Rotary evaporation device

Abstract

The utility model relates to a rotary evaporation device, which comprises an evaporation cylinder, a shaft end sleeve and a rotating shaft, the middle shaft tube is rotationally sleeved in the shaft end sleeve; the refrigerant air return pipe is arranged in the middle shaft pipe in a sleeving manner and extends into the evaporation cylinder; the refrigerant air inlet pipe is arranged in the refrigerant air return pipe in a sleeving manner and extends into the evaporation barrel; a first sealing ring is arranged between the middle shaft pipe and the shaft end sleeve, and a second sealing ring is arranged between the middle shaft pipe and the refrigerant air return pipe. Due to the fact that the rotary evaporation device only has two contact points, the number of the contact points needing to be sealed is effectively reduced, the corresponding sealing rings are arranged at the two contact points, the sealing technical effect can be achieved, and meanwhile the rotation performance of the device is considered.

Description

Technical Field

[0001] The present application belongs to the technical field of flake ice making machines, and in particular, is a rotary evaporation device of a flake ice making machine. Background Art

[0002] The rotary evaporation device is mainly used in flake ice machines. It is an important component of flake ice machines. The evaporation device achieves the function of rapid cooling by evaporating water through high-speed rotation. The existing evaporation devices of this type require a large number of sealing components and have a complex overall structure. There are many leakage points that affect the overall sealing performance. In addition, some existing evaporation devices require a dedicated outer tube to achieve their evaporation function. In general, the existing evaporation devices have technical problems such as poor sealing performance, high production and manufacturing costs, and high failure rates. Utility Model Content

[0003] The purpose of the present application is to provide a rotary evaporation device to solve one or more of the above-mentioned technical problems.

[0004] In order to adapt to any technical purpose or any technical problem to be solved in the present application, the following technical scheme is adopted: a rotary evaporation device, comprising: an evaporating cylinder, one end of which is protruding with an axial end sleeve; a central axis tube rotatably sleeved in the axial end sleeve; a refrigerant return pipe sleeved in the central axis tube and extending into the interior of the evaporating cylinder; and a refrigerant inlet pipe sleeved in the refrigerant return pipe and extending into the interior of the evaporating cylinder; a first sealing ring is arranged between the central axis tube and the axial end sleeve; a second sealing ring is arranged between the central axis tube and the refrigerant return pipe.

[0005] Furthermore, a step portion is formed in the shaft end sleeve; a flange portion is arranged on the central axis tube; and the flange portion abuts against the step portion to prevent the central axis tube from moving toward the inside of the evaporator tube.

[0006] Further, the shaft end sleeve has an inner wall, the inner wall includes a first inner wall section close to the evaporator tube and a second inner wall section connected to the first inner wall section, the inner diameter of the first inner wall section is smaller than the inner diameter of the second inner wall section, and the step portion is formed between the first inner wall section and the second inner wall section; the central axis tube has an outer wall, the outer wall includes a first outer wall section close to the inside of the evaporator tube and a second outer wall section connected to the first outer wall section, the outer diameter of the first outer wall section is smaller than the outer diameter of the second outer wall section, and the second outer wall section forms the flange portion.

[0007] Furthermore, a bearing is arranged between the first inner wall segment and the first outer wall segment.

[0008] Furthermore, a first sealing ring is arranged between the second inner wall section and the flange portion.

[0009] Furthermore, a fixing cap for restricting the central axis tube within the shaft end sleeve is arranged in the shaft end sleeve, and the fixing cap is sleeved on the refrigerant return pipe.

[0010] Furthermore, a third sealing ring is arranged between the fixing cap and the shaft end sleeve.

[0011] Furthermore, a retaining spring for compressing the fixing cap is provided in the shaft end sleeve to prevent the middle shaft tube from moving in the shaft end sleeve.

[0012] Furthermore, the second sealing ring is provided at the joints of the refrigerant return pipe, the central axis pipe and the fixing cap.

[0013] Furthermore, the flange portion of the central axis tube is provided with a groove, the fixing cap is provided with a convex edge and inserted into the groove, and a fourth sealing ring is provided at the connection between the convex edge and the groove.

