CN218008046U - Ice cream machine puffing device with puffing rate capable of being automatically adjusted - Google Patents

Abstract

The utility model discloses a but bulking rate automatically regulated's bulking device of ice-cream machine, outside great circle and inboard small circle, blade including the pump body, pump cover, driving motor, blade drive wheel, eccentric settings, the radial both ends of blade butt respectively the inner periphery of outside great circle, the blade with the blade drive wheel will the outside great circle is separated out two cavitys that the volume changes along with rotating, be equipped with feed port, discharge opening and inlet port on the pump cover. The puffing device has simple structure, small volume and convenient disassembly and washing, the puffing rate can be adjusted according to the size of the valve core and the rotating speed of the motor, and air and milk are fully puffed; the expansion rate of the ice cream can be effectively controlled, so that the produced ice cream has soft and smooth mouthfeel and is sweet but not greasy.

Description

Ice cream machine puffing device with puffing rate capable of being automatically adjusted

Technical Field

The utility model relates to an ice-cream machine technical field, concretely relates to but bulking device of ice-cream machine of bulking rate automatically regulated.

Background

With the improvement of living standard of the masses, the ice cream has become one of the most common sweetmeats in the market. The expansion rate has also been the subject of constant research to improve the mouthfeel of ice cream. The existing puffing pumps of ice cream machines comprise piston pumps, peristaltic pumps, gear pumps and the like, and although the concrete structures are different, the function of the puffing pumps is to mix the prepared ice cream raw material slurry with air and pressurize and convey the mixture into a freezing cylinder to realize puffing.

A spherical expansion pump is also used for expanding the ice cream, for example, chinese invention patent application (publication No. CN 111374213A) discloses a spherical expansion pump for an ice cream machine, which comprises a spherical pump, a clamping plate, an air inlet valve and the like, wherein a liquid inlet hole of the spherical pump is communicated with a milk tank to suck milk raw materials, the air inlet valve is connected to a liquid inlet channel of the liquid inlet hole to suck air, and a liquid outlet hole of the spherical pump is communicated with a liquid inlet of a freezing cylinder of the ice cream machine; although the puffing pump can adjust the puffing rate through the size of the air inlet and the rotating speed of the motor, the spherical rotor is inconvenient to process and install, and a cylinder cover and a cover body with larger volume are required to be matched.

Disclosure of Invention

The utility model aims at solving the problems in the prior art and providing an ice cream machine puffing device with the puffing rate capable of being automatically adjusted.

In order to achieve the purpose, the utility model adopts the technical proposal that:

an ice cream machine puffing device with an automatically adjustable puffing rate comprises a pump body and a pump cover, wherein one end of the pump body is connected with the pump cover, the other end of the pump body is connected with a driving motor, a stepped inner cavity is formed in one end, close to the pump cover, of the pump body, and a blade driving wheel is arranged in the stepped inner cavity; the stepped inner cavity comprises an outer side large circle and an inner side small circle which are eccentrically arranged, one end of the blade driving wheel is rotatably sleeved in the inner side small circle and is connected with the driving motor, the other end of the blade driving wheel is positioned in the outer side large circle, a radial mounting groove is formed in the end part of the blade driving wheel, blades are arranged in the mounting groove, two radial ends of each blade are respectively abutted against the inner periphery of the outer side large circle, and the blades and the blade driving wheel divide the outer side large circle into two cavities with the volumes alternately changed along with the rotation; the pump cover is provided with a feed hole and a discharge hole, the feed hole and the discharge hole are respectively communicated with one of the cavities correspondingly, the pump cover is further provided with an air inlet hole, and the air inlet hole is close to the feed hole and is communicated with the cavity communicated with the feed hole.

The ice cream puffing device can form two variable-volume cavities by matching the pump body, the pump cover, the blades and the blade driving wheels, completes feeding and air inlet operations through the change of pressure and volume in the cavities, and discharges the mixed and puffed ice cream, so that the puffing effect is good; and the change of the cavity can be adjusted through the rotating speed of the driving motor, so that the bulking effect is controlled, and the bulking rate of the slurry with different viscosities can be adjusted by controlling the operating speed of the motor through an electric control program.

