Hot air recovery structure and plastic injection molding machine

Abstract

The invention provides a hot air recovery structure and a plastic injection molding machine, and relates to the technical field of injection molding machine equipment. The hot air recovery structure comprises a recovery filter cartridge and a filter part; an air outlet, an air inlet and an air supplementing opening are formed in the recovery filter cartridge; the filter part is arranged in the recovery filter cartridge, an annular space is formed between the filter part and the inner wall of the recovery filter cartridge, and the filter part can separate the air inlet and the air supplement port from the exhaust port. The plastic injection molding machine comprises the hot air recovery structure. The technical effect of recycling the preheated hot air is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machine equipment, in particular to a hot air recovery structure and a plastic injection molding machine. Background Art

[0002] With the development of society, in people's daily life and industrial production process, many metal products have been gradually replaced by plastic products. Existing plastic products are generally mostly made by one-time injection molding. Among the same die-casting molding and extrusion molding, injection molding is the most widely used.

[0003] Before the existing plastic injection molding machine performs injection molding production, it is necessary to preheat the plastic particles and then put the preheated plastic particles into the injection molding equipment. However, in the prior art, the hot air after the preheating of the plastic particles is directly discharged into the factory building, causing heat loss and affecting the environment inside the factory, causing the temperature in the factory building to rise, and the powder generated by the plastic shell will also be blown into the factory building by the hot air, posing a threat to the health of the workers. Summary of the invention

[0004] The purpose of the present invention is to provide a hot air recovery structure and a plastic injection molding machine to alleviate the technical problem in the prior art that direct discharge of preheated hot air affects the production environment.

[0005] In a first aspect, an embodiment of the present invention provides a hot air recovery structure, including a recovery filter cartridge and a filter element;

[0006] The recovery filter cartridge is provided with an exhaust port, an air inlet and an air supply port;

[0007] The filter element is arranged in the recovery filter cartridge, and an annular space is formed between the filter element and the inner wall of the recovery filter cartridge. The filter element can separate the air inlet and the air supply port from the air outlet.

[0008] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the filter element is cylindrical.

[0009] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the axis of the filter element coincides with the axis of the recovery filter cartridge, and the exhaust port is located inside the filter element.

[0010] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the exhaust port is opened at the end of the recovery filter cartridge, and the recovery filter cartridge is provided with an air outlet pipe at the exhaust port.

[0011] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the air inlet is opened on the side wall of the recovery filter cartridge so that the preheated hot air can be directly blown onto the filter element.

[0012] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the above-mentioned air supply port is opened on the side wall of the recovery filter cartridge, and the air supply port is connected to the annular space.

[0013] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a dust removal port is provided on the side wall of the recovery filter cartridge.

[0014] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein the recovery filter cartridge is provided with a dust exhaust pipe located at the dust removal port, and a dust collecting cup is provided on the dust exhaust pipe.

[0015] In combination with the first aspect, an embodiment of the present invention provides a possible implementation of the first aspect, wherein a temperature sensor is provided in the recovery filter cartridge, and a display screen for displaying temperature is provided on the outer wall of the recovery filter cartridge.

[0016] In a second aspect, an embodiment of the present invention provides a plastic injection molding machine, comprising the hot air recovery structure.

[0017] Beneficial effects:

[0018] The present invention provides a hot air recovery structure, comprising a recovery filter cartridge and a filter element; the recovery filter cartridge is provided with an exhaust port, an air inlet and an air supply port; the filter element is arranged in the recovery filter cartridge, and an annular space is formed between the filter element and the inner wall of the recovery filter cartridge, and the filter element can separate the air inlet and the air supply port from the exhaust port.

