A filling device

Abstract

This utility model relates to the field of filling technology and specifically discloses a filling device. The driving mechanism is set above the driving rod, which can also be understood as the upper part of the driving component being the driving mechanism. It makes full use of the space directly behind the side of the support member away from the pump body assembly, specifically the upper space directly behind. At this time, the driving mechanism and the driving rod can be set vertically, and the driving rod is driven by the driving mechanism to move, avoiding the use of a transmission structure. The driving structure is simpler, more compact, and lower in cost.

Description

Technical Field

[0001] This utility model relates to the field of filling technology, and in particular to a filling device. Background Technology

[0002] In industrial production, filling equipment (such as filling pumps) can accurately, efficiently, and hygienically transport a fixed quantity of liquid material from a large container (such as a storage tank) to the final product packaging container (such as a bottle, barrel, bag, can, etc.). Referring to the quick-release multi-unit pump disclosed in Chinese Patent CN120083684A, the pump body can achieve both a discharge state and a replenishment state by rotating the flow control valve body. In the replenishment state, the flow control valve body rotates, connecting the inlet channel and the piston cylinder through the connecting flow channel. Pulling down the piston rod replenishes liquid from the inlet pipe into the piston cylinder. In the discharge state, the flow control valve body rotates, connecting the outlet pipe and the piston cylinder through the connecting flow channel. The piston rod slides towards the pump body, driving the liquid in the piston cylinder to flow to the outlet pipe and be discharged along the outlet pipe. According to the aforementioned Chinese patent, and in conjunction with its accompanying drawings, the drive mechanism for driving the piston rod to rise and fall includes a drive source, a transmission assembly, a drive screw, and a drive slider. The drive slider is connected to the piston rod through a connecting support. The drive source drives the transmission assembly to move, the transmission assembly drives the drive screw to rotate, and the drive screw causes the drive slider to rise and fall on it. Thus, the drive slider drives the connecting support to rise and fall, thereby realizing the extension and retraction of the piston rod. However, when the drive source is placed at the bottom, in order to avoid interference between the drive source and the drive slider and to avoid occupying more space, the drive source is placed on the side of the drive slider. This means that the drive component and the lead screw cannot be placed on the same straight line. In order to drive the lead screw, a transmission component must be used, which complicates the structure of the piston rod drive mechanism and increases the cost. Utility Model Content

[0003] The present invention aims to solve the above-mentioned technical problems existing in the prior art and provide a filling device with a simple and compact structure and low cost driving components.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] The filling device of this utility model includes a support member, on which a pump assembly and a drive assembly are disposed. The pump assembly and the drive assembly are disposed on different sides of the support member. The pump assembly includes a piston rod and a piston cylinder. One end of the piston rod is inserted into the piston cylinder, and the other end is located outside the piston cylinder. The output end of the drive assembly is connected to the end of the piston rod located outside the piston cylinder. The drive assembly drives the piston rod to extend and retract relative to the piston cylinder. The drive assembly includes a drive mechanism, a drive rod, and a piston rod. The drive mechanism is connected to the support member. The drive rod is located below the drive mechanism. One end of the drive rod facing the drive mechanism is connected to the output shaft of the drive mechanism. The other end of the drive rod is connected to the piston rod. The piston rod is the output end of the drive assembly and is connected to the piston rod. The drive mechanism outputs linear or rotational motion to cause the piston rod to pull down or push up.

[0006] The filling device described in this utility model has the drive mechanism positioned above the drive rod. This can also be understood as the upper part of the drive assembly being the drive mechanism. It makes full use of the space directly behind the support component on the side away from the pump body assembly, specifically the upper space directly behind it. In this case, the drive mechanism and the drive rod can be arranged vertically, with the drive mechanism driving the drive rod to move. This avoids the use of a transmission structure, making the drive structure simpler, more compact, and lower in cost.

[0007] Furthermore, the driving mechanism is a motor that outputs forward and reverse rotation, the driving rod is a lead screw, a slider is sleeved on the lead screw, one end of the piston rod is connected to the slider, and the other end of the piston rod passes through the support member and is connected to the piston rod; the motor outputs rotational motion to drive the lead screw to rotate, thereby driving the slider to rise and fall on the lead screw, the slider drives the piston rod to rise and fall, and the piston rod drives the piston rod to pull down or push up.