[0014] Compared with the prior art, the rotary evaporator of the present application has only two contact points between the central axis tube and the axis end sleeve and the refrigerant return pipe that need to be sealed, which effectively reduces the number of contact points that need to be sealed in the entire device. Since there are fewer contact points that need to be sealed, it is only necessary to seal these two contact points to achieve the technical effect of sealing the entire device, while also taking into account the rotation performance of the device.

[0015] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 This is a cross-sectional schematic diagram of the rotary evaporation device of this application.

[0018] Figure 2 It is a cross-sectional schematic diagram of an embodiment of a rotary evaporation device of the present application.

[0019] Figure 3 for Figure 1 A partial enlarged view of .

[0020] Figure 4 for Figure 2 A partial enlarged view of .

[0021] Markings in the figure:

[0022] 10. Evaporation cylinder, 11. Shaft end sleeve, 111. First inner wall section, 112. Second inner wall section, 12. Bearing.

[0023] 20. Refrigerant return pipe, 21. Refrigerant inlet pipe, 210. Port.

[0024] 30. Central axis tube, 301. First outer side wall section, 302. Flange portion, 303. Groove.

[0025] 40. Fixed cap, 401. Raised brim.

[0026] 50. Transmission shaft, 51. First outer bearing, 52. Second outer bearing.

[0027] 61. First sealing ring, 62. Second sealing ring, 63. Third sealing ring, 64. Fourth sealing ring, 68. Circlip. DETAILED DESCRIPTION

[0028] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be interpreted as limiting the present application.

[0029] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0030] It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0031] The embodiments of the present application are described in detail below in conjunction with the above-mentioned drawings, and are shown in the drawings by examples of the embodiments, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary and can only be used to explain the present application, and cannot be interpreted as limiting the present application.

[0032] Typical embodiments of the present application are as follows: Figure 1 and Figure 3 As shown, the rotary evaporation device mainly includes an evaporation cylinder 10, one end of which is an axial end sleeve 11, and the evaporation cylinder 10 and the axial end sleeve 11 are connected and integrally formed, that is, the axial end sleeve 11 is a structure in which one end of the evaporation cylinder 10 protrudes outward. The corresponding material can enter the evaporation cylinder 10 through the axial end sleeve 11. The central axis tube 30 is sleeved in the axial end sleeve 11, and the central axis tube 30 is arranged parallel to the axial end sleeve 11, and the axial end sleeve 11 can rotate relative to the central axis tube 30, that is, the evaporation cylinder 10 is also arranged parallel to the central axis tube 30 and can rotate relative to the central axis tube 30.

[0033] The refrigerant return pipe 20 is sleeved in the central axis pipe 30, and one end of the refrigerant return pipe 20 extends into the evaporator tube 10. The port of the refrigerant return pipe 20 is located inside the evaporator tube 10, and is used to return the material inside the evaporator tube 10 to the outside of the evaporator tube 10. The refrigerant inlet pipe 21 is sleeved in the refrigerant return pipe 20 and extends into the evaporator tube 10. When the refrigerant inlet pipe 21 is located inside the evaporator tube 10, the port 210 of the refrigerant inlet pipe 21 also extends out of the refrigerant return pipe 20, so that the refrigerant can be transported to the inside of the evaporator tube 10. The port 210 is curved and faces the inner wall of the evaporator tube 10, so that the effect of transporting the refrigerant to the inside is better.

[0034] In one embodiment, the length of the portion of the refrigerant inlet pipe 21 that penetrates into the evaporator tube 10 is half the length of the evaporator tube 10. Such a length configuration enables the port 210 of the refrigerant inlet pipe 21 to evenly spray the refrigerant toward the inner wall of one end of the evaporator tube 10, so that the spraying area is maximized, thereby achieving a better effect of transporting the refrigerant to the interior.

