CN222304885U - Single valve linkage speed control siphon system for filter tank - Google Patents

Abstract

The utility model provides a single-valve linkage speed control siphon system for a filter tank, which comprises a first siphon pipe group and a second siphon pipe group, wherein the filter tank comprises a filter operation layer and a back flushing layer, the inner side and the outer side of the filter tank are respectively provided with a water seal base, the first siphon pipe group is spanned on the filter tank, one side of the first siphon pipe group is positioned in the back flushing layer, the other side of the first siphon pipe group is arranged in the water seal base on the outer side of the filter tank, the second siphon pipe group is spanned in the water seal base on the inner side of the filter tank and between a water inlet channel, the first siphon pipe group is used for back flushing and discharging sewage in the back flushing layer, the second siphon pipe group is used for supplementing water for the filter operation layer, the tops of the first siphon pipe group and the second siphon pipe group are respectively provided with an air inlet pipe group, and the two air inlet pipe groups are connected through a single-valve speed control assembly. The scheme has compact structure and detachability, greatly improves the control efficiency, has low overall maintenance cost and has good economic benefit.

Description

Single valve linkage speed control siphon system for filter tank

Technical Field

The utility model relates to the technical field of tap water production, in particular to a single valve linkage speed control siphon system for a filter tank.

Background

The filtering tank is an important process in the technical field of water treatment, the filtering process comprises two stages of filtering and back flushing, the filtering stage is a water body treated by the preamble process, fine suspended matters and colloid substances are trapped between filter materials when passing through the filter materials, the filtered and purified water body is collected by the water collecting pipe and then enters a clean water tank or the next process, and the filtering stage is the last process for reducing the turbidity of the water body in the water treatment process. The back flushing stage is to back flush the filtered water body with the water distribution system to deposit trapped particle impurity and drain the water through the drain pipe to restore the excellent filtering effect and ensure the efficient operation of the filtering pond.

The siphon filter is one of the quick filter forms of replacing water inlet and water discharge valves with a siphon, and the siphon filter can realize the start and stop of water inlet and water discharge by driving and controlling the vacuum environment of the siphon through a vacuum pump or hydraulic power and the like without controlling a large valve. The siphon vacuum environment forming speed is slower when the hydraulic control is performed only, the vacuum environment forming time can be prolonged when the air leaks at the hidden part, the vacuum pump control system can solve the problem, but the pneumatic system is additionally built, and the pneumatic system has the common characteristics that the valves required for controlling the single-lattice filter are more, however, one group of siphon filters at least consists of 6-8-lattice filters, and the number of the siphon filters reaches 16-22 lattice, so that the siphon filters need to operate more valves, the steps are complex, the whole required time is long, the volume of the siphon pipe group is more difficult to replace, and certain difficulty is brought to automatic control and later maintenance.

Disclosure of utility model

The utility model provides a single valve linkage speed control siphon system for a filter tank, which solves the problems of relatively troublesome control on water in the filter tank, long time consumption and inconvenient later maintenance.

In order to solve the technical problems, the single-valve linkage speed control siphon system for the filter tank comprises a first siphon pipe set and a second siphon pipe set, wherein the filter tank comprises a filter operation layer and a back flushing layer, water seal bases are respectively arranged on the inner side and the outer side of the filter tank, the first siphon pipe set is spanned on the filter tank, one side of the first siphon pipe set is positioned in the back flushing layer, the other side of the first siphon pipe set is arranged in the water seal base on the outer side of the filter tank, the second siphon pipe set is spanned between the water seal base on the inner side of the filter tank and an inflow channel, the first siphon pipe set is used for back flushing and discharging sewage in the back flushing layer, the second siphon pipe set is used for supplementing water to the filter operation layer, air inlet pipe sets are respectively arranged at the tops of the first siphon pipe set and the second siphon pipe set, and the two air inlet pipe sets are connected through a single-valve speed control assembly.

