1, a driven wheel 1-2 and a traction component 1-3 connecting the driving wheel 1-1 and the driven wheel 1-2, wherein the traction component 1-3 is a steel wire rope, rope grooves are arranged in the circumference of the driving wheel 1-1 and the driven wheel 1-2, and patterns are pressed into the rope grooves by a knurling tool, which can increase the friction between the rope groove wall and the steel wire rope, and effectively protect the steel wire rope strands, thereby reducing the breakage of the rope strands due to wear.

[0052] In order to increase the friction between the traction component 1-3 and the driving wheel 1-1, as Figure 5 As shown, the transmission mechanism 1 also includes a clamping wheel 1-4 clamped on the traction component 1-3 to increase the wrap angle between the traction wire rope and the driving wheel 1-1, and the clamping wheel 1-4 is installed on the inner wall of the tank body 5 through a support seat.

[0053] like Figure 4As shown, the driving mechanism 2 is connected to the driving wheel 1-1 to drive the driving wheel 1-1 to rotate, including a reduction motor 2-1 installed on the pool body 5, a driving wheel arranged at the power output end of the reduction motor 2-1, a transmission shaft 2-2 supporting the driving wheel 1-1, and a transmission wheel 2-3 arranged on the transmission shaft 2-2. Two mounting seats are fixed on the pool body 5, the transmission shaft 2-2 is supported on the two mounting seats via bearings, the transmission wheel 2-3 is fixedly connected to the transmission shaft 2-2, and the transmission wheel 2-3 and the driving wheel are driven by a chain. The reduction motor 2-1 and the chain drive the transmission wheel 2-3 to rotate, so as to drive the transmission shaft 2-2 to rotate, thereby driving the driving wheel 1-1 to rotate.

[0054] The slag skimmer 4 is connected to the traction component 1-3, and moves back and forth between a first position and a second position driven by the traction component 1-3, wherein the first position is the position where a slag discharge pipe 6 is set in the pool body 5, and the slag skimmer 4 moves back and forth between the first position and the second position to scrape the oil residue to the slag discharge pipe 6 for discharge.

[0055] like Figure 8 As shown, the slag skimmer 4 includes a truss 4-1, a driving slide bar 4-2 slidably arranged on the truss 4-1 and fixedly connected to the traction component 1-3, a scraper assembly rotatably arranged on the truss 4-1, a connecting rod assembly connecting the scraper assembly and the driving slide bar 4-2, a first stopper 4-3 arranged on the truss 4-1 near the first position, and a second stopper 4-4 arranged on the truss 4-1 near the second position, a limiting portion 4-2a extending downward to abut against the first stopper 4-3 and the second stopper 4-4 is provided on the driving slide bar 4-2, two rollers 4-1a are respectively provided on both sides of the truss 4-1, and two sets of guide rails 5-1 arranged opposite to each other are provided on the inner wall of the pool body 5, and the truss 4-1 is rollingly connected to the guide rails 5-1 via the rollers 4-1a.

[0056] The scraper assembly includes a first scraper plate 4-6 rotatably arranged at one end of the truss 4-1 near the first position and a second scraper plate 4-7 rotatably arranged at one end of the truss 4-1 near the second position, the first scraper plate 4-6 is rotatably connected to the truss 4-1 via a first support 4-10, and the second scraper plate 4-7 is rotatably connected to the truss 4-1 via a second support 4-11, wherein the first support 4-10 is a rod-shaped structure, and the second support 4-11 is a fan-shaped plate structure. The connecting rod assembly includes a first connecting rod 4-8 connecting the first scraper plate 4-6 and the limiting portion 4-2a and a second connecting rod 4-9 connecting the second scraper plate 4-7 and the limiting portion 4-2a, one end of the first connecting rod 4-8 is hinged to the limiting portion 4-2a and the other end is hinged to the first support 4-11, and one end of the second connecting rod 4-9 is hinged to the limiting portion 4-2a and the other end is hinged to the second support 4-11.

[0057] When the limit part 4-2a contacts the first stopper 4-3, the first scraper plate 4-6 and the second scraper plate 4-7 fall down, and when the limit part 4-2a contacts the second stopper 4-4, the first scraper plate 4-6 and the second scraper plate 4-7 rise. Two scraper plates are provided, and the second scraper plate 4-7 located at the rear of the skimmer 4 can stay near the rear pool wall to scrape away the scum at the rear end, thereby achieving comprehensive scraping of the scum.

