One-way pressure resistance valve suitable for molecular distillation instrument

Abstract

The utility model relates to a one-way pressure resistance valve suitable for a molecular distillation instrument, which comprises a screw which is of a hollow cylindrical structure with an open lower end and a closed upper end, the closed end of the screw is provided with a first through hole, the screw is internally provided with internal threads, and the internal threads of the screw are connected with a nut. A gasket, a spring support and a spring are sequentially arranged in the screw between the nut and the closed end of the screw in the axial direction, the outer diameter of the gasket and the outer diameter of the spring support are smaller than the inner diameter of the screw, a second through hole smaller than the outer diameter of the spring is formed in the nut in the axial direction in a penetrating mode, and the spring support promotes the gasket to seal the first through hole under the elastic force effect of the spring. The one-way pressure resistance valve has the beneficial effects that after the one-way pressure resistance valve is mounted in the port, communicated with the electronic flow pump, in the three-way pipe, the internal and external pressure difference between the interior of the distillation chamber and the external environment can be buffered, so that the stability and the accuracy of automatic sample injection of the electronic flow pump are kept; and the quality of different batches of natural perfume products for cigarettes prepared by the molecular distillation technology is stable and consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of molecular distillation, and particularly relates to a one-way pressure-resistant valve applicable to a molecular distillation apparatus. Background Art

[0002] In the development and preparation technology of natural tobacco flavors, molecular distillation technology plays an important role in the further separation and purification of flavor products. In small-scale molecular distillation equipment, the feeding method of materials is generally manual valve feeding, which will result in inconsistent material flow rates for each feeding and no way to measure. Therefore, an electronic flow pump is added to achieve automatic feeding to improve the molecular distillation apparatus, in order to accurately control the material flow rate. The general structure is as follows: the discharge port of the storage tank is connected to one interface of a three-way pipe, and a manual flow regulating valve is installed on the discharge port of the storage tank. In addition, the remaining two interfaces of the three-way pipe are respectively connected to the feeding port of the molecular distillation chamber and the electronic flow pump. However, when the molecular distillation apparatus is working, there will be a large pressure difference between the inside and the outside environment of the distillation chamber. Under the condition of a large pressure difference, even if the material flow rate is controlled by the electronic flow pump, obvious fluctuations will occur, ultimately resulting in inconsistent quality of different batches of natural tobacco flavors. Therefore, a one-way pressure-resistant valve with a flow direction from the electronic flow pump into the distillation chamber is fixed at the port connected to the electronic flow pump in the three-way pipe, and the existing one-way pressure-resistant valves usually cannot meet the usage requirements. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a one-way pressure-resistant valve applicable to a molecular distillation apparatus to overcome the above-mentioned deficiencies in the prior art.

[0004] The technical solution for the utility model to solve the above technical problem is as follows: A one-way pressure-resistant valve applicable to a molecular distillation apparatus includes: a screw, which is a hollow columnar structure with an open lower end and a closed upper end. A first through hole is opened at the closed end of the screw. The screw has internal threads, and a nut is connected to the internal threads of the screw. Inside the screw, a gasket, a spring holder, and a spring are sequentially arranged along the axial direction between the nut and the closed end of the screw. The outer diameters of the gasket and the spring holder are smaller than the inner diameter of the screw. The nut is axially penetrated with a second through hole smaller than the outer diameter of the spring. The spring holder urges the gasket to seal the first through hole under the elastic force of the spring.

[0005] Based on the above technical solution, the utility model can be further improved as follows.

[0006] Further, the spring holder is in a tripod shape and includes: a cylinder and a plurality of brackets. The plurality of brackets are distributed around the cylinder and fixed to the cylinder. The length of each bracket above the cylinder is shorter than the length below the cylinder. The gasket is inlaid within the interval surrounded by the short ends of the plurality of brackets, and the upper end of the spring is internally connected within the interval surrounded by the long ends of the plurality of brackets.

[0007] Furthermore, the bracket is an arc-shaped plate, the area enclosed by the short ends of multiple brackets is cylindrical, the outer diameter of the gasket is the same as the outer diameter of the cylindrical area enclosed by the short ends of multiple brackets, and the height of the gasket is greater than the height of the cylindrical area enclosed by the short ends of multiple brackets; the area enclosed by the long ends of multiple brackets is cylindrical, and the outer diameter of the spring is the same as the outer diameter of the cylindrical area enclosed by the long ends of multiple brackets.

[0008] Furthermore, the length of the spring in the state without external force is longer than that of the screw.

[0009] Furthermore, the material of the spring holder is SUS304, the material of the spring is SUS304, the material of the gasket is graphene or PVC, and the material of the nut is SUS304.

[0010] Furthermore, the outer diameter of the gasket is twice the inner diameter of the first through hole.

