Vacuum drying equipment and vacuum system thereof

Abstract

The utility model provides a vacuum system of vacuum drying equipment. The vacuum system comprises a discharging unit and a feeding unit, the control unit is used for controlling the discharging unit; the filtering unit is used for filtering discharged gas; the discharging unit comprises an air exhaust pipeline, and the air exhaust pipeline is arranged on the side, close to the top, in a drying cavity of the vacuum drying equipment. The discharge-in unit comprises an air inlet pipeline, and the air inlet pipeline is located on the side, close to the bottom, in the drying cavity. The vacuum system of the vacuum drying equipment achieves the technical effects of improving the drying efficiency, uniformly drying, reducing the energy consumption, improving the equipment stability, improving the operation environment and the like through an upper-exhaust and lower-suction gas flowing mode compared with an upper-exhaust and lower-exhaust mode in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum drying equipment, and more specifically relates to vacuum drying equipment and a vacuum system thereof. Background Art

[0002] Vacuum drying equipment plays a vital role in the pharmaceutical, food, chemical, ceramic, metal processing and electronics industries. Its working principle relies on the vacuum pump to extract the air in the drying room of the drying equipment, reduce the pressure, thereby reducing the boiling point of water, and quickly dehumidify the material at low temperature.

[0003] Especially in the electronics industry, sensitive materials such as circuit board components need to be dried in a dust-free, low-oxygen environment to avoid contamination and oxidation. Although traditional vacuum drying equipment can provide such an environment, its vacuum structure often has design deficiencies that affect the drying effect. For example, in the automatic silicon pickling cleaning equipment of solar photovoltaic cleaning equipment, although the drying chamber can dry the material, the water molecules on the surface of the material often cannot be completely evaporated, and the presence of metal ions in the air will cover the surface of the material, destroying the quality of the material and failing to meet the requirements of subsequent production processes.

[0004] Therefore, it is necessary to propose a new solution to the problem that the existing vacuum drying equipment and its vacuum structure are unreasonable. Summary of the invention

[0005] The utility model aims to overcome the problem of poor drying effect of existing vacuum drying equipment and its vacuum structure. The utility model aims at vacuum drying equipment and its vacuum structure, and proposes a vacuum drying equipment and its vacuum system, aiming to improve the drying environment, and improve the drying efficiency and quality.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In the first aspect, the utility model provides a vacuum system of a vacuum drying device, comprising a discharge unit and a discharge unit; further comprising a control unit for controlling the discharge unit and a filter unit for filtering the discharged gas; the discharge unit comprises an exhaust pipe, which is arranged in a drying chamber of the vacuum drying device near the top side; the discharge unit comprises an intake pipe, which is in the drying chamber near the bottom side.

[0008] As a preferred embodiment, the exhaust duct includes a first exhaust duct and a second exhaust duct respectively arranged along the length direction of the two side walls of the drying chamber; a plurality of first exhaust holes are evenly spaced on the first exhaust duct along the length direction of the drying chamber; a plurality of second exhaust holes are evenly spaced on the second exhaust duct along the length direction of the drying chamber.

[0009] As a preferred solution, the exhaust unit further includes a water vapor separator for separating water vapor; a connecting portion of the first air extraction pipeline and the second air extraction pipeline forms a collecting section, and the collecting section is connected to the water vapor separator.

[0010] As a preferred solution, the discharge unit further comprises an air intake connection section arranged outside the drying chamber; a plurality of air intake pipes are evenly arranged along the width direction of the drying chamber, and each of the air intake pipes is arranged along the length direction of the drying chamber.

[0011] As a preferred solution, a plurality of air inlet holes are evenly spaced along the length direction of the drying chamber on the air inlet duct; the aperture of the air inlet hole is set to 2 mm.

[0012] As a preferred solution, the control unit includes a power component for providing suction power, a detection component for detecting the vacuum pressure in the drying chamber, and a switch component for control; the control unit also includes a protection component for protecting the power component.

