TWM601485U - Leak-proof canned magnetic pump with back protective cover - Google Patents

Abstract

一種具後蓋護罩防漏的罐裝磁力泵，包含一定位座、一馬達單元、一後蓋護罩及一防漏元件。該馬達單元相對於該定位座產生定位，且包括一殼體、一定子及一轉子，該殼體具有一主筒部及一法蘭，該法蘭具有一環周緣， 該後蓋護罩具有一主體部及一延伸盤部，該延伸盤部與該法蘭氣密抵靠，該延伸盤部具有一外環緣，該外環緣的輪廓範圍大於該環周緣的輪廓範圍，該防漏元件安裝於該法蘭與該延伸盤部之間。利用該外環緣的輪廓範圍大於該環周緣的輪廓範圍，以及該防漏元件安裝於該法蘭與該延伸盤部之間的作用，可以延長該馬達單元的使用壽命。A leak-proof canned magnetic pump with a back cover includes a positioning seat, a motor unit, a back cover and a leak-proof element. The motor unit is positioned relative to the positioning base, and includes a housing, a stator, and a rotor. The housing has a main cylinder and a flange. The flange has a circumferential edge. The rear cover has a The main body portion and an extension disk portion, the extension disk portion abuts against the flange in an airtight manner, the extension disk portion has an outer ring edge whose contour range is greater than the contour range of the ring periphery, the leakage prevention element Installed between the flange and the extension plate. Utilizing the contour range of the outer ring edge greater than the contour range of the ring peripheral edge and the function of the leak-proof element being installed between the flange and the extension disc portion, the service life of the motor unit can be prolonged.

Description

具後蓋護罩防漏的罐裝磁力泵Leak-proof canned magnetic pump with back cover

本新型是有關於一種化學過濾機的泵，特別是指一種具後蓋護罩防漏的罐裝磁力泵。The new model relates to a pump for a chemical filter, in particular to a canned magnetic pump with a back cover to prevent leakage.

現有一種磁驅動泵浦(台灣證書號數第I424661號專利案)，包含有一前蓋、一支撐架、一葉輪、一後蓋、一內轉子、一外轉子、一固定軸與一拖架，該後蓋呈杯狀且為兩層殼體結構，並具有一以氟塑膠製成的後蓋內襯，以及一強化層。There is a magnetic drive pump (Taiwan Certificate No. I424661 Patent Case), which includes a front cover, a support frame, an impeller, a back cover, an inner rotor, an outer rotor, a fixed shaft and a trailer. The back cover is cup-shaped and has a two-layer shell structure, and has a back cover lining made of fluoroplastic and a strengthening layer.

雖然這種磁驅動泵浦利用該後蓋內襯與該強化層構成兩層殼體結構，但是，由於該強化層的端緣輪廓範圍小於該後蓋內襯的輪廓範圍，以致於當該後蓋內襯有裂損時，滲漏的化學藥液會沿著該後蓋內襯與該強化層之間的縫隙延流，且會由該強化層的端緣與該後蓋內襯抵接處滲漏至該外轉子，滲漏的化學藥液會腐蝕該外轉子，導致馬達損毀。Although this kind of magnetically driven pump uses the back cover lining and the strengthening layer to form a two-layer shell structure, the edge contour range of the strengthening layer is smaller than the contour range of the back cover lining, so that when the back cover When the cover lining is cracked, the leaked chemical liquid will spread along the gap between the back cover lining and the strengthening layer, and will abut the back cover lining from the edge of the strengthening layer The leaked chemical solution will corrode the outer rotor and cause damage to the motor.

因此，本新型之目的，即在提供一種可提升防滲漏效果的具後蓋護罩防漏的罐裝磁力泵。Therefore, the purpose of the present invention is to provide a leak-proof canned magnetic pump with a back cover that can improve the leak-proof effect.

