Improved air pump for conveying materials of ice cream machine

Abstract

The invention relates to the related technical field of diaphragm pumps, and discloses an improved air pump for material conveying of an ice cream machine, the improved air pump comprises a diaphragm pump main body, pump bodies are arranged on the two sides of the diaphragm pump main body respectively, pump covers are installed on the sides, away from each other, of the two pump bodies respectively, and diaphragms are arranged between the pump bodies and the pump covers; a diaphragm chamber and a first air cavity are formed in the pump body and the pump cover, and a sealing assembly is arranged on the outer wall of a diaphragm. The clamping and limiting effects on the diaphragm can be kept through the multiple pairs of arc-shaped rubber parts, and the gap between the diaphragm and the annular frame is prevented from being enlarged in the moving process of the diaphragm; by reducing the distance between the arc-shaped rubber part on one side and one end of the annular frame, the influence on the moving and unfolding degree of the diaphragm is reduced; and the distance between the arc-shaped rubber part on the other side and one end of the annular frame is increased, so that adjustment can be performed according to the movement condition of the diaphragm, and the clamping and fixing effects of the arc-shaped rubber parts on the diaphragm are kept.

Description

Technical Field

[0001] The present invention belongs to the technical field related to diaphragm pumps, and more specifically, particularly relates to an improved air pump used for conveying materials in an ice cream machine. Background Art

[0002] An ice cream machine is a machine used to make ice cream. It is a machine that can mix milk powder, ice cubes, and fruits to make delicious summer desserts. Ice cream can also be made with milk slurry. The diaphragm pump inside the machine can deliver the finished ice cream to the output port of the machine. The diaphragm pump is a type of air pump. Its biggest feature is that it can achieve liquid transportation by compressing and expanding the diaphragm. This pump usually consists of two diaphragms, which will swell and deflate alternately on both sides of the pump to complete the suction and transportation of the fluid. If the diaphragm pump has two inlets, it can even complete the separate or common transportation of two fluids at the same time. Due to its unique working principle, the diaphragm pump is widely used in many fields. For example, in the chemical industry, the diaphragm pump can be used to transport corrosive liquids, or in the food industry to transport liquid foods. In addition, the diaphragm pump can also be used to transport viscous liquids. However, the diaphragm pump in the prior art has the following defects: In the prior art, the improved air pump for conveying materials to the ice cream machine usually adopts a diaphragm pump for conveying materials to the ice cream machine. The diaphragm pump utilizes the compression and expansion of the diaphragm to realize liquid conveying. Since the diaphragm needs to move continuously, after a long period of operation, a certain amount of gap may be generated between the diaphragm and the pump body, and the size of this gap will expand synchronously with the growth of time, which will eventually affect the sealing of the improved air pump, thereby affecting the use of the improved air pump.

[0003] In the prior art, the sealing structure between the diaphragm and the pump body in the improved air pump for conveying materials in an ice cream machine is relatively simple, and cannot perform elastic buffering according to the compression or expansion of the diaphragm, so that the sealing effect of the sealing assembly is easily reduced during the continuous movement of the diaphragm, thereby reducing the sealing performance between the diaphragm and the pump body, affecting the use of the improved air pump; In the prior art, in order to improve the sealing between the diaphragm and the pump body, the sealing assembly in the improved air pump for conveying materials in an ice cream machine usually utilizes the sealing assembly to clamp and limit the diaphragm; however, when the sealing assembly clamps and limits the diaphragm, the clamping mechanism cannot be changed according to the movement of the diaphragm, which affects the degree of compression or expansion of the diaphragm, thereby reducing the efficiency of material conveying.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and an improved air pump for material transportation of an ice cream machine is provided, in order to achieve a more practical and valuable purpose. Summary of the invention

[0005] The present invention provides an improved air pump for conveying materials in an ice cream machine, which is used to overcome the above-mentioned defects in the prior art.

[0006] The purpose and effect of the improved air pump for conveying materials in an ice cream machine of the present invention are achieved by the following specific technical means: An improved air pump for conveying materials in an ice cream machine comprises a diaphragm pump body, a pump body is fixedly provided on both sides of the diaphragm pump body, a pump cover is installed on the side of the two pump bodies away from each other, a diaphragm is provided between the pump body and the pump cover, a diaphragm chamber and a first air cavity are separated by the diaphragm between the inside of the pump body and the inside of the pump cover, a first U-shaped tube is fixedly connected between the lower sides of the two pump covers, a second U-shaped tube is fixedly connected between the upper sides of the two pump covers, and a sealing component is provided on the outer wall of the diaphragm; the sealing component comprises an annular frame A plurality of pairs of first annular protrusions are provided at intervals on both sides of the outside of the annular frame, an extension portion is provided on the outer wall of the diaphragm, a first annular rubber block is provided between the outer wall of the extension portion and the inner wall of the annular frame, a second annular rubber block is provided on both side walls of the inner side of the annular frame, and a plurality of pairs of protrusions are provided at intervals on both sides of the diaphragm, a telescopic seat is rotatably provided at each end of the annular frame, a telescopic block is slidably provided inside the telescopic seat, a connecting block is rotatably provided at one end of the telescopic block, an arc-shaped plate is fixedly provided at one end of the connecting block, and an arc-shaped rubber piece is slidably provided inside the arc-shaped plate.

[0007] A further technical solution is that a hollow elastic member is connected between one side of the arc-shaped rubber member and the inside of the arc-shaped plate, the other side of the arc-shaped rubber member is in extrusion contact with the diaphragm, the two ends of the first U-shaped tube are respectively connected to the two diaphragm chambers, the two ends of the second U-shaped tube are respectively connected to the two diaphragm chambers, the annular frame is fixed between the pump body and the pump cover, the two second annular rubber blocks are located on both sides of the diaphragm, and each of the protrusions is located between one side of the diaphragm and one side of the second annular rubber block.

