CN221015778U - Convenient abluent chemical reagent auxiliary agent emulsifier - Google Patents

Abstract

The utility model relates to the technical field of chemical reagent auxiliary agents, in particular to a chemical reagent auxiliary agent emulsifier convenient to clean, wherein a rotating shaft is fixedly arranged on the outer wall of the emulsifier, a top plate is fixedly arranged at the top end of a vertical plate, a rotating wheel is fixedly connected to the rear side of the rotating shaft, a plurality of hydraulic cylinders are fixedly arranged in the top plate and the bottom plate, extrusion blocks are fixedly arranged at the front ends of the hydraulic cylinders, and the front ends of the extrusion blocks are movably connected with two sides of the emulsifier. This convenient abluent chemical reagent auxiliary agent emulsifier drives the emulsifier upset through the runner, then goes out inside the water end inserts the butt joint hose that corresponds, starts the high-pressure pump, with the water tank water delivery to the emulsifier inside, then the inside clear water of emulsifier can be by down to the inside packing of emulsifier, utilized the all-round wash structure of the washing that can also do residual emulsion on the wash pipe after overturning the emulsifier, finally improved convenient abluent chemical reagent auxiliary agent emulsifier's cleaning effect.

Description

Convenient abluent chemical reagent auxiliary agent emulsifier

Technical Field

The utility model relates to the technical field of chemical reagent assistants, in particular to a chemical reagent assistant emulsifier convenient to clean.

Background

The emulsification process is widely used in the fields of food industry, fine chemical industry, biomedicine and the like, and refers to mixing two immiscible liquids to form an emulsion liquid, that is, one of the two liquids is changed into tiny particles to be dispersed in the other, for example, two-phase mixing of an oil phase and a water phase can form an oil-in-water emulsion, wherein the oil phase is a dispersed phase, the water phase is a dispersion medium, two-phase mixing of the oil phase and the water phase can also form a water-in-oil emulsion, wherein the water phase is a dispersed phase, the oil phase is a dispersion medium, energy input such as grinding, stirring, ultrasound and the like is required in the emulsification process, and the two-phase mixing is promoted.

For example, the authorized bulletin number CN216726827U is named as a chemical agent auxiliary agent emulsifier, although the filter screen is arranged, the filter screen can filter chemical agents when discharging, the filter screen can filter particles well, the particles continue to stay in the box for emulsification, the emulsification effect of the chemical agent auxiliary agent is improved, the existing chemical agent auxiliary agent emulsifier still exists, the existing cleaning mode only depends on high-pressure water flow from top to bottom for cleaning the inside of the emulsifier after emulsification is finished, but raw materials for emulsification operation in the inside of the emulsifier belong to oil-water two-phase emulsion, so that the texture is sticky and can adhere to the inner wall of the emulsifier, the emulsified emulsion can be stirred and rotated along with the inside of the emulsifier to turn up and down, the turned emulsion can also adhere to a cleaning pipe above, dead corners of the cleaning pipe for high-pressure water flow cannot be cleaned in place, the cleaning inside of the chemical agent auxiliary agent emulsifier can be remained finally, and the cleaning effect of the chemical agent auxiliary agent emulsifier is affected.

Meanwhile, the existing chemical reagent auxiliary agent emulsifier is characterized in that the feed hopper for inputting raw materials into the interior of the emulsifier is arranged at the top end of the emulsifier, but a shielding structure for the feed hopper of the emulsifier is lacked, so that liquid raw materials are very easy to gush out at the position of the feed hopper when being stirred and rolled in the interior of the emulsifier, waste of materials is caused, the outer shell of the emulsifier can be polluted by emulsion flowing to the outside, the condition of inconvenient cleaning is caused, and finally the use cost of the chemical reagent auxiliary agent emulsifier is increased.

