Bridge type sand sucker with sand suction pump lifting function

Abstract

The invention relates to the technical field of sewage treatment, in particular to a bridge type sand sucker with a sand suction pump lifting function, the bridge type sand sucker comprises a walking beam and a sand suction pump, two sets of symmetrically arranged fixing plates are fixedly mounted at the bottom end of the walking beam, and a moving plate transversely moving at the bottom of the walking beam is arranged between the two fixing plates; two first electric push rods are fixedly mounted at the bottom ends of the two moving plates correspondingly, a mounting frame is fixedly mounted at the bottom ends of the two first electric push rods jointly, two sliding grooves which are symmetrically formed are formed in the mounting frame, and limiting blocks are slidably arranged in the two sliding grooves correspondingly; the sand suction pump is arranged between the two limiting blocks and is limited through the two limiting blocks. The two electric telescopic rods slide on the annular sliding rail, so that the two clamping plates apply rotating force to the limiting ring to take out the limiting ring from the connecting cylinder, the limiting block slides in the sliding groove in a matched mode, the sand suction pump is conveniently and rapidly replaced and installed, and waste of a large amount of time is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to a bridge - type sand suction machine with a function of lifting and lowering a sand suction pump. Background Art

[0002] The bridge - type sand suction machine is a commonly used sand removal device in sewage treatment, mainly used for cleaning the bottom sand deposits in grit chambers (such as aerated grit chambers, horizontal flow grit chambers).

[0003] Its advantages lie in efficient continuous operation, automatic control (the PLC system can clean at regular intervals and in fixed quantities), corrosion - resistant design, and low maintenance requirements. Compared with traditional sludge scraping equipment, it is more suitable for handling heavy - quality particles, can effectively prevent subsequent equipment wear or blockage, and at the same time reduce secondary pollution caused by manual dredging. It is a key solid - liquid separation device in the water treatment process.

[0004] The sand suction pump of the traditional bridge - type sand suction machine has a fixed height and cannot adjust the position of the suction port according to the thickness of the sand layer at the bottom of the tank, resulting in low sand suction efficiency or residual sand layer. When the sand suction machine is used for a long time, the equipment needs to be repaired regularly, which consumes a large amount of manpower and material resources, wastes a lot of time, and the sand and mud are easy to block the sewage discharge pipe during the sand discharge process, and need to be cleaned frequently, increasing the maintenance cost. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the sand suction pump cannot be quickly replaced and installed, and a bridge - type sand suction machine with a function of lifting and lowering a sand suction pump is proposed.

[0006] In order to achieve the above - mentioned purpose, the present invention adopts the following technical solutions:

[0007] A bridge - type sand suction machine with a function of lifting and lowering a sand suction pump includes a walking beam and a sand suction pump. Two symmetrically arranged fixing plates are fixedly installed at the bottom end of the walking beam, and a moving plate that moves horizontally at the bottom of the walking beam is arranged between the two fixing plates. Two first electric push rods are respectively fixedly installed at the bottom ends of the two moving plates, and an installation frame is fixedly installed at the common bottom end of the two first electric push rods. Two symmetrically arranged sliding grooves are formed on the installation frame, and limiting blocks are slidably arranged in the two sliding grooves. The sand suction pump is arranged between the two limiting blocks and is limited by the two limiting blocks. Four equally - spaced height sensors for monitoring the thickness of the sand layer are fixedly installed at the bottom end of the installation frame.

[0008] Preferably, a second electric push rod is fixedly installed in the sliding groove, the end of the second electric push rod is fixedly connected to the limiting block, guide rods are fixedly installed on both side walls in the sliding groove, guide grooves are formed on both sides of the limiting block, and the two guide rods are respectively slidably arranged in the guide grooves.

[0009] Preferably, a hollow ring-shaped mounting ring is fixedly installed on the mounting frame, a circular sliding rail is fixedly installed on the mounting ring, two symmetrically arranged electric telescopic rods are fixedly installed on the circular sliding rail, and hydraulic rods are fixedly installed on opposite sides of the two electric telescopic rods. Clamping plates are fixedly installed on both of the hydraulic rods.

