The pump includes a pumping chamber within a sealed internal chamber, a pump inlet connected to the pumping chamber, a pump outlet connected to the pumping chamber, and a rotational pumping element configured to pump the corrosive fluid from the pump inlet to the pump outlet. The rotational pumping
The pump includes a pumping chamber within a sealed internal chamber, a pump inlet connected to the pumping chamber, a pump outlet connected to the pumping chamber, and a rotational pumping element configured to pump the corrosive fluid from the pump inlet to the pump outlet. The rotational pumping element is within the pumping chamber. The pump includes a drive shaft for driving the rotational pumping element. The drive shaft is completely within the sealed internal chamber. The drive shaft is configured for magnetically coupling to an external motor. A pump housing forms the sealed internal chamber. The rotational element, the pumping chamber, and the pump housing are formed from any one a conductive plastic, a non-conducting plastic with conducting particles, a semi-conducing ceramic, and combinations thereof. The drive shaft is formed from the semi-conducting ceramic.
대표청구항▼
1. A pump for pumping a corrosive fluid, wherein the pump comprises: a sealed internal chamber;a pumping chamber, wherein the pumping chamber is within the sealed internal chamber;a pump inlet connected to the pumping chamber;a pump outlet connected to the pumping chamber;a rotational pumping elemen
1. A pump for pumping a corrosive fluid, wherein the pump comprises: a sealed internal chamber;a pumping chamber, wherein the pumping chamber is within the sealed internal chamber;a pump inlet connected to the pumping chamber;a pump outlet connected to the pumping chamber;a rotational pumping element configured for pumping the corrosive fluid from the pump inlet to the pump outlet, wherein the rotational pumping element is within the pumping chamber;a drive shaft for driving the rotational pumping element, wherein the drive shaft is completely within the sealed internal chamber, wherein the drive shaft is configured for magnetically coupling to an external motor;a pump housing forming the sealed internal chamber, the pump housing including a containment can for forming a magnetic coupler receptacle within the sealed internal chamber,;a cylindrical internal magnetic coupler located within a magnet receptacle, the cylindrical internal magnetic coupler being connected to the drive shaft; andan external magnetic coupler located outside of the sealed internal chamber, the external magnetic coupler including a cylindrical cavity, at least a portion of the containment can being located within the cylindrical cavity, the external magnetic coupler being configured for rotationally coupling to the cylindrical internal magnetic coupler;wherein the rotational pumping element, the pumping chamber, and the pump housing are formed from an electrically non-conducting plastic with electrically conducting particles;wherein the drive shaft is formed from an electrically semi-conducting ceramic;wherein the electrically non-conducting plastic includes polytetrafluoroethylene;wherein the electrically conducting particles include graphite;wherein the electrically semi-conducting ceramic includes sintered silicon carbide;wherein the magnetic coupler receptacle is cylindrically shaped and includes a dome shaped end cap; andwherein any one of: the pump housing is formed by machining, the rotational pumping element is formed by machining, the pumping chamber is formed by machining, the sealed internal chamber is formed by machining, and combinations thereof. 2. The pump of claim 1, wherein the drive shaft is coupled to the rotational pumping element using a polygonal coupling. 3. The pump of claim 2, wherein the polygonal coupling is a pre-stressed coupling. 4. The pump of claim 1, wherein the pump is a gear pump, wherein the rotational pumping element is formed from a main gear and a secondary gear, wherein the main gear is coupled to the drive shaft. 5. The pump of claim 4, wherein the main gear and the secondary gear have helical teeth. 6. The pump of claim 4, wherein the rotational pumping element comprises a gear liner for forming the pumping chamber and for receiving the main gear and the secondary gear, wherein the pump housing is configured for receiving the gear liner. 7. The pump of claim 4, wherein the rotational pumping element comprises a gear liner for forming the pumping chamber and for receiving the main gear and the secondary gear, wherein the gear liner is machined into the pump housing. 8. The pump of claim 4, wherein pump further comprises a secondary shaft, wherein the secondary shaft is formed from the electrically semi-conducting ceramic, wherein the secondary shaft is located completely within the sealed internal chamber, wherein the secondary shaft is coupled to the secondary gear. 9. The pump of claim 8, wherein the pump further comprises at least one bearing for the drive shaft and the secondary shaft, wherein the at least one bearing is formed from the electrically non-conducting plastic with electrically conducting particles. 10. The pump of claim 1, wherein the pump is a sliding vane pump. 11. The pump of claim 10, wherein the sliding vane pump comprises a stator, wherein the rotational pumping element comprises a rotor coupled to the drive shaft, wherein the rotational pumping element further comprises three or more vanes for contacting the stator, and wherein the stator, the rotor, and the three or more vanes are formed from the electrically non-conducting plastic with conducting particles. 12. A biodiesel production system comprising: a reactor chamber for receiving oil;a methanol pump system for supplying methanol to the reactor chamber; anda catalyst pump system for supplying catalyst to the reactor chamber;wherein the catalyst pump system includes the pump of claim 1. 13. The pump of claim 1, wherein the pump is any one of a gear pump or a rotary vane pump.
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이 특허에 인용된 특허 (2)
Muscarella, Stephen B.; Pascoe, Philip T., Gear pump.
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