A filling pump rotary valve control device and a filling machine

Abstract

The application discloses a filling pump rotary valve control device, which comprises synchronous pulleys, telescopic pressure rod assemblies and rotary shafts connected with the rotary valve. The synchronous pulleys are arranged on the rotary shafts and can rotate relative to the rotary shafts. The rotary shafts are provided with transmission discs. The synchronous pulleys and the transmission discs are connected with lifting transmission shaft assemblies. The transmission discs are provided with pressure plates below the transmission discs, which are used for separating the lifting transmission shaft assemblies from the transmission discs. The synchronous pulleys are located below the pressure plates. The telescopic pressure rod assemblies are arranged above the transmission discs and comprise at least two first pressure rods. The transmission discs are provided with passages through which the first pressure rods pass to press the pressure plates. The application further discloses a filling machine, which comprises a driving motor, a driving pulley connected with an output shaft of the driving motor and the filling pump rotary valve control device. The driving pulley is connected with the synchronous pulleys through synchronous belts. The application has the advantages of simple structure, reliability, avoidance of liquid dripping in the case of bottle shortage or abnormality and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to food and medicine packaging machinery, in particular to a filling pump rotary valve control device and a filling machine. BACKGROUND

[0002] When the conventional filling machine is in multi-station filling, some filling stations may lack bottles due to sampling and weighing or abnormal situations, at this time, the rotary valve of the filling pump corresponding to the bottle-lacking station should stop rotating to avoid liquid dripping and causing waste of liquid and pollution of equipment. The inlet and outlet rotary valves of each filling pump are controlled by a synchronous pulley, and each synchronous pulley is controlled by a synchronous belt, that is, all the synchronous pulleys rotate synchronously under the drive of the synchronous belt, so it is impossible to stop the rotation of the inlet and outlet rotary valves of the bottle-lacking station alone. The rotation of the rotary valve increases the pressure of the liquid in the pump body, causing liquid dripping.

[0003] Patent document CN209739412U discloses a rotary valve pump control device, which uses a telescopic driving member to drive a pressing rod to press down, so that the second rotary disc is separated from the first rotary disc, and the rotating part cannot drive the connecting shaft of the rotary valve pump to rotate when there is a lack of bottles. The technical solution has the following disadvantages: the pressing rod is located at the center of the connecting shaft, although the second rotary disc has been separated from the first rotary disc, but when the rotating part rotates, it will produce slight vibration, causing the second rotary disc to produce radial displacement, and thus the connecting shaft also produces radial displacement, so there is still a slight liquid dripping phenomenon. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a filling pump rotary valve control device with simple structure and reliability, which can avoid liquid dripping when there is a lack of bottles or abnormal situations.

[0005] The present application further provides a filling machine comprising the above-mentioned filling pump rotary valve control device.

[0006] To solve the above technical problems, the present application adopts the following technical solutions:

[0007] A filling pump rotary valve control device, comprising a synchronous pulley, a telescopic pressing rod assembly and a rotating shaft connected with a rotary valve, the synchronous pulley is arranged on the rotating shaft and can rotate relative to the rotating shaft, a transmission disc is arranged on the rotating shaft, a lifting transmission shaft assembly is connected between the synchronous pulley and the transmission disc, a pressing disc is arranged below the transmission disc for separating the lifting transmission shaft assembly from the transmission disc, the synchronous pulley is located below the pressing disc, the telescopic pressing rod assembly is arranged above the transmission disc and comprises at least two first pressing rods, and channels are arranged on the transmission disc for the first pressing rods to pass through to press down the pressing disc.

[0008] As a further improvement of the above technical solution, the lifting transmission shaft assembly comprises a lifting disc arranged on the pressing disc and rotatable relative to the pressing disc, and a plurality of lifting transmission shafts arranged along the circumferential direction of the lifting disc.

[0009] As a further improvement of the above technical solution, the lifting transmission shaft assembly further comprises a plurality of elastic members arranged along the circumferential direction of the synchronous pulley, and the elastic members are connected between the synchronous pulley and the lifting disc.