Disclosure of utility model

The utility model aims to solve the problems of poor cleaning effect and increased use cost of the traditional chemical reagent auxiliary agent emulsifier, and provides a chemical reagent auxiliary agent emulsifier convenient to clean.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a convenient abluent chemical reagent auxiliary agent emulsifier, includes emulsifier and observation window, the fixed outer wall of seting up at the emulsifier of observation window, the outside of emulsifier is equipped with emulsification upset cleaning structure, emulsification upset cleaning structure includes bottom plate, axis of rotation and pneumatic cylinder, axis of rotation fixed mounting is at the outer wall of emulsifier, the outside of axis of rotation rotates and is connected with the riser, bottom plate fixed mounting is in the lower extreme of riser, the top fixed mounting of riser has the roof, the rear side fixedly connected with runner of axis of rotation, a plurality of pneumatic cylinder fixed mounting is inside roof and bottom plate, a plurality of the front end fixed mounting of pneumatic cylinder has the extrusion piece, a plurality of the front end of extrusion piece links to each other with the both sides activity of emulsifier.

Preferably, an emulsifying and stirring structure is arranged in the emulsifying device;

the emulsifying and stirring structure comprises a motor, a discharging slope and a discharging valve;

the motor is fixedly arranged at the top end of the emulsifier, the output shaft of the motor is fixedly provided with a rotating rod through a speed reducer, the downhill is fixedly arranged at the bottom end of the interior of the emulsifier, two sides of the rotating rod are rotationally connected with the interior of the emulsifier through bearings, the outer side of the rotating rod is fixedly provided with a plurality of stirring blades, the front ends of the stirring blades are fixedly provided with stirring rods, and the discharge valve is fixedly connected with the lower end of the emulsifier.

Preferably, a cleaning water supply structure is arranged in the emulsifier;

The cleaning water supply structure comprises a water spray pipe, a water inlet cavity and a butt joint hose;

The utility model discloses a spray pipe, including the spray pipe, the spray pipe is fixed to be linked together on the inside top of emulsifier, the below fixed intercommunication of spray pipe has many shower nozzles, the fixed intercommunication in one side of spray pipe has the butt joint hose, the inside of butt joint hose is equipped with the intake chamber, the outside threaded connection of butt joint hose has the screwed pipe, the outside fixed mounting of screwed pipe has the rotation circle.

Preferably, a water delivery butt joint structure is arranged in the vertical plate;

The water delivery butt joint structure comprises a water tank, a telescopic pipe and a water outlet end;

the telescopic pipe movable mounting is in the inside of riser, the front end fixed connection of telescopic pipe has a water outlet end, fixed mounting has sealed pad between water outlet end and the telescopic pipe, the other end fixed connection of telescopic pipe has the raceway, the tip fixed connection of raceway has the water tank, water tank fixed mounting is on the ground of keeping away from bottom plate one side, the outside fixed mounting of raceway has the high-pressure pump.

Preferably, the front end of the water outlet end is movably connected in the butt joint hose, the front end of the water outlet end is communicated with the water inlet cavity, and the water delivery pipe is movably communicated with the water spray pipe.

Preferably, the outer wall of the emulsifier is provided with a sealing feeding structure;

The sealing feeding structure comprises a feeding channel, a sealing cover and a fixing bolt;

The feeding channel is fixedly arranged on the outer wall of the emulsifier, an extension ring is fixedly connected to the outer side of the feeding channel, the sealing cover is movably sleeved on the outer side of the extension ring, a plurality of fixing bolts are in threaded connection on the outer side of the sealing cover, and the front ends of the fixing bolts are tightly attached to the outer wall of the extension ring.

The utility model provides a chemical reagent auxiliary agent emulsifier convenient to clean, which has the beneficial effects that: the emulsifying device is driven to overturn through the rotating wheel, then the water outlet end is inserted into the corresponding butt joint hose, the high-pressure pump is started, the water tank is used for conveying water into the emulsifying device, then clear water in the emulsifying device can be filled up from bottom to top, the omnibearing cleaning structure for cleaning residual emulsion on the cleaning pipe after the emulsifying device is overturned is utilized, and finally the cleaning effect of the chemical reagent auxiliary agent emulsifying device convenient to clean is improved.

The sealing effect is better through adopting latex to make in the sealed lid inboard, through tightening a plurality of fixing bolt in the outside then make sealed lid can firmly fix the front end at feed channel, can open feed channel at any time then reach the effect of adding the raw materials, utilized can dismantle and reach sealed lid of effect, avoided the emulsion that rolls can flow when emulsifying in inside and cause extravagant, reduced convenient abluent chemical reagent auxiliary agent emulsifier's use cost.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic front cross-sectional view of the emulsification process of FIG. 1;

FIG. 3 is a schematic front cross-sectional view of the cleaning process of FIG. 2;

FIG. 4 is a side elevational schematic view of FIG. 2;

FIG. 5 is an enlarged cross-sectional view of the portion A of FIG. 3;

Fig. 6 is an enlarged sectional view of the portion B in fig. 3.