[0008] Alternatively, the drive mechanism may be a linear motor, a cylinder, or an electric push rod. The drive mechanism drives the drive rod to rise and fall, thereby driving the piston rod to rise and fall, and the piston rod drives the piston rod to pull down or push up.

[0009] Furthermore, the drive assembly also includes a guide rod, the drive rod being located between the guide rod and the support member, the slider being sleeved on the guide rod and movable up and down along the guide rod; two travel limit blocks are provided at axial intervals on the guide rod, and the slider is located between the two travel limit blocks.

[0010] Furthermore, the slider has a receiving groove on the side facing the support member, and the piston rod includes a connector and a rod. One end of the rod is connected to the connector, and the other end is connected to the piston rod. The connector is connected to the receiving groove.

[0011] Furthermore, the pump body assembly includes a pump body, a flow channel is provided within the pump body, a piston cylinder is connected to the bottom end of the pump body and communicates with the flow channel, an insertion groove is provided on the bottom surface of the pump body, and a pair of symmetrically arranged limiting edges are provided at one end of the pump body where the insertion groove is located. The two limiting edges are distributed around the periphery of the insertion groove. An annular retaining platform is provided on the outer wall of the piston cylinder, and a pair of symmetrically arranged clearance planes are provided on the side wall of the annular retaining platform. The distance between the two clearance planes is less than or equal to the distance between the two limiting edges, and the diameter of the annular retaining platform is greater than the distance between the two limiting edges. When the two clearance planes of the annular retaining platform are aligned with the two limiting edges, the end of the piston cylinder can be inserted into or disengaged from the insertion groove. When the clearance planes of the annular retaining platform are misaligned with the limiting edges, the end of the piston cylinder cannot be inserted into or disengaged from the insertion groove.

[0012] Furthermore, the pump body is also provided with a first guide nozzle and a second guide nozzle, both of which are connected to the flow channel; the pump body assembly also includes a flow control component, which is rotatably disposed in the flow channel, and is used to control the opening and closing of the first guide nozzle and the second guide nozzle with the flow channel respectively.

[0013] Furthermore, the flow control component includes a flow control valve body, and a groove is provided circumferentially on the side wall of the flow control valve body. When the flow control valve body rotates, the groove can connect the first guide nozzle to the piston cylinder, or connect the second guide nozzle to the piston cylinder.

[0014] Furthermore, the flow control valve body extends out of the pump body at both ends. One end of the flow control valve body is connected to a mating block, and the other end is provided with a mating slot. When multiple pump body assemblies are horizontally spaced on the support member, the mating blocks of the flow control valve bodies in adjacent pump body assemblies are inserted into the mating slots so that the flow control valve bodies in all pump body assemblies rotate synchronously.

[0015] Furthermore, the pump assembly also includes a drive member connected to the support member, the drive member being used to drive the flow control member to rotate.

[0016] Furthermore, there are multiple pump body assemblies and multiple drive assemblies, and the multiple pump body assemblies and multiple drive assemblies are connected in a one-to-one correspondence; the multiple pump body assemblies and multiple drive assemblies are respectively arranged laterally at intervals on the support member. Attached Figure Description

[0017] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0018] Figure 1 This is a perspective view of the canning device in an embodiment of this utility model.

[0019] Figure 2 for Figure 1 A sectional view of the side view.

[0020] Figure 3 for Figure 1 A sectional view of the front view.

[0021] Figure 4 and 5 This is an exploded view of the pump body and piston structure in the pump body assembly from different directions.

[0022] Figure 6 This is a schematic diagram of the flow control valve body structure.

