A fully automatic heated filling nozzle

Abstract

This utility model discloses a fully automatic heated filling nozzle, comprising a filling body with an inlet and an outlet. A pull rod assembly is provided within the filling body, with a fixedly installed linear drive mechanism connected to the top of the pull rod assembly and a plug suitable for sealing the inlet at the bottom. An internal hollow chamber is provided, containing a heating wire. This utility model changes the traditional method of heated filling nozzles that can only be heated by external media such as steam or heated oil. By designing the pull rod assembly with a hollow chamber structure, a heating wire is embedded within the pull rod assembly. During use, the heating wire continuously provides temperature to achieve the heating function, meeting the filling needs of special materials. Compared to traditional heating methods, it has no special requirements on the internal space of the filling body and the filling speed, meeting the needs of large-scale filling production, providing good filling results, and having a wider range of applications.

Description

Technical Field

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

[0002] As packaging lines become increasingly automated, filling machines remain the most critical process, making the filling nozzle a crucial component. A traditional filling nozzle structure, as illustrated in Chinese invention application CN109231127A, includes a nozzle body. A sealing guide post is positioned at the top of the nozzle body, with one end fixedly connected to a drive shearing rod. The upper end of the sealing guide post is fixedly connected to the output end of a cylinder. A three-way valve body is located inside the nozzle body, with one end connected to a feed inlet. A discharge pipe is fixedly connected to the lower end of the nozzle body via a connecting threaded sleeve, and one end of the three-way valve body inside the nozzle body connects to the discharge outlet. The material pipe has a drive shearing rod that passes through the three-way valve body on the side away from the sealing guide post and is located inside the discharge pipe. A shearing blade is fixedly connected to one end of the drive shearing rod inside the discharge pipe. The bottom end of the discharge pipe is provided with a discharge port. When viscous material enters the discharge pipe from the inlet, the material is filled. After a certain amount of material has been filled, the drive shearing rod, driven by the cylinder, moves the shearing blade downward to quickly cut the material without residue. It continues to move downward to block the discharge port, thus realizing the filling function.

[0003] The filling nozzle with the above structure needs to ensure that the material inside the filling nozzle is in a flowing state. With the rise of the chemical industry, many chemical materials have complex properties and become viscous or even crystallized at low or normal temperatures, making them impossible to fill. This is especially true in northern my country, where production cannot continue once the weather gets cold. Therefore, there is an urgent need to design a new filling nozzle to meet the filling requirements of the above-mentioned materials. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a fully automatic heated filling nozzle that has a heating function, can heat materials to meet filling requirements, and provides good filling results during the production and filling process.

[0005] The technical solution to achieve the purpose of this utility model is:

[0006] An automatic heated filling nozzle includes a filling body with an inlet and an outlet. The filling body is provided with a pull rod assembly. The top of the pull rod assembly is connected to a fixedly installed linear drive mechanism. The bottom is provided with a plug suitable for sealing the inlet. The interior is provided with a hollow cavity, and a heating wire is provided inside the hollow cavity.

[0007] Furthermore, a thermocouple is connected to the top of the heating wire.

[0008] Furthermore, the top of the filling body is detachably provided with a fixed seat, the linear drive mechanism is a cylinder fixedly mounted on the fixed seat, the piston rod end of the cylinder is fixedly mounted with a connecting block, the top of the pull rod assembly is detachably connected to the connecting block and forms a receiving cavity between the connecting blocks, and the thermocouple is disposed in the receiving cavity.

[0009] Furthermore, a flexible partition is fixedly connected to the middle of the pull rod assembly, and the outer ring of the flexible partition is sealed and fixed to the inner wall of the filling body, thereby dividing the filling body into an upper chamber and a lower chamber, with the inlet and outlet both located in the lower chamber.

[0010] Furthermore, an anti-rotation component is connected between the pull rod assembly and the filling body.

[0011] Furthermore, an anti-rotation plate is fixedly mounted on the side of the fixed base, and a through groove extending longitudinally is opened on the anti-rotation plate. An anti-rotation rod is fixedly mounted on the connecting block, and the other end of the anti-rotation rod is inserted into the through groove with a gap. The anti-rotation plate and the anti-rotation rod form the anti-rotation assembly.

[0012] Furthermore, the pull rod assembly includes a lower pull rod, an upper pull rod, and a pull hook arranged sequentially from bottom to top; the filling body includes an upper chamber and a lower chamber; the flexible partition is a diaphragm; the inner ring of the diaphragm is sealed between the upper pull rod and the lower pull rod, and the outer ring is sealed between the upper chamber and the lower chamber.