[0019] Specifically, the hot air recovery structure is installed at the preheating outlet of the plastic injection molding machine when in use. The hot air preheating the plastic particles is discharged to the air inlet of the recovery filter cartridge through the preheating outlet of the plastic injection molding machine. The hot air enters the annular space, and then the hot air passes through the filter element under the action of wind pressure. The hot air is filtered by the filter element to filter out the plastic dust in the hot air, so that the clean hot air passes through the filter element. Then, the clean hot air can be transmitted from the exhaust port to the fan of the drying equipment, so that the clean hot air can be reused, energy consumption is saved, and the environment is protected. In addition, an air supply port is opened on the recovery filter cartridge. When the wind force required by the drying equipment is large, the air supply port is opened to supply air from the outside.

[0020] The present invention provides a plastic injection molding machine, including a hot air recovery structure. Compared with the prior art, the plastic injection molding machine has the above advantages, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a hot air recovery structure provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of a hot air recovery structure provided in an embodiment of the present invention;

[0024] Figure 3 A top view of a hot air recovery structure provided in an embodiment of the present invention;

[0025] Figure 4 for Figure 3 Sectional view of A-A.

[0026] icon:

[0027] 100 - recovery filter cartridge; 110 - exhaust port; 120 - air inlet; 130 - air supply port; 140 - annular space;

[0028] 200 - filter element;

[0029] 300 - Display screen. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0035] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a hot air recovery structure, including a recovery filter cartridge 100 and a filter element 200; the recovery filter cartridge 100 is provided with an exhaust port 110, an air inlet 120 and an air supply port 130; the filter element 200 is arranged in the recovery filter cartridge 100, and an annular space 140 is formed between the filter element 200 and the inner wall of the recovery filter cartridge 100, and the filter element 200 can separate the air inlet 120 and the air supply port 130 from the exhaust port 110.

[0036] Specifically, the hot air recovery structure is installed at the preheating outlet of the plastic injection molding machine when in use. The hot air preheating the plastic particles is discharged to the air inlet 120 of the recovery filter cartridge 100 through the preheating outlet of the plastic injection molding machine, and the hot air enters the annular space 140. Then, under the action of wind pressure, the hot air passes through the filter element 200. The hot air is filtered by the filter element 200 to filter out the plastic dust in the hot air, so that the clean hot air passes through the filter element 200. Then, the clean hot air can be transmitted from the exhaust port 110 to the fan of the drying equipment, so that the clean hot air can be reused, energy consumption can be saved, and the environment can be protected. In addition, an air supply port 130 is opened on the recovery filter cartridge 100. When the wind force required by the drying equipment is large, the air supply port 130 is opened to supply air from the outside.

[0037] The filter element 200 is provided in a cylindrical shape. After the filter element 200 is installed in the recovery filter cartridge 100, an annular space 140 is formed between the filter element 200 and the recovery filter cartridge 100. One end of the filter element 200 abuts against one end of the recovery filter cartridge 100 where the exhaust port 110 is provided, so as to achieve the sealing between the filter element 200 and the recovery filter cartridge 100. Both the air inlet 120 and the air supply port 130 are connected to the annular space 140, and the exhaust port 110 is connected to the interior of the filter element 200. In addition, one end of the recovery filter cartridge 100 can be disassembled, so as to facilitate the maintenance of the filter element 200.

[0038] Among them, a temperature sensor is arranged in the recovery filter cartridge 100, and a display screen 300 for displaying temperature is arranged on the outer wall of the recovery filter cartridge 100. Through the arrangement of the temperature sensor and the display screen 300, the staff can conveniently know the temperature of the hot air in the recovery filter cartridge 100.

[0039] The axis of the filter element 200 coincides with the axis of the recovery filter cartridge 100 , and the air outlet 110 is located inside the filter element 200 .

[0040] It should be pointed out that the two ends of the filter element 200 are sealed against the two ends of the recovery filter cartridge 100 , and the air inlet 120 and the air supply port 130 are both located on the outside of the filter element 200 , so that the airflow entering the recovery filter cartridge 100 must be filtered by the filter element 200 .

