Traditional Chinese medicine extraction solvent recovery condensing connecting device

Abstract

The utility model discloses a traditional chinese medicine extraction solvent recovery condensing connecting device belongs to traditional chinese medicine extraction equipment technical field, including the conveying pipe, sealing mechanism and fixed establishment, and sealing mechanism includes flange, sealing groove, sealing ring no.

Description

Technical Field

[0001] This utility model relates to the technical field of traditional Chinese medicine extraction equipment, and in particular to a traditional Chinese medicine extraction solvent recovery and condensation connection device. Background Technology

[0002] In the process of extracting and producing traditional Chinese medicine, ethanol organic solvent is generally required as the extraction solvent. In order to reduce production costs and reduce environmental pollution, the solvent needs to be recycled and reused after extraction. One of the key steps in solvent recycling is to condense the solvent vapor into liquid through a condensation system. This process needs to be carried out under negative pressure or vacuum conditions to lower the boiling point of the solvent and protect the heat-sensitive components in the traditional Chinese medicine.

[0003] In solvent recovery systems, extraction equipment, condensation equipment, and recovery tanks need to be connected via pipelines. Therefore, the performance of the pipeline connection device directly affects the efficiency and safety of the entire recovery system. In existing technologies, flanges with gaskets or threaded interfaces are commonly used for pipeline connections. However, under the specific working conditions of solvent recovery from traditional Chinese medicine extraction, this conventional passive sealing method has defects. On the one hand, solvent vapors are volatile and flammable, and even slight leaks can lead to safety hazards and material losses. On the other hand, since the system is often under negative pressure, if the sealing at the connection is insufficient, external air will backflow into the system, disrupting the vacuum environment, causing a sharp drop in condensation efficiency or even process interruption. Conventional gaskets will age and fail under negative pressure and temperature changes, resulting in low sealing reliability.

[0004] Furthermore, the support structure used to fix the above-mentioned connection device is often poorly designed, consisting of a simple fixed bracket. Such brackets are difficult to adjust and align precisely during installation, resulting in excessive installation stress, which in turn damages the sealing effect. At the same time, under the influence of equipment vibration or thermal expansion and contraction, the connection may loosen, further exacerbating the risk of leakage. Moreover, the fixed structure is extremely inconvenient to disassemble and assemble during equipment maintenance or pipeline replacement, affecting production efficiency.

[0005] Therefore, this utility model proposes a solvent recovery and condensation connection device for traditional Chinese medicine extraction to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the traditional Chinese medicine extraction solvent recovery and condensation connection device, such as insufficient sealing at the connection, especially solvent leakage or air backflow under negative pressure conditions, and unstable support and inconvenient adjustment of the fixing device, this utility model aims to provide a traditional Chinese medicine extraction solvent recovery and condensation connection device with improved structure that can effectively solve the above problems.

[0007] This utility model provides a solvent recovery and condensation connection device for traditional Chinese medicine extraction, including: a conveying pipe, a sealing mechanism, and a fixing mechanism;

[0008] The sealing mechanism includes a flange, bolt 1, sealing groove, sealing ring 1, hollow sleeve, sealing ring 2, pipe and vacuum pump; the fixing mechanism includes a fixing platform, rubber pad and arc groove.

[0009] Furthermore, the flange of the sealing mechanism is fixed to the conveying pipe, the hollow sleeve is sleeved on the outside of the connection of the conveying pipe, the vacuum pump is connected to the hollow sleeve through the pipeline, the fixing platform of the fixing mechanism is installed at the bottom of the hollow sleeve, the rubber pad is placed inside the fixing platform, and the arc groove is opened at both ends of the fixing platform.

[0010] Preferably, the sealing ring is fixedly connected to the flange at a position corresponding to the sealing groove.

[0011] Preferably, the two sealing rings are fixedly connected at equal intervals inside the two ends of the hollow sleeve.

[0012] Preferably, the shape inside the fixing platform matches the shape of the hollow sleeve.

[0013] Preferably, the curvature of the arc-shaped groove matches the curvature of the outer diameter of the conveying pipe.

[0014] Preferably, the fixing mechanism further includes a fixing plate, a slider, a base, and a sliding groove. The fixing plate is fixedly connected to the bottom of the fixing platform, the slider is connected to the bottom of the fixing plate, the top of the base has the sliding groove, and the slider is slidably disposed in the sliding groove.