[0010] As a further improvement of the above technical solution, the transmission disc is provided with a groove for the lifting transmission shaft to extend into, and the synchronous pulley is provided with a through hole for the lifting transmission shaft to pass through.

[0011] As a further improvement of the above technical solution, a first rolling bearing is arranged between the synchronous pulley and the rotating shaft, and a second rolling bearing is arranged between the lifting disc and the pressing disc.

[0012] As a further improvement of the above technical solution, a first linear bearing is arranged in the through hole, and the lifting transmission shaft passes through the first linear bearing.

[0013] As a further improvement of the above technical solution, the telescopic pressing rod assembly further comprises a telescopic driving member and a mounting plate connected with the telescopic driving member, and the first pressing rod is arranged on the mounting plate.

[0014] As a further improvement of the above technical solution, the pressing disc is further provided with a second pressing rod matched with the first pressing rod, and the second pressing rod passes through the channel.

[0015] As a further improvement of the above technical solution, a second linear bearing is arranged in the channel, and the second pressing rod passes through the second linear bearing.

[0016] A filling machine comprises a driving motor, a driving pulley connected with the output shaft of the driving motor, and the filling pump rotary valve control device described above, and the driving pulley is connected with each synchronous pulley through a synchronous belt.

[0017] Compared with the prior art, the advantages of the present application are that: the filling pump rotary valve control device disclosed by the present application, when normal filling, the synchronous pulley drives the transmission disc to rotate through the lifting transmission shaft assembly, the transmission disc drives the rotary shaft to rotate, the rotary valve acts, and the liquid adding action to the bottle body is realized; when a certain station appears a lack of bottles or an abnormality, each first pressure rod in the telescopic pressure rod assembly presses the pressure disc downward through the channel on the transmission disc, so that the lifting transmission shaft assembly is separated from the transmission disc, at this time, the synchronous pulley cannot continue to drive the rotary shaft to act, correspondingly, the rotary valve does not act, even if the synchronous pulley rotates, slight vibration will be generated, since the first pressure rod is provided with at least two rods and extends into the channel on the transmission disc, the transmission disc can be limited, so that the transmission disc cannot produce radial displacement, the dripping phenomenon is effectively avoided, and the structure is simple and reliable. The synchronous pulley is arranged below the pressure disc, the layout of the plurality of first pressure rods is facilitated, the overall size of the device is more compact, and the structure is more reasonable.

[0018] The filling machine disclosed by the present application comprises the filling pump rotary valve control device described above, and thus also has the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective structural schematic view of the filling pump rotary valve control device of the present application.

[0020] Figure 2 is a first sectional view structural schematic view of the filling pump rotary valve control device of the present application.

[0021] Figure 3 is a second sectional view structural schematic view of the filling pump rotary valve control device of the present application.

[0022] Figure 4 is a structural schematic view of the lifting transmission shaft assembly and the transmission disc in a separated state of the present application.

[0023] Figure 5 is a front view structural schematic view of the filling machine of the present application.

[0024] Figure 6 is a top view structural schematic view of the filling machine of the present application.

[0025] The numbers in the figure represent: 1, synchronous pulley; 11, first linear bearing; 2, rotary valve; 3, rotary shaft; 4, transmission disc; 41, channel; 42, groove; 43, second linear bearing; 5, lifting transmission shaft assembly; 51, lifting disc; 52, lifting transmission shaft; 53, elastic member; 6, pressure disc; 61, pressing part; 62, second pressure rod; 7, telescopic pressure rod assembly; 71, telescopic driving member; 72, mounting plate; 73, first pressure rod; 81, first rolling bearing; 82, second rolling bearing; 9, driving motor; 91, driving pulley; 92, synchronous belt. DETAILED DESCRIPTION

[0026] The application will be further described in detail below in combination with the accompanying drawings and specific embodiments.

