Multi-pump linkage high-precision metering and filling equipment

Abstract

The invention relates to multi-pump linkage high-precision metering filling equipment which comprises a mounting frame, a driving motor, a transmission shaft, a crank-link mechanism, a pushing assembly, a pump body assembly and a feeding and discharging assembly. The driving motor and the transmission shaft are fixed on the mounting frame; one end of the crank-link mechanism is connected with the driving motor, and the other end is connected with the transmission shaft; the N pushing assemblies are arranged between the transmission shaft and the pump body assembly in parallel; the N pump body assemblies are arranged on the mounting frame in parallel and connected with the pushing assemblies in a one-to-one correspondence mode. The N feeding and discharging assemblies are communicated with the pump body assembly. According to the scheme, a linkage structure that a single motor drives multiple pump bodies can be achieved, the occupied space is reduced, the cost is reduced, a dual-adjustment mechanism can be formed, unified adjustment of the loading amount of all the pump bodies is supported, independent and accurate fine adjustment of the single pump body can be achieved, and meanwhile the working efficiency is improved. The problem that the metering precision of a traditional pump body is reduced due to abrasion and aging of a sealing rubber ring can be effectively solved, and the practicability of equipment is enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filling equipment, in particular to a multi-pump linkage high-precision metering filling equipment. BACKGROUND

[0002] Filling equipment is an indispensable key equipment in the production process of liquid products, and is widely used in food, beverage, chemical, pharmaceutical and other industries. Its core is to accurately inject liquid into various packaging containers such as bottles, cans, bags and pipes according to the requirements of quantitative, constant volume or constant weight through a pre-set mechanical structure, control logic and conveying system.

[0003] The current market filling equipment generally adopts an independent driving mode of "a single servo motor corresponding to a single pump body", which not only leads to large equipment installation space occupation, high overall purchase and operation cost, but also is difficult to realize unified coordination control of multiple pumps. At the same time, traditional pump bodies rely on sealing rubber rings for sealing and transmission, and the rubber rings are prone to wear and aging after long-term use, which will directly affect the stability of the metering accuracy. In addition, the existing filling equipment cannot flexibly adapt to the unified standard and individual difference requirements in multi-station filling, and the overall applicability and practicality are insufficient, which cannot meet the needs of modern industrial production for high efficiency, precision and flexibility.

[0004] Therefore, it is urgent to design a multi-pump linkage high-precision metering filling equipment, which can realize a linkage structure of a single motor driving multiple pump bodies, greatly reduce the occupied space, greatly reduce the cost of equipment purchase and maintenance, and form a double regulation mechanism to support unified adjustment of the amount of all pump bodies and independent precise fine adjustment of a single pump body, significantly improve the filling efficiency and precision, and effectively avoid the problem of decreased metering accuracy caused by wear and aging of the sealing rubber ring of the traditional pump body, ensuring the high-precision metering performance of long-term filling and enhancing the flexibility and practicality of the equipment. SUMMARY

[0005] In order to overcome the problems in the related art, the present application provides a multi-pump linkage high-precision metering filling equipment, which can realize a linkage structure of a single motor driving multiple pump bodies, greatly reduce the occupied space, greatly reduce the cost of equipment purchase and maintenance, and form a double regulation mechanism to support unified adjustment of the amount of all pump bodies and independent precise fine adjustment of a single pump body, significantly improve the filling efficiency and precision, and effectively avoid the problem of decreased metering accuracy caused by wear and aging of the sealing rubber ring of the traditional pump body, ensuring the high-precision metering performance of long-term filling and enhancing the flexibility and practicality of the equipment.

[0006] This application provides a high-precision metering and filling device with multiple pumps linked together, including a mounting frame, a drive motor, a transmission shaft, a crank-connecting rod mechanism, a pushing assembly, a pump body assembly, and an infeed / discharge assembly. The drive motor is fixed to the mounting frame via a motor mounting plate. The transmission shaft is fixed to the mounting frame via a bearing seat and is located on one side of the drive motor. One end of the crank-connecting rod mechanism is connected to the output end of the drive motor, and the other end is connected to the transmission shaft via a transmission swing arm. N pushing assemblies are arranged in parallel between the transmission shaft and the pump body assembly, and one end of each pushing assembly is connected to the transmission shaft via an adjusting swing arm, and the other end is connected to the pump body assembly. N pump body assemblies are arranged in parallel on the mounting frame and are connected to the pushing assemblies one-to-one. N infeed / discharge assemblies are respectively arranged at one end of the pump body assembly and are connected to the pump body assembly.

