Disclosure of Invention
In order to solve the problems, the utility model provides a negative pressure sewage pumping structure of a sweeper, which has simple structure and convenient operation; meanwhile, a bottom valve and a water pump do not need to be installed at the end of the water inlet pipe, the damage rate of the water pump and the bottom valve is reduced, the situation that dirt is entangled or the water pump is blocked is avoided, the maintenance cost is reduced, and the service life is long.
In order to achieve the above object, the utility model adopts the following technical scheme: a negative-pressure sewage pumping structure of a sweeper comprises a water inlet pipe, a water outlet pipe, a vacuum sewage tank, a water replenishing tank, an air pumping device, a sewage draining pipe and a water pump, wherein a water inlet is formed in the upper part of the vacuum sewage tank, a water outlet is formed in the bottom of the vacuum sewage tank, the water inlet pipe is communicated with the water inlet, one end of the water outlet pipe is communicated with the water outlet in the bottom of the vacuum sewage tank, and the other end of the water outlet pipe is communicated with the sewage draining pipe; the vacuum sewage tank is characterized in that a water replenishing port and an air exhaust port are arranged at the top of the vacuum sewage tank, the water replenishing port is communicated with the water replenishing tank through a water replenishing valve, and the air exhaust port is connected with an air exhaust device through an exhaust valve.
Specifically, the air extraction device is an air extraction pump.
Specifically, the junction of the water inlet of outlet pipe and water pump is provided with sewage rose box, sewage rose box's one end is equipped with the dirty pipe of intaking with the outlet pipe intercommunication, and sewage rose box's the other end is equipped with the dirty pipe of drainage with the water inlet intercommunication of water pump, be equipped with the sewage filter layer in the sewage rose box.
Specifically, dirty pipe of intaking and drainage are made by PVC material or PU material or silica gel material.
Specifically, the sewage filtering layer comprises a shell powder layer, porous brick layers attached to the shell powder layer are arranged on two sides of the shell powder layer respectively, and a sewage filtering net sheet layer is arranged on the outer side wall of each porous brick layer.
Specifically, the water inlet sewage pipe is in threaded connection with the water outlet pipe, and the water discharge sewage pipe is in threaded connection with the water inlet of the water pump.
Specifically, a flow control valve is arranged on the water inlet sewage pipe.
Specifically, the drain sewer is provided with a check valve.
The beneficial effects of the utility model reside in that: when the sewage pumping structure is used for pumping sewage for the first time by using negative pressure, firstly, starting a water replenishing valve to make water in a water replenishing tank fully filled in a vacuum sewage tank through a water filling port; then the water replenishing valve is closed, the water pump is started, at the moment, the water pump firstly pumps water in the vacuum sewage tank through the water outlet pipe, the pressure intensity in the vacuum sewage tank is reduced along with the reduction of the water, and when the pressure intensity is smaller than the external air pressure, namely, external sewage can continuously enter the vacuum sewage tank through the water inlet pipe, the circulating water diversion is realized, the integral structure is simple, and the operation is convenient; meanwhile, a bottom valve and a water pump do not need to be installed at the end of the water inlet pipe, the damage rate of the water pump and the bottom valve is reduced, the situation that dirt is entangled or the water pump is blocked is avoided, the maintenance cost is reduced, and the service life is long.
Detailed Description
Referring to fig. 1-2, the present invention relates to a negative pressure sewage pumping structure of a sweeper, which includes a water inlet pipe 11, a water outlet pipe 110, a vacuum sewage tank 10, a water replenishing tank 13, an air extractor 14, a sewage drain pipe 117, and a water pump 116, wherein the upper portion of the vacuum sewage tank 10 is provided with a water inlet 12, the bottom of the vacuum sewage tank 10 is provided with a water outlet 19, the water inlet pipe 11 is communicated with the water inlet 12, one end of the water outlet pipe 110 is communicated with the bottom water outlet 19 of the vacuum sewage tank 10, the other end is communicated with the water inlet of the water pump 116, and the water outlet of the water pump 116; the top of the vacuum sewage tank 10 is provided with a water replenishing port 17 and an exhaust port 16, the water replenishing port 17 is communicated with the water replenishing tank 13 through a water replenishing valve 18, and the exhaust port 16 is connected with an air extraction device 14 through an exhaust valve 15.
When the sewage pumping structure is used for the first time, the water replenishing valve 18 is started firstly, so that water in the water replenishing tank 13 is filled into the vacuum sewage tank 10 through the water replenishing port 17; then the water replenishing valve 18 is closed, the water pump 116 is started, at this time, the water pump 116 firstly pumps the water in the vacuum sewage tank 10 through the water outlet pipe 110, and the pressure in the vacuum sewage tank 10 becomes smaller along with the reduction of the water, and when the pressure is smaller than the external air pressure, namely, the external sewage continuously enters the vacuum sewage tank 10 through the water inlet pipe 11, so that the water is circulated and drawn, and the operation is simple and convenient; simultaneously, a bottom valve and a water pump do not need to be installed at the end of the water inlet pipe 11, the damage rate of the water pump 116 and the bottom valve is reduced, the situation that dirt is entangled or the water pump is blocked is avoided, the maintenance cost is reduced, and the service life is long. Furthermore, during operation, the water inlet pipe 11 may possibly suck air, i.e. the negative pressure in the vacuum sewage tank 10 gradually decreases, so in this embodiment, the air outlet 1 is connected to the air pumping device 14 through the air outlet valve 15, and the air in the vacuum sewage tank 10 is exhausted by opening the air outlet valve 15 and starting the air pumping device 14, so as to ensure that the interior of the vacuum sewage tank 10 is in a negative pressure state.