[0027] Embodiment one

[0028] Figures 1 to 6 An embodiment of the filling pump valve control device of the application is shown. The filling pump valve control device of the embodiment comprises a synchronous pulley 1, an extension pressure rod assembly 7 and a rotating shaft 3 connected with a valve 2. The synchronous pulley 1 is arranged on the rotating shaft 3 and can rotate relative to the rotating shaft 3. The rotating shaft 3 is provided with a transmission disc 4. The synchronous pulley 1 and the transmission disc 4 are connected with a lifting transmission shaft assembly 5. A pressure disc 6 is arranged below the transmission disc 4 and is used to separate the lifting transmission shaft assembly 5 from the transmission disc 4. The synchronous pulley 1 is located below the pressure disc 6. The extension pressure rod assembly 7 is arranged above the transmission disc 4 and comprises at least two first pressure rods 73. The transmission disc 4 is provided with passages 41 through which the first pressure rods 73 pass to press down the pressure disc 6.

[0029] The filling pump valve control device, when normally filling, the synchronous pulley 1 drives the transmission disc 4 to rotate through the lifting transmission shaft assembly 5. The transmission disc 4 drives the rotating shaft 3 to rotate. The valve 2 is actuated to realize the liquid adding action to the bottle body. When a certain station is out of bottles or abnormal, the first pressure rod 73 in the corresponding extension pressure rod assembly 7 presses down the pressure disc 6 through the passage 41 on the transmission disc 4, so that the lifting transmission shaft assembly 5 is separated from the transmission disc 4. At this time, the synchronous pulley 1 cannot continue to drive the rotating shaft 3 to act. Correspondingly, the valve 2 does not act. Even if the synchronous pulley 1 rotates, it will produce slight vibration. Since the first pressure rod 73 is arranged in at least two and extends into the passage 41 on the transmission disc 4, the transmission disc 41 can be limited, so that the transmission disc 4 cannot produce radial displacement, effectively avoiding the dripping phenomenon, and the structure is simple and reliable. Compared with the prior art, the synchronous pulley 1 is arranged below the pressure disc 6, which is convenient for the layout of the multiple first pressure rods 73, makes the overall size of the device more compact, and the structure is more reasonable.

[0030] Further, in the embodiment, the lifting transmission shaft assembly 5 comprises a lifting disc 51 arranged on the pressure disc 6 and rotatable relative to the pressure disc 6 and a plurality of lifting transmission shafts 52 arranged along the circumferential direction of the lifting disc 51. Preferably, the plurality of lifting transmission shafts 52 are uniformly arranged along the circumferential direction of the lifting disc 51, which is beneficial to maintaining dynamic force balance. The pressure disc 6 is provided with a pressing portion 61 for pressing down the lifting disc 51. When normally filling, the synchronous pulley 1 drives the lifting disc 51 and the transmission disc 4 to rotate through the lifting transmission shaft 52. After the first pressure rod 73 is pressed down, the pressure disc 6 is pressed down and drives the lifting disc 51 to descend through the pressing portion 61. The lifting disc 51 in turn drives the lifting transmission shaft 52 to descend. The lifting transmission shaft 52 is separated from the transmission disc 4. The structure is simple and reliable.

[0031] Further, in the embodiment, the lifting transmission shaft assembly 5 further comprises a plurality of elastic members 53 arranged along the circumferential direction of the synchronous belt wheel 1. Preferably, the elastic members 53 can be coil springs or elastic columns, etc. The plurality of elastic members 53 are evenly arranged along the circumferential direction, which is beneficial to keep the lifting disc 51 balanced at all places. The elastic members 53 are connected between the synchronous belt wheel 1 and the lifting disc 51. When the lifting disc 51 is lowered, the elastic members 53 are compressed, which can play a certain buffering role. When the first pressing rod 73 is raised, the elastic members 53 in the compressed state generate elastic force, so that the lifting disc 51 drives the lifting transmission shaft 52 to rise and reset. The lifting transmission shaft 52 is connected with the transmission disc 4 again. The structure is simple and the degree of automation is improved.

[0032] As a preferred embodiment, the transmission disc 4 is provided with a groove 42 for the lifting transmission shaft 52 to extend into, and the synchronous belt wheel 1 is provided with a through hole for the lifting transmission shaft 52 to pass through. When the lifting transmission shaft 52 is located in the groove 42, the lifting transmission shaft 52 can drive the transmission disc 4 to rotate. When the lifting transmission shaft 52 exits from the groove 42, it cannot continue to drive the transmission disc 4 to rotate. When the lifting transmission shaft 52 rises under the elastic force of the elastic member 53, the top wall of the groove 42 can play a limiting role, so that the elastic member 53 remains in a certain degree of compression state.