於是，本新型具後蓋護罩防漏的罐裝磁力泵，包含一定位座、一馬達單元、一後蓋護罩及一防漏元件。該馬達單元相對於該定位座產生定位，且沿一軸線延伸，並包括一殼體、一套設於該殼體外部的定子，以及一安裝於該殼體內部的轉子，該殼體具有一供該轉子安裝且呈中空筒狀的主筒部，及一連接於該主筒部且垂直於該軸線設置的法蘭，該主筒部與該法蘭共同界定出一沿該軸線設置且呈單向開放的容置空間，該法蘭具有一圍繞該軸線所形成的環周緣，該轉子安裝於該容置空間中，該後蓋護罩具有一套設於該殼體與該定子之間且包覆於該主筒部外部的主體部，以及一連接於該主體部且垂直於該軸線設置的延伸盤部，該延伸盤部與該法蘭氣密抵靠，該延伸盤部具有一圍繞該軸線所形成的外環緣，該外環緣的輪廓範圍大於該環周緣的輪廓範圍，該防漏元件安裝於該法蘭與該延伸盤部之間。Therefore, the new type of canned magnetic pump with a rear cover protective cover leak-proof includes a positioning seat, a motor unit, a rear cover protective cover and a leak-proof element. The motor unit is positioned relative to the positioning base, extends along an axis, and includes a housing, a stator set outside the housing, and a rotor installed inside the housing, the housing having a The main cylinder part of the hollow cylinder for the rotor installation, and a flange connected to the main cylinder part and arranged perpendicular to the axis, the main cylinder part and the flange together define a hollow cylinder A one-way open accommodating space, the flange has a circumferential edge formed around the axis, the rotor is installed in the accommodating space, and the rear cover has a sleeve set between the housing and the stator And a main body part wrapped around the main cylinder part, and an extension disc part connected to the main part and arranged perpendicular to the axis, the extension disc part abuts against the flange in an airtight manner, the extension disc part has a The outer circumferential edge formed around the axis has a contour range larger than that of the circumferential edge of the ring, and the leak-proof element is installed between the flange and the extending disc portion.

本新型之功效在於：利用該外環緣的輪廓範圍大於該環周緣的輪廓範圍的作用，以及該防漏元件安裝於該法蘭與該延伸盤部之間，則可確保滲漏至該殼體與該後蓋護罩之間的化學藥液能有效被阻絕，且可避免對該定子產生腐蝕，可延長該馬達單元的使用壽命。The effect of the present invention is to use the effect that the contour range of the outer ring edge is larger than the contour range of the ring peripheral edge, and the leak-proof element is installed between the flange and the extension disc portion to ensure leakage to the shell The chemical liquid between the body and the rear cover shield can be effectively blocked, and corrosion of the stator can be avoided, and the service life of the motor unit can be prolonged.

參閱圖1與圖2，本新型具後蓋護罩防漏的罐裝磁力泵的一實施例，包含一基座10、一定位座20、一馬達單元30、一泵前蓋40、一後蓋護罩50、一防漏元件60，以及一密封環70。Referring to Figures 1 and 2, an embodiment of the new leak-proof canned magnetic pump with a rear cover cover includes a base 10, a positioning seat 20, a motor unit 30, a pump front cover 40, and a rear The cover shield 50, an anti-leakage element 60, and a sealing ring 70.

該基座10採用塑膠材質製成(本實施例可以選用具有耐酸鹼特性的工程塑膠材質製成，例如PP、GFRPP、PVDF、CFRETFE等)，並具有一圍繞一軸線L並形成環框狀的主盤件11、一沿該軸線L連接於該主盤件11的側罩件12，以及一鎖固於該側罩件12底部的支撐架13。該主盤件11具有一相交於該軸線L的側端面111，以及一由該側端面111凹設的環槽112，該密封環70裝設於該環槽112中。The base 10 is made of plastic material (this embodiment can be made of engineering plastic material with acid and alkali resistance, such as PP, GFRPP, PVDF, CFRETFE, etc.), and has a ring-shaped frame around an axis L The main plate 11, a side cover 12 connected to the main plate 11 along the axis L, and a support frame 13 locked to the bottom of the side cover 12. The main plate 11 has a side end surface 111 intersecting the axis L, and a ring groove 112 recessed from the side end surface 111, and the sealing ring 70 is installed in the ring groove 112.

該定位座20採用金屬材質製成中空筒狀，且對應於該側罩件12而嵌套安裝於該基座10內部。The positioning seat 20 is made of a metal material and made into a hollow cylindrical shape, and is nested and installed inside the base 10 corresponding to the side cover 12.

