A vacuum device for freeze drying

Abstract

The utility model discloses a vacuum equipment for freeze drying, characterized in that it comprises: a sealing cover plate, a vacuum pump, a hanging beam truss, a connecting rod locking frame, a grille tray mechanism, and a sealed horizontal tank body; the grille tray mechanism is installed inside the sealed horizontal tank body, the grille tray mechanism and the sealed horizontal tank body are inserted together, and the sealing cover plate is mechanically connected to the sealed horizontal tank body through a hinge shaft. The utility model forms a pressure-through hole at the tray end and an active gap between the channel through holes through the provision of a through-hole guide plate of the grille tray mechanism and a composite grille interlaced frame plate, and the upper and lower ventilation and slow-release internal low-temperature air pressure difference effect is achieved through the active gap between the through-holes of the tray end and the through-holes of the channel, so that the subsequent internal environment of the sealed horizontal tank forms a saturated low-temperature vacuum storage air pressure quantity homogenization operation effect, thereby improving the uniform quality and product qualification rate of the overall freeze-dried product, stabilizing the stratosphere of the horizontal frame plate and the tray panel to reduce turbulence, and the balance cycle of the internal static airflow pressure difference is efficient.

Description

Technical Field

[0001] The utility model relates to vacuum equipment for freeze drying, belonging to the technical field of freeze drying. Background Art

[0002] Vacuum freeze drying machine is suitable for drying high-grade raw materials, Chinese herbal medicines, biological materials, wild vegetables, dehydrated vegetables, food, fruit, chemical industry, pharmaceutical intermediates and other materials. Freeze vacuum drying is a vacuum freeze drying machine that combines refrigeration system, vacuum system, thermal oil heating system and dehumidification system into one, such as freeze drying operation in box structure, which makes the best use of the space for storing materials in the box for freeze vacuum drying.

[0003] The vacuum static equipment used in the freeze-drying technology operation in the prior art has no airflow increment, but has a low-temperature air pressure difference, which causes the stratosphere of each tray sealed by the inner tank to produce high and low air pressure difference density turbulence under a vacuum environment, which can easily cause uneven quality of freeze-dried food materials on the trays with the highest and lowest high pressure differences. Moreover, under the pressure of the vacuum density, the high pressure difference compresses and consumes the freeze-dried food materials, causing obvious cracks on the surface, resulting in a lower qualified rate of freeze-dried products. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a vacuum equipment for freeze-drying, so as to solve the problem that the vacuum static equipment operated by the prior art freeze-drying technology has no airflow increment but has a low-temperature air pressure difference, so that the stratosphere of each tray sealed by the inner tank produces high and low air pressure difference density turbulence under a vacuum environment, which easily causes uneven quality of freeze-dried food materials on the trays with the highest and lowest high pressure differences, and under the pressure of the vacuum density, the high pressure difference compresses and consumes the freeze-dried food materials, causing obvious cracks on the surface, resulting in a reduced qualified rate of freeze-dried products.

[0005] In order to achieve the above object, the utility model is realized by the following technical scheme: a vacuum device for freeze drying, comprising: a sealing cover plate, a vacuum pump, a hanging beam truss, a connecting rod locking frame, a grid tray mechanism, and a sealed horizontal tank body;

[0006] The grille tray mechanism is installed inside the sealed horizontal tank body, the grille tray mechanism and the sealed horizontal tank body are inserted together, the sealing cover plate is mechanically connected to the sealed horizontal tank body through a hinge shaft, the sealing cover plate is installed on the right side of the sealed horizontal tank body, the vacuum pump is inserted in the upper right corner of the sealed horizontal tank body and is mutually connected, the hanging beam truss is installed under the top surface of the sealed horizontal tank body, the hanging beam truss is mechanically connected to the grille tray mechanism through a connecting rod locking frame, and the connecting rod locking frame is installed on the top of the grille tray mechanism;

[0007] The grille tray mechanism is provided with a column plate, a through-hole guide plate, a ventilation tray plate, and a side frame bar; the through-hole guide plates are provided with more than two and are respectively inserted in the left and right sides of the column plate, the ventilation tray plates are provided with more than two vertically arranged side by side in a vertical plane and are all inserted in one side of the side frame bar, the side frame bars are provided with two and are respectively installed on the left and right sides of the column plate, the through-hole guide plates and the ventilation tray plates are interspersed with each other and vertically arranged side by side in a vertical plane, and the column plate is installed inside the sealed horizontal tank body.