[0013] Furthermore, the inner ring of the diaphragm is provided with a first annular protrusion, and the bottom of the upper pull rod and the upper part of the lower pull rod are respectively provided with an upper pressure plate and a lower pressure plate, and an annular groove is formed between the upper pressure plate and the lower pressure plate, and the first annular protrusion is sealed in the annular groove.

[0014] Furthermore, the membrane is provided with a second annular protrusion near the inner wall of the filling body, and the bottom of the upper chamber and the top of the lower chamber are respectively provided with annular arc grooves corresponding to the second annular protrusion, with both sides of the annular arc grooves being rounded.

[0015] Furthermore, the upper part of the upper pull rod is fitted with a pressure tube that is fixedly connected to the filling body, and a spring fitted on the upper pull rod is provided between the bottom of the hook and the pressure tube.

[0016] Furthermore, the sealing surface of the plug is spherical, and the discharge port is provided with a chamfer that matches the spherical surface.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] (1) This utility model changes the traditional heating type filling nozzle which can only be heated by external media such as steam or heating oil. By setting the pull rod assembly to have a hollow cavity structure, a heating wire is embedded in the pull rod assembly. When in use, the heating wire will continuously provide temperature to realize the heating function and meet the filling needs of special materials. Compared with the traditional heating method, there are no special requirements for the internal space of the filling body and the filling speed. It meets the needs of mass filling production, provides good filling effect, and has a wider range of applications.

[0019] (2) By adding a thermocouple, this utility model can promptly alarm when a fault occurs, thus effectively controlling its safety and stability.

[0020] (3) The filling body, the pull rod assembly and the linear drive mechanism of this utility model are all detachable, which facilitates disassembly, maintenance or replacement in the later stage; in addition, the specially designed connecting block provides installation space for the thermocouple while playing a connecting role, and also plays a good protective role for the thermocouple.

[0021] (4) This utility model achieves a movable sealed contact between the middle part of the pull rod assembly and the filling body by using a flexible partition. Compared with the traditional sealing ring structure, it can effectively prevent materials from entering the upper chamber when the pull rod assembly moves, thus avoiding contamination of the upper part of the pull rod assembly.

[0022] (5) By setting an anti-rotation component, this utility model ensures that the pull rod assembly can only move back and forth along the axial direction of the filling body, thus avoiding the pull rod assembly from rotating and affecting the sealing performance between it and the filling body.

[0023] (6) The present invention sets both the pull rod assembly and the filling body as a split structure. The upper and lower pull rods and the upper and lower chambers form a limit on the membrane, thereby forming a seal. The structure is simple and easy to assemble.

[0024] (7) This utility model adds a pressure plate to the pull rod and sets a first annular protrusion on the diaphragm to facilitate the sealing connection between the pull rod and the inner ring of the diaphragm and ensure the reliability of the sealing connection.

[0025] (8) This utility model adds a second annular protrusion to the diaphragm and provides corresponding annular arc grooves on the upper and lower chambers. The annular arc grooves provide buffer for the upper and lower deformation of the diaphragm, reduce wear on the diaphragm, and extend its service life.

[0026] (9) By adding a spring, when the pull rod assembly moves down for filling, the spring is compressed and deformed. When the linear drive assembly fails unexpectedly, the pull rod assembly can still be reset under the reverse force of the spring, so that the plug can seal the discharge port again and prevent leakage.

[0027] (10) This utility model uses a spherical structure as the sealing surface, so that the sealing point presents surface contact, which can better control the leakage prevention effect of the material. Attached Figure Description

[0028] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0029] Figure 1 This is a perspective view of the present utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0031] Figure 3 This is a partial structural schematic diagram of the present invention;

[0032] Figure 4 This is a schematic diagram of the assembly structure of the connecting block and the hook of this utility model.

[0033] The labels in the attached diagram are:

[0034] 1. Filling body, 1-1. Inlet, 1-2. Outlet, 1-3. Upper chamber, 1-4. Lower chamber, 2. Pull rod assembly, 2-1. Lower pull rod, 2-1-1. Lower pressure plate, 2-2-1. Upper pull rod, 2-2-1. Pull hook, 2-3-1. Locking block, 3. Linear drive mechanism, 4. Plug, 5. Heating wire, 6. Fixing seat, 7. Connecting block, 7-1. Top plate, 7-2. Side plate, 7-3. Clamping block, 8. Thermocouple, 9. Flexible partition, 9-1. First annular protrusion, 9-2. Second annular protrusion, 10. Anti-rotation plate, 10. Through groove, 10-1. Anti-rotation rod, 11. Pressure tube, 12. Spring. Detailed Implementation