In the figure: 1. the emulsifying device comprises an emulsifying device, 2, an emulsifying turnover cleaning structure, 21, a bottom plate, 22, a vertical plate, 23, a top plate, 24, a rotating wheel, 25, a rotating shaft, 26, an extrusion block, 27, a hydraulic cylinder, 3, an emulsifying stirring structure, 31, a motor, 32, a rotating rod, 33, a downhill, 34, a discharge valve, 35, a stirring rod, 36, stirring blades, 4, a sealing feeding structure, 41, a feeding channel, 42, an extension ring, 43, a sealing cover, 44, a fixing bolt, 5, a water delivery butt joint structure, 51, a water tank, 52, a water delivery pipe, 53, a high-pressure pump, 54, a telescopic pipe, 55, a sealing pad, 56, a water outlet end, 6, a cleaning water supply structure, 61, a water spray pipe, 62, a spray nozzle, 63, a water inlet cavity, 64, a butt joint hose, 65, a rotating ring, 66, a threaded pipe, 7 and an observation window.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

Referring to fig. 1-6, a chemical reagent auxiliary agent emulsifier convenient to clean comprises an emulsifier 1 and an observation window 6, wherein the observation window 6 is fixedly arranged on the outer wall of the emulsifier 1, an emulsifying turnover cleaning structure 2 is arranged on the outer side of the emulsifier 1, the emulsifying turnover cleaning structure 2 comprises a bottom plate 21, a rotating shaft 25 and a hydraulic cylinder 27, the rotating shaft 25 is fixedly arranged on the outer wall of the emulsifier 1, a vertical plate 22 is rotatably connected on the outer side of the rotating shaft 25, the bottom plate 21 is fixedly arranged at the lower end of the vertical plate 22, a top plate 23 is fixedly arranged at the top end of the vertical plate 22, a rotating wheel 24 is fixedly connected on the rear side of the rotating shaft 25, a plurality of hydraulic cylinders 27 are fixedly arranged inside the top plate 23 and the bottom plate 21, the front ends of the hydraulic cylinders 27 are fixedly provided with extrusion blocks 26 which can be connected with a plurality of hydraulic cylinders 27 of a power supply, when the hydraulic cylinders 27 are retracted, the plurality of extrusion blocks 26 do not fix the emulsifying device 1 any more, the rotating shaft 25 can be driven to rotate by the rotating wheel 24, then the rotating shaft 25 can drive the emulsifying device 1 to turn over, so that the emulsifying device 1 is turned upside down, the front ends of the plurality of extrusion blocks 26 are movably connected with two sides of the emulsifying device 1, a cleaning water supply structure 6 is arranged in the emulsifying device 1, the cleaning water supply structure 6 comprises a water spray pipe 61, a water inlet cavity 63 and a butt joint hose 64, the water spray pipe 61 is fixedly communicated with the top end in the emulsifying device 1, a plurality of spray heads 62 are fixedly communicated with the lower part of the water spray pipe 61, one side of the water spray pipe 61 is fixedly communicated with a butt joint hose 64, a water inlet cavity 63 is arranged in the butt joint hose 64, a threaded pipe 66 is connected with the outer side of the butt joint hose 64 in a threaded manner, a rotating ring 65 is fixedly arranged on the outer side of the threaded pipe 66, a water delivery butt joint structure 5 is arranged in the vertical plate 22, the water delivery butt joint structure 5 comprises a water tank 51, a telescopic pipe 54 and a water outlet end 56, the telescopic pipe 54 is movably arranged in the vertical plate 22, the front end of the telescopic pipe 54 is fixedly communicated with the water outlet end 56, a sealing gasket 55 is fixedly arranged between the water outlet end 56 and the telescopic pipe 54, the sealing gasket 55 is made of rubber and can be tightly adhered to the end part of the telescopic pipe 54 to avoid water leakage, the other end of the telescopic pipe 54 is fixedly communicated with a water pipe 52, the end part of the water pipe 52 is fixedly communicated with a water tank 51, after the emulsifier 1 is turned upside down, a water outlet end 56 at the front end of the telescopic pipe 54 is inserted into a corresponding butt joint hose 64, a rotating ring 65 is screwed in the direction of the emulsifier 1, a threaded pipe 66 in the rotating ring 65 is meshed with threads on the outer side of the butt joint hose 64 to move inwards, the butt joint hose 64 is made of rubber, the front end is narrow and the rear side is wide, when the rotating ring 65 moves inwards, the wider butt joint hose 64 is extruded to extrude and fix the water outlet end 56, the water outlet end 56 is communicated with a water inlet cavity 63, starting a high-pressure pump 53 to convey clear water in a water tank 51 to the interior of the emulsifier 1 along a water pipe 62, then filling the interior of the emulsifier 1 with the clear water from bottom to top, driving a rotating rod 33 to rotate by a motor 31 again, stirring the clear water to finish omnibearing cleaning of the inner wall of the emulsifier 1, avoiding the condition of cleaning dead angles, wherein the water tank 51 is fixedly arranged on the ground far away from one side of a bottom plate 21, and the high-pressure pump 53 is fixedly arranged outside the water pipe 52;