[0008] A further technical solution is that an avoidance groove is respectively provided at both ends of the annular frame, one end of the telescopic seat is rotatably connected in the avoidance groove, a first movable plate is slidably provided inside the telescopic seat, a push rod is fixedly provided on one side of the first movable plate, an arc-shaped slide groove is provided on one side of the avoidance groove, one end of the push rod extends into the arc-shaped slide groove, one end of the push rod is in sliding contact with the inner wall of the arc-shaped slide groove, a guide block is fixedly provided on one side of the interior of the arc-shaped slide groove, one end of the push rod is in sliding contact with one side of the guide block, and a first spring is connected between one side of the first movable plate and the interior of the telescopic seat.

[0009] According to a further technical solution, a first connecting channel is provided inside the telescopic block, one end of the first connecting channel is connected to the interior of the telescopic seat, and the other end of the first connecting channel is connected to the interior of the hollow elastic member and a telescopic connecting pipe is provided.

[0010] A further technical solution is that an arc-shaped sliding block is provided at one end of the arc-shaped slide groove, and a hydraulic cavity is provided in each of the two ends of the annular frame. The hydraulic cavity is located on one side of the avoidance groove, and a second movable plate is slidably provided inside the hydraulic cavity. One end of the arc-shaped sliding block is in contact with one side of the second movable plate, and the other end of the arc-shaped sliding block is fixedly connected to one end of the push rod.

[0011] According to a further technical solution, the interiors of each pair of the hydraulic chambers are interconnected and provided with a second connecting passage, and a second spring is connected between one side of the second movable plate and one side of the interior of the hydraulic chamber.

[0012] A further technical solution is that a pair of guide frames are fixedly provided at both ends of the annular frame, each pair of guide frames is located on both sides of the telescopic seat, and a movable rod is provided on both sides of the telescopic seat, one end of the movable rod is fixedly connected to the telescopic block, one end of the movable rod is in sliding contact with the telescopic seat, and the other end of the movable rod slides in the guide frame.

[0013] According to a further technical solution, the distance between the middle of the guide frame and the rotation point of the telescopic seat is greater than the distance between one end of the guide frame and the rotation point of the telescopic seat, and the distance between the middle of the guide frame and the rotation point of the telescopic seat is less than the distance between the other end of the guide frame and the rotation point of the telescopic seat.

[0014] A further technical solution is that a stepper motor is installed on one side of the diaphragm pump body, an eccentric wheel is provided at the output end of the stepper motor, a piston plate is provided for horizontal sliding inside the diaphragm pump body, two second air chambers are separated by the piston plate inside the diaphragm pump body, and a pair of through openings are provided for the two second air chambers respectively connected to the two first air chambers, a connecting plate is connected between the eccentric wheel and the piston plate, one end of the connecting plate is rotatably connected to one side of the eccentric wheel, and the other end of the connecting plate is rotatably connected to one side of the piston plate, a connecting rod is provided for horizontal sliding inside the piston plate, and a pair of mounting plates are provided on the outer walls at both ends of the connecting rod, each pair of mounting plates is located on both sides of the diaphragm, and the outer wall of the connecting rod is in sliding contact with the piston plate.

[0015] A further technical solution is that a first fixing seat is fixedly provided inside each of the two ends of the first U-shaped tube, a first through hole is provided in the middle of the first fixing seat, and a first limiting ball is provided on the upper side of the first through hole; a second fixing seat is fixedly provided inside each of the two ends of the second U-shaped tube, a second through hole is provided in the middle of the second fixing seat, and a second limiting ball is provided on the upper side of the second through hole; two mounting blocks are symmetrically fixedly provided on the lower side of the first U-shaped tube, a feed pipe is provided in the middle of the lower part of the first U-shaped tube, and a discharge pipe is provided in the middle of the upper part of the second U-shaped tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The improved air pump for conveying materials in an ice cream machine of the present invention has a first annular protrusion and a convex portion, and utilizes a plurality of pairs of first annular protrusions to be located between the two sides of the outside of the annular frame and the pump body and the pump cover, thereby performing multiple sealing actions on the outside of the annular frame. A plurality of pairs of convex portions are then utilized to be located between the two sides of the diaphragm and the side where two second annular rubber blocks are close to each other, thereby performing multiple sealing actions between the annular frame and the diaphragm, so that a double sealing action is achieved between the inside and the outside of the annular frame through a plurality of pairs of first annular protrusions and a plurality of pairs of convex portions, which is beneficial to prevent the material in the diaphragm chamber from entering the first air cavity. Through the arrangement of the extension portion, the first annular rubber block, and the second annular rubber block, the two second annular rubber blocks limit the inner wall of the extension portion, and cooperate with the first annular rubber block to be located between the extension portion and the inner wall of the annular frame, thereby performing a double limiting action on the inner wall and the outer wall of the extension portion, so that the diaphragm is limited in the annular frame. Furthermore, the first annular rubber block and the second annular rubber block are elastic and can perform elastic buffering and limiting functions in the process of continuous movement of the diaphragm, thereby maintaining the sealing effect on the diaphragm.