[0010] Preferably, a telescopic hose is fixedly installed at the bottom end of the walking beam, a sliding ring is fixedly installed at the bottom end of the telescopic hose, a connecting cylinder is provided on the sand suction pump, a hollow bolt communicating with the connecting cylinder is integrally installed on the connecting cylinder, a limiting ring is arranged on the outer wall of the hollow bolt, and a threaded hole is opened in the limiting ring.

[0011] Preferably, the sliding ring is slidably arranged in the limiting ring, a fixing ring for limiting the sliding ring is fixedly installed on the limiting ring, cutting surfaces are arranged on both sides of the limiting ring, and the two clamping plates are respectively arranged on the cutting surfaces arranged on both sides of the limiting ring.

[0012] Preferably, a lead screw is rotatably installed between the two fixing plates, a through hole is opened in the moving plate, a nut is fixedly installed in the through hole, the nut is sleeved on the outer wall of the lead screw, mounting grooves are opened on both of the fixing plates, and a servo motor for driving the lead screw to rotate is fixedly installed in the mounting grooves.

[0013] Preferably, a sliding block is fixedly installed on the moving plate, limiting rods are fixedly installed at both ends of the sliding block, a limiting groove is opened at the bottom end of the walking beam, and the sliding block is slidably arranged in the limiting groove and is limited by the two limiting rods.

[0014] Preferably, a conveying cavity communicating with the telescopic hose and used for conveying sand and gravel is opened in the walking beam, a placement cavity communicating with the conveying cavity is further opened in the walking beam, a spiral blade is rotatably installed in the conveying cavity, and a driving motor for driving the spiral blade to rotate is fixedly installed in the placement cavity.

[0015] Preferably, an extrusion sleeve is fixedly installed in the conveying cavity, a vertical hole communicating with the conveying cavity and located directly below the extrusion sleeve is opened at the bottom end of the walking beam, and a diversion pipe for discharging water in the conveying cavity is fixedly installed in the vertical hole.

[0016] Preferably, a sand discharge pipe communicating with the conveying cavity is fixedly installed on the side wall of the walking beam, two rows of symmetrically arranged protective side rails are fixedly installed on the walking beam, and a fixing frame is fixedly installed on the protective side rails.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. In the present invention, two electric telescopic rods slide on the annular slide rail, so that two clamping plates apply a rotational force to the limiting ring to remove the limiting ring from the connecting cylinder. Cooperating with the sliding of the limiting block in the sliding groove, it is convenient to quickly replace and install the sand suction pump, avoiding wasting a lot of time.

[0019] 2. In the present invention, the spiral blade is used to forcibly discharge sand, avoiding the blockage of the conveying cavity by sand and mud during the sand discharging process, and avoiding the increase in maintenance cost and the improvement of maintenance frequency caused by frequent cleaning of the conveying cavity.

[0020] 3. In the present invention, the height sensor is used to detect the thickness of the sand and mud in real time, and cooperate with the telescopic movement of the first electric telescopic rod, avoiding that the bridge-type sand suction machine cannot adjust the position of the suction port according to the thickness of the sand layer at the bottom of the pool, and avoiding low sand suction efficiency or residual sand layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a bridge-type sand suction machine with a sand suction pump lifting function proposed by the present invention;

[0022] Figure 2 It is a front sectional view of a bridge-type sand suction machine with a sand suction pump lifting function proposed by the present invention;

[0023] Figure 3 It is a schematic diagram of the fixed plate and the moving plate of a bridge-type sand suction machine with a sand suction pump lifting function proposed by the present invention;

[0024] Figure 4 It is a schematic diagram of the first electric push rod and the mounting rack of a bridge-type sand suction machine with a sand suction pump lifting function proposed by the present invention;

[0025] Figure 5 It is a schematic diagram of the mounting ring and the annular slide rail of a bridge-type sand suction machine with a sand suction pump lifting function proposed by the present invention;

[0026] Figure 6 It is a schematic diagram of the limiting ring and the sliding ring of a bridge-type sand suction machine with a sand suction pump lifting function proposed by the present invention;

[0027] Figure 7 It is a schematic diagram of the second electric push rod and the limiting block of a bridge-type sand suction machine with a sand suction pump lifting function proposed by the present invention.

[0028] In the figure: 1, walking beam; 2, fixed plate; 3, servo motor; 4, lead screw; 5, limit groove; 6, sliding block; 7, moving plate; 8, first electric push rod; 9, mounting bracket; 10, sliding groove; 11, guide rod; 12, second electric push rod; 13, limit block; 14, sand suction pump; 15, connecting cylinder; 16, limit ring; 17, threaded hole; 18, sliding ring; 19, telescopic hose; 20, conveying cavity; 21, placement cavity; 22, drive motor; 23, spiral blade; 24, extrusion sleeve; 25, diversion pipe; 26, sand discharge pipe; 27, protective side rail; 28, fixed frame; 29, mounting ring; 30, annular slide rail; 31, electric telescopic rod; 32, hydraulic rod; 33, clamping plate; 34, height sensor. Detailed implementation mode

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0030] Refer to Figures 1-7 , a bridge-type sand suction machine with a sand suction pump lifting function, including a walking beam 1 and a sand suction pump 14. Two symmetrically arranged fixed plates 2 are fixedly installed at the bottom end of the walking beam 1, and a moving plate 7 that moves horizontally at the bottom of the walking beam 1 is arranged between the two fixed plates 2. Two first electric push rods 8 are fixedly installed at the bottom ends of the two moving plates 7 respectively. An installation bracket 9 is fixedly installed at the bottom ends of the two first electric push rods 8. Two symmetrically arranged sliding grooves 10 are opened on the installation bracket 9, and limit blocks 13 are slidably arranged in the two sliding grooves 10. The sand suction pump 14 is arranged between the two limit blocks 13 and the sand suction pump 14 is limited by the two limit blocks 13. Four equally spaced height sensors 34 for monitoring the thickness of the sand layer are fixedly installed at the bottom end of the installation bracket 9.

[0031] A second electric push rod 12 is fixedly installed in the sliding groove 10. The end of the second electric push rod 12 is fixedly connected to the limit block 13. By the expansion and contraction of the second electric push rod 12, the limit block 13 slides in the sliding groove 10, so that the distance between the two limit blocks 13 is reduced, the sand suction pump 14 is pressurized, and the sand suction pump 14 is fixed. Guide rods 11 are fixedly installed on both side walls in the sliding groove 10. Guide grooves are opened on both sides of the limit block 13, and the two guide rods 11 are respectively slidably arranged in the guide grooves.

[0032] A mounting ring 29 in the shape of a hollow ring is fixedly mounted on the mounting bracket 9. A circular slide rail 30 is fixedly mounted on the mounting ring 29. Two symmetrically arranged electric telescopic rods 31 are fixedly mounted on the circular slide rail 30. Hydraulic rods 32 are fixedly mounted on the opposite sides of the two electric telescopic rods 31. Through the synchronous telescoping of the two electric telescopic rods 31, the two tangent planes of the clamping plate 33 and the limiting ring 16 are closely attached. Through the synchronous circular sliding of the two electric telescopic rods 31 on the circular slide rail 30, the limiting ring 16 rotates, and the limiting ring 16 is screwed out from the hollow bolt on the connecting cylinder 15. In cooperation with the telescoping of the electric telescopic rods 31, it is avoided that the limiting ring 16 is screwed out between the two clamping plates 33 during the screwing-out process. Clamping plates 33 are fixedly mounted on both hydraulic rods 32.

[0033] A telescopic hose 19 is fixedly mounted at the bottom end of the walking beam 1. A sliding ring 18 is fixedly mounted at the bottom end of the telescopic hose 19. A connecting cylinder 15 is provided on the sand suction pump 14. A hollow bolt communicating with the connecting cylinder 15 is integrally mounted on the connecting cylinder 15. A limiting ring 16 is arranged on the outer wall of the hollow bolt. A threaded hole 17 is opened in the limiting ring 16.

[0034] The sliding ring 18 is slidably arranged in the limiting ring 16. A fixing ring for limiting the sliding ring 18 is fixedly mounted on the limiting ring 16. Tangent planes are arranged on both sides of the limiting ring 16. Two clamping plates 33 are respectively arranged on the tangent planes arranged on both sides of the limiting ring 16. By the sliding ring 18 being in contact with the hollow nut at the upper end of the connecting cylinder 15, through the rotation of the limiting ring 16, the limiting ring 16 fixes the sliding ring 18 and the hollow nut at the upper end of the connecting cylinder 15, avoiding manual screwing and reducing the replacement time.

