Magnetic drive pump easy to clean

By introducing an isolation cover and an isolation cover into the magnetic pump, the first notch of the isolation cover allows the cleaning liquid to enter the internal magnetic rotor, solving the problem of low cleaning efficiency of the existing magnetic pump and achieving an efficient cleaning process.

CN222276927UActive Publication Date: 2024-12-31SHENZHEN XUDE MASCH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421036648.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-13
Publication Date
2024-12-31
Estimated Expiration
2034-05-13

AI Technical Summary

Technical Problem

The magnetic pumps on the market have complex structures, resulting in low cleaning efficiency and it is difficult to enter the cleaning liquid into the internal magnetic rotor. Usually, the pump needs to be removed for cleaning.

Method used

An easy-to-clean magnetic pump is designed. By introducing an isolation cover and an isolation sleeve into the pump, the first notch of the isolation cover allows the cleaning liquid to enter the inner magnetic rotor for cleaning, avoiding the need to disassemble the pump.

Benefits of technology

An efficient cleaning process is achieved, and the cleaning liquid can directly enter the internal magnetic rotor, improving the cleaning efficiency and simplifying the cleaning process.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222276927U_ABST
    Figure CN222276927U_ABST
Patent Text Reader

Abstract

The utility model discloses an easy-to-clean magnetic drive pump which comprises a driving motor, an inner magnetic rotor, an outer magnetic rotor, a mounting cylinder, a shaft sleeve, an isolation sleeve, an adapter shaft, a pump cavity, an isolation cover, a driven shaft, a driven gear, a main transmission shaft and a main transmission gear, the main transmission gear is rotationally arranged in the main transmission shaft on the isolation cover, the bottom end of the main transmission gear extends to be provided with an extension clamping part which penetrates through a first penetrating hole of the isolation cover and is fixedly connected with the adapter shaft, the top end of the isolation sleeve is arranged in the containing cavity of the pump cavity, and the end, facing the driving motor, of the first penetrating hole of the isolation cover is in a funnel shape; and a first notch communicated with the first penetrating hole is also formed in the isolation cover. By means of the mode, when the magnetic drive pump easy to clean is cleaned, cleaning liquid can enter the inner magnetic rotor through the first notch of the isolation cover for cleaning, the pump does not need to be disassembled for cleaning, and the cleaning efficiency is high.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic pumps, in particular to an easy-to-clean magnetic pump. Background Art

[0002] The commonly used magnetic pump adopts a method of transmission in which the main transmission shaft is fixedly embedded in the heart of the main transmission gear and the driven shaft is fixedly embedded in the heart of the driven gear. When working, the driving motor drives the outer magnetic rotor to rotate, and the outer magnetic rotor drives the inner magnetic rotor to rotate, so that the inner magnetic rotor drives the main transmission shaft to rotate, thereby driving the main transmission gear and the driven gear to rotate.

[0003] However, the structure of the magnetic pumps on the market is relatively complex. During cleaning, due to the complex structure, it is difficult for the cleaning liquid to clean all the components inside the magnetic pump. For example, it is difficult for the cleaning liquid to enter the inner magnetic rotor for cleaning. The pump is often disassembled for cleaning, and the cleaning efficiency is low. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides an easy-to-clean magnetic pump, which can solve the above technical problems.