[0008] As a further improvement, the through-hole guide plate is composed of a guide wing plate, a pressure hole, and a cross frame plate. There are more than two pressure holes and they are all inserted into the interior of the cross frame plate. There are more than two guide wing plates and they are installed on the front side of the cross frame plate.

[0009] As a further improvement, the ventilation pallet plate is composed of rib grooves, through holes, and a pallet panel. There are more than two through holes and they are all inserted into the interior of the pallet panel. There are four rib grooves that are vertically arranged in a plane and are all installed in the interior of the pallet panel. The rib grooves and the pallet panel are on the same vertical plane.

[0010] As a further improvement, the guide wing is an isosceles trapezoidal flat strip-shaped guide wing structure with a 45-degree inclination angle of the wing surface, so that multiple plate surfaces are distributed to form a three-sided guide operation effect on the front and left and right sides, so that the rear without the guide wing 521 opening can achieve the stratospheric guide and stabilization flow operation effect.

[0011] As a further improvement, the through hole is a composite through hole structure that is wide at the top and bottom and narrow in the middle to form a thin flow channel, which facilitates the distribution of multiple through holes in an upper and lower stacked gap matrix to form a balance of high and low temperature pressure differences and improve the internal environment decompression operation effect.

[0012] The beneficial effects of the utility model are:

[0013] The utility model sets a grille tray mechanism, allows the through-hole guide plate and the ventilation tray plate composite grille to intersperse the frame plate operation, forming an upper and lower ventilation and slow-release internal low-temperature air pressure difference effect in the pressure-passing hole at the tray end and the movable gap in the through hole, so that a saturated low-temperature vacuum storage air pressure homogeneous environment can be achieved in the subsequent sealed horizontal tank body, thereby improving the uniform quality and product qualification rate of the overall freeze-dried products, stabilizing the stratosphere of the horizontal frame plate and the tray panel to reduce turbulence, and the balance cycle of the internal static air flow pressure difference is efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The utility model is a three-dimensional structural schematic diagram of a vacuum device for freeze drying.

[0016] Figure 2 The utility model is a schematic diagram of a cross-sectional structure of a grid tray mechanism of a vacuum device for freeze drying.

[0017] Figure 3 The utility model is a schematic diagram of a top view cross-sectional structure of a through-hole guide plate of a vacuum device for freeze-drying.

[0018] Figure 4 The utility model is a schematic diagram of a cross-sectional structure of a ventilation tray plate of a vacuum device for freeze drying. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0020] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot 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.

[0021] In the vacuum static equipment operated by the existing freeze-drying technology, there is no air flow increment, but there is a low-temperature air pressure difference, which causes the stratosphere of each tray sealed by the inner tank to produce high and low air pressure difference density turbulence under the vacuum environment, that is, it is easy to cause the quality of the freeze-dried food materials in the trays with the highest and lowest high pressure differences to be uneven, and under the pressure of the vacuum density, the high pressure difference compresses and consumes the surface cracks of the freeze-dried food materials, resulting in a decrease in the qualified rate of the freeze-dried products. Therefore, in order to solve the above technical problems, the utility model discloses the following technical solutions:

[0022] Since conventional sealing means that the freeze-dried products are piled up in a disorderly manner in the tank and it is inconvenient to take out the freeze-dried products, it is easy to cause the hidden danger of damaging the freeze-dried products by repeated searching, so the hanging beam truss 3 is used to horizontally hang the traction connecting rod locking frame 4, and the horizontal axis rod 41 is manually shaken to adjust the support rod 42 to lift the grid tray mechanism 5 for storage.