[0035] A first sealing ring 61 is arranged between the center axis tube 30 and the shaft end sleeve 11. The first sealing ring 61 is sleeved on the center axis tube 30. When the center axis tube 30 is sleeved in the shaft end sleeve 11, the first sealing ring 61 is clamped between the center axis tube 30 and the shaft end sleeve 11, and can ensure that the shaft end sleeve 11 rotates relative to the center axis tube 30, that is, it can ensure that the evaporating tube 10 rotates relative to the center axis tube 30, and can effectively seal the contact point between the center axis tube 30 and the shaft end sleeve 11.

[0036] A second sealing ring 62 is provided between the central axis tube 30 and the refrigerant return pipe 20. The second sealing ring 62 is sleeved on the outside of the refrigerant return pipe 20. When the refrigerant return pipe 20 is sleeved in the central axis tube 30, the second sealing ring 62 is clamped between the central axis tube 30 and the refrigerant return pipe 20, so that the contact point between the central axis tube 30 and the refrigerant return pipe 20 when they are sleeved is sealed.

[0037] In addition, Figure 1 As shown, the other end of the evaporator tube 10 is connected to a transmission shaft 50, a first outer bearing 51 is provided on the outside of the transmission shaft 50, and a second outer bearing 52 is provided on the outside of the shaft end sleeve 11. The cooperation between the transmission shaft 50 and the first outer bearing 51, as well as the cooperation between the shaft end sleeve 11 and the second outer bearing 52, enables the evaporator tube 10 to rotate relatively stably when the snowflake ice maker is working; while ensuring the sealing performance, it can also take into account the relatively stable rotation performance of the evaporator tube 10.

[0038] Since the overall design of the evaporator has only two contact points, namely, the contact point between the shaft end sleeve 11 and the central axis tube 30, and the contact point between the central axis tube 30 and the refrigerant return pipe 20, the number of contact points that need to be sealed is effectively reduced. Only two sealing rings are needed to enable the rotary evaporator to achieve the technical effect of sealing.

[0039] As another typical embodiment of the present application, Figure 1 and Figure 2As shown, an axial end sleeve 11 is protruded at one end of the evaporator tube 10, and the central axis tube 30 is rotatably sleeved in the axial end sleeve 11 so that the axial end sleeve 11 can rotate relative to the central axis tube 30. A first sealing ring 61 is arranged between the central axis tube 30 and the axial end sleeve 11. The first sealing ring 61 is sleeved on the outer wall of the central axis tube 30, that is, the first sealing ring 61 is clamped between the outer wall of the central axis tube 30 and the inner wall of the axial end sleeve 11, so as to achieve sealing when the central axis tube 30 is sleeved on the axial end sleeve 11, and ensure that sealing is achieved when the axial end sleeve 11 rotates relative to the central axis tube 30. In addition, the refrigerant return pipe 20 is sleeved inside the central axis tube 30 and extends into the interior of the evaporator tube 10, and a second sealing ring 62 is sleeved on the outer wall of the refrigerant return pipe 20, that is, the second sealing ring 62 is clamped between the outer wall of the refrigerant return pipe 20 and the inner wall of the central axis tube 30, so that the contact point between the refrigerant return pipe 20 and the central axis tube 30 is sealed.

[0040] A step portion is formed on the inner wall of the shaft end sleeve 11, and a flange portion 302 is arranged on the center axis tube 30; the flange portion 302 abuts against the step portion, which is equivalent to achieving a compact fit between the center axis tube 30 and the shaft end sleeve 11 through the abutment between the flange portion 302 and the step portion, which can prevent the center axis tube 30 from moving toward the inside of the evaporator tube 10, making the connection between the center axis tube 30 and the shaft end sleeve 11 more secure when it is sleeved in the shaft end sleeve 11, thereby further improving its overall sealing performance on the basis of the original sealing.

