Dehydration device for solid-liquid separation

Abstract

The utility model belongs to the technical field of coal washing equipment, and particularly discloses a dewatering device for solid-liquid separation, which comprises a support, a screen box is arranged on the support, a screen plate is arranged at the bottom of the screen box, a vibration motor is arranged on the upper surface of the screen box, and a falling box is arranged at one end of the screen box. The screening box and the falling box are arranged on the support, the falling box is used for buffering materials, then the screening box is used for vibrating and screening moisture of the materials, the phenomenon that the moisture content of 50-0.5 mm washing products is too high can be effectively avoided, normal operation of a washing system is guaranteed foreseeably, and the washing device is practical, safe and obvious in dehydration effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal washing equipment, and in particular relates to a dehydration device for solid-liquid separation. Background Art

[0002] At present, most coal washing plants in China mainly use various types of vibrating screens, fixed screens, centrifugal dehydrators and filter presses for dehydration of washed products. Fixed screens usually use special types of screens, while centrifugal dehydrators and filter presses are mainly used for dehydration of fine particles. As the first step in the dehydration process of the washing process, the vibrating screen plays a vital role. It mainly uses an inertial vibrator to provide vibration. The longer the material stays on the screen surface, the better the dehydration effect. A large amount of water enters the screen through the screen gap, and the washed products stay on the screen and enter the product transportation line.

[0003] However, due to the high cost of the equipment, the large space it occupies, and the various accessories that match it are complicated and special, it cannot meet the actual production situation of the Jinhe Coal Mine Washing Plant. In order to solve this problem, the engineering and technical personnel were organized to discuss and conduct actual on-site research. A dehydration device for solid-liquid separation was designed and processed, and its dehydration particle size range is 50-0.5mm, which can not only solve the large amount of water in the washed products, but also help improve the production efficiency of the washing process. Utility Model Content

[0004] In view of the above problems in the prior art, the purpose of the utility model is to provide a dehydration device for solid-liquid separation.

[0005] In order to meet the above objectives, the technical solution adopted by the utility model is:

[0006] A dehydration device for solid-liquid separation comprises a bracket, a screen box is arranged on the bracket, a screen plate is arranged at the bottom of the screen box, a vibration motor is arranged on the upper surface of the screen box, and a drop box is arranged at one end of the screen box.

[0007] Preferably, a motor fixing pull plate is provided on the upper surface of the screen box, a motor fixing base is installed on the motor fixing pull plate, and a vibration motor is installed on the motor fixing base.

[0008] Preferably, a plurality of symmetrical lifting devices are provided on both sides of the screen box.

[0009] Preferably, the drop box is installed on one side of the screen box, and a supporting collar is provided at the bottom between the drop box and the screen box.

[0010] Preferably, a tensioning collar is provided at the bottom of the bracket, a plurality of bracket collars are provided on the legs of the bracket, a bracket fixing pull plate is connected between the bracket collars, and a buffer rubber pad is provided at the connection between the bracket and the screen box.

[0011] Preferably, a long cross beam is provided at the upper end of the bracket, the screen box is installed on the bracket through the long cross beam, side support flaps are provided at the end of the long cross beam where the screen box and the bracket are installed, and a water retaining weir is provided at the bottom of the screen box.

[0012] The beneficial effects of the utility model are:

[0013] (1) The utility model arranges a screen box and a drop box on a bracket, uses the drop box to buffer the material, and then uses the screen box to vibrate and screen the moisture of the material, which can effectively solve the problem of excessive moisture in the 50-0.5mm washed product, thereby foreseeably ensuring the normal operation of the washing system. It is both practical and safe, and has an obvious dehydration effect.

[0014] (2) The use of the solid-liquid separation and dehydration device ensures efficient dehydration of materials and meets the user's requirements for the moisture index of washed products.

