CN2140779Y - Sieve drum type solid-liquid separation device - Google Patents

Abstract

A screen drum type solid-liquid separation device is provided with a screen drum with densely distributed meshes, the axis of the screen drum is provided with a main shaft, two ends of the main shaft are pivoted on a frame, the front end of the screen drum is also provided with a stop ring as a wastewater inlet, the other end of the screen drum is a solid component outlet, a spiral guide partition plate is wound between the inlet end and the outlet end of the inner wall of the screen drum, and the filtered solid component can gradually roll and dewater along the spiral guide partition plate and is discharged from the outlet by slow rotation of the screen drum; the driving mechanism is composed of engine, speed reducer, chain wheel and chain to drive the chain wheel fixed to the main shaft of screen drum for continuous slow running. The device of the utility model has simple structure, the transmission mechanism is not corroded by waste water, and the separation effect is good.

Description

The utility model relates to a solid-liquid separation device, in particular to a screen drum type solid-liquid separation device for separating solid components from waste water.

In the general wastewater purification treatment process, for wastewater containing a large amount of solid components, the solid components in the wastewater are usually separated first, which is beneficial to the separate treatment of the separated waste liquid and solid components. There are many types of solid-liquid separation devices for separating solid components, and the sieve drum solid-liquid separator is one of them.

Please refer to Fig. 1, the sieve cylinder type solid-liquid separator of prior art, ring gear 91 is fixedly installed at the two ends of a sieve cylinder 90 densely covered with meshes, and two sets of pinion gears 92 are meshed on both sides of the bottom of ring gear 91, and the sieve The cylinder 90 is supported and positioned, and an engine is used to drive one of the pinion gears 92 to drive the screen cylinder 90 to rotate. The screen cylinder 90 is also provided with a spiral partition 93. When the waste water is injected into the cylinder 90, the solid components are filtered out , and gradually roll out toward the outlet end along the spiral partition 93, and be collected. However, the disadvantages of this design are:

(1) The transmission mechanism is complicated, and two ring gears 91 and four pinion gears 92 must be provided. The ring gear 91 is usually made of cast iron, which is heavy and increases the operating load. If the design is too light, when the screen drum 90 is running, it will , prone to tooth skipping phenomenon.

(2) When the waste water is filtered out from the bottom of the screen cylinder 90, the driving mechanisms such as the pinion gear 92 and the ring gear 91 are easily damaged by the waste water erosion, and the lubrication problem is also difficult to solve.

The main purpose of the utility model is to provide an improved sieve drum type solid-liquid separation to make its structural design more reasonable and practical.

Another object of the present utility model is to provide a composite screen cylinder solid-liquid separation device to improve the separation effect.

In order to achieve the above object, the utility model provides a screen drum type solid-liquid separation device, which is characterized in that it includes:

frame;

The sieve cylinder with densely covered water filter meshes has a main shaft at its axis, and the two ends of the main shaft are pivotally arranged on the frame. , There is a spiral guide partition around the outlet end;

The engine is installed on the transmission mechanism on the frame, and the engine is equipped with a reducer. The sprocket above and the other sprocket fixed on the main shaft of the screen cylinder are linked by the sleeve of the chain.

The aforementioned sieve cylinder type solid-liquid separation device is characterized in that: a water spray pipe is provided beside the sieve cylinder, several spray holes are arranged on the water spray pipe, and a booster pump is connected to the water spray pipe.

The aforementioned screen drum type solid-liquid separation device is characterized in that: the mesh on the screen drum can be multi-stage, the mesh near the inlet end is the smallest, and gradually expands step by step.

The aforementioned sieve drum type solid-liquid separation device is characterized in that: the inlet end of the sieve drum can be slightly lower than the outlet end and is slightly inclined.

The aforementioned sieve drum type solid-liquid separation device is characterized in that a liquid collecting pan can be provided at the bottom of the sieve drum.

The aforementioned sieve drum type solid-liquid separation device is characterized in that: the sieve drum is also provided with a scraper made of soft elastic material that bounces against it.

The aforementioned sieve cylinder type solid-liquid separation device is characterized in that: the mesh of the sieve cylinder can be appropriately enlarged, and a small sieve cylinder with a smaller mesh is pivotally installed on the bottom frame.

