CN215664265U

CN215664265U - Constant temperature sealing device

Info

Publication number: CN215664265U
Application number: CN202120884217.9U
Authority: CN
Inventors: 李想; 李琦
Original assignee: Shanghai Qiran Biotechnology Co ltd
Current assignee: Shanghai Qiran Biotechnology Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2022-01-28
Anticipated expiration: 2031-04-27

Abstract

The utility model relates to a constant-temperature heat sealing device which comprises a liquid storage tank, a heating block and a plurality of guide pipes, wherein a partition plate capable of moving up and down is arranged in the liquid storage tank, the partition plate divides an inner cavity of the liquid storage tank into a liquid guide cavity and a heating cavity, the liquid guide cavity and the heating cavity are arranged one above the other, an opening for communicating the liquid guide cavity with the heating cavity is formed in the partition plate, a sealing cover which is opened towards the heating cavity in a one-way mode is arranged at the opening, a liquid inlet end of each guide pipe is communicated with the heating cavity, a liquid outlet end of each guide pipe is communicated with the liquid guide cavity through the heating cavity and the partition plate in sequence, the heating block is positioned below the liquid storage tank, the middle of each guide pipe is positioned in the heating block, a heating rod is horizontally inserted in the heating cavity, and heat conduction liquid is filled in the liquid guide cavity, the heating cavity and the guide pipes. Compared with the prior art, the utility model can ensure that the temperature control is more accurate during heat sealing, the heating block is heated uniformly, and the defective rate of the heat-sealing packaging bag is reduced.

Description

Constant temperature sealing device

Technical Field

The utility model relates to the field of heat sealing devices, in particular to a constant-temperature heat sealing device.

Background

With the rapid development of social and economic commerce, the range of sealed packaging bags used by commodities such as food, medicine, chemical fertilizer, pesticide, daily necessities and the like is wider and wider; after the product is packed into the packaging bag, in order to keep the product sealed, maintain the product quality and avoid the product loss, the packaging bag needs to be sealed, and the corners of the packaging bag are usually heat-sealed by a heat sealing machine. When in heat sealing, a heat sealing machine is generally used, a heat sealing head on the heat sealing machine is heated, a packaging bag to be heat-sealed is placed below the heat sealing head, and the heat sealing head is driven to move downwards by a driving part, so that the heat sealing head is contacted with corners of the packaging bag, and the heat sealing of the packaging bag is completed. At present, a heat sealing head is usually heated by a heating rod, but the temperature of the heating rod is difficult to control, and the heat sealing surface of the heat sealing head has uneven temperature distribution, so that the conditions of uneven and uneven heat sealing can occur, the defective rate of a packaging bag heat sealing process is high, and the production cost is increased. Taking a 160 ℃ heat shrinkable film as an example, 160 ℃ is set during heat sealing, at the moment, the heating equipment stops working, but the waste heat can still continue to rise to 5-10 ℃ to cause the deformation of the shrinkable film, and in the process of temperature reduction, although the heating equipment is started, the temperature can fall by 5-10 ℃ to cause insufficient temperature, so that the heat sealing work cannot be completed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a constant-temperature heat sealing device.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a constant temperature sealing device, includes liquid reserve tank, heating piece and a plurality of pipe, be equipped with the baffle that can reciprocate in the liquid reserve tank, the baffle divide into drainage chamber and heating chamber with the inner chamber of liquid reserve tank, drainage chamber and heating chamber set up one on the other, be equipped with the opening that communicates drainage chamber and heating chamber on the baffle, the opening part is equipped with towards the one-way closing cap of opening of heating chamber, the feed liquor end of pipe communicates with each other with the heating chamber, the play liquid end of pipe communicates with each other with drainage chamber through heating chamber and baffle again in proper order, the heating piece is located the below of liquid reserve tank, the middle part of pipe is located the heating piece, the level is inserted and is equipped with the heating rod in the heating chamber, it has heat conduction liquid all to fill in drainage chamber, heating chamber and the pipe.

The liquid inlet end is provided with a liquid inlet one-way valve, and the liquid outlet end is provided with a liquid outlet one-way valve. The heat conduction liquid can enter from the liquid inlet end and flow out from the liquid outlet end, the heat conduction liquid can flow in the conduit in one direction conveniently, and the heat conduction liquid after heat exchange is prevented from exchanging heat with the heating block.

The heating rod comprises an installation part and a heating part, the installation part is located on the outer side of the liquid storage box, and the heating part is located in the heating cavity.

And a resistance wire is arranged in the inner cavity of the heating part and is filled with crystallized magnesium oxide powder. The crystallized magnesia powder has good heat-conducting property and insulating property, and when current passes through the resistance wire, the generated heat is diffused to the surface of the heating part through the crystallized magnesia powder and then is transferred to the heat-conducting liquid.

The heating rod further comprises a rotating motor in transmission connection with the installation part, and stirring blades are arranged at the end part of the heating part. Stirring vane can realize being located the thermally conductive liquid's of heating intracavity thermally equivalent for thermally conductive liquid can not local intensification too fast, can wholly heat up in step.