The outer side large circle and the inner side small circle are eccentrically arranged, so that when the blade transmission wheel rotates, the volumes of two cavities divided by the blades can be changed along with the rotation, and the pressure in the cavities is changed along with the change, so that the circular operation of sucking and discharging is completed.

The blade transmission wheel has the function of rotary connection, and can also form a cavity together with the blade and the outer side great circle to change the volume.

The pump cover is used as an end cover to close the pump body, and components related to feeding, air inlet and discharging can be arranged and connected on the other hand.

Further, the blade drive wheel is cylindrical structure, the blade drive wheel is kept away from the one end of mounting groove is equipped with the spread groove that is equipped with the indent, the terminal surface is equipped with the block arch, the spread groove be used for connect with the impeller transmission shaft that driving motor connects.

The blade transmission wheel is simple and practical in structure and can be rotatably installed in the inner small circle, and the clamping structure at the inner end part can be abutted against the step part on the inner periphery of the pump body and is provided with the lip-shaped sealing ring, so that the effect of rotary sealing is achieved.

The two ends of the blade driving wheel are respectively provided with the mounting grooves and the connecting grooves which just can be respectively connected with the blades and the impeller transmission shaft, so that the rotation of the impeller transmission shaft can be transmitted to the blades.

Furthermore, the blade includes the slip cup joint portion at middle part to and the symmetry sets up the butt portion at slip cup joint portion both ends, slip cup joint portion installs in the mounting groove, butt portion butt the inner periphery of outside great circle.

The blade can rotate along with the blade driving wheel and can move relative to the blade, and two ends of the blade can always abut against the inner periphery of the outer large circle, so that the two cavities are ensured.

Furthermore, the middle part of the sliding sleeve joint part is of an M-shaped structure, and the cross section of the abutting joint part is triangular and the end part of the abutting joint part is rounded. The sliding sleeve joint part with the structure has certain radial deformability, and the abutting part can be always contacted with the inner circumference of the outer great circle in the reciprocating motion process. The end part of the abutting part is designed into a round angle, so that the abutting part is convenient to be matched with the inner circumference of the outer great circle to form an inner tangent structure, and the rotating motion of the abutting part is also facilitated.

Furthermore, the end face, back to the pump body, of the pump cover is respectively provided with a discharge connecting hole and a feed connecting hole, the discharge connecting hole is communicated with the discharge hole and is connected with a discharge pipe, and the feed connecting hole is communicated with the feed hole and is connected with a feed pipe.

Furthermore, the interior of the pump cover is also provided with an air inlet connecting hole communicated with the air inlet hole, and the air inlet connecting hole is led out from the side wall of the pump cover and is connected with an air inlet valve. The installation that can utilize the top space of pump cover carries out the admission valve reduces the pipe connection quantity of pump cover terminal surface, optimizes the structural layout of pump cover.

Furthermore, oblique arc-shaped grooves are formed in the end faces, on the inner side, of the pump cover, of the feeding hole and the discharging hole. The arrangement of the arc-shaped groove can increase the area of the hole outlet on one hand and can play a guiding role on the other hand.

Furthermore, the pump body with the pump cover passes through a plurality of connecting piece fixed connection, the pump body with still be equipped with the seal groove on the fitting end face of pump cover, be equipped with the sealing washer in the seal groove. The connection is convenient and the sealing effect is better.

Further, a discharge pipe plug-in card is arranged on the pump cover and is inserted into the discharge connecting hole and clamps the end part of the discharge pipe; the discharging pipe with the inlet pipe is the return bend respectively, the other end of inlet pipe is arranged in the material jar, the other end of discharging pipe passes the material jar is connected to freezing jar, and is equipped with pressure relief ring and sealing ring in the junction.

In the arrangement, the raw materials in the material cylinder can be conveyed into the cavity through the feeding pipe, and the materials expanded in the cavity can also be directly discharged to the freezing cylinder through the discharging pipe without mutual interference; the sealing ring can play a sealing role, raw materials in the material cylinder are prevented from directly entering the freezing cylinder, the pressure relief ring is arranged on a pipeline above the sealing ring, and the pressure in the discharge pipe can be adjusted.