該馬達單元30包括一相對於該定位座20產生定位的殼體31、一套設於該殼體31與該基座10、該定位座20之間的定子32、一安裝於該殼體31內部的轉子33、一連接於該轉子33的葉輪34，以及一固定於該殼體31且用於支撐該轉子33的心軸35。該殼體31具有一供該轉子33安裝且呈中空筒狀的主筒部311，及一連接於該主筒部311且垂直於該軸線L設置的法蘭312，該主筒部311與該法蘭312共同界定出一沿該軸線L設置且呈單向開放的容置空間313，該法蘭312具有一圍繞該軸線L所形成的環周緣314、 一垂直相交於該環周緣314的盤端面315、一由該盤端面315凹設的階級槽316，該階級槽316具有一相鄰於該盤端面315的大徑部317，及一連通於該大徑部317的小徑部318，該大徑部317由一槽底面317’，以及一相交連接於該槽底面317’的槽周面317”共同構成，該槽底面317’凹設有一圍繞該軸線L的環溝319，該防漏元件60裝設於該環溝319中。The motor unit 30 includes a housing 31 that is positioned relative to the positioning base 20, a stator 32 set between the housing 31 and the base 10 and the positioning base 20, and a stator 32 mounted on the housing 31 The inner rotor 33, an impeller 34 connected to the rotor 33, and a spindle 35 fixed to the housing 31 and used for supporting the rotor 33. The housing 31 has a main cylindrical portion 311 in which the rotor 33 is installed and in a hollow cylindrical shape, and a flange 312 connected to the main cylindrical portion 311 and arranged perpendicular to the axis L. The main cylindrical portion 311 and the The flanges 312 jointly define a accommodating space 313 arranged along the axis L and open in one direction. The flange 312 has a circumferential edge 314 formed around the axis L, and a disk perpendicularly intersecting the circumferential edge 314 The end surface 315, a step groove 316 recessed by the disk end surface 315, the step groove 316 has a large diameter portion 317 adjacent to the disk end surface 315, and a small diameter portion 318 connected to the large diameter portion 317, The large-diameter portion 317 is composed of a groove bottom surface 317' and a groove peripheral surface 317" intersecting and connected to the groove bottom surface 317'. The groove bottom surface 317' is recessed with an annular groove 319 surrounding the axis L. The drain element 60 is installed in the annular groove 319.

該泵前蓋40利用多數螺絲41鎖固於該基座10的側端面111，且罩設於該葉輪34外部，並提供該葉輪34的軸向定位及提供該心軸35的支撐，該法蘭312受該泵前蓋40夾制而相對於該基座10產生定位。The pump front cover 40 is fixed to the side end surface 111 of the base 10 with a plurality of screws 41, and is covered outside the impeller 34, and provides axial positioning of the impeller 34 and support of the spindle 35. The flange 312 is clamped by the pump front cover 40 to be positioned relative to the base 10.

該後蓋護罩50可採用塑膠材質製成(本實施例可以選用具有耐酸鹼特性的工程塑膠材質製成，例如PP、GFRPP、PVDF、CFRETFE等)，並具有一套設於該殼體31與該定子32之間且包覆於該主筒部311外部的主體部51，以及一連接於該主體部51且垂直於該軸線L設置的延伸盤部52，延伸盤部52具有一套設於該大徑部317且抵靠於該槽底面317’的內環段521、一圍繞於該內環段521外部的外環段522、一銜接於該內環段521與該外環段522之間的轉折部523，以及一圍繞該軸線L且形成於該外環段522的外環緣524。該外環段522抵靠於該盤端面315，該轉折部523抵靠於該槽周面317”，且該外環緣524的輪廓範圍大於該環周緣314的輪廓範圍。該延伸盤部52透過該防漏元件60可與該法蘭312氣密抵靠，該延伸盤部52透過該密封環70可與該基座10的主盤件11氣密抵靠。The rear cover shield 50 can be made of plastic material (in this embodiment, it can be made of engineering plastic material with acid and alkali resistance, such as PP, GFRPP, PVDF, CFRETFE, etc.), and has a set in the housing 31 and the stator 32 and covering the main cylinder portion 311 outside the main body portion 51, and an extension disc portion 52 connected to the main body portion 51 and arranged perpendicular to the axis L, the extension disc portion 52 has a set An inner ring segment 521 disposed at the large diameter portion 317 and abutting the groove bottom surface 317', an outer ring segment 522 surrounding the outer ring segment 521, and an outer ring segment 522 connected to the inner ring segment 521 and the outer ring segment The turning portion 523 between 522 and an outer ring 524 surrounding the axis L and formed on the outer ring segment 522. The outer ring segment 522 abuts against the disc end surface 315, the turning portion 523 abuts against the groove peripheral surface 317", and the contour range of the outer ring 524 is larger than the contour range of the ring periphery 314. The extended disc portion 52 Through the leak-proof element 60, the flange 312 can be airtightly abutted, and the extension plate 52 can be airtightly abutted against the main plate 11 of the base 10 through the sealing ring 70.