[0007] In a preferred embodiment of this application, the crank-connecting rod mechanism includes an eccentric wheel shaft, an eccentric wheel disc, a connecting rod, and a spacer; the eccentric wheel shaft is connected to the output end of the drive motor; the eccentric wheel disc is sleeved on the eccentric wheel shaft; one end of the connecting rod is connected to the eccentric wheel disc via a pin, and the other end is connected to the transmission swing arm via a pin; the spacer is sleeved on the pin.

[0008] In a preferred embodiment of this application, the transmission swing arm is generally block-shaped, and both ends of the transmission swing arm are provided with mounting through holes; wherein, one of the mounting through holes is connected to the connecting rod by a pin, and the other mounting through hole is connected to the transmission shaft.

[0009] In a preferred embodiment of this application, the pushing assembly includes a pushing link, a linear slide rail, and a pushing part; one end of the pushing link is connected to the adjusting swing arm, and the other end is connected to the pushing part; the track of the linear slide rail is fixedly mounted on the mounting bracket, and the slider of the linear slide rail is slidably mounted on the track; the pushing part is mounted on the slider and is connected to the pump body assembly.

[0010] In a preferred embodiment of this application, the pushing part includes a first connecting block, a second connecting block, and a third connecting block; the first connecting block is disposed on the slider and fixedly connected to the slider; the second connecting block and the third connecting block are respectively vertically disposed at both ends of the first connecting block and fixedly connected to the first connecting block, and are respectively used to connect the pushing rod and the pump body assembly.

[0011] In a preferred embodiment of this application, the pump body assembly includes a pump body fixing plate, a ceramic pump body, a piston portion, and an outlet connector; the pump body fixing plate is fixedly mounted on the mounting bracket; the ceramic pump body is fixedly mounted on the pump body fixing plate, and the ceramic pump body has a movable cavity; the piston portion is movably mounted in the movable cavity of the ceramic pump body and is connected to the pushing assembly; the outlet connector is located on one side of the ceramic pump body and communicates with the infeed / outfeed assembly.

[0012] In a preferred embodiment of this application, the piston portion includes a first piston rod, a second piston rod, a floating joint, a plunger head, and a third piston rod; the first piston rod, the floating joint, the second piston rod, and the third piston rod are arranged sequentially from the outside to the inside; wherein, one end of the first piston rod is connected to the pushing assembly, and the other end is connected to one end of the second piston rod through the floating joint; the plunger head is slidably disposed within the movable cavity; the other end of the second piston rod is connected to the plunger head; and the third piston rod is disposed within the plunger head.

[0013] In a preferred embodiment of this application, the piston portion further includes a first sealing ring and a second sealing ring; the first sealing ring is disposed between the second piston rod and the plunger head; the second sealing ring is disposed between the third piston rod and the plunger head.

[0014] In a preferred embodiment of this application, the inlet / outlet assembly includes a three-way connector, a first check valve, and a second check valve; the three-way connector is disposed on one side of the pump body assembly and is connected and communicates with the outlet connector; the first check valve and the second check valve are respectively disposed at the upper and lower ends of the three-way connector and are used to control the inlet / outlet direction of the material.

[0015] In a preferred embodiment of this application, the adjusting arm includes a body, an end cap, an adjusting block, a lead screw, and a nut. The body has a connecting through hole and a strip-shaped slot. The connecting through hole is located at one end of the body for a secure connection with the drive shaft. The strip-shaped slot is located at the other end of the body. The end cap is located at the opening of the strip-shaped slot and is fixedly connected to the end of the body. The adjusting block is movably disposed within the strip-shaped slot and is connected to the pushing rod. The lead screw passes through the end cap and is fixedly connected to the adjusting block. The nut is threaded onto the lead screw and is located outside the end cap.