[0041] As another embodiment of the present application, Figure 2 and Figure 4 As shown, on the basis of the above embodiment, in order to make the rotational fit between the central axis tube 30 and the shaft end sleeve 11 more stable, the shaft end sleeve 11 is further set, and the shaft end sleeve 11 has an inner side wall, and the inner side wall includes a first inner side wall section 111 close to the evaporation tube 10, and also includes a second inner side wall section 112 connected to the first inner side wall section 111, and the inner diameter of the first inner side wall section 111 is smaller than the inner diameter of the second inner side wall section 112, so that a step portion is formed in the shaft end sleeve 11, that is, the step portion is formed between the first inner side wall section 111 and the second inner side wall section 112. The central axis tube 30 has an outer side wall, and the outer side wall includes a first outer side wall section 301 close to the inside of the evaporation tube 10, and a second outer side wall section connected to the first outer side wall section 301, and the outer diameter of the first outer side wall section 301 is smaller than the outer diameter of the second outer side wall section, and a flange portion 302 is provided on the central axis tube 30, and the flange portion 302 is formed on the second outer side wall section. The flange portion 302 abuts against the step portion, thereby achieving further mutual cooperation between the central axis tube 30 and the shaft end sleeve 11, making the cooperation between the two more compact, preventing the central axis tube 30 from moving toward the inside of the evaporator tube 10, and making the cooperation between the central axis tube 30 and the shaft end sleeve 11 more compact when they are sleeved in the shaft end sleeve 11, thereby further improving its overall sealing performance on the basis of the original sealing.

[0042] In addition, if Figure 1 and Figure 3 As shown, in addition to the first outer bearing 51 and the second outer bearing 52, a bearing 12 is also provided. The bearing 12 is arranged on the outside of the central axis tube 30 and between the first inner wall section 111 and the first outer wall section 301; the transmission shaft 50 cooperates with the first outer bearing 51, and the shaft end sleeve 11 cooperates with the second outer bearing 52. The bearing 12 makes the first inner wall section 111 cooperate with the first outer wall section 301, that is, the central axis tube 30 and the shaft end sleeve 11 cooperate with each other, so that the evaporator tube 10 can rotate more stably, so that the evaporator tube 10 of the evaporation device of the present application can rotate relatively stably, and obtain the technical effect of stable rotation.

[0043] As another embodiment of the present application, Figure 1 and Figure 2 As shown, on the basis of the above-mentioned embodiments, in order to make the sealing performance of the rotary evaporation device of the present application better, specifically, to make the sealing effect of the contact point between the central axis tube 30 and the shaft end sleeve 11 better, a first sealing ring 61 is arranged between the second inner wall section 112 and the flange portion 302; that is, the first sealing ring 61 is sleeved on the second inner wall section 112, and when the shaft end sleeve 11 is sleeved on the central axis tube 30, the first sealing ring 61 is clamped between the second inner wall section 112 of the shaft end sleeve 11 and the flange portion 302 of the central axis tube 30, so that the contact point between the shaft end sleeve 11 and the central axis tube 30 is sealed. Due to the setting of this specific position, the rotary evaporation device of the snowflake making machine can obtain further sealing performance when the snowflake making machine is working.

[0044] As another typical case of this application, Figure 2 and Figure 4 As shown, a fixing cap 40 is provided in the shaft end sleeve 11, and the fixing cap 40 is used to limit the middle axis tube 30 in the shaft end sleeve 11. The fixing cap 40 is sleeved outside the refrigerant return pipe 20, that is, a through hole is provided in the fixing cap 40 to allow the refrigerant return pipe 20 to pass through, so that the refrigerant return pipe 20 passes through the fixing cap 40 and the middle axis tube 30 in sequence and enters the interior of the evaporating tube 10. The fixing cap 40 is sleeved on the shaft end sleeve 11, and a third sealing ring 63 is provided between the fixing cap 40 and the shaft end sleeve 11, that is, the third sealing ring 63 is sandwiched between the inner side wall of the shaft end sleeve 11 and the outer side wall of the fixing cap 40, so that the contact point between the fixing cap 40 and the shaft end sleeve 11 is sealed, and the fixing cap 40 can fix the middle axis tube 30 in the shaft end sleeve 11 while achieving the sealing effect, so as to achieve the effect of fixing the middle axis tube 30.

[0045] As a further embodiment of the present application, Figure 2 and Figure 4As shown, a retaining spring 68 is further provided in the shaft end sleeve 11 , and the retaining spring 68 can press the fixing cap 40 . The fixing cap 40 is pressed by the retaining spring 68 , and the middle axis tube 30 is further pressed in the shaft end sleeve 11 , which can effectively prevent the middle axis tube 30 from moving in the shaft end sleeve 11 .