為供進一步瞭解本新型各元件配合所產生的作用、運用技術手段，以及所預期達成之功效，茲再說明如下，相信當可由此而對本新型有更深入且具體之瞭解。In order to further understand the effects of the cooperation of the components of the present invention, the use of technical means, and the expected effects, I will explain as follows. I believe that we can have a deeper and specific understanding of the present invention from this.

再如圖1及圖2所示，當本新型具後蓋護罩防漏的罐裝磁力泵整體組裝完成時，該泵前蓋40利用該等螺絲41鎖固於該基座10的主盤件11時，該後蓋護罩50的延伸盤部52被夾制於該泵前蓋40與該主盤件11之間，同時，也使得該殼體31的法蘭312被夾制於該泵前蓋40與該延伸盤部52之間，如此一來，該馬達單元30的殼體31的法蘭312相對於該基座10、該定位座20產生定位，並利用該防漏元件60夾制於該法蘭312與該延伸盤件52之間，且該密封環70夾制於該延伸盤件52與該側端面111之間，可確保該泵前蓋40、該法蘭312、該該延伸盤件52，以及該基座10的接合處產生氣(水)密，並產生較佳的防滲漏效果。As shown in Figures 1 and 2, when the new canned magnetic pump with a rear cover and a leak-proof cover is assembled as a whole, the pump front cover 40 is locked to the main plate of the base 10 with the screws 41 11, the extension plate 52 of the rear cover shield 50 is clamped between the pump front cover 40 and the main plate 11, and at the same time, the flange 312 of the housing 31 is clamped on the Between the pump front cover 40 and the extension plate 52, as a result, the flange 312 of the housing 31 of the motor unit 30 is positioned relative to the base 10 and the positioning seat 20, and uses the leakage prevention element 60 It is clamped between the flange 312 and the extension disc 52, and the sealing ring 70 is clamped between the extension disc 52 and the side end surface 111 to ensure the pump front cover 40, the flange 312, The joint between the extension plate 52 and the base 10 is air (water) tight and has a better anti-leakage effect.

當罐裝磁力泵使用一段時間後，經常與化學藥液接觸的殼體31的主筒部311即使有產生裂損，且化學藥液滲漏至該殼體31與該後蓋護罩50之間，利用該後蓋護罩50的設置可防止化學藥液滲漏至該定子32，且也利用該防漏元件60裝設於該環溝319中，使得該延伸盤部52與該法蘭312之間保持氣(水)密，可以確保第一道防滲漏。When the canned magnetic pump is used for a period of time, even if the main cylinder portion 311 of the casing 31 that is often in contact with the chemical liquid is cracked, and the chemical liquid leaks between the casing 31 and the back cover 50 In between, the use of the rear cover shield 50 can prevent the chemical liquid from leaking to the stator 32, and the leak-proof element 60 is also used to install in the ring groove 319, so that the extension plate 52 and the flange Keep air (water) tight between the 312 to ensure the first leak-proof.

又利用該延伸盤部52的外環緣524的輪廓範圍大於該法蘭312的環周緣314的輪廓範圍而可產生第二道防滲漏作用，以及該延伸盤部52透過該密封環70可與該基座10的主盤件11氣密抵靠而形成第三道防滲漏的作用，即使第一道防滲漏結構失效，也可有效地防止化學藥液越過該延伸盤部52而滲漏至該定子32內部，因此，可以延長馬達單元30的使用壽命。Furthermore, the contour range of the outer circumferential edge 524 of the extension disc portion 52 is larger than the contour range of the peripheral edge 314 of the flange 312 to produce a second anti-leakage effect, and the extension disc portion 52 can pass through the sealing ring 70 Airtight abuts against the main plate 11 of the base 10 to form the third anti-leakage function. Even if the first anti-leakage structure fails, it can effectively prevent the chemical liquid from crossing the extension plate 52. Leakage into the stator 32, therefore, the service life of the motor unit 30 can be prolonged.