[0017] The improved air pump for conveying materials in an ice cream machine of the present invention is provided with a push rod, a first movable plate, a first connecting channel, a telescopic connecting pipe, a hollow elastic member, an arc-shaped rubber member, and a guide block. The movement of the diaphragm pushes the telescopic seat and the telescopic block located on one side of the diaphragm chamber to rotate outward. The rotation of the telescopic seat drives the push rod to rotate, so that one end of the push rod slides onto the guide block, and the guide block is used to guide the push rod. The push rod and the first movable plate are slid. The first movable plate slides to allow the liquid in the telescopic seat to enter the hollow elastic member through the first connecting channel and the telescopic connecting pipe. The hollow elastic member expands to squeeze the arc-shaped rubber member, thereby increasing the squeezing degree between the arc-shaped rubber member and the diaphragm. Then, through the arrangement of the arc-shaped slider, the hydraulic cavity, the second movable plate, and the second connecting channel, the push rod located on one side of the diaphragm chamber moves toward the guide block, thereby pushing the arc-shaped slider to slide in an arc shape in the annular frame. The sliding of the arc-shaped slider pushes the second movable plate to move upward. The second movable plate moves upward to allow the solution in the hydraulic cavity located on one side of the diaphragm chamber to enter the hydraulic cavity located on one side of the first air cavity through the second connecting channel. The second movable plate located on one side of the first air cavity moves downward, and the downward movement of the second movable plate pushes the arc-shaped slider located on one side of the first air cavity to slide in an arc shape, thereby pushing the telescopic seat and telescopic block located on one side of the first air cavity to rotate inward, so as to utilize the diaphragm chamber and several pairs of arc-shaped rubber parts in the first air cavity to maintain the clamping and limiting effect on the diaphragm, thereby avoiding the expansion of the gap between the diaphragm and the annular frame during the movement of the diaphragm.

[0018] The improved air pump for conveying materials of an ice cream machine of the present invention is provided. Through the arrangement of a guide frame and a movable rod, a telescopic seat and a telescopic block located on one side of a diaphragm chamber rotate outwardly. The distance between the middle of the guide frame and the rotating position of the telescopic seat is greater than the distance between one end of the guide frame and the rotating position of the telescopic seat. The telescopic seat rotates outwardly to drive the movable rod to move, so that one end of the movable rod slides from the middle of the guide frame to one end of the guide frame, thereby the other end of the movable rod slides on the telescopic seat under the guidance of the guide frame, and the other end of the movable rod drives the telescopic block to move close to the first movable plate, thereby further squeezing the solution in the telescopic seat and increasing the squeezing degree of the hollow elastic member on the arc-shaped rubber member. The telescopic block slides in the telescopic seat, and the sliding of the telescopic block drives the connecting block, the arc plate, the hollow elastic member, and the arc-shaped rubber member to move, thereby reducing the distance between the arc-shaped rubber member and one end of the annular frame, reducing the degree of affecting the movement and expansion of the diaphragm, and avoiding affecting the efficiency of material conveying. Then, the telescopic seat and the telescopic block located on one side of the first air cavity are rotated inwardly, and the distance between the middle part of the guide frame and the rotation point of the telescopic seat is smaller than the distance between the other end of the guide frame and the rotation point of the telescopic seat. The telescopic seat rotates inwardly to drive the movable rod to move, so that one end of the movable rod slides from the middle part of the guide frame to the other end of the guide frame, so that under the guidance of the guide frame, the other end of the movable rod slides on the telescopic seat, and the other end of the movable rod drives the telescopic block to move away from the first movable plate. The movement of the telescopic block drives the connecting block, the arc plate, the hollow elastic part, and the arc rubber part to move, thereby expanding the distance between the arc rubber part and one end of the annular frame, so as to maintain the diaphragm chamber and the first air cavity. Several pairs of arc rubber parts have a clamping and limiting effect on the diaphragm, which can avoid affecting the degree of movement and expansion of the diaphragm while maintaining the clamping effect on the diaphragm, thereby improving the sealing effect between the diaphragm and the annular frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a first isometric structural schematic diagram of the present invention; Figure 2 It is a second isometric structural schematic diagram of the present invention; Figure 3 It is an isometric structural schematic diagram of the sealing assembly in the present invention; Figure 4It is an isometric structural schematic diagram of the diaphragm in the present invention; Figure 5 It is a schematic diagram of the cross-section isometric structure of the sealing assembly in the present invention; Figure 6 It is an isometric structural schematic diagram of the guide frame in the present invention; Figure 7 It is a left-side structural schematic diagram of the present invention; Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at AA in the middle; Fig. 9 for Figure 8 A schematic diagram of the local enlarged structure at B in the middle; Fig.10 for Fig. 9 A schematic diagram of the local enlarged structure at C in the middle; Fig.11 for Fig. 9 Schematic diagram of the local enlarged structure at point D in the middle.

[0022] Description of reference numerals: Diaphragm pump body 10, pump body 11, pump cover 12, first U-shaped tube 13, feed tube 14, mounting block 15, second U-shaped tube 16, discharge tube 17, stepping motor 18, diaphragm chamber 19, diaphragm 20, annular frame 21, first annular rubber block 22, second annular rubber block 23, first annular convex block 24, extension 25, convex portion 26, arc plate 27, arc-shaped rubber member 28, hollow elastic member 29, telescopic seat 30, telescopic block 31, connecting block 32, avoidance groove 33, ejector rod 34, arc-shaped slide groove 35, guide block 36 6. First movable plate 37, first spring 38, first connecting channel 39, telescopic connecting tube 40, arc-shaped slider 41, hydraulic chamber 42, second movable plate 43, second spring 44, second connecting channel 45, eccentric wheel 46, guide frame 47, movable rod 48, mounting plate 49, piston plate 50, connecting plate 51, connecting rod 52, first fixing seat 53, first through hole 54, first limiting ball 55, second fixing seat 56, second through hole 57, second limiting ball 58, second air chamber 59, through hole 60, first air chamber 61. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] As attached Figure 1 To Attachment Fig.11 As shown: The invention provides an improved air pump for conveying materials of an ice cream machine.