[0023] Reference Figure 1 As shown, a vacuum equipment for freeze-drying comprises: a sealing cover plate 1, a vacuum pump 2, a hanging beam truss 3, a connecting rod locking frame 4, a grille tray mechanism 5, and a sealed horizontal tank body 6; the grille tray mechanism 5 is installed inside the sealed horizontal tank body 6, the grille tray mechanism 5 and the sealed horizontal tank body 6 are inserted together, the sealing cover plate 1 is mechanically connected to the sealed horizontal tank body 6 through a hinge shaft, the sealing cover plate 1 is installed on the right side of the sealed horizontal tank body 6, the vacuum pump 2 is inserted in the upper right corner of the sealed horizontal tank body 6 and is interconnected, the hanging beam truss 3 is installed under the top surface inside the sealed horizontal tank body 6, the hanging beam truss 3 is mechanically connected to the grille tray mechanism 5 through the connecting rod locking frame 4, and the connecting rod locking frame 4 is installed on the top of the grille tray mechanism 5.

[0024] Among them, the use of the hanging beam truss 3 to horizontally hang the traction connecting rod locking frame 4 and manually swing the horizontal axis rod 41 to adjust the support rod 42 to lift the grid tray mechanism 5 for storage is convenient for intuitively identifying the freeze-dried products between different compartments, and the drawer-type design can directly pull out the ventilation tray plate 53 to take and place the internal materials, and avoid the high and low temperature of the stacking material compressing the material quality, thereby improving the orderliness of screening and classification and the convenience of vacuum storage and retrieval of products.

[0025] The storage of conventional freeze-drying trays may easily cause a significant difference in vacuum pressure due to the low-temperature pressure difference between the high and low-temperature plates, resulting in a more unbalanced load-bearing pressure on the bracket than the conventional atmospheric pressure, which affects the safety quality of the support of the column plate 51 when the internal pressure increases.

[0026] Reference Figure 2As shown, the grille tray mechanism 5 is provided with a column plate 51, a through-hole guide plate 52, a ventilation tray plate 53, and a side frame bar 54; the through-hole guide plates 52 are provided in a group of two, and a total of multiple groups are provided, wherein the two through-hole guide plates 52 in the same group are respectively inserted and fixed on the left and right sides of the column plate 51, the ventilation tray plates 53 are provided with more than two vertically arranged side by side in a vertical plane and are all inserted and embedded in one side of the side frame bar 54, the side frame bar 54 is provided with two and is respectively installed on the left and right sides of the column plate 51, the through-hole guide plates 52 and the ventilation tray plates 53 are interspersed with each other and vertically arranged side by side on a vertical plane, and the column plate 51 is vertically installed in the interior of the sealed horizontal tank body 6 by insertion.

[0027] Among them, the column plate 51 and the side frame bar 54 are used to surround the support frame in a two-way alignment, so that the through-hole guide plate 52 and the ventilation tray plate 53 can improve the upper and lower ventilation while allowing the vacuum pressure in the tank to be released through the through holes to reduce the pressure and stabilize the support safety factor, thereby reducing the pressure value of the vacuum pressure corresponding to the low-temperature pressure difference, and making the side frame bar 54 symmetrically assist in protecting the column plate 51, thereby improving the stability of the pressure balance inside the low-temperature tank.

[0028] Due to the stratospheric pressure difference interference of the freeze-drying tray, the airflow is turbulent, resulting in uneven vacuum freeze-drying and large differences in product quality at the same level.

[0029] Reference Figure 3 As shown, the through-hole guide plate 52 is composed of a guide wing 521, a pressure hole 522, and a cross frame plate 523. There are more than two pressure holes 522 and they are all inserted into the interior of the cross frame plate 523. There are more than two guide wing plates 521 and they are installed on the front side of the cross frame plate 523 by welding. The guide wing plate 521 is an isosceles trapezoidal flat strip-shaped guide plate structure with an elevation angle of forty-five degrees, which facilitates the distribution of multiple plate surfaces to form a three-sided guide operation effect on the front and left and right sides, so that the rear side without the guide wing plate 521 opening can achieve the stratospheric guide and flow stabilization operation effect.

[0030] Among them, the combination of the guide wing 521 and the pressure-passing hole 522 is used, so that the guide wing 521 is lifted upward to conduct the airflow through the pressure-passing hole 522 to form a three-sided diversion operation effect on the front and left and right sides, so that the opening of the unarranged guide wing 521 at the rear can release the air flow direction to obtain an air-lifting and sedimentation operation, forming a horizontal circulation care layer to reduce the hierarchical low-temperature pressure difference, and achieve an operating effect of balancing the horizontal stratospheric pressure stabilization and the longitudinal low-pressure difference to reduce losses.