[0023] The components include: support member 1; piston rod 2; piston cylinder 3; drive mechanism 4; drive rod 5; first plate 6; second plate 7; third plate 8; coupling 9; slider 10; lead screw nut 11; guide rod 12; stroke limit block 13; receiving groove 14; connector 15; rod 16; elongated through hole 17; connecting ear plate 18; locking pin 19; plug-in rod section 20; abutment rod section 21; pump body 22; plug-in groove 23; limit edge 24; annular clamping platform 25; clearance plane 26; first guide nozzle 27; second guide nozzle 28; first channel 29; second channel 30; flow control valve body 31; groove 32; mating block 33; mating groove 34; and drive member 35. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0025] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] This utility model specifically provides an embodiment of a filling device, see [link to embodiment]. Figure 1 The system includes a support member 1, on which a pump body assembly and a drive assembly are disposed. The pump body assembly and the drive assembly are located on different sides of the support member 1. In this embodiment, the support member 1 is a plate-shaped member with a first side and a second side, which are arranged opposite to each other. The pump body assembly is disposed on the first side, and the drive assembly is disposed on the second side. The pump body assembly includes a piston rod 2 and a piston cylinder 3. One end of the piston rod 2 is inserted into the piston cylinder 3, and the other end is located outside the piston cylinder 3. The output end of the drive assembly is connected to the end of the piston rod 2 located outside the piston cylinder 3. See [link to relevant documentation]. Figure 1 In the diagram, the end of piston rod 2 located outside piston cylinder 3 can be understood as the bottom end. The piston rod 2 extends and retracts relative to piston cylinder 3 via a drive assembly. The drive assembly includes a drive mechanism 4, a drive rod 5, and a piston rod. The drive mechanism 4 is connected to the support member 1. The drive rod 5 is located below the drive mechanism 4. One end of the drive rod 5 facing the drive mechanism 4 is connected to the output shaft of the drive mechanism 4, and the other end of the drive rod 5 is connected to the piston rod. The piston rod is the output end of the drive assembly and is connected to piston rod 2. The drive mechanism 4 outputs linear or rotational motion to cause the piston rod to pull down or push up piston rod 2. Specifically, in this embodiment, the drive mechanism 4 outputs rotational motion. See [link to relevant documentation]. Figure 1 On the second side of the support member 1, a first plate 6, a second plate 7, and a third plate 8 are arranged from top to bottom at intervals. The drive mechanism 4 is connected to the first plate 6. The output shaft of the drive mechanism 4 passes through the first plate 6 and extends into the space between the first plate 6 and the second plate 7. One end of the drive rod 5 passes upward through the second plate 7 and is connected to the output shaft of the drive mechanism 4. The two can be connected by a coupling 9. The drive rod 5 and the second plate 7 are connected by a bearing. The other end of the drive rod 5 is connected to the third plate 8 by a bearing. By setting the first plate 6, the second plate 7, and the third plate 8, the support strength of the drive rod 5 can be improved. At the same time, by setting the drive mechanism 4 on a separate plate, the three plates can respectively bear the torques received by the drive mechanism 4, the slider 10, and the drive rod 5 during rotation, which can improve the bending resistance of each plate, extend the service life of the drive assembly, and ensure the movement accuracy of the piston rod 2 and the accuracy of the pump body assembly.

[0028] In this embodiment, the drive mechanism 4 is positioned above the drive rod 5. It can also be understood that the upper part of the drive assembly is the drive mechanism 4. The space directly behind the support member 1 on the side away from the pump body assembly is fully utilized, specifically the upper space directly behind. At this time, the drive mechanism 4 and the drive rod 5 can be arranged vertically. The drive mechanism 4 drives the drive rod 5 to move, avoiding the use of a transmission structure. The drive structure is simpler, more compact, and lower in cost.

[0029] In a preferred embodiment, this utility model provides two implementation methods for the driving component, see [link to relevant documentation]. Figure 1 The drive mechanism 4 in the drive assembly outputs rotary motion. Drive mechanism 4 is a motor that outputs forward and reverse rotation. The drive rod 5 is a lead screw, on which a slider 10 is mounted. One end of the piston rod is connected to the slider 10, and the other end passes through the support member 1 and connects to the piston rod 2. The motor outputs rotary motion to drive the lead screw to rotate, thereby causing the slider 10 to rise and fall on the lead screw. The slider 10 then drives the piston rod to rise and fall, and the piston rod drives the piston rod 2 to pull down or push up. This structure ensures the smooth extension and retraction of the piston rod 2, guaranteeing the operational accuracy of the pump assembly. (See also...) Figure 2 A through hole is provided in the slider 10, and a lead screw nut 11 is provided in the through hole for cooperating with the lead screw to convert the rotational motion of the motor into the linear motion of the slider 10. In another embodiment, the linear motion output by the drive mechanism 4 can be a linear motor, a cylinder, or an electric push rod, etc. The drive mechanism 4 drives the drive rod 5 to rise and fall, thereby driving the piston rod to rise and fall, and thus the piston rod drives the piston rod 2 to pull down or push up.