[0027] See attached Figure 1 To Attachment Fig.11 , including a diaphragm pump body 10, a pump body 11 is fixedly provided on both sides of the diaphragm pump body 10, a pump cover 12 is installed on the side of the two pump bodies 11 away from each other, a diaphragm 20 is provided between the pump body 11 and the pump cover 12, a diaphragm chamber 19 and a first air cavity 61 are separated by the diaphragm 20 between the inside of the pump body 11 and the inside of the pump cover 12, a first U-shaped tube 13 is fixedly connected between the lower sides of the two pump covers 12, a second U-shaped tube 16 is fixedly connected between the upper sides of the two pump covers 12, and a sealing component is provided on the outer wall of the diaphragm 20; the sealing component includes an annular frame 21, and the outer sides of the annular frame 21 are separated by a diaphragm chamber 19 and a first air cavity 61. A plurality of pairs of first annular protrusions 24 are provided at intervals, an extension portion 25 is provided on the outer wall of the diaphragm 20, a first annular rubber block 22 is provided between the outer wall of the extension portion 25 and the inner wall of the annular frame 21, a second annular rubber block 23 is provided on the inner side walls of the annular frame 21, a plurality of pairs of protrusions 26 are provided at intervals on both sides of the diaphragm 20, a telescopic seat 30 is rotatably provided at both ends of the annular frame 21, a telescopic block 31 is slidably provided inside the telescopic seat 30, a connecting block 32 is rotatably provided at one end of the telescopic block 31, an arc plate 27 is fixedly provided at one end of the connecting block 32, and an arc-shaped rubber piece 28 is slidably provided inside the arc plate 27.

[0028] Preferably, see Attachment Figure 8, Attachment Fig.11 A hollow elastic member 29 is connected between one side of the arc-shaped rubber member 28 and the inside of the arc-shaped plate 27, and the other side of the arc-shaped rubber member 28 is in extrusion contact with the diaphragm 20. The two ends of the first U-shaped tube 13 are respectively connected to the two diaphragm chambers 19, and the two ends of the second U-shaped tube 16 are respectively connected to the two diaphragm chambers 19. The annular frame 21 is fixed between the pump body 11 and the pump cover 12. The two second annular rubber blocks 23 are located on both sides of the diaphragm 20, and each protrusion 26 is located between one side of the diaphragm 20 and one side of the second annular rubber block 23.

[0029] Preferably, see Attachment Fig.10 A avoidance groove 33 is respectively provided at both ends of the annular frame 21, one end of the telescopic seat 30 is rotatably connected in the avoidance groove 33, a first movable plate 37 is slidably provided inside the telescopic seat 30, a push rod 34 is fixedly provided on one side of the first movable plate 37, an arc-shaped slide groove 35 is provided on one side of the avoidance groove 33, one end of the push rod 34 extends into the arc-shaped slide groove 35, one end of the push rod 34 is in sliding contact with the inner wall of the arc-shaped slide groove 35, a guide block 36 is fixedly provided on one side of the interior of the arc-shaped slide groove 35, one end of the push rod 34 is in sliding contact with one side of the guide block 36, and a first spring 38 is connected between one side of the first movable plate 37 and the interior of the telescopic seat 30.

[0030] Preferably, see Attachment Fig.10 To Attachment Fig.11 A first connecting channel 39 is provided inside the telescopic block 31 , one end of the first connecting channel 39 is connected to the inside of the telescopic seat 30 , and the other end of the first connecting channel 39 is connected to the inside of the hollow elastic member 29 and a telescopic connecting pipe 40 is provided.

[0031] Preferably, see Attachment Fig.10 An arc-shaped slider 41 is provided at one end of the arc-shaped slide groove 35 for arc-shaped sliding. A hydraulic chamber 42 is provided at each end of the annular frame 21. The hydraulic chamber 42 is located on one side of the avoidance groove 33. A second movable plate 43 is provided inside the hydraulic chamber 42 for sliding. One end of the arc-shaped slider 41 contacts one side of the second movable plate 43, and the other end of the arc-shaped slider 41 is fixedly connected to one end of the push rod 34.

[0032] Preferably, see Attachment Fig.10 The interiors of each pair of hydraulic chambers 42 are interconnected and provided with a second connecting channel 45 , and a second spring 44 is connected between one side of the second movable plate 43 and one side of the interior of the hydraulic chamber 42 .

[0033] Preferably, see Attachment Figure 5 , Attachment Figure 6A pair of guide frames 47 are fixedly provided at both ends of the annular frame 21, and each pair of guide frames 47 is located on both sides of the telescopic seat 30. A movable rod 48 is provided on both sides of the telescopic seat 30, and one end of the movable rod 48 is fixedly connected to the telescopic block 31, and one end of the movable rod 48 is in sliding contact with the telescopic seat 30, and the other end of the movable rod 48 slides in the guide frame 47.

[0034] Preferably, see Attachment Figure 5 To Attachment Figure 6 The distance between the middle of the guide frame 47 and the rotation point of the telescopic seat 30 is greater than the distance between one end of the guide frame 47 and the rotation point of the telescopic seat 30, and the distance between the middle of the guide frame 47 and the rotation point of the telescopic seat 30 is less than the distance between the other end of the guide frame 47 and the rotation point of the telescopic seat 30.

[0035] Preferably, see Attachment Figure 2 , Attachment Figure 7 To Attachment Figure 8 A stepper motor 18 is installed on one side of the diaphragm pump body 10, and an eccentric wheel 46 is provided at the output end of the stepper motor 18. A piston plate 50 is provided inside the diaphragm pump body 10 for horizontal sliding. Two second air chambers 59 are separated inside the diaphragm pump body 10 by the piston plate 50. The two second air chambers 59 are respectively connected to the two first air chambers 61 and are provided with a pair of through ports 60. A connecting plate 51 is connected between the eccentric wheel 46 and the piston plate 50. One end of the connecting plate 51 is rotatably connected to one side of the eccentric wheel 46, and the other end of the connecting plate 51 is rotatably connected to one side of the piston plate 50. A connecting rod 52 is provided inside the piston plate 50 for horizontal sliding. A pair of mounting plates 49 are respectively provided on the outer walls at both ends of the connecting rod 52. Each pair of mounting plates 49 is located on both sides of the diaphragm 20, and the outer wall of the connecting rod 52 is in sliding contact with the piston plate 50.

