Flow detection device for a dosing filler

Abstract

The application belongs to the technical field of waist wheel flow meters, and discloses a flow detection device for a quantitative filling machine, which comprises a shell one, the front surface of the shell one is fixedly connected with a display, the upper part of the back surface of the display is fixedly connected with a counting receiver, and the middle part of the inner cavity of the shell one is movably sleeved with a waist wheel one. The application detects small amplitude changes through the setting of a branch transition pipe. Since the initial pressure is insufficient when the machine just starts to work, the liquid flows through the branch pipe shell through the branch transition pipe. The inner wall of the branch pipe shell is inclined to the rotating plate at a certain angle, so that when the liquid flows, the liquid deflection flow pushes the movable shaft to rotate, and then feeds back to the counting receiver. The corresponding end faces of the supporting permanent magnet and the feedback permanent magnet are of the same level and repel each other, so that the feedback permanent magnet is always not in contact with the supporting permanent magnet, and the friction caused by rotation is reduced.

Description

Technical Field

[0001] This invention belongs to the field of rotary flow meter technology, specifically a flow detection device for a quantitative filling machine. Background Technology

[0002] A flow detection device, also known as a flow sensor or flow meter, is a device specifically used to indicate the detection of canned goods or the cumulative total amount of the substance being detected within a selected time interval in a quantitative filling machine. It can also be used to indicate the internal pressure of a pipeline. Flow detection devices are the eyes of quantitative filling machines. Accurate flow meters play an important role in ensuring product quality, improving production efficiency, and promoting scientific and technological development. Existing types of flow meters include differential pressure flow meters, rotor flow meters, volumetric flow meters, electromagnetic flow meters, and ultrasonic flow meters. They mainly calculate volume by comparing the pressure difference within a fixed distance in a pipeline, counting a fixed volume, or providing signal feedback intervals over a distance. The object being measured is generally a liquid. Among existing flow meters, volumetric flow meters are widely used due to their high accuracy and wide range of measurement capabilities.

[0003] However, existing flow detection devices for filling machines still have some problems in actual use: First, existing flow detection devices for filling machines detect the volume of liquid by estimation. However, when the valve is opened each time, the liquid in the pipeline is not fully covered by the pressure due to insufficient liquid pressure. The volumetric flow meter divides the space by rotation, but some spaces are not filled before counting, resulting in inaccurate volumetric data. Second, existing flow detection devices deliver liquids at a fixed temperature and cannot deliver liquids with large temperature differences. When the temperature difference is too large, thermal expansion is likely to occur, causing blockage inside the volumetric flow meter. The pressure inside the pipeline prevents the liquid from flowing, eventually leading to pipeline rupture and unnecessary losses. Summary of the Invention

[0004] The purpose of this invention is to provide a flow detection device for a quantitative filling machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flow detection device for a quantitative filling machine, comprising a housing, a display fixedly connected to the front of the housing, a counting receiver fixedly connected to the upper part of the back of the display, main transition pipes fixedly connected to both sides of the housing, flanges fixedly connected to the end faces of the two main transition pipes, a first sprocket movably sleeved in the middle of the inner cavity of the housing, a second sprocket movably sleeved below the first sprocket and connected to the housing, a second sprocket fixedly connected to one end of the second sprocket, a third sprocket fixedly connected to one end of the first sprocket and meshing with the second sprocket, a fourth sprocket fixedly connected to the other end of the first sprocket, and a feedback gear inserted into the display at the end of the feedback gear away from the first sprocket. Grooves are provided on both sides of the first and second sprockets, and several sets of equidistantly arranged shock-absorbing springs are fixedly installed inside the grooves, with a movable stop fixedly connected to one end of each shock-absorbing spring and movably sleeved with the groove.

[0006] Preferably, a second housing is fixedly installed on the middle of the back side of the first housing, a fixing rod is fixedly connected to the upper part of the inner cavity of the second housing, a control claw is movably sleeved on the side of the fixing rod, a return spring is fixedly connected to the middle of the control claw at the other end and fixedly connected to the second housing, and a nitrile wheel is fixedly connected to the end of the first movable gear away from the first sprocket.