In the preferred scheme, the single valve speed control assembly comprises a high-pressure water control valve, a high-pressure water inlet pipe is arranged on one side of the high-pressure water control valve, two quick drain pipes are arranged on the other side of the high-pressure water control valve, the two quick drain pipes are arranged opposite to the filter tank, the bottom of the quick drain pipe close to one side of the second siphon pipe group is located in a filter operation layer, the bottom of the quick drain pipe close to one side of the first siphon pipe group is higher than the highest water storage position of the filter tank, the air inlet pipe group comprises an exhaust pipe and a ball valve arranged on the exhaust pipe, a water injector is arranged on the quick drain pipe, and the water injector is communicated with the exhaust pipe through a first air suction pipe.

In the preferred scheme, the gravity exhaust assembly is further arranged in the water inlet channel and comprises a water outlet, one side of the water outlet is provided with a gravity exhaust control valve, the water outlet is connected with an air inlet pipe group on the second air suction pipe group through a second air suction pipe, and the bottom of the gravity exhaust control valve is opposite to the filter tank.

In the preferred scheme, be provided with the bearing platform in the water seal base, the bottom of first siphon nest of tubes and second siphon nest of tubes is provided with the bracing piece, bracing piece and bearing platform joint, and bearing platform and bracing piece are connected and are formed the rivers passageway.

In the preferred scheme, the first siphon group and the second siphon group have the same structure, and the first siphon group and the second siphon group comprise bent pipes, straight pipes are arranged on two sides of the bent pipes in parallel, the bent pipes are connected with the straight pipes through nuts and screws, and the supporting rods are arranged on the lower sides of the straight pipes.

In the preferred scheme, the lower part symmetry of return bend is equipped with two first closing plates, and the upside and the downside of straight tube are provided with second closing plate and first closing plate respectively, and the middle part of first closing plate and second closing plate is provided with first heavy groove and second heavy groove respectively, and the sealing washer is located first heavy groove and second heavy inslot, and first closing plate and second closing plate pass through nut and screw connection.

In the preferred scheme, first closing plate and second closing plate include first concave-convex surface and second concave-convex surface respectively, and first concave-convex surface and the laminating of second concave-convex surface are equipped with first counterpoint platform and second counterpoint platform respectively in the middle part of first concave-convex surface and second concave-convex surface, and first heavy groove and second heavy groove set up respectively on first counterpoint platform and second counterpoint platform.

In the preferred scheme, the bearing platform includes bottom plate and fixed block, and the upper portion of bottom plate is equipped with a plurality of counter bores along circumference, is equipped with the slide in the counter bore, and the bracing piece includes round bar and induction column, and induction column's external diameter and counter bore internal diameter are equal, and the outside of bearing platform has locking component through the screw connection, and locking component is used for carrying out the locking to induction column.

In the preferred scheme, the locking subassembly includes connecting plate and tapered end, and the connecting plate passes through the screw and is connected with the fixed block, and tapered end one side is equipped with the guide bar, and the guide bar wears to establish on the lock, and the cover is equipped with the spring on the guide bar, and the guide bar passes through the nut to be connected with the connecting plate, and induction column upside and downside are equipped with first inclined plane and second inclined plane respectively, and the upside and the downside of tapered end are equipped with third inclined plane and fourth inclined plane respectively, and second inclined plane and third inclined plane cooperate, first inclined plane and fourth inclined plane cooperate.

In the preferred scheme, two round bars of homonymy are connected through the synchronizing plate, and the synchronizing plate top is equipped with the screw rod, and the screw rod passes through nut and straight tube to be connected, and the both sides of bearing platform are equipped with the fifth inclined plane respectively, and the middle part of connecting plate is equipped with first through-hole, and first through-hole both sides are equipped with the second through-hole, and the slide both sides are equipped with the screw hole, and the screw wears to establish at second through-hole and threaded hole, and the guide bar wears to establish in first through-hole.

