Device for expanding cut stems

Abstract

The utility model relates to the technical field of cut stem expansion, and provides a cut stem expansion device which comprises a first pipeline, a second pipeline and an expansion cavity, the first pipeline and the second pipeline are both communicated with the expansion cavity, the first pipeline is used for injecting steam into the expansion cavity, and the second pipeline is used for injecting steam into the expansion cavity. The second pipeline is used for injecting air into the expansion cavity, and the expansion cavity is used for conducting expansion treatment on the cut stems. According to the device for expanding the cut stems, by arranging the second pipeline, the pressure and the temperature of the steam in the expansion cavity can be adjusted according to the varieties of the cut stems, and then the expansion degree of the cut stems is adjusted, so that the expansion degrees of all the varieties of cut stems can meet the technological requirements, and the unqualified product rate of the cut stems is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shredded stem expansion, in particular to a device for shredded stem expansion. Background Art

[0002] Cut stems are the main component of tobacco. After being heated and humidified, the cut stems enter the expansion chamber for expansion so that the filling rate of the cut stems reaches the process requirements. However, it is found in the actual production process that the filling rate of many cut stems after expansion is greater than the process requirements, which makes these cut stems unusable for tobacco manufacturing. Utility Model Content

[0003] The utility model provides a device for expanding shredded stems, which is used to solve the defect that the filling rate of some shredded stems is too large in the prior art.

[0004] The utility model provides a device for expanding shredded stems, comprising: a first pipeline, a second pipeline and an expansion chamber, wherein the first pipeline and the second pipeline are both connected to the expansion chamber, the first pipeline is used to inject steam into the expansion chamber, the second pipeline is used to inject air into the expansion chamber, and the expansion chamber is used to expand the shredded stems.

[0005] According to the utility model, a device for expanding shredded stems also includes a first control valve, which is arranged on the first pipeline and is used to control the on-off of the first pipeline.

[0006] According to the utility model, a device for expanding shredded stems further comprises a flow meter, wherein the flow meter is arranged in the first pipeline and is used to detect the flow rate of steam.

[0007] According to the utility model, a device for expanding shredded stems also includes a first regulating valve, which is arranged on the second pipeline and is used to adjust the flow rate of air.

[0008] According to the utility model, a device for expanding shredded stems further includes a one-way valve, which is arranged in the second pipeline and located between the first regulating valve and the expansion chamber.

[0009] According to the utility model, a device for expanding shredded stems also includes: a third pipeline, a first end of the third pipeline is connected to the first pipeline; a feed air lock, the feed air lock is connected to the second end of the third pipeline; and a fourth pipeline, the feed air lock is connected to the expansion chamber through the fourth pipeline.

[0010] According to the utility model, a device for expanding shredded stems also includes: a second regulating valve, which is arranged in the third pipeline and is used to adjust the flow rate of steam entering the feed air lock; a second control valve, which is arranged in the first pipeline and is located between the flow meter and the expansion chamber.

[0011] According to the utility model, a device for expanding shredded stems further includes a fifth pipeline, both ends of which are respectively connected to the first pipeline and the feed air lock, and the fifth pipeline is used to preheat the feed air lock.

[0012] According to the utility model, a device for expanding shredded stems further includes a second control valve, which is arranged on the fifth pipeline and is used to control the on-off of the fifth pipeline.

[0013] According to a device for expanding shredded stems provided by the utility model, the expansion chamber comprises: a first chamber and a second chamber, the first chamber is connected to the second chamber, along the ejection direction of the shredded stems, the first chamber is a gradually contracting structure, and the second chamber is a gradually expanding structure.

[0014] The device for expanding shredded stems provided by the utility model can adjust the pressure and temperature of the steam in the expansion chamber according to the variety of the shredded stems by setting the second pipeline, thereby adjusting the expansion degree of the shredded stems, so that the expansion degree of each variety of shredded stems can meet the process requirements, thereby reducing the defective rate of the shredded stems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of a device for expanding shredded stems provided by the utility model;

[0017] Reference numerals:

[0018] 10: first pipeline; 11: first control valve; 12: flow meter; 13: second control valve; 20: expansion chamber; 21: first cavity; 22: second cavity; 30: second pipeline; 31: first regulating valve; 32: one-way valve; 40: third pipeline; 41: second regulating valve; 50: feed air lock; 60: fourth pipeline; 70: fifth pipeline; 71: third control valve. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in 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 creative work are within the scope of protection of the utility model.

[0020] The features of the terms "first" and "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0021] 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" 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Combine the following Figure 1 The utility model is described as a device for expanding shredded stems.

[0024] like Figure 1 As shown, in an embodiment of the utility model, the device for expanding the shredded stems comprises: a first pipeline 10, an expansion chamber 20 and a second pipeline 30. The first pipeline 10 and the second pipeline 30 are both connected to the expansion chamber 20, the first pipeline 10 is used to inject steam into the expansion chamber 20, the second pipeline 30 is used to inject air into the expansion chamber 20, and the expansion chamber 20 is used to expand the shredded stems.

