Continuous distillation receiving device

Abstract

The utility model discloses a continuous distillation receiving device, which belongs to the technical field of distillation and comprises a tail connecting pipe and a distillation pipe connected to the inlet end of the tail connecting pipe. Two branch pipes which are arranged at intervals in the circumferential direction are arranged on the side wall of the distillation pipe, and receiving bottles are connected to the outlet ends of the branch pipes and the outlet end of the tail connecting pipe; three-way cocks and pressure relief holes are arranged on the side walls of the branch pipe and the tail connecting pipe; the three-way cock comprises a first state and a second state which are mutually switched, when the three-way cock is in the first state, all the receiving bottles are communicated with the corresponding branch pipes or the tail connecting pipes respectively, and when the three-way cock is in the second state, all the receiving bottles are communicated with the corresponding pressure relief holes respectively. According to the utility model, the pressure relief operation of the receiving bottle can be realized under the condition that the vacuum pressure and the medium are not lost, so that the replacement of the receiving bottle is conveniently realized, and the condition that the medium flows among different receiving bottles is avoided when the receiving bottle is replaced.

Description

Technical Field

[0001] The utility model relates to the field of experimental equipment, in particular to a continuous distillation receiving device. Background Art

[0002] When performing vacuum (or atmospheric pressure) distillation, a tail adapter is often required, generally a dovetail-shaped tail adapter, as Figure 1 shown, which can connect three receiving bottles, or a single-interface tail adapter with only one interface, as Figure 2 shown.

[0003] For the dovetail-shaped tail adapter, it can connect at most three receiving bottles. However, usually, due to the close distance between the three interfaces of the dovetail-shaped tail adapter, in actual use, the dovetail-shaped tail adapter is used to connect three small bottles or one small bottle and two large bottles. The dovetail-shaped tail adapter also has a disadvantage, that is, the interval angle between the three interfaces is small. When rotating the direction of the dovetail-shaped tail adapter to adjust the receiving bottle to be used to the middle position, it is easy to mix the liquid components in the receiving bottle filled with the solution into the other two receiving bottles. In addition, when the dovetail-shaped tail adapter is applied to continuous distillation operation, the receiving bottle for receiving low-boiling components cannot be sufficiently cooled or cannot be removed, which will lead to component loss.

[0004] The single-interface tail adapter can only connect one bottle. When performing distillation operations on a relatively large amount of products, the capacity of the receiving bottle connected to the single-interface tail adapter may not meet the liquid receiving requirements. At this time, it is necessary to first remove the vacuum, replace the new empty receiving bottle, and then continue distillation. In addition, for components with relatively low boiling points, during continuous distillation, frequently replacing the receiving bottle will result in partial product loss. Content of the Utility Model

[0005] Aiming at the situation that the solution is easily confused when the dovetail-shaped tail adapter in the prior art rotates the direction to swap the empty receiving bottle to the receiving position, and the problem that the single-interface tail adapter needs to first remove the vacuum and product loss will occur when replacing the new receiving bottle, the purpose of the utility model is to provide a continuous distillation receiving device to at least partially solve the above problems.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A continuous distillation receiving device comprises a tail pipe and a distillation tube connected to the inlet end of the tail pipe; two circumferentially spaced branch pipes are arranged on the side wall of the distillation tube, and receiving bottles are connected to the outlet ends of the branch pipes and the outlet ends of the tail pipe; three-way cocks and pressure relief holes are arranged on the side walls of the branch pipes and the side walls of the tail pipe; the three-way cock comprises a first state and a second state which are switchable to each other, when the three-way cock is in the first state, each of the receiving bottles is respectively connected to the corresponding branch pipe or the tail pipe, and when the three-way cock is in the second state, each of the receiving bottles is respectively connected to the corresponding pressure relief hole.

[0008] In a preferred embodiment, the tail pipe is a vacuum tail pipe, which includes a pipe body and an exhaust branch pipe connected to the side wall of the pipe body, and the exhaust branch pipe is used to connect a vacuum pumping device; a three-way cock and a pressure relief hole are provided on the side wall of the exhaust branch pipe, and the three-way cock includes a first state and a second state that can be switched to each other. When the three-way cock is in the first state, the vacuum pumping device is connected to the pipe body via the exhaust branch pipe, and when the three-way cock is in the second state, the vacuum pumping device is connected to the atmosphere via the pressure relief hole.

