Metering device of liquid filling machine

Abstract

The utility model discloses a metering device of a liquid filling machine, which comprises a base, a pressurizing device and a metering and discharging device, and the pressurizing device and the metering and discharging device are both used for being installed on the base. Wherein the supercharging device comprises a telescopic assembly and a piston cylinder, and the telescopic assembly and the piston cylinder are both installed on the base; a piston rod is slidably arranged in the piston cylinder, a pressure relief opening is formed in the piston cylinder, and a piston head is arranged at the end of the piston rod and is in sliding sealing connection with the inner surface of the piston cylinder; the fixed end of the telescopic assembly is installed on the base, the movable end of the telescopic assembly is connected with the end of the piston rod, a three-way pipe is arranged at the end of the piston cylinder, one-way valves are arranged in the other two ends of the three-way pipe, and the other two ends are connected with a liquid raw material barrel and a liquid storage tank respectively. The utility model aims to solve the problem that in the prior art, a metering device of a filling machine can only carry out filling on the same metering quantity, the metering quantity cannot be adjusted, and the application range of the metering device is small.

Description

Technical Field

[0001] The utility model relates to the technical field of metering devices, in particular to a metering device of a liquid filling machine. Background Art

[0002] Metering devices are the totality of measuring instruments and auxiliary equipment necessary to determine the measured value. They play a vital role in various industrial and commercial applications to ensure the accuracy and reliability of measurements. Metering devices in liquid filling machines usually use flow meters or weight meters for precise measurement. Flow meters calculate the flow rate by measuring the speed and cross-sectional area of ​​the liquid passing through the pipeline, while weight meters calculate the weight of the liquid through weighing devices. The application of these metering devices and methods in liquid filling machines has significantly improved the filling accuracy and efficiency, meeting the needs of different industrial fields,

[0003] The utility model patent with application number: CN202321064257.4 and publication number: CN219707375U (hereinafter referred to as "prior art 1") discloses a metering device for a filling machine, including a transfer chamber, a accommodating chamber is arranged at the lower part of the transfer chamber, a feed piston is arranged on one side of the accommodating chamber, the feed piston is dynamically connected to a feed piston rod, and the feed piston rod is arranged in a power piston cylinder; a lead-out pipe is arranged on the side of the accommodating chamber.

[0004] The specification of prior art 1 discloses a metering device for a filling machine. When in use, the metering amount is controlled by feeding the piston rod. However, in actual application, only a single value can be measured and the metering size cannot be adjusted, so the scope of application is small. Summary of the invention

[0005] The utility model provides a metering device for a liquid filling machine, aiming to solve the problem in the prior art that the metering device for the filling machine can only fill the same metering amount and cannot adjust the size of the metering amount, thereby resulting in a small application range of the metering device.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A metering device for a liquid filling machine comprises a base, a pressure boosting device and a metering discharging device, wherein the pressure boosting device and the metering discharging device are both used to be installed on the base;

[0008] The booster device includes a telescopic assembly and a piston cylinder, both of which are mounted on a base; a piston rod is slidably arranged inside the piston cylinder, a pressure relief port is arranged on the piston cylinder, a piston head is arranged at the end of the piston rod, and the piston head is slidably and sealedly connected to the inner surface of the piston cylinder; the fixed end of the telescopic assembly is mounted on the base, the movable end is connected to the end of the piston rod, a three-way pipe is arranged at the end of the piston cylinder, and one-way valves are arranged inside the other two ends of the three-way pipe, and the other two ends are respectively connected to a liquid raw material barrel and a liquid storage tank;

[0009] The metering and discharging device includes a limit block, a stopper and an adjusting assembly. The limit block is slidably mounted on the base. The adjusting assembly is used to adjust and fix the position of the limit block. The stopper is arranged at the end of the movable end of the telescopic assembly, and the stopper is used to contact the limit block.

[0010] Furthermore, a plurality of mounting plates are arranged on the base, and the fixed end of the telescopic assembly, the piston cylinder and the three-way pipe are detachably connected to the mounting plates.

[0011] Furthermore, the telescopic component is specifically a double-headed cylinder having two movable ends, the two movable ends are used to move in the same direction, one of the movable ends is connected to the piston rod, and the other movable end is connected to the stopper.

