Filtering and cleaning system for extraction tank production

Abstract

The utility model provides a filtering and cleaning system for extraction tank production, which comprises the following parts: an extraction tank unit comprises an extraction tank body and a condenser, a cleaning nozzle is arranged in the extraction tank body, and the extraction tank body is communicated with the condenser to form a circulation loop; the liquid outlet and circulation unit comprises a buffer tank, a variable frequency pump and at least one filter, the filter is respectively communicated with the buffer tank and the extraction tank body, and the variable frequency pump is respectively communicated with the buffer tank, the extraction tank body and the cleaning nozzle; the control unit comprises a DCS control part and a frequency conversion control part. The frequency conversion control part is in communication connection with the DCS control part and the frequency conversion pump. According to the filtering and cleaning system for extraction tank production, the filtering effect of liquid medicine can be improved, and online dynamic cleaning can be synchronously realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pharmaceutical mechanical equipment relates to a kind of extraction tank production filtration cleaning system. BACKGROUND

[0002] Extraction tank is for traditional Chinese medicine factory to cook, extract process involves the multi-purpose equipment, is widely used in the extraction of the components contained in plant products, most extraction processes involve liquid circulation, need to ensure that decoction, extraction process tank liquid temperature and concentration uniformity.And the efficiency of liquid filtration affects subsequent concentration and preparation, while most extraction tanks are large in size, involve multi-path pipeline, the traditional soaking cleaning mode has large cleaning dead angle, and the cleaning effect cannot be guaranteed, and also needs to consume a large amount of water, electricity and steam energy.Therefore, an extraction tank production filtration cleaning system that can meet the needs of many aspects is crucial. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an extraction tank production filtration cleaning system, which can meet the requirements of production process stability, reduce impurities in the liquid, realize online cleaning, improve the cleaning effect and achieve the purpose of water and energy saving.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides an extraction tank production filtration cleaning system, comprising the following parts:

[0005] Extraction tank unit, the extraction tank unit includes extraction tank body and condenser, the extraction tank body is equipped with cleaning spray head, the extraction tank body and condenser are communicated to form a circulation loop to make extraction liquid in the extraction tank body heated and evaporated and condensed backflow;

[0006] Liquid outlet and circulation unit, the liquid outlet and circulation unit includes buffer tank, variable frequency pump and at least one filter, the filter is respectively communicated with buffer tank, extraction tank body, the variable frequency pump is respectively communicated with buffer tank, extraction tank body and cleaning spray head;

[0007] Control unit, the control unit includes DCS control part and variable frequency control part, the variable frequency control part is respectively communicated with DCS control part and variable frequency pump.

[0008] As described above, the utility model provides an extraction tank production filtration cleaning system, which has the following beneficial effects:

[0009] (1) The extraction tank production filtering and cleaning system provided by the utility model improves the sealing mode of the filter by reforming the liquid outlet and circulation system of the extraction tank, and adopts the combination of the frequency conversion pump and the three-dimensional rotary cleaning nozzle, so that the filtering effect of the medicinal liquid is improved, the impurities in the medicinal liquid are reduced, online dynamic cleaning is realized at the same time of cleaning, the cleaning effect is improved, the cleaning time is shortened, the amount of water used for cleaning is reduced, and the effects of water and energy saving are achieved.

[0010] (2) The extraction tank production filtering and cleaning system provided by the utility model realizes stable control of the production process through the cooperation of the control unit, the extraction tank unit and the liquid outlet and circulation unit, reduces the impurities of the medicinal liquid through the improvement of the sealing property of the filter, and realizes the purpose of online circulation dynamic cleaning under the cooperation of the above units, so that the cleaning effect is improved and energy consumption is reduced.

[0011] (3) The frequency of the frequency conversion pump of the extraction tank production filtering and cleaning system provided by the utility model can be set according to the demand of the circulation amount, so that the quick switching of low circulation amount production and high circulation amount cleaning can be realized.

[0012] (4) The extraction tank production filtering and cleaning system provided by the utility model can be used in the production process of traditional Chinese medicinal materials such as soaking, decocting and extracting, which needs to accurately control the process parameters, and can also use liquid alkali and drinking water with appropriate concentration for online circulation cleaning.

[0013] (5) The extraction tank production filtering and cleaning system provided by the utility model is suitable for multiple purposes, has the advantages of ingenious design, flexible operation and convenient use, and can be applied to other production, filtering and tank internal cleaning using large tanks. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 shows the overall structure of the extraction tank production filtering and cleaning system.

[0015] Figure 2 Fig. 2 shows the filter structure of the extraction tank production filtering and cleaning system.

[0016] REFERENCE NUMERALS

[0017] 1 extraction tank body 2 condenser 201 shell layer 202 tube layer 203 cooling water pipe 204 evaporation pipe 205 return pipe 3 cleaning spray head 4 buffer tank 5 variable frequency pump 6 filter 61 main body 62 filter cartridge 63 screen 64 first blocking ring 65 second blocking ring 66 outer rim 67 third blocking ring 68 fourth blocking ring 69 first fixing member 610 first fixing hole 611 second fixing hole 612 third fixing hole 613 fourth fixing hole 614 second fixing member 615 handle 7 DCS control part 8 variable frequency control part 91 upper jacket 92 lower jacket 93 pot door jacket 10 first steam input pipe 101 first steam input main pipe 102 first steam input first branch pipe 103 first steam input second branch pipe 104 first steam input third branch pipe 105 first steam regulating valve 106 first steam pressure sensor 11 second steam input pipe 111 second steam input main pipe 112 second steam input first branch pipe 113 second steam input second branch pipe 114 second steam regulating valve 115 second steam pressure sensor 116 first steam bypass valve 117 first bypass branch pipe 12 first steam drain pipe 121 first steam drain valve 122 second steam bypass valve 123 second bypass branch pipe 13 second steam drain pipe 131 second steam drain main pipe 132 second steam drain first branch pipe 133 second steam drain second branch pipe 134 second steam drain valve 135 third steam bypass valve 136 third bypass branch pipe 14 feeding port 15 evaporation port 16 first vent pipe 17 solvent pipe 18 cