Roots screw vacuum unit special for food vacuum packaging and provided with cooling device

Abstract

The utility model discloses a special Roots screw vacuum unit with a cooling device for food vacuum packaging, which comprises a support frame, a screw vacuum pump is fixedly arranged at the upper end of the support frame, a connecting sleeve is fixedly arranged at one end of the screw vacuum pump, a Roots vacuum pump is arranged above the connecting sleeve, and the Roots vacuum pump is connected with the cooling device. A sealing assembly is arranged between the connecting sleeve and the roots vacuum pump, a circulating assembly is arranged at the position, located on the rear side of the screw vacuum pump, above the supporting frame and comprises a circulating pump, a supporting plate is fixedly installed on the circulating pump, the supporting plate is fixedly arranged at the upper end of the supporting frame, and a liquid storage box is arranged above the supporting plate; communicating pipes are arranged in the screw vacuum pump and the Roots vacuum pump, a liquid inlet is formed in the upper end of the liquid storage tank, two liquid outlet pipes are connected to the upper end of the circulating pump, and cooling of the interior of the Roots vacuum pump and the interior of the screw vacuum pump and relative sealing of pipeline connection of the Roots screw vacuum unit can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of food vacuum packaging technology, and in particular to a Roots screw vacuum unit for food vacuum packaging with a cooling device. Background Technology

[0002] In the food industry, vacuum packaging technology is widely used to extend the shelf life of food and maintain its flavor and quality. Roots screw vacuum units with cooling devices play a crucial role in this field, providing an efficient and stable vacuum environment for food vacuum packaging.

[0003] Existing Roots screw vacuum units have some shortcomings in food packaging processing. When Roots vacuum pumps and screw vacuum pumps are working, the gas is compressed and heat is generated. If heat is not dissipated in time, the pump body temperature will become too high, affecting the pump's performance and service life, and causing pump damage. This will affect the efficiency of food vacuum packaging. To address these issues, a Roots screw vacuum unit specifically for food vacuum packaging has been proposed for improvement and upgrading. Utility Model Content

[0004] The purpose of this invention is to provide a Roots screw vacuum unit for food vacuum packaging with a cooling device, in order to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] Design a rooted screw vacuum unit for food vacuum packaging with a cooling device, including a support frame. A screw vacuum pump is fixedly mounted on the upper end of the support frame. A connecting sleeve is fixedly mounted on one end of the screw vacuum pump. A rooted vacuum pump is mounted above the connecting sleeve. A sealing assembly is provided between the connecting sleeve and the rooted vacuum pump. A circulation assembly is located above the support frame and behind the screw vacuum pump. The circulation assembly includes a circulation pump. The circulation pump is fixedly mounted on a support plate, which is fixedly mounted on the upper end of the support frame. A liquid storage tank is located above the support plate. Both the screw vacuum pump and the rooted vacuum pump have connecting pipes inside.

[0007] Furthermore, the upper end of the storage tank is provided with an inlet, and the upper end of the circulation pump is connected to two outlet pipes, which are respectively connected to the inside of the screw vacuum pump and the Roots vacuum pump.

[0008] Furthermore, each of the two outlet pipes is connected to a connecting pipe at one end. One end of the connecting pipe passes through the outer wall of the pump body and is provided with a return pipe. One end of the return pipe is connected to the inside of the storage tank. The internal connecting pipe of the Roots vacuum pump has the same shape as the internal connecting pipe of the screw vacuum pump.

[0009] Furthermore, the sealing assembly includes a first connecting pipe and a second connecting pipe. The first connecting pipe is fixedly installed at the bottom of the Roots vacuum pump, and the second connecting pipe is fixedly installed inside the connecting sleeve. The outer walls of the first connecting pipe and the second connecting pipe are threadedly connected to a threaded sleeve.

[0010] Furthermore, a limiting groove is formed inside one end of the second connecting pipe, a sealing ring is fixedly installed inside the limiting groove, and a rubber pad is attached to the top of the sealing ring. The sealing ring and the rubber pad are adapted to the size of the limiting groove.

[0011] Furthermore, one end of the first connecting pipe is fixedly connected to an upper cover plate, and a snap-fit ​​ring is fixedly provided at the bottom of the upper cover plate, the snap-fit ​​ring being snapped into the limiting groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The device of this utility model is equipped with components such as a liquid storage tank, a circulating pump, a liquid outlet pipe, a return pipe, and a connecting pipe, which is conducive to cooling the internal heat of the screw vacuum pump and the Roots vacuum pump, ensuring stable performance of the unit during long-term continuous operation. The stable operating temperature not only extends the service life of the pump, but also ensures the consistency of the pumping effect, avoids unstable vacuum due to temperature fluctuations, which affects the quality of food packaging, and improves the processing efficiency of food packaging.

