CN205461187U - Gravity type valveless filter - Google Patents

Abstract

The utility model relates to the field of water purification treatment equipment, in particular to a gravity type valveless filter. The filter includes a distribution box on the tank, a drain tank and a siphon device. The siphon device includes a siphon rising pipe, a siphon descending pipe and a siphon auxiliary pipe connected in sequence. The siphon rising pipe and the siphon auxiliary pipe extend into the inside of the tank. The bottom of the pipe is connected with a siphon breaker pipe; the siphon rising pipe is connected with a water inlet pipe, and the inside of the tank is provided with a drainage pipe and a water outlet. There is an active filter bed between the filter area and the filter area; the active filter bed includes a support, a filter material, and a filter plate composed of several filter units. A plurality of equal water filter tanks are formed, and a plurality of strip-shaped water filter holes are arranged on the water filter tanks. The gravity valveless filter solves the problem of uneven backwash water distribution in the prior art, and has good water quality.

Description

A Gravity Valveless Filter

technical field

The utility model relates to the field of water purification treatment equipment, in particular to a gravity valveless filter.

Background technique

Gravity valveless filters are widely used in surface water purification, iron and manganese removal in groundwater, bypass filtration of circulating water, removal of suspended impurities in production wastewater, subsequent filtration of organic sewage after biochemical treatment and secondary sedimentation tank treatment, and indoor swimming pool water The filter is an ideal water treatment equipment.

However, the current gravity valveless filter still has shortcomings such as uneven distribution of backwash water and uneven water collection. Especially in the process of backwashing, due to uneven water flow, the filter layer of the gravity valveless filter can only Partial flushing forms a dead angle, which cannot achieve a completely uniform flushing effect, greatly reducing the cleaning effect on the filter material, thereby affecting the quality of the effluent. Therefore, a gravity valveless filter is needed to solve the problem of uneven backwash water distribution in the prior art.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a gravity-type valveless filter with a simple and reasonable structure to solve the problem of uneven backwash water distribution in the prior art, and has good water quality.

The technical scheme of the utility model is achieved in the following way: a gravity valveless filter includes a distribution box on the tank body, a drain tank and a siphon device, and the siphon device includes a siphon ascending pipe, a siphon descending pipe and a siphon Auxiliary pipe, the siphon rising pipe and the siphon auxiliary pipe extend into the inside of the tank body, the bottom of the siphon auxiliary pipe is connected with a siphon breaking bucket pipe; the siphon rising pipe is connected with a water inlet pipe, and the inside of the tank body is provided with a drainage pipe and a water outlet , it is characterized in that, the interior of the tank body is provided with a water collection area, a filter area and a clean water area from bottom to top, and an active filter bed is provided between the water collection area and the filter area; the active filter bed includes a bracket, a filter material And a water filter plate composed of several water filter units, the water filter unit includes a shell, and the shell forms a number of equal water filter tanks through its internal transverse wall and vertical wall, and the bottom of the water filter tank is provided with several water filter hole.

The water filtering unit is rectangular; the water filtering holes on the adjacent water filtering tanks are arranged in a criss-cross pattern.

The filter material is arranged on the water filter plate, which includes a gravel layer, quartz sand and anthracite layer arranged sequentially from bottom to top.

The thickness of the gravel layer is 100-300 mm, the thickness of the quartz sand is 200-350 mm, and the thickness of the anthracite layer is 250-400 mm.

The width of the filter hole is 0.3-1mm, and the length is 15-50mm.

The cross section of the top of the drainage tube is trapezoidal.

The water filtering unit is made of ABS engineering plastics.

The utility model solves the defects in the background technology, and has the following beneficial effects:

The utility model provides a gravity type valveless filter with reasonable structure and stable and reliable water quality. When backwashing, when the water flows through the filter water plate, the water flow is slowed down and evenly distributed by several filter water tanks in each water filter unit, and the water flows into the filter material evenly through the strip filter holes in the filter tank. Therefore, the filter material will not be washed away, the filter material can be evenly distributed, there will be no dead angle, and the backwash water will be evenly distributed. The filter material is composed of gravel layer, quartz sand and anthracite layer, and its filtering effect is good.

Description of drawings

Fig. 1 is a structural representation of a gravity type valveless filter;

Fig. 2 is the structural representation of active filter bed among Fig. 1;

Fig. 3 is a schematic structural view of the water filtration unit in Fig. 2;

In the figure: 1-tank body, 2-water collection area, 3-active filter bed, 31-water filter unit, 32-shell, 33-water filter tank, 34-water filter hole, 4-filter area, 5-clear water area , 6-water inlet pipe, 7-drainage pipe, 8-distribution box, 9-siphon rising pipe, 10-siphon auxiliary pipe, 11-siphon destroying bucket pipe, 12-siphon descending pipe, 13-drainage tank.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