Further, the periphery of the pump body is of a stepped cylindrical structure, the end part of the pump body is sleeved in a shaft seat cushion block, the shaft seat cushion block is connected with a motor mounting seat, and the motor mounting seat is connected with a driving motor. The end part of the driving motor is connected with the impeller transmission shaft, the impeller transmission shaft penetrates through the shaft seat cushion block and extends into the pump body to be connected with the blade transmission wheel, and a shaft sleeve can be further arranged between the impeller transmission shaft and the shaft seat cushion block.

Through the arrangement, the driving motor can be connected with the pump body, and the shaft seat cushion block or the motor mounting seat can be conveniently utilized to integrally mount and fix the material cylinder.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the puffing device of the ice cream machine has the advantages of simple structure, small volume, uniform flow and convenient disassembly and washing, and is suitable for the ice cream machine which needs frequent starting; 2. the expansion rate can be adjusted according to the size of a valve core of the air inlet valve and the rotating speed of the motor, air and milk slurry are fully expanded, the expansion rate of the ice cream can be effectively controlled, the produced ice cream has soft and smooth mouthfeel and is sweet but not greasy/3, and the ice cream expansion device can use a single blade; 4. this popped device of ice cream passes through the pump body, the pump cover, the blade with the cooperation setting of blade drive wheel can form two variable volumetric cavitys, through pressure and volumetric change in the cavity, accomplishes the feeding, admits air the operation to make it mix and discharge after popped, popped effect is better.

Drawings

Fig. 1 is a schematic view of the overall structure of an ice cream maker puffing device with an automatically adjustable puffing rate;

FIG. 2 is a schematic view of a cross-sectional structure of a puffing apparatus of an ice cream maker with an automatically adjustable puffing rate;

FIG. 3 is a schematic sectional view of the pump body according to the present invention;

FIG. 4 is a schematic view of the end face structure of the pump body of the present invention;

fig. 5 is a schematic perspective view of the blade transmission wheel of the present invention;

fig. 6 is a schematic perspective view of the blade transmission wheel of the present invention;

fig. 7 is a schematic perspective view of the blade of the present invention;

fig. 8 is a schematic view of a three-dimensional structure of the pump cover of the present invention;

fig. 9 is a schematic view of a three-dimensional structure of the pump cover of the present invention;

fig. 10 is a schematic view of a partial cross-sectional structure of the pump cover of the present invention;

FIG. 11 is a schematic view of the puffing apparatus of the ice cream maker of the present invention mounted on a material tank;

in the figure: 1. a drive motor; 2. a shaft seat nut; 3. a motor mounting base; 4. a shaft seat cushion block; 5. a pump body; 501. the outer side is big round; 5011. a first cavity; 5012. a second cavity; 502. the inner side is small; 503. a sealing groove; 6. a pump cover; 601. a discharging connecting hole; 602. a feeding connection hole; 603. an air inlet connecting hole; 7. a discharge pipe; 8. a pressure relief ring; 9. a seal ring; 10. a feeding pipe; 11. a blade; 1101. a sliding sleeve joint part; 1102. an abutting portion; 12. a blade transmission wheel; 1201. mounting grooves; 1202. connecting grooves; 1203. clamping the protrusion; 13. a lip-shaped seal ring; 14. an impeller drive shaft; 15. inserting a card into the discharge pipe; 16. an intake valve; 17. a check valve; 18. a discharge hole; 19. an air inlet; 20. a feed port; 21. a connecting member; 22. an arc-shaped groove.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The first embodiment is as follows:

as shown in fig. 1 to 10, an ice cream maker puffing device with an automatically adjustable puffing rate comprises a pump body 5 and a pump cover 6, wherein one end of the pump body 5 is connected with the pump cover 6, the other end of the pump body is connected with a driving motor 1, a stepped inner cavity is arranged at one end of the pump body 5 close to the pump cover 6, and a blade driving wheel 12 is arranged in the stepped inner cavity; the stepped inner cavity comprises an outer side large circle 501 and an inner side small circle 502 which are eccentrically arranged, one end of the blade transmission wheel 12 is rotatably sleeved in the inner side small circle 502 and is connected with the driving motor 1, the other end of the blade transmission wheel 12 is positioned in the outer side large circle 501, a radial installation groove 1201 is formed in the end part of the blade transmission wheel, a blade 11 is arranged in the installation groove 1201, two radial ends of the blade 11 are respectively abutted against the inner periphery of the outer side large circle 501, and the blade 11 and the blade transmission wheel 12 divide the outer side large circle 501 into two cavities with the volume which is alternately changed along with the rotation, namely a first cavity 5011 and a second cavity 5012; the pump cover 6 is provided with a feed hole 20 and a discharge hole 18, the feed hole 20 and the discharge hole 18 are respectively communicated with one of the cavities correspondingly, the pump cover 6 is further provided with an air inlet hole 19, and the air inlet hole 19 is close to the feed hole 20 and is communicated with the cavity communicated with the feed hole 20.

