Integrated scr reducing agent storage device

Abstract

The invention discloses an integrated SCR reducing agent storage device. The integrated SCR includes a liquid storage box and a metering injection unit, the liquid storage box is used for storing reducing agent, the metering injection unit is integrated with the liquid storage box, the metering injection unit at least includes a pump body, and a membrane pump, a filter, a metering valve and a control unit all arranged on the pump body, and the metering injection unit is integrally arranged on the liquid storage box to inject the reducing agent under the control of the control unit, thus avoiding the use of pipes for suction, reflux and heating and of relevant pipe joints and decreasing the leakage risk of the reducing agent, meanwhile, the metering injection device is compact in structure, good is pressure stabilizing effect and accurate in control for injection of the reducing agent.

1 . An integrated SCR reducing agent storage device, characterized in that: the integrated SCR reducing agent storage device includes a liquid storage box and a metering injection unit, the liquid storage box is used for storing reducing agent, and the metering injection unit is integrated with the liquid storage box. 
     
     
         2 . The integrated SCR reducing agent storage device according to  claim 1 , characterized in that: the integrated SCR reducing agent storage device further includes a transition plate, and the metering injection unit is integrated with the liquid storage box via the transition plate. 
     
     
         3 . The integrated SCR reducing agent storage device according to  claim 1 , characterized in that: the integrated SCR reducing agent storage device includes a water heating unit for heating the liquid storage box and the metering injection unit. 
     
     
         4 . The integrated SCR reducing agent storage device according to  claim 1 , characterized in that: the metering injection unit further includes a cover body, a pump body, a membrane pump, a filter and a metering valve, the cover body is buckled on the pump body, a closed space is formed between the cover body and the pump body, and the membrane pump is at least arranged in the closed space. 
     
     
         5 . The integrated SCR reducing agent storage device according to  claim 4 , characterized in that: the integrated SCR reducing agent storage device further includes a transition plate, and the metering injection unit is integrated with the liquid storage box via the transition plate. 
     
     
         6 . The integrated SCR reducing agent storage device according to  claim 5 , characterized in that: the metering injection unit includes a water heating unit, the water heating unit is downwards extended into the liquid storage box from the transition plate and is used for heating the liquid storage box and the metering injection unit. 
     
     
         7 . The integrated SCR reducing agent storage device according to  claim 6 , characterized in that: the water heating unit includes a water inlet pipe, a water outlet pipe, and a water circulation pipe arranged in the metering injection unit, the pipes are connected with each other, and the water inlet pipe and the water outlet pipe are extended into the liquid storage box. 
     
     
         8 . The integrated SCR reducing agent storage device according to  claim 7 , characterized in that: the water heating unit further includes a water inlet joint and a water outlet joint, the water inlet joint and the water outlet joint are arranged on the pump body, and the water inlet joint, the water inlet pipe, the water outlet pipe, the water circulation pipe and the water outlet joint are communicated with each other. 
     
     
         9 . The integrated SCR reducing agent storage device according to  claim 7 , characterized in that: the integrated SCR reducing agent storage device further includes a sensing component arranged in the liquid storage box, and the sensing components is composed of a liquid level sensor and a first temperature sensor. 
     
     
         10 . The integrated SCR reducing agent storage device according to  claim 7 , characterized in that: a heat insulating sleeve is further arranged on the water inlet pipe. 
     
     
         11 . The integrated SCR reducing agent storage device according to  claim 4 , characterized in that: a multi-section liquid flow pipe for circulation of the reducing agent is formed in the pump body. 
     
     
         12 . The integrated SCR reducing agent storage device according to  claim 4 , characterized in that: the metering injection unit further includes a first pressure sensor and a second pressure sensor arranged at the two ends of the metering valve. 
     
     
         13 . The integrated SCR reducing agent storage device according to  claim 4 , characterized in that: the metering injection unit further includes a control unit, and the control unit is electrically connected with the membrane pump and the metering valve to control injection of the reducing agent. 
     
     
         14 . The integrated SCR reducing agent storage device according to  claim 4 , characterized in that: the integrated SCR reducing agent storage device further includes a second temperature sensor arranged in the pump body.