The heat-conducting liquid is silicon oil which has good heat-insulating property.

The device still includes two thermocouple probes, integrated temperature controller and temperature display appearance, thermocouple probe arranges respectively in heating chamber and drainage chamber, thermocouple probe is connected with integrated temperature controller and temperature display appearance electricity respectively, integrated temperature controller still is connected with the heating rod electricity.

The part of the conduit in the heating block is U-shaped, so that the heating block can be conveniently and uniformly conducted with heat.

The plurality of guide pipes are arranged at intervals in sequence along the length direction of the heating block, the liquid inlet ends and the liquid outlet ends of the adjacent guide pipes are arranged in a staggered mode (namely, the liquid inlet end of one guide pipe is positioned on the left side, and the liquid inlet end of the adjacent guide pipe is positioned on the right side), so that the heating block is heated more uniformly, the temperature of the heating surface of the heating block is uniform, and the uniform heat sealing of the packaging bag is realized.

The device also comprises a push rod which is inserted into the liquid storage box from top to bottom and is connected with the partition plate through the liquid guide cavity. The push rod can be driven electrically, pneumatically and the like, manual driving is not needed, the partition plate can move slowly at a constant speed, the flow rate of the heat-conducting liquid is uniform, and heat transfer is uniform.

In the utility model, in order to enable the liquid inlet end and the liquid outlet end of the adjacent guide pipes of the guide pipes to be arranged in a staggered manner, the whole lower part of the liquid storage tank is required to be a communicated cavity, in order to reduce the heat loss of the heat-conducting liquid, the cavity at the lower part is set as a heating cavity, namely, the heating cavity is arranged below the liquid guide cavity, the heated heat-conducting liquid can reach the heating block through fewer paths, and in addition, the sealing cover is arranged at the opening to prevent the heat-conducting liquid in the heating cavity from flowing back to the liquid guide cavity. The utility model can ensure that the temperature control is more accurate during heat sealing, the heating block is heated uniformly, and the defective rate of the heat-sealing packaging bag is reduced.

Drawings

FIG. 1 is a front sectional view of a thermostatic heat-sealing device;

FIG. 2 is a side view of the thermostatic heat-sealing device;

fig. 3 is a schematic structural view of the heating rod.

In the figure: 1-a liquid storage tank; 101-a drainage lumen; 102-a heating chamber; 2-heating block; 3-a catheter; 301-liquid inlet end; 302-liquid outlet end; 303-liquid inlet one-way valve; 304-liquid outlet one-way valve; 4-a separator; 401-opening; 402-sealing cover; 5-heating rod; 501-an installation part; 502-a heating section; 503-resistance wire; 504-crystalline magnesium oxide powder; 505-a rotating electrical machine; 506-stirring blades; 6-thermocouple probe; 7-integrated temperature controller; 8-temperature display instrument; 9-push rod.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments.

Examples

As shown in fig. 1 and 2, a constant temperature heat sealing device comprises a liquid storage tank 1, a heating block 2, a plurality of guide tubes 3, two thermocouple probes 6, an integrated temperature controller 7, a temperature display instrument 8 and a push rod 9, wherein a partition plate 4 capable of moving up and down is arranged in the liquid storage tank 1, the partition plate 4 divides an inner cavity of the liquid storage tank 1 into a liquid guide cavity 101 and a heating cavity 102, the liquid guide cavity 101 and the heating cavity 102 are arranged one above the other, the push rod 9 (which can be pneumatic, electric and the like) is inserted into the liquid storage tank 1 from top to bottom and is connected with the partition plate 4 through the liquid guide cavity 101, an opening 401 for communicating the liquid guide cavity 101 with the heating cavity 102 is arranged on the partition plate 4, a sealing cover 402 which is opened towards the heating cavity 102 in one direction is arranged at the opening 401 (when the device is placed in the direction shown in fig. 1, the sealing cover 402 can be opened in one direction through gravity, and the size of the sealing cover is set to be larger than the size of the opening at the moment), the liquid inlet end 301 of the guide pipe 3 is communicated with the heating cavity 102, the liquid inlet end 301 is provided with a liquid inlet one-way valve 303, the liquid outlet end 302 of the guide pipe 3 is communicated with the liquid guide cavity 101 through the heating cavity 102 and the partition plate 4 in sequence, the liquid outlet end 302 is provided with a liquid outlet one-way valve 304, the heating block 2 is positioned below the liquid storage tank 1, a plurality of guide pipes 3 are arranged at intervals in sequence along the length direction of the heating block 2 (the specific number and the interval of the guide pipes can be set according to the requirements of heat sealing temperature, heat sealing effect, heating rod heating temperature and the like), the liquid inlet end 301 and the liquid outlet end 302 of the adjacent guide pipes 3 are staggered, the middle parts of the guide pipes 3 are positioned in the heating block 2, the parts of the guide pipes 3 positioned in the heating block 2 are U-shaped, the heating rod 5 is horizontally inserted in the heating cavity 102, the liquid guide cavity 101, the heating cavity 102 and the guide pipes 3 are filled with heat-conducting liquid, the heat-conducting liquid can be silicon oil, and the thermocouple probes 6 are respectively arranged in the heating cavity 102 and the liquid guide cavity 101, the thermocouple probe 6 is respectively electrically connected with the integrated temperature controller 7 and the temperature display instrument 8, the integrated temperature controller 7 is also electrically connected with the heating rod 5, the integrated temperature controller 7 and the temperature display instrument 8 are both arranged on the outer side surface of the liquid storage tank 1, and the temperature on the temperature display instrument 8 in fig. 2 is only an example.

