Accurate metering device for paste medicament filling
Through the linkage of plunger metering structure and gas control, the measurement error and material crushing problems of paste-like chemical filling equipment when filling block or large-particle materials are solved, precise measurement and material integrity are achieved, and product quality is improved.
Patent Information
- Application Number
- CN202422435861.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-10
AI Technical Summary
When filling block or large granular materials, the existing paste-like chemical filling equipment has large measurement accuracy errors and the materials are easily extruded and broken, affecting the quality of the finished product.
The plunger metering structure is adopted to achieve accurate metering through the linkage of the plunger and the piston, avoid extrusion and crushing of materials, and combine gas control to achieve linkage operation of the filling valve.
It improves the metering accuracy and material integrity of paste-like chemical filling, reduces metering errors, and ensures product quality.
Smart Images
Figure CN223132425U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of filling and metering devices, and more specifically, relates to an accurate metering device for filling paste-like medicaments. Background Art
[0002] Paste-like medicaments are a common pharmaceutical dosage form, which have the characteristics of high viscosity, easy to apply, and obvious local effects. They are generally used in the fields of skin disease treatment, wound repair, joint pain relief, etc. Paste-like medicaments are accurately filled by filling equipment, and the most commonly used filling equipment is a piston-type filling machine.
[0003] A piston-type filling machine generally includes a frame, a hopper, a piston pump, a switching rotary valve, a filling head, etc. Among them, the traditional metering device mainly has the following problems: The switching rotary valve is used to control the opening and closing between the hopper, the storage pipe, and the filling pipe, and cooperates with the piston pump to form the metering device of the filling equipment. However, when filling bulk or large granular materials, the switching rotary valve is prone to squeezing and cutting the bulk or large granular materials during the opening and closing process, which not only causes a large error in metering accuracy but also affects the integrity of the bulk or large granular materials. Summary of the Utility Model
[0004] The main technical problem to be solved by the utility model is to provide an accurate metering device for filling paste-like medicaments, which adopts a plunger-type metering structure, ensures the metering accuracy of the utility model, and reduces the breakage of materials.
[0005] To solve the above technical problems, the utility model provides the following technical solutions:
[0006] An accurate metering device for filling paste-like medicaments includes a filling platform, on which a storage tank and a filling pipe are fixed. An ejector is fixedly installed at the discharge port of the storage tank, and a filling valve is fixedly installed on the filling pipe. A filling metering assembly is jointly arranged between the filling valve and the ejector;
[0007] A communication cavity is arranged inside the ejector, and the communication cavity is connected to the inside of the storage tank through the discharge port. A discharge pipe is fixedly installed at the bottom of the communication cavity, and a storage pipe is fixedly installed on the side wall of the discharge pipe. The storage pipe is connected to the inside of the communication cavity through the discharge pipe;
[0008] The filling metering assembly includes a plunger slidably installed vertically in the communication cavity and the discharge pipe. The upper end of the plunger is fixedly connected to a discharge cylinder. An outlet channel for connecting the storage pipe and the communication cavity is arranged inside the plunger. A piston is slidably installed in the storage pipe, and the piston is fixedly connected to a metering cylinder through a piston rod.
[0009] The following is a further optimization of the above technical solution by the utility model:
[0010] The lower end opening of the discharge pipe is connected to the feed end of the filling valve through a filling hose.
[0011] Further optimization: A first air pipe joint and a second air pipe joint are respectively installed at both ends of the discharge air cylinder, a third air pipe joint and a fourth air pipe joint are respectively installed at both ends of the metering air cylinder, and a fifth air pipe joint and a sixth air pipe joint are installed on the filling valve. The first air pipe joint, the third air pipe joint and the fifth air pipe joint are jointly connected to a first air pump, and the second air pipe joint, the fourth air pipe joint and the sixth air pipe joint are jointly connected to a second air pump.
[0012] Further optimization: A storage cavity and a first sliding cavity are provided in the storage pipe. The piston is slidably installed along the axial direction in the storage cavity, and one end of the piston rod away from the piston extends into the first sliding cavity. The telescopic rod of the metering air cylinder extends into the first sliding cavity, and one end of the piston rod extending into the first sliding cavity is fixedly connected to the telescopic rod of the metering air cylinder.