[0007] Preferably, a flow direction indicator is fixedly connected to the front of the first housing; a branch transition pipe is fixedly connected to the upper part of the two main transition pipes; a branch pipe housing is fixedly connected to the middle of the branch transition pipe; the inner wall of the branch pipe housing is snapped into a counting receiver; a solenoid valve is snapped into one side of the branch pipe housing; a hollow groove is formed in the middle of the branch pipe housing; an upper feedback device is snapped into one side of the bottom of the hollow groove; an annular block fixedly connected to the branch pipe housing is fixedly connected to the upper end of the hollow groove; a moving shaft is fixedly connected to the middle of the annular block; a slot is formed on one side of the annular block; and a sleeve that movably engages with the slot is movably fitted at the bottom of the moving shaft. The valve is connected to a sealed valve. A lower feedback device, which is on the same side as the upper feedback device, is fixedly connected to one side of the sealed valve. Multiple sets of deflection plates are fixedly connected to both ends of the inner cavity of the branch pipe housing. A support member is fixedly connected to the middle of the middle of the two sets of deflection plates. A support permanent magnet is snapped into the middle of the corresponding end face of the two support members. A guide shaft, which is fixedly connected to the deflection plate, is fixedly connected to the end of the two support members away from the support permanent magnet. Multiple sets of rotating plates are arranged in the middle of the branch pipe housing. A signal device is fixedly connected to the upper part of one of the rotating plates. A movable shaft is fixedly connected to the middle of the middle of the rotating plate. Feedback permanent magnets are snapped into the middle of the two ends of the movable shaft.

[0008] Preferably, the corresponding end faces of the movable abutment are all adapted to the groove.

[0009] Preferably, the acrylonitrile wheel and the control claw are located on the same plane, and the top of the control claw contacts the root of the tooth of the acrylonitrile wheel.

[0010] Preferably, the corresponding end faces of the supporting permanent magnet and the feedback permanent magnet have the same pole, and the feedback permanent magnet is located at the center of the supporting permanent magnet.

[0011] The beneficial effects of this invention are as follows:

[0012] 1. This invention detects small changes by setting up a branch transition pipe. Because the initial pressure is insufficient when the machine starts working, it cannot drive the first and second lobes to rotate. Therefore, the liquid flows through the branch pipe housing through the branch transition pipe. Since the lower feedback device is not in contact with the upper feedback device, the solenoid valve is closed. When the liquid level rises, it pushes the lower feedback device to contact the upper feedback device, and the solenoid valve opens, performing one count. When the liquid can fill the inside of the branch pipe housing, the inner wall of the branch pipe housing deflector plate and the rotating plate form a certain angle, so that the flowing liquid drives the movable shaft to rotate due to the deflection. When the rotating plate rotates one revolution, the signal device feeds back to the counting receiver once. The corresponding end faces of the supporting permanent magnet and the feedback permanent magnet are of the same level and repel each other, so that the feedback permanent magnet never contacts the supporting permanent magnet, reducing the friction caused by rotation.

[0013] 2. This invention utilizes the elastic force of the damping spring to ensure a fixed displacement distance of the movable stop within the inner cavity of the first sprocket. When the temperature difference is small, the first and second sprockets rotate to form a sealed space, while the elastic force of the return spring constantly presses against the control pawl. The end of the control pawl abuts against the tooth root of the acrylonitrile wheel, and the acrylonitrile wheel is fixedly connected to the second movable gear to form a unidirectional rotation, which is cumulatively calculated on the display. When the temperature difference is large, thermal expansion reduces the rotation space between the first and second sprockets. When they rotate, the reduced space causes the movable stop to be squeezed when it contacts the inner wall of the first housing or the first sprocket, compressing the damping spring. Simultaneously, the damping spring provides a reaction force to the movable stop, thus forming a sealed space. When the valve is suddenly closed, the liquids on both sides of the first housing flush against each other, while the branch pipe housing can slow down the internal movement of the first housing, preventing damage to the internal components of the first housing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall invention;

[0015] Figure 2 This is a schematic cross-sectional view of the structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the overall half-section of the present invention;

[0017] Figure 4 This is a schematic diagram of a half-section of the branch pipe shell of the present invention;

[0018] Figure 5This is a schematic diagram of the interior of the branch pipe shell of the present invention;

[0019] Figure 6 This is a schematic diagram of the entire assembly of the first and second waist wheels of the present invention;

[0020] Figure 7 For the present invention Figure 4 Enlarged view of point A in the middle;

[0021] Figure 8 This is a schematic diagram of the card slot structure of the present invention.