The utility model has the beneficial effects that the air in the first siphon pipe group or the second siphon pipe group can be better discharged in a short time through the single-valve speed control assembly, so that a vacuum environment is rapidly formed, the siphon pipe group has a water absorption function rapidly on the premise of saving resources, the high-pressure water control valve adopts a three-position three-way electromagnetic valve, the direction of water flow can be changed, high-pressure water is blocked from entering the single-valve speed control assembly in a daily state, and the second siphon pipe group bearing the water inlet function continuously works under the action of the gravity exhaust assembly at the moment, so that the normal operation of the filter tank is ensured. When the siphon pipe group is electrified, water flow can be selected to enter the siphon pipe group single-valve speed control component with different functions, so that the siphon pipe group with the corresponding function has the water absorption function quickly, namely, the whole operation rule of the filter tank can be controlled by the other components in a quick linkage way through the high-pressure water control valve, the operation is convenient and fast, and the effect is good. The first siphon pipe group and the second siphon pipe group adopt the detachable structural design, can guarantee the high efficiency when following maintenance, avoid when certain position appear after damaged inconvenient and the high cost problem when needing whole change, and the locking subassembly that sets up can be for the installation of first siphon pipe group and second siphon pipe group is convenient, excellent in use effect.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model;

FIG. 3 is a schematic view of a straight pipe installation structure of a bent pipe of the present utility model in a first state;

FIG. 4 is a schematic top view of FIG. 3;

FIG. 5 is a schematic front view of FIG. 3;

FIG. 6 is a schematic view of a bent pipe mounting straight pipe structure in a second state;

FIG. 7 is a schematic diagram of the explosive structure of FIG. 3;

FIG. 8 is an enlarged schematic view at A of FIG. 7;

FIG. 9 is a schematic diagram of the explosive structure of FIG. 3 II;

FIG. 10 is a schematic view of the straight tube mounting structure of FIG. 9;

FIG. 11 is an enlarged schematic view at B of FIG. 10;

FIG. 12 is a schematic view of the load bearing table mounting support bar and locking assembly of FIG. 7;

FIG. 13 is an enlarged schematic view at C of FIG. 12;

fig. 14 is an enlarged schematic view at D of fig. 12.

In the figure, a first siphon group 1, a single valve speed control assembly 2, a high-pressure water control valve 201, a high-pressure water inlet pipe 202, a water injector 203, a quick water discharge pipe 204, a first air suction pipe 205, a water seal base 3, a filter tank 4, a filter operation layer 401, a backwash layer 402, a water inlet channel 5, a gravity air discharge assembly 6, a gravity air discharge control valve 601, a water discharge port 602, a second air suction pipe 603, an air inlet pipe group 7, an air discharge pipe 701, a ball valve 702, a second siphon group 8, a bent pipe 9, a straight pipe 10, a supporting rod 11, a round rod 1101, a sensing column 1102, a first inclined surface 1103, a second inclined surface 1104, a synchronous plate 1105, a screw 1106, a bearing table 12, a bottom plate 1201, a fixed block 1202, a fifth inclined surface 1203, a counter bore 1204, a slide 1205, a threaded hole 1206, a sealing ring 13, a nut 14, a screw 15, a first sealing plate 16, a first concave surface 1601, a first counter-position table 1602, a first counter position 1603, a second sealing plate 17, a second concave surface 1701, a second counter position table 1702, a second counter position 3, a locking assembly 18, a connecting plate 1801, a connecting plate 1803, a guide 1803, a first inclined surface 1806, a fourth inclined surface 1807, and a fourth inclined surface 1708.