[0016] The technical solution provided in this application has the following beneficial effects: (1) The high-precision metering and filling equipment with multiple pump linkage of this application includes a mounting frame, a drive motor, a transmission shaft, a crank-connecting rod mechanism, a push assembly, a pump body assembly, and an infeed / outfeed assembly. By setting up multiple pump body assemblies and utilizing the synergy of the transmission shaft, crank-connecting rod mechanism, and push assembly to achieve a linkage structure where a single motor drives multiple pump bodies, multiple filling operations can be performed simultaneously, greatly improving filling efficiency. Compared with the prior art, it greatly reduces the demand for drive motors, thereby significantly reducing the overall space occupied and effectively reducing costs.

[0017] (2) By setting the adjustable swing arm, the pushing stroke of each pushing component can be finely adjusted, thereby achieving precise and flexible control under different filling requirements. It can also form a dual adjustment mechanism, which can support the overall unified and rapid adjustment of the filling volume of all pumps, and can also achieve independent and precise fine adjustment of a single pump. This not only greatly improves filling efficiency and metering accuracy, but also greatly enhances the equipment's adaptability to different ranges and multi-station personalized filling requirements, meeting diverse filling scenarios and significantly improving the overall flexibility and practicality of the equipment.

[0018] (3) By using ceramic pump body and piston part made of ceramic material, the problem of reduced metering accuracy caused by wear and aging of sealing rings in traditional pump body is effectively avoided, ensuring high-precision metering performance for long-term filling. At the same time, by setting multi-segment connected piston rod, it is not only easy to process and manufacture, but also less likely to cause stress damage to ceramic during use.

[0019] (4) By setting N pushing components and using linear slide rails to ensure that the swing of the adjusting arm can be converted into linear motion, each pump body can obtain uniform power and improve the stability of the motion. By setting a three-way connector, a first check valve and a second check valve, the direction of material inflow and outflow is precisely controlled, which not only prevents material backflow, but also ensures the continuity and stability of filling, which not only improves filling efficiency, but also greatly reduces material waste.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0021] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0022] Figure 1 This is a schematic diagram of the structure of a high-precision metering and filling equipment with multiple pumps linked together, as shown in the embodiments of this application; Figure 2 yes Figure 1Enlarged diagram of A in the middle; Figure 3 This is a schematic diagram of the drive motor and crank-connecting rod mechanism shown in the embodiments of this application; Figure 4 This is a schematic diagram of the pump body assembly shown in an embodiment of this application; Figure 5 This is a cross-sectional schematic diagram of the pump body assembly shown in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the adjusting swing arm shown in the embodiment of this application.

[0023] Explanation of reference numerals in the attached figures: 1. Mounting bracket; 2. Drive motor; 3. Transmission shaft; 4. Crank-connecting rod mechanism; 41. Eccentric wheel shaft; 42. Eccentric wheel disc; 43. Connecting rod; 44. Spacer; 45. Pin; 5. Push assembly; 51. Push connecting rod; 52. Linear slide rail; 521. Track; 522. Slider; 53. Pushing part; 531. First connecting block; 532. Second connecting block; 533. Third connecting block; 6. Pump body assembly; 61. Pump body fixing plate; 62. Ceramic pump body; 621. Movable cavity; 63. 631. Plug; 632. First piston rod; 633. Second piston rod; 634. Floating joint; 635. Plunger head; 636. Third piston rod; 637. First sealing ring; 638. Second sealing ring; 64. Outlet joint; 7. Inlet / outlet assembly; 71. T-joint; 72. First check valve; 73. Second check valve; 8. Transmission swing arm; 9. Adjusting swing arm; 91. Body; 911. Connecting through hole; 912. Strip-shaped slot; 92. End cap; 93. Adjusting block; 94. Lead screw; 95. Nut. Detailed Implementation

[0024] Preferred embodiments of the present application will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0025] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0026] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0027] Currently, most filling equipment on the market adopts an independent drive mode of "one servo motor corresponding to one pump body." This not only results in a large space occupation and high overall purchase and operating costs, but also makes it difficult to achieve unified and coordinated control of multiple pumps. Furthermore, traditional pump bodies rely heavily on sealing rings for sealing and transmission; these rings are prone to wear and aging over long-term use, directly affecting the stability of metering accuracy. In addition, existing filling equipment cannot flexibly adapt to the uniform standards and individual differences required for multi-station filling, resulting in insufficient overall applicability and practicality, failing to meet the demands of modern industrial production for high efficiency, precision, and flexibility.