[0011] Furthermore, a receiving hole coaxial with the second through hole is opened at the upper end of the nut, the inner diameter of the receiving hole is larger than the inner diameter of the second through hole, and the lower end of the spring is located in the receiving hole.

[0012] Furthermore, an external hexagonal column is provided at the lower end of the nut.

[0013] Furthermore, an annular groove is provided on the outer peripheral surface of the screw, and an annular sealing ring is provided in the annular groove.

[0014] The beneficial effects of the present utility model are as follows: After installing such a one-way pressure resistance valve in the port communicating with the electronic flow pump in the three-way pipe, the internal and external pressure difference between the inside of the distillation chamber and the external environment can be buffered to maintain the stability and accuracy of the automatic sampling of the electronic flow pump. It acts together with the electronic flow pump to achieve automatic and stable material addition, thereby replacing the manual valve for material addition, carrying out the molecular distillation process technology to prepare tobacco flavorings, achieving the quality stability and consistency of different batches of tobacco natural flavor products prepared by the molecular distillation technology, achieving the purpose of accurate sampling and stable production, and being convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an exploded view of the one-way pressure resistance valve applicable to a molecular distiller in the present utility model;

[0016] Figure 2 is a structural diagram of the one-way pressure resistance valve applicable to a molecular distiller in the present utility model.

[0017] In the drawings, the list of components represented by each reference numeral is as follows:

[0018] 1. Screw, 110. First through hole, 2. Nut, 210. Second through hole, 220. Receiving hole, 230. External hexagonal column, 3. Gasket, 4. Spring holder, 410. Cylinder, 420. Bracket, 5. Spring, 6. Annular sealing ring. Detailed implementation mode

[0019] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples cited are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0020] Embodiment 1

[0021] As Figure 1 、 Figure 2 shown, a one-way pressure-resistant valve applicable to a molecular distillation apparatus includes: a screw 1, the screw 1 is a hollow columnar structure with an open lower end and a closed upper end. A first through hole 110 is opened at the closed end of the screw 1. In addition, the screw 1 has internal threads, and a nut 2 is connected to the internal threads of the screw 1. When the nut 2 is threadedly connected to the screw 1, a cavity will be formed between the nut 2 and the closed end of the screw 1. Inside the screw 1, a gasket 3, a spring holder 4, and a spring 5 are sequentially arranged along the axial direction between the nut 2 and the closed end of the screw 1, that is, the gasket 3, the spring holder 4, and the spring 5 are located in the cavity; the outer diameter of the gasket 3 is smaller than the inner diameter of the screw 1, the outer diameter of the spring holder 4 is smaller than the inner diameter of the screw 1, the nut 2 is axially penetrated with a second through hole 210 smaller than the outer diameter of the spring 5, and the spring holder 4 urges the gasket 3 to seal the first through hole 110 under the elastic force of the spring 5, that is, the inner diameter of the first through hole 110 is smaller than the outer diameter of the gasket 3.

[0022] Embodiment 2

[0023] As Figure 1 、 Figure 2 shown, this embodiment is a further improvement on the basis of Embodiment 1, specifically as follows:

[0024] The spring holder 4 is a tripod-like structure. The spring holder 4 includes: a cylinder 410 and a plurality of brackets 420. The plurality of brackets 420 are distributed around the cylinder 410 and are fixed to the cylinder 410. The number of brackets 420 can be two, three, four, etc. There is a gap between adjacent two brackets 420. The length of each bracket 420 above the cylinder 410 is shorter than the length below the cylinder 410. The gasket 3 is inlaid in the area surrounded by the short ends of the plurality of brackets 420, and the upper end of the spring 5 is internally connected to the area surrounded by the long ends of the plurality of brackets 420. The tripod-like structure of the spring holder 4 can not only inlay and fix the gasket 3 (move together, and when the one-way valve works, the material can flow in), but also serve as a spring seat to fix the spring 5, ensuring the smoothness of the gasket 3, the spring holder 4, and the spring 5 during the movement process.

[0025] Furthermore: The bracket 420 is an arc-shaped plate. The area enclosed by the short ends of multiple brackets 420 is cylindrical. The outer diameter of the gasket 3 is the same as the outer diameter of the cylindrical area enclosed by the short ends of multiple brackets 420. The height of the gasket 3 is greater than the height of the cylindrical area enclosed by the short ends of multiple brackets 420. And the area enclosed by the long ends of multiple brackets 420 is cylindrical, and the outer diameter of the spring 5 is the same as the outer diameter of the cylindrical area enclosed by the long ends of multiple brackets 420.

[0026] In addition, the length of the spring 5 in the state without external force is longer than that of the screw 1.