[0030] In the preferred embodiment, see Figure 1 and Figure 2The drive assembly also includes a guide rod 12, with the drive rod 5 located between the guide rod 12 and the support member 1. The slider 10 is sleeved on the guide rod 12 and can move up and down along the guide rod 12. Two travel limit blocks 13 are axially spaced on the guide rod 12, and the slider 10 is located between the two travel limit blocks 13. Specifically, both ends of the guide rod 12 pass through the second plate member 7, with one end connected to the first plate member 6 and the other end connected to the third plate member 8. One guide rod 12 can be provided, or multiple guide rods can be provided. In this embodiment, two guide rods 12 are provided, spaced apart, and both are outside the drive rod 5. By providing the guide rods 12, the movement of the slider 10 driving the piston rod 2 is made more stable. By providing the travel limit blocks 13, the travel of the slider 10 in raising and lowering can be limited. Furthermore, in the prior art, referring to the quick-release multi-unit pump disclosed in Chinese Patent CN120083684A, the guide rod is located inside the lead screw, that is, the lead screw is outside the guide rod. This leads to an increase in transmission torque, which not only easily increases energy consumption, but also causes the plates used to support the drive mechanism and the lead screw to bend and deform, affecting service life. At the same time, it also leads to a decrease in transmission accuracy, thereby affecting the accuracy of the pump. In this embodiment, the lead screw is located inside the guide rod 12 and close to the fulcrum. With the rigidity of the second plate 7 and the third plate 8, the transmission torque can be reduced, the force is better, and the slippage of the lead screw during movement is effectively avoided, further ensuring the accuracy of the pump.

[0031] In this embodiment, see Figure 2 The slider 10 has a receiving groove 14 on the side facing the support member 1. The piston rod includes a connector 15 and a rod 16. One end of the rod 16 is connected to the connector 15, and the other end is connected to the piston rod 2. The connector 15 is connected to the receiving groove 14. An elongated through hole 17 is provided on the support member 1 along its height direction. The rod 16 passes through the elongated through hole 17 and connects to the piston rod 2, providing space for the rod 16 to move up and down. The piston rod contacts the slider 10 through the connector 15, increasing the connection area between them and ensuring a smoother and more reliable process for the piston rod to rise and fall with the slider 10. In this embodiment, see... Figure 1One end of the rod 16, which protrudes from the elongated through hole 17, is integrally formed with a connecting ear plate 18. Two connecting ear plates 18 are spaced apart. One end of the piston rod 2 is engaged between the two connecting ear plates 18. The rod 16 is also provided with a locking pin 19, which protrudes from the connecting ear plate 18 and the end of the piston rod 2. The locking pin 19 enables a detachable connection between the rod 16 and one end of the piston rod 2. To further improve the stability of the connection between the rod 16 and the piston rod 2, an anti-disengagement component is provided at the end of the locking pin 19. The anti-disengagement component includes an interlocking rod section 20 and an abutting rod section 21 that are connected to each other. The interlocking rod section 20 and the abutting rod section 21 are integrally formed and made of elastic material. The interlocking rod section 20 passes through the locking pin 19, and the abutting rod section 21 abuts against the outer wall of the locking pin 19.