再者，利用該法蘭312的階級槽316與該延伸盤部52的內環段521、外環段522與轉折部523的多轉折結構互相配合，可以在該法蘭312與該延伸盤部52抵接處形成多道轉折的結構，也可產生阻漏效果。Furthermore, the step groove 316 of the flange 312 is matched with the multi-turn structure of the inner ring section 521, the outer ring section 522, and the turning portion 523 of the extension disk portion 52, so that the flange 312 and the extension disk portion The 52 abutment has a multi-turn structure, which can also produce a leakage prevention effect.

綜上所述，本新型具後蓋護罩防漏的罐裝磁力泵，整體結構簡單，製造組配容易，確實能達成本新型的目的。To sum up, the new canned magnetic pump with a rear cover and a leak-proof cover has a simple overall structure, easy manufacture and assembly, and can indeed achieve the purpose of new cost.

惟以上所述者，僅為本新型之實施例而已，當不能以此限定本新型實施之範圍，凡是依本新型申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本新型專利涵蓋之範圍內。However, the above-mentioned are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

10:基座 L:軸線 11:主盤件 111:側端面 112:環槽 12:側罩件 13:支撐架 20:定位座 30:馬達單元 31:殼體 311:主筒部 312:法蘭 313:容置空間 314:環周緣 315:盤端面 316:階級槽 317:大徑部 317’:槽底面 317”:槽周面 318:小徑部 319:環溝 32:定子 33:轉子 34:葉輪 35:心軸 40:泵前蓋 41:螺絲 50:後蓋護罩 51:主體部 52:延伸盤部 521:內環段 522:外環段 523:轉折部 524:外環緣 60:防漏元件 70:密封環10: Pedestal L: axis 11: Main disk 111: side end face 112: ring groove 12: Side cover 13: Support frame 20: positioning seat 30: Motor unit 31: Shell 311: main tube 312: Flange 313: housing space 314: Ring 315: Disc end face 316: Class Slot 317: Large Diameter 317’: the bottom of the groove 317": groove circumference 318: Small Diameter 319: ring groove 32: stator 33: Rotor 34: impeller 35: Mandrel 40: Pump front cover 41: Screw 50: Rear cover guard 51: main body 52: Extension plate 521: inner ring segment 522: Outer Ring 523: Turn 524: Outer Ring 60: Leakproof element 70: sealing ring

本新型之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中： 圖1是本新型具後蓋護罩防漏的罐裝磁力泵一實施例的一組合剖視圖；及 圖2是圖1的一局部放大剖視示意圖。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a combined cross-sectional view of an embodiment of the new canned magnetic pump with a rear cover to prevent leakage; and Fig. 2 is a partial enlarged cross-sectional view of Fig. 1.

10:基座 10: Pedestal

L:軸線 L: axis

11:主盤件 11: Main disk

12:側罩件 12: Side cover

13:支撐架 13: Support frame

20:定位座 20: positioning seat

30:馬達單元 30: Motor unit

31:殼體 31: Shell

311:主筒部 311: main tube

32:定子 32: stator

33:轉子 33: Rotor

34:葉輪 34: impeller

35:心軸 35: Mandrel

40:泵前蓋 40: Pump front cover

41:螺絲 41: Screw

50:後蓋護罩 50: Rear cover guard

51:主體部 51: main body

52:延伸盤部 52: Extension plate

312:法蘭 312: Flange

313:容置空間 313: housing space

60:防漏元件 60: Leakproof element

70:密封環 70: sealing ring

Claims (5)