[0013] In a second aspect, the utility model provides a vacuum drying device, comprising a drying chamber, a heating system, and the vacuum system as described in the first aspect; further comprising a loading system for loading materials to be vacuum dried and a fixing system for fixing the loading system; the heating system comprises a side wall heating unit arranged on the side wall of the drying chamber of the vacuum drying device and a bottom heating unit arranged at the bottom of the drying chamber; the fixing system comprises a avoidance unit for protecting the heating system and the vacuum system and a supporting unit for supporting the loading system.

[0014] As a preferred solution, the side wall heating unit includes multiple groups of side wall heating components, and each group of side wall heating components is evenly distributed along the height direction of the drying chamber; the bottom heating unit includes a bottom heating sub-unit arranged along the length direction of the drying chamber, and an auxiliary heating sub-unit for assisting the bottom heating sub-unit.

[0015] As a preferred solution, the avoidance unit includes at least two avoidance members; the avoidance member includes a connecting portion for connecting to the drying chamber and a protecting portion for protecting the vacuum system; an avoidance section is provided between the connecting portion and the protecting portion.

[0016] As a preferred solution, the support unit includes a support plate and a mounting plate for mounting the support plate; the number and position of the support plates correspond to the avoidance member.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The vacuum system of the vacuum drying equipment achieves technical effects such as improved drying efficiency, uniform drying, reduced energy consumption, improved equipment stability and improved operating environment through the gas flow mode of upper discharge and lower suction compared to the upper suction and lower discharge mode in the prior art.

[0019] The vacuum drying equipment, by integrating the drying chamber, the vacuum system, the heating system, the driving system, the loading system and the fixing system, forms a vacuum drying equipment with a complete structure and clear functions. Through the coordinated work of various systems, the drying efficiency is improved and the material quality is maintained. The equipment has high technical practicality and market application prospects.

[0020] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 1 It is a structural schematic diagram of a vacuum system of a vacuum drying device described in the utility model.

[0023] Figure 2 It is a partial structural schematic diagram of a vacuum system of a vacuum drying device described in the utility model.

[0024] Figure 3 It is a partial structural schematic diagram of a vacuum system of a vacuum drying device described in the utility model.

[0025] Figure 4 It is a partial structural schematic diagram of a vacuum system of a vacuum drying device described in the utility model.

[0026] Figure 5 It is a side view of a vacuum system of a vacuum drying device described in the utility model.

[0027] Figure Number:

[0028] 01. Vacuum system;

[0029] 100. discharge unit;

[0030] 110, air extraction pipeline; 111, first air extraction pipeline; 1111, first air extraction hole; 112, second air extraction pipeline; 1121, second air extraction hole; 113, collecting section;

[0031] 120. Water vapor separator;

[0032] 200, discharge unit;

[0033] 210, air intake duct; 211, air intake hole;

[0034] 220, air intake connection section;

[0035] 300. control unit;

[0036] 310, power part; 320, detection part; 330, switch part; 340, protection part;

[0037] 400, filtering unit;

[0038] 02. Drying chamber;

[0039] 03. Heating system;

[0040] 510, side wall heating unit; 511, side wall heating assembly;

[0041] 520, bottom heating unit; 521, bottom heating subunit; 522, auxiliary heating subunit;

[0042] 04. Loading system;

[0043] 05.Fixed system;

[0044] 610, avoidance unit; 611, avoidance member; 6111, connecting portion; 6112, protection portion; 6113, avoidance section;

[0045] 620, support unit; 621, support plate; 622, mounting plate. DETAILED DESCRIPTION

