Container type double-end-face mechanical seal

Abstract

The utility model relates to the technical field of pump sealing structures, and discloses a container type double-end-face mechanical seal which comprises a pump body and a mechanical seal assembly detachably connected to the pump body, a rotating shaft is arranged on the pump body in a rotating mode, the mechanical seal assembly is arranged on the rotating shaft in a sleeved mode, and the mechanical seal assembly comprises a rotating part and a fixing part which can rotate relatively. The rotating part and the rotating shaft are connected and rotate synchronously, the fixed part and the pump body are fixedly connected, the rotating part comprises a shaft sleeve, a movable ring and a movable ring transmission sleeve, the shaft sleeve fixedly sleeves the rotating shaft, the movable ring and the movable ring transmission sleeve fixedly sleeve the shaft sleeve, and the movable ring comprises a first movable ring and a second movable ring which are symmetrically distributed on the two sides of the movable ring transmission sleeve; the fixing part comprises a mechanical seal seat, a static ring and a static ring seat, and the mechanical seal seat, the static ring seat and the pump body are detachably and fixedly connected. According to the container type double-end-face mechanical seal, the mechanical seal assembly is convenient to disassemble and assemble, maintenance is convenient, and cost is low; and the first static ring is extruded to the first movable ring through the pressure of the oil liquid cavity, the sealing performance is improved, and operation is more reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump sealing structure technical field, specifically, relate to a set type double end face machine seal. BACKGROUND

[0002] The oil seal is a core component for realizing the sealing of the cam rotor pump, and the oil seal applied to the cam rotor pump is directly installed in the machine seal shell during installation, and then the dynamic ring is connected with the rotating shaft through other parts. In order to reduce the temperature of the contact surface between the dynamic ring and the static ring, some existing double-end-face machine seal structures of the cam rotor pump need to pour oil into the machine seal. When the oil is poured into the machine seal shell, a certain force is generated in the machine seal shell and acts on the contact surface between the static ring and the dynamic ring, which causes the sealing performance between the static ring and the dynamic ring to be poor. In addition, the sealing component structure of some existing double-end-face machine seals is complex, and it is not easy to disassemble and assemble, and the maintenance cost is high. SUMMARY

[0003] To solve at least one of the above problems, the utility model provides a set type double end face machine seal, which comprises: a pump body and a machine seal assembly detachably connected to the pump body, a rotating shaft is rotatably arranged on the pump body, the machine seal assembly is sleeved on the rotating shaft, the machine seal assembly comprises a rotating part and a fixed part which can rotate relative to each other, the rotating part is connected with the rotating shaft and rotates synchronously, the fixed part is fixedly connected with the pump body, the rotating part comprises a shaft sleeve, a dynamic ring and a dynamic ring transmission sleeve, the shaft sleeve is fixedly sleeved outside the rotating shaft, the dynamic ring and the dynamic ring transmission sleeve are both fixedly sleeved outside the shaft sleeve, the dynamic ring comprises a first dynamic ring and a second dynamic ring which are symmetrically distributed on both sides of the dynamic ring transmission sleeve, the fixed part comprises a machine seal seat, a static ring and a static ring seat, the machine seal seat, the static ring seat and the pump body are detachably fixedly connected, the static ring comprises a first static ring and a second static ring which are symmetrically distributed, an oil cavity communicating with oil is surrounded between the pump body and the static ring seat, one end of the first static ring is arranged in the oil cavity, and the other end of the first static ring abuts against one side of the first dynamic ring. The set type double end face machine seal is convenient to disassemble and assemble, maintenance is convenient and the cost is low. The first static ring is extruded onto the first dynamic ring by the pressure of the oil cavity, the sealing performance is improved, and the operation is more reliable.

[0004] Optionally, the dynamic ring transmission sleeve is slidably arranged in the axial direction of the shaft sleeve, and one end of the second static ring abuts against one side of the second dynamic ring away from the dynamic ring transmission sleeve for sealing.

[0005] Optionally, a first spring is arranged between the first static ring and the static ring seat, and an end of the first static ring is driven to abut on the first dynamic ring by the elastic force of the first spring; a second spring is arranged between the second static ring and the mechanical seal seat, and an end of the second static ring is driven to abut on the second dynamic ring by the elastic force of the second spring.