[0015] Preferably, as a further limitation of the above-mentioned fixing mechanism, the fixing mechanism further includes a second bolt and a connecting plate, the second bolt being fixed to the top of the slider, and the connecting plate being threadedly connected to the outer wall of the second bolt.

[0016] Preferably, as a specific embodiment, the fixing plate is fixedly connected to the bottom of the fixing platform at equal intervals, and the slider is fixedly connected to the front and rear sides of the bottom of the fixing plate.

[0017] Preferably, as a specific embodiment, the groove is formed on the top front and rear sides of the base.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting an external active sealing structure consisting of a sleeve, a second sealing ring, and a vacuum pump at the connection of the delivery pipe, and in conjunction with a basic seal consisting of a flange, a sealing groove, and a first sealing ring, forms a double sealing system. This solves the problem in the prior art where the connection device relies solely on passive sealing, resulting in insufficient sealing performance, leakage, or air backflow under negative pressure or solvent vapor pressure. It improves the sealing performance at the connection, effectively prevents solvent loss, and ensures the vacuum degree of the recovery system.

[0020] 2. This utility model solves the problems of unstable support, difficulty in aligning the position during installation, and cumbersome disassembly of the sealing device in the prior art by setting a fixed platform with rubber pads and arc grooves, and cooperating with an adjustable locking mechanism composed of sliders, grooves, connecting plates and bolts. The support is stable and the installation position can be flexibly adjusted. The locking is firm and reliable and the disassembly and assembly are quick and convenient during equipment maintenance or transportation. Attached Figure Description

[0021] Figure 1 This is a perspective view of the traditional Chinese medicine extraction solvent recovery and condensation connection device proposed in this utility model;

[0022] Figure 2 This is a front view of the traditional Chinese medicine extraction solvent recovery and condensation connection device proposed in this utility model;

[0023] Figure 3 This is a split view of the sealing mechanism of the traditional Chinese medicine extraction solvent recovery and condensation connection device proposed in this utility model;

[0024] Figure 4 This is a split view of the fixing mechanism of the traditional Chinese medicine extraction solvent recovery and condensation connection device proposed in this utility model.

[0025] Legend:

[0026] 1. Delivery pipe; 2. Sealing mechanism; 201. Flange; 202. Bolt 1; 203. Sealing groove; 204. Sealing ring 1; 205. Sleeve; 206. Sealing ring 2; 207. Pipeline; 208. Vacuum pump; 3. Fixing mechanism; 301. Fixing platform; 302. Rubber pad; 303. Arc groove; 304. Fixing plate; 305. Sliding block; 306. Connecting plate; 307. Bolt 2; 308. Slide groove; 309. Base. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 4 This utility model provides a traditional Chinese medicine extraction solvent recovery and condensation connection device, including a conveying pipe 1, a sealing mechanism 2 disposed at the connection of the conveying pipe 1, and a fixing mechanism 3 for supporting the sealing mechanism 2. The sealing mechanism 2 is used to tightly seal the connection of the conveying pipe 1, and the fixing mechanism 3 is used to ensure the stable operation of the sealing mechanism 2 and provide convenient adjustment. The sealing mechanism 2 includes a flange 201, a first bolt 202, a sealing groove 203, a first sealing ring 204, a hollow sleeve 205, a second sealing ring 206, a pipe 207, and a vacuum pump 208. The fixing mechanism 3 includes a fixing platform 301, a rubber pad 302, an arc groove 303, a fixing plate 304, a slider 305, a connecting plate 306, a second bolt 307, a sliding groove 308, and a base 309. The flange 201 is fixed to the conveying pipe 1, and the bolts... A 202 is used to connect to a flange 201. A sealing groove 203 is formed on the flange 201. A sealing ring 204 is fixedly connected to the flange 201. A sleeve 205 is fitted onto the outside of the connection of the conveying pipe 1. A second sealing ring 206 is set at both ends of the sleeve 205. A vacuum pump 208 is connected to the sleeve 205 via a pipe 207. A fixed platform 301 is installed at the bottom of the sleeve 205. A rubber pad 302 is set inside the fixed platform 301. An arc groove 303 is formed at both ends of the fixed platform 301. A fixed plate 304 is fixedly connected to the bottom of the fixed platform 301. A slider 305 is connected to the bottom of the fixed plate 304. A sliding groove 308 is formed on the top of the base 309. The slider 305 is slidably set in the sliding groove 308. A second bolt 307 is fixed to the top of the slider 305. A connecting plate 306 is threadedly connected to the outer wall of the second bolt 307.