[0046] The utility model is further described below in conjunction with the drawings and specific embodiments of the specification. A person of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the utility model involved in the following description are usually only embodiments of a part of the utility model, rather than all embodiments. Therefore, based on the embodiments in the utility model, all other embodiments obtained by a person of ordinary skill in the art without making creative work should belong to the scope of protection of the utility model. In addition, the terms "vertical", "horizontal", "front", "rear", etc. mentioned in the embodiments of the utility model indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when used, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. It should be further explained that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like in the description should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0047] Embodiment 1:

[0048] like Figure 1-5 As shown, this embodiment provides a vacuum system 01 of a vacuum drying device, including a discharge unit 100 and a discharge unit 200, and also includes a control unit 300 for controlling the discharge unit 100 and a filter unit 400 for filtering the discharged gas. This embodiment achieves technical effects such as improving drying efficiency, uniform drying, reducing energy consumption, improving equipment stability and improving operating environment through the gas flow mode of upper discharge and lower suction, compared with the upper suction and lower discharge mode in the prior art. Specifically, the gas flow mode of upper discharge and lower suction can make the material dehydrate faster during the drying process. When air is extracted, moisture and other volatile substances will be discharged together with the air, thereby accelerating the drying process. It can be understood that when the vacuum system 01 is applied to work in a high temperature environment, the filtered gas filled into the drying chamber 02 through the discharge unit 200 can generate heat convection, and accelerating the gas flow in the drying chamber 02 can ensure the drying efficiency of each corner of the drying chamber 02. This embodiment combines heat radiation, heat convection and conduction to achieve the best drying effect. In addition, this structural setting has lower requirements for the gas introduced. Air can be used without the need to use nitrogen, which effectively reduces costs.

[0049] The exhaust unit 100 includes an exhaust pipe 110, which is arranged in the drying chamber 02 of the vacuum drying equipment near the top side. The exhaust pipe 110 includes a first exhaust pipe 111 and a second exhaust pipe 112 respectively arranged along the length direction of the two side walls of the drying chamber 02, and the first exhaust pipe 111 is evenly spaced along the length direction of the drying chamber 02. The second exhaust pipe 112 is evenly spaced along the length direction of the drying chamber 02. A plurality of second exhaust holes 1121 are evenly spaced. The exhaust unit 100 also includes a water vapor separator 120 for separating water vapor. The connection between the first exhaust pipe 111 and the second exhaust pipe 112 forms a collection section 113, and the collection section 113 is connected to the water vapor separator 120. The arrangement of the water vapor separator 120 can effectively separate the water vapor in the exhaust gas, prevent the water vapor from corroding and damaging other parts of the drying equipment, and extend the service life of the equipment.

[0050] The discharge unit 200 includes an air intake pipe 210, and the air intake pipe 210 is located near the bottom side of the drying chamber 02. The discharge unit 200 also includes an air intake connection section 220 arranged outside the drying chamber 02. A plurality of air intake pipes 210 are evenly arranged along the width direction of the drying chamber 02, and each of the air intake pipes 210 is arranged along the length direction of the drying chamber 02. A plurality of air intake holes 211 are evenly spaced on the air intake pipe 210 along the length direction of the drying chamber 02, and the aperture of the air intake hole 211 is set to 2 mm.

[0051] The control unit 300 includes a power member 310 for providing air extraction power, a detection member 320 for detecting the vacuum pressure in the drying chamber 02, and a switch member 330 for control, and the control unit 300 also includes a protection member 340 for protecting the power member 310. More specifically, this embodiment provides a preferred implementation of the control unit 300, the power member 310 can be a vacuum pump, the detection member 320 can be a vacuum gauge, the switch member 330 can be a solenoid valve, and the protection member 340 can be a HF filter.

[0052] Embodiment 2:

[0053] like Figure 1-5 As shown, this embodiment provides a vacuum drying device, including a drying chamber 02, a heating system 03 and the vacuum system 01 as described in the first embodiment, and also includes a loading system 04 for loading materials to be vacuum dried and a fixing system 05 for fixing the loading system 04.

