Integrated mandrel structure

Abstract

The utility model relates to the technical field of film evaporators, in particular to an integrated mandrel structure which comprises an evaporation barrel. The core shaft is rotationally connected into the evaporation barrel; the first supporting piece is arranged at one end of the evaporation barrel, and the first supporting piece is rotationally connected with the mandrel; the second supporting piece is arranged at the other end of the evaporation barrel, and the second supporting piece is rotationally connected with the mandrel. According to the integrated core shaft structure, the first supporting piece and the second supporting piece are arranged at the two ends of the evaporation barrel respectively, so that double-arm supporting is carried out on the core shaft, the radial runout of the core shaft is reduced, and then stable work of the core shaft is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of thin film evaporators, in particular to an integrated core shaft structure. Background Art

[0002] High-efficiency rotary thin film evaporator is a new type of high-efficiency evaporator that can perform falling film evaporation under certain vacuum conditions by forming an "air knife" through the high-speed rotation of a fixed rotating scraper. It has a large heat transfer coefficient, high evaporation intensity, short and adjustable flow time, and is especially suitable for evaporation and concentration of heat-sensitive materials and materials with higher viscosity, and removal of solvents.

[0003] The maximum capacity of existing thin film evaporators is relatively limited. When the capacity is doubled or tripled, only two or three sets of equipment can be used in parallel, which will increase the investment and cost several times. For larger capacity, this parallel connection is obviously uneconomical and will only increase excessive investment and cost. Therefore, it is necessary to develop thin film evaporators with larger capacity.

[0004] The existing thin film evaporators with smaller production capacity generally adopt a single-point cantilever structure because the core shaft is shorter. However, for thin film evaporators with larger production capacity, this single-point cantilever structure cannot be used. However, due to the particularity of the industry, the pharmaceutical industry has clean requirements, so it is impossible to add auxiliary fulcrums inside the evaporation cylinder, and it is difficult to ensure the swing amount of the longer core shaft, especially the radial runout.

[0005] Reference Figure 1 The core shaft 73 is connected to the motor 7 through the coupling 71 and supported by the support 72. However, as the length L of the core shaft 73 increases, its radial swing amount will be too large, which is not conducive to the formation of thin film by the thin film evaporator and may even cause the machine to malfunction. Utility Model Content

[0006] The technical problem to be solved by the utility model is: in order to solve the technical problem in the prior art, the utility model provides an integrated core shaft structure.

[0007] The technical solution adopted by the utility model to solve its technical problems is: an integrated core shaft structure, including an evaporating cylinder; a core shaft, rotatably connected to the evaporating cylinder; a first support member, arranged at one end of the evaporating cylinder, the first support member is rotatably connected to the core shaft; a second support member, arranged at the other end of the evaporating cylinder, the second support member is rotatably connected to the core shaft.

[0008] The utility model provides an integrated core shaft structure, wherein a first support member and a second support member are respectively arranged at two ends of an evaporation cylinder body, so as to perform double-arm support on the core shaft, reduce the radial runout of the core shaft, and thus ensure stable operation of the core shaft.

[0009] Furthermore, a first shaft seal is provided between the core shaft and the evaporation cylinder, and the first shaft seal is provided at one end of the core shaft close to the first support member.

[0010] Furthermore, the second support member is arranged at the connection between the core shaft and the evaporation cylinder.

[0011] Furthermore, the second support member includes a mounting seat, a second shaft seal installed on the mounting seat, and a second bearing, and the second shaft seal is suitable for sealing between the core shaft and the evaporation cylinder.

[0012] Furthermore, the second shaft seal adopts a double-end mechanical seal, and a skeleton seal is also provided on the mounting seat, and the skeleton seal is arranged on both sides of the second bearing.

[0013] Furthermore, the core shaft is provided with a paddle, and the core shaft is provided with a pressure cover, and the pressure cover is connected to the paddle to limit the paddle along the radial and axial directions of the core shaft.

[0014] Furthermore, it also includes a rotary driving member, the output end of which is connected to the core shaft.

[0015] Furthermore, the rotary drive member is connected to the core shaft through a coupling, and the first support member is arranged between the coupling and the first shaft seal.

[0016] Further, the first support member includes a first bearing.