Detailed Description

As shown in fig. 1-2, a single-valve linkage speed control siphon system for a filter tank comprises a first siphon pipe group 1 and a second siphon pipe group 8, wherein the filter tank 4 comprises a filter operation layer 401 and a back flushing layer 402, water seal bases 3 are respectively arranged on the inner side and the outer side of the filter tank 4, the first siphon pipe group 1 is spanned on the filter tank 4, one side of the first siphon pipe group 1 is positioned in the back flushing layer 402, the other side of the first siphon pipe group 1 is arranged in the water seal base 3 on the outer side of the filter tank 4, the second siphon pipe group 8 is spanned between the water seal bases 3 on the inner side of the filter tank 4 and a water inlet channel 5, the first siphon pipe group 1 is used for back flushing sewage in the back flushing layer 402, the second siphon pipe group 8 is used for supplementing water for the filter operation layer 401, air inlet pipe groups 7 are respectively arranged on the tops of the first siphon pipe group 1 and the second siphon pipe group 8, and the two air inlet pipe groups 7 are connected through the single-valve speed control assembly 2. The bottom openings of the first siphon pipe group 1 and the second siphon pipe group 8 are respectively provided with an effective space which is not lower than 5cm with the bottoms of the water seal base 3, the filter tank 4 and the water inlet channel 5, so that normal water absorption and water inlet can be ensured, one side opening connected with the water seal base 3 is always ensured to be in a submerged state, a sealing effect is formed on the opening through water, and the first siphon pipe group 1 and the second siphon pipe group 8 are mutually matched to realize water inlet and outlet updating control in the filter tank 4.

In the preferred scheme, the single valve speed control assembly 2 comprises a high-pressure water control valve 201, a high-pressure water inlet pipe 202 is arranged on one side of the high-pressure water control valve 201, two speed drain pipes 204 are arranged on the other side of the high-pressure water control valve 201, the two speed drain pipes 204 are opposite to the filter tank 4, the bottom of the speed drain pipe 204 close to one side of the second siphon pipe group 8 is located in a filter operation layer 401, the bottom of the speed drain pipe 204 close to one side of the first siphon pipe group 1 is higher than the highest water storage level of the filter tank 4, the air inlet pipe group 7 comprises an exhaust pipe 701 and a ball valve 702 arranged on the exhaust pipe 701, a water injector 203 is arranged on the speed drain pipe 204, and the water injector 203 is communicated with the exhaust pipe 701 through a first air suction pipe 205. The water jet 203 can increase the speed and pressure of the water flow, thereby ensuring high efficiency of the two siphon systems and saving more time. When the high-pressure water passes through the water jet 203, negative pressure is generated inside the siphon group, so that air inside the siphon group is pumped out by the water jet air suction pipe 205 and discharged along with water flow, the higher the high-pressure water pressure is, the faster the air suction speed is, the shorter the time for forming an internal vacuum environment is, and the effect of quickly controlling the siphon group to enter a water suction state is realized through the speed control device 2.

In the preferred scheme, the gravity exhaust assembly 6 is further arranged in the water inlet channel 5, the gravity exhaust assembly 6 comprises a water outlet 602, a gravity exhaust control valve 601 is arranged on one side of the water outlet 602, the water outlet 602 is connected with an air inlet pipe group 7 on a second air suction pipe 603 and a second siphon pipe group 8, and the bottom of the gravity exhaust control valve 601 is arranged opposite to the filter tank 4.

The gravity exhaust assembly 6 is installed in the water inlet channel 5 of the filter tank, the main pipe body is located at the water outlet 602, therefore, the main pipe body water inlet is vertically downwards inserted into the water inlet channel 5, the other end of the gravity outlet 602 passes through the water inlet channel 5 and vertically opens into the filter tank 4, an air suction pipe 603 smaller than the diameter of the main pipe body is installed at a position with the outlet end not lower than 10cm away from the top end of the gravity exhaust assembly 6 and connected with the air exhaust pipe 701, the water level in the production period by-pass canal rises to submerge the top of the gravity exhaust assembly 6, so that sufficient water body fills the whole pipe body from the pipe opening entering device, finally flows into the filter tank through the gravity outlet 602, the gravity exhaust control valve is in an open state in an operating state, when the water body enters the assembly when the water inlet channel 5 stores water, and flows into the filter tank 4 from the normal pressure water outlet 602 through gravity flow, after the water inlet channel 5 exceeds the top end of the gravity exhaust assembly, the water body fills the pipe body to form negative pressure in the gravity exhaust assembly, the second siphon air in the siphon pipe set 8 is sucked out through the air suction pipe 603, the second siphon set 8 enters the vacuum environment, the water absorption function is started, and the water body flows into the filter tank 3 from the water seal base 5 through the second siphon set 8. When the filter tank 4 stops running or the water amount is insufficient, no water in the water inlet channel 5 enters the gravity exhaust assembly 6, and air enters the second siphon group 8 from the normal pressure water outlet 602 to stop water absorption. When maintenance is required, the gravity exhaust control valve 601 is closed to block water flow, and air enters the second siphon group 8 from the normal pressure water outlet 602 to stop water absorption. Except maintenance, the gravity exhaust assembly 6 runs automatically through waterpower in the whole process, and manual operation is not needed.