[0025] Specifically, the heated and humidified shredded stems enter the expansion chamber 20, and the expansion chamber 20 is connected to the first pipeline 10. The first pipeline 10 introduces high-temperature steam into the expansion chamber 20, so that the partial pressure of water vapor in the shredded stems increases rapidly. When the shredded stems are ejected from the expansion chamber 20, due to the sudden change in speed and pressure, the water molecules contained in the shredded stems are separated in an instantaneous explosion manner to increase the volume of the shredded stems and achieve a puffing effect. In the actual production process, due to the high temperature and high pressure of the steam in the first pipeline 10, the expansion of the shredded stems will be too large, that is, the filling rate will be too large, which does not meet the process requirements. Based on this, the second pipeline 30 is connected to the expansion chamber 20, and an appropriate amount of air is introduced into the expansion chamber 20 according to the type of shredded stems to reduce the pressure and temperature of the steam, thereby reducing the expansion degree of the shredded stems, so that the filling rate of the shredded stems meets the process requirements.

[0026] The device for expanding shredded stems provided by the embodiment of the utility model can adjust the pressure and temperature of the steam in the expansion chamber according to the variety of the shredded stems by setting a second pipeline, thereby adjusting the expansion degree of the shredded stems, so that the expansion degree of each variety of shredded stems can meet the process requirements, thereby reducing the defective rate of the shredded stems.

[0027] Furthermore, if Figure 1 As shown, in the embodiment of the present utility model, the expansion chamber 20 includes: a first cavity 21 and a second cavity 22, the first cavity 21 is connected to the second cavity 22, and along the ejection direction of the stem shreds, the first cavity 21 is a gradually contracting structure, and the second cavity 22 is a gradually expanding structure.

[0028] Specifically, the heated and humidified shredded stems and steam enter the first cavity 21, and the first cavity 21 is a gradually contracting structure, thereby compressing the volume of the steam and increasing the pressure, causing the water molecules contained in the shredded stems to be ejected from the second cavity 22 in an instantaneous explosion manner, and the second cavity 22 is set to a gradually expanding structure, which reduces the resistance of the shredded stems during flow, and facilitates the ejection of the expanded shredded stems from the expansion cavity 20.

[0029] like Figure 1 As shown, in an embodiment of the utility model, the device for expanding shredded stems further comprises a first control valve 11 , which is disposed in the first pipeline 10 , and is used to control the on-off of the first pipeline 10 .

[0030] Specifically, the first control valve 11 is used to control the on-off of the first pipeline 10. When the shredded stems need to be expanded, the first control valve 11 is opened to allow steam to enter the expansion chamber 20 from the first pipeline 10 to expand the shredded stems.

[0031] Furthermore, if Figure 1As shown, in an embodiment of the present invention, the device for expanding shredded stems further comprises a flow meter 12, which is disposed in the first pipeline 10 and is used to detect the flow rate of steam.

[0032] like Figure 1 As shown, in an embodiment of the present utility model, the device for expanding shredded stems further comprises a first regulating valve 31, which is disposed in the second pipeline 30 and is used to adjust the flow rate of air.

[0033] Specifically, the flow meter 12 is used to detect the flow rate of steam in the first pipeline 10. Different varieties of shredded stems require different steam pressures and temperatures to achieve a degree of expansion that meets process requirements. When the flow rate of steam entering the expansion chamber 20 is large, that is, the temperature and pressure of the steam are large, the opening of the first regulating valve 31 can be adjusted to allow an appropriate amount of air to enter the expansion chamber 20, thereby reducing the pressure and temperature of the steam in the expansion chamber 20, so that the expansion degree of the shredded stems meets process requirements.

[0034] like Figure 1 As shown, in an embodiment of the present invention, the device for expanding shredded stems further comprises a one-way valve 32 , which is disposed in the second pipeline 30 and located between the first regulating valve 31 and the expansion chamber 20 .

[0035] Specifically, the one-way valve 32 has a one-way passage function, which allows gas to enter the expansion chamber 20 through the one-way valve 32, but can prevent the gas from flowing back from the expansion chamber 20, thereby ensuring that there is an appropriate amount of air in the expansion chamber 20.

[0036] like Figure 1 As shown, in an embodiment of the utility model, the device for expanding shredded stems further comprises: a third pipeline 40, a feed air lock 50 and a fourth pipeline 60. Both ends of the third pipeline 40 are respectively connected to the first pipeline 10 and the feed air lock 50, and the feed air lock 50 is connected to the expansion chamber 20 through the fourth pipeline 60.

[0037] Specifically, steam enters the feed air lock 50 through the first pipeline 10 and the third pipeline 40 to heat the humidified shredded stems. The heated and humidified shredded stems and the steam enter the expansion chamber 20 through the fourth pipeline 60. The first pipeline 10 introduces high-temperature steam into the expansion chamber 20. According to the variety of the shredded stems, the opening of the first regulating valve 31 is adjusted, and a proper amount of air is introduced into the expansion chamber 20, so that the expansion degree of the shredded stems in the expansion chamber 20 meets the process requirements.