The ice cream puffing device can form two cavities with variable volumes by matching the pump body 5, the pump cover 6, the blades 11 and the blade driving wheels 12, finishes feeding and air inlet operations by changing the pressure and the volume in the cavities, and discharges the mixed and puffed ice cream, and has better puffing effect; and the change of the cavity can be adjusted through the rotating speed of the driving motor, so that the bulking effect is controlled, and the bulking rate of the slurry with different viscosities can be adjusted by controlling the operating speed of the motor through an electric control program.

The outer large circle 501 and the inner small circle 502 are eccentrically arranged, so that when the blade transmission wheel 12 rotates, the volume of two cavities divided by the blades 11 changes along with the rotation, and the pressure in the cavities changes along with the rotation, so that the circular operation of material suction and discharge is completed.

The blade transmission wheel 12 not only plays a role in rotary connection, but also can form a cavity together with the blade 11 and the outer great circle 501 to play a role in changing the volume.

The pump cover 6 serves as an end cap, which closes the pump body 5, on the one hand, and on the other hand, allows the arrangement and connection of components relating to the feed, intake and discharge.

Further, the blade transmission wheel 12 is of a cylindrical structure, one end of the blade transmission wheel 12, which is far away from the mounting groove 1201, is provided with a concave connecting groove 1202, the end surface of the blade transmission wheel is provided with a clamping protrusion 1203, and the connecting groove 1202 is used for connecting an impeller transmission shaft 14 connected with the driving motor 1.

The blade driving wheel 12 is simple and practical in structure, can be rotatably installed in the inner small circle 502, and the clamping bulge 1203 at the inner end part just can abut against the step on the inner periphery of the pump body 5 and is provided with the lip-shaped sealing ring 13, so that the effect of rotary sealing is achieved.

The mounting groove 1201 and the connecting groove 1202 are respectively formed at both ends of the blade transmission wheel 12, and the blade 11 and the impeller transmission shaft 14 can be just connected, so that the rotation of the impeller transmission shaft 14 can be transmitted to the blade 11.

Further, the blade 11 includes a sliding sleeve portion 1101 at the middle portion, and abutting portions 1102 symmetrically disposed at two ends of the sliding sleeve portion 1101, the sliding sleeve portion 1101 is installed in the installation groove 1201, and the abutting portions 1102 respectively abut against the inner circumference of the outer great circle 501.

With such an arrangement, the blade 11 can rotate along with the blade transmission wheel 12, the blade transmission wheel 12 and the blade 11 can move relatively, and two ends of the blade 11 can always abut against the inner circumference of the outer great circle 501, so as to ensure the existence of two cavities.

Further, the middle part of the sliding sleeve part 1101 is of an M-shaped structure, and the cross section of the abutting part 1102 is triangular and the end part is rounded. The sliding sleeve joint part with the structure has certain radial deformability, and the abutting part can be always contacted with the inner circumference of the outer great circle in the reciprocating motion process. The end of the abutting portion 1102 is rounded to facilitate the inner circumference of the outer great circle 501 to form an inner tangent structure, which is also beneficial to the rotation movement.

Furthermore, the end surface of the pump cover 6 facing away from the pump body 5 is respectively provided with a discharge connection hole 601 and a feed connection hole 602, the discharge connection hole 601 is communicated with the discharge hole 18 and connected with a discharge pipe 7, and the feed connection hole 602 is communicated with the feed hole 20 and connected with a feed pipe 10.

Further, an air inlet connecting hole 603 communicated with the air inlet 19 is further formed in the pump cover 6, the air inlet connecting hole 603 is led out from the upper side wall of the pump cover 6 and is connected with an air inlet valve 16, and a check valve 17 is further arranged at the inner end of the air inlet valve 16. The structure can utilize the space above the pump cover 6 to install the air inlet valve 16, reduce the number of pipeline connections on the end surface of the pump cover, and optimize the structural layout of the pump cover.