In the preferred scheme, as shown in fig. 3-7, a bearing table 12 is arranged in the water seal base 3, support rods 11 are arranged at the bottoms of the first siphon group 1 and the second siphon group 8, the support rods 11 are clamped with the bearing table 12, and the bearing table 12 is connected with the support rods 11 to form a water flow channel. From this structure to make whole ann tear open conveniently, be convenient for later stage maintain.

In the preferred scheme, the first siphon group 1 and the second siphon group 8 have the same structure, the first siphon group 1 and the second siphon group 8 have the structure that the first siphon group 1 and the second siphon group 8 comprise bent pipes 9, two sides of the bent pipes 9 are provided with straight pipes 10 in parallel, the bent pipes 9 are connected with the straight pipes 10 through nuts 14 and screws 15, and supporting rods 11 are arranged on the lower sides of the straight pipes 10. With the structure, the straight pipe 10 or the bent pipe 9 can be flexibly changed, so that the use cost is improved, and the replacement is convenient.

In a preferred embodiment, as shown in fig. 9-11, two first sealing plates 16 are symmetrically arranged at the lower part of the bent pipe 9, a second sealing plate 17 and a first sealing plate 16 are respectively arranged at the upper side and the lower side of the straight pipe 10, a first sinking groove 1603 and a second sinking groove 1703 are respectively arranged at the middle parts of the first sealing plate 16 and the second sealing plate 17, the sealing ring 13 is positioned in the first sinking groove 1603 and the second sinking groove 1703, and the first sealing plate 16 and the second sealing plate 17 are connected with the screw 15 through a nut 14. With this structure, the first sealing plate 16 and the second sealing plate 17 are mutually matched, and under the matching of the sealing ring 13, a stable sealing retaining wall can be formed between the first sealing plate and the second sealing plate, so that the air tightness of the inside of the siphon tank group is ensured.

In a preferred embodiment, the first sealing plate 16 and the second sealing plate 17 include a first concave-convex surface 1601 and a second concave-convex surface 1701, respectively, the first concave-convex surface 1601 and the second concave-convex surface 1701 are bonded, a first alignment stage 1602 and a second alignment stage 1702 are provided at the middle portions of the first concave-convex surface 1601 and the second concave-convex surface 1701, respectively, and a first sink 1603 and a second sink 1703 are provided on the first alignment stage 1602 and the second alignment stage 1702, respectively. With this structure, the cross sections of the first sealing plate 1601 and the second concave-convex surface 1701 are wavy, the first sealing plate 1601 and the second concave-convex surface 1701 are matched with each other, the contact area of the first sealing plate 1601 and the second concave-convex surface 1701 is greatly increased, and the overall sealing effect is better.

In a preferred embodiment, as shown in fig. 8, the bearing table 12 comprises a bottom plate 1201 and a fixing block 1202, a plurality of counter-bores 1204 are arranged on the upper portion of the bottom plate 1201 along the circumferential direction, a slide 1205 is arranged in the counter-bores 1204, the supporting rod 11 comprises a round rod 1101 and a sensing column 1102, the outer diameter of the sensing column 1102 is equal to the inner diameter of the counter-bores 1204, a locking assembly 18 is connected to the outer side of the bearing table 12 through screws 15, and the locking assembly 18 is used for locking the sensing column 1102. With the structure, the whole assembly, disassembly and maintenance are convenient, and the whole assembly can be taken out or put down without external tools when the device is used.