[0009] In a preferred embodiment, the three-way stopcock includes a valve body and a valve core, and the valve core is provided with three medium channels, the three medium channels are all perpendicular to the rotation axis of the valve core, and the three medium channels intersect with each other at the rotation axis of the valve core; three valve holes are correspondingly provided on the valve body, two of which are used to connect the receiving medium to enter and discharge the three-way stopcock, and the third valve hole is used to connect the pressure relief hole.

[0010] In a preferred embodiment, the three medium channels are arranged at 90° intervals in the circumferential direction.

[0011] In a preferred embodiment, the valve body is integrally formed on the branch pipe and the tail pipe, and the third valve hole is used as the pressure relief hole.

[0012] In a preferred embodiment, the branch pipe and the distillation pipe are an integrally formed structure; the two branch pipes are arranged on the side wall of the distillation pipe at a circumferential interval of 180°.

[0013] In a preferred embodiment, the connection between the tail pipe and the distillation tube, the connection between the tail pipe and the receiving bottle, the connection between the branch pipe and the receiving bottle, the connection between the three-way stopcock and the branch pipe, and the connection between the three-way stopcock and the tail pipe are all provided with ground edges.

[0014] By adopting the above technical scheme, the beneficial effect of the utility model is that: the continuous distillation receiving device provided by the utility model, due to the setting of the three-way stopcocks on the distillation tube, the branch tube, and the branch tube and the tail tube, can control the on-off state of the medium flowing to the receiving bottle by changing the state of the three-way stopcock, and can also realize the pressure relief operation of the receiving bottle without losing the vacuum pressure and the medium, so that the receiving bottle can be easily replaced, and when the receiving bottle is replaced, the medium will not flow between different receiving bottles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a dovetail tail pipe in the prior art;

[0016] Figure 2 It is a schematic diagram of a single-interface tail pipe in the prior art;

[0017] Figure 3 This is a schematic diagram of the structure of the continuous distillation receiving device in Example 1 of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the three-way cock in the utility model when it is in the first state;

[0019] Figure 5 It is a structural schematic diagram of the three-way cock in the utility model when it is in the second state;

[0020] Figure 6 It is a schematic diagram of the structure of the continuous distillation receiving device in Example 2 of the present utility model.

[0021] In the figure: 1-tail pipe, 11-tube body, 12-exhaust branch pipe, 2-distillation tube, 3-branch pipe, 4-receiving bottle, 5-three-way stopcock, 51-valve body, 52-valve core, 6-pressure relief hole. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", etc. are based on the description of the structure of the present invention as shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] The "first" and "second" in this technical solution are only used to distinguish the names of the same or similar structures, or corresponding structures with similar functions, and are not an arrangement of the importance of these structures, nor do they have a ranking, comparison of size, or other meanings.

[0025] In addition, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, the 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, or it can be a connection between the two structures. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood based on the overall idea of the utility model and the specific context of the scheme.

[0026] Embodiment 1

[0027] like Figure 3 As shown, an embodiment of the utility model provides a continuous distillation receiving device, including a tail pipe 1 and a distillation tube 2, wherein the tail pipe 1 is configured as a single-interface tail pipe, the outlet end of the distillation tube 2 is connected to the inlet end of the tail pipe 1, and the inlet end of the distillation tube 2 is used to connect to the medium flow outlet of the distillation equipment.

[0028] Two circumferentially spaced branch pipes 3 are provided on the side wall of the distillation tube 2. When in use, the outlet ends of the two branch pipes 3 are connected to a receiving bottle 4. For example, the two branch pipes 3 and the distillation tube 2 are integrally formed, and the two branch pipes 3 are arranged on the side wall of the distillation tube 2 at a circumferential interval of 180°. Of course, in other embodiments, the circumferential interval angle between the two branch pipes 3 can also be other values, such as 120°. It is easy to understand that the branch pipe 3 can be perpendicular or non-perpendicular to the distillation tube 2, and it is only necessary to ensure that the receiving bottle 4 connected to the branch pipe 3 does not rub against other components when the distillation tube 2 rotates.

[0029] The outlet end of the tail pipe 1 is also connected to a receiving bottle 4. In addition, a three-way cock 5 and a pressure relief hole 6 are provided on the side walls of the two branch pipes 3 and the side wall of the tail pipe 1.

[0030] The three-way stopcock 5 includes a first state and a second state that can be switched to each other. When the three-way stopcock 5 is in the first state, each receiving bottle 4 is connected to the corresponding branch pipe 3 or tail pipe 1, so that the medium can flow from the branch pipe 3 or tail pipe 1 to the corresponding receiving bottle 4. When the three-way stopcock 5 is in the second state, each receiving bottle 4 is connected to the corresponding pressure relief hole 6, so that the medium cannot flow from the branch pipe 3 or tail pipe 1 to the corresponding receiving bottle 4. At this time, each receiving bottle 4 is connected to the atmosphere through the pressure relief hole 6, so as to realize the pressure relief operation of the receiving bottle 4.

[0031] In this embodiment, Figure 4 and Figure 5 As shown, the three-way cock 5 includes a valve body 51 and a valve core 52, the valve core 52 is of a columnar structure, the valve body 51 is of a cylindrical structure, the diameter of the valve core 52 is adapted to the inner diameter of the valve body 51, and the two can rotate and seal with each other. Among them, three medium channels are opened on the side wall of the valve core 52, and the three medium channels are perpendicular to the rotation axis of the valve core 52, and the three medium channels intersect each other at the rotation axis of the valve core 52. In this embodiment, the three medium channels in the valve core 52 are specifically configured to be arranged at 90° intervals in the circumferential direction. Three valve holes are correspondingly opened on the valve body 51, and the three valve holes are also arranged at 90° intervals in the circumferential direction, wherein two coaxially arranged valve holes are used as the inlet port and the outlet port of the medium, and the two coaxially arranged valve holes are respectively connected to the branch pipe 3 (or the tail pipe 1), for example, the valve body 51 is correspondingly integrally formed on the branch pipe 3 (or the tail pipe 1), so that. The third valve hole on the valve body 51 is used as a pressure relief hole 6.

[0032] With such arrangement, when the three-way cock 5 is in the first state, two of the medium channels are respectively oriented toward the inlet and outlet ends of the branch pipe 3 or the tail pipe 1, and the third medium channel is oriented toward the side wall of the valve body 51 and is thus closed, so that the medium can flow from the branch pipe 3 or the tail pipe 1 to the corresponding receiving bottle 4. When the three-way cock 5 is in the second state, two of the medium channels are respectively oriented toward the inlet end of the branch pipe 3 or the tail pipe 1 and toward the air relief hole 6, and the third medium channel is oriented toward the side wall of the valve body 51 and is thus closed, so that the medium cannot flow from the branch pipe 3 or the tail pipe 1 to the corresponding receiving bottle 4. At this time, each receiving bottle 4 is connected to the atmosphere through the pressure relief hole 6, so as to realize the pressure relief operation of the receiving bottle 4.

[0033] In this embodiment, ground edges are provided at the connection between the tail pipe 1 and the distillation tube 2, the connection between the tail pipe 1 and the receiving bottle 4, the connection between the branch pipe 3 and the receiving bottle 4, and between the valve core 52 and the valve body 51 in the three-way stopcock 5 to achieve a good sealing effect.

[0034] The working process of the continuous distillation receiving device provided by the embodiment of the utility model is as follows:

[0035] When in use, the inlet end of the distillation tube 2 is connected to the medium outflow port of the distillation equipment, and the receiving bottle 4 is respectively connected to the tail pipe 1 and the two branch pipes 3 to carry out distillation. When the medium flows into the distillation tube 2, the three-way stopcock 5 on the tail pipe 1 or the branch pipe 3 can be rotated to the first state, and the medium can flow into the corresponding receiving bottle 4; as the distillation proceeds, when a certain receiving bottle 4 is filled with the medium, the corresponding three-way stopcock 5 can be rotated to the second state, at which time the receiving bottle 4 is connected to the atmosphere, and the vacuum inside is removed, and then the receiving bottle 4 filled with the medium is removed, and after replacing it with a new receiving bottle 4, the corresponding three-way stopcock 5 is rotated to the first state to continue receiving the medium; when the medium output rate is large, the three-way stopcock 5 on the tail pipe 1 or the branch pipe 3 can also be rotated to the first state at the same time, so that the two receiving bottles 4 are put into use at the same time.