[0028] To address the aforementioned issues, this application provides a high-precision filling device with multi-pump linkage, which enables a single motor to drive multiple pumps in a linked structure, significantly reducing space requirements and greatly lowering equipment purchase and maintenance costs. It also features a dual adjustment mechanism, supporting both unified adjustment of the filling volume of all pumps and independent, precise fine-tuning of individual pumps, significantly improving filling efficiency and accuracy. Furthermore, it effectively avoids the problem of decreased metering accuracy caused by wear and aging of sealing rings in traditional pumps, ensuring high-precision metering performance for long-term filling and enhancing the flexibility and practicality of the equipment.

[0029] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings. Example

[0030] Please see Figures 1-6The high-precision metering and filling equipment with multiple pumps in this application includes a mounting frame 1, a drive motor 2, a transmission shaft 3, a crank-connecting rod mechanism 4, a pushing assembly 5, a pump body assembly 6, and an infeed / discharge assembly 7, which are arranged sequentially. The drive motor 2 is fixed to the mounting frame 1 via a motor mounting plate, providing stable power for the entire equipment's operation. Its power and speed can be flexibly adjusted according to actual filling requirements. The transmission shaft 3 is fixed to the mounting frame 1 via a bearing seat and is located to one side of the drive motor 2, driving the pushing assembly 5. One end of the crank-connecting rod mechanism 4 is connected to the output end of the drive motor 2, and the other end is connected to the transmission shaft 3 via a transmission swing arm 8, smoothly and accurately transmitting the power of the drive motor 2 to the transmission shaft 3. N push components 5 are arranged in parallel between the drive shaft 3 and the pump body assembly 6. One end of each push component 5 is connected to the drive shaft 3 via an adjusting swing arm 9, and the other end is connected to the pump body assembly 6. This converts the rotational motion of the drive shaft 3 into the linear reciprocating motion of the pump body assembly 6, achieving precise extraction and filling of the liquid. N pump body assemblies 6 are arranged in parallel on the mounting frame 1 and are connected one-to-one with each push component 5, allowing for simultaneous performance of multiple filling operations and improving filling efficiency. N inlet / outlet components 7 are respectively located on one side of the pump body assembly 6 and are connected to it. These components control the inlet and outlet of the material, preventing backflow during extraction and filling.

[0031] For example, the crank-connecting rod mechanism 4 includes an eccentric shaft 41, an eccentric disc 42, a connecting rod 43, and a spacer 44. The eccentric shaft 41 is connected to the output end of the drive motor 2. The eccentric disc 42 is sleeved on the eccentric shaft 41 and rotates with the rotation of the eccentric shaft 41. One end of the connecting rod 43 is connected to the eccentric disc 42 via a pin 45, and the other end is connected to the transmission swing arm 8 via a pin 45. The spacer 44 is sleeved on the pin 45, serving as a buffer and protection. The transmission swing arm 8 is generally block-shaped, and both ends of the transmission swing arm 8 are provided with mounting through holes. One mounting through hole is connected to the connecting rod 43 via a pin 45, and the other mounting through hole is connected to the transmission shaft 3, for accurately transmitting the power of the drive motor 2 to the transmission shaft 3 under the drive of the crank-connecting rod mechanism 4. When the drive motor 2 starts, its output drives the eccentric wheel shaft 41 to rotate, and the eccentric wheel 42 rotates synchronously. The connecting rod 43, driven by the eccentric wheel 42, reciprocates, causing the transmission swing arm 8 to oscillate around its connection point with the transmission shaft 3, thereby rotating the transmission shaft 3. It should be noted that in actual use, the specifications of the eccentric wheel 42 can be changed to accommodate different filling ranges.