As shown in fig. 12-14, in a preferred embodiment, the locking assembly 18 includes a connecting plate 1801 and a locking head 1802, the connecting plate 1801 is connected with the fixing block 1202 through a screw 15, a guide rod 1803 is disposed on one side of the locking head 1802, the guide rod 1803 is penetratingly disposed on the locking head 1802, a spring 1804 is sleeved on the guide rod 1803, the guide rod 1803 is connected with the connecting plate 1801 through a nut 14, a first inclined plane 1103 and a second inclined plane 1104 are disposed on the upper side and the lower side of the sensing column 1102, a third inclined plane 1807 is disposed on the upper side and the lower side of the locking head 1802 and is matched with a fourth inclined plane 1808, the second inclined plane 1104 is matched with the third inclined plane 1807, and the first inclined plane 1103 is matched with the fourth inclined plane 1808. With this structure, when the induction column 1102 moves downwards into the counter bore 1204, first the second inclined plane 1104 and the third inclined plane 1807 are matched, the induction column 1102 presses the lock 1802, then the lock 1802 is in the stepping position, the induction column 1102 continues to move downwards, after the bottom surface is attached into the counter bore 1204, the lock 1802 resets under the action of the spring 1804, the fourth inclined plane 1807 is attached to the first inclined plane 1103, when the support rod 11 needs to be taken out, the support columns 11 and the bearing table 12 are mutually matched, the stability of the elbow 9 and the straight pipe 10 is guaranteed, the elbow 9 and the straight pipe 10 can be stably fixed on the bearing table 12 due to the fact that the dead weights of the elbow 9 and the straight pipe 10 are large, when the elbow is required to be taken out, the connection state between the elbow 9 and the straight pipe 10 can be released in sections at different positions, meanwhile, a wood rod penetrates from the lower part of the elbow 9, then the elbow is supported, the straight pipe 10 on the bearing table 12 is removed, when the lowest straight pipe 10 is removed, at the moment, the third inclined plane 1103 is lifted upwards, the first inclined plane 1807 is pushed to compress the lock 1802 until the stepping position is taken out, and the elbow 9 is ingenious, and the use is convenient.

In the preferred scheme, two round bars 1101 on the same side are connected through a synchronous plate 1105, the top of the synchronous plate 1105 is provided with a screw 1106, the screw 1106 is connected with a straight pipe 10 through a nut 14, two sides of a bearing table 12 are respectively provided with a fifth inclined plane 1203, the middle part of a connecting plate 1801 is provided with a first through hole 1805, two sides of the first through hole 1805 are provided with second through holes 1806, two sides of a slide 1205 are provided with threaded holes 1206, a screw 15 is arranged in the second through holes 1806 and the threaded holes 1206 in a penetrating manner, and a guide rod 1803 is arranged in the first through hole 1805 in a penetrating manner. With the structure, the lock is simple to manufacture and good in use effect, one end of the lock 1802 is always located in the counter bore 1204 through the spring 1804, and the functions of avoiding and locking are completed through cooperation with the support rod 11.

Working principle:

Under the normal operation of the filtering tank 4, the inside of the second siphon group 8 which bears the water inlet function continuously keeps the vacuum environment under the action of the gravity exhaust component 6, so that the water body to be treated in the filtering tank water inlet channel 5 continuously enters the filtering tank 4. When the operation period is reached and the back flushing operation needs to be carried out on the filter tank 4, only the high-pressure water control valve 201 is required to be opened, so that the high-pressure water enters the single-valve speed control assembly 2 matched with the first siphon pipe group 1 which bears the water drainage function, when the high-pressure water passes through the speed control device 2, the air in the first siphon pipe group 1 is brought out, the inside of the first siphon pipe group is quickly formed into a vacuum environment to start water absorption, the first siphon pipe group 1 sucks out a large amount of water and back flushing wastewater in the filter tank 4, the liquid level of the filter tank 4 is positioned in the back flushing interval 402 of the filter tank and continuously keeps the back flushing state, at the moment, the mouth of the pipe of the quick drain pipe 204 of the single-valve speed control assembly 2 matched with the second siphon pipe group 8 which bears the water inlet function leaks out of the water surface, and a large amount of air enters the water inlet function of the pause siphon pipe group from the moment to save water waste. After the back flushing is finished, the high-pressure water control valve 201 is only required to be closed, and air enters the single-valve speed control assembly 2 matched with the first siphon group 1 for carrying out the drainage function, so that the drainage function of the siphon group is stopped. When the water level naturally rises, or water is introduced into the second siphon group 8 with the water inlet function through the high-pressure water control valve 201 and then is recovered to be fed through the speed control device 2, the pipe orifice of the speed drain pipe 204 is submerged in the water again to form a seal, the second siphon group 8 is recovered to be in an initial continuous water inlet state through the gravity exhaust device 6, and the filter tank is recovered to be in normal operation again. Compared with the siphon system which at least needs 3 valves for controlling the filter tank in the past, the siphon system realizes the function of quickly controlling the running state by linking with other devices through one high-pressure water control valve 201.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (10)

1. A single-valve linkage speed control siphon system for a filter tank is characterized by comprising a first siphon pipe group (1) and a second siphon pipe group (8), wherein the filter tank (4) comprises a filter operation layer (401) and a backwash layer (402), water seal bases (3) are respectively arranged on the inner side and the outer side of the filter tank (4), the first siphon pipe group (1) is spanned on the filter tank (4), one side of the first siphon pipe group (1) is positioned in the backwash layer (402), the other side of the first siphon pipe group (1) is arranged in the water seal bases (3) on the outer side of the filter tank (4), the second siphon pipe group (8) is spanned between the water seal bases (3) on the inner side of the filter tank (4) and a water inlet channel (5), the first siphon pipe group (1) is used for backwashing and discharging sewage in the backwash layer (402), the second siphon pipe group (8) is used for supplementing water to the filter operation layer (401), air inlet pipe groups (7) are respectively arranged on the tops of the first siphon pipe group (1) and the second siphon pipe group (8), and two air inlet pipe groups (7) are connected through a single-valve (2).

2. The single-valve linkage speed control siphon system for a filter tank according to claim 1, wherein the single-valve speed control assembly (2) comprises a high-pressure water control valve (201), a high-pressure water inlet pipe (202) is arranged on one side of the high-pressure water control valve (201), two speed water discharge pipes (204) are arranged on the other side of the high-pressure water control valve (201), the two speed water discharge pipes (204) are opposite to the filter tank (4), the bottom of the speed water discharge pipe (204) close to one side of the second siphon pipe group (8) is located in a filter operation layer (401), the bottom of the speed water discharge pipe (204) close to one side of the first siphon pipe group (1) is higher than the highest water storage level of the filter tank (4), the air inlet pipe group (7) comprises an exhaust pipe (701) and a ball valve (702) arranged on the exhaust pipe (701), and a water injector (203) is arranged on the speed water injector (203) and is communicated with the exhaust pipe (701) through a first air suction pipe (205).

3. The single-valve linkage speed control siphon system for the filter tank according to claim 1, wherein the gravity exhaust assembly (6) is further arranged in the water inlet channel (5), the gravity exhaust assembly (6) comprises a water outlet (602), one side of the water outlet (602) is provided with a gravity exhaust control valve (601), the water outlet (602) is connected with an air inlet pipe group (7) on the second siphon pipe group (8) through a second air suction pipe (603), and the bottom of the gravity exhaust control valve (601) is opposite to the filter tank (4).

4. The single-valve linkage speed control siphon system for the filter tank of claim 1, wherein a bearing table (12) is arranged in the water seal base (3), support rods (11) are arranged at the bottoms of the first siphon group (1) and the second siphon group (8), the support rods (11) are clamped with the bearing table (12), and the bearing table (12) is connected with the support rods (11) to form a water flow channel.