Specifically, in the present embodiment, the air extracting device 14 is a micro air extracting pump, which can greatly reduce the occupied space while achieving the air exhausting effect.
Referring to fig. 1-2, specifically, a sewage filtering tank 113 is disposed at a connection position of the water outlet pipe 110 and the water inlet 12 of the water pump 116, a water inlet sewage pipe 111 communicated with the water outlet pipe 110 is disposed at one end of the sewage filtering tank 113, a sewage discharging pipe 115 communicated with the water inlet 12 of the water pump 116 is disposed at the other end of the sewage filtering tank 113, and a sewage filtering layer is disposed in the sewage filtering tank 113; wherein sewage passes through sewage rose box 113, and debris in the sewage filter layer can the filtration waste water among the sewage rose box 113 have avoided debris in the sewage to cause the jam to water pump 116 in follow-up, can reduce the damage to pipeline and equipment simultaneously, improve the reliability of system.
In this embodiment, the sewage filtering layer includes a shell powder layer 1133, porous brick layers 1132 attached to the shell powder layer 1133 are respectively disposed on two sides of the shell powder layer 1133, and a sewage filtering net sheet layer 1131 is disposed on an outer side wall of the porous brick layers 1132. Then, sewage passes through the sewage filtering tank 113, the sewage filtering net sheet layer 1131 in the sewage filtering tank 113 is used for filtering larger particles in the sewage, and the porous brick layer 1132 and the shell powder layer 1133 can be used for adsorbing small particles, so that the pipeline and equipment are prevented from being damaged, and the reliability of the system is improved; it should be noted, however, that the above-discussed sewage filter layer is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention; the user can also select different sewage filter layers according to actual production requirements to achieve different filtering effects.
Specifically, the dirty water inlet pipe 111 and the dirty water outlet pipe 115 are made of a PVC material, a PU material, or a silica gel material. In the embodiment, the sewage inlet pipe 111 and the sewage discharge pipe 115 are made of silica gel, and the water pipes made of silica gel can normally work even if large deformation occurs, so that the water pipes can adapt to different working environments and the occupied space can be reduced; meanwhile, in the present application, the materials of the sewage inlet pipe 111 and the sewage outlet pipe 115 discussed above are only described for the preferred embodiment of the present invention, and do not limit the scope of the present invention; the user can select the material of the sewage inlet pipe 111 and the sewage drain pipe 115 according to actual requirements.
Referring to fig. 1-2, in particular, a flow control valve 112 is disposed on the sewage inlet pipe 111. The flow control valve 112 is sequentially arranged on the sewage inlet pipe 111, sewage passes through the flow control valve 112, and the flow control valve 112 controls the inflow of the sewage, so that the reduction of the treatment efficiency of the water treatment system due to the over-fast flow is prevented;
Specifically, the drain sewer 115 is provided with a check valve 114. The sewage drainage pipe 115 is provided with a check valve 114, and the check valve 114 is used for controlling the flow direction of water flow, preventing the water flow from flowing backwards, influencing the work of the system and improving the stability of the system.
Referring to fig. 1-2, specifically, the dirty water inlet pipe 111 is connected to the water outlet pipe 110 by a screw thread, and the dirty water outlet pipe 115 is connected to the water inlet of the water pump 116 by a screw thread. Wherein, one end of the sewage filter tank 113 is connected with the water outlet pipe 110 by screw thread, and the other end is connected with the water inlet of the water pump 116 by screw thread; the sewage filtering tank 113 and the water outlet pipe 110 can be detachably connected, and the sewage filtering tank 113 and the water pump 116 are detachably connected; after the sewage filter is used for a period of time, the filtering effect of the sewage filtering layer may be weakened, so that a user can realize the disassembly of the sewage inlet pipe 111 and the water outlet pipe 110 by rotating the sewage inlet pipe 111, and simultaneously realize the disassembly of the sewage discharge pipe 115 and the water inlet of the water pump 116 by rotating the sewage discharge pipe 115; the realization is dismantled whole sewage rose box 113 and is got off, and the one end screwed connection who is close to into water dirty pipe 111 in the sewage rose box 113 has the filter cover moreover, and the user can be through dismantling the filter cover then will be located the inside sewage filter layer of sewage rose box 113 and tear down clean or change, improves the filter effect. The filtered sewage is driven by the water pump 116 to be discharged from the sewage discharge pipe 117; in the embodiment, the sewage drain pipe 117 is connected to the clean water tank, so that the treated sewage can be reused.
The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.