[0006] Optionally, a first flange is arranged on the first static ring, and the first spring is arranged between the first flange and the static ring seat; a second flange is arranged on the second static ring, and the second spring is arranged between the second flange and the mechanical seal seat, and the first spring and the second spring are both wave springs.

[0007] Optionally, first and second protrusions are symmetrically arranged on both sides of the dynamic ring transmission sleeve, a first clamping groove corresponding to the first protrusion is arranged on the first dynamic ring, and a second clamping groove corresponding to the second protrusion is arranged on the second dynamic ring.

[0008] Optionally, a first inclined surface is arranged on an end of the first static ring close to the first dynamic ring, and a second inclined surface is arranged on an end of the second static ring close to the second dynamic ring.

[0009] Optionally, an oil containing cavity is arranged in the pump body, a rotor is fixedly connected to the rotating shaft, the rotor is arranged in the oil containing cavity, and a gap is formed between the rotor and the pump body, and the oil containing cavity is in communication with the oil cavity through the gap.

[0010] Optionally, the mechanical seal seat, the static ring seat and the pump body are detachably fixed by a first bolt, a second bolt is connected between the rotating shaft and the shaft sleeve, the pump body comprises a first shell, a second shell and a third shell connected between the first shell and the second shell, and the first shell, the second shell and the third shell are fixed by a third bolt; a fourth bolt is connected between the dynamic ring transmission sleeve and the shaft sleeve, an oval limiting groove is arranged on the shaft sleeve, and one end of the fourth bolt penetrates through the dynamic ring transmission sleeve and falls into the limiting groove.

[0011] Optionally, a first sealing ring is arranged between the mechanical seal seat and the static ring seat, a second sealing ring is arranged between the static ring seat and the pump body, a third sealing ring is arranged between the first static ring and the static ring seat, a fourth sealing ring is arranged between the shaft sleeve and the rotating shaft, a fifth sealing ring is arranged between the first dynamic ring and the shaft sleeve, a sixth sealing ring is arranged between the second dynamic ring and the shaft sleeve, and a seventh sealing ring is arranged between the second static ring and the mechanical seal seat.

[0012] Optionally, the mechanical seal seat is provided with a flowing water cavity, the flowing water cavity is provided with a water inlet interface and a water outlet interface, the water inlet interface is connected with an external water inlet pipe, the water outlet interface is connected with an external water outlet pipe, the first movable ring and the first static ring have a first contact surface, the second movable ring and the second static ring have a second contact surface, and the first contact surface and the second contact surface are cooled by water in the flowing water cavity.

[0013] Compared with the prior art, the assembled double-end-face mechanical seal has the advantages that the mechanical seal assembly is convenient to disassemble and maintain, and low in cost; the first static ring is pressed onto the first movable ring by the pressure of the oil cavity, so that the sealing performance is improved, and the operation is more reliable; when the rotor in the pump body rotates, the hydraulic pressure in the oil cavity increases, a thrust is formed at the end of the first static ring, the extrusion force between the first static ring and the first movable ring is increased, the sealing performance between the first static ring and the first movable ring is improved, and the problem of liquid leakage is less likely to occur, so that the operation is more reliable; the extrusion force borne by the first movable ring can be transmitted to the second movable ring through the movable ring transmission sleeve, so that the extrusion force between the second movable ring and the second static ring is increased, the sealing performance between the second movable ring and the second static ring is improved, and the structure design is reasonable; the first spring provides an elastic force to the first static ring, so that a certain extrusion force always exists between the first static ring and the first movable ring, and the sealing performance between the first static ring and the first movable ring is guaranteed; the first spring and the second spring are wave springs, so that a greater elastic force is provided in a shorter compression stroke of the spring, and the structure is compact; the wave spring has the advantages of strong bearing capacity and strong shock absorption capacity; the first end of the first static ring close to the first movable ring is provided with a first inclined surface, the relative friction between the first static ring and the first movable ring causes the end surface of the first static ring close to the first movable ring to be thinned, and the first inclined surface can increase the contact surface between the first static ring and the first movable ring in this process, so that the sealing performance of the contact surface is improved; the first contact surface and the second contact surface are cooled by water in the flowing water cavity, and the wear of the first contact surface and the second contact surface is reduced after cooling, so that the service life is increased. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a perspective view of the assembled double-end-face mechanical seal of the utility model;

[0015] Figure 2 It is a sectional view of the assembled double-end-face mechanical seal of the utility model; Figure One ;

[0016] Figure 3 It is an enlarged view of A part in the utility model; Figure 2

[0017] Figure 4 It is a sectional view of the assembled double-end-face mechanical seal of the utility model; Figure Two ;

[0018] Figure 5 ​The utility model discloses a set type double end face mechanical seal first bolt part's structure diagram.