[0013] Further optimization: A second sliding cavity is provided above the communication cavity. The upper end of the plunger extends into the second sliding cavity, and the telescopic rod of the discharge air cylinder extends into the second sliding cavity. One end of the plunger extending into the second sliding cavity is fixedly connected to the telescopic rod of the discharge air cylinder.
[0014] The utility model adopts the above technical solutions and has the following beneficial effects: The utility model adopts a plunger type metering structure, which is ingeniously conceived and reasonable in structure. The plunger and the piston cooperate to perform a linkage action to achieve accurate metering of the filling volume. Moreover, the plunger will not cause extrusion and crushing of blocky and large granular materials, solving the problem that the storage cavity is not filled due to the obstruction of the materials, thereby minimizing the metering error of the metering air cylinder and ensuring the metering accuracy of the utility model.
[0015] When filling blocky and large granular materials, compared with the switch rotary valve used in traditional filling machines, the opening and closing action of the plunger will not cause extrusion and crushing of blocky and large granular materials, thus ensuring the integrity of blocky and large granular materials and improving the finished product quality of the product.
[0016] The opening and closing of the filling valve and the actions of the discharge air cylinder and the metering air cylinder are realized by controlling the direction of the gas, which not only avoids the waste of materials entering the filling pipe during the metering process, but also avoids the situation that the metering accuracy is affected due to the materials entering the discharge pipe during the filling process.
[0017] The following further illustrates the utility model with reference to the drawings and embodiments. Description of the Drawings
[0018] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the utility model;
[0019] Figure 2 For Figure 1 The enlarged view of the structure at position A in
[0020] Figure 3 This is the schematic structural view of the filling and metering assembly in the embodiment of the present utility model.
[0021] In the figure: 1, filling platform; 2, storage tank; 21, discharge port; 3, filling pipe; 4, discharger; 41, communication cavity; 42, discharge pipe; 43, storage pipe; 431, storage cavity; 432, first sliding cavity; 44, filling hose; 45, second sliding cavity; 5, filling valve; 51, fifth air pipe joint; 52, sixth air pipe joint; 6, filling and metering assembly; 61, plunger; 62, discharge cylinder; 621, first air pipe joint; 622, second air pipe joint; 63, discharge channel; 64, piston; 65, piston rod; 66, metering cylinder; 661, third air pipe joint; 662, fourth air pipe joint; 7, first air pump; 8, second air pump. Specific implementation mode
[0022] As Figures 1-3 As commonly shown, a precise metering device for paste medicine filling includes a filling platform 1, a storage tank 2 and a filling pipe 3 are fixed on the filling platform 1, a discharger 4 is fixedly installed at the discharge port 21 of the storage tank 2, a filling valve 5 is fixedly installed on the filling pipe 3, and a filling and metering assembly 6 is jointly arranged between the filling valve 5 and the discharger 4.
[0023] In this embodiment, the filling valve 5 adopts an angle valve, and its internal structure and connection relationship form the prior art, which is well known to those of ordinary skill in the art and will not be elaborated here.
[0024] As Figure 2 And Figure 3 As commonly shown, a communication cavity 41 is arranged inside the discharger 4, the communication cavity 41 is communicated with the inside of the storage tank 2 through the discharge port 21, a discharge pipe 42 is fixedly installed at the bottom of the communication cavity 41, a storage pipe 43 is fixedly installed on the side wall of the discharge pipe 42, and the storage pipe 43 is communicated with the inside of the communication cavity 41 through the discharge pipe 42.
[0025] In this embodiment, the arrangement of the discharger 4 facilitates the arrangement of the plunger 61 and the discharge cylinder 62.
[0026] If the plunger 61 is completely placed in the storage tank 2, the length of the plunger 61 needs to be greatly increased, increasing the cost.
[0027] As Figures 1-3 As shown together, the filling and metering assembly 6 includes a plunger 61 slidably installed vertically in the communication cavity 41 and the discharge pipe 42. The upper end of the plunger 61 is fixedly connected to a discharge air cylinder 62. An outlet passage 63 for communicating the storage pipe 43 with the communication cavity 41 is provided in the plunger 61. A piston 64 is slidably installed in the storage pipe 43, and the piston 64 is fixedly connected to a metering air cylinder 66 through a piston rod 65.