[0036] Preferably, see Attachment Figure 1 , Attachment Figure 8 A first fixing seat 53 is fixedly provided inside both ends of the first U-shaped tube 13, a first through hole 54 is provided in the middle of the first fixing seat 53, and a first limiting ball 55 is provided on the upper side of the first through hole 54. A second fixing seat 56 is fixedly provided inside both ends of the second U-shaped tube 16, a second through hole 57 is provided in the middle of the second fixing seat 56, and a second limiting ball 58 is provided on the upper side of the second through hole 57. Two mounting blocks 15 are symmetrically fixedly provided on the lower side of the first U-shaped tube 13, a feeding pipe 14 is provided in the middle of the lower part of the first U-shaped tube 13, and a discharging pipe 17 is provided in the middle of the upper part of the second U-shaped tube 16.

[0037] Specific use of the present invention: The control system controls the stepper motor 18 to start, and the stepper motor 18 starts to drive the eccentric wheel 46 to rotate. The rotation of the eccentric wheel 46 drives the connecting plate 51 to move back and forth. The back and forth movement of the connecting plate 51 drives the piston plate 50 to slide back and forth in the diaphragm pump body 10.

[0038] When the piston plate 50 moves to one side, the gas in the first air cavity 61 is sucked into the second air cavity 59 through the through port 60, so that the diaphragm 20 moves closer to the diaphragm pump body 10, and the space of the diaphragm chamber 19 becomes larger to form a negative pressure cavity. At this time, the first stop ball 55 moves upward under the action of the negative pressure, and the first through hole 54 opens, so that the ice cream material is sucked into the diaphragm chamber 19 through the feed pipe 14 and the first U-shaped tube 13.

[0039] When the piston plate 50 moves to the other side, the piston plate 50 moves to squeeze the gas in the second air cavity 59 into the first air cavity 61 through the through port 60, and the gas in the first air cavity 61 pushes the diaphragm 20 to move away from the diaphragm pump body 10, thereby reducing the space of the diaphragm chamber 19. The movement of the diaphragm 20 squeezes the ice cream material in the diaphragm chamber 19, thereby pushing the ice cream material to move upward and push the second limiting ball 58 to move upward, so that the second through hole 57 is opened, so that the ice cream material in the diaphragm chamber 19 can be discharged through the second U-shaped tube 16 and the discharge pipe 17, thereby realizing the conveying effect of the ice cream material.

[0040] Among them, a plurality of pairs of first annular protrusions 24 are used to be located between the two sides of the outside of the annular frame 21 and the pump body 11 and the pump cover 12, so as to perform multiple sealing actions on the outside of the annular frame 21. A plurality of pairs of protrusions 26 are used to be located between the two sides of the diaphragm 20 and the side where the two second annular rubber blocks 23 are close to each other, so as to perform multiple sealing actions between the annular frame 21 and the diaphragm 20, so as to realize double sealing actions between the inside and the outside of the annular frame 21 through a plurality of pairs of first annular protrusions 24 and a plurality of pairs of protrusions 26, which is helpful to prevent the material in the diaphragm chamber 19 from entering the first air cavity 61. The two second annular rubber blocks 23 limit the inner wall of the extension part 25, and cooperate with the first annular rubber block 22 to be located between the extension part 25 and the inner wall of the annular frame 21, so as to perform double limiting actions on the inner wall and the outer wall of the extension part 25, so as to limit the diaphragm 20 in the annular frame 21. Furthermore, the first annular rubber block 22 and the second annular rubber block 23 are elastic and can perform elastic buffering and limiting functions in the process of continuous movement of the diaphragm 20 , thereby maintaining the sealing effect on the diaphragm 20 .

[0041] Next, the diaphragm 20 moves toward the diaphragm chamber 19, and the movement of the diaphragm 20 pushes the telescopic seat 30 and the telescopic block 31 located on one side of the diaphragm chamber 19 to rotate outward. The rotation of the telescopic seat 30 drives the push rod 34 to rotate, so that one end of the push rod 34 slides onto the guide block 36, and the guide block 36 guides the push rod 34. The push rod 34 and the first movable plate 37 slide, and the first movable plate 37 slides to allow the liquid in the telescopic seat 30 to enter the hollow elastic member 29 through the first connecting channel 39 and the telescopic connecting tube 40. The hollow elastic member 29 expands to squeeze the arc-shaped rubber member 28, thereby increasing the squeezing degree between the arc-shaped rubber member 28 and the diaphragm 20. Among them, the sliding of the first movable plate 37 stretches the first spring 38 to generate elastic force. Under the elastic force of the first spring 38, one end of the push rod 34 can slide and contact with the inner wall of the arc-shaped slide groove 35 or one side of the guide block 36.

[0042] At the same time, the push rod 34 located on one side of the diaphragm chamber 19 moves toward the direction of the guide block 36, thereby pushing the arc-shaped slider 41 to slide in an arc shape in the annular frame 21. The arc-shaped slider 41 slides and pushes the second movable plate 43 radially inwardly, and the second movable plate 43 moves radially inwardly to allow the solution in the hydraulic chamber 42 located on one side of the diaphragm chamber 19 to enter the hydraulic chamber 42 located on one side of the first air chamber 61 through the second connecting channel 45. The second movable plate 43 located on one side of the first air chamber 61 moves radially outwardly, and the radial outward movement of the second movable plate 43 drives the arc-shaped slider 41 located on one side of the first air chamber 61 to slide in an arc shape, thereby pushing the telescopic seat 30 and the telescopic block 31 located on one side of the first air chamber 61 to rotate inwardly, so as to utilize the several pairs of arc-shaped rubber members 28 in the diaphragm chamber 19 and the first air chamber 61 to maintain the clamping and limiting effect on the diaphragm 20, and avoid the expansion of the gap between the diaphragm 20 and the annular frame 21 during the movement of the diaphragm 20.