[0022] In the diagram: 1. Housing 1; 2. Flange; 3. Display; 4. Main transition pipe; 5. Movable gear 1; 51. Movable gear 2; 6. Lobe wheel 1; 61. Lobe wheel 2; 7. Feedback gear; 8. Shock-absorbing spring; 9. Movable stop; 10. Fixed rod; 11. Control claw; 12. Groove; 13. Housing 2; 14. Return spring; 15. Nitrile wheel; 16. Flow direction indicator; 17. Branch transition pipe; 18. Branch pipe housing; 19. Support; 20. Support permanent magnet; 21. Deflection plate; 22. Movable shaft; 23. Feedback permanent magnet; 24. Rotating plate; 25. Counting receiver; 26. Guide shaft; 27. Solenoid valve; 28. Hollow groove; 29. ​​Upper feedback device; 30. Annular block; 31. Moving shaft; 32. Slot; 33. Sealing valve; 34. Lower feedback device; 35. Signal device. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1 to 6As shown, this embodiment of the invention provides a flow detection device for a quantitative filling machine, including a housing 1. A display 3 is fixedly connected to the front of the housing 1, and a counting receiver 25 is fixedly connected to the upper part of the back of the display 3. Main transition pipes 4 are fixedly connected to both sides of the housing 1, and flanges 2 are fixedly connected to the end faces of the two main transition pipes 4. A movable waist wheel 6 is movably sleeved in the middle of the inner cavity of the housing 1. A second waist wheel 61 is movably sleeved below the first waist wheel 6 and is connected to the housing 1. One end of the second waist wheel 61 is fixedly connected to a movable tooth. One end of the second wheel 51 and the first wheel 6 is fixedly connected to a movable gear 5 that meshes with the second movable gear 51. The other end of the first wheel 6 is fixedly connected to a feedback gear 7. The end of the feedback gear 7 away from the first wheel 6 is inserted into the display 3. The feedback gear 7 meshes with the gear inside the display 3. Grooves 12 are provided on both sides of the first wheel 6 and the second wheel 61. Several sets of equidistant shock-absorbing springs 8 are fixedly installed inside the grooves 12. One end of each shock-absorbing spring 8 is fixedly connected to a movable abutment 9 that is movably sleeved with the groove 12.

[0025] Among them, a second housing 13 is fixedly installed in the middle of the back of the first housing 1. A fixed rod 10 is fixedly connected to the upper part of the inner cavity of the second housing 13. A control claw 11 is movably sleeved on the side of the fixed rod 10. A return spring 14 is fixedly connected to the middle of the control claw 11, and the other end is fixedly connected to the second housing 13. A nitrile wheel 15 is fixedly connected to the end of the movable gear 5 away from the waist wheel 6. The control claw 11 abuts against the root of the tooth of the nitrile wheel 15, so that the nitrile wheel 15 rotates around one direction, thereby causing the movable gear 5 to rotate in one direction. The elastic force of the return spring 14 makes the control claw 11 always subjected to a downward force.

[0026] Among them, a flow direction indicator 16 is fixedly connected to the front of the housing 1; a branch transition pipe 17 is fixedly connected to the upper part of the two main transition pipes 4; a branch pipe housing 18 is fixedly connected to the middle of the branch transition pipe 17; the inner wall of the branch pipe housing 18 is snapped into the counting receiver 25; a solenoid valve 27 is snapped into one side of the branch pipe housing 18; a hollow groove 28 is opened in the middle of the branch pipe housing 18; an upper feedback device 29 is snapped into one side of the bottom of the hollow groove 28; an annular block 30 is fixedly connected to the upper end of the hollow groove 28 and is fixedly connected to the branch pipe housing 18; a moving shaft 31 is fixedly connected to the middle of the annular block 30; and a slot is opened on one side of the annular block 30. 32. A sealing valve 33 is movably sleeved at the bottom of the moving shaft 31 and movably sleeved with the slot 32. A lower feedback device 34, on the same side as the upper feedback device 29, is fixedly connected to one side of the sealing valve 33. Multiple sets of deflecting plates 21 are fixedly connected to both ends of the inner cavity of the branch pipe housing 18. A support member 19 is fixedly connected to the middle of each of the two sets of deflecting plates 21. A supporting permanent magnet 20 is snapped into the middle of the corresponding end face of the two support members 19. A guide shaft 26, fixedly connected to the deflecting plate 21, is fixedly connected to the end of each of the two support members 19 away from the supporting permanent magnet 20. Multiple sets of rotating plates 24 are provided in the middle of the branch pipe housing 18. One of the rotating plates 24 A signal device 35 is fixedly connected to the upper part of the device. The signal device 35 and the counting receiver 25 are in a straight line. When the rotating plate 24 rotates one revolution, the signal device 35 provides feedback once. A movable shaft 22 is fixedly connected to the middle of the rotating plate 24. Feedback permanent magnets 23 are snapped into the middle of both ends of the movable shaft 22. The counting receiver 25 is located on the inner wall of the branch pipe housing 18 and does not extend into the inner cavity of the branch pipe housing 18 to avoid excessive openings that may affect the airtightness of the branch pipe housing 18. When the liquid is low and the pressure is not high enough, it cannot drive the first and second waist wheels 61 to rotate. The liquid flows through the branch transition pipe 17 and then through the branch pipe housing 18 because the lower feedback device 34 is not in contact with the upper feedback device. Feeder 29 is in contact, so solenoid valve 27 is closed. When the liquid level rises, due to the limit of slot 32, the liquid level pushes the lower feedback device 34 to contact the upper feedback device 29, solenoid valve 27 opens and counts once. When the liquid can fill the inside of the branch pipe housing 18, the inner cavity of the branch pipe housing 18 is connected to multiple sets of deflection plates 21. The deflection plates 21 and the rotating plate 24 form a certain angle, so that the flowing liquid pushes the feedback permanent magnet 23 to rotate. The supporting permanent magnet 20 and the feedback permanent magnet 23 are both permanent magnets, and there is no contact or friction between them. The number of rotations is fed back to the display 3 by the counting receiver 25.