[0006] (II) Technical solution

[0007] To solve the above technical problems, the utility model provides the following technical solutions: an easy-to-clean magnetic pump, comprising a driving motor, an inner magnetic rotor in an annular shape and an outer magnetic rotor in an annular shape, characterized in that it also comprises: a mounting cylinder, arranged on the driving motor, wherein the mounting cylinder is penetrated by a first receiving through hole, and the rotating shaft of the driving motor is located in the first receiving through hole; a sleeve, arranged in the first receiving through hole of the mounting cylinder, wherein the bottom end of the sleeve is connected to the rotating shaft of the driving motor to drive the sleeve to rotate through the driving motor, and the sleeve is penetrated by a second receiving through hole, and the outer magnetic rotor is arranged in the inner wall of the second receiving through hole of the sleeve; an isolation sleeve, arranged in the inner hole of the outer magnetic rotor, wherein the isolation sleeve is provided with a receiving groove; a transfer shaft, arranged in the receiving groove, wherein the inner magnetic rotor is arranged outside the outer wall of the transfer shaft; a pump cavity, arranged above the mounting cylinder, and provided with a receiving cavity connected to the receiving groove of the isolation sleeve, wherein The two sides of the pump cavity are respectively provided with a first opening and a second opening connected with the receiving cavity; an isolation cover is arranged in the receiving cavity of the pump cavity, wherein the isolation cover is provided with a first penetration hole and a first mounting hole at intervals; a driven shaft is fixedly arranged in the first mounting hole of the isolation cover; a driven gear is rotatably arranged in the driven shaft; a main transmission shaft, one end of which is fixedly arranged in the receiving cavity, and the other end passes through the first penetration hole of the isolation cover and is located in the adapter shaft; a main transmission gear is engaged with the driven gear and is rotatably arranged in the main transmission shaft on the isolation cover, wherein the bottom end of the main transmission gear is extended with an extended clamping portion that passes through the first penetration hole of the isolation cover and is fixedly connected to the adapter shaft; wherein the top end of the isolation sleeve is arranged in the receiving cavity of the pump cavity, the first penetration hole of the isolation cover is funnel-shaped toward one end of the drive motor, and a first notch connected to the first penetration hole is also provided in the isolation cover.

[0008] Furthermore, a first isolation pad is arranged above the isolation cover, and the driven gear and the main transmission gear are arranged above the first isolation pad, wherein the first isolation pad is provided with a second penetration hole corresponding to the first penetration hole, a third penetration hole corresponding to the first mounting hole, and a second notch corresponding to the first notch, the driven shaft passes through the third penetration hole, and the main transmission shaft passes through the second penetration hole.

[0009] Furthermore, the top end of the adapter shaft is provided with a third receiving through hole along its length direction, and the top end of the adapter shaft is provided with a first clamping hole connected to the third receiving through hole, wherein the extended clamping portion is received and clamped in the first clamping hole, and the other end of the main transmission shaft passes through the first penetration hole and the extended clamping portion and is located in the third receiving through hole of the adapter shaft.

[0010] Furthermore, the pump cavity includes: a pump body, which is provided with the receiving cavity; a front pump cover, which is arranged above the pump body and is used to seal the receiving cavity; a rear pump cover, which is arranged below the pump body and is located on the mounting tube, wherein the rear pump cover is provided with a fourth receiving through hole which is connected to the receiving cavity and the receiving groove of the isolation sleeve, and the isolation cover is arranged above the rear pump cover, and the top end of the adapter shaft is passed through the fourth receiving through hole.

[0011] Furthermore, the upper end surface of the rear pump cover is provided with a ring-shaped receiving slot which is connected to the fourth receiving through hole, wherein the top end of the isolation sleeve is passed through the fourth receiving through hole, and the top end of the isolation sleeve is provided with a second extending clamping portion which is ring-shaped and clamped in the receiving slot.

[0012] Furthermore, a second isolation pad is arranged above the driven gear and the main transmission gear, and the second isolation pad is provided with a first opening and a second opening at intervals, wherein the top end of the driven shaft passes through the first opening and is clamped in the front cover plate, and the top end of the main transmission shaft passes through the second opening and is clamped in the front cover plate.

[0013] Furthermore, a second clamping hole and a third clamping hole are arranged at intervals on the bottom surface of the front cover plate, the top end of the driven shaft is provided with a third extending clamping portion which is received and clamped in the second clamping hole, and the top end of the main transmission shaft is provided with a fourth extending clamping portion which is received and clamped in the third clamping hole.