[0035] A lead screw 4 is rotatably mounted between two fixing plates 2. By rotating the lead screw 4, the position of the moving plate 7 is adjusted, and the position of the sand suction pump 14 is changed, facilitating sufficient sand suction from the sand and mud pond. A through hole is opened in the moving plate 7. A nut is fixedly mounted in the through hole. The nut is sleeved on the outer wall of the lead screw 4. Mounting grooves are opened on both fixing plates 2. A servo motor 3 for driving the lead screw 4 to rotate is fixedly mounted in the mounting grooves.

[0036] A sliding block 6 is fixedly mounted on the moving plate 7. Limit rods are fixedly mounted at both ends of the sliding block 6. The shape of the limit groove 5 fits the sliding block 6, enabling the limit rods to slide in the limit groove 5. When the lead screw 4 drives the moving plate 7, the moving plate 7 is prevented from rotating by the limit rods. A limit groove 5 is opened at the bottom end of the walking beam 1. The sliding block 6 is slidably arranged in the limit groove 5 and is limited by the two limit rods.

[0037] The walking beam 1 is internally provided with a conveying cavity 20 that communicates with the telescopic hose 19 and conveys sand and gravel. The walking beam 1 is also internally provided with a placement cavity 21 that communicates with the conveying cavity 20. By arranging a spiral blade 23 in the conveying cavity 20, spiral pushing is carried out to prevent sand and mud from depositing and blocking, reducing the frequency of cleaning the conveying cavity 20. The spiral blade 23 is rotatably installed in the conveying cavity 20, and a driving motor 22 for driving the spiral blade 23 to rotate is fixedly installed in the placement cavity 21.

[0038] An extrusion sleeve 24 is fixedly installed in the conveying cavity 20. Through the extrusion of the sand and mud by the extrusion sleeve 24, the water in the sand and mud is extruded out, enabling the water to flow into the diversion pipe 25 and then into the grit chamber, reducing water loss. A vertical hole is provided at the bottom end of the walking beam 1, which is located directly below the extrusion sleeve 24 and communicates with the conveying cavity 20. A diversion pipe 25 for discharging the water in the conveying cavity 20 is fixedly installed in the vertical hole.

[0039] A sand discharge pipe 26 that communicates with the conveying cavity 20 is fixedly installed on the side wall of the walking beam 1. The sand and mud are discharged through the arranged sand discharge pipe 26. Two rows of symmetrically arranged protective side rails 27 are fixedly installed on the walking beam 1, and a fixing frame 28 is fixedly installed on the protective side rail 27.

[0040] The functional principle of the present invention can be elaborated through the following operation modes:

[0041] During use, through the telescoping of the first electric push rod 8, the mounting frame 9 is moved downward. The thickness of the sand layer is monitored in real time by the height sensor 34, and the telescoping of the first electric push rod 8 is controlled to realize the adaptive adjustment of the suction port connected to the bottom of the sand suction pump 14. The sand and mud are conveyed from the telescopic hose 19 into the conveying cavity 20 by the sand suction pump 14. The driving motor 22 controls the rotation of the spiral blade 23, and spiral pushing is carried out to prevent sand and mud from depositing and blocking. The sand and water are separated by the extrusion sleeve 24, and the separated water flows back to the grit chamber through the diversion pipe 25, reducing water loss;

[0042] When the sand suction pump 14 needs to be repaired after long-term use, through the telescoping of the hydraulic rod 32, the clamping plate 33 is made to adhere to the tangent surfaces on both sides of the limiting ring 16. The electric telescopic rod 31 moves circumferentially on the annular slide rail 30, so that the limiting ring 16 is screwed out from the outer wall of the hollow bolt on the connecting cylinder 15, releasing the connection between the sliding ring 18 and the hollow bolt at the upper end of the connecting cylinder 15. When disassembling the sand suction pump 14, the telescopic hose 19 is prevented from affecting the disassembly rate of the sand suction pump 14. In cooperation with the telescoping of the second electric push rod 12, the two limiting blocks 13 release the limitation on the sand suction pump 14, facilitating the installation and disassembly of the sand suction pump 14.