[0038] Furthermore, if Figure 1 As shown, in an embodiment of the present invention, the device for expanding shredded stems further comprises a second control valve 13 , which is disposed in the first pipeline 10 and located between the flow meter 12 and the expansion chamber 20 .

[0039] Specifically, the second control valve 13 is used to control the on-off of the first pipeline 10. After the first control valve 11 is opened, the second control valve 13 is closed first to prevent steam from entering the expansion chamber 20. The steam enters the feed air lock 50 through the first pipeline 10 and the third pipeline 40 to heat the humidified shredded stems. After the steam and the shredded stems enter the expansion chamber 20 together, the second control valve 13 is opened again to allow the steam to enter the expansion chamber 20 through the first pipeline 10 to promote the expansion of the shredded stems.

[0040] Furthermore, if Figure 1 As shown, in an embodiment of the present invention, the device for expanding shredded stems further comprises a second regulating valve 41 , which is disposed in the third pipeline 40 and is used to regulate the flow of steam entering the feed air lock 50 .

[0041] Specifically, the second regulating valve 41 is used to adjust the flow rate of steam entering the feed air lock 50 to adjust the heating temperature of the shredded stems.

[0042] like Figure 1 As shown, in an embodiment of the present invention, the device for expanding shredded stems further includes a fifth pipeline 70 , both ends of which are respectively connected to the first pipeline 10 and the feed air lock 50 , and the fifth pipeline 70 is used to preheat the feed air lock 50 .

[0043] Specifically, before heating the shredded stems, the first control valve 11 may be opened, and the second control valve 13 and the second regulating valve 41 may be closed, so that steam enters the feed air lock 50 from the fifth pipeline 70 to preheat the feed air lock 50 .

[0044] Furthermore, the device for expanding shredded stems further comprises a third control valve 71 , which is disposed on the fifth pipeline 70 , and is used to control the on-off of the fifth pipeline 70 .

[0045] Specifically, before heating the shredded stems, the first control valve 11 may be opened, and the second control valve 13 and the second regulating valve 41 may be closed, so that steam enters the feed air lock 50 from the fifth pipeline 70 to preheat the feed air lock 50 .

[0046] After preheating the feed air lock 50, the third control valve 71 is closed and the second regulating valve 41 is opened, so that steam enters the feed air lock 50 from the first pipeline 10 and the third pipeline 40 to heat the cut stems, and the heated cut stems and steam enter the expansion chamber 20 from the fourth pipeline 60. At this time, the second control valve 13 is opened to allow steam to enter the expansion chamber 20 from the first pipeline 10. At the same time, the valve core opening of the first regulating valve 31 is adjusted according to the type of cut stems, so that a proper amount of air enters the expansion chamber 20 from the second pipeline 30, so that the cut stems in the expansion chamber 20 are expanded and then ejected.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A device for expanding shredded stems, characterized in that: include: A first pipeline, a second pipeline and an expansion chamber, wherein the first pipeline and the second pipeline are both connected to the expansion chamber, the first pipeline is used to inject steam into the expansion chamber, the second pipeline is used to inject air into the expansion chamber, and the expansion chamber is used to expand the shredded stems.

2. The device for expanding shredded stems according to claim 1, characterized in that: It also includes a first control valve, which is arranged on the first pipeline and is used to control the on-off of the first pipeline.

3. The device for expanding shredded stems according to claim 1, characterized in that: It also includes a flow meter, which is arranged on the first pipeline and is used to detect the flow of steam.

4. The device for expanding shredded stems according to claim 1, characterized in that: It also includes a first regulating valve, which is arranged on the second pipeline and is used to adjust the flow rate of air.

5. The device for expanding shredded stems according to claim 4, characterized in that: It also includes a one-way valve, which is arranged in the second pipeline and located between the first regulating valve and the expansion chamber.

6. The device for expanding shredded stems according to claim 3, characterized in that: Also includes: a third pipeline, a first end of the third pipeline being in communication with the first pipeline; a feed air lock, the feed air lock being in communication with the second end of the third pipeline; A fourth pipeline, the feed air lock is connected to the expansion chamber through the fourth pipeline.

7. The device for expanding shredded stems according to claim 6, characterized in that: Also includes: a second regulating valve, the second regulating valve being arranged in the third pipeline, and the second regulating valve being used for regulating the flow rate of steam entering the feed air lock; A second control valve is provided in the first pipeline, and the second control valve is located between the flow meter and the expansion chamber.

8. The device for expanding shredded stems according to claim 6, characterized in that: It also includes a fifth pipeline, both ends of which are connected to the first pipeline and the feed air lock respectively, and the fifth pipeline is used to preheat the feed air lock.

9. The device for expanding shredded stems according to claim 8, characterized in that: It also includes a second control valve, which is arranged on the fifth pipeline and is used to control the on-off of the fifth pipeline.

10. The device for expanding shredded stems according to claim 1, characterized in that: The expansion cavity comprises: a first cavity and a second cavity, wherein the first cavity is connected to the second cavity, and along the ejection direction of the shredded stems, the first cavity is in a gradually contracting structure, and the second cavity is in a gradually expanding structure.

Images