[0019] Figure 6 The utility model discloses a set type double end face mechanical seal dynamic ring transmission sleeve's structure diagram.

[0020] Figure 7 The utility model discloses a set type double end face mechanical seal shaft sleeve's structure diagram.

[0021] Figure 8 The utility model discloses a set type double end face mechanical seal first dynamic ring's structure diagram.

[0022] Figure 9 The utility model discloses a set type double end face mechanical seal third bolt part's structure diagram.

[0023] The corresponding component name of each reference numeral in the drawing is: 1 is pump body, 11 is first casing, 12 is second casing, 13 is third casing, 101 is oil cavity, 102 is cavity, 103 is gap, 2 is mechanical seal assembly, 3 is rotating shaft, 31 is rotor, 41 is shaft sleeve, 411 is limit slot, 42 is dynamic ring transmission sleeve, 421 is first protruding block, 422 is second protruding block, 43 is first dynamic ring, 431 is first clamping groove, 44 is second dynamic ring, 441 is second clamping groove, 50 is flowing water cavity, 51 is mechanical seal seat, 511 is water inlet, 512 is water outlet, 52 is static ring seat, 53 is first static ring, 531 is first flange, 532 is first inclined surface, 54 is second static ring, 541 is second flange, 542 is second inclined surface, 61 is first spring, 62 is second spring, 71 is first bolt, 72 is second bolt, 73 is third bolt, 74 is fourth bolt, 81 is first sealing ring, 82 is second sealing ring, 83 is third sealing ring, 84 is fourth sealing ring, 85 is fifth sealing ring, 86 is sixth sealing ring, 87 is seventh sealing ring, 91 is first contact surface, 92 is second contact surface. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below with reference to the drawings.

[0025] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower" and the like is based on the orientation or position relationship when the product is normally used.

[0026] The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one feature.

[0027] With reference to Figures 1-9 The utility model embodiment provides a kind of double-end face machine seal of set type, it include: pump body 1 and the machine seal component 2 of detachable connection on pump body 1, rotating shaft 3 is rotationally arranged on pump body 1, rotating shaft 3 one end connects external motor;Machine seal component 2 is set on rotating shaft 3, machine seal component 2 includes rotatable rotating part and fixed part, rotating part is connected with rotating shaft 3 and rotates synchronously, fixed part is fixedly connected with pump body 1, rotating part includes shaft sleeve 41, moving ring and moving ring transmission sleeve 42, shaft sleeve 41 is fixedly set on the outside of rotating shaft 3, moving ring and moving ring transmission sleeve 42 are all fixedly set on the outside of shaft sleeve 41, moving ring includes the first moving ring 43 and the second moving ring 44 of symmetrical distribution in moving ring transmission sleeve 42 two sides, fixed part includes machine seal seat 51, static ring and static ring seat 52, machine seal seat 51, static ring seat 52 and pump body 1 can be dismantled type fixed connection, static ring includes the first static ring 53 and the second static ring 54 of symmetrical distribution, oil chamber 101 that is communicated with oil is enclosed between pump body 1 and static ring seat 52, first static ring 53 one end is placed in oil chamber 101, first static ring 53 other end is abutted on one side of first moving ring 43, when the rotor in pump body rotates, the hydraulic pressure in oil chamber 101 increases, will form a thrust to the end of first static ring 53, to increase the extrusion pressure between first static ring 53 and first moving ring 200, to further promote the sealing property between first static ring 53 and first moving ring 200, not prone to the problem of liquid leakage, more reliable in operation;The double-end face machine seal of set type of the utility model, machine seal component is convenient to dismount, maintenance is convenient, and cost is low;First static ring is extruded to first moving ring using the pressure of oil chamber, promotes sealing property, more reliable in operation.

