Sludge dewatering device of stacked screw machine

Abstract

The utility model discloses a sludge dewatering device of a stacked screw machine, which comprises a water receiving tank, a dewatering tank is fixedly mounted at the top end of the water receiving tank, the dewatering tank is inclined, the bottom of the dewatering tank is hollow, a shaft lever is rotatably connected inside the dewatering tank through a bearing, spiral blades with different gaps are fixed on the surface of the shaft lever, and the spiral blades are fixed on the surface of the shaft lever. Lamination sheets are installed inside the dewatering tank and located outside the spiral blades, and a sludge discharging opening is formed in the position, close to the spiral blades, of the side wall of the top end of the dewatering tank. According to the sludge dewatering device, the water receiving tank, the dewatering tank, the shaft rod, the spiral blade, the lamination, the L-shaped plate, the motor and the sludge blocking assembly are arranged, the motor drives the shaft rod and the spiral blade to rotate in the lamination, water in sludge is squeezed out through the spiral blade, and when the sludge is squeezed out of the sludge discharging opening of the dewatering tank, the sludge blocking assembly plays a role in squeezing; according to the device, the extrusion force of the mud guard can be quickly adjusted according to the drying degree of the extruded sludge, so that the machine adjusting efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sludge dewatering technology, and in particular to a sludge dewatering device for a screw press. Background Technology

[0002] The working principle of a screw press sludge dewatering machine can be divided into three main parts: concentration, dewatering, and self-cleaning. In the concentration stage, as the screw drive shaft rotates, multiple solid and movable plates move relative to each other, filtering water from the sludge through the gaps between the plates, achieving rapid concentration. In the dewatering stage, the concentrated sludge moves forward continuously with the rotation of the screw shaft. Along the direction of the filter cake outlet, the screw pitch gradually decreases, the gap between the rings also gradually decreases, and the volume of the screw cavity continuously shrinks. Under the action of the baffle plate at the outlet, the internal pressure gradually increases. Driven by the continuous rotation of the screw drive shaft, the water in the sludge is squeezed out, the solid content of the filter cake continuously increases, and ultimately, continuous dewatering of the sludge is achieved.

[0003] In practical application, the squeezing force of the mudguards on the sludge needs to be adjusted according to the different properties of the sludge. Currently, adjusting the position of the mudguards requires first disassembling them, then adjusting their position, and finally re-fixing them, resulting in a long downtime and low adjustment efficiency. Secondly, near the thickening section of the screw press sludge dewatering machine, the water squeezed out still contains a small amount of sludge, and the current screw press sludge dewatering machine cannot further filter out this sludge, thus requiring further improvement. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a sludge dewatering device for a screw press.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a sludge dewatering device for a screw press, comprising a water receiving tank, a dewatering tank fixedly installed at the top of the water receiving tank, the dewatering tank being inclined, the bottom of the dewatering tank being hollowed out, a shaft rotatably connected to the inside of the dewatering tank via bearings, spiral blades with different gaps fixed on the surface of the shaft, stacked plates installed inside the dewatering tank and outside the spiral blades, a sludge discharge port opened on the top side wall of the dewatering tank near the spiral blades, an L-shaped plate fixed on the outer side wall of the dewatering tank near the sludge discharge port, a motor fixed on the side of the L-shaped plate away from the water receiving tank, a shaft fixedly connected to the output end of the motor at one end outside the dewatering tank, a mud-blocking assembly installed on the side of the L-shaped plate near the sludge discharge port, a side opening opened on the side wall of the water receiving tank, a filter assembly installed inside the water receiving tank near the side opening, and a support plate fixed on the inner side wall of the water receiving tank below the filter assembly.

[0006] Furthermore, the mud-blocking assembly includes a sliding sleeve that is slidably fitted onto the surface of the shaft, and a mud-blocking plate and a second end plate are respectively fixed at both ends of the sliding sleeve, with the mud-blocking plate located on the side near the mud discharge port.

[0007] Furthermore, the mudguard assembly also includes an externally threaded tube fixed to the surface of the L-shaped plate, and the externally threaded tube is located outside the shaft. An internally threaded sleeve is rotatably connected to the surface of the externally threaded tube by a thread. A first end plate is fixed to the side of the internally threaded sleeve near the mudguard plate. A spring is fixedly connected to the side of the first end plate near the second end plate. The other end of the spring is in contact with the second end plate.

[0008] Furthermore, the filter assembly includes a filter plate located on the surface of the support plate. The filter plate passes through the side opening and is fixedly connected to a side plate on the side near the side opening. A perforation is provided on the top of the side plate. A screw is fixed on the outer wall of the water receiving tank above the side opening. An internal thread cap is rotatably connected to the surface of one end of the screw that passes through the perforation.

[0009] Furthermore, a handle is fixedly connected to the side of the side plate away from the filter plate.

[0010] Furthermore, a drain outlet is provided at the bottom of the side wall of the water receiving tank.