[0036] It is easy to understand that, for the distillation tube 2, when the receiving bottle 4 connected to a downward branch pipe 3 is filled with medium, the three-way stopcock 5 on the branch pipe 3 can be rotated to the second state, at which time the receiving bottle 4 is connected to the atmosphere, the vacuum inside is removed, and the receiving bottle 4 filled with medium is removed; then the distillation tube 2 is rotated to exchange the positions of the two branch pipes 3, so that the new, empty receiving bottle 4 is rotated to a position convenient for receiving the medium, and then the corresponding three-way stopcock 5 is opened; at this time, another empty receiving bottle 4 can be connected to the idle branch pipe 3 for use. In this way, the time waste and efficiency reduction caused by replacing the receiving bottle 4 can be avoided.

[0037] Embodiment 2

[0038] like Figure 6 As shown, the tail pipe 1 configured in this embodiment is a single-interface vacuum tail pipe, that is, the tail pipe 1 includes a pipe body 11, and the pipe body 11 is tubular in structure, having an inlet end for receiving a medium to enter and an outlet end for discharging the medium; in addition, an exhaust branch pipe 12 is also provided on the side wall of the pipe body 11, for example, integrally formed, and the exhaust branch pipe 12 is used to connect a vacuum extraction device when in use.

[0039] The side wall of the exhaust branch pipe 12 is also provided with a three-way cock 5 and a pressure relief hole 6, and the arrangement is the same as that of the first embodiment. Accordingly, the three-way cock 5 also includes a first state and a second state that can be switched to each other. When the three-way cock 5 is in the first state, the vacuum pumping device is connected to the pipe body 11 through the exhaust branch pipe 12, and when the three-way cock 5 is in the second state, the vacuum pumping device is connected to the atmosphere through the pressure relief hole 6.

[0040] Such an arrangement enables the device provided in this embodiment to perform reduced-pressure distillation, that is, the three-way stopcock 5 on the exhaust branch pipe 12 is rotated to the first state, and then the vacuum pumping equipment connected to the exhaust branch pipe 12 is started, and the distillation equipment is vacuumed to perform reduced-pressure distillation.

[0041] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A continuous distillation receiving device, characterized in that: It includes a tail pipe and a distillation tube connected to the inlet end of the tail pipe; two branch pipes arranged circumferentially at intervals are provided on the side wall of the distillation tube, and receiving bottles are connected to the outlet ends of the branch pipes and the outlet ends of the tail pipe; three-way cocks and pressure relief holes are provided on the side walls of the branch pipes and the side walls of the tail pipe; the three-way cock includes a first state and a second state that are switchable to each other, when the three-way cock is in the first state, each receiving bottle is respectively connected to the corresponding branch pipe or the tail pipe, and when the three-way cock is in the second state, each receiving bottle is respectively connected to the corresponding pressure relief hole.

2. The continuous distillation receiving device according to claim 1, wherein: The tail pipe is a vacuum tail pipe, which includes a pipe body and an exhaust branch pipe connected to the side wall of the pipe body, and the exhaust branch pipe is used to connect a vacuum pumping device; a three-way cock and a pressure relief hole are provided on the side wall of the exhaust branch pipe, and the three-way cock includes a first state and a second state that can be switched to each other. When the three-way cock is in the first state, the vacuum pumping device is connected to the pipe body via the exhaust branch pipe, and when the three-way cock is in the second state, the vacuum pumping device is connected to the atmosphere via the pressure relief hole.

3. The continuous distillation receiving device according to claim 2, wherein: The three-way stopcock includes a valve body and a valve core, and the valve core is provided with three medium channels, the three medium channels are all perpendicular to the rotation axis of the valve core, and the three medium channels intersect with each other at the rotation axis of the valve core; three valve holes are correspondingly provided on the valve body, two of which are used to connect the receiving medium to enter and discharge the three-way stopcock, and the third valve hole is used to connect the pressure relief hole.

4. The continuous distillation receiving device according to claim 3, characterized in that: The three medium channels are arranged at 90° intervals in the circumferential direction.

5. The continuous distillation receiving device according to claim 3, characterized in that: The valve body is integrally formed on the branch pipe and the tail pipe, and the third valve hole is used as the pressure relief hole.

6. The continuous distillation receiving device according to claim 1, wherein: The branch pipe and the distillation pipe are an integrally formed structure; the two branch pipes are arranged on the side wall of the distillation pipe at a circumferential interval of 180°.

7. The continuous distillation receiving device according to claim 2, wherein: The connection between the tail pipe and the distillation tube, the connection between the tail pipe and the receiving bottle, the connection between the branch pipe and the receiving bottle, the connection between the three-way stopcock and the branch pipe, and the connection between the three-way stopcock and the tail pipe are all provided with ground edges.

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