[0015] (3) The solid-liquid separation and dehydration device is easy to obtain, simple to manufacture and low in cost. It has been applied to the dehydration process of 50-0.5 mm washed products in the Jinhe Coal Mine Washing Plant. The equipment operates safely and reliably, saves a lot of costs and has satisfactory results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural front view of the solid-liquid separation and dehydration device;

[0017] Figure 2 It is a structural side view of the solid-liquid separation and dehydration device;

[0018] Figure 3 It is a top view of the structure of the solid-liquid separation and dehydration device;

[0019] Figure 4 This is a diagram of the support structure of the solid-liquid separation and dehydration device.

[0020] In the figure: 1-1, screen box, 1-2, screen plate, 1-3, vibration motor, 1-4, lifting device, 1-5, drop box, 1-6, support flap, 1-7, bracket, 1-8, tensioning flap, 1-9, buffer rubber pad, 2-1, side support flap, 2-2, water retaining weir, 2-3, long beam, 3-1, motor fixing pull plate, 3-2, motor fixing base, 4-1, movable beam, 4-2, bracket flap, 4-3, bracket fixing pull plate. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with specific embodiments:

[0022] A dehydration device for solid-liquid separation comprises a bracket, wherein a screen box 1-1 is provided on the bracket 1-7, a screen plate 1-2 is provided at the bottom of the screen box 1-1, a vibration motor 1-3 is provided on the upper surface of the screen box 1-1, and a drop box 1-5 is provided at one end of the screen box 1-1. The screen box is welded with 12mm wear-resistant high manganese steel plate as a whole, and the overall size is 2300*1200*400mm. A drop buffer box of 1200*400*400mm is reserved at the feeding end to provide space for material buffering and laying.

[0023] A motor fixing pull plate 3-1 is provided on the upper surface of the screen box 1-1, a motor fixing base 3-2 is installed on the motor fixing pull plate 3-1, a vibration motor 1-3 is installed on the motor fixing base 3-2, a 1500*300mm motor base is welded and reinforced with a 20mm ordinary carbon steel plate, a 0.55KW vibration motor is fixed on the screen body, and three 1500*600mm 0.5mm stainless steel sieve plates are installed inside the screen body.

[0024] A plurality of symmetrical lifting devices 1-4 are provided on both sides of the screen box 1-1.

[0025] The drop box 1-5 is installed on one side of the screen box 1-1, and a supporting flap 1-6 is provided at the bottom between the drop box 1-5 and the screen box 1-1.

[0026] A tensioning plate 1-8 is provided at the bottom of the bracket 1-7, and several bracket plates 4-2 are provided on the legs of the bracket 1-7. A bracket fixing plate is connected between the bracket plates 4-2. A buffer rubber pad 1-9 is provided at the connection between the bracket 1-7 and the screen box 1-1. The bracket is made of two 10# channel steel legs, one side of which is welded together, and there are 4 in total, of which 2 pillars are 2400*100*100mm in size, and the other 2 pillars are 1700*100*100mm in size. Plates are welded on both sides of the 4 brackets, and they are fixed and tightened with ∠40# angle steel and M24*45mm high-strength bolts to ensure that the bracket is firm and reliable. The bracket base is reserved with anchor bolt holes, and expansion bolts are driven into the ground. Four buffer rubber pads are added at the connection between the bracket and the screen box to provide buffering and vibration reduction for the entire screen body.

[0027] A long crossbeam 2-3 is provided at the upper end of the bracket 1-7, and the screen box 1-1 is installed on the bracket 1-7 through the long crossbeam 2-3. A side support plate 2-1 is provided at the end of the long crossbeam 2-3 where the screen box 1-1 and the bracket 1-7 are installed. A water retaining weir 2-2 is provided at the bottom of the screen box 1-1. The water retaining weir should not be set too high. It is recommended that the height of the water retaining weir be 10-50mm. If it exceeds 50mm, it is very easy to cause material jamming and poor material discharge.