[0032] In the preferred embodiment, see Figure 1-5 The pump assembly includes a pump body 22, within which a flow channel is provided. A piston cylinder 3 is connected to the bottom end of the pump body 22, and the piston cylinder 3 communicates with the flow channel. An insertion groove 23 is provided on the bottom surface of the pump body 22. A pair of symmetrically arranged limiting edges 24 are provided at one end of the pump body 22 where the insertion groove 23 is located. The two limiting edges 24 are distributed around the periphery of the insertion groove 23. In this embodiment, the limiting edges 24 are integrally formed on the end wall of the pump body 22. An annular retaining platform 25 is provided on the outer wall of the piston cylinder 3. The annular mounting platform 25 is provided with a pair of symmetrically arranged clearance planes 26. The distance between the two clearance planes 26 is less than or equal to the distance between the two limiting edges 24. The diameter of the annular mounting platform 25 is greater than the distance between the two limiting edges 24. When the two clearance planes 26 of the annular mounting platform 25 are aligned with the two limiting edges 24, the end of the piston cylinder 3 can be inserted into or disengaged from the insertion groove 23. When the clearance planes 26 of the annular mounting platform 25 are misaligned with the limiting edges 24, the end of the piston cylinder 3 cannot be inserted into or disengaged from the insertion groove 23. In this embodiment, when the end of the piston cylinder 3 needs to be inserted into or removed from the insertion slot 23, the clearance plane 26 of the annular retaining platform 25 on the piston cylinder 3 is rotated to the same side as the limiting edge 24. The two limiting edges 24 correspond one-to-one with the two clearance planes 26. Since the distance between the two clearance planes 26 is less than or equal to the distance between the two limiting edges 24, the piston cylinder 3 can be allowed to be inserted into or removed from the insertion slot 23. When the piston cylinder 3 needs to be connected to the pump body 22, the piston cylinder... After the end of piston cylinder 3 is inserted into the insertion groove 23 of pump body 22, piston cylinder 3 is rotated to make the clearance plane 26 of annular locking platform 25 misalign with the limiting edge 24. Since the diameter of annular locking platform 25 is greater than the distance between the two limiting edges 24, the part of annular locking platform 25 without clearance plane 26 can be rotated to the limiting edge 24. Through the limiting edge 24 and the wall of insertion groove 23, piston cylinder 3 is stably connected to pump body 22. Through the above structure, the purpose of quick disassembly and assembly can be achieved, which is convenient for maintenance and cleaning.

[0033] In the preferred embodiment, see Figure 1-5 The pump body 22 is also provided with a first guide nozzle 27 and a second guide nozzle 28, both of which are connected to the flow channel. The pump body assembly also includes a flow control element, which is rotatably disposed in the flow channel. The flow control element is used to control the opening and closing of the first guide nozzle 27 and the second guide nozzle 28 with the flow channel, respectively. In this embodiment, the flow channel includes a first channel 29 and a second channel 30. The first channel 29 and the second channel 30 are connected and perpendicular to each other, which facilitates the arrangement of the flow control element at the connection point between the two channels. It is convenient to rotate the flow control element to control the opening and closing of the first channel 29 and the second channel 30. The first guide nozzle 27 is connected to the first channel 29, and the second guide nozzle 28 is connected to the second channel 30. The flow control element is located at the connection point between the first channel 29 and the second channel 30. According to actual needs, the first guide nozzle 27 can be either a discharge nozzle or a feed nozzle, and the second guide nozzle 28 can be either a discharge nozzle or a feed nozzle. That is, when the first guide nozzle 27 is a feed nozzle, the second guide nozzle 28 is a discharge nozzle, and when the first guide nozzle 27 is a discharge nozzle, the second guide nozzle 28 is a feed nozzle. When used as a feed nozzle, it is connected to the storage container through a pipeline to guide the material in the storage container into the pump body 22. When used as a discharge nozzle, it is used as a filling nozzle to fill a certain amount of material into the packaging container.