[0041] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in an optional solution of this embodiment, the exhaust port 110 is opened at the end of the recovery filter cartridge 100 , and the recovery filter cartridge 100 is provided with an air outlet pipe at the exhaust port 110 .

[0042] Specifically, the exhaust port 110 is opened at the end of the recovery filter cartridge 100 , and the exhaust port 110 is located inside the filter element 200 , so that clean hot air inside the filter element 200 can be discharged from the exhaust port 110 .

[0043] The air supply port 130 is provided on the side wall of the recovery filter cartridge 100, and the air supply port 130 is connected to the annular space 140. In addition, an adjustable switch plate may be provided at the air supply port 130 to adjust the opening size of the air supply port 130.

[0044] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in an optional solution of this embodiment, the air inlet 120 is opened on the side wall of the recovery filter cartridge 100 so that the preheated hot air can be directly blown onto the filter element 200 .

[0045] Specifically, the air inlet 120 is opened on the side wall of the recovery filter cartridge 100, so that the hot air containing dust can directly act on the filter element 200, thereby improving the effect.

[0046] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in an optional solution of this embodiment, a dust removal port is opened on the side wall of the recovery filter cartridge 100 .

[0047] Among them, the recovery filter cartridge 100 is provided with a dust exhaust pipe at the dust removal port, and a dust collecting cup is provided on the dust exhaust pipe.

[0048] Specifically, a dust removal port is opened on the side wall of the recovery filter cartridge 100 , and a dust collecting cup is provided at the dust removal port. Through such a configuration, the staff can easily clean out the plastic dust in the annular space 140 of the recovery filter cartridge 100 .

[0049] This embodiment provides a plastic injection molding machine, including a hot air recovery structure.

[0050] Specifically, the plastic injection molding machine provided in this embodiment has the advantages of the above-mentioned hot air recovery structure compared with the prior art, which will not be described in detail here.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hot air recovery structure, characterized in that: include: Recovering the filter cartridge (100) and the filter element (200); The recovery filter cartridge (100) is provided with an air outlet (110), an air inlet (120) and an air supply outlet (130); The filter element (200) is arranged in the recovery filter cartridge (100), and an annular space (140) is formed between the filter element (200) and the inner wall of the recovery filter cartridge (100). The filter element (200) can separate the air inlet (120) and the air supply port (130) from the air outlet (110).

2. The hot air recovery structure according to claim 1, characterized in that: The filter element (200) is cylindrical.

3. The hot air recovery structure according to claim 2, characterized in that: The axis of the filter element (200) coincides with the axis of the recovery filter cartridge (100), and the air outlet (110) is located inside the filter element (200).

4. The hot air recovery structure according to claim 1, characterized in that: The air outlet (110) is opened at the end of the recovery filter cartridge (100), and the recovery filter cartridge (100) is provided with an air outlet pipe located at the air outlet (110).

5. The hot air recovery structure according to claim 4, characterized in that: The air inlet (120) is opened on the side wall of the recovery filter cartridge (100) so that the preheated hot air can be directly blown onto the filter element (200).

6. The hot air recovery structure according to claim 5, characterized in that: The air supply port (130) is provided on the side wall of the recovery filter cartridge (100), and the air supply port (130) is in communication with the annular space (140).

7. The hot air recovery structure according to any one of claims 1 to 6, characterized in that: A temperature sensor is arranged inside the recovery filter cartridge (100), and a display screen (300) for displaying temperature is arranged on the outer wall of the recovery filter cartridge (100).

8. The hot air recovery structure according to any one of claims 1 to 6, characterized in that: A dust removal port is provided on the side wall of the recovery filter cartridge (100).

9. The hot air recovery structure according to claim 8, characterized in that: The recovery filter cartridge (100) is provided with a dust exhaust pipe located at the dust removal port, and a dust collecting cup is provided on the dust exhaust pipe.

10. A plastic injection molding machine, characterized in that: It comprises the hot air recovery structure as described in any one of claims 1 to 9.

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