[0017] Furthermore, the second shaft seal is integrated with the second bearing.

[0018] The beneficial effects of the utility model are:

[0019] 1. The first support member and the second support member are respectively arranged at both ends of the evaporation cylinder so as to support the core shaft with two arms, reduce the radial runout of the core shaft, and thus ensure the stable operation of the core shaft;

[0020] 2. Double-end mechanical seals are used to form a reliable seal between the core shaft and the evaporator cylinder. At the same time, the second bearing supports and straightens the core shaft, thereby effectively reducing the radial swing value at the second shaft seal to ensure the service life of the second shaft seal. Skeleton seals are set on both sides of the second bearing to effectively prevent grease leakage from the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of a single-arm support solution in the prior art.

[0023] Figure 2It is a structural schematic diagram of an integrated core shaft structure in the utility model.

[0024] Figure 3 It is a schematic diagram of the mounting seat in the utility model.

[0025] Figure 4 It is a schematic diagram of the gland in the utility model.

[0026] Figure 5 It is a schematic diagram of the connection structure of the gland, the paddle and the core shaft in the utility model.

[0027] In the figure: 1, rotary drive member; 2, evaporator cylinder; 3, coupling; 4, first support member; 5, second support member; 51, mounting seat; 52, second bearing; 53, skeleton seal; 6, core shaft; 61, first shaft seal; 62, second shaft seal; 63, gland; 631, matching hole; 632, limiting hole; 633, radial limiting groove; 64, paddle; 65, boss; 651, shaft ring; 652, limiting ring; 7, motor; 71, coupling; 72, support member; 73, core shaft. DETAILED DESCRIPTION

[0028] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0030] The utility model discloses an integrated core shaft structure.

[0031] Reference Figures 2 to 5 An integrated core shaft structure includes a rotary drive member 1 and an evaporation cylinder 2. The output end of the rotary drive member 1 is connected to a coupling 3. The end of the coupling 3 away from the rotary drive member 1 is connected to a core shaft 6, and the core shaft 6 is rotatably connected to the evaporation cylinder 2. The core shaft 6 is rotatably connected to a first support member 4 and a second support member 5. The first support member 4 is provided at one end of the evaporation cylinder 2 and is located between the coupling 3 and the evaporation cylinder 2. The second support member 5 is provided at the other end of the evaporation cylinder 2 and is connected to the evaporation cylinder 2. During operation, the first support member 4 and the second support member 5 are respectively provided at both ends of the evaporation cylinder 2, so as to realize double-arm support for the core shaft 6, reduce the radial runout of the core shaft 6, and thereby ensure the stable operation of the core shaft 6. The rotary drive member 1 can adopt a motor.

[0032] Specifically, a first shaft seal 61 is connected between the core shaft 6 and the evaporation cylinder 2, and the first shaft seal 61 is arranged at one end of the core shaft 6 close to the first support member 4 for sealing. The first support member 4 can be a bearing to provide support for the core shaft 6 without affecting the rotation of the core shaft 6.

[0033] The second support member 5 is arranged at the connection between the core shaft 6 and the evaporation cylinder 2, and is located at the end of the evaporation cylinder 2 away from the rotating drive member 1. The second support member 5 includes a mounting seat 51, a second shaft seal 62 mounted on the mounting seat 51, and a second bearing 52. The second shaft seal 62 adopts a double-end mechanical seal to seal between the core shaft 6 and the evaporation cylinder 2. A skeleton seal 53 is also installed on the mounting seat 51. Two skeleton seals 53 are provided, and the two skeleton seals 53 are respectively installed on both sides of the second bearing 52. One skeleton seal 53 is installed at one end of the second bearing 52 away from the second shaft seal 62 to prevent the grease of the second bearing 52 from overflowing; the other skeleton seal 53 is installed between the second support 52 and the second shaft seal 62 to prevent the bearing grease from leaking to the second shaft seal 62. The use of double-end mechanical seals can form a reliable seal between the core shaft 6 and the evaporator cylinder 2. At the same time, the second bearing 52 is located in the middle position of the mounting seat, which can straighten the core shaft 6, thereby effectively reducing the radial swing value at the second shaft seal 62 to ensure the service life of the second shaft seal 62.