[0028] In this embodiment, the cylinder block of the discharge air cylinder 62 is fixedly installed on the storage tank 2, and the cylinder block of the metering air cylinder 66 is fixed to the filling platform 1.
[0029] In this embodiment, when filling bulk or large granular materials, compared with the on-off rotary valve used in traditional filling machines, the opening and closing action of the plunger 61 will not cause extrusion and crushing of bulk or large granular materials, thus ensuring the integrity of bulk or large granular materials and improving the finished product quality of the product.
[0030] Moreover, it also solves the problem that the storage cavity 431 is not filled due to the obstruction of the material, minimizes the metering error of the metering air cylinder 66, and ensures the metering accuracy of the present invention.
[0031] The lower end opening of the discharge pipe 42 is connected to the feed end of the filling valve 5 through a filling hose 44.
[0032] In this embodiment, both ends of the filling hose 44 are detachably installed on the discharge pipe 42 and the filling valve 5 through buckles.
[0033] Such a setting method not only facilitates the repair and replacement of the filling hose 44, but also facilitates the cleaning of the filling hose 44.
[0034] As Figure 1 shown, a first air pipe joint 621 and a second air pipe joint 622 are respectively installed at both ends of the discharge air cylinder 62, a third air pipe joint 661 and a fourth air pipe joint 662 are respectively installed at both ends of the metering air cylinder 66, a fifth air pipe joint 51 and a sixth air pipe joint 52 are installed on the filling valve 5, and the first air pipe joint 621, the third air pipe joint 661 and the fifth air pipe joint 51 are jointly connected to a first air pump 7, and the second air pipe joint 622, the fourth air pipe joint 662 and the sixth air pipe joint 52 are jointly connected to a second air pump 8.
[0035] As Figure 1 shown in, the connection relationship between the first air pump 7, the first air pipe joint 621, the third air pipe joint 661 and the fifth air pipe joint 51 and the first air pump 7 is represented by a dotted line.
[0036] The connection relationship between the second air pump 8, the second air pipe joint 622, the fourth air pipe joint 662 and the sixth air pipe joint 52 and the second air pump 8 is represented by a dash-dotted line.
[0037] In this embodiment, the actions of the discharging air cylinder 62, the metering air cylinder 66 and the filling valve 5 are linked according to the inlet and outlet directions of the gas, which not only avoids the waste caused by the material entering the filling pipe 3 during the metering process, but also avoids the situation that the metering accuracy is affected due to the material entering the discharging pipe 42 during the filling process.
[0038] In this embodiment, the connection methods and principles of the first air pump 7 with the first air pipe joint 621, the third air pipe joint 661 and the fifth air pipe joint 51, and the connection methods and principles of the second air pump 8 with the second air pipe joint 622, the fourth air pipe joint 662 and the sixth air pipe joint 52 are all prior arts and will not be elaborated here.
[0039] As Figure 2 shown, a material storage cavity 431 and a first sliding cavity 432 are provided in the material storage pipe 43. The piston 64 is axially slidably installed in the material storage cavity 431. One end of the piston rod 65 away from the piston 64 extends into the first sliding cavity 432. The telescopic rod of the metering air cylinder 66 extends into the first sliding cavity 432. One end of the piston rod 65 extending into the first sliding cavity 432 is fixedly connected to the telescopic rod of the metering air cylinder 66.
[0040] Above the communication cavity 41, a second sliding cavity 45 is provided. The upper end of the plunger 61 extends into the second sliding cavity 45. The telescopic rod of the discharging air cylinder 62 extends into the second sliding cavity 45. One end of the plunger 61 extending into the second sliding cavity 45 is fixedly connected to the telescopic rod of the discharging air cylinder 62.
[0041] The method for metering and filling using the present utility model is as follows:
[0042] In the first step, the material in the storage tank 2 flows into the communication cavity 41 through the discharge port 21.
[0043] In the second step, first make the first air pump 7 discharge air and the second air pump 8 intake air. Therefore, the first air pipe joint 621, the third air pipe joint 661 and the fifth air pipe joint 51 intake air, and the second air pipe joint 622, the fourth air pipe joint 662 and the sixth air pipe joint 52 discharge air.