[0012] Furthermore, the adjustment assembly includes a mounting seat, a handwheel and a screw, one end of the screw is rotatably mounted on the mounting seat, and the other end is rotatably mounted on the mounting plate, the handwheel is mounted on the end of the screw, a threaded hole is provided on the limit block, the screw is threadably matched with the threaded hole, and the bottom surface of the limit block is used to slide close to the base.

[0013] Furthermore, a dovetail slide rail is provided at the bottom of the limiting block, and a dovetail slide groove is provided on the base, and the dovetail slide rail and the dovetail slide groove are slidably matched.

[0014] Furthermore, a guide rod is provided on the mounting seat, and guide holes are provided on the limit block and the top block. The axes of the guide holes on the limit block and the top block are colinear, and the guide holes are slidably matched with the guide rod.

[0015] Furthermore, a sliding sleeve is provided on the guide hole, and the sliding sleeve is slidably matched with the guide rod.

[0016] Furthermore, the mounting plate includes a first mounting plate and a second mounting plate, there are two first mounting plates, and the two first mounting plates are connected to the fixed end of the telescopic assembly; the second mounting plate includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are provided with a clearance groove, the clearance groove is used to buckle on the piston cylinder, the first clamping plate is provided with a threaded hole, the second clamping plate is provided with a through hole, a mounting rod is rotatably provided in the through hole, the end of the mounting rod is provided with a thread, and the mounting rod is threadedly matched with the threaded hole through the thread.

[0017] Furthermore, the three-way pipe has three passages, namely A, B, and C. The A end is arranged inside the give way groove and sealed with the piston cylinder, the B end is used to connect with the liquid raw material barrel, and the C end is used to connect with the liquid storage tank. The one-way valve is used to be installed at both ends of B and C.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model mainly comprises a base, a pressure-boosting device and a metering and discharging device, both of which are used to be installed on the base; in actual use, the staff puts the liquid to be measured in the liquid raw material barrel, and due to the existence of the one-way valve, the liquid will not flow into the three-way pipe. At this time, the control adjustment component controls the limit block to the position corresponding to the required metering. At this time, the piston head is located at the left extreme position of the piston cylinder. When sucking liquid, the staff controls the active end of the telescopic component to move away from the three-way pipe. At this time, negative pressure is formed inside the piston cylinder and the three-way pipe, so that the one-way valve at one end of the liquid raw material barrel opens, and the one-way valve at one end of the liquid storage tank closes. At this time, the liquid raw material flows from the liquid raw material barrel into the three-way pipe and the piston cylinder. At this time, the interior of the piston cylinder is filled with gas and liquid. At this time, the pressure relief port is opened, and the one-way valve is closed. At this time, the push The movable end of the telescopic assembly moves toward the direction close to the three-way pipe. At this time, the gas is discharged from the pressure relief port until a little liquid overflows from the pressure relief port, and then the pressure relief port is closed. At this time, the movable end of the telescopic assembly is controlled to move away from the three-way pipe again to ensure that the three-way pipe and the piston cylinder are filled with liquid; then the piston rod is pushed. At this time, positive pressure is formed inside the piston cylinder and the three-way pipe, so that the one-way valve at one end of the liquid storage tank is opened by the positive pressure, and the one-way valve at one end of the liquid raw material barrel is closed by the positive pressure. At this time, as the movable end of the telescopic assembly slowly moves toward the direction of the three-way pipe, the liquid enters the liquid storage tank from the three-way pipe until the stop block contacts the limit block, and the piston rod is stopped. At this time, the one-way valves at both ends of the three-way valve are closed, completing the metering of the liquid; the advantage of this setting is that different doses of liquid can be measured by changing the position of the stop block, and it has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2It is a partial cross-sectional view of the utility model.

[0023] In the figure, 101-base, 102-telescopic assembly, 103-piston cylinder, 104-piston rod, 105-piston head, 106-tee pipe, 107-check valve, 108-limit block, 109-stop block, 110-mounting seat, 111-handwheel, 112-screw, 113-threaded hole, 114-guide rod, 115-guide hole, 116-sleeve, 117-first mounting plate, 118-first clamping plate, 119-second clamping plate. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the embodiments, which are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in the field without creative work are all within the protection scope of the present invention.