[0058] In order to make the moving direction of the driving slide bar 4-2 consistent with the traction component 1-3, a limiting wheel assembly 4-5 is provided on both sides of the driving slide bar 4-2 on the truss 4-1. The limiting wheel assembly 4-5 includes four limiting wheels evenly distributed on both sides of the driving slide bar 4-2.

[0059] Since there is relative sliding between the driving slide rod 4-2 and the truss 4-1, in order to reduce the wear of the driving slide rod 4-2 on the truss 4-1, a wear-resistant plate 4-12 is provided between the driving slide rod 4-2 and the truss 4-1. The wear-resistant plate 4-12 can adopt the wear-resistant steel plate in the prior art.

[0060] The movement limiting mechanism includes a first limiter 7 set at a first position and a second limiter set at a second position. When the slag skimmer 4 moves to the first position, the first limiter 7 positions the slag skimmer 4, and the slag skimmer 4 enters a backward stroke, driving the slide bar 4-2 to move from the first stop block 4-3 to the second stop block 4-4 until it abuts against the second stop block 4-4, the scraper assembly is lifted, and then the slag skimmer 4 moves from the first position to the second position; when the slag skimmer 4 moves to the second position, the second limiter positions the slag skimmer 4, and the slag skimmer 4 enters a forward stroke, driving the slide bar 4-2 to move from the second stop block 4-4 to the first stop block 4-3 until it abuts against the first stop block 4-3, the scraper assembly falls, and then the slag skimmer 4 moves from the second position to the first position.

[0061] like Fig. 9 As shown, the first limiter 7 includes a bracket 7-1, a brake lever 7-2 rotatably arranged on the bracket 7-1, a counterweight 7-3 arranged at one end of the brake lever 7-2 close to the slag skimmer 4, and a limiting frame 7-4 that keeps the brake lever 7-2 in a horizontal state. A limiting groove that cooperates with the roller of the slag skimmer 4 is provided at the lower end of the brake lever 7-2. In order to facilitate the roller of the slag skimmer 4 to roll to the limiting groove, an inclined guide surface is provided at one end of the brake lever 7-2 close to the slag skimmer 4, and the inclined guide surface is arranged inclined downward from close to the slag skimmer 4 to away from the slag skimmer 4.

[0062] The limiting frame 7-4 is a gate-shaped frame, and the brake lever 7-2 extends into the frame. The brake lever 7-2 is kept in a horizontal state by the cooperation of the counterweight 7-3 and the limiting frame 7-4. Among them, the bracket 7-1 and the limiting frame 7-4 are both fixed on the guide rail 5-1. The structure of the second limiter is the same as that of the first limiter 7, and the present invention will not repeat it.

[0063] The tensioning mechanism is connected to the driven wheel 1-2 to keep the traction component 1-3 in a tensioned state, and includes a supporting component for supporting the driven wheel 1-2 and a tensioning component for providing tensioning force for the driven wheel 1-2.

[0064] like Figure 3 and Figure 6 As shown, the support assembly includes two support frames 3-1 arranged opposite to each other and a tensioning rack 3-2 arranged between the two support frames 3-1 and connected to the tensioning assembly. Both ends of the core shaft 1-2a of the driven wheel 1-2 pass through the tensioning rack 3-2 and extend into the slide grooves 3-1a on the two support frames 3-1. In this way, the tensioning rack 3-2 is pulled by the tensioning assembly to tighten the driven wheel 1-2, thereby keeping the traction component 1-3 in a tensioned state.

[0065] like Figure 7 As shown, the tensioning assembly includes a mounting frame 3-4 fixed to the upper end of the pool body 5, a support wheel 3-5 rotatably set on the mounting frame 3-4 and a tensioning rope 3-6, one end of the tensioning rope 3-6 is connected to the mounting frame 3-4 via an elastic member 3-7 and the other end bypasses the support wheel 3-5 and is connected to the tensioning pull frame 3-2, and at the same time, a reversing wheel 3-3 is rotatably set on the support frame 3-1 to compress the tensioning rope 3-6, wherein the elastic member 3-7 is a spring.