[0043] Then, the telescopic seat 30 and the telescopic block 31 located on one side of the diaphragm chamber 19 rotate outward, and the distance between the middle of the guide frame 47 and the rotation point of the telescopic seat 30 is greater than the distance between one end of the guide frame 47 and the rotation point of the telescopic seat 30. The telescopic seat 30 rotates outward to drive the movable rod 48 to move, so that one end of the movable rod 48 slides from the middle of the guide frame 47 to one end of the guide frame 47, so that the other end of the movable rod 48 slides on the telescopic seat 30 under the guidance of the guide frame 47, and the other end of the movable rod 48 drives the telescopic block 31 to move close to the first movable plate 37, thereby further squeezing the solution in the telescopic seat 30 and increasing the degree of squeezing of the arc-shaped rubber member 28 by the expansion of the hollow elastic member 29. The telescopic block 31 slides in the telescopic seat 30, and the sliding of the telescopic block 31 drives the connecting block 32, the arc plate 27, the hollow elastic member 29, and the arc rubber member 28 to move, thereby reducing the distance between the arc rubber member 28 and one end of the annular frame 21, reducing the degree of influence on the movement and expansion of the diaphragm 20, and avoiding affecting the efficiency of material transportation.

[0044] At the same time, the telescopic seat 30 and the telescopic block 31 located on one side of the first air cavity 61 rotate inwardly, and the distance between the middle of the guide frame 47 and the rotating position of the telescopic seat 30 is smaller than the distance between the other end of the guide frame 47 and the rotating position of the telescopic seat 30. The telescopic seat 30 rotates inwardly to drive the movable rod 48 to move, so that one end of the movable rod 48 slides from the middle of the guide frame 47 to the other end of the guide frame 47, so that the other end of the movable rod 48 slides on the telescopic seat 30 under the guidance of the guide frame 47, and the other end of the movable rod 48 drives The telescopic block 31 moves away from the first movable plate 37, and the movement of the telescopic block 31 drives the connecting block 32, the arc plate 27, the hollow elastic member 29, and the arc rubber member 28 to move, thereby expanding the distance between the arc rubber member 28 and one end of the annular frame 21, so as to maintain the diaphragm chamber 19 and the plurality of pairs of arc rubber members 28 in the first air cavity 61 to clamp and limit the diaphragm 20, which can avoid affecting the movement and expansion degree of the diaphragm 20 while maintaining the clamping effect on the diaphragm 20 and improving the sealing effect between the diaphragm 20 and the annular frame 21.

[0045] Finally, the stepper motor 18 is used to start the second U-shaped tube 16 to rotate eccentrically, and the eccentric rotation of the second U-shaped tube 16 drives the piston plate 50 to move back and forth through the connecting plate 51, so that the diaphragm 20, the connecting rod 52, and the mounting plate 49 can be driven back and forth by gas. The back and forth movement of the diaphragm 20 utilizes the change in the volume of the diaphragm chamber 19 to convey the material, which has the characteristics of stable conveying and small pressure pulsation. In the conveying of ice cream materials, the volumetric conveying of materials can ensure the uniform distribution of the ice cream materials in the first U-shaped tube 13 or the second U-shaped tube 16, and avoid stratification or precipitation.

[0046] The improved air pump for conveying materials in an ice cream machine of the present invention has a plurality of pairs of first annular protrusions 24 and protrusions 26 disposed between the outer sides of the annular frame 21 and the pump body 11 and the pump cover 12, thereby performing multiple sealing functions on the outer side of the annular frame 21. The plurality of pairs of protrusions 26 are then disposed between the outer sides of the diaphragm 20 and the sides of the two second annular rubber blocks 23 close to each other, thereby performing multiple sealing functions between the annular frame 21 and the diaphragm 20, so that the double sealing functions of the inner and outer sides of the annular frame 21 are realized by the plurality of pairs of first annular protrusions 24 and the plurality of pairs of protrusions 26, which is beneficial to prevent the materials in the diaphragm chamber 19 from entering the first air cavity 61. Through the arrangement of the extension part 25, the first annular rubber block 22, and the second annular rubber block 23, the two second annular rubber blocks 23 limit the inner wall of the extension part 25, and cooperate with the first annular rubber block 22 to be located between the extension part 25 and the inner wall of the annular frame 21, thereby performing a double limiting action on the inner wall and the outer wall of the extension part 25, so as to limit the diaphragm 20 in the annular frame 21. The first annular rubber block 22 and the second annular rubber block 23 are elastic, and can perform an elastic buffering and limiting action during the continuous movement of the diaphragm 20, so as to maintain the sealing action on the diaphragm 20.