In order to achieve the above object, the utility model adopts the technical scheme and its effect, now according to three preferred embodiments, and in conjunction with the accompanying drawings are described in detail as follows.

Brief description of the drawings:

Fig. 1 is a schematic diagram of a screen drum type solid-liquid separator in the prior art.

Fig. 2 is a perspective view of the first embodiment of the utility model.

Fig. 3 is a side view of the first embodiment of the utility model.

Fig. 4 is a sectional view of section 8-8 shown in Fig. 3 .

Fig. 5 is a perspective view of the second embodiment of the utility model.

Fig. 6 is a side view of the third embodiment of the utility model.

Fig. 7 is a cross-sectional view of the third embodiment of the present invention.

Fig. 2, 3, 4 is the solid-liquid separation device of the first embodiment of the utility model, and it comprises: frame 1, sieve cylinder 2, transmission mechanism 3, spray washing mechanism 4. Mesh holes 21 are densely covered on the screen cylinder 2, and reinforcing rings 22 are fixed at intervals, and a main shaft 24 is erected on the axis of the screen cylinder 2 with a rib bar 23, and the two ends of the main shaft 24 are pivotally arranged on the frame body 1; the front end of the screen cylinder 2 It is the waste water inlet, and its end is surrounded by a blocking ring 25 to prevent the waste water from overflowing from the front end; the front end of the frame 1 is provided with a bucket 11 for guiding the waste water into the sieve cylinder 2, and the other end of the sieve cylinder 2 is a discharge port for solid components. Between the inlet and outlet ends of the inner wall of the screen cylinder 2, there is a spiral guide partition 26 around it. After the waste water is fed into the screen cylinder 12 for filtration, the gravity of the inversion generated by the slow rotation of the screen cylinder 2 can make the filtered waste The solids are gradually rolled and dehydrated to the rear end along the spiral guide partition 26, and then discharged from the discharge port; on the frame 1 at the bottom of the screen cylinder 2, a liquid collecting pan 12 is provided for collectively discharging the filtered waste water. The transmission mechanism 3 is composed of an engine 31 installed on the frame 1 via a reducer 32, and a sprocket 35 fixed on the main shaft 24 driven by a sprocket 33 and a chain 34, so as to drive the screen drum 2 to perform continuous slow operation. In addition, the inlet end of the screen cylinder 2 is slightly lower than the outlet end and is slightly inclined to prevent the waste water from flowing to the outlet end and reduce the dehydration efficiency. This inclination state can be adjusted by the height difference of the frame 1 feet. In the water storage tank 41 of spray washing machine 4, be provided with water level control valve, can introduce current and keep certain water level. The water spray pipe 43 that is located on the inner side of the liquid collection tray 12 only needs to start the booster pump 42 when necessary, and the water in the water storage tank 41 can be pumped into the water spray pipe 43 for reverse spraying of the screen cylinder 2. wash. In addition, a scraper 13 (see Figure 4) that bounces against the screen drum 2 can also be provided on the liquid collecting tray 12 on the other side of the screen drum 2. It is made of soft elastic material and can be stuck on the mesh 21. The protruding fiber impurities are scraped off to ensure a good filtering effect.

Therefore, use the pump to pump the waste water, and send it into the screen cylinder 2 through the bucket 11. The rotating screen cylinder 2 can filter the waste water and discharge it from the liquid collection tray 12. Gradually roll and discharge to the slightly higher outlet end, so as to achieve the purpose of solid-liquid separation; the mesh on the screen drum 2 can be set to multi-stage, the front mesh is small (such as φ0.6mm), and the second stage is slightly larger (such as φ0.8mm), the last section is larger (such as φ1.0mm), because the wastewater entering the screen drum 2 has a high water content and is easy to filter, so the mesh should be slightly smaller, and the later stage, due to the water content It has been greatly reduced, the viscosity is increased, it is easy to block, and it is not easy to dehydrate. Therefore, it is advisable to slightly expand the mesh to improve the dehydration effect. After running for a period of time, in order to prevent the screen cylinder 2 meshes from being blocked, the spray washing mechanism 4 can be started to perform reverse washing.