[0014] Furthermore, the rear pump cover is provided with a flow hole that enables the receiving groove of the isolation sleeve to communicate with the receiving cavity.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides an easy-to-clean magnetic pump, which has the following beneficial effects: the easy-to-clean magnetic pump disclosed in the utility model includes a driving motor, an inner magnetic rotor, an outer magnetic rotor, a mounting cylinder, a sleeve, a spacer sleeve, an adapter shaft, a pump cavity, an isolation cover, a driven shaft, a driven gear, a main transmission shaft and a main transmission gear, wherein the main transmission gear is engaged with the driven gear, and the main transmission gear is rotatably arranged in the main transmission shaft on the isolation cover, and the bottom end of the main transmission gear is extended with a first through-hole through the isolation cover and an extended clamping portion fixedly connected to the adapter shaft, and the top end of the isolation cover is arranged in the receiving cavity of the pump cavity, and the first through-hole of the isolation cover is funnel-shaped toward one end of the driving motor, and a first notch connected to the first through-hole is also provided in the isolation cover. In the above manner, the easy-to-clean magnetic pump disclosed in the utility model can allow the cleaning liquid to enter the inner magnetic rotor through the first notch of the isolation cover for cleaning during cleaning, and the pump does not need to be disassembled for cleaning, and the cleaning efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of the easy-to-clean magnetic pump of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the first partial structure of the easy-to-clean magnetic pump;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the drive motor of the easy-to-clean magnetic pump;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the installation barrel of the easy-to-clean magnetic pump;

[0021] Figure 5 for Figure 1 A schematic diagram of the second partial structure of the medium-easy-to-clean magnetic pump;

[0022] Figure 6 for Figure 1 A schematic diagram of the third partial structure of the easy-to-clean magnetic pump;

[0023] Figure 7 for Figure 6 Schematic diagram of the cutaway structure in ;

[0024] Figure 8 for Figure 1 A schematic diagram of the fourth partial structure of the easy-to-clean magnetic pump;

[0025] Fig. 9 for Figure 1 The schematic diagram of the structure of the pump body of the medium-easy-to-clean magnetic pump;

[0026] Fig.10 for Figure 1 Schematic diagram of the structure of the rear pump cover of the easy-to-clean magnetic pump;

[0027] Fig.11 for Figure 1 A first structural schematic diagram of the isolation cover of the easy-to-clean magnetic pump;

[0028] Fig.12 for Figure 1 A second structural schematic diagram of the isolation cover of the easy-to-clean magnetic pump;

[0029] Fig.13 for Figure 1 Schematic diagram of the structure of the front pump cover of the easy-to-clean magnetic pump;

[0030] Fig.14 for Figure 1 A schematic diagram of the fifth partial structure of the easy-to-clean magnetic pump;

[0031] Fig.15 for Figure 1 Schematic diagram of the structure of the first isolation pad of the easy-to-clean magnetic pump. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-15 As shown, the utility model provides an easy-to-clean magnetic pump, which includes a driving motor 10, an inner magnetic rotor 11 in a circular ring shape, an outer magnetic rotor 12 in a circular ring shape, a mounting cylinder 13, a sleeve 14, an isolation sleeve 15, an adapter shaft 16, a pump cavity 17, an isolation cover 18, a driven shaft 19, a driven gear 20, a main transmission shaft 21 and a main transmission gear 22.

[0034] The mounting tube 13 is disposed on the driving motor 10 , wherein a first receiving through hole 131 passes through the mounting tube 13 , and a rotating shaft of the driving motor 10 is located in the first receiving through hole 131 .

[0035] The shaft sleeve 14 is located in the first receiving through hole 131 of the mounting tube 13 , wherein the bottom end of the shaft sleeve 14 is connected to the rotating shaft of the driving motor 10 so as to drive the shaft sleeve 14 to rotate through the driving motor 10 .

[0036] In this embodiment, a second receiving through hole is passed through the shaft sleeve 14 , wherein the outer magnetic rotor 12 is disposed in the inner wall of the second receiving through hole of the shaft sleeve 14 .

[0037] The isolation sleeve 15 is located in the inner hole of the outer magnetic rotor 12 , that is, the isolation sleeve 15 is also located in the second receiving through hole of the shaft sleeve 14 , wherein the isolation sleeve 15 is provided with a receiving groove 151 .