[0028] The screen surface inclination angle of the entire screen body is designed to be 25°, and the coal passing through the screen surface is about 60t / h. A row of 30mm high water retaining weirs is designed and processed in front of the chute before the screen to increase the retention time of the material on the screen surface and achieve better dehydration effect.

[0029] This device has been applied in the Jinhe Coal Mine Coal Washing Plant. The screen surface inclination angle of the entire screen box is designed to be 25°. The material moves forward slowly on the screen surface and stays there for a long time, which enhances the water penetration rate of the material. (From the authority) Since the entire screen box is welded and processed by high manganese steel plates, the overall stiffness and vibration resistance fully meet the requirements. The brackets supporting the entire screen box are all processed by welding technology, and support flaps, tension flaps, side support flaps and fixed pull plates are used between the brackets, between the brackets and the screen box, and between the brackets and the crossbeams to maintain the firmness and stability of the solid-liquid separation and dehydration device, ensuring that it can operate stably and safely in the installation area. The buffer rubber pad connected between the bracket and the screen box provides a buffering effect for all brackets, so that the vibration is generated in the screen plate and the screen box, ensuring that the vibration frequency of the solid-liquid separation and dehydration device meets the design requirements. In the process of uniform material feeding, a set of water retaining weirs are designed in front of the screen, so that the material stays at the front end of the screen box for the longest time and removes more water. While removing moisture in time, it also ensures the safe and stable operation of the washing system. Currently, two solid-liquid separation dehydration devices have been used in the Jinhe Coal Mine Washing Plant, with significant results.

[0030] Working principle and process: When the coal washing plant is in normal production, 50-0.5mm materials are fed into the screen box from the product chute, and are first buffered in the reserved drop box to reduce the flow rate of the materials, and the materials are evenly spread in the drop box. After the vibration motor is turned on, the material layer is constantly and fully loosened, the particles constantly and violently collide with the screen surface, and slowly flow through the screen surface. The width of the screen surface determines the processing capacity of the screen. The wider the screen surface, the greater the processing capacity. The length of the screen determines the screening efficiency. The longer the screen surface, the higher the efficiency. Since the designed screen surface inclination angle is 25°, the material moves forward slowly on the screen surface and stays for a long time, which enhances the screening rate of water in the material.

Claims

1. A dehydration device for solid-liquid separation, comprising a support, characterized in that: A screen box (1-1) is provided on the support (1-7), a screen plate (1-2) is provided at the bottom of the screen box (1-1), a vibration motor (1-3) is provided on the upper surface of the screen box (1-1), a drop box (1-5) is provided at one end of the screen box (1-1), and a plurality of symmetrical lifting devices (1-4) are provided on both sides of the screen box (1-1); the drop box (1-5) is installed on one side of the screen box (1-1), and a supporting flap plate (1-6) is provided at the bottom between the drop box (1-5) and the screen box (1-1); a long crossbeam (2-3) is provided at the upper end of the support (1-7), the screen box (1-1) is installed on the support (1-7) through the long crossbeam (2-3), a side supporting flap plate (2-1) is provided at the end of the long crossbeam (2-3) where the screen box (1-1) and the support (1-7) are installed, and a water retaining weir (2-2) is provided at the bottom of the screen box (1-1).

2. A dehydration device for solid-liquid separation according to claim 1, characterized in that: The upper surface of the screen box (1-1) is provided with a motor fixing pull plate (3-1), a motor fixing base (3-2) is mounted on the motor fixing pull plate (3-1), and a vibration motor (1-3) is mounted on the motor fixing base (3-2).

3. A dehydration device for solid-liquid separation according to claim 1, characterized in that: A tensioning collar plate (1-8) is provided at the bottom of the bracket (1-7), a plurality of bracket collar plates (4-2) are provided on the legs of the bracket (1-7), a bracket fixing pull plate is connected between the bracket collar plates (4-2), and a buffer rubber pad (1-9) is provided at the connection between the bracket (1-7) and the screen box (1-1).

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