[0066] In order to facilitate the adjustment of the pre-tightening force of the tensioning rope 3-6 on the driven wheel 1-2, the tensioning assembly also includes a handwheel 3-9 rotatably mounted on the mounting frame 3-4 and a screw rod 3-8 threadedly connected to the handwheel 3-9, the lower end of the screw rod 3-8 is fixedly connected to the support member for mounting the support wheel 3-5, the handwheel 3-9 is mounted on the mounting frame 3-4 via a plane bearing, and guide grooves 3-4a are provided on the side panels on both sides of the mounting frame 3-4, and the two ends of the wheel axle of the support wheel 3-5 are slidably matched with the two guide grooves 3-4a to ensure that the support wheel 3-5 can move up and down in a straight line. By rotating the handwheel 3-9, the screw rod 3-8 is driven to move up and down, thereby driving the support wheel 3-5 to move up and down, and the tension of the tensioning rope 3-6 on the other side is adjusted by the extension and retraction of the elastic member 3-7.

[0067] In order to respond to the state of the tension rope 3-6 in time, the tension mechanism 3 also includes an alarm component, which includes a sensing touch panel 3-10 connected to the tension rope 3-6, and an over-limit alarm sensor 3-11, a slack alarm sensor 3-12, and a break alarm sensor 3-13 arranged on the mounting frame 3-4 from top to bottom. Among them, the over-limit alarm sensor 1-11, the slack alarm sensor 1-12, and the break alarm sensor 3-13 are existing technologies, and the sensing touch panel 3-10 is connected between the tension rope 3-6 and the elastic member 3-7. When the sensing touch panel 3-10 moves to each alarm sensor position, the alarm sensor is triggered and an alarm is sounded.

[0068] When a large pulling force occurs during the operation of the traction component 1-3, the sensing touch plate 3-10 will move with the stretching of the elastic member 3-7. When the displacement exceeds the set amount, the over-limit alarm sensor 3-11 will be triggered to sound an alarm, indicating that the equipment is malfunctioning; when the traction component 1-3 is stretched and lengthened after being used for a period of time, the sensing touch plate 3-10 will be displaced in the opposite direction with the contraction of the elastic member 3-7. When the displacement exceeds the set amount, the slack alarm sensor 3-12 will be triggered to sound an alarm, indicating that the tension needs to be adjusted or the traction component 1-3 needs to be replaced; if the traction component 1-3 is broken, the sensing touch plate 3-10 will suddenly have a large displacement with the rapid contraction of the elastic member 3-7, and will touch the break alarm sensor 3-13 to sound an alarm.

[0069] The working principle of the present invention is:

[0070] The reduction motor 2-1 drives the driving wheel 1-1 to rotate, and the driving wheel 1-1 drives the traction component 1-3 mounted thereon to reciprocate. When the slag skimmer 4 is in the forward stroke, the traction component 1-3 moves from the second position to the first position. Due to the limitation of the rear wheel of the slag skimmer 4 by the second limiter, the driving slide bar 4-2 first pushes the scraper plate assembly from the raised position to the dropped position through the connecting rod assembly. After the scraper plate assembly is in place, the limiting portion 4-2a of the driving slide bar 4-2 abuts against the first stop block 4-3. Thereafter, the traction component 1-3 drives the slag skimmer 4 to move forward in the direction of the first position until it runs to the set position close to the slag discharge pipe 6. The reduction motor 2-1 is stopped through the position switch. At the same time, the front wheel of the slag skimmer 4 is limited by the first limiter 7. Thereafter, the slag skimmer 4 enters the backward stroke.

[0071] After the slag skimmer 4 enters the backward stroke, the reduction motor 2-1 reverses, and the driving wheel 1-1 and the traction component 1-3 run in the opposite direction. Due to the limitation of the front wheel of the slag skimmer 4 by the first limiter 7, the traction component 1-3 first pulls the driving slide bar 4-2 to move toward the second position, and the driving slide bar 4-2 pulls the scraper plate assembly to rotate from the falling position to the lifting position. After the scraper plate assembly is lifted into place, the driving slide bar 4-2 abuts against the second stop block 4-4, and then the slag skimmer 4 is driven to move backward toward the second position until it moves to the second position, and the reduction motor 2-1 is stopped through the position switch. At the same time, the rear wheel of the slag skimmer 4 is limited by the second limiter. After that, the slag skimmer 4 enters the forward stroke again, and the cycle is repeated until the slag and oil are scraped to the slag discharge pipe 6 for discharge.

[0072] In summary, the oil scraper and slag scraper utilizes a traction component to pull the slag skimmer to reciprocate, and simultaneously completes the actions of dropping and lifting the plate to achieve the purpose of skimming. It has a simple structure, is easy to operate, and has a good skimming effect.