[0033] As a preferred embodiment, a first rolling bearing 81 is arranged between the synchronous belt wheel 1 and the rotating shaft 3, and a second rolling bearing 82 is arranged between the lifting disc 51 and the pressing disc 6. When the rotating shaft 3 does not need to rotate, the first rolling bearing 81 can be arranged to avoid mutual influence between the synchronous belt wheel 1 and the rotating shaft 3, and the second rolling bearing 82 can be arranged to avoid the influence of the pressing disc 6 on the rotating movement of the lifting disc 51. The structure is simple and reasonable.

[0034] Further, in the embodiment, the through hole is provided with a first linear bearing 11, and the lifting transmission shaft 52 passes through the first linear bearing 11. The first linear bearing 11 can be arranged to reduce the resistance of the lifting movement of the lifting transmission shaft 52, so that the action is smoother. At the same time, the first linear bearing 11 can provide a guiding effect and ensure the accuracy of the lifting movement.

[0035] As a preferred embodiment, the telescopic pressing rod assembly 7 further comprises a telescopic driving member 71 (such as a pneumatic cylinder, an electric cylinder, etc.) and a mounting plate 72 connected with the telescopic driving member 71, and the first pressing rod 73 is arranged on the mounting plate 72. Through the telescopic movement of the telescopic driving member 71, the mounting plate 72 and each first pressing rod 73 on the mounting plate 72 can be telescoped integrally. The structure is simple and reliable.

[0036] As a preferred embodiment, the pressing plate 6 is further provided with a second pressing rod 62 matched with the first pressing rod 73, and the second pressing rod 62 is arranged in the channel 41. On one hand, when the filling is normal, the second pressing rod 62 can connect the transmission plate 4 and the pressing plate 6 as a whole, so that the two rotate synchronously. On the other hand, when the first pressing rod 73 is pressed, the pressing plate 6 can be lowered through the second pressing rod 62, so that the stroke of the first pressing rod 73 can be shortened.

[0037] As a preferred embodiment, the channel 41 is provided with a second linear bearing 43, and the second pressing rod 62 is arranged in the second linear bearing 43.

[0038] The second linear bearing 43 can reduce the resistance of the lifting movement of the first pressing rod 73 and the second pressing rod 62, so that the action is smoother, and the guiding effect can be provided to ensure the accuracy of the lifting movement.

[0039] The working principle of the filling pump valve control device is as follows:

[0040] When the filling is normal, the synchronous pulley 1 drives the lifting plate 51 and the transmission plate 4 to rotate through the lifting transmission shaft 52, the transmission plate 4 drives the rotating shaft 3 to rotate, the rotating valve 2 is actuated, and the liquid filling action on the bottle body is realized. When a bottle is missing or abnormal at a certain station, each first pressing rod 73 is pressed downward through the channel 41 on the transmission plate 4 under the action of the telescopic driving part 71, the pressing plate 6 is lowered through the second pressing rod 62, the lower pressing part 61 of the pressing plate 6 drives the lifting plate 51 to lower, the lifting plate 51 in turn drives the lifting transmission shaft 52 to lower, and the lifting transmission shaft 52 is separated from the groove 42 on the transmission plate 4. At this time, the synchronous pulley 1 cannot continue to drive the rotating shaft 3 to act, and the corresponding rotating valve 2 does not act. Even if the synchronous pulley 1 rotates, a slight vibration is generated. Since the first pressing rod 73 is provided with at least two rods which extend into the channel 41 on the transmission plate 4, the transmission plate 4 cannot produce radial displacement, and the liquid dripping phenomenon is effectively avoided. When the lifting plate 51 is lowered, the elastic part 53 is compressed. After the first pressing rod 73 is lifted, the elastic part 53 in the compressed state generates elastic force, so that the lifting plate 51 drives the lifting transmission shaft 52 to rise and reset, and the lifting transmission shaft 52 extends into the groove 42 on the transmission plate 4 again.