[0030] Please refer to Figure 3The sealing mechanism 2 includes a flange 201 fixed to the conveying pipe 1. The flange 201 is used to achieve basic connection at the end of the conveying pipe 1. Multiple bolts 202 are threaded and pass through the flange 201 to tightly fix the flange 201. A sealing groove 203 is provided in the middle of the left side of the flange 201. The sealing groove 203 is an annular groove. A sealing ring 204 is fixedly connected to the right side of the flange 201 and corresponds to the sealing groove 203. When the flange 201 is tightened by the bolts 202, the sealing ring 204 is embedded in the sealing groove 203 of the flange 201 on the other side, forming the first layer of basic sealing structure. The sealing mechanism 2 also includes a key hollow sleeve 205. The hollow sleeve 205 is sleeved on the outside of the connection of the conveying pipe 1 after the basic sealing is completed. The inside of the hollow sleeve 205 is a hollow cavity. Sealing rings are fixedly connected at equal intervals inside both ends of the hollow sleeve 205. The sealing ring 206 is an elastic sealing ring, and its inner ring is tightly fitted to the outer wall of the delivery pipe 1. A pipe 207 is connected to the middle of the right end of the rear side of the hollow sleeve 205. The other end of the pipe 207 is connected to the vacuum pump 208. When the vacuum pump 208 is started, the air inside the hollow cavity of the hollow sleeve 205 is extracted through the pipe 207. This structure creates a negative pressure state inside the hollow sleeve 205. The external atmospheric pressure compresses the hollow sleeve 205 inward and forces the sealing ring 206 to fit tightly to the outer surface of the delivery pipe 1 with greater pressure, which improves the sealing effect at the connection of the delivery pipe 1. This dual sealing structure, which combines the passive seal composed of the flange 201, sealing groove 203 and sealing ring 204 with the active negative pressure seal composed of the hollow sleeve 205, sealing ring 206 and vacuum pump 208, ensures the reliability of the connection during the solvent recovery process.

[0031] As a preferred embodiment, please refer to Figure 3 The sealing ring 204 is fixedly connected to the flange 201 at the position corresponding to the sealing groove 203 to ensure that it can be accurately embedded in the sealing groove 203 when the flange 201 is tightened.

[0032] As another preferred embodiment, sealing ring 206 is fixedly connected at equal intervals to the inside of both ends of hollow sleeve 205, so as to form a uniform annular sealing surface at both ends when the hollow sleeve 205 is evacuated.

[0033] As another preferred embodiment, please refer to Figure 4 The shape inside the fixed platform 301 matches the shape of the hollow sleeve 205, so that the hollow sleeve 205 can be stably placed inside the fixed platform 301. At the same time, the rubber pad 302 is fixedly connected to the contact surface between the inside of the fixed platform 301 and the hollow sleeve 205. The rubber pad 302 is elastic, which can further enhance the tightness of the fit and play an anti-slip role.

[0034] As another preferred embodiment, the arc-shaped grooves 303 opened at both ends of the fixed platform 301 are fitted with the arc of the outer diameter of the conveying pipe 1, and are used to limit and assist the conveying pipe 1 during installation.

[0035] As another preferred embodiment, please refer to Figure 4 The fixing mechanism 3 further includes a fixing plate 304, a slider 305, a base 309, and a groove 308. The fixing plate 304 is fixedly connected to the bottom of the fixing platform 301 at equal intervals. The slider 305 is fixedly connected to the front and rear sides of the bottom of the fixing plate 304. The top front and rear sides of the base 309 have grooves 308. The slider 305 is slidably disposed in the groove 308 to realize the position adjustment of the fixing platform 301.

[0036] As a further preferred embodiment of the above-mentioned adjustable fixing scheme, the fixing mechanism 3 also includes a second bolt 307 and a connecting plate 306. The second bolt 307 is fixed to the top of the slider 305, and the connecting plate 306 is threaded to the outer wall of the second bolt 307. After the slider 305 is adjusted to the correct position, the connecting plate 306 and the second bolt 307 are tightened to achieve locking.