[0025] See also Figure 1 as well as Figure 2 As shown, this embodiment discloses a metering device of a liquid filling machine, including a base 101, a booster device and a metering and discharging device, and the booster device and the metering and discharging device are both used to be installed on the base 101;

[0026] The booster device includes a telescopic assembly 102 and a piston cylinder 103, both of which are mounted on a base 101; a piston rod 104 is slidably disposed inside the piston cylinder 103, a pressure relief port is disposed on the piston cylinder 103, a piston head 105 is disposed at the end of the piston rod 104, and the piston head 105 is slidably and sealingly connected to the inner surface of the piston cylinder 103; the fixed end of the telescopic assembly 102 is mounted on the base 101, and the movable end is connected to the end of the piston rod 104, a three-way pipe 106 is disposed at the end of the piston cylinder 103, and one-way valves 107 are disposed inside the other two ends of the three-way pipe 106, and the other two ends are respectively connected to the liquid raw material barrel and the liquid storage tank;

[0027] The metering and discharging device includes a limit block 108, a stop block 109 and an adjusting assembly. The limit block 108 is slidably mounted on the base 101. The adjusting assembly is used to adjust the position of the limit block 108 and fix the position of the limit block 108. The stop block 109 is arranged at the end of the movable end of the telescopic assembly 102, and the stop block 109 is used to contact the limit block 108.

[0028] The utility model mainly comprises a base 101, a pressure-boosting device and a metering and discharging device, both of which are used to be installed on the base 101; in actual use, the staff puts the liquid to be measured in the liquid raw material barrel, and due to the existence of the one-way valve 107, the liquid will not flow into the three-way pipe 106. At this time, the control adjustment component controls the limit block 108 to the position corresponding to the required measurement. At this time, the piston head 105 is located at the left extreme position of the piston cylinder 103. When sucking liquid, the staff controls the movable end of the telescopic component 102 to move away from the three-way pipe 106. At this time, negative pressure is formed inside the piston cylinder 103 and the three-way pipe 106, so that the one-way valve 107 at one end of the liquid raw material barrel is opened, and the one-way valve 107 at one end of the liquid storage tank is closed. At this time, the liquid raw material flows from the liquid raw material barrel into the three-way pipe 106 and the piston cylinder 103. At this time, the piston cylinder 103 is filled with gas and liquid. At this time, the pressure relief port is opened, and the one-way valve 107 is closed. At this time, the telescopic component 102 is pushed The movable end of the component 102 moves toward the direction close to the three-way pipe 106. At this time, the gas is discharged from the pressure relief port until a little bit of liquid overflows from the pressure relief port, and then the pressure relief port is closed. At this time, the movable end of the telescopic component 102 is controlled to move away from the three-way pipe 106 to ensure that the three-way pipe 106 and the piston cylinder 103 are filled with liquid; then the piston rod 104 is pushed, and a positive pressure is formed inside the piston cylinder 103 and the three-way pipe 106, so that the one-way valve 107 at one end of the liquid storage tank is opened by the positive pressure, and the one-way valve 107 at one end of the liquid raw material barrel is closed by the positive pressure. At this time, as the movable end of the telescopic component 102 slowly moves toward the direction of the three-way pipe 106, the liquid enters the liquid storage tank from the three-way pipe 106 until the stop block 109 contacts the limit block 108, and the piston rod 104 is stopped. At this time, the one-way valves 107 at both ends of the three-way valve are closed, and the metering of the liquid is completed; the advantage of this arrangement is that different doses of liquid can be metered by changing the position of the stop block 109, and the scope of application is wide.

[0029] In some embodiments, a plurality of mounting plates are disposed on the base 101 , and the fixed end of the telescopic assembly 102 , the piston cylinder 103 , and the three-way pipe 106 are detachably connected to the mounting plates.

[0030] In actual use, the purpose of providing the mounting plate is to facilitate the fixed installation of the piston cylinder 103 , the telescopic assembly 102 and the three-way pipe 106 .

[0031] In some embodiments, the telescopic assembly 102 is specifically a double-headed cylinder having two movable ends, which are used to move in the same direction, one of which is connected to the piston rod 104 , and the other is connected to the stopper 109 .