[0028] With reference to Figures 1-3, the dynamic ring transmission sleeve 42 is arranged in the axial direction of the shaft sleeve 41, one end of the second static ring 54 abuts against the side of the second dynamic ring 44 away from the dynamic ring transmission sleeve 42 to seal, the extrusion force received by the first dynamic ring can be transmitted to the second dynamic ring through the dynamic ring transmission sleeve 42, thereby increasing the extrusion force between the second dynamic ring and the second static ring, and further improving the sealing performance between the second dynamic ring and the second static ring, and the structural design is reasonable; the first spring 61 is arranged between the first static ring 53 and the static ring seat 52, one end of the first static ring 53 is driven to abut against the first dynamic ring 43 by the elastic force of the first spring 61, the second spring 62 is arranged between the second static ring 54 and the mechanical seal seat 51, one end of the second static ring 54 is driven to abut against the second dynamic ring 44 by the elastic force of the second spring 62, and the sealing performance is improved; the first static ring 53 is provided with the first flange 531, and the first spring 61 is arranged between the first flange 531 and the static ring seat 52; the second static ring 54 is provided with the second flange 541, and the second spring 62 is arranged between the second flange 541 and the mechanical seal seat 51, the first spring 61 and the second spring 62 are both wave springs, the first spring can provide an elastic force to the first static ring, so that a certain extrusion force always exists between the first static ring and the first dynamic ring, and the sealing performance between the first static ring and the first dynamic ring is guaranteed; the second spring can provide an elastic force to the second static ring, so that a certain extrusion force always exists between the second static ring and the second dynamic ring, and the sealing performance between the second static ring and the second dynamic ring is guaranteed; the first spring 61 and the second spring 62 adopt wave springs, so that a greater elastic force is obtained in a shorter compression stroke of the spring, and the structure is compact; the wave spring also has the advantages of strong bearing capacity and strong shock absorption capacity.

[0029] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 8 , the first protrusion 421 and the second protrusion 422 are symmetrically arranged on the two sides of the dynamic ring transmission sleeve 42, the first dynamic ring 43 is provided with the first clamping groove 431 corresponding to the first protrusion 421, and the second dynamic ring 44 is provided with the second clamping groove 441 corresponding to the second protrusion 422, so that the dynamic ring transmission sleeve 42 can drive the first dynamic ring and the second dynamic ring to rotate synchronously; the first end of the first static ring 53 close to the first dynamic ring 43 is provided with the first inclined surface 532, and the relative friction between the first static ring 53 and the first dynamic ring can cause the end surface of the first static ring 53 close to the first dynamic ring to be thinned, and the first inclined surface 532 can increase the contact surface of the first static ring 53 and the first dynamic ring in this process, thereby improving the sealing performance of the contact surface; the end of the second static ring 54 close to the second dynamic ring 44 is provided with the second inclined surface 542, and the relative friction between the second static ring and the second dynamic ring can cause the end surface of the second static ring close to the second dynamic ring to be thinned, and the second inclined surface can increase the contact surface of the second static ring and the second dynamic ring in this process, thereby improving the sealing performance of the contact surface.

[0030] Referring toFigure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 9 , the pump body 1 is provided with a cavity 102 containing oil, the pump body is provided with an oil inlet and an oil outlet communicated with the cavity 102, the rotating shaft 3 is fixedly connected with a rotor 31, the rotor 31 is a three-leaf rotor; the rotor 31 is placed in the cavity 102, and a gap 103 is formed between the rotor 31 and the pump body 1, and the cavity 102 is communicated with the oil cavity 101 through the gap 103; the mechanical seal base 51, the static ring seat 52 and the pump body 1 are detachably fixed by the first bolt 71, the rotating shaft 3 and the shaft sleeve 41 are connected by the second bolt 72, the pump body 1 comprises a first shell 11, a second shell 12 and a third shell 13 connected between the first shell 11 and the second shell 12, and the first shell 11, the second shell 12 and the third shell 13 are fixed by the third bolt 73; the fourth bolt 74 is connected between the dynamic ring transmission sleeve 42 and the shaft sleeve 41, which is convenient to disassemble and assemble, when the mechanical seal assembly is disassembled, the third bolt 73 is disassembled first, then the first bolt 71 and the second bolt 72 are disassembled, and the mechanical seal assembly can be disassembled, which is convenient to operate; the shaft sleeve 41 is provided with an oval limiting groove 411, the long axis of the oval extends in the axial direction of the shaft sleeve 41, one end of the fourth bolt 74 penetrates the dynamic ring transmission sleeve 42 and falls into the limiting groove 411, so that the shaft sleeve 41 and the dynamic ring transmission sleeve rotate synchronously, and the dynamic ring transmission sleeve can displace a certain distance in the axial direction of the shaft sleeve 41 to realize the transmission between the two dynamic rings; the first sealing ring 81 is arranged between the mechanical seal base 51 and the static ring seat 52, the second sealing ring 82 is arranged between the static ring seat 52 and the pump body 1, the third sealing ring 83 is arranged between the first static ring 53 and the static ring seat 52, the fourth sealing ring 84 is arranged between the shaft sleeve 41 and the rotating shaft 3, the fifth sealing ring 85 is arranged between the first dynamic ring 43 and the shaft sleeve 41, the sixth sealing ring 86 is arranged between the second dynamic ring 44 and the shaft sleeve 41, and the seventh sealing ring 87 is arranged between the second static ring 54 and the mechanical seal base 51, so that the sealing performance is good and the leakage problem is not easy to occur.