5. The single-valve linkage speed control siphon system for the filter tank of claim 4, wherein the first siphon group (1) and the second siphon group (8) are identical in structure, the first siphon group (1) and the second siphon group (8) are composed of bent pipes (9), straight pipes (10) are arranged on two sides of each bent pipe (9) in parallel, the bent pipes (9) are connected with the straight pipes (10) through nuts (14) and screws (15), and supporting rods (11) are arranged on the lower sides of the straight pipes (10).

6. The single-valve linkage speed control siphon system for a filter tank according to claim 5, wherein two first sealing plates (16) are symmetrically arranged at the lower part of the bent pipe (9), a second sealing plate (17) and a first sealing plate (16) are respectively arranged at the upper side and the lower side of the straight pipe (10), a first sinking groove (1603) and a second sinking groove (1703) are respectively arranged at the middle parts of the first sealing plate (16) and the second sealing plate (17), the sealing ring (13) is positioned in the first sinking groove (1603) and the second sinking groove (1703), and the first sealing plate (16) and the second sealing plate (17) are connected with a screw (15) through nuts (14).

7. The single-valve linkage speed control siphon system for a filter tank according to claim 6, wherein the first sealing plate (16) and the second sealing plate (17) respectively comprise a first concave-convex surface (1601) and a second concave-convex surface (1701), the first concave-convex surface (1601) and the second concave-convex surface (1701) are attached, a first alignment table (1602) and a second alignment table (1702) are respectively arranged in the middle of the first concave-convex surface (1601) and the second concave-convex surface (1701), and the first sink groove (1603) and the second sink groove (1703) are respectively arranged on the first alignment table (1602) and the second alignment table (1702).

8. The single-valve linkage speed control siphon system for a filter tank, as set forth in claim 4, wherein the bearing table (12) comprises a bottom plate (1201) and a fixed block (1202), a plurality of counter bores (1204) are circumferentially arranged at the upper part of the bottom plate (1201), a slide way (1205) is arranged in the counter bores (1204), the support rod (11) comprises a round rod (1101) and a sensing column (1102), the outer diameter of the sensing column (1102) is equal to the inner diameter of the counter bores (1204), a locking assembly (18) is connected to the outer side of the bearing table (12) through a screw (15), and the locking assembly (18) is used for locking the sensing column (1102).

9. The single-valve linkage speed control siphon system for a filter tank according to claim 8, wherein the locking component (18) comprises a connecting plate (1801) and a locking head (1802), the connecting plate (1801) is connected with the fixed block (1202) through a screw (15), a guide rod (1803) is arranged on one side of the locking head (1802), the guide rod (1803) is arranged on the locking head (1802) in a penetrating mode, a spring (1804) is sleeved on the guide rod (1803), the guide rod (1803) is connected with the connecting plate (1801) through a nut (14), a first inclined plane (1103) and a second inclined plane (1104) are respectively arranged on the upper side and the lower side of the induction column (1102), a third inclined plane (1807) and a fourth inclined plane (1808) are respectively arranged on the upper side and the lower side of the locking head (1802), the second inclined plane (1104) is matched with the third inclined plane (1807), and the first inclined plane (1103) is matched with the fourth inclined plane (1808).

10. The single-valve linkage speed control siphon system for a filter tank according to claim 9, wherein two round rods (1101) on the same side are connected through a synchronous plate (1105), a screw (1106) is arranged at the top of the synchronous plate (1105), the screw (1106) is connected with a straight pipe (10) through a nut (14), fifth inclined planes (1203) are respectively arranged on two sides of a bearing table (12), a first through hole (1805) is arranged in the middle of a connecting plate (1801), second through holes (1806) are arranged on two sides of the first through hole (1805), threaded holes (1206) are arranged on two sides of a slide way (1205), screws (15) are arranged in the second through holes (1806) and the threaded holes (1206) in a penetrating mode, and guide rods (1803) are arranged in the first through holes (1805) in a penetrating mode.