[0034] In the preferred embodiment, see Figure 2-6The flow control device includes a flow control valve body 31. A groove 32 is provided on the side wall of the flow control valve body 31 along the circumferential direction. When the flow control valve body 31 rotates, the groove 32 can connect the first guide nozzle 27 with the piston cylinder 3, or connect the second guide nozzle 28 with the piston cylinder 3. In this embodiment, the flow control valve body 31 is cylindrical, and its diameter is larger than the diameter of the first channel 29 in the flow channel, and also larger than the diameter of the second channel 30. Since the groove 32 is set on the side wall of the flow control valve body 31, that is, a part of the side wall of the flow control valve body 31 is removed to form the groove 32, when the flow control valve body 31 is rotated, when the groove 32 on the flow control valve body 31 is opposite to the first channel 29, the first channel 29 is opened. At this time, the side wall of the flow control valve body 31 blocks the second channel 30. At this time, the first guide nozzle 27 is connected to the piston cylinder 3 through the first channel 29. When the groove 32 on the flow control valve body 31 is opposite to the second channel 30, the second channel 30 is opened. At this time, the side wall of the flow control valve body 31 blocks the first channel 29. At this time, the second guide nozzle 27 is connected to the piston cylinder 3 through the first channel 29. 8. The piston cylinder 3 is connected through the second channel 30. For example, when the first guide nozzle 27 is the feed nozzle and the second guide nozzle 28 is the discharge nozzle, when it is necessary to pump material into the piston cylinder 3, the flow control valve body 31 rotates so that the trough 32 is opposite to the first channel 29. At this time, the second channel 30 is blocked by the flow control valve body 31. The drive assembly drives the piston rod 2 to pull down, guiding the material from the first guide nozzle 27 into the first channel 29 and into the piston cylinder 3. Subsequently, when it is necessary to pump the material out of the piston cylinder 3, the flow control valve body 31 rotates so that the trough 32 is opposite to the second channel 30. At this time, the first channel 29 is blocked by the flow control valve body 31. The drive assembly drives the piston rod 2 to push up, pumping the material from the piston cylinder 3 into the second channel 30 and out from the second guide nozzle 28, pumping the material into the packaging container.

[0035] In the preferred embodiment, see Figure 1-5 The flow control valve body 31 extends through the pump body 22 at both ends. One end of the flow control valve body 31 is connected to a mating block 33, and the other end has a mating groove 34. When multiple pump body assemblies are horizontally spaced on the support member 1, the mating blocks 33 of the flow control valve bodies 31 in adjacent pump body assemblies are inserted into the mating grooves 34, so that the flow control valve bodies 31 in all pump body assemblies rotate synchronously. With the above structure, multiple packaging containers can be filled simultaneously, forming batch production and improving work efficiency.

[0036] In the preferred embodiment, see Figure 1 , 3-5. The pump assembly also includes a drive unit 35 connected to the support member 1. The drive unit 35 is used to drive the flow control member to rotate. Specifically, the drive unit 35 can be a servo motor. The output shaft of the drive unit 35 is connected to the mating block 33 on the flow control valve body 31 in the adjacent pump assembly. The rotational motion output by the drive unit 35 can drive the flow control valve body 31 to rotate. When there are multiple pump assemblies, the mating block 33 and the mating slot 34 can cooperate to achieve synchronous rotation of all flow control valve bodies 31.

[0037] In the preferred embodiment, see Figure 1 The device comprises multiple pump body assemblies and multiple drive assemblies, with each assembly connected in a one-to-one correspondence. These assemblies and drive assemblies are horizontally spaced on support member 1. This allows for simultaneous filling of multiple packaging containers, resulting in higher filling efficiency. The filling material in this embodiment can be either a liquid or a paste. The piston rod 4 can be made of stainless steel or ceramic. Stainless steel piston rods are less expensive, while ceramic piston rods offer higher cleanliness and stronger corrosion resistance.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A filling device, comprising a support member, wherein a pump assembly and a drive assembly are disposed on the support member, the pump assembly and the drive assembly being disposed on different sides of the support member, the pump assembly comprising a piston rod and a piston cylinder, one end of the piston rod being inserted into the piston cylinder and the other end being located outside the piston cylinder, the output end of the drive assembly being connected to the end of the piston rod located outside the piston cylinder, the drive assembly driving the piston rod to extend and retract relative to the piston cylinder; the drive assembly comprising a drive mechanism, a drive rod, and a piston pull rod, the drive mechanism being connected to the support member, characterized in that: The drive rod is located below the drive mechanism. One end of the drive rod facing the drive mechanism is connected to the output shaft of the drive mechanism, and the other end of the drive rod is connected to the piston rod. The piston rod is the output end of the drive assembly and is connected to the piston rod. The drive mechanism outputs linear or rotational motion to cause the piston rod to pull down or push up the piston rod.