[0032] The pushing assembly 5 includes a pushing rod 51, a linear slide rail 52, and a pushing part 53. One end of the pushing rod 51 is connected to the adjusting swing arm 9, and the other end is connected to the pushing part 53, for driving the pushing part 53 to move. The track 521 of the linear slide rail 52 is fixedly mounted on the mounting frame 1, providing a stable track for the linear movement of the pushing part 53 and ensuring that the pushing part 53 does not deviate during movement. The slider 522 of the linear slide rail 52 is slidably mounted on the track 521, and the pushing part 53 is mounted on the slider 522 and connected to the pump assembly 6, for reciprocating linear motion along the track 521 of the linear slide rail 52 under the drive of the pushing rod 51, thereby driving the pump assembly 6 to extract and inject liquid. Specifically, the pushing part 53 includes a first connecting block 531, a second connecting block 532, and a third connecting block 533. The first connecting block 531 is disposed on the slider 522 and fixedly connected to the slider 522 to ensure that the two remain synchronized during movement. The second connecting block 532 and the third connecting block 533 are respectively vertically disposed at both ends of the first connecting block 531 and fixedly connected to the first connecting block 531, and are respectively used to connect the push rod 51 and the pump body assembly 6. That is, the second connecting block 532 is connected to the push rod 51 for transmitting power and motion, and the third connecting block 533 is connected to the pump body assembly 6.

[0033] Each of the pushing components 5 is equipped with an independent adjusting swing arm 9, which can finely adjust the pushing stroke according to actual needs, further improving the accuracy and flexibility of filling. Specifically, the adjusting swing arm 9 includes a body 91, an end cap 92, an adjusting block 93, a lead screw 94, and a nut 95. The body 91 is provided with a connecting through hole 911 and a strip-shaped slot 912; the connecting through hole 911 is located at one end of the body 91 and is used to securely connect with the drive shaft 3 to ensure the accuracy of power transmission. The strip-shaped slot 912 is located at the other end of the body 91, providing space for the movement of the adjusting block 93. The end cap 92 is located at the slot opening end of the strip-shaped slot 912 and is fixedly connected to the end of the body 91, used to limit the adjusting block 93 within the strip-shaped slot 912 and prevent the adjusting block 93 from disengaging from the strip-shaped slot 912. The adjusting block 93 is movably disposed within the strip-shaped slot 912 and connected to the pushing rod 51, thereby driving the pushing rod 51 to move. The lead screw 94 passes through the end cover 92 and is fixedly connected to the adjusting block 93, thereby driving the adjusting block 93 to move linearly along the strip-shaped slot 912, thus changing the pushing stroke of the pushing assembly 5. The nut 95 is threaded onto the lead screw 94 and located outside the end cover 92, thereby fixing the position of the lead screw 94, preventing accidental rotation of the lead screw 94 during equipment operation, and ensuring that the adjusted pushing stroke remains stable.

[0034] When the pump range needs to be adjusted differently, the position of the adjusting block 93 within the strip-shaped slot 912 can be precisely adjusted by rotating the nut 95 and the lead screw 94, thereby achieving fine adjustment of the pushing stroke of the pushing component 5 and meeting the differentiated and precise control under different filling requirements. Preferably, the transmission swing arm 8 and the adjusting swing arm 9 are at a 45-degree angle, ensuring that the adjusting swing arm 9 can approach a horizontal state when the discharge is nearing its end, effectively avoiding material residue or insufficient filling due to angle issues; moreover, it allows for a more compact layout between components, further reducing the space occupied by the equipment.

[0035] The pump assembly 6 includes a pump body fixing plate 61, a ceramic pump body 62, a piston part 63, and an outlet connector 64. The pump body fixing plate 61 is fixedly mounted on the mounting bracket 1, providing stable support for the entire pump assembly 6 and ensuring its stability during operation. The ceramic pump body 62 is fixedly mounted on the pump body fixing plate 61, and the ceramic pump body 62 has a movable cavity 621 inside. The piston part 63 is movably mounted in the movable cavity 621 of the ceramic pump body 62 and is connected to the pushing part 53 of the pushing assembly 5. It is used to perform linear reciprocating motion in the movable cavity 621 under the drive of the pushing part 53 to achieve precise extraction and filling of liquid. The outlet connector 64 is located on one side of the ceramic pump body 62 and communicates with the inlet / outlet assembly 7 to realize the intake and discharge of liquid.