[0027] The corresponding end faces of the movable abutments 9 are adapted to the grooves 12. The movable abutments 9 are supported and held in place by the damping springs 8. The movable abutments 9 are elongated strips with a round upper part and a flat bottom. The upper parts of the two movable abutments 9 are partially locked by the first waist wheel 6, and the upper parts of the two movable abutments 9 are partially locked by the second waist wheel 61. The two damping springs 8 are compressed between the first waist wheel 6 and the movable abutments 9, and the two damping springs 8 are compressed between the second waist wheel 61 and the movable abutments 9. When rotating, the two movable abutments in the first waist wheel 6... One end of component 9 contacts the inner wall of housing 1, while one movable abutment 9 of the second 61 contacts housing 1, and the other movable abutment 9 contacts the middle of the second 61, always separating the inner cavity of housing 1. When the second 61 expands due to heat, because the damping spring 8 does not completely fill the space between the movable abutment 9 and the second 61, the movable abutment 9 can move downward, preventing the second 61 or the third 61 from completely filling the inner cavity of housing 1, which would prevent the liquid from being discharged and cause the pipe to rupture.

[0028] The acrylonitrile wheel 15 and the control claw 11 are located on the same plane. The top of the control claw 11 contacts the tooth root of the acrylonitrile wheel 15. The fact that the control claw 11 and the acrylonitrile wheel 15 are located on the same plane means that when the acrylonitrile wheel 15 rotates, the control claw 11 is always in contact with the tooth of the acrylonitrile wheel 15 at a certain instant.

[0029] Among them, the corresponding end faces of the two supporting permanent magnets 20 and the feedback permanent magnet 23 are of the same pole. The feedback permanent magnet 23 is located at the center of the supporting permanent magnets 20. The supporting permanent magnets 20 and the feedback permanent magnet 23 have a repulsive force, which makes the movable shaft 22 always suspended, avoiding frictional loss caused by contact. The repulsive force between the end faces of the feedback permanent magnet 23 and the supporting permanent magnets 20 also makes the movable shaft 22 not contact the sides when it rotates.

[0030] Working principle and usage process:

[0031] When the liquid valve is first opened, due to insufficient pressure, it cannot drive the first and second rollers 61 to rotate. The liquid only flows through the branch pipe housing 18 via the branch transition pipe 17. Because the lower feedback device 34 is not in contact with the upper feedback device 29, the solenoid valve 27 is closed. When the liquid level rises, it pushes the lower feedback device 34 to contact the upper feedback device 29, opening the solenoid valve 27 for counting. When the liquid continuously fills the interior of the branch pipe housing 18, the deflector plate 21 fixedly installed inside the branch pipe housing 18 forms a certain angle with the rotating plate 24. When the liquid deflects, it drives the movable shaft 22 to rotate. The supporting permanent magnet 20 and the feedback permanent magnet 23 are of the same pole to avoid friction caused by rotation. Because the signal device 35 and the counting receiver 25 are on a straight line, when the rotating plate... When the valve rotates once, the signal device 35 provides feedback once. When the pressure is high enough, the liquid drives the first and second 61 of the sprockets to rotate, while the movable stop 9 is always squeezed by the elastic force of the damping spring 8, so that the movable stop 9 is always in contact with the first 6, the second 61, or the housing 1 to form a sealed space. One side of the first 6 is fixedly connected to the feedback gear 7, and the rotation of the feedback gear 7 is fed back to the display 3, which accumulates the calculations. The other end of the movable gear 5 is fixedly connected to the acrylonitrile wheel 15, and the rotation direction is unidirectional. This prevents the liquid inside the pipe from flowing in the opposite direction when the valve is closed, thus preventing water hammer effect on the inner wall of the pipe. When the valve is closed, the pressure in the opposite direction is greater, and the reverse flow through the branch transition pipe 17 also avoids damage to the inner wall of the pipe.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flow detection device for a quantitative filling machine, comprising a housing (1), wherein a display (3) is fixedly connected to the front of the housing (1), a counting receiver (25) is fixedly connected to the upper part of the back of the display (3), and main transition pipes (4) are fixedly connected to both sides of the housing (1), and flanges (2) are fixedly connected to the end faces of the two main transition pipes (4), characterized in that: A first waist wheel (6) is movably sleeved in the middle of the inner cavity of the housing (1). Below the first waist wheel (6), a second waist wheel (61) is movably sleeved with the housing (1). One end of the second waist wheel (61) is fixedly connected to a second movable gear (51). One end of the first waist wheel (6) is fixedly connected to a first movable gear (5) that meshes with the second movable gear (51). The other end of the first waist wheel (6) is fixedly connected to a feedback gear (7). The end of the feedback gear (7) away from the first waist wheel (6) is inserted into the display (3). Grooves (12) are provided on both sides of the first waist wheel (6) and the second waist wheel (61). The interior is fixedly equipped with several sets of equidistantly arranged shock-absorbing springs (8). One end of each shock-absorbing spring (8) is fixedly connected to a movable abutment (9) that is movably sleeved with the groove (12). A flow direction indicator (16) is fixedly connected to the front of the housing (1). A branch transition pipe (17) is fixedly connected to the upper part of the two main transition pipes (4). A branch pipe housing (18) is fixedly connected to the middle of the branch transition pipe (17). The inner wall of the branch pipe housing (18) is snapped with the counting receiver (25). A solenoid valve (27) is snapped with one side of the branch pipe housing (18). A hollow groove (28) is opened in the middle of the branch pipe housing (18). An upper feedback device (29) is snapped onto one side of the bottom of the hollow groove (28). An annular block (30) is fixedly connected to the upper end of the hollow groove (28) and fixedly connected to the branch pipe housing (18). A moving shaft (31) is fixedly connected to the middle of the annular block (30). A slot (32) is opened on one side of the annular block (30). A sealing valve (33) is movably sleeved at the bottom of the moving shaft (31) and movably sleeved with the slot (32). A lower feedback device (34) is fixedly connected to one side of the sealing valve (33) on the same side as the upper feedback device (29). Multiple sets of deflection plates (21) are fixedly connected to both ends of the inner cavity of the branch pipe housing (18). A support member (19) is fixedly connected to the middle of each of the two sets of deflection plates (21). A support permanent magnet (20) is snapped into the middle of the corresponding end face of the two support members (19). A guide shaft (26) fixedly connected to the deflection plate (21) is fixedly connected to the end of each of the two support members (19) away from the support permanent magnet (20). A plurality of rotating plates (24) are provided in the middle of the branch pipe housing (18). A signal device (35) is fixedly connected to the upper part of one of the rotating plates (24). A movable shaft (22) is fixedly connected to the middle of the rotating plate (24). A feedback permanent magnet (23) is snapped into the middle of both ends of the movable shaft (22).

2. The flow detection device for a quantitative filling machine according to claim 1, characterized in that: A second housing (13) is fixedly installed in the middle of the back of the first housing (1). A fixed rod (10) is fixedly connected to the upper part of the inner cavity of the second housing (13). A control claw (11) is movably sleeved on the side of the fixed rod (10). A return spring (14) is fixedly connected to the middle of the control claw (11) and fixedly connected to the other end of the second housing (13). A nitrile wheel (15) is fixedly connected to the end of the first movable gear (5) away from the first waist wheel (6).

3. The flow detection device for a quantitative filling machine according to claim 1, characterized in that: The corresponding end faces of the movable abutment (9) are all adapted to the groove (12).

4. The flow detection device for a quantitative filling machine according to claim 2, characterized in that: The acrylonitrile wheel (15) and the control claw (11) are located on the same plane, and the top of the control claw (11) contacts the tooth root of the acrylonitrile wheel (15).

5. The flow detection device for a quantitative filling machine according to claim 1, characterized in that: The corresponding end faces of the supporting permanent magnet (20) and the feedback permanent magnet (23) are of the same pole, and the feedback permanent magnet (23) is located at the center of the supporting permanent magnet (20).

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