[0073] The above examples are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. Pulling reciprocating oil and slag scraper, characterized in that: include: A transmission mechanism, comprising a driving wheel, a driven wheel and a traction component connecting the driving wheel and the driven wheel; A driving mechanism, which is in transmission connection with the driving wheel to drive the driving wheel to rotate; A tensioning mechanism connected to the driven wheel to keep the traction component in a tensioned state; A slag skimmer, which is connected to the traction component and reciprocates between a first position and a second position under the drive of the traction component, the slag skimmer comprising a truss, a driving slide bar slidably arranged on the truss and fixedly connected to the traction component, a scraper assembly rotatably arranged on the truss, a connecting rod assembly connecting the scraper assembly and the driving slide bar, a first stopper arranged on the truss near the first position, and a second stopper arranged on the truss near the second position; a movement limiting mechanism including a first limiter for setting the first position and a second limiter for setting the second position; When the slag skimmer moves to the first position, the first limiter positions the slag skimmer, and the slag skimmer enters a backward stroke, the driving slide bar moves from the first stop block to the second stop block until it abuts against the second stop block, the scraper assembly is lifted, and then the slag skimmer moves from the first position to the second position; When the slag skimmer moves to the second position, the second limiter positions the slag skimmer, and the slag skimmer enters a forward stroke. The driving slide bar moves from the second stop block toward the first stop block until it abuts against the first stop block, the scraper assembly falls, and then the slag skimmer moves from the second position to the first position.

2. The pulling reciprocating oil and slag scraper according to claim 1, characterized in that: The scraper assembly includes a first scraper plate rotatably disposed at one end of the truss close to the first position and a second scraper plate rotatably disposed at one end of the truss close to the second position; The driving slide bar is provided with a limiting portion extending downward to abut against the first stopper and the second stopper; The connecting rod assembly includes a first connecting rod connecting the first scraping plate and the limiting portion and a second connecting rod connecting the second scraping plate and the limiting portion.

3. The pulling reciprocating oil and slag scraper according to claim 1, characterized in that: The first limiter includes a bracket, a brake lever rotatably arranged on the bracket, a counterweight arranged on one end of the brake lever close to the slag skimmer, and a limiting frame that keeps the brake lever in a horizontal state. The lower end of the brake lever is provided with a limiting groove that cooperates with the roller of the slag skimmer. The structure of the second limiter is the same as that of the first limiter.

4. The pulling reciprocating oil and slag scraper according to claim 1, characterized in that: The truss is provided with limiting wheel assemblies on both sides of the driving slide rod, and a wear-resistant plate is provided between the driving slide rod and the truss.

5. The pulling reciprocating oil and slag scraper according to claim 1, characterized in that: The driving mechanism includes a reduction motor, a driving wheel arranged at the power output end of the reduction motor, a transmission shaft supporting the driving wheel, and a transmission wheel arranged on the transmission shaft, wherein the transmission wheel is in transmission connection with the driving wheel.

6. The pulling reciprocating oil and slag scraper according to claim 1, characterized in that: The transmission mechanism also includes a pressing wheel pressed against the traction component.

7. The pulling reciprocating oil and slag scraper according to claim 1, characterized in that: The tensioning mechanism comprises a supporting assembly for supporting the driven wheel and a tensioning assembly for providing tensioning force for the driven wheel; The support assembly comprises two support frames arranged opposite to each other and a tensioning pull frame arranged between the two support frames and connected to the tensioning assembly. Both ends of the core shaft of the driven wheel pass through the tensioning pull frame and extend into the slide groove on the support frame.

8. The pulling reciprocating oil and slag scraper according to claim 7, characterized in that: The tensioning assembly includes a mounting frame, a support wheel rotatably arranged on the mounting frame, and a tensioning rope. One end of the tensioning rope is connected to the mounting frame via an elastic member and the other end is connected to the tensioning puller after passing around the support wheel. A reversing wheel is rotatably arranged on the support frame to compress the tensioning rope.

9. The pulling reciprocating oil and slag scraper according to claim 8, characterized in that: The tensioning assembly also includes a hand wheel rotatably mounted on the mounting frame and a screw rod threadedly connected to the hand wheel, and the lower end of the screw rod is connected to a support member for mounting the support wheel.

10. The pulling reciprocating oil and slag scraper according to claim 8, characterized in that: The tensioning mechanism also includes an alarm component, which includes a sensing touch plate arranged on the tensioning rope, and an over-limit alarm sensor, a slack alarm sensor and a break alarm sensor arranged on the mounting frame from top to bottom.

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