[0031] Since the stratospheric pressure difference of the auxiliary tray also interferes and causes airflow turbulence, the degree of vacuum freeze-drying is uneven and the quality of products at the same level varies greatly.

[0032] Reference Figure 4As shown, the ventilation tray plate 53 is composed of a rib groove 531, a through hole 532, and a tray panel 533. The through hole 532 is provided with more than two and all are embedded in the interior of the tray panel 533. The rib groove 531 is provided with four vertically arranged side by side on a plane and all are installed in the interior of the tray panel 533. The rib groove 531 and the tray panel 533 are on the same vertical plane. The through hole 532 is a composite through hole structure that is wide at the top and bottom and narrow in the middle and is a concave arc in the form of a thin flow channel, which facilitates the distribution of multiple through holes in an upper and lower stacked gap matrix, thereby forming a balance of high and low temperature pressure differences and improving the internal environment decompression operation effect.

[0033] Among them, the rib groove 531 and the through hole 532 are used to form a reinforced rib frame to stabilize the wind pressure and the through hole settles the air pressure, which improves the overall level and forms a horizontal circulation care layer to reduce the hierarchical low-temperature pressure difference, achieving an operational effect of balancing the horizontal stratospheric pressure stabilization and the longitudinal low-pressure difference to reduce losses.

[0034] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vacuum device for freeze drying, characterized in that: include: Sealing cover plate (1), vacuum pump (2), hanging beam truss (3), connecting rod lock frame (4), grid tray mechanism (5), sealed horizontal tank body (6); The grille tray mechanism (5) is installed inside the sealed horizontal tank body (6), the grille tray mechanism (5) and the sealed horizontal tank body (6) are inserted together, the sealed cover plate (1) is mechanically connected to the sealed horizontal tank body (6) through a hinge shaft, the sealed cover plate (1) is installed on the right side of the sealed horizontal tank body (6), the vacuum pump (2) is inserted in the upper right corner of the sealed horizontal tank body (6), the hanging beam truss (3) is installed under the top surface inside the sealed horizontal tank body (6), the hanging beam truss (3) is mechanically connected to the grille tray mechanism (5) through a connecting rod locking frame (4), and the connecting rod locking frame (4) is installed on the top of the grille tray mechanism (5); The grille tray mechanism (5) is provided with a column plate (51), a through-hole flow guide plate (52), a ventilation tray plate (53), and side frame bars (54); The through-hole guide plates (52) are provided with more than two and are respectively inserted into the left and right sides of the column plate (51); the ventilation tray plates (53) are provided with more than two and are vertically arranged side by side to form a vertical plane and are both inserted into one side of the side frame bar (54); the side frame bar (54) is provided with two and is respectively installed on the left and right sides of the column plate (51); the through-hole guide plates (52) and the ventilation tray plates (53) are interlaced and vertically arranged side by side on a vertical plane; the column plate (51) is installed inside the sealed horizontal tank body (6).

2. A vacuum device for freeze drying according to claim 1, characterized in that: The through-hole flow guide plate (52) is composed of a flow guide wing plate (521), a pressure-through hole (522), and a cross frame plate (523); the pressure-through holes (522) are provided with more than two and are all inserted into the interior of the cross frame plate (523); the flow guide wing plates (521) are provided with more than two and are installed on the front side of the cross frame plate (523).

3. A vacuum device for freeze drying according to claim 1, characterized in that: The ventilation tray plate (53) is composed of a rib groove (531), a through hole (532), and a tray panel (533); the through holes (532) are provided with more than two and are all inserted into the interior of the tray panel (533); the rib groove (531) is provided with four vertically arranged in parallel on a plane and are all installed inside the tray panel (533).

4. A vacuum device for freeze drying according to claim 2, characterized in that: The guide wing plate (521) is an isosceles trapezoidal flat strip-shaped guide wing structure with a wing surface elevation angle of 45 degrees.

5. A vacuum device for freeze drying according to claim 3, characterized in that: The through hole (532) is a composite through hole structure that is wide at the top and bottom and narrow in the middle and has a concave arc to form a thin flow channel.

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