[0054] It can be understood that the drying chamber 02 provides a place for vacuum drying and establishes basic conditions for vacuum drying of materials. The vacuum system 01 is responsible for extracting air in the drying chamber 02 to reduce pressure, thereby reducing the boiling point of the material and accelerating the drying process. The heating system 03 is used to provide the heat required for drying. The function of the fixing system 05 is to ensure the stability of the loading system 04 and prevent the material from moving or tilting during the drying process. This embodiment integrates the drying chamber 02, the vacuum system 01, the heating system 03, the driving system, the loading system 04 and the fixing system 05 to form a vacuum drying device with a complete structure and clear functions. Specifically, when vacuum drying the material, firstly, the heating system 03 transfers heat through thermal radiation, which can directly heat the surface of the material to increase the temperature of the material, thereby accelerating the migration of moisture from the inside of the material to the surface. Secondly, the discharge unit 100 provides a low-pressure, fast and efficient drying environment for material drying, which is particularly suitable for materials that are easily deteriorated or damaged at high temperatures. The gas that is discharged through the discharge unit 200 and has been filtered efficiently can accelerate the gas flow in the drying chamber 02, and generate heat convection under the thermal radiation of the heating system 03, so that all parts of the drying chamber 02 can be fully dried. It can be seen that this embodiment improves the drying efficiency and maintains the quality of the material through the coordinated work of various systems, and has high technical practicality and market application prospects.

[0055] The heating system 03 includes a side wall heating unit 510 arranged on the side wall of the drying chamber 02 of the vacuum drying equipment and a bottom heating unit 520 arranged at the bottom of the drying chamber 02. Furthermore, this embodiment provides a preferred mode of the side wall heating unit 510 and the bottom heating unit 520, and both the side wall heating unit 510 and the bottom heating unit 520 can adopt infrared heating tubes. The working principle of the infrared heating tube is based on the radiation characteristics of infrared rays. When the current passes through the infrared emitting element, the element will heat up and emit infrared rays. These infrared rays have different wavelengths, and a part of them is reflected back to the emitting element by the reflecting element, thereby enhancing the heating effect. The main advantages of the infrared heating tube are high thermal efficiency, fast heating speed, and no open flame, so it is very useful in some specific applications. The joint operation of the side wall heating assembly 511 and the bottom heating unit 520 ensures the all-round and uniform heating of the material in the drying chamber 02, avoiding the problems of heat accumulation and unevenness.

[0056] The side wall heating unit 510 includes a plurality of side wall heating components 511, each of which is evenly distributed along the height direction of the drying chamber 02. The bottom heating unit 520 includes a bottom heating sub-unit 521 arranged along the length direction of the drying chamber 02, and an auxiliary heating sub-unit 522 for assisting the bottom heating sub-unit 521. It can be understood that the edge of the drying chamber 02 dissipates heat faster, and in order to maintain the thermal stability of each area of ​​the drying chamber 02, the auxiliary heating sub-unit 522 can be arranged at the edge of the drying chamber 02.

[0057] The fixing system 05 includes a avoidance unit 610 for protecting the heating system 03 and the vacuum system 01 and a support unit 620 for supporting the loading system 04. The avoidance unit 610 includes at least two avoidance members 611, and the avoidance member 611 includes a connecting portion 6111 for connecting to the drying chamber 02 and a protecting portion 6112 for protecting the vacuum system 01, and an avoidance section 6113 is provided between the connecting portion 6111 and the protecting portion 6112. Furthermore, the protecting portion 6112 is provided with heat dissipation holes to facilitate easier penetration of heat radiation, reduce the impact on the heat released by the side wall heating assembly 511, and ensure drying efficiency. The support unit 620 includes a support plate 621 and a mounting plate 622 for mounting the support plate 621, and the number and position of the support plate 621 correspond to the avoidance member 611.