[0034] In addition, the mandrel 6 is also fixedly connected with a boss 65, on which a paddle 64 is sleeved, and the mandrel 6 is also sleeved with a gland 63, which abuts against the paddle 64, and the gland 63 is connected with a limiting hole 632 and a matching hole 631, the matching hole 631 matches the mandrel 6, and the limiting hole 632 is threadedly connected with the boss 65, so as to realize the fixed connection between the gland 63 and the mandrel 6. A collar 651 is fixedly connected to one end of the boss 65 away from the gland 63, so as to axially position and limit the paddle 64. The end surface of the paddle 64 facing the gland 63 is fixedly connected to a limiting ring 652, and the end surface of the gland 63 is provided with a radial limiting groove 633. When the gland 63 is screwed onto the boss 65, the end surface of the gland 63 contacts the end surface of the paddle 64, and the limiting ring 652 is located in the radial limiting groove 633, so that the gland 63 can limit the paddle 64 in both the axial and radial directions, thereby improving the stability of the movement of the paddle 64. The first support member 4 cooperates with the second support member 5 to ensure that the gap between the paddle 64 and the evaporation cylinder 2 is uniform, thereby ensuring the working effect of the thin film evaporator.

[0035] Working principle: The first support member 4 and the second support member 5 are respectively arranged at the two ends of the evaporation cylinder 2, so as to support the core shaft 6 with two arms, reduce the radial runout of the core shaft 6, and thus ensure the stable operation of the core shaft 6. Through the double-end mechanical seal, a reliable seal is formed between the core shaft 6 and the evaporation cylinder 2. At the same time, the second bearing 52 is supported to straighten the core shaft 6, thereby effectively reducing the radial swing value of the second shaft seal 62 to ensure the service life of the second shaft seal 62. Two skeleton seals 53 are respectively installed on both sides of the second bearing 52, one skeleton seal 53 is installed at one end of the second bearing 52 away from the second shaft seal 62, which can prevent the grease of the second bearing 52 from overflowing; the other skeleton seal 53 is installed between the second support 52 and the second shaft seal 62, so as to prevent the bearing grease from leaking to the second shaft seal 62.

[0036] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An integrated mandrel structure, characterized in that: include Evaporation cylinder (2); A core shaft (6) is rotatably connected to the evaporation cylinder (2); A first support member (4) is disposed at one end of the evaporation cylinder (2), wherein the first support member (4) is rotatably connected to the core shaft (6); A second support member (5) is provided at the other end of the evaporation cylinder (2), and the second support member (5) is rotatably connected to the core shaft (6); The second support member (5) comprises a mounting seat (51), a second shaft seal (62) mounted on the mounting seat (51), and a second bearing (52), wherein the second shaft seal (62) is suitable for sealing between the core shaft (6) and the evaporation cylinder (2); The second shaft seal (62) adopts a double-end mechanical seal, and a skeleton seal (53) is also provided on the mounting seat (51). The skeleton seal (53) is arranged on both sides of the second bearing (52).

2. The integrated mandrel structure according to claim 1, characterized in that: A first shaft seal (61) is provided between the core shaft (6) and the evaporation cylinder (2), and the first shaft seal (61) is provided at one end of the core shaft (6) close to the first support member (4).

3. The integrated mandrel structure according to claim 1, characterized in that: The second support member (5) is arranged at the connection between the core shaft (6) and the evaporation cylinder (2).

4. The one-piece mandrel structure according to claim 1, characterized in that: The core shaft (6) is provided with a paddle (64), and the core shaft (6) is provided with a pressure cover (63), and the pressure cover (63) is connected to the paddle (64) to limit the paddle (64) along the radial direction and axial direction of the core shaft (6).

5. The integrated mandrel structure according to claim 1, characterized in that: It also comprises a rotary drive member (1), the output end of the rotary drive member (1) being connected to the core shaft (6).

6. The integrated mandrel structure according to claim 5, characterized in that: The rotary drive member (1) is connected to the core shaft (6) via a coupling (3), and the first support member (4) is arranged between the coupling (3) and the first shaft seal (61).

7. The integrated mandrel structure according to claim 1, characterized in that: The first support member (4) comprises a first bearing.

8. The integrated mandrel structure according to claim 1, characterized in that: The second shaft seal (62) is integrated with the second bearing (52).

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