[0038] The transfer shaft 16 is in the receiving groove 151, wherein the inner magnetic rotor 11 is arranged outside the outer wall of the transfer shaft 16, so that the inner magnetic rotor 11 and the transfer shaft 16 move synchronously. It should be understood that the bottom of the receiving groove 151 is not connected to the second receiving through hole of the sleeve 14, so that the inner magnetic rotor 11 and the outer magnetic rotor 12 are sealed and do not contact each other, and when the outer magnetic rotor 12 rotates, the inner magnetic rotor 11 can be driven to rotate by magnetic force, thereby driving the transfer shaft 16 to rotate.

[0039] The pump cavity 17 is disposed above the mounting tube 13, wherein the pump cavity 17 is provided with a receiving cavity 170 communicating with the receiving groove 151 of the isolation sleeve 15, and the two sides of the pump cavity 17 are respectively provided with a first opening and a second opening communicating with the receiving cavity 170. It should be understood that the first opening and the second opening can be used as a liquid input port and a liquid output port.

[0040] The isolation cover 18 is disposed in the receiving cavity 170 of the pump cavity 17, wherein the isolation cover 18 is provided with a first penetration hole 181 and a first mounting hole 182 at intervals. It should be understood that the isolation cover 18 is disposed at the bottom of the receiving cavity 170 of the pump cavity 17.

[0041] The driven shaft 19 is fixedly arranged in the first mounting hole 182 of the isolation cover 18, that is, the rotated shaft 19 is fixed and does not rotate.

[0042] The driven gear 20 is rotatably disposed in the driven shaft 19 .

[0043] One end of the main transmission shaft 21 is fixedly disposed in the receiving cavity 170, and the other end of the main transmission shaft 21 passes through the first penetration hole 181 of the isolation cover 18 and is located in the adapter shaft 16. It should be understood that the main transmission shaft 21 is also fixed and does not rotate.

[0044] The main transmission gear 22 is engaged with the driven gear 20, wherein the main transmission gear 22 is rotatably set in the main transmission shaft 21 on the isolation cover 18, and the bottom end of the main transmission gear 22 is extended with an extended clamping portion 221 that passes through the first penetration hole 181 of the isolation cover 18 and is fixedly connected to the adapter shaft 16, so as to drive the main transmission gear 22 through the adapter shaft 16, thereby driving the driven gear 20.

[0045] Preferably, the top end of the adapter shaft 16 is provided with a third receiving through hole 161 along its length direction, and the top end of the adapter shaft 16 is provided with a first clamping hole 162 communicating with the third receiving through hole 161, wherein the extended clamping portion 221 is received and clamped in the first clamping hole 162, and the other end of the main transmission shaft 21 passes through the first penetration hole 181 and the extended clamping portion 221 and is located in the third receiving through hole 161 of the adapter shaft 16. In other words, the main transmission shaft 21 is located in the third receiving through hole 161 and does not rotate, while the adapter shaft 16 can rotate relative to the main transmission shaft 21, thereby driving the main transmission gear 22 to rotate relative to the main transmission shaft 21.

[0046] In the present embodiment, the top end of the isolation sleeve 15 is arranged in the receiving cavity 170 of the pump cavity 17, wherein the first penetration hole 181 of the isolation cover 18 is funnel-shaped toward one end of the drive motor 10, and the isolation cover 18 is also provided with a first notch 183 connected to the first penetration hole 181, so that the liquid in the receiving cavity 170 can enter the isolation sleeve 15 through the first notch 183 to clean the inner magnetic rotor 11 in the isolation sleeve 15, thereby achieving the need to clean the pump without disassembling it, and also possible to clean most of the components in the pump (the outer magnetic rotor 12 is connected to the drive motor 10, and is sealed and separated from the inner magnetic rotor 11, and does not need to be cleaned).