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] (Example 1)

[0037] like Figures 1 to 4 The fully automatic heated filling nozzle shown includes a filling body 1 with an inlet 1-1 and an outlet 1-2. The filling body 1 contains a pull rod assembly 2, with a fixed linear drive mechanism 3 connected to the top of the pull rod assembly 2 and a plug 4 at the bottom suitable for sealing the inlet 1-1. An internal hollow chamber contains a heating wire 5. During use, the heating wire 5 continuously provides temperature to achieve the heating function, meeting the filling requirements of special materials. Compared to traditional heating methods, it has no special requirements on the internal space of the filling body 1 or the filling speed, meeting the needs of large-scale filling production, providing excellent filling results, and having a wider range of applications.

[0038] Specifically, the top of the filling body 1 is provided with a fixed seat 6, and the bottom of the fixed seat 6 is detachably connected to the filling body 1 via a quick-release buckle. The linear drive mechanism 3 is a cylinder fixed to the top of the fixed seat 6. The piston rod of the cylinder is set vertically downward, and a connecting block 7 is fixedly installed at the end. The connecting block 7 includes a top plate 7-1 and side plates 7-2 symmetrically and vertically installed on both sides of the top plate 7-1. The bottom of the side plates is provided with an inwardly extending clamping block 7-3, and a clamping groove is formed between the two clamping blocks 7-3. The pull rod assembly 2 includes a lower pull rod 2-1, an upper pull rod 2-2, and a pull hook 2-3 fixedly connected from bottom to top. The top of the pull hook 2-3 is provided with a locking block 2-3-1 that is slidably installed in the clamping groove. A locking screw that abuts against the locking block is threaded onto the side plate 7-2, thereby realizing the detachable connection between the pull rod assembly 2 and the connecting block 7. By making the filling body 1, the pull rod assembly 2, and the linear drive mechanism 3 all detachably connected, it is convenient for later disassembly, maintenance, or replacement.

[0039] A receiving cavity is formed between the top of the top plate 7-1, the side plate 7-2, the clamping block 7-3 and the top of the hook 2-3. Thermocouple 8, which is electrically connected to the top of the heating wire 5, is installed in the receiving cavity. When a fault occurs, an alarm can be set in time, which can effectively control its safety and stability. The specially structured connecting block 7 not only serves as a connection but also provides installation space for thermocouple 8 and provides good protection for thermocouple 8.

[0040] Considering that some materials have high viscosity, they may adhere to the pull rod assembly 2 during production, easily leaking from the top of the filling body 1. In this embodiment, a flexible partition 9 is fixedly connected to the middle of the pull rod assembly 2. The outer ring of the flexible partition 9 is sealed and fixed to the inner wall of the filling body 1, thereby dividing the filling body 1 into an upper chamber and a lower chamber. The inlet 1-1 and outlet 1-2 are both located in the lower chamber. By using the flexible partition to achieve a movable sealed contact between the middle of the pull rod assembly and the filling body, compared with the traditional sealing ring structure, it can effectively prevent materials from entering the upper chamber when the pull rod assembly moves, avoiding contamination of the upper part of the pull rod assembly 2, or even leakage.

[0041] Specifically, the filling body 1 includes an upper chamber 1-3 and a lower chamber 1-4. The flexible partition 9 is a diaphragm. The inner ring of the diaphragm is sealed between the upper pull rod 2-2 and the lower pull rod 2-1, and the outer ring is sealed between the upper chamber 1-3 and the lower chamber 1-4. To improve sealing, the inner ring of the diaphragm in this embodiment is provided with a first annular protrusion 9-1. The bottom of the upper pull rod 2-2 and the upper part of the lower pull rod 2-1 are respectively provided with an upper pressure plate 2-2-1 and a lower pressure plate 2-1-1. An annular groove is formed between the upper pressure plate 2-2-1 and the lower pressure plate 2-1-1, and the first annular protrusion 9-1 is sealed within the annular groove. The diaphragm is provided with a second annular protrusion 9-2 near the inner wall of the filling body 1. The bottom of the upper chamber 1-3 and the top of the lower chamber 1-4 are respectively provided with annular arc grooves corresponding to the second annular protrusion 9-2, and both sides of the annular arc grooves are rounded.

[0042] An anti-rotation plate 10 is fixedly mounted on the side of the fixed base 6. The anti-rotation plate 10 has a longitudinally extending through groove 10-1. An anti-rotation rod 11 is fixedly mounted on the connecting block 7. The other end of the anti-rotation rod 11 is inserted into the through groove 10-1 with a gap. The anti-rotation plate 10 and the anti-rotation rod 11 form an anti-rotation assembly. This ensures that the pull rod assembly 2 can only move back and forth along the axial direction of the filling body 1, preventing the pull rod assembly 2 from rotating and affecting the sealing performance between it and the filling body 1.