As can be seen from the above, this embodiment has the following advantages:

(1) The structure is simple and light, and all the weight is borne by the main shaft. The transmission mechanism is only responsible for the rotation drive, so it saves labor and wears less, and the transmission mechanism is not corroded by waste water.

(2) The mesh of the screen cylinder adopts multi-stage aperture design, which has high separation effect.

Fig. 5 is the solid-liquid separation device of the second embodiment of the utility model, and it also includes: frame 1, sieve cylinder 2, transmission mechanism 3, spray washing mechanism 4, and it is roughly the same as the first embodiment, the difference is that : The frame 1 is directly installed on the banks 5 of the waste ditch, the bucket 15 directly receives the waste water discharged from the ditch, and guides it into the sieve cylinder 2 for filtration and separation, and the discharge port at its end is connected with a conveying mechanism 51, so that The separated solid components were removed and concentrated. The advantage of such installation is: waste water is directly injected into the screen drum 2 for filtration and treatment, without the need for another pump to pump, which can reduce operating costs, and the solid components will not be stirred up by pumping, so the separation effect can be improved.

Please refer to Figures 6 and 7, the third embodiment of the utility model provides a composite solid-liquid separation device, which uses two sets of stacked screen cylinders 61, 62 at the same time; the top screen cylinder 61 has a larger mesh, The waste water is first sent to the top sieve cylinder 61 for a filtration and separation treatment to separate most of the larger solid components in the waste water. The waste water filtered by the top sieve cylinder 61 is collected by the liquid collection tank 63 and then introduced to the bottom Secondary filtration and separation treatment is carried out in the sieve cylinder 62 of the bottom sieve cylinder 62. The mesh on the bottom sieve cylinder 62 is finer, which is used to filter out the remaining smaller solid components, so that the solid components in the discharged waste water are reduced to a minimum, and are filtered The solid components that go out can be taken away by conveying mechanism 52 for centralized treatment equally. Generally speaking, in a device with a single sieve cylinder, if a large mesh is used, the smaller solid components will be lost, so that there will still be a large amount of solid components in the discharged wastewater, making the separation effect poor; if a small mesh is used, It is easy to block, reduce the filtration efficiency and slow the separation speed. However, if the above-mentioned compound solid-liquid separation device is used, the problem that the separation speed and the separation effect cannot be balanced can be solved.

In summary, the utility model is indeed a solid-liquid separation device with high processing efficiency.

Claims (7)

1, a kind of screen drum formula equipment for separating liquid from solid, it is characterized in that: it comprises frame;

Gather the above screen drum of drainage mesh, its axle center is provided with main shaft, and the main shaft two ends are hubbed on the frame, and the screen drum front end is provided with catch ring and forms the waste water import, and end is to be arranged with solid composition outlet helical form between its inwall import and export end and to lead dividing plate in addition;

Engine is installed in the transmission mechanism on the frame, and engine is provided with decelerator, top sprocket wheel and be installed in another sprocket wheel on the screen drum main shaft by the sheathed of chain interlock.

2, screen drum formula equipment for separating liquid from solid according to claim 1 is characterized in that: screen drum is other to be provided with sparge pipe, and sparge pipe is provided with several spray orifices, and a force (forcing) pump is connected with sparge pipe.

3, screen drum formula equipment for separating liquid from solid according to claim 1, it is characterized in that: the mesh on the screen drum is a multisection type, by the mesh minimum of entrance point, enlarges gradually piecemeal backward.

4, screen drum formula equipment for separating liquid from solid according to claim 1, it is characterized in that: the screen drum entrance point slightly is skewed a little less than the port of export.

5, screen drum formula equipment for separating liquid from solid according to claim 1 is characterized in that: the screen drum bottom is provided with catch tray.

6, screen drum formula equipment for separating liquid from solid according to claim 1 is characterized in that: screen drum is provided with the butted scraper plate of being made by flexible resilient material thereon.

7, screen drum formula equipment for separating liquid from solid according to claim 1, it is characterized in that: the mesh of screen drum can suitably strengthen, and the less little screen drum of mesh that is pivoted again on its bottom frame.

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