The air inlet quantity entering the pump body 5 is adjusted by changing different valve cores of the air inlet valve 16, so that the expansion rate of the ice cream is adjusted.

Furthermore, the feed hole 20 and the discharge hole 18 are further provided with an inclined arc-shaped groove 22 at the end surface of the inner side of the pump cover 6. The arc-shaped slot 22 can increase the area of the outlet on one hand and can also play a guiding role on the other hand.

Further, the pump body 5 and the pump cover 6 are fixedly connected through a plurality of connecting pieces 21, the connecting pieces 21 are connecting pieces such as bolts, connecting rods and nuts, a sealing groove 503 is further formed in the matching end face of the pump body 5 and the pump cover 6, and a sealing ring is arranged in the sealing groove 503. The connection is convenient and the sealing effect is better.

Further, a discharge pipe plug-in card 15 is further arranged on the pump cover 6, and the discharge pipe plug-in card 15 is inserted into the discharge connecting hole 601 and clamps the end of the discharge pipe 7; discharging pipe 7 with inlet pipe 10 is the return bend respectively, the other end of inlet pipe 10 is arranged in the material jar, the other end of discharging pipe 7 passes the material jar is connected to freezing jar, and is equipped with pressure relief ring 8 and sealing ring 9 in the junction.

According to the arrangement, the raw materials in the material cylinder can be conveyed to the cavity through the feeding pipe 10, and the materials expanded in the cavity can also be directly discharged to the freezing cylinder through the discharging pipe 7, so that the raw materials and the materials are not interfered with each other; sealing ring 9 can play sealed effect, avoids the raw materials in the material jar directly to get into the freezing jar.

The pressure relief ring 8 is arranged at the joint of the discharge pipe 7 and the material cylinder, and can adjust the pressure in the discharge pipe 7. When the pressure in the discharge pipe 7 is greater than 0.12MPa, the pressure relief ring 8 starts to work, and the ice cream raw material in the pump body 5 is directly discharged to the material cylinder instead of being injected into the freezing cylinder, so that the pressure in the pump body is kept within the range of 0.1-0.12 MPa.

The second embodiment:

this embodiment provides a mode that the driving motor is connected with the pump body.

As shown in fig. 11, the periphery of the pump body 5 is of a stepped cylindrical structure, the end of the pump body 5 is sleeved in an axle seat cushion block 4, the axle seat cushion block 4 is connected with a motor mounting seat 3 through a connecting piece, the end of the axle seat cushion block 4 is connected with an axle seat nut 2 on the inner side of the motor mounting seat 3, and the motor mounting seat 3 is connected and installed with a driving motor 1. The end part of the driving motor 1 is connected with the impeller transmission shaft 14, the impeller transmission shaft 14 penetrates through the shaft seat cushion block 4 and extends into the pump body 5 to be connected with the blade transmission wheel 12, and a shaft sleeve can be arranged between the impeller transmission shaft 14 and the shaft seat cushion block 4.

Through the arrangement, the driving motor 1 and the pump body 5 can be connected together, and the shaft seat cushion block 4 and the motor mounting seat 3 can be conveniently utilized to integrally mount and fix the whole body on the material cylinder.

One working mode of the puffing device is as follows: under the action of the driving motor 1, the impeller transmission shaft 14 drives the blade transmission wheel 12 and the blade 11 to rotate, when the volume of the first cavity 5011 begins to increase, negative pressure exists in the cavity, when the volume continues to increase, the feed hole 20 is communicated with the first cavity 5011 to suck ice cream raw material slurry, when the volume of the first cavity 5011 increases again, the air inlet 19 is communicated with the first cavity 5011 to suck air, and along with the rotation of the blade 11, the slurry sucked by the first cavity 5011 begins to be compressed after air suction is completed, and the volume begins to decrease again.