[0043] The sealing surface of the plug 4 is spherical, and the discharge port is provided with a chamfer that matches the spherical surface, so that the sealing part presents surface contact, which can better control the leakage prevention effect of the material.

[0044] The upper pull rod 2-2 is fitted with a pressure tube 12 that is fixedly connected to the filling body 1. A spring 13 is sleeved on the upper pull rod 2-2 between the bottom of the hook 2-3 and the pressure tube 12. When the pull rod assembly 2 moves down for filling, the spring 13 is compressed and deformed. If the cylinder malfunctions, such as a sudden air cut-off, the pull rod assembly 2 can still reset under the reverse force of the spring 13, so that the plug 4 can seal the discharge port again and prevent leakage.

[0045] During operation, the material enters the lower chamber, the cylinder is inflated and opens, driving the pull rod assembly 2 downwards. Thanks to the diaphragm's excellent flexibility, it can flip up and down like a drumhead, without interfering with the movement of the pull rod assembly 2, and perfectly isolating the upper and lower spaces, preventing material from seeping into the upper part. At this time, the plug 4 is open, the material flows out, and is filled into the packaging container, completing the filling process. After filling, the cylinder is inflated and moves upwards, driving the plug 4 upwards via the pull rod assembly 2, achieving a second sealing action – this is the closing action. This process constitutes one filling cycle; repeating this cycle achieves fully automated filling. When the material's properties cause it to solidify, the heating wire is energized to heat it, ensuring normal filling.

[0046] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fully automatic heated filling nozzle, characterized in that: The filling body includes a filling body with an inlet and an outlet. The filling body is provided with a pull rod assembly. The top of the pull rod assembly is connected to a fixedly installed linear drive mechanism. The bottom is provided with a plug suitable for sealing the inlet. The filling body is provided with a hollow cavity, and a heating wire is provided inside the hollow cavity.

2. The fully automatic heated filling nozzle according to claim 1, characterized in that: A thermocouple is connected to the top of the heating wire.

3. The fully automatic heated filling nozzle according to claim 2, characterized in that: The top of the filling body is detachably provided with a fixed seat, the linear drive mechanism is a cylinder fixedly mounted on the fixed seat, the piston rod end of the cylinder is fixedly mounted with a connecting block, the top of the pull rod assembly is detachably connected to the connecting block and forms a receiving cavity between the connecting blocks, and the thermocouple is located in the receiving cavity.

4. The fully automatic heated filling nozzle according to claim 1, characterized in that: A flexible partition is fixedly connected to the middle of the pull rod assembly. The outer ring of the flexible partition is sealed and fixed to the inner wall of the filling body, thereby dividing the filling body into an upper chamber and a lower chamber. The inlet and outlet are both located in the lower chamber.

5. The fully automatic heated filling nozzle according to claim 4, characterized in that: An anti-rotation component is connected between the pull rod assembly and the filling body.

6. The fully automatic heated filling nozzle according to claim 4, characterized in that: The pull rod assembly includes a lower pull rod, an upper pull rod, and a pull hook arranged sequentially from bottom to top. The filling body includes an upper chamber and a lower chamber. The flexible partition is a diaphragm. The inner ring of the diaphragm is sealed between the upper pull rod and the lower pull rod, and the outer ring is sealed between the upper chamber and the lower chamber.

7. The fully automatic heated filling nozzle according to claim 6, characterized in that: The inner ring of the diaphragm is provided with a first annular protrusion. The bottom of the upper pull rod and the upper part of the lower pull rod are respectively provided with an upper pressure plate and a lower pressure plate. An annular groove is formed between the upper pressure plate and the lower pressure plate. The first annular protrusion is sealed in the annular groove.

8. The fully automatic heated filling nozzle according to claim 7, characterized in that: The membrane is provided with a second annular protrusion near the inner wall of the filling body. The bottom of the upper chamber and the top of the lower chamber are respectively provided with annular arc grooves corresponding to the second annular protrusion. Both sides of the annular arc grooves are rounded.

9. The fully automatic heated filling nozzle according to claim 6, characterized in that: The upper part of the upper pull rod is fitted with a pressure tube that is fixedly connected to the filling body, and a spring is fitted on the upper pull rod between the bottom of the hook and the pressure tube.

10. The fully automatic heated filling nozzle according to claim 1, characterized in that: The sealing surface of the plug is spherical, and the discharge port is provided with a chamfer that matches the spherical surface.

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