[0031] Referring to Figure 1 and Figure 4 , the mechanical seal base 51 is provided with a flowing water cavity 50, the flowing water cavity 50 is provided with a water inlet 511 and a water outlet 512, the water inlet 511 is connected with an external water inlet pipe, the water outlet 512 is connected with an external water outlet pipe, the first dynamic ring 43 and the first static ring 53 have a first contact surface 91, the second dynamic ring 44 and the second static ring 54 have a second contact surface 92, and the water in the flowing water cavity 50 is used to cool the first contact surface 91 and the second contact surface 92, so that the wear of the first contact surface 91 and the second contact surface 92 is reduced after cooling, and the service life is increased.

[0032] The machine seal assembly is convenient to disassemble and maintain, low in cost, and reliable in operation; the first static ring is extruded onto the first dynamic ring by the pressure of the oil cavity, improving the sealing performance and making the operation more reliable; when the rotor in the pump body rotates, the hydraulic pressure in the oil cavity increases, forming a thrust on the end of the first static ring, thereby increasing the extrusion force between the first static ring and the first dynamic ring, further improving the sealing performance between the first static ring and the first dynamic ring, and making the operation more reliable; the extrusion force received by the first dynamic ring can be transmitted to the second dynamic ring through the dynamic ring transmission sleeve, thereby increasing the extrusion force between the second dynamic ring and the second static ring, further improving the sealing performance between the second dynamic ring and the second static ring, and being reasonable in structure design; the first spring provides an elastic force to the first static ring, so that a certain extrusion force always exists between the first static ring and the first dynamic ring, thereby guaranteeing the sealing performance between the first static ring and the first dynamic ring; the first spring and the second spring are wave springs, so that a greater elastic force is provided in a shorter compression stroke of the spring, and the structure is compact; the wave spring also has the advantages of high load-carrying capacity and strong shock-absorbing capacity; the first end of the first static ring close to the first dynamic ring is provided with a first inclined surface, the relative friction between the first static ring and the first dynamic ring can cause the end surface of the first static ring close to the first dynamic ring to be thinned, and the first inclined surface can increase the contact surface between the first static ring and the first dynamic ring in this process, thereby improving the sealing performance of the contact surface; the water in the flowing water cavity is used to cool the first contact surface and the second contact surface, and the cooling can reduce the abrasion of the first contact surface and the second contact surface, and increase the service life.

[0033] The above only describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A containerized double-end mechanical seal, characterized in that, include: A pump body (1) and a mechanical seal assembly (2) detachably connected to the pump body (1). A rotating shaft (3) is rotatably mounted on the pump body (1). The mechanical seal assembly (2) is sleeved on the rotating shaft (3). The mechanical seal assembly (2) includes a rotating part and a fixed part that can rotate relative to each other. The rotating part is connected to the rotating shaft (3) and rotates synchronously. The fixed part is fixedly connected to the pump body (1). The rotating part includes a bushing (41), a rotating ring, and a rotating ring transmission sleeve (42). The bushing (41) is fixedly sleeved on the outside of the rotating shaft (3). The rotating ring and the rotating ring transmission sleeve (42) are both fixedly sleeved on the outside of the bushing (41). The rotating ring includes a first rotating ring (43) and a second rotating ring (44) symmetrically distributed on both sides of the rotating ring transmission sleeve (42). The fixed part includes a mechanical seal seat (51), a stationary ring and a stationary ring seat (52). The mechanical seal seat (51), the stationary ring seat (52) and the pump body (1) are detachably fixedly connected. The stationary ring includes a first stationary ring (53) and a second stationary ring (54) symmetrically distributed. An oil chamber (101) communicating with oil is provided between the pump body (1) and the stationary ring seat (52). One end of the first stationary ring (53) is placed in the oil chamber (101), and the other end of the first stationary ring (53) abuts against one side of the first rotating ring (43).