[0044] In the third step, control the filling valve 5 to close. The telescopic rod of the discharging air cylinder 62 extends downward to connect the discharge channel 63 with the material storage cavity 431. The telescopic rod of the metering air cylinder 66 retracts inward and drives the piston 64 to slide inward. At this time, suction is generated inside the material storage cavity 431, and a predetermined amount of material is sucked into the material storage cavity 431 for temporary storage, realizing the accurate metering of the material.
[0045] In the fourth step, make the second air pump 8 discharge air and the first air pump 7 intake air. Therefore, the second air pipe joint 622, the fourth air pipe joint 662 and the sixth air pipe joint 52 intake air, and the first air pipe joint 621, the third air pipe joint 661 and the fifth air pipe joint 51 discharge air.
[0046] In the fifth step, control the telescopic rod of the discharging cylinder 62 to retract upward and make the discharging channel 63 misaligned with the inlet of the material storage cavity 431. Open the filling valve 5, and the telescopic rod of the metering cylinder 66 extends outward and drives the piston 64 to slide outward.
[0047] In the sixth step, the piston 64 pushes the material in the material storage cavity 431, successively passes through the discharging pipe 42, the filling hose 44, the filling valve 5 and the filling pipe 3, and finally falls into the lower packaging container (not shown in the figure) through the outlet end of the filling pipe 3 to complete the filling work.
[0048] Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An accurate metering device for paste-like medicine filling, comprising a filling platform (1), on which a storage tank (2) and a filling pipe (3) are fixed, characterized in that, A discharge device (4) is fixedly installed at the discharge port (21) of the storage tank (2), a filling valve (5) is fixedly installed on the filling pipe (3), and a filling metering assembly (6) is jointly arranged between the filling valve (5) and the discharge device (4); A communication cavity (41) is arranged inside the discharge device (4), the communication cavity (41) is communicated with the inside of the storage tank (2) through the discharge port (21), a discharge pipe (42) is fixedly installed at the bottom of the communication cavity (41), and a storage pipe (43) is fixedly installed on the side wall of the discharge pipe (42), and the storage pipe (43) is communicated with the inside of the communication cavity (41) through the discharge pipe (42); The filling metering assembly (6) includes a plunger (61) slidably installed vertically in the communication cavity (41) and the discharge pipe (42), the upper end of the plunger (61) is fixedly connected with a discharge air cylinder (62), a discharge channel (63) for communicating the storage pipe (43) with the communication cavity (41) is arranged inside the plunger (61), a piston (64) is slidably installed in the storage pipe (43), and the piston (64) is fixedly connected with a metering air cylinder (66) through a piston rod (65).
2. The precise metering device for paste medicine filling according to claim 1, wherein The lower end opening of the discharge pipe (42) is communicated with the feed end of the filling valve (5) through a filling hose (44).
3. The precise metering device for paste medicine filling according to claim 2, characterized in that, The two ends of the discharge air cylinder (62) are respectively installed with a first air pipe joint (621) and a second air pipe joint (622), the two ends of the metering air cylinder (66) are respectively installed with a third air pipe joint (661) and a fourth air pipe joint (662), and a fifth air pipe joint (51) and a sixth air pipe joint (52) are installed on the filling valve (5). The first air pipe joint (621), the third air pipe joint (661) and the fifth air pipe joint (51) are jointly connected with a first air pump (7), and the second air pipe joint (622), the fourth air pipe joint (662) and the sixth air pipe joint (52) are jointly connected with a second air pump (8).
4. The precise metering device for paste-like medicine filling according to claim 3, characterized in that, A storage cavity (431) and a first sliding cavity (432) are arranged inside the storage pipe (43), the piston (64) is slidably installed axially in the storage cavity (431), one end of the piston rod (65) away from the piston (64) extends into the first sliding cavity (432), the telescopic rod of the metering air cylinder (66) extends into the first sliding cavity (432), and one end of the piston rod (65) extending into the first sliding cavity (432) is fixedly connected with the telescopic rod of the metering air cylinder (66).
5. The precise metering device for paste pharmaceutical filling according to claim 4, characterized in that, A second sliding cavity (45) is arranged above the communication cavity (41), the upper end of the plunger (61) extends into the second sliding cavity (45), the telescopic rod of the discharge air cylinder (62) extends into the second sliding cavity (45), and one end of the plunger (61) extending into the second sliding cavity (45) is fixedly connected with the telescopic rod of the discharge air cylinder (62).