[0032] In actual use, the double-headed cylinder is a double-headed single-acting cylinder in the prior art. The cylinder has only one movable rod, but the movable rod extends from both ends of the cylinder and moves in one direction. This technology is prior art and will not be described in detail here. When in use, when one end of the movable end pushes the piston rod 104, the other end of the movable end moves toward the direction close to the limit block 108.

[0033] In some embodiments, the adjustment assembly includes a mounting base 110, a handwheel 111 and a screw 112. One end of the screw 112 is rotatably mounted on the mounting base 110, and the other end is rotatably mounted on the mounting plate. The handwheel 111 is mounted on the end of the screw 112. A threaded hole 113 is provided on the limit block 108. The screw 112 is threadedly matched with the threaded hole 113. The bottom surface of the limit block 108 is used to slide close to the base 101.

[0034] In some embodiments, a dovetail slide rail is disposed at the bottom of the limiting block 108, and a dovetail slide groove is disposed on the base 101, and the dovetail slide rail and the dovetail slide groove are slidably matched.

[0035] During actual use, when it is necessary to adjust the position of the limit block 108, the staff rotates the handwheel 111 to drive the screw 112 to rotate. After the screw 112 rotates, it cooperates with the threaded hole 113 on the limit block 108. Therefore, under the cooperation of the dovetail slide rail and the dovetail slide groove, the screw 112 rotates and drives the limit block 108 to reciprocate on the base 101, thereby realizing the adjustment of the position of the limit block 108.

[0036] In some embodiments, a guide rod 114 is further provided on the mounting seat 110, and guide holes 115 are provided on the limit block 108 and the top block. The axes of the guide holes 115 on the limit block 108 and the top block are colinear, and the guide holes 115 are slidably matched with the guide rod 114.

[0037] In actual use, the purpose of providing the guide rod 114 is to make the limit block 108 and the stop block 109 more stable when sliding.

[0038] In some embodiments, a sliding sleeve 116 is disposed on the guide hole 115 , and the sliding sleeve 116 is slidably matched with the guide rod 114 .

[0039] In actual use, the purpose of providing the sliding sleeve 116 is to make the sliding between the guide rod 114 and the guide hole 115 smoother.

[0040] In some embodiments, the mounting plate includes a first mounting plate 117 and a second mounting plate. There are two first mounting plates 117, and the two first mounting plates 117 are connected to the fixed end of the telescopic assembly 102; the second mounting plate includes a first clamping plate 118 and a second clamping plate 119. The first clamping plate 118 and the second clamping plate 119 are provided with a clearance groove, and the clearance groove is used to buckle on the piston cylinder 103. The first clamping plate 118 is provided with a threaded hole 113, and the second clamping plate 119 is provided with a through hole. A mounting rod is rotatably arranged in the through hole, and a thread is provided on the end of the mounting rod, and the mounting rod is threadedly matched with the threaded hole 113 through the thread.

[0041] In actual use, when installing the piston cylinder 103, it is necessary to place the piston cylinder 103 on the yield groove on the first clamping plate 118, and then align the mounting rod with the threaded hole 113. At this time, rotate the mounting rod (the mounting rod and the second clamping plate 119 will not move radially, and the mounting rod and the second clamping plate 119 only have a rotational relationship, not a sliding relationship). Since there is a thread on the mounting rod, when the mounting rod rotates, it will drive the first clamping plate 118 to approach the second clamping plate 119. Finally, the first clamping plate 118 and the second clamping plate 119 clamp the piston cylinder 103, thereby completing the fixation of the piston cylinder 103; the function of the first mounting plate 117 is to install the telescopic assembly 102.

[0042] As an optional implementation, in this embodiment, there are two telescopic components 102 and two piston cylinders 103 , and one telescopic component 102 corresponds to one piston cylinder 103 .

[0043] In some embodiments, the three-way pipe 106 has three passages, namely A, B, and C ends, wherein the A end is arranged inside the give way groove and is sealedly connected to the piston cylinder 103, the B end is used to connect to the liquid raw material barrel, and the C end is used to connect to the liquid storage tank, and the one-way valve 107 is used to be installed at both ends B and C.