[0037] Working principle: When solvent recovery from traditional Chinese medicine extraction is required, the two ends of the delivery pipe 1 are connected by flange 201 and bolt 202. At this time, sealing ring 204 and sealing groove 203 cooperate to form a basic seal. After the basic seal is completed, hollow sleeve 205 is sleeved on the outside of the connection of delivery pipe 1. Sealing ring 206 at both ends of hollow sleeve 205 fits tightly against the outer wall of delivery pipe 1. Then, vacuum pump 208 is started. Vacuum pump 208 starts to extract air from the hollow cavity inside hollow sleeve 205 through pipe 207. As the air is discharged, a negative pressure is formed inside hollow sleeve 205. Under the action of external atmospheric pressure, hollow sleeve 205 is compressed inward. This compression force forces sealing ring 206 to press tightly against the outer surface of delivery pipe 1 with greater pressure, forming a second layer of active enhanced seal. This double sealing structure greatly improves the sealing effect at the connection and effectively prevents solvent leakage during transportation or condensation.

[0038] To ensure the stable operation of the sealing mechanism 2, the hollow sleeve 205 is placed inside the fixing platform 301 of the fixing mechanism 3 during installation. The rubber pad 302 inside the fixing platform 301 is tightly fitted to the outer wall of the hollow sleeve 205, providing anti-slip and stable support. Simultaneously, the arc-shaped grooves 303 at both ends of the fixing platform 301 hold the conveying pipe 1 in place, preventing displacement. When the installation position of the sealing mechanism 2 needs adjustment, the slider 305 connected to the fixing plate 304 at the bottom of the fixing platform 301 can slide freely within the sliding groove 308 at the top of the base 309, facilitating flexible adjustment of the installation angle or position of the fixing platform 301. After moving to the designated position, it can be rotated... Connecting plate 306 and tightening bolt 307 will press the surface of base 309 against the connecting plate 306, and slider 305 will be locked in the slide groove 308. This double fixing method of slide rail and bolt locking can ensure that fixing plate 304 is firmly fixed on base 309, so that fixing platform 301 stably supports sealing mechanism 2 to perform sealing work. When the equipment is finished and needs to be disassembled or transferred, first loosen bolt 307, and then loosen connecting plate 306, so that slider 305 can be released from the fastening state. After slider 305 is released from the fastening state, fixing plate 304 and the entire fixing platform 301 can be quickly removed from base 309, which facilitates the transfer and maintenance of equipment.

Claims

1. A solvent recovery and condensation connection device for traditional Chinese medicine extraction, comprising: The delivery pipe (1), the sealing mechanism (2) provided at the connection of the delivery pipe (1), and the fixing mechanism (3) supporting the sealing mechanism (2); The sealing mechanism (2) is characterized in that it includes a flange (201) fixed to the conveying pipe (1), a bolt (202), a sealing groove (203) opened on the flange (201), a sealing ring (204), a hollow sleeve (205) sleeved on the outside of the connection of the conveying pipe (1), a sealing ring (206) provided at both ends of the sleeve (205), a pipe (207), and a vacuum pump (208), wherein the vacuum pump (208) is connected to the sleeve (205) through the pipe (207); The fixing mechanism (3) includes a fixing platform (301) installed at the bottom of the sleeve (205), a rubber pad (302) disposed inside the fixing platform (301), and arc-shaped grooves (303) opened at both ends of the fixing platform (301).

2. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 1, characterized in that, The sealing ring (204) is fixedly connected to the flange (201) at the position corresponding to the sealing groove (203).

3. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 1, characterized in that, The sealing rings (206) are fixedly connected at equal intervals to the inside of both ends of the sleeve (205).

4. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 1, characterized in that, The shape inside the fixed platform (301) matches the shape of the sleeve (205).

5. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 1, characterized in that, The arc of the arc groove (303) matches the arc of the outer diameter of the conveying pipe (1).

6. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 1, characterized in that, The fixing mechanism (3) further includes a fixing plate (304), a slider (305), a base (309), and a groove (308). The fixing plate (304) is fixedly connected to the bottom of the fixing platform (301), the slider (305) is connected to the bottom of the fixing plate (304), the groove (308) is provided on the top of the base (309), and the slider (305) is slidably disposed in the groove (308).

7. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 6, characterized in that, The fixing mechanism (3) further includes bolt two (307) and connecting plate (306). Bolt two (307) is fixed to the top of the slider (305), and connecting plate (306) is threaded to the outer wall of bolt two (307).

8. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 6, characterized in that, The fixing plate (304) is fixedly connected to the bottom of the fixing platform (301) at equal intervals, and the slider (305) is fixedly connected to the front and rear sides of the bottom of the fixing plate (304).

9. The traditional Chinese medicine extraction solvent recovery and condensation connection device according to claim 6, characterized in that, The groove (308) is formed on the front and rear sides of the top of the base (309).

Images