[0036] Furthermore, the piston section 63 includes a first piston rod 631, a second piston rod 632, a floating joint 633, a plunger head 634, and a third piston rod 635, arranged sequentially from the outside to the inside. One end of the first piston rod 631 is connected to the third connecting block 533 of the pushing assembly 5, effectively preventing stress from directly acting on the ceramic pump body 62 when the movement of the pushing rod 51 is converted into linear motion. The other end is connected to the floating joint 633, used to transmit the linear motion of the pushing section 53 to the floating joint 633. The other end of the floating joint 633 is connected to one end of the second piston rod 632, thereby utilizing the buffering and fine-tuning performance of the floating joint 633 to ensure the stability of the first piston rod 631 and the second piston rod 632 during movement. The plunger head 634 is slidably disposed within the movable cavity 621 and fits tightly against the inner wall of the ceramic pump body 62, ensuring no leakage occurs during liquid extraction and filling, thus improving filling accuracy and stability. The other end of the second piston rod 632 is connected to the plunger head 634, and the third piston rod 635 is disposed within the plunger head 634, used to perform linear reciprocating motion within the movable cavity 621 under the drive of the second piston rod 632, thereby realizing liquid extraction and filling.

[0037] It should be noted that the ceramic pump body 62, the first piston rod 631, the second piston rod 632, the plunger head 634, and the third piston rod 635 are all made of ceramic material, which has advantages such as corrosion resistance, wear resistance, and good sealing performance. This effectively avoids the problem of decreased metering accuracy caused by wear and aging of the sealing rings in traditional pump bodies, ensuring high-precision metering performance for long-term filling and greatly improving the service life and filling accuracy of the pump body assembly 6. Furthermore, by setting up multi-segment connected piston rods, not only is manufacturing easier, but stress damage to the ceramic is also less likely to occur during use.

[0038] Furthermore, to improve the sealing performance of the piston portion 63, the piston portion 63 also includes a first sealing ring 636 and a second sealing ring 637. The first sealing ring 636 is disposed between the second piston rod 632 and the plunger head 634 to prevent liquid leakage from the gap between the plunger head 634 and the second piston rod 632 during extraction and filling, ensuring filling accuracy. The second sealing ring 637 is disposed between the third piston rod 635 and the plunger head 634, further enhancing the sealing performance of the piston portion 63 and ensuring long-term stable operation of the equipment and high filling accuracy.

[0039] The inlet / outlet assembly 7 includes a three-way connector 71, a first one-way valve 72, and a second one-way valve 73. The three-way connector 71 is located on one side of the outlet connector 64 of the pump body assembly 6 and is connected to and communicates with the outlet connector 64. The first one-way valve 72 and the second one-way valve 73 are respectively located at the upper and lower ends of the three-way connector 71 to control the direction of material flow, ensuring that the liquid can only flow in a preset direction. Specifically, the three ports of the three-way connector 71 are respectively connected to the outlet connector 64, the first one-way valve 72, and the second one-way valve 73. The first one-way valve 72 is located between the three-way connector 71 and the material inlet pipe to ensure that the material can only flow into the pump body assembly 6 from the inlet pipe without backflow, ensuring the accuracy and stability of the feed. The second one-way valve 73 is located between the three-way connector 71 and the material outlet pipe to ensure that the material can only flow from the pump body assembly 6 to the outlet pipe, ensuring smooth discharge.

[0040] Working principle: When filling is required, the drive motor 2 is started. The output end of the drive motor 2 drives the eccentric wheel shaft 41 to rotate, and the eccentric wheel 42 rotates synchronously. The connecting rod 43 reciprocates under the drive of the eccentric wheel 42, which in turn drives the transmission swing arm 8 to oscillate around its connection point with the transmission shaft 3, causing the transmission shaft 3 to start rotating. When the transmission shaft 3 rotates, it drives the adjusting swing arm 9 to swing, and through the adjusting swing arm 9, it drives the push connecting rod 51 to move. The push connecting rod 51 converts the swing of the adjusting swing arm 9 into linear motion, and drives the push part 53 to reciprocate linearly on the track 521 of the linear slide rail 52, thereby driving the piston part 63 to reciprocate linearly within the movable cavity 621 of the ceramic pump body 62. When extracting liquid, the piston 63 is pulled out, creating a negative pressure in the movable cavity 621. At this time, the first one-way valve 72 opens and the second one-way valve 73 closes, allowing material to enter the ceramic pump body 62 from the feed pipe via the first one-way valve 72. When filling liquid, the piston 63 retracts, increasing the pressure in the movable cavity 621. At this time, the first one-way valve 72 closes and the second one-way valve 73 opens, allowing material to flow from the ceramic pump body 62 to the discharge pipe via the second one-way valve 73, thus completing the liquid filling process.