A kind of gravity type valveless filter embodiment as shown in Fig. 1, Fig. 2 and Fig. 3, comprises the distribution box 8 on the tank body 1, drainage tank 13 and siphon device, and siphon device comprises the siphon riser pipe 9 that connects in sequence 1. The siphon descending pipe 12 and the siphon auxiliary pipe 10, the siphon ascending pipe 9 and the siphon auxiliary pipe 10 extend into the inside of the tank body 1, the bottom of the siphon auxiliary pipe 10 is connected with a siphon destroying bucket pipe 11; the siphon ascending pipe 9 is connected with a water inlet pipe 6 , the inside of the tank body 1 is provided with a drainage pipe 7 and a water outlet, the inside of the tank body 1 is provided with a water collection area 2, a filter area 4 and a clean water area 5 from bottom to top, and an active The filter bed 3; the active filter bed 3 includes a support, a filter material and a water filter plate formed by a plurality of filter units 31, and the filter unit 31 includes a shell 32, and the shell 32 is surrounded by a number of equal plates through its internal transverse wall and vertical wall. The water filter tank 33 is provided with some strip water filter holes 34 on the water filter tank 33. The water filter unit 31 is rectangular; the water filter holes 34 on adjacent water filter tanks 33 are arranged in a criss-cross pattern. The filter material is arranged on the water filter plate, which includes a gravel layer, quartz sand and anthracite layer arranged in sequence from bottom to top. The thickness of the gravel layer is 100-300mm, the thickness of the quartz sand is 200-350mm, and the thickness of the anthracite layer is 250-400mm. The strip filter holes are 0.3-1mm wide and 15-50mm long. The cross section of the top of the drainage tube 7 is trapezoidal. The water filter unit 31 is made of ABS engineering plastics.

The working process of the utility model is: when working, the raw water enters the valveless filter tank body 1 from the water inlet pipe 6 under the action of gravity, then enters the filter area 4, and the filter area 4 is provided with an active filter bed 3 and filter material, and then Pass through the filter layer and then enter the water collection area 2. At this time, due to the presence of the active filter bed 3, when the water flows through the filter water plate, the water flow is slowed down and evenly distributed by several filter water tanks 33 in each filter water unit 31, and the water flows through the filter water tank 33. The strip-shaped filter holes in the filter evenly enter the filter material. Because of the uniform water intake, the filter material will not be washed away, and the filter material can be evenly distributed without dead ends, so the backwash water distribution is even. Turbidity such as suspended matter in the raw water is intercepted and adsorbed on the surface of the filter material layer and in the filter material layer, and the water entering the catchment area 2 is filtered clean water. Under the action of the level difference between the two liquid levels before and after filtration or the pressure of raw water, the clean water enters the clear water area 5 from the water collection area 2 from bottom to top, and then overflows from the clear water area 5 into the drainage pipe 7 on the top, and flows along the drainage pipe. 7 Flow through the outlet to the outlet pipe. Since the top section of the drainage pipe 17 is trapezoidal, the water outlet speed is greatly accelerated. As the filtration continues, the turbidity such as suspended matter intercepted and adsorbed in the filter material layer gradually increases, and the turbidity also penetrates the filter layer and enters the water collection area 2 and the clear water area 5. At the same time, the resistance of the filter material to filter is also gradually increasing. Larger, the filtration rate also gradually decreases, and the liquid level of the raw water in the siphon rising pipe 9 also gradually rises. When reaching the highest water level, the valveless filter automatically enters the backwashing process immediately. When the water surface in the clear water area 5 dropped to the siphon destroying bucket mouth 11, air entered the top of the inverted siphon descending pipe 12 from the siphon destroying bucket mouth 11, so the siphon was destroyed, and the backwash water in the siphon device was cut off. Backwashing is complete. At the same time, the filter material in the expanded state falls, and the raw water still enters the filter zone 4, so another cycle of filter work begins.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (7)

1. a kind of gravity type valveless filter, comprise distribution box (8) on the tank body (1), drain groove (13) and siphon device, described siphon device comprises the siphon rising pipe (9) that connects successively, siphon The descending pipe (12) and the siphon auxiliary pipe (10), the siphon ascending pipe (9) and the siphon auxiliary pipe (10) extend into the inside of the tank (1), and the bottom of the siphon auxiliary pipe (10) is connected with a siphon breaker bucket pipe (11); the siphon rising pipe (9) is connected with a water inlet pipe (6), and the inside of the tank body (1) is provided with a drainage pipe (7) and a water outlet, and it is characterized in that the inside of the tank body (1) A water collection area (2), a filter area (4) and a clear water area (5) are arranged from bottom to top, and an active filter bed (3) is provided between the water collection area (2) and the filter area (4); The active filter bed (3) includes a support, a filter material and a water filter plate combined by several water filter units (31), and the water filter unit (31) includes a shell (32), and the shell (32) passes through it The inner transverse wall and the vertical wall enclose a plurality of equal water filter tanks (33), and the bottom of the water filter tank (33) is provided with a plurality of strip-shaped water filter holes (34). 2. A gravity type valveless filter according to claim 1, characterized in that: the water filter unit (31) is rectangular; the water filter holes (34) on the adjacent filter water tanks (33) ) arranged in a criss-cross pattern. 3. A gravity valveless filter according to claim 1 or 2, characterized in that: the filter material is arranged on the water filter plate, which includes a gravel layer, quartz sand and Anthracite layer. 4. A gravity valveless filter according to claim 3, characterized in that: the thickness of the gravel layer is 100-300 mm, the thickness of the quartz sand is 200-350 mm, and the thickness of the anthracite layer is 250-400 mm. 5. A gravity valveless filter according to claim 4, characterized in that: said water filter hole (34) is 0.3-1mm wide and 15-50mm long. 6. A gravity valveless filter according to claim 5, characterized in that: the cross-section of the top of the drainage pipe (7) is trapezoidal. 7. A gravity type valveless filter according to claim 6, characterized in that: the water filtering unit (31) is made of ABS engineering plastics.