[0011] The beneficial effects of this utility model are:

[0012] 1. In use, this utility model is a sludge dewatering device for a screw press, which includes a water receiving tank, a dewatering tank, a shaft, a spiral blade, stacked plates, an L-shaped plate, a motor, and a mud-blocking assembly. The motor drives the shaft and spiral blade to rotate within the stacked plates. The spiral blade squeezes out the water from the sludge. When the sludge is squeezed out from the sludge discharge port of the dewatering tank, the mud-blocking assembly exerts a squeezing effect. This device can quickly adjust the squeezing pressure of the mud-blocking plate according to the dryness of the squeezed sludge, thereby improving the machine adjustment efficiency.

[0013] 2. When in use, the sludge dewatering device of the screw press is equipped with a water receiving tank and a filter assembly. The filter assembly filters the water falling into the water receiving tank, thereby further filtering out a small amount of sludge in the water, so that the sludge in the water can be completely removed. Secondly, the entire filter assembly is simple and convenient to disassemble and assemble, making it easy to clean the filtered sludge. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, 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.

[0015] Figure 1: Overall schematic diagram of this utility model;

[0016] Figure 2 Partial perspective view of this utility model;

[0017] Figure 3 The present utility model Figure 1 Enlarged view of point A in the middle.

[0018] The attached figures are labeled as follows:

[0019] 1. Water receiving tank; 101. Side opening; 2. Dewatering tank; 21. Sludge discharge port; 3. Shaft; 4. Spiral blade; 5. Stacked blades; 6. L-shaped plate; 7. Motor; 81. Sliding sleeve; 82. Mud baffle; 83. Second end plate; 84. External threaded pipe; 85. Internal threaded sleeve; 86. First end plate; 87. Spring; 9. Drain outlet; 10. Support plate; 11. Filter assembly; 111. Filter plate; 112. Side plate; 113. Perforation; 114. Internal threaded cap; 115. Handle; 12. Screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-3 As shown, a sludge dewatering device for a screw press is disclosed, comprising a water receiving tank 1, a dewatering tank 2 fixedly installed at the top of the water receiving tank 1, the dewatering tank 2 being inclined and having a hollow bottom, a shaft 3 rotatably connected inside the dewatering tank 2 via bearings, spiral blades 4 with different gaps fixed on the surface of the shaft 3, stacked plates 5 installed inside the dewatering tank 2 and outside the spiral blades 4, a sludge discharge port 21 opened on the top side wall of the dewatering tank 2 near the spiral blades 4, an L-shaped plate 6 fixed on the outer side wall of the dewatering tank 2 near the sludge discharge port 21, a motor 7 fixed on the side of the L-shaped plate 6 away from the water receiving tank 1, the end of the shaft 3 outside the dewatering tank 2 being fixedly connected to the output end of the motor 7, a mud-blocking component installed on the side of the L-shaped plate 6 near the sludge discharge port 21, a side opening 101 opened on the side wall of the water receiving tank 1, a filter component 11 installed inside the water receiving tank 1 near the side opening 101, and a support plate 10 fixed on the inner side wall of the water receiving tank 1 below the filter component 11.

[0022] In this embodiment, the side of the dewatering tank 2 away from the sludge discharge port 21 is the sludge feed port. The structure of the dewatering tank 2, the shaft 3, the spiral blade 4, and the stacked blades 5 is exactly the same as that of the existing screw press.

[0023] The mudguard assembly includes a sliding sleeve 81 that is slidably sleeved on the surface of the shaft 3, and a mudguard plate 82 and a second end plate 83 are fixed at both ends of the sliding sleeve 81, with the mudguard plate 82 located on the side near the mud discharge port 21.

[0024] When the spiral blade 4 squeezes the sludge out of the sludge discharge port 21, the baffle plate 82 can squeeze the sludge, so that the sludge has less water when it is discharged.

[0025] The mudguard assembly also includes an externally threaded tube 84 fixed to the surface of the L-shaped plate 6, and the externally threaded tube 84 is located outside the shaft 3. An internally threaded sleeve 85 is rotatably connected to the surface of the externally threaded tube 84 by a thread. A first end plate 86 is fixed to the side of the internally threaded sleeve 85 near the mudguard 82. A spring 87 is fixedly connected to the side of the first end plate 86 near the second end plate 83. The other end of the spring 87 is in contact with the second end plate 83.

[0026] In actual use, different types of sludge require different squeezing forces from the mudguard 82. When it is necessary to adjust the squeezing force of the mudguard 82 on the sludge, simply rotate the inner threaded sleeve 85 to move it along the surface of the outer threaded tube 84, thereby moving the first end plate 86. The degree of compression of the spring 87, which is fixedly connected to the first end plate 86, will change. The higher the degree of compression of the spring 87, the greater the squeezing force of the spring 87 on the mudguard 82, and the greater the squeezing force of the mudguard 82 on the sludge. When it is necessary to reduce the squeezing force of the mudguard 82, simply rotate the inner threaded sleeve 85 to move it away from the sludge discharge port 21, thus lengthening the spring 87.