2. The containerized double-end mechanical seal according to claim 1, characterized in that, The moving ring drive sleeve (42) is slidably disposed along the axial direction of the bushing (41), and one end of the second stationary ring (54) abuts against the side of the second moving ring (44) away from the moving ring drive sleeve (42) for sealing.

3. The containerized double-end mechanical seal according to claim 2, characterized in that, A first spring (61) is provided between the first stationary ring (53) and the stationary ring seat (52). The elastic force of the first spring (61) drives one end of the first stationary ring (53) to abut against the first moving ring (43). A second spring (62) is provided between the second stationary ring (54) and the mechanical seal seat (51). The elastic force of the second spring (62) drives one end of the second stationary ring (54) to abut against the second moving ring (44).

4. The containerized double-end mechanical seal according to claim 3, characterized in that, The first stationary ring (53) is provided with a first flange (531), and the first spring (61) abuts between the first flange (531) and the stationary ring seat (52); the second stationary ring (54) is provided with a second flange (541), and the second spring (62) abuts between the second flange (541) and the mechanical seal seat (51), and both the first spring (61) and the second spring (62) are wave springs.

5. The containerized double-end mechanical seal according to claim 1, characterized in that, The moving ring transmission sleeve (42) is symmetrically provided with a first protrusion (421) and a second protrusion (422) on both sides. The first moving ring (43) is provided with a first slot (431) corresponding to the first protrusion (421), and the second moving ring (44) is provided with a second slot (441) corresponding to the second protrusion (422).

6. The containerized double-end mechanical seal according to claim 1, characterized in that, The first stationary ring (53) has a first inclined surface (532) at one end near the first moving ring (43), and the second stationary ring (54) has a second inclined surface (542) at one end near the second moving ring (44).

7. The containerized double-end mechanical seal according to claim 1, characterized in that, The pump body (1) is provided with a cavity (102) for containing oil. A rotor (31) is fixedly connected to the rotating shaft (3). The rotor (31) is placed in the cavity (102). A gap (103) is formed between the rotor (31) and the pump body (1). The cavity (102) is connected to the oil cavity (101) through the gap (103).

8. The containerized double-end mechanical seal according to claim 1, characterized in that, The mechanical seal seat (51), the stationary ring seat (52), and the pump body (1) are detachably fixed by a first bolt (71). A second bolt (72) connects the rotating shaft (3) and the bushing (41). The pump body (1) includes a first housing (11), a second housing (12), and a third housing (13) connected between the first housing (11) and the second housing (12). The first housing (11), the second housing (12), and the third housing (13) are fixed by a third bolt (73). A fourth bolt (74) connects the moving ring transmission sleeve (42) and the bushing (41). An elliptical limiting groove (411) is provided on the bushing (41). One end of the fourth bolt (74) passes through the moving ring transmission sleeve (42) and falls into the limiting groove (411).

9. The containerized double-end mechanical seal according to claim 1, characterized in that, A first sealing ring (81) is provided between the mechanical seal seat (51) and the stationary ring seat (52), a second sealing ring (82) is provided between the stationary ring seat (52) and the pump body (1), a third sealing ring (83) is provided between the first stationary ring (53) and the stationary ring seat (52), a fourth sealing ring (84) is provided between the bushing (41) and the rotating shaft (3), a fifth sealing ring (85) is provided between the first moving ring (43) and the bushing (41), a sixth sealing ring (86) is provided between the second moving ring (44) and the bushing (41), and a seventh sealing ring (87) is provided between the second stationary ring (54) and the mechanical seal seat (51).

10. The containerized double-end mechanical seal according to any one of claims 1-9, characterized in that, The mechanical seal base (51) has a flow water chamber (50), which is provided with a water inlet (511) and a water outlet (512). The water inlet (511) is connected to an external water inlet pipe, and the water outlet (512) is connected to an external water outlet pipe. The first moving ring (43) and the first stationary ring (53) have a first contact surface (91), and the second moving ring (44) and the second stationary ring (54) have a second contact surface (92). The water in the flow water chamber (50) cools the first contact surface (91) and the second contact surface (92).

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