[0041] Embodiment two

[0042] The filling machine of the embodiment comprises a driving motor 9 (preferably a servo motor) and a driving pulley 91 connected with the output shaft of the driving motor 9, and a plurality of filling pump valve control devices described above, and the driving pulley 91 is connected with each synchronous pulley 1 through a synchronous belt 92.

[0043] The filling machine comprises the filling pump rotary valve control device, and thus has the above-mentioned advantages. During normal filling, the driving motor 9 drives the driving pulley 91 to rotate, and the driving pulley 91 drives each synchronous pulley 1 to rotate synchronously through the synchronous belt 92, and each rotary valve 2 synchronously completes filling.

[0044] Although the present application has been disclosed with reference to preferred embodiments, it is not intended to limit the present application. Any person skilled in the art, without departing from the technical solution of the present application, can make many possible changes and modifications to the technical solution of the present application by using the disclosed technical content, or modify equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical solution of the present application, shall fall within the protection scope of the technical solution of the present application.

Claims

1. A filling pump rotary valve control device, comprising a synchronous pulley (1), a telescopic pressure rod assembly (7), and a rotating shaft (3) connected to a rotary valve (2), wherein the synchronous pulley (1) is mounted on the rotating shaft (3) and can rotate relative to the rotating shaft (3), characterized in that: The rotating shaft (3) is provided with a transmission disc (4), the synchronous pulley (1) and the transmission disc (4) are connected with a lifting transmission shaft assembly (5), the transmission disc (4) is provided below with a pressure disc (6) for separating the lifting transmission shaft assembly (5) from the transmission disc (4), the synchronous pulley (1) is located below the pressure disc (6), the telescopic pressure rod assembly (7) is arranged above the transmission disc (4) and comprises at least two first pressure rods (73), the transmission disc (4) is provided with a passage (41) for each first pressure rod (73) to pass through to press down the pressure disc (6).

2. The pump valve control device of claim 1, wherein: The lifting transmission shaft assembly (5) comprises a lifting disc (51) arranged on the pressure disc (6) and rotatable relative to the pressure disc (6) and a plurality of lifting transmission shafts (52) arranged in the circumferential direction of the lifting disc (51), and the pressure disc (6) is provided with a pressing portion (61) for pressing down the lifting disc (51).

3. The pump valve control device of claim 2, wherein: The lifting transmission shaft assembly (5) further comprises a plurality of elastic members (53) arranged in the circumferential direction of the synchronous pulley (1), and the elastic members (53) are connected between the synchronous pulley (1) and the lifting disc (51).

4. The pump valve control assembly of claim 2, wherein: The transmission disc (4) is provided with a groove (42) for the lifting transmission shaft (52) to extend into, and the synchronous pulley (1) is provided with a through hole for the lifting transmission shaft (52) to pass through.

5. The pump valve control assembly of claim 2, wherein: The first rolling bearing (81) is arranged between the synchronous pulley (1) and the rotating shaft (3), and the second rolling bearing (82) is arranged between the lifting disc (51) and the pressure disc (6).

6. The pump valve control device of claim 4, wherein: The first linear bearing (11) is arranged in the through hole, and the lifting transmission shaft (52) passes through the first linear bearing (11).

7. A pump and valve control device according to any one of claims 2 to 6, wherein: The telescopic pressure rod assembly (7) further comprises a telescopic driving member (71) and a mounting plate (72) connected with the telescopic driving member (71), and the first pressure rod (73) is arranged on the mounting plate (72).

8. A pump and valve control device according to any one of claims 2 to 6, wherein: The pressure disc (6) is further provided with a second pressure rod (62) matched with the first pressure rod (73), and the second pressure rod (62) passes through the passage (41).

9. The pump valve control device of claim 8, wherein: The second linear bearing (43) is arranged in the passage (41), and the second pressure rod (62) passes through the second linear bearing (43).

10. A filling machine comprising a drive motor (9) and a drive pulley (91) connected to the output shaft of the drive motor (9), characterized in that: A plurality of the valve control devices of the filling pump according to any one of claims 1-9 are further included, and the driving pulley (91) is connected with each synchronous pulley (1) through a synchronous belt (92).

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