[0027] The filter assembly 11 includes a filter plate 111 located on the surface of the support plate 10. The filter plate 111 passes through the side opening 101 and is fixedly connected to a side plate 112 on the side near the side opening 101. A through hole 113 is provided on the top of the side plate 112. A screw 12 is fixed on the outer wall of the water tank 1 and above the side opening 101. An internal thread cap 114 is rotatably connected to the surface of one end of the screw 12 that passes through the through hole 113.

[0028] A handle 115 is fixedly connected to the side plate 112 away from the filter plate 111.

[0029] The squeezed water flows through the bottom of the dewatering tank 2 and into the receiving tank 1. At this time, the filter plate 111 can intercept a small amount of sludge in the water, and the sludge remains on the surface of the filter plate 111. When it is necessary to clean the sludge on the surface of the filter plate 111, unscrew the internal thread cap 114 on the screw 12, and then pull the filter plate 111 out from the side opening 101 through the handle 115 to clean the sludge on the surface of the filter plate 111.

[0030] A drain outlet 9 is provided at the bottom of the side wall of the water receiving tank 1. The filtered water falls into the bottom of the water receiving tank 1 and is discharged from the drain outlet 9.

[0031] Working principle: Sludge enters the dewatering tank 2 through the feed inlet and is located inside the stacked plates 5. The motor 7 starts, driving the spiral blades 4 to rotate, thus pushing the sludge towards the discharge port 21. Water is squeezed out through the gaps between the stacked plates 5, falling into the receiving tank 1 and then being filtered by the filter plate 111. Finally, the water is discharged from the drain port 9, while the sludge is squeezed and discharged at the discharge port 21 by the baffle plate 82. Of course, when using this device, the dryness of the sludge can be observed during discharge. The squeezing force of the baffle plate 82 on the sludge can be adjusted by rotating the inner threaded sleeve 85 to ensure that the squeezed sludge is dry enough.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sludge dewatering device for a screw press, comprising a water receiving tank (1), characterized in that: A dewatering tank (2) is fixedly installed at the top of the water receiving tank (1), and the dewatering tank (2) is designed to be inclined. The bottom of the dewatering tank (2) is hollowed out. A shaft (3) is rotatably connected inside the dewatering tank (2) through a bearing. Spiral blades (4) with different gaps are fixed on the surface of the shaft (3). Stacked blades (5) are installed inside the dewatering tank (2) and outside the spiral blades (4). A mud discharge port (21) is opened on the top side wall of the dewatering tank (2) near the spiral blades (4). A mud discharge port (21) is opened on the outer side wall of the dewatering tank (2) near the mud discharge port (21). An L-shaped plate (6) is fixed, and a motor (7) is fixed on the side of the L-shaped plate (6) away from the water receiving tank (1). The end of the shaft (3) located outside the dewatering tank (2) is fixedly connected to the output end of the motor (7). A mud-blocking assembly is installed on the side of the L-shaped plate (6) near the mud discharge port (21). A side opening (101) is opened on the side wall of the water receiving tank (1). A filter assembly (11) is provided inside the water receiving tank (1) and near the side opening (101). A support plate (10) is fixed on the inner side wall of the water receiving tank (1) and below the filter assembly (11).

2. The sludge dewatering device for a screw press according to claim 1, characterized in that: The mudguard assembly includes a sliding sleeve (81) that is slidably sleeved on the surface of the shaft (3), and a mudguard plate (82) and a second end plate (83) are fixed at both ends of the sliding sleeve (81), with the mudguard plate (82) located on the side near the mud discharge port (21).

3. The sludge dewatering device for a screw press according to claim 2, characterized in that: The mudguard assembly also includes an externally threaded tube (84) fixed to the surface of the L-shaped plate (6), and the externally threaded tube (84) is located outside the shaft (3). An internally threaded sleeve (85) is rotatably connected to the surface of the externally threaded tube (84) by a thread. A first end plate (86) is fixed to the side of the internally threaded sleeve (85) near the mudguard plate (82). A spring (87) is fixedly connected to the side of the first end plate (86) near the second end plate (83). The other end of the spring (87) is in contact with the second end plate (83).

4. The sludge dewatering device for a screw press according to claim 1, characterized in that: The filter assembly (11) includes a filter plate (111) located on the surface of the support plate (10). The filter plate (111) passes through the side opening (101) and is fixedly connected to a side plate (112) on the side near the side opening (101). A perforation (113) is provided on the top of the side plate (112). A screw (12) is fixed on the outer wall of the water receiving tank (1) above the side opening (101). An internal thread cap (114) is rotatably connected to the surface of one end of the screw (12) that passes through the perforation (113).

5. The sludge dewatering device for a screw press according to claim 4, characterized in that: A handle (115) is fixedly connected to the side plate (112) away from the filter plate (111).

6. The sludge dewatering device for a screw press according to claim 1, characterized in that: The bottom of the side wall of the water receiving tank (1) is provided with a drain outlet (9).

Images