As shown in fig. 3, the heating rod 5 includes a rotating motor 505, a mounting portion 501, a heating portion 502 and a stirring blade 506, the rotating motor 505 and the mounting portion 501 are located outside the liquid storage tank 1, the rotating motor 505 is located at an end portion of the mounting portion 501 and is in transmission connection with the mounting portion 501, the heating portion 502 is located in the heating chamber 102, a resistance wire 503 is provided in an inner cavity of the heating portion 502 and is filled with crystalline magnesium oxide powder 504, and the stirring blade 506 is provided at an end portion of the heating portion 502. The directions such as "upper" and "lower" in the present embodiment are described only with reference to the drawings, and are not equivalent to actual directions, but the positional relationship between the respective members is determined by the drawings and the characters in the embodiments.

When the utility model is used, an object to be heat-sealed (namely a packaging bag) is placed on a workbench, the heating rod is started to heat the heat-conducting liquid, when the heat-conducting liquid is heated to a required temperature (which can be known through the matching of the thermocouple probe and the temperature display instrument), the push rod is started to enable the heat-conducting liquid to start flowing, so that heat is transferred to the heating block, then the heating block is pressed on the object to be heat-sealed, a heat-sealing surface is in contact with a part to be heat-sealed of the object to be heat-sealed, and heat sealing is started.

The embodiments described above are intended to facilitate the understanding and use of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims

1. The constant-temperature heat sealing device is characterized by comprising a liquid storage box (1), a heating block (2) and a plurality of guide pipes (3), wherein a partition plate (4) capable of moving up and down is arranged in the liquid storage box (1), the partition plate (4) divides an inner cavity of the liquid storage box (1) into a liquid guide cavity (101) and a heating cavity (102), the liquid guide cavity (101) and the heating cavity (102) are arranged one on the other, an opening (401) for communicating the liquid guide cavity (101) with the heating cavity (102) is formed in the partition plate (4), a sealing cover (402) which is opened towards the heating cavity (102) in a one-way mode is arranged at the position of the opening (401), a liquid inlet end (301) of each guide pipe (3) is communicated with the heating cavity (102), a liquid outlet end (302) of each guide pipe (3) is communicated with the liquid guide cavity (101) through the heating cavity (102) and the partition plate (4) in sequence, and the heating block (2) is positioned below the liquid storage box (1), the middle part of pipe (3) is located heating block (2), heating rod (5) are inserted to level in heating chamber (102), all pack in drain chamber (101), heating chamber (102) and pipe (3) and have heat conduction liquid.

2. A thermostatic heat-sealing device according to claim 1, wherein said inlet end (301) is provided with an inlet check valve (303), and said outlet end (302) is provided with an outlet check valve (304).

3. A thermostatic heat-sealing device according to claim 1, wherein the heating rod (5) includes a mounting portion (501) and a heating portion (502), the mounting portion (501) being located outside the reservoir (1), the heating portion (502) being located in the heating chamber (102).

4. A thermostatic heat-sealing device according to claim 3 wherein the heating portion (502) has an internal cavity containing a resistance wire (503) and filled with crystalline magnesium oxide powder (504).

5. A thermostatic heat-sealing device according to claim 3, wherein the heating rod (5) further comprises a rotary motor (505) drivingly connected to the mounting portion (501), and the end portion of the heating portion (502) is provided with a stirring blade (506).

6. A thermostatic heat-sealing device according to claim 1 wherein the heat-conducting liquid is silicone oil.

7. A thermostatic heat-sealing device according to claim 1, characterized in that it further comprises two thermocouple probes (6), an integrated temperature controller (7) and a temperature display (8), said thermocouple probes (6) being respectively arranged in the heating chamber (102) and the drainage chamber (101), said thermocouple probes (6) being respectively electrically connected to the integrated temperature controller (7) and the temperature display (8), said integrated temperature controller (7) being also electrically connected to the heating rod (5).

8. A thermo-sealing device according to claim 1, characterised in that the portion of the duct (3) located in the heating block (2) is U-shaped.

9. A thermostatic heat-sealing device according to claim 1, characterized in that a plurality of conduits (3) are arranged at intervals in sequence along the length direction of the heating block (2), and the inlet ends (301) and the outlet ends (302) of adjacent conduits (3) are staggered.

10. A thermostatic heat-sealing device according to claim 1, characterized in that it further comprises a push rod (9), said push rod (9) being inserted into the reservoir (1) from top to bottom and connected to the partition (4) via the liquid-conducting chamber (101).