[0047] The improved air pump for conveying materials in an ice cream machine of the present invention is provided with a push rod 34, a first movable plate 37, a first connecting channel 39, a telescopic connecting tube 40, a hollow elastic member 29, an arc-shaped rubber member 28, and a guide block 36. The diaphragm 20 moves to push the telescopic seat 30 and the telescopic block 31 located on one side of the diaphragm chamber 19 to rotate outward. The rotation of the telescopic seat 30 drives the push rod 34 to rotate, so that one end of the push rod 34 slides onto the guide block 36, and the guide block 36 is used to guide the push rod 34. The push rod 34 and the first movable plate 37 slide, and the first movable plate 37 slides to drive the liquid in the telescopic seat 30 into the hollow elastic member 29 through the first connecting channel 39 and the telescopic connecting tube 40. The hollow elastic member 29 expands to squeeze the arc-shaped rubber member 28, thereby increasing the squeezing degree between the arc-shaped rubber member 28 and the diaphragm 20. Then, through the arrangement of the arc-shaped slider 41, the hydraulic chamber 42, the second movable plate 43, and the second connecting channel 45, the push rod 34 located on one side of the diaphragm chamber 19 moves toward the guide block 36, thereby pushing the arc-shaped slider 41 to slide in an arc shape in the annular frame 21. The arc-shaped slider 41 slides and pushes the second movable plate 43 to move upward, and the second movable plate 43 moves upward to allow the solution in the hydraulic chamber 42 located on one side of the diaphragm chamber 19 to enter the hydraulic chamber 42 located on one side of the first air chamber 61 through the second connecting channel 45. The second movable plate 43 located on one side of the first air cavity 61 moves downward. The downward movement of the second movable plate 43 pushes the arc-shaped slider 41 located on one side of the first air cavity 61 to slide in an arc shape, thereby pushing the telescopic seat 30 and the telescopic block 31 located on one side of the first air cavity 61 to rotate inward, so as to utilize the diaphragm chamber 19 and several pairs of arc-shaped rubber parts 28 in the first air cavity 61 to maintain the clamping and limiting effect on the diaphragm 20, so as to avoid the expansion of the gap between the diaphragm 20 and the annular frame 21 during the movement of the diaphragm 20.

[0048] The improved air pump for conveying materials in an ice cream machine of the present invention is characterized in that, by setting a guide frame 47 and a movable rod 48, a telescopic seat 30 and a telescopic block 31 located on one side of a diaphragm chamber 19 rotate outwardly, and the distance between the middle of the guide frame 47 and the rotating position of the telescopic seat 30 is greater than the distance between one end of the guide frame 47 and the rotating position of the telescopic seat 30. The telescopic seat 30 rotates outwardly to drive the movable rod 48 to move, so that one end of the movable rod 48 slides from the middle of the guide frame 47 to one end of the guide frame 47, thereby, under the guiding action of the guide frame 47, the other end of the movable rod 48 slides on the telescopic seat 30, and the other end of the movable rod 48 drives the telescopic block 31 to move in a direction close to the first movable plate 37, thereby further squeezing the solution in the telescopic seat 30 and increasing the squeezing degree of the arc-shaped rubber member 28 by the expansion of the hollow elastic member 29. The telescopic block 31 slides in the telescopic seat 30, and the sliding movement of the telescopic block 31 drives the connecting block 32, the arc plate 27, the hollow elastic member 29, and the arc rubber member 28 to move, thereby reducing the distance between the arc rubber member 28 and one end of the annular frame 21, reducing the degree of influence on the movement and expansion of the diaphragm 20, and avoiding influence on the efficiency of material transportation. Then, the telescopic seat 30 and the telescopic block 31 located on one side of the first air cavity 61 rotate inward, and the distance between the middle of the guide frame 47 and the rotation point of the telescopic seat 30 is smaller than the distance between the other end of the guide frame 47 and the rotation point of the telescopic seat 30. The telescopic seat 30 rotates inward to drive the movable rod 48 to move, so that one end of the movable rod 48 slides from the middle of the guide frame 47 to the other end of the guide frame 47, so that under the guidance of the guide frame 47, the other end of the movable rod 48 slides on the telescopic seat 30, and the other end of the movable rod 48 drives The telescopic block 31 moves away from the first movable plate 37, and the movement of the telescopic block 31 drives the connecting block 32, the arc plate 27, the hollow elastic member 29, and the arc rubber member 28 to move, thereby expanding the distance between the arc rubber member 28 and one end of the annular frame 21, so as to maintain the diaphragm chamber 19 and the plurality of pairs of arc rubber members 28 in the first air cavity 61 to clamp and limit the diaphragm 20, which can avoid affecting the movement and expansion degree of the diaphragm 20 while maintaining the clamping effect on the diaphragm 20 and improving the sealing effect between the diaphragm 20 and the annular frame 21.

[0049] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An improved air pump for conveying materials in an ice cream machine, characterized in that: It comprises a diaphragm pump body (10), a pump body (11) is fixedly provided on both sides of the diaphragm pump body (10), a pump cover (12) is installed on the side of the two pump bodies (11) away from each other, a diaphragm (20) is provided between the pump body (11) and the pump cover (12), a diaphragm chamber (19) and a first air cavity (61) are separated between the interior of the pump body (11) and the interior of the pump cover (12) by the diaphragm (20), a first U-shaped tube (13) is fixedly connected between the lower sides of the two pump covers (12), a second U-shaped tube (16) is fixedly connected between the upper sides of the two pump covers (12), and a sealing component is provided on the outer wall of the diaphragm (20); The sealing assembly comprises an annular frame (21), a plurality of pairs of first annular protrusions (24) are arranged at intervals on both sides of the outside of the annular frame (21), an extension portion (25) is arranged on the outer wall of the diaphragm (20), a first annular rubber block (22) is arranged between the outer wall of the extension portion (25) and the inner wall of the annular frame (21), a second annular rubber block (23) is arranged on both sides of the inner wall of the annular frame (21), a plurality of pairs of protrusions (26) are arranged at intervals on both sides of the diaphragm (20), a telescopic seat (30) is rotatably arranged at each end of the annular frame (21), a telescopic block (31) is slidably arranged inside the telescopic seat (30), a connecting block (32) is rotatably arranged at one end of the telescopic block (31), an arc plate (27) is fixedly arranged at one end of the connecting block (32), and an arc rubber piece (28) is slidably arranged inside the arc plate (27).