[0041] When it is necessary to adjust the filling accuracy of each pump body component 6 differently, the nut 95 and the lead screw 94 can be rotated to precisely adjust the position of the adjusting block 93 in the strip slot 912, thereby changing the pushing stroke of the pushing component 5 and achieving precise and flexible control under different filling requirements.

[0042] In this embodiment, the high-precision metering and filling equipment with multiple pumps of this application includes a mounting frame, a drive motor, a transmission shaft, a crank-connecting rod mechanism, a push assembly, a pump body assembly, and an infeed / outfeed assembly. By setting multiple pump body assemblies and utilizing the synergy of the transmission shaft, crank-connecting rod mechanism, and push assembly to achieve a linkage structure where a single motor drives multiple pumps, multiple filling operations can be performed simultaneously, greatly improving filling efficiency. Compared with existing technologies, it significantly reduces the number of drive motors required, thereby greatly reducing the overall space occupied and effectively lowering costs. Simultaneously, by setting an adjusting swing arm, the pushing stroke of each push assembly can be finely adjusted, thereby achieving precise and flexible control under different filling requirements. It also forms a dual adjustment mechanism, supporting both unified and rapid adjustment of the overall filling volume of all pumps and independent precise fine-tuning of individual pumps. This not only significantly improves filling efficiency and metering accuracy but also greatly enhances the equipment's adaptability to different ranges and multi-station personalized filling needs, meeting diverse filling scenarios and significantly improving the overall flexibility and practicality of the equipment. Furthermore, by using ceramic materials for the pump body and piston section, the problem of decreased metering accuracy caused by wear and aging of the sealing rings in traditional pumps is effectively avoided, ensuring high-precision metering performance for long-term filling. Simultaneously, the multi-segment piston rod not only facilitates manufacturing but also minimizes stress damage to the ceramic during use. By setting up N pushing components and using linear guides to ensure the swing of the adjusting arm is converted into linear motion, each pump body receives uniform power, improving motion stability. The use of a three-way connector, a first check valve, and a second check valve allows for precise control of the material's inflow and outflow direction, preventing backflow and ensuring continuous and stable filling, thus improving filling efficiency and significantly reducing material waste. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0043] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., may be used here to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figure. It should be understood that spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device as described in the figure.

[0044] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-precision metering and filling device with multiple pumps linked together, characterized in that, It includes a mounting bracket (1), a drive motor (2), a transmission shaft (3), a crank connecting rod mechanism (4), a push assembly (5), a pump body assembly (6), and a feeding and discharging assembly (7); The drive motor (2) is fixed on the mounting bracket (1) by a motor mounting plate; The drive shaft (3) is fixed on the mounting bracket (1) by a bearing seat and is located on one side of the drive motor (2); One end of the crank-connecting rod mechanism (4) is connected to the output end of the drive motor (2), and the other end is connected to the transmission shaft (3) through the transmission swing arm (8); N of the aforementioned push components (5) are arranged in parallel between the drive shaft (3) and the pump body assembly (6), and one end of the push component (5) is connected to the drive shaft (3) through an adjusting swing arm (9), and the other end is connected to the pump body assembly (6); N pump body assemblies (6) are arranged in parallel on the mounting frame (1) and are connected one-to-one with the push assembly (5); N feeding and discharging components (7) are respectively disposed at one end of the pump body assembly (6) and are connected to the pump body assembly (6).

2. The high-precision metering and filling equipment with multiple pumps linked according to claim 1, characterized in that, The crank-connecting rod mechanism (4) includes an eccentric wheel shaft (41), an eccentric wheel disc (42), a connecting rod (43), and a spacer (44); The eccentric wheel shaft (41) is connected to the output end of the drive motor (2); The eccentric wheel (42) is sleeved on the eccentric wheel shaft (41); One end of the connecting rod (43) is connected to the eccentric wheel (42) via a pin (45), and the other end is connected to the transmission swing arm (8) via a pin (45). The spacer (44) is fitted onto the pin (45).