[0027] Embodiment 3

[0028] As Figure 1 、 Figure 2 shown, this embodiment is a further improvement based on Embodiment 1 or 2, specifically as follows:

[0029] The material of the spring holder 4 is SUS304, the material of the spring 5 is SUS304, the material of the nut 2 is SUS304. The SUS304 material is resistant to acid, alkali, and corrosion, enabling the one-way pressure relief valve to be used for a long time. The material of the gasket 3 should be resistant to acid and alkali corrosion, so graphene or PVC can be selected, etc.

[0030] Embodiment 4

[0031] As Figure 1 、 Figure 2 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 3, specifically as follows:

[0032] The outer diameter of the gasket 3 is twice the inner diameter of the first through hole 110. The upper end of the nut 2 is provided with a receiving hole 220 coaxial with the second through hole 210. The inner diameter of the receiving hole 220 is larger than the inner diameter of the second through hole 210. The lower end of the spring 5 is located in the receiving hole 220.

[0033] Embodiment 5

[0034] As Figure 1 、 Figure 2 shown, this embodiment is a further improvement based on any one of Embodiments 1 to 4, specifically as follows:

[0035] The lower end of the nut 2 is provided with an external hexagonal column 230. The second through hole 210 also penetrates through the external hexagonal column 230, facilitating the rotation of the nut 2 with an internal hexagonal wrench, thereby adjusting the screwing length between the nut 2 and the screw 1, and further adjusting the pressure relief value of the one-way valve.

[0036] Embodiment 6

[0037] As Figure 1 、 Figure 2As shown, this embodiment is a further improvement based on any one of Embodiments 1 to 5, and the specific content is as follows:

[0038] A ring groove is provided on the outer peripheral surface of the screw 1, and an annular sealing ring 6 is provided in the ring groove. When the one-way pressure blocking valve is installed in the tee, the annular sealing ring 6 can achieve the seal between the screw 1 and the inner wall of the tee.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A one-way pressure-blocking valve suitable for a molecular distillation apparatus, characterized in that: include: A screw (1) is a hollow columnar structure with an open lower end and a closed upper end. A first through hole (110) is provided at the closed end of the screw (1). The screw (1) has an internal thread. The internal thread of the screw (1) is connected to a nut (2). A gasket (3), a spring frame (4) and a spring (5) are provided in sequence along the axial direction between the nut (2) and the closed end of the screw (1). The outer diameters of the gasket (3) and the spring frame (4) are smaller than the inner diameter of the screw (1). A second through hole (210) is provided through the nut (2) along the axial direction and is smaller than the outer diameter of the spring (5). The spring frame (4) causes the gasket (3) to seal the first through hole (110) under the elastic force of the spring (5).

2. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 1, characterized in that: The spring frame (4) is a tripod-shaped structure, comprising: a cylinder (410) and a plurality of brackets (420), the plurality of brackets (420) being distributed around the cylinder (410) and fixed to the cylinder (410), the length of each bracket (420) above the cylinder (410) being shorter than the length below the cylinder (410), the gasket (3) being inlaid in the area surrounded by the short ends of the plurality of brackets (420), and the upper end of the spring (5) being inscribed in the area surrounded by the long ends of the plurality of brackets (420).

3. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 2, characterized in that: The bracket (420) is an arc-shaped plate, the section surrounded by the short ends of the multiple brackets (420) is cylindrical, the outer diameter of the gasket (3) is consistent with the outer diameter of the cylindrical section surrounded by the short ends of the multiple brackets (420), and the height of the gasket (3) is greater than the height of the cylindrical section surrounded by the short ends of the multiple brackets (420); the section surrounded by the long ends of the multiple brackets (420) is cylindrical, and the outer diameter of the spring (5) is consistent with the outer diameter of the cylindrical section surrounded by the long ends of the multiple brackets (420).

4. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 1, characterized in that: The length of the spring (5) in a state without external force is longer than that of the screw (1).

5. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 1, characterized in that: The material of the spring frame (4) is SUS304, the material of the spring (5) is SUS304, the material of the gasket (3) is graphene or PVC, and the material of the nut (2) is SUS304.

6. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 1, characterized in that: The outer diameter of the gasket (3) is twice the inner diameter of the first through hole (110).

7. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 1, characterized in that: The upper end of the nut (2) is provided with a receiving hole (220) coaxial with the second through hole (210); the inner diameter of the receiving hole (220) is larger than the inner diameter of the second through hole (210); and the lower end of the spring (5) is located in the receiving hole (220).

8. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 1, characterized in that: An outer hexagonal column (230) is provided at the lower end of the nut (2).

9. A one-way pressure-blocking valve suitable for a molecular distillation apparatus according to claim 1, characterized in that: An annular groove is provided on the outer peripheral surface of the screw (1), and an annular sealing ring (6) is provided in the annular groove.

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