一種具後蓋護罩防漏的罐裝磁力泵，包含： 一定位座； 一馬達單元，相對於該定位座產生定位，且沿一軸線延伸，並包括一殼體、一套設於該殼體外部的定子，以及一安裝於該殼體內部的轉子，該殼體具有一供該轉子安裝且呈中空筒狀的主筒部，及一連接於該主筒部且垂直於該軸線設置的法蘭，該主筒部與該法蘭共同界定出一沿該軸線設置且呈單向開放的容置空間，該法蘭具有一圍繞該軸線所形成的環周緣，該轉子安裝於該容置空間中； 一後蓋護罩，具有一套設於該殼體與該定子之間且包覆於該主筒部外部的主體部，以及一連接於該主體部且垂直於該軸線設置的延伸盤部，該延伸盤部與該法蘭氣密抵靠，該延伸盤部具有一圍繞該軸線所形成的外環緣，該外環緣的輪廓範圍大於該環周緣的輪廓範圍；及 一防漏元件，安裝於該法蘭與該延伸盤部之間。 A leak-proof canned magnetic pump with a back cover, including: A positioning seat; A motor unit is positioned relative to the positioning base and extends along an axis, and includes a housing, a stator set outside the housing, and a rotor installed inside the housing, the housing having A main cylinder for the rotor to be installed in the shape of a hollow cylinder, and a flange connected to the main cylinder and arranged perpendicular to the axis. The main cylinder and the flange jointly define a A accommodating space that is unidirectionally open, the flange has a circumferential edge formed around the axis, and the rotor is installed in the accommodating space; A rear cover shield having a main body part set between the casing and the stator and covering the outside of the main cylinder part, and an extension disc part connected to the main body part and arranged perpendicular to the axis, The extension disc portion abuts against the flange in an airtight manner, the extension disc portion has an outer circumferential edge formed around the axis, and the contour range of the outer circumferential edge is larger than the contour range of the circumferential edge of the ring; and An anti-leakage element is installed between the flange and the extension plate. 如請求項1所述的具後蓋護罩防漏的罐裝磁力泵，其中，該馬達單元的法蘭還具有一朝向該延伸盤部的盤端面、一由該盤端面凹設的階級槽，該階級槽具有一相鄰於該盤端面的大徑部，及一連通於該大徑部的小徑部，該大徑部由一槽底面，以及一相交連接於該槽底面的槽周面共同構成，該後蓋護罩的延伸盤部具有一套設於該大徑部且抵靠於該槽底面的內環段、一圍繞於該內環段外部的外環段，以及一銜接於該內環段與該外環段之間的轉折部，該外環段抵靠於該盤端面，該轉折部抵靠於該槽周面。The leak-proof canned magnetic pump with a rear cover as described in claim 1, wherein the flange of the motor unit further has a disk end surface facing the extended disk portion, and a step groove recessed from the disk end surface , The step groove has a large diameter portion adjacent to the end surface of the disc, and a small diameter portion connected to the large diameter portion, the large diameter portion is formed by a groove bottom surface and a groove circumference intersecting with the groove bottom surface The extended disc portion of the rear cover shield has an inner ring segment set on the large diameter portion and abutting against the bottom surface of the groove, an outer ring segment surrounding the outer ring segment, and a joint At the turning part between the inner ring segment and the outer ring segment, the outer ring segment abuts against the end surface of the disc, and the turning part abuts against the circumferential surface of the groove. 如請求項2所述的具後蓋護罩防漏的罐裝磁力泵，其中，該馬達單元的法蘭的槽底面凹設有一圍繞該軸線的環溝，該防漏元件裝設於該環溝中，使該法蘭與該延伸盤部之間保持氣密。The leak-proof canned magnetic pump with a back cover as described in claim 2, wherein the bottom surface of the groove of the flange of the motor unit is recessed with a ring groove around the axis, and the leak-proof element is installed on the ring In the groove, the flange and the extension disc are kept airtight. 如請求項3所述的具後蓋護罩防漏的罐裝磁力泵，還包含一套設於該固定座的基座，以及一設置於該基座與該延伸盤部之間的密封環。The leak-proof canned magnetic pump with a back cover as described in claim 3, further comprising a base set on the fixing base, and a sealing ring set between the base and the extension plate . 如請求項4所述的具後蓋護罩防漏的罐裝磁力泵，其中，該基座具有一圍繞該軸線呈環框狀的主盤件，以及一沿該軸線連接於該主盤件的側罩件，該主盤件具有一供該外環段抵靠的側端面，以及一由該側端面凹設的環槽，該密封環裝設於該環槽中，使該主盤件與該延伸盤部之間保持氣密。The leak-proof canned magnetic pump with a back cover as described in claim 4, wherein the base has a main disc member that is ring-shaped around the axis, and a main disc member connected to the main disc member along the axis The side cover member of the main disk member has a side end surface for the outer ring segment to abut, and a ring groove recessed from the side end surface, and the sealing ring is installed in the ring groove so that the main disk member Keep airtight with the extension plate.

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