Through can connect a plurality of pneumatic cylinders 27 of power supply, after the pneumatic cylinder 27 is retrieved, a plurality of extrusion piece 26 no longer fix the emulsifier 1, can drive axis of rotation 25 through runner 24 and rotate, then axis of rotation 25 can drive the emulsifier 1 upset, make the upper and lower upset of emulsifier 1, then after the emulsifier 1 is upside down, insert the inside of corresponding butt joint hose 64 with the play water end 56 of flexible pipe 54 front end, twist the rotation circle 65 to the direction of emulsifier 1, the screw thread pipe 66 of rotation circle 65 inside can with the screw thread meshing outside of butt joint hose 64 move inwards, butt joint hose 64 adopts rubber to the design is that the front end is narrow back side wide, when rotation circle 65 moves inwards, can extrude wider butt joint hose 64 and extrude the fixed with play water end 56, play water end 56 is linked together with intake water cavity 63, start high-pressure pump 53, carry the inside clear water of water tank 51 along raceway 62 water to the inside of emulsifier 1, then the inside of emulsifier 1 can fill up the inside of emulsifier 1 by the face down, can be again the motor 31, drive rotation pole 33 and the full of the inside of emulsifier 1, the all-round corner has been avoided the full of the clean and the clean up of the full-up structure of emulsion, the full-up to the clean the full-up condition of the emulsion, the wash-down reagent has been avoided the full-down, the clean-up condition has been washed the full-up condition of the clean reagent of the emulsion, and has been washed the full-washed the clean-up condition of the inner wall has been washed the full-washed, and has been washed the clean-up effect to the full-up condition.

Referring to fig. 1-6, an emulsifying stirring structure 3 is disposed in an emulsifier 1, the emulsifying stirring structure 3 includes a motor 31, a discharging slope 33 and a discharge valve 34, the motor 31 is fixedly mounted at the top end of the emulsifier 1, when the motor 31 is selected, a motor model meeting the use requirement can be adopted, an output shaft of the motor 31 is fixedly mounted with a rotating rod 32 through a speed reducer, the discharging slope 33 is fixedly mounted at the bottom end of the emulsifier 1, two sides of the rotating rod 32 are rotatably connected in the emulsifier 1 through bearings, a plurality of stirring blades 36 are fixedly mounted at the outer side of the rotating rod 32, after raw materials are placed in the emulsifier 1, the motor 31 is connected with a power source to start the motor 31, the rotating rod 32 is driven by the speed reducer to rotate, then the rotating stirring rod 35 can stir the raw materials in the emulsifier 1 at a high speed through the connected stirring blades 36 to form emulsifying operation, finally the discharge valve 34 is opened, emulsified liquid flows out of the discharging valve 34 along the discharging slope 34, the front ends of the plurality of the stirring blades 36 are fixedly mounted with the stirring rods 35, the discharging valve 34 are fixedly connected at the bottom end of the emulsifier 1, the water outlet end of the water pipe 56 is fixedly connected with the water outlet end of the water pipe 56, and the water outlet end of the water pipe 64 is movably connected with the water inlet pipe 52, and the water outlet end of the water pipe 52 is movably connected with the water inlet pipe 52.