[0014] 2. The device of this utility model is equipped with components such as a first connecting pipe, a snap ring, a second connecting pipe, a rubber gasket, and a sealing ring, which helps to effectively prevent gas leakage when the screw vacuum pump and the Roots vacuum pump are used for food vacuum packaging, so as to achieve a high degree of vacuum for food packaging and improve the stability of the screw vacuum pump and the Roots vacuum pump.

[0015] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the Roots screw vacuum unit for food vacuum packaging with a cooling device according to this utility model;

[0018] Figure 2This is a side view of the Roots screw vacuum unit with cooling device for food vacuum packaging according to this utility model.

[0019] Figure 3 for Figure 2 A magnified schematic diagram of the local structure;

[0020] Figure 4 for Figure 2 A magnified diagram of the partially disassembled structure.

[0021] In the diagram: 1. Support frame; 2. Screw vacuum pump; 3. Roots vacuum pump; 4. Connecting sleeve; 5. Sealing assembly; 51. First connecting pipe; 52. Second connecting pipe; 53. Threaded sleeve; 54. Top cover plate; 55. Limiting groove; 56. Rubber gasket; 57. Sealing ring; 58. Snap-fit ​​ring; 6. Circulation assembly; 61. Liquid storage tank; 62. Circulation pump; 63. Discharge pipe; 64. Connecting pipe; 65. Return pipe; 66. Support plate. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figure 1 - Figure 4 As shown, the food vacuum packaging Roots screw vacuum unit with a cooling device provided in this embodiment includes a support frame 1. A screw vacuum pump 2 is fixedly installed on the upper end of the support frame 1. A connecting sleeve 4 is fixedly installed on one end of the screw vacuum pump 2. A Roots vacuum pump 3 is installed above the connecting sleeve 4. A sealing assembly 5 is provided between the connecting sleeve 4 and the Roots vacuum pump 3. A circulation assembly 6 is provided above the support frame 1 and behind the screw vacuum pump 2. The circulation assembly 6 includes a circulation pump 62. A support plate 66 is fixedly installed on the circulation pump 62 and the support plate 66 is fixedly installed on the upper end of the support frame 1. A liquid storage tank 61 is provided above the support plate 66. A connecting pipe 64 is provided inside both the screw vacuum pump 2 and the Roots vacuum pump 3.

[0024] Better, such as Figures 2 to 3 As shown, the upper end of the storage tank 61 has an inlet, and the upper end of the circulating pump 62 is connected to two outlet pipes 63. The two outlet pipes 63 are respectively connected to the inside of the screw vacuum pump 2 and the Roots vacuum pump 3. One end of each outlet pipe 63 is connected to a connecting pipe 64. One end of the connecting pipe 64 passes through the outer wall of the pump body and is provided with a return pipe 65. One end of the return pipe 65 is connected to the inside of the storage tank 61. The connecting pipe 64 inside the Roots vacuum pump 3 has the same shape as the connecting pipe 64 inside the screw vacuum pump 2.

[0025] The circulating pump 62 on the outer wall of the drive support plate 66 operates, drawing coolant from the storage tank 61 through two outlet pipes 63. The coolant is then distributed to various locations on the two pump bodies through two connecting pipes 64, and finally flows back into the storage tank 61 through two return pipes 65. The coolant circulates within the pump body, carrying away heat. The connecting pipes 64 facilitate the flow of coolant to the locations on each pump body requiring cooling. The Roots vacuum pump 3 and the screw vacuum pump 2 are made of high-strength cast iron and steel, possessing excellent sealing and mechanical strength. The combination of the Roots vacuum pump 3 and the screw vacuum pump 2 fully leverages their advantages, achieving high pumping speeds over a wide pressure range. This allows for rapid extraction of air from the food packaging cavity, improving packaging efficiency and meeting the needs of large-scale food production enterprises.

[0026] Better, such as Figure 4 As shown, the sealing assembly 5 includes a first connecting pipe 51 and a second connecting pipe 52. The first connecting pipe 51 is fixedly installed at the bottom of the Roots vacuum pump 3, and the second connecting pipe 52 is fixedly installed inside the connecting sleeve 4. The outer walls of the first connecting pipe 51 and the second connecting pipe 52 are threadedly connected to a threaded sleeve 53. A limiting groove 55 is opened inside one end of the second connecting pipe 52. A sealing ring 57 is fixedly installed inside the limiting groove 55. A rubber gasket 56 is attached to the top of the sealing ring 57. The sealing ring 57 and the rubber gasket 56 are adapted to the size of the limiting groove 55. A top cover plate 54 is fixedly connected to one end of the first connecting pipe 51. A snap ring 58 is fixedly provided at the bottom of the top cover plate 54. The snap ring 58 snaps into the limiting groove 55.