At this time, the volume of the second cavity 5012 begins to decrease, the pressure of the slurry increases, when the volume of the second cavity 5012 continues to decrease, the discharge hole 18 is communicated with the second cavity 5012 to discharge the high-pressure slurry to the freezing cylinder, when the volume of the second cavity 5012 reaches or approaches to the minimum state, the discharge hole 18 is disconnected from the second cavity 5012 to stop discharging the slurry, and the volume of the second cavity 5012 begins to increase again after the high-pressure slurry is discharged, so that the slurry and air are sucked and discharged circularly. During the volume compression of the second cavity 5012, the ice cream raw material slurry and air are fully expanded in the pump 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An ice cream machine puffing device with an automatic puffing rate adjusting function comprises a pump body and a pump cover, and is characterized in that one end of the pump body is connected with the pump cover, the other end of the pump body is connected with a driving motor, a stepped inner cavity is formed in one end, close to the pump cover, of the pump body, and a blade driving wheel is arranged in the stepped inner cavity; the stepped inner cavity comprises an outer side large circle and an inner side small circle which are eccentrically arranged, one end of the blade driving wheel is rotatably sleeved in the inner side small circle and is connected with the driving motor, the other end of the blade driving wheel is positioned in the outer side large circle, a radial mounting groove is formed in the end part of the blade driving wheel, blades are arranged in the mounting groove, two radial ends of each blade are respectively abutted against the inner periphery of the outer side large circle, and the blades and the blade driving wheel divide the outer side large circle into two cavities with the volumes changing alternately along with the rotation; the pump cover is provided with a feed hole and a discharge hole, the feed hole and the discharge hole are respectively communicated with one of the cavities correspondingly, the pump cover is further provided with an air inlet hole, and the air inlet hole is close to the feed hole and is communicated with the cavity communicated with the feed hole.

2. The ice cream machine puffing device with the puffing rate capable of being automatically adjusted according to claim 1, wherein the blade driving wheel is of a cylindrical structure, one end of the blade driving wheel, which is far away from the mounting groove, is provided with a concave connecting groove, the end surface of the blade driving wheel is provided with a clamping protrusion, and the connecting groove is used for being connected with an impeller transmission shaft connected with the driving motor.

3. The ice cream machine puffing device with the puffing rate capable of being automatically adjusted according to claim 1, wherein the blades comprise sliding sleeve portions in the middle and abutting portions symmetrically arranged at two ends of the sliding sleeve portions, the sliding sleeve portions are installed in the installation grooves, and the abutting portions abut against the inner periphery of the outer great circle.

4. An ice cream maker puffing apparatus according to claim 3, wherein the sliding sleeve portion has an M-shaped middle portion, and the abutting portion has a triangular cross section and rounded ends.

5. An ice cream maker puffing device with automatically adjustable puffing rate according to claim 1, wherein a discharging connecting hole and a feeding connecting hole are respectively formed in the end face of the pump cover facing away from the pump body, the discharging connecting hole is communicated with the discharging hole and connected with a discharging pipe, and the feeding connecting hole is communicated with the feeding hole and connected with a feeding pipe.

6. An ice cream machine puffing device with automatically adjustable puffing rate according to claim 1, characterized in that an air inlet connecting hole communicated with the air inlet hole is further formed inside the pump cover, and the air inlet connecting hole is led out from the side wall of the pump cover and is connected with an air inlet valve.

7. An ice cream machine puffing device with automatically adjustable puffing rate according to claim 1, characterized in that the inlet hole and the outlet hole are further provided with oblique arc-shaped grooves at the inner side end face of the pump cover.

8. The ice cream machine puffing device with the puffing rate capable of being automatically adjusted according to claim 1, wherein the pump body is fixedly connected with the pump cover through a plurality of connecting pieces, a sealing groove is further formed in the end face, which is matched with the pump cover, of the pump body, and a sealing ring is arranged in the sealing groove.

9. An ice cream machine puffing device with automatically adjustable puffing rate according to claim 5, wherein a discharging pipe inserting card is further arranged on the pump cover, is inserted into the discharging connecting hole and clamps the end of the discharging pipe; the discharging pipe with the inlet pipe is the return bend respectively, the other end of inlet pipe is arranged in expecting the jar, the other end of discharging pipe passes expect that the jar is connected to the freezing jar, and is equipped with pressure release ring and sealing ring in the junction.

10. The ice cream machine puffing device with the puffing rate capable of being automatically adjusted according to claim 1, wherein the outer periphery of the pump body is of a stepped cylindrical structure, the end portion of the pump body is sleeved in an axle seat cushion block, a motor mounting seat is connected to the axle seat cushion block, and the motor mounting seat is connected to the driving motor.

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