[0047] Furthermore, a first isolation pad 23 is arranged above the isolation cover 18, and the driven gear 20 and the main transmission gear 22 are arranged above the first isolation pad 23, wherein the first isolation pad 23 is provided with a second penetration hole 231 corresponding to the first penetration hole 181, a third penetration hole 232 corresponding to the first mounting hole 182, and a second notch 233 corresponding to the first notch 183, and the driven shaft 19 passes through the third penetration hole 232, and the main transmission shaft 21 passes through the second penetration hole 231.

[0048] In this embodiment, the pump cavity 17 includes a pump body 171, a front pump cover 172 and a rear pump cover 173. The pump body 171 is provided with a receiving cavity 170, the front pump cover 172 is arranged above the pump body 171 to seal the receiving cavity 170, and the rear pump cover 173 is arranged below the pump body 171 and on the mounting cylinder 13.

[0049] Preferably, the rear pump cover 173 is provided with a fourth receiving through hole 1731 connected with the receiving cavity 170 and the receiving groove 151 of the isolation sleeve 15, wherein the isolation cover 18 is arranged above the rear pump cover 173, and the top end of the adapter shaft 16 is passed through the fourth receiving through hole 1731.

[0050] Furthermore, the upper end surface of the rear pump cover 173 is provided with a ring-shaped receiving slot 1732 which is connected to the fourth receiving through hole 1731, wherein the top end of the isolation sleeve 15 is inserted into the fourth receiving through hole 1731, and the top end of the isolation sleeve 15 is provided with a second extending clamping portion 152 which is ring-shaped and clamped in the receiving slot 1732. It should be understood that the aperture of the receiving slot 1732 is equal to the outer diameter of the second extending clamping portion 152, so that the second extending clamping portion 152 is tightly arranged in the receiving slot 1732, so that the liquid in the receiving cavity 170 cannot flow out of the isolation sleeve 15, and the sealing effect is good, so that the liquid can flow between the receiving cavity 170 and the receiving groove 151 of the isolation sleeve 15, and the structural components in the receiving cavity 170 and the receiving groove 151 can be cleaned.

[0051] In this embodiment, a second isolation pad 24 is arranged above the driven gear 20 and the main transmission gear 22, and the second isolation pad 24 is provided with a first opening and a second opening at intervals, wherein the top end of the driven shaft 19 passes through the first opening and is clamped in the front cover 172, and the top end of the main transmission shaft 21 passes through the second opening and is clamped in the front cover 172.

[0052] Furthermore, a second clamping hole 1721 and a third clamping hole 1722 are spaced apart on the bottom surface of the front cover plate 172, wherein the top end of the driven shaft 19 is provided with a third extending clamping portion which is received and clamped in the second clamping hole 1721, so that the driven shaft 19 cannot rotate, and the top end of the main transmission shaft 21 is provided with a fourth extending clamping portion which is received and clamped in the third clamping hole 1722, so that the main transmission shaft 21 cannot rotate.

[0053] Furthermore, the rear pump cover 173 is provided with a flow hole that connects the receiving groove 151 of the isolation sleeve 15 with the receiving cavity 170 , so that the flow of liquid between the receiving cavity 170 and the receiving groove 151 of the isolation sleeve 15 is smoother.