Referring to fig. 1-6, a sealing feeding structure 4 is arranged on the outer wall of the emulsifier 1, the sealing feeding structure 4 comprises a feeding channel 41, a sealing cover 43 and a fixing bolt 44, the feeding channel 41 is fixedly arranged on the outer wall of the emulsifier 1, an extension ring 42 is fixedly connected to the outer side of the feeding channel 41, the sealing cover 43 is movably sleeved on the outer side of the extension ring 42, the sealing cover 43 can be buckled at the front end of the extension ring 42 on the outer side of the feeding channel 41, the inner side of the sealing cover 43 is made of latex to have a good sealing effect, the sealing cover 43 can be firmly fixed at the front end of the feeding channel 41 by screwing a plurality of fixing bolts 44 on the outer side, the feeding channel 41 can be opened at any time and then the effect of adding raw materials is achieved, the plurality of fixing bolts 44 are in threaded connection with the outer side of the sealing cover 43, and the front ends of the fixing bolts 44 are tightly attached to the outer wall of the extension ring 42;

Can detain the extension circle 42 front end in the feed channel 41 outside through sealed lid 43, sealed lid 43 inboard adopts latex to make sealed effect better, through screw up a plurality of fixing bolt 44 in the outside then make sealed lid 43 can firmly fix the front end at feed channel 41, can open feed channel 41 at any time then reach the effect of adding the raw materials, utilized can dismantle and reach sealed lid of effect, avoided the emulsion that rolls can flow out when emulsifying in inside and cause extravagant, reduced the use cost of convenient abluent chemical reagent auxiliary agent emulsifier.

Working principle:

Firstly, after raw materials are placed in an emulsifier 1, a power supply is connected with a motor 31, the motor 31 drives a rotating rod 32 to rotate through a speed reducer, then the rotating rod 32 drives an outside stirring rod 35 to rotate, the rotating stirring rod 35 can stir the raw materials in the emulsifier 1 at a high speed through a connected stirring blade 36 to form emulsification operation, finally, a discharge valve 34 is opened, and emulsified liquid flows out of the discharge valve 34 along a discharging slope 34;

Then, a plurality of hydraulic cylinders 27 of the power supply are connected, when the hydraulic cylinders 27 are retracted, the plurality of extrusion blocks 26 are not used for fixing the emulsifier 1, the rotating shaft 25 can be driven to rotate by the rotating wheel 24, and then the rotating shaft 25 can drive the emulsifier 1 to turn over, so that the emulsifier 1 is turned upside down;

Then after the emulsifier 1 is turned upside down, the water outlet end 56 at the front end of the telescopic pipe 54 is inserted into the corresponding butt joint hose 64, the rotating ring 65 is screwed in the direction of the emulsifier 1, the threaded pipe 66 in the rotating ring 65 is meshed with the threads on the outer side of the butt joint hose 64 to move inwards, the butt joint hose 64 is made of rubber, the front end is narrow, the rear side is wide, when the rotating ring 65 moves inwards, the wider butt joint hose 64 is extruded to extrude and fix the water outlet end 56, the water outlet end 56 is communicated with the water inlet cavity 63, the high-pressure pump 53 is started, clean water in the water tank 51 is conveyed into the emulsifier 1 along the water conveying pipe 62, then the interior of the emulsifier 1 is filled with clean water from bottom to top, at the moment, the motor 31 can be driven to rotate the rotating rod 33, and clean water stirring is carried out on the inner wall of the emulsifier 1 to complete omnibearing cleaning.

While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.