[0058] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0059] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0060] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of the implementation scheme of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A vacuum system for vacuum drying equipment, characterized in that: It comprises a discharge unit (100) and a discharge unit (200); It also includes a control unit (300) for controlling the exhaust unit (100) and a filtering unit (400) for filtering the exhausted gas; The exhaust unit (100) comprises an air extraction pipeline (110), and the air extraction pipeline (110) is arranged in a drying chamber (02) of the vacuum drying equipment, close to the top side; The discharge unit (200) comprises an air intake duct (210), and the air intake duct (210) is located in the drying chamber (02) close to the bottom side.

2. The vacuum system of a vacuum drying equipment according to claim 1, characterized in that: The air extraction pipeline (110) comprises a first air extraction pipeline (111) and a second air extraction pipeline (112) respectively arranged along the length direction of two side walls of the drying chamber (02); The first air extraction pipe (111) is provided with a plurality of first air extraction holes (1111) at even intervals along the length direction of the drying chamber (02); The second air extraction pipe (112) is provided with a plurality of second air extraction holes (1121) evenly spaced along the length direction of the drying chamber (02).

3. The vacuum system of a vacuum drying device according to claim 2, characterized in that: The exhaust unit (100) further comprises a water vapor separator (120) for separating water vapor; The connection between the first air extraction pipeline (111) and the second air extraction pipeline (112) forms a collecting section (113), and the collecting section (113) is connected to the water vapor separator (120).

4. The vacuum system of a vacuum drying equipment according to claim 1, characterized in that: The discharge unit (200) further comprises an air intake connection section (220) arranged outside the drying chamber (02); A plurality of the air intake ducts (210) are evenly arranged along the width direction of the drying chamber (02), and each of the air intake ducts (210) is arranged along the length direction of the drying chamber (02).

5. The vacuum system of a vacuum drying device according to claim 4, characterized in that: The air inlet duct (210) is provided with a plurality of air inlet holes (211) evenly spaced along the length direction of the drying chamber (02); The aperture of the air inlet hole (211) is set to 2 mm.

6. The vacuum system of a vacuum drying device according to claim 1, characterized in that: The control unit (300) comprises a power component (310) for providing air extraction power, a detection component (320) for detecting the vacuum pressure in the drying chamber (02), and a switch component (330) for control; The control unit (300) further comprises a protection member (340) for protecting the power member (310).

7. A vacuum drying device, characterized in that: It comprises a drying chamber (02), a heating system (03) and a vacuum system (01) according to any one of claims 1 to 6; It also includes a loading system (04) for loading materials to be vacuum dried and a fixing system (05) for fixing the loading system (04); The heating system (03) comprises a side wall heating unit (510) arranged on the side wall of a drying chamber (02) of the vacuum drying equipment and a bottom heating unit (520) arranged on the bottom of the drying chamber (02); The fixing system (05) comprises an avoidance unit (610) for protecting the heating system (03) and the vacuum system (01), and a supporting unit (620) for supporting the loading system (04).

8. A vacuum drying device according to claim 7, characterized in that: The side wall heating unit (510) comprises a plurality of groups of side wall heating components (511), and each group of the side wall heating components (511) is evenly distributed along the height direction of the drying chamber (02); The bottom heating unit (520) comprises a bottom heating subunit (521) arranged along the length direction of the drying chamber (02), and an auxiliary heating subunit (522) used to assist the bottom heating subunit (521).

9. A vacuum drying device according to claim 7 or 8, characterized in that: The avoidance unit (610) comprises at least two avoidance members (611); The avoidance member (611) comprises a connection portion (6111) for connecting to the drying chamber (02) and a protection portion (6112) for protecting the vacuum system (01); An avoidance section (6113) is provided between the connecting portion (6111) and the protecting portion (6112).

10. A vacuum drying device according to claim 9, characterized in that: The support unit (620) comprises a support plate (621) and a mounting plate (622) for mounting the support plate (621); The number and position of the support plates (621) correspond to the avoidance members (611).

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