[0054] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

Claims

1. An easy-to-clean magnetic pump, comprising a driving motor, an inner magnetic rotor in an annular shape and an outer magnetic rotor in an annular shape, characterized in that: Also includes: A mounting tube, arranged on the driving motor, wherein the mounting tube passes through a first receiving through hole, and the rotating shaft of the driving motor is located in the first receiving through hole; A shaft sleeve is located in the first receiving through hole of the mounting tube, wherein the bottom end of the shaft sleeve is connected to the rotating shaft of the driving motor so as to drive the shaft sleeve to rotate through the driving motor, and the shaft sleeve is penetrated by a second receiving through hole, and the outer magnetic rotor is arranged in the inner wall of the second receiving through hole of the shaft sleeve; An isolating sleeve is located in the inner hole of the outer magnetic rotor, wherein the isolating sleeve is provided with a receiving groove; A transfer shaft is located in the receiving groove, wherein the inner magnetic rotor is arranged outside the outer wall of the transfer shaft; A pump cavity is arranged above the mounting tube and is provided with a receiving cavity communicated with the receiving groove of the isolation sleeve, wherein two sides of the pump cavity are respectively provided with a first opening and a second opening communicated with the receiving cavity; An isolation cover is arranged in the receiving cavity of the pump cavity, wherein the isolation cover is provided with a first penetration hole and a first mounting hole at intervals; The driven shaft is fixedly arranged in the first mounting hole of the isolation cover; A driven gear, rotatably disposed in the driven shaft; A main transmission shaft, one end of which is fixedly disposed in the receiving cavity, and the other end of which passes through the first through hole of the isolation cover and is located in the adapter shaft; A main transmission gear meshes with the driven gear and is rotatably arranged in the main transmission shaft on the isolation cover, wherein the bottom end of the main transmission gear is provided with an extended clamping portion that passes through a first penetration hole of the isolation cover and is fixedly connected to the adapter shaft; Among them, the top end of the isolation sleeve is arranged in the receiving cavity of the pump cavity, the first penetration hole of the isolation cover is funnel-shaped towards one end of the driving motor, and the isolation cover is also provided with a first notch connected to the first penetration hole.

2. The easy-to-clean magnetic pump according to claim 1, characterized in that: A first isolation pad is arranged above the isolation cover, and the driven gear and the main transmission gear are arranged above the first isolation pad, wherein the first isolation pad is provided with a second penetration hole corresponding to the first penetration hole, a third penetration hole corresponding to the first mounting hole, and a second notch corresponding to the first notch, the driven shaft passes through the third penetration hole, and the main transmission shaft passes through the second penetration hole.

3. The easy-to-clean magnetic pump according to claim 1, characterized in that: The top end of the adapter shaft is provided with a third receiving through hole along its length direction, and the top end of the adapter shaft is provided with a first clamping hole connected with the third receiving through hole, wherein the extended clamping portion is received and clamped in the first clamping hole, and the other end of the main transmission shaft passes through the first penetration hole and the extended clamping portion and is located in the third receiving through hole of the adapter shaft.

4. The easy-to-clean magnetic pump according to claim 3, characterized in that: The pump chamber comprises: A pump body, provided with the receiving cavity; A front pump cover, arranged above the pump body, for sealing the receiving cavity; The rear pump cover is arranged below the pump body and on the mounting tube, wherein the rear pump cover is provided with a fourth receiving through hole connected with the receiving cavity and the receiving groove of the isolation sleeve, and the isolation cover is arranged above the rear pump cover, and the top end of the adapter shaft is passed through the fourth receiving through hole.

5. The easy-to-clean magnetic pump according to claim 4, characterized in that: The upper end surface of the rear pump cover is provided with a ring-shaped receiving slot which is connected to the fourth receiving through hole, wherein the top end of the isolation sleeve is passed through the fourth receiving through hole, and the top end of the isolation sleeve is provided with a second extending clamping portion which is ring-shaped and clamped in the receiving slot.

6. The easy-to-clean magnetic pump according to claim 4, characterized in that: A second isolation pad is arranged above the driven gear and the main transmission gear, and the second isolation pad is provided with a first opening and a second opening at intervals, wherein the top end of the driven shaft passes through the first opening and is clamped in the front pump cover, and the top end of the main transmission shaft passes through the second opening and is clamped in the front pump cover.

7. The easy-to-clean magnetic pump according to claim 6, characterized in that: The bottom surface of the front pump cover is provided with a second clamping hole and a third clamping hole at intervals, the top end of the driven shaft is provided with a third extending clamping portion which is received and clamped in the second clamping hole, and the top end of the main transmission shaft is provided with a fourth extending clamping portion which is received and clamped in the third clamping hole.

8. The easy-to-clean magnetic pump according to claim 4, characterized in that: The rear pump cover is provided with a flow hole that enables the receiving groove of the isolation sleeve to communicate with the receiving cavity.