[0046] As a further embodiment of the present application, Figure 2 and Figure 4 As shown, on the basis of the above embodiment, a groove 303 is further opened on the central axis tube 30, specifically, the groove 303 is opened on the flange portion 302 of the central axis tube 30, and the fixing cap 40 is provided with a flange 401, which is inserted into the groove 303, thereby increasing the friction force generated by the contact area between the central axis tube 30 and the fixing cap 40, so that the connection between the fixing cap 40 and the central axis tube 30 is tightened; a fourth sealing ring 64 is provided at the connection between the flange 401 and the groove 303 to achieve sealing of the connection, so that the connection between the fixing cap 40 and the central axis tube 30 is tightened while ensuring better sealing performance.

[0047] As a further embodiment of the present application, Figure 1 and Figure 3 As shown, in order to further improve the sealing performance, a second sealing ring 62 is provided at the abutment points of the refrigerant return pipe 20, the central axis pipe 30 and the fixed cap 40. That is, the second sealing ring 62 is clamped at the abutment points of the three components, which are respectively the joining positions of the inner wall of the central axis pipe 30 and the inner wall of the through hole of the fixed cap 40. The contact point between the joining position and the outer wall of the refrigerant return pipe 20 is sealed by a sealing ring 62, which can further ensure the sealing performance of the contact point and obtain further sealing performance.

[0048] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

[0049] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rotary evaporation device comprising: An evaporator tube, one end of which is protruding with an axial end sleeve; a central axis tube rotatably sleeved in the axial end sleeve; a refrigerant return pipe sleeved in the central axis tube and extending into the interior of the evaporator tube; and a refrigerant inlet pipe sleeved in the refrigerant return pipe and extending into the interior of the evaporator tube; characterized in that a first sealing ring is provided between the central axis tube and the axial end sleeve; and a second sealing ring is provided between the central axis tube and the refrigerant return pipe.

2. The rotary evaporation device according to claim 1, characterized in that: A step portion is formed in the shaft end sleeve; a flange portion is arranged on the central axis tube; the flange portion abuts against the step portion to prevent the central axis tube from moving toward the inside of the evaporator tube.

3. The rotary evaporator according to claim 2, characterized in that: The shaft end sleeve has an inner wall, which includes a first inner wall section close to the evaporator tube and a second inner wall section connected to the first inner wall section, the inner diameter of the first inner wall section is smaller than the inner diameter of the second inner wall section, and the step portion is formed between the first inner wall section and the second inner wall section; the central axis tube has an outer wall, which includes a first outer wall section close to the inside of the evaporator tube and a second outer wall section connected to the first outer wall section, the outer diameter of the first outer wall section is smaller than the outer diameter of the second outer wall section, and the second outer wall section forms the flange portion.

4. The rotary evaporator according to claim 3, characterized in that: A bearing is arranged between the first inner wall segment and the first outer wall segment.

5. The rotary evaporation device according to claim 3, characterized in that: The first sealing ring is arranged between the second inner wall section and the flange portion.

6. The rotary evaporation device according to claim 1, characterized in that: A fixing cap for limiting the middle axis tube in the shaft end sleeve is arranged in the shaft end sleeve, and the fixing cap is sleeved on the refrigerant return pipe.

7. The rotary evaporation device according to claim 6, characterized in that: A third sealing ring is arranged between the fixing cap and the shaft end sleeve.

8. The rotary evaporation device according to claim 6, characterized in that: A retaining spring for compressing the fixing cap is arranged in the shaft end sleeve to prevent the middle shaft tube from moving in the shaft end sleeve.

9. The rotary evaporation device according to claim 6, characterized in that: The second sealing ring is provided at the abutment point of the refrigerant return pipe, the central axis pipe and the fixing cap.

10. The rotary evaporation device according to claim 6, characterized in that: The flange portion of the central axis tube is provided with a groove, the fixing cap is provided with a convex edge and inserted into the groove, and a fourth sealing ring is provided at the connection between the convex edge and the groove.

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