[0044] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0046] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metering device for a liquid filling machine, characterized in that: It comprises a base (101), a pressurizing device and a metering and discharging device, wherein the pressurizing device and the metering and discharging device are both used to be installed on the base (101); The booster device comprises a telescopic assembly (102) and a piston cylinder (103), both of which are mounted on a base (101); a piston rod (104) is slidably arranged inside the piston cylinder (103), a pressure relief port is arranged on the piston cylinder (103), a piston head (105) is arranged at the end of the piston rod (104), and the piston head (105) is slidably and sealingly connected to the inner surface of the piston cylinder (103); a fixed end of the telescopic assembly (102) is mounted on the base (101), and a movable end is connected to the end of the piston rod (104); a three-way pipe (106) is arranged at the end of the piston cylinder (103), and one-way valves (107) are arranged inside the other two ends of the three-way pipe (106), and the other two ends are respectively connected to a liquid raw material barrel and a liquid storage tank; The metering and discharging device comprises a limit block (108), a stop block (109) and an adjusting assembly. The limit block (108) is slidably mounted on a base (101). The adjusting assembly is used to adjust the position of the limit block (108) and fix the position of the limit block (108). The stop block (109) is arranged at the end of the movable end of the telescopic assembly (102). The stop block (109) is used to contact the limit block (108).

2. The metering device of a liquid filling machine according to claim 1, characterized in that: A plurality of mounting plates are arranged on the base (101), and the fixed end of the telescopic assembly (102), the piston cylinder (103) and the three-way pipe (106) are detachably connected to the mounting plates.

3. The metering device of a liquid filling machine according to claim 1, characterized in that: The telescopic assembly (102) is specifically a double-headed cylinder having two movable ends, the two movable ends being used to move in the same direction, one of the movable ends being connected to the piston rod (104), and the other movable end being connected to the stopper (109).

4. The metering device of a liquid filling machine according to claim 1, characterized in that: The adjustment assembly comprises a mounting seat (110), a hand wheel (111) and a screw rod (112); one end of the screw rod (112) is rotatably mounted on the mounting seat (110), and the other end is rotatably mounted on the mounting plate; the hand wheel (111) is mounted on the end of the screw rod (112); a threaded hole (113) is arranged on the limit block (108); the screw rod (112) and the threaded hole (113) are threadedly matched; and the bottom surface of the limit block (108) is used to slide against the base (101).

5. The metering device of a liquid filling machine according to claim 4, characterized in that: A dovetail slide rail is arranged at the bottom of the limiting block (108), and a dovetail slide groove is arranged on the base (101), and the dovetail slide rail and the dovetail slide groove are slidably matched.

6. The metering device of a liquid filling machine according to claim 4, characterized in that: A guide rod (114) is also provided on the mounting seat (110), and guide holes (115) are provided on the limit block (108) and the top block. The axes of the guide holes (115) on the limit block (108) and the top block are colinear, and the guide holes (115) and the guide rod (114) are slidably matched.

7. The metering device of a liquid filling machine according to claim 6, characterized in that: A sliding sleeve (116) is provided on the guide hole (115), and the sliding sleeve (116) is slidably matched with the guide rod (114).

8. The metering device of a liquid filling machine according to claim 1, characterized in that: The mounting plate includes a first mounting plate (117) and a second mounting plate. There are two first mounting plates (117). The two first mounting plates (117) are connected to the fixed end of the telescopic component (102); the second mounting plate includes a first clamping plate (118) and a second clamping plate (119). The first clamping plate (118) and the second clamping plate (119) are provided with a clearance groove, and the clearance groove is used to buckle on the piston cylinder (103). The first clamping plate (118) is provided with a threaded hole (113), and the second clamping plate (119) is provided with a through hole. A mounting rod is rotatably arranged in the through hole, and a thread is arranged at the end of the mounting rod. The mounting rod is threadedly matched with the threaded hole (113) through the thread.

9. The metering device of a liquid filling machine according to claim 1, characterized in that: The three-way pipe (106) has three passages, namely A, B and C ends, wherein the A end is arranged inside the give way groove and is sealedly connected to the piston cylinder (103), the B end is used to connect to the liquid raw material barrel, and the C end is used to connect to the liquid storage tank. The one-way valve (107) is used to be installed at both ends B and C.

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