[0043] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A bridge-type sand suction machine with a sand suction pump lifting and lowering function, comprising a walking beam and a sand suction pump, characterized in that: Two groups of symmetrically arranged fixed plates are fixedly installed at the bottom end of the walking beam, and a movable plate that moves laterally at the bottom of the walking beam is arranged between the two fixed plates, two first electric push rods are fixedly installed at the bottom ends of the two movable plates, and a mounting frame is fixedly installed at the bottom ends of the two first electric push rods, two symmetrically arranged sliding grooves are provided on the mounting frame, and limit blocks are slidably arranged in the two sliding grooves, the sand suction pump is arranged between the two limit blocks and the sand suction pump is limited by the two limit blocks, and four equidistantly arranged height sensors for monitoring the thickness of the sand layer are fixedly installed at the bottom end of the mounting frame.

2. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 1, characterized in that: A second electric push rod is fixedly installed in the sliding groove, and the end of the second electric push rod is fixedly connected to the limit block. Guide rods are fixedly installed on both side walls of the sliding groove. Guide grooves are opened on both sides of the limit block, and the two guide rods are respectively slidably set in the guide grooves.

3. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 2, characterized in that: A hollow circular mounting ring is fixedly mounted on the mounting frame, an annular slide rail is fixedly mounted on the mounting ring, two symmetrically arranged electric telescopic rods are fixedly mounted on the annular slide rail, and hydraulic rods are fixedly mounted on opposite sides of the two electric telescopic rods, and clamping plates are fixedly mounted on the two hydraulic rods.

4. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 3, characterized in that: A telescopic hose is fixedly installed at the bottom end of the walking beam, a sliding ring is fixedly installed at the bottom end of the telescopic hose, a connecting tube is arranged on the sand suction pump, a hollow bolt connected to the connecting tube is integrally installed on the connecting tube, a limiting ring is arranged on the outer wall of the hollow bolt, and a threaded hole is opened in the limiting ring.

5. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 4, characterized in that: The sliding ring is slidably arranged in the limiting ring, a fixing ring for limiting the sliding ring is fixedly installed on the limiting ring, cut surfaces are arranged on both sides of the limiting ring, and the two clamping plates are respectively arranged on the cut surfaces arranged on both sides of the limiting ring.

6. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 5, characterized in that: A lead screw is rotatably installed between the two fixed plates, a through hole is opened in the movable plate, a nut is fixedly installed in the through hole, and the nut is sleeved on the outer wall of the lead screw. Both of the fixed plates are opened with installation grooves, and a servo motor that drives the lead screw to rotate is fixedly installed in the installation groove.

7. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 6, characterized in that: A sliding block is fixedly installed on the movable plate, and limiting rods are fixedly installed at both ends of the sliding block. A limiting groove is arranged at the bottom end of the walking beam, and the sliding block is slidably arranged in the limiting groove and is limited by two limiting rods.

8. The bridge-type sand suction machine with the sand suction pump lifting and lowering function according to claim 7, characterized in that: The walking beam is provided with a conveying cavity which is connected with the telescopic hose and conveys sand and gravel. The walking beam is also provided with a placement cavity which is connected with the conveying cavity. A spiral blade is rotatably installed in the conveying cavity. A driving motor which drives the spiral blade to rotate is fixedly installed in the placement cavity.

9. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 8, characterized in that: An extrusion sleeve is fixedly installed in the conveying cavity, a vertical hole is opened at the bottom end of the walking beam and is arranged just below the extrusion sleeve and connected to the conveying cavity, and a guide pipe for discharging water in the conveying cavity is fixedly installed in the vertical hole.

10. A bridge-type sand suction machine with a sand suction pump lifting and lowering function according to claim 9, characterized in that: A sand discharge pipe connected to the conveying cavity is fixedly installed on the side wall of the walking beam, two rows of symmetrically arranged protective side fences are fixedly installed on the walking beam, and a fixing frame is fixedly installed on the protective side fence.

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