3. The high-precision metering and filling equipment with multiple pumps linked according to claim 2, characterized in that, The transmission swing arm (8) is in the shape of a block, and both ends of the transmission swing arm (8) are provided with mounting through holes; One of the mounting through holes is connected to the connecting rod (43) via a pin (45), and the other mounting through hole is connected to the transmission shaft (3).

4. The high-precision metering and filling equipment with multiple pumps linked according to claim 1, characterized in that, The pushing assembly (5) includes a pushing link (51), a linear slide rail (52), and a pushing part (53); One end of the push link (51) is connected to the adjusting arm (9), and the other end is connected to the push part (53); The track (521) of the linear slide rail (52) is fixedly mounted on the mounting bracket (1), and the slider (522) of the linear slide rail (52) is slidably mounted on the track (521); The pusher (53) is disposed on the slider (522) and connected to the pump body assembly (6).

5. The high-precision metering and filling equipment with multiple pumps linked according to claim 4, characterized in that, The pushing part (53) includes a first connecting block (531), a second connecting block (532) and a third connecting block (533); The first connecting block (531) is disposed on the slider (522) and is fixedly connected to the slider (522); The second connecting block (532) and the third connecting block (533) are respectively vertically arranged at both ends of the first connecting block (531) and fixedly connected to the first connecting block (531), and are respectively used to connect the push rod (51) and the pump body assembly (6).

6. The high-precision metering and filling equipment with multiple pumps linked according to claim 1, characterized in that, The pump body assembly (6) includes a pump body fixing plate (61), a ceramic pump body (62), a piston part (63), and an outlet connector (64); The pump body fixing plate (61) is fixedly mounted on the mounting bracket (1); The ceramic pump body (62) is fixedly mounted on the pump body fixing plate (61), and the ceramic pump body (62) is provided with a movable cavity (621); The piston (63) is movably disposed in the movable cavity (621) of the ceramic pump body (62) and is connected to the push assembly (5); The outlet connector (64) is located on one side of the ceramic pump body (62) and is connected to the feed / discharge assembly (7).

7. The high-precision metering and filling equipment with multiple pumps linked according to claim 6, characterized in that, The piston section (63) includes a first piston rod (631), a second piston rod (632), a floating joint (633), a plunger head (634), and a third piston rod (635); The first piston rod (631), the floating joint (633), the second piston rod (632), and the third piston rod (635) are arranged sequentially from the outside to the inside; One end of the first piston rod (631) is connected to the push assembly (5), and the other end is connected to one end of the second piston rod (632) through the floating joint (633); The plunger head (634) is slidably disposed within the movable cavity (621); The other end of the second piston rod (632) is connected to the plunger head (634); The third piston rod (635) is disposed inside the plunger head (634).

8. The high-precision metering and filling equipment with multiple pumps linked according to claim 7, characterized in that, The piston portion (63) further includes a first sealing ring (636) and a second sealing ring (637); The first sealing ring (636) is disposed between the second piston rod (632) and the plunger head (634); The second sealing ring (637) is disposed between the third piston rod (635) and the plunger head (634).

9. The high-precision metering and filling equipment with multiple pumps linked according to claim 6, characterized in that, The feeding / discharging assembly (7) includes a three-way connector (71), a first check valve (72), and a second check valve (73); The three-way connector (71) is located on one side of the pump body assembly (6) and is connected and communicates with the outlet connector (64); The first check valve (72) and the second check valve (73) are respectively located at the upper and lower ends of the three-way connector (71) to control the direction of material entry and exit.

10. The high-precision metering and filling equipment with multiple pumps linked according to claim 4, characterized in that, The adjusting arm (9) includes a body (91), an end cap (92), an adjusting block (93), a lead screw (94), and a nut (95); The body (91) is provided with a connecting through hole (911) and a strip-shaped slot (912); the connecting through hole (911) is located at one end of the body (91) for a secure connection with the drive shaft (3); the strip-shaped slot (912) is located at the other end of the body (91); The end cap (92) is disposed at the slot end of the strip-shaped slot (912) and is fixedly connected to the end of the body (91); The adjusting block (93) is movably disposed in the strip-shaped slot (912) and connected to the push rod (51); The lead screw (94) passes through the end cap (92) and is fixedly connected to the adjusting block (93); The nut (95) is threaded onto the lead screw (94) and is located on the outside of the end cap (92).

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