2. The filling device according to claim 1, characterized in that: The driving mechanism is a motor that outputs forward and reverse rotation. The driving rod is a lead screw, and a slider is sleeved on the lead screw. One end of the piston rod is connected to the slider, and the other end of the piston rod passes through the support member and is connected to the piston rod. The motor outputs rotational motion to drive the lead screw to rotate, thereby driving the slider to rise and fall on the lead screw. The slider drives the piston rod to rise and fall, and the piston rod drives the piston rod to pull down or push up. Alternatively, the drive mechanism may be a linear motor, a cylinder, or an electric push rod. The drive mechanism drives the drive rod to rise and fall, thereby driving the piston rod to rise and fall, and the piston rod drives the piston rod to pull down or push up.

3. The filling device according to claim 2, characterized in that: The drive assembly further includes a guide rod, which is located between the guide rod and the support member. The slider is sleeved on the guide rod and can move up and down along the guide rod. Two travel limit blocks are provided at axial intervals on the guide rod, and the slider is located between the two travel limit blocks.

4. The filling apparatus according to claim 2 or 3, characterized in that: The slider has a receiving groove on the side facing the support member. The piston rod includes a connector and a rod. One end of the rod is connected to the connector, and the other end is connected to the piston rod. The connector is connected to the receiving groove.

5. The filling apparatus according to any one of claims 1-3, characterized in that: The pump assembly includes a pump body with a flow channel inside. A piston cylinder is connected to the bottom end of the pump body and communicates with the flow channel. An insertion groove is provided on the bottom surface of the pump body. A pair of symmetrically arranged limiting edges are provided at one end of the pump body with the insertion groove. The two limiting edges are distributed around the periphery of the insertion groove. An annular retaining platform is provided on the outer wall of the piston cylinder. A pair of symmetrically arranged clearance planes are provided on the side wall of the annular retaining platform. The distance between the two clearance planes is less than or equal to the distance between the two limiting edges. The diameter of the annular retaining platform is greater than the distance between the two limiting edges. When the two clearance planes of the annular retaining platform are aligned with the two limiting edges, the end of the piston cylinder can be inserted into or disengaged from the insertion groove. When the clearance planes of the annular retaining platform are misaligned with the limiting edges, the end of the piston cylinder cannot be inserted into or disengaged from the insertion groove.

6. The filling apparatus according to claim 5, characterized in that: The pump body is also provided with a first guide nozzle and a second guide nozzle, both of which are connected to the flow channel; the pump body assembly also includes a flow control component, which is rotatably disposed in the flow channel and is used to control the opening and closing of the first guide nozzle and the second guide nozzle with the flow channel respectively.

7. The filling apparatus according to claim 6, characterized in that: The flow control device includes a flow control valve body, and a groove is provided circumferentially on the side wall of the flow control valve body. When the flow control valve body rotates, the groove can connect the first guide nozzle to the piston cylinder, or connect the second guide nozzle to the piston cylinder.

8. The filling apparatus according to claim 7, characterized in that: The flow control valve body extends out of the pump body at both ends. One end of the flow control valve body is connected to a mating block, and the other end is provided with a mating slot. When multiple pump body components are horizontally spaced on the support member, the mating blocks of the flow control valve bodies in adjacent pump body components are inserted into the mating slots so that the flow control valve bodies in all pump body components rotate synchronously.

9. The filling apparatus according to claim 6, characterized in that: The pump assembly also includes a drive unit connected to the support member, the drive unit being used to drive the flow control member to rotate.

10. The filling apparatus according to claim 1, characterized in that: There are multiple pump body assemblies and multiple drive assemblies, and the multiple pump body assemblies and multiple drive assemblies are connected in a one-to-one correspondence; the multiple pump body assemblies and multiple drive assemblies are respectively arranged laterally at intervals on the support member.

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