[0027] By connecting the first connecting pipe 51 on the Roots vacuum pump 3 to the second connecting pipe 52 on the connecting sleeve 4, the snap ring 58 on the bottom cover plate 54 of the first connecting pipe 51 is pressed into the upper limit groove 55 of the second connecting pipe 52, which facilitates the interlocking of the two connecting pipes. The snap ring 58 is pressed against the rubber gasket 56 and the sealing ring 57 to seal each other. Finally, the threaded sleeve 53 is rotated on the second connecting pipe 52 to limit and fix the upper cover plate 54, which facilitates the relatively sealed connection at the interface of the screw vacuum pump 2 and the Roots vacuum pump 3 and prevents gas leakage. The connecting pipe is usually made of stainless steel, which has good corrosion resistance and sealing performance. By setting materials such as rubber gasket 56 and sealing ring 57, the connection between the two connecting pipes has good elasticity and sealing performance.

[0028] The working principle and process of this utility model are as follows: When the Roots vacuum pump 3 and the screw vacuum pump 2 are working, the compressed gas generates a large amount of heat. At this time, an external power supply is connected, and the operator drives the circulation pump 62 on the outer wall of the support plate 66 to operate. This pump draws the coolant from the storage tank 61 out through the two outlet pipes 63, then distributes the coolant to various locations in the two pump bodies through the two connecting pipes 64, and finally returns it to the storage tank 61 through the two return pipes 65. The coolant circulates within the pump body, carrying away heat. This process is repeated using the circulation pump 62, facilitating rapid cooling of the screw vacuum pump 2 and the Roots vacuum pump 3, thus extending their service life. When vacuum packaging food, the vacuum unit often needs to be connected via connecting pipes. By connecting the first connecting pipe 51 on the Roots vacuum pump 3 to the second connecting pipe 52 on the connecting sleeve 4, the snap ring 58 on the bottom cover plate 54 of the first connecting pipe 51 is pressed into the upper limit groove 55 of the second connecting pipe 52, which facilitates the interlocking of the two connecting pipes. The snap ring 58 is pressed against the rubber gasket 56 and the sealing ring 57 to seal. Finally, the threaded sleeve 53 is rotated on the second connecting pipe 52 to limit and fix the upper cover plate 54, which facilitates the relatively sealed connection at the interface of the screw vacuum pump 2 and the Roots vacuum pump 3, prevents gas leakage, and improves the stability of food vacuum packaging.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A Roots screw vacuum unit for food vacuum packaging with cooling device, characterized in that, The system includes a support frame (1), on which a screw vacuum pump (2) is fixedly mounted. A connecting sleeve (4) is fixedly mounted on one end of the screw vacuum pump (2). A Roots vacuum pump (3) is mounted above the connecting sleeve (4). A sealing assembly (5) is provided between the connecting sleeve (4) and the Roots vacuum pump (3). A circulation assembly (6) is provided above the support frame (1) on the rear side of the screw vacuum pump (2). The circulation assembly (6) includes a circulation pump (62). A support plate (66) is fixedly mounted on the circulation pump (62), and the support plate (66) is fixedly mounted on the upper end of the support frame (1). A liquid storage tank (61) is provided above the support plate (66). A connecting pipe (64) is provided inside both the screw vacuum pump (2) and the Roots vacuum pump (3).

2. The Roots screw vacuum unit with cooling device for food vacuum packaging according to claim 1, characterized in that, The liquid storage tank (61) has an inlet at the top, and the circulation pump (62) is connected to two outlet pipes (63) at the top. The two outlet pipes (63) are respectively connected to the screw vacuum pump (2) and the Roots vacuum pump (3).

3. The Roots screw vacuum unit with cooling device for food vacuum packaging according to claim 2, characterized in that, Both of the two outlet pipes (63) are connected to a connecting pipe (64) at one end. One end of the connecting pipe (64) passes through the outer wall of the pump body and is provided with a return pipe (65). One end of the return pipe (65) is connected to the inside of the storage tank (61). The internal connecting pipe (64) of the Roots vacuum pump (3) has the same shape as the internal connecting pipe (64) of the screw vacuum pump (2).

4. The Roots screw vacuum unit with cooling device for food vacuum packaging according to claim 1, characterized in that, The sealing assembly (5) includes a first connecting pipe (51) and a second connecting pipe (52). The first connecting pipe (51) is fixedly installed at the bottom of the Roots vacuum pump (3), and the second connecting pipe (52) is fixedly installed inside the connecting sleeve (4). The outer walls of the first connecting pipe (51) and the second connecting pipe (52) are threadedly connected to a threaded sleeve (53).

5. The Roots screw vacuum unit with cooling device for food vacuum packaging according to claim 4, characterized in that, The second connecting pipe (52) has a limiting groove (55) inside one end. A sealing ring (57) is fixedly installed inside the limiting groove (55). A rubber pad (56) is attached to the top of the sealing ring (57). The sealing ring (57) and the rubber pad (56) are adapted to the size of the limiting groove (55).

6. The Roots screw vacuum unit with cooling device for food vacuum packaging according to claim 5, characterized in that, One end of the first connecting pipe (51) is fixedly connected to an upper cover plate (54), and a snap ring (58) is fixedly provided at the bottom of the upper cover plate (54), which is snapped into the inside of the limiting groove (55).

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