2. The improved air pump for conveying materials in an ice cream machine according to claim 1, characterized in that: A hollow elastic member (29) is connected between one side of the arc-shaped rubber member (28) and the interior of the arc-shaped plate (27); the other side of the arc-shaped rubber member (28) is in compression contact with the diaphragm (20); the two ends of the first U-shaped tube (13) are respectively connected to the two diaphragm chambers (19); the two ends of the second U-shaped tube (16) are respectively connected to the two diaphragm chambers (19); the annular frame (21) is fixed between the pump body (11) and the pump cover (12); the two second annular rubber blocks (23) are located on both sides of the diaphragm (20); and each of the protrusions (26) is located between one side of the diaphragm (20) and one side of the second annular rubber block (23).

3. The improved air pump for conveying materials in an ice cream machine according to claim 2, characterized in that: An avoidance groove (33) is respectively provided at both ends of the annular frame (21), one end of the telescopic seat (30) is rotatably connected in the avoidance groove (33), a first movable plate (37) is slidably provided inside the telescopic seat (30), a push rod (34) is fixedly provided on one side of the first movable plate (37), an arc-shaped slide groove (35) is provided on one side of the avoidance groove (33), one end of the push rod (34) extends into the arc-shaped slide groove (35), one end of the push rod (34) is in sliding contact with the inner wall of the arc-shaped slide groove (35), a guide block (36) is fixedly provided on one side of the interior of the arc-shaped slide groove (35), one end of the push rod (34) is in sliding contact with one side of the guide block (36), and a first spring (38) is connected between one side of the first movable plate (37) and the interior of the telescopic seat (30).

4. The improved air pump for conveying materials in an ice cream machine according to claim 3, characterized in that: A first connecting channel (39) is provided inside the telescopic block (31), one end of the first connecting channel (39) is connected to the inside of the telescopic seat (30), and the other end of the first connecting channel (39) is connected to the inside of the hollow elastic member (29) and is provided with a telescopic connecting pipe (40).

5. The improved air pump for conveying materials in an ice cream machine according to claim 3, characterized in that: An arc-shaped sliding block (41) is provided at one end of the arc-shaped sliding groove (35) for arc-shaped sliding. A hydraulic chamber (42) is provided at each end of the annular frame (21). The hydraulic chamber (42) is located on one side of the avoidance groove (33). A second movable plate (43) is provided inside the hydraulic chamber (42) for sliding. One end of the arc-shaped sliding block (41) contacts one side of the second movable plate (43), and the other end of the arc-shaped sliding block (41) is fixedly connected to one end of the push rod (34).

6. The improved air pump for material delivery of an ice cream machine according to claim 5, characterized in that: The interiors of each pair of the hydraulic chambers (42) are interconnected and provided with a second connecting channel (45), and a second spring (44) is connected between one side of the second movable plate (43) and one side of the interior of the hydraulic chamber (42).

7. The improved air pump for material delivery of an ice cream machine according to claim 1, characterized in that: A pair of guide frames (47) are fixedly provided at both ends of the annular frame (21), each pair of guide frames (47) is located on both sides of the telescopic seat (30), and a movable rod (48) is provided on both sides of the telescopic seat (30), one end of the movable rod (48) is fixedly connected to the telescopic block (31), one end of the movable rod (48) is in sliding contact with the telescopic seat (30), and the other end of the movable rod (48) slides in the guide frame (47).

8. The improved air pump for conveying materials in an ice cream machine according to claim 7, characterized in that: The distance between the middle of the guide frame (47) and the rotation point of the telescopic seat (30) is greater than the distance between one end of the guide frame (47) and the rotation point of the telescopic seat (30), and the distance between the middle of the guide frame (47) and the rotation point of the telescopic seat (30) is less than the distance between the other end of the guide frame (47) and the rotation point of the telescopic seat (30).

9. The improved air pump for material delivery of an ice cream machine according to claim 1, characterized in that: A stepper motor (18) is installed on one side of the diaphragm pump body (10), an eccentric wheel (46) is provided at the output end of the stepper motor (18), a piston plate (50) is provided inside the diaphragm pump body (10) for horizontal sliding, two second air chambers (59) are provided inside the diaphragm pump body (10) through the piston plate (50), the two second air chambers (59) are respectively connected to the two first air chambers (61) and a pair of through ports (60) are provided, and a space between the eccentric wheel (46) and the piston plate (50) is provided. A connecting plate (51) is provided in connection, one end of the connecting plate (51) is rotatably connected to one side of the eccentric wheel (46), and the other end of the connecting plate (51) is rotatably connected to one side of the piston plate (50). A connecting rod (52) is provided inside the piston plate (50) for horizontal sliding. A pair of mounting plates (49) are respectively provided on the outer walls at both ends of the connecting rod (52). Each pair of mounting plates (49) is located on both sides of the diaphragm (20), and the outer wall of the connecting rod (52) is in sliding contact with the piston plate (50).

10. The improved air pump for material delivery in an ice cream machine according to claim 1, characterized in that: A first fixing seat (53) is fixedly provided inside each of the two ends of the first U-shaped tube (13), a first through hole (54) is provided in the middle of the first fixing seat (53), and a first limiting ball (55) is provided on the upper side of the first through hole (54); a second fixing seat (56) is fixedly provided inside each of the two ends of the second U-shaped tube (16), a second through hole (57) is provided in the middle of the second fixing seat (56), and a second limiting ball (58) is provided on the upper side of the second through hole (57); two mounting blocks (15) are symmetrically fixedly provided on the lower side of the first U-shaped tube (13), a feeding pipe (14) is provided in the middle of the lower part of the first U-shaped tube (13), and a discharging pipe (17) is provided in the middle of the upper part of the second U-shaped tube (16).

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