Claims (6)

1. The utility model provides a convenient abluent chemical reagent auxiliary agent emulsifier, includes emulsifier (1) and observation window (7), its characterized in that: the observation window (7) is fixedly arranged on the outer wall of the emulsifying device (1), the outer side of the emulsifying device (1) is provided with an emulsifying overturning cleaning structure (2), the emulsifying overturning cleaning structure (2) comprises a bottom plate (21), a rotating shaft (25) and a hydraulic cylinder (27), the rotating shaft (25) is fixedly arranged on the outer wall of the emulsifying device (1), a vertical plate (22) is rotatably connected on the outer side of the rotating shaft (25), the bottom plate (21) is fixedly arranged at the lower end of the vertical plate (22), top fixed mounting of riser (22) has roof (23), the rear side fixedly connected with runner (24) of axis of rotation (25), a plurality of pneumatic cylinder (27) fixed mounting is inside roof (23) and bottom plate (21), a plurality of the front end fixed mounting of pneumatic cylinder (27) has extrusion piece (26), a plurality of the front end of extrusion piece (26) links to each other with the both sides activity of emulsifier (1).

2. The conveniently cleaned chemical adjuvant emulsifier of claim 1 wherein: an emulsifying and stirring structure (3) is arranged in the emulsifying device (1);

The emulsifying and stirring structure (3) comprises a motor (31), a discharging slope (33) and a discharging valve (34);

The utility model discloses a stirring device for a material emulsifying machine, including motor (31), speed reducer, discharge valve (34), motor (31), stirring vane (36) are installed in the outside fixed mounting of motor (31), motor (31) top at emulsifier (1), motor (31) output shaft has dwang (32) through speed reducer fixed mounting, downhill (33) fixed mounting is in the inside bottom of emulsifier (1), the both sides of dwang (32) are passed through the bearing and are rotated the inside of connecting at emulsifier (1), the outside fixed mounting of dwang (32) has many stirring vane (36), a plurality of the front end fixed mounting of stirring vane (36) has puddler (35), discharge valve (34) fixed connection is in the lower extreme of emulsifier (1).

3. The conveniently cleaned chemical adjuvant emulsifier of claim 1 wherein: a cleaning water supply structure (6) is arranged in the emulsifier (1);

the cleaning water supply structure (6) comprises a water spray pipe (61), a water inlet cavity (63) and a butt joint hose (64);

The utility model discloses a water spray pipe, including spray pipe (61), screw pipe (66), rotary ring (65) are fixed in the inside top of emulsion ware (1), the fixed intercommunication of below of spray pipe (61) has many shower nozzles (62), the fixed intercommunication in one side of spray pipe (61) has docking hose (64), the inside of docking hose (64) is equipped with intake chamber (63), the outside threaded connection of docking hose (64) has screw pipe (66), the outside fixed mounting of screw pipe (66) has rotary ring (65).

4. The conveniently cleaned chemical adjuvant emulsifier of claim 1 wherein: a water delivery butt joint structure (5) is arranged in the vertical plate (22);

the water delivery butt joint structure (5) comprises a water tank (51), a telescopic pipe (54) and a water outlet end (56);

The telescopic pipe (54) is movably mounted in the vertical plate (22), the front end of the telescopic pipe (54) is fixedly connected with a water outlet end (56), a sealing gasket (55) is fixedly mounted between the water outlet end (56) and the telescopic pipe (54), a water pipe (52) is fixedly connected with the other end of the telescopic pipe (54), a water tank (51) is fixedly connected with the end part of the water pipe (52), the water tank (51) is fixedly mounted on the ground far away from one side of the bottom plate (21), and a high-pressure pump (53) is fixedly mounted outside the water pipe (52).

5. The conveniently cleaned chemical adjuvant emulsifying apparatus of claim 4 wherein: the front end of the water outlet end (56) is movably connected in the butt joint hose (64), the front end of the water outlet end (56) is communicated with the water inlet cavity (63), and the water delivery pipe (52) is movably communicated with the water spraying pipe (61).

6. The conveniently cleaned chemical adjuvant emulsifier of claim 1 wherein: the outer wall of the emulsifying device (1) is provided with a sealing feeding structure (4);

The sealing feeding structure (4) comprises a feeding channel (41), a sealing cover (43) and a fixing bolt (44);

The feeding channel (41) is fixedly arranged on the outer wall of the emulsifier (1), an extension ring (42) is fixedly connected to the outer side of the feeding channel (41), the sealing cover (43) is movably sleeved on the outer side of the extension ring (42), a plurality of fixing bolts (44) are in threaded connection on the outer side of the sealing cover (43), and the front ends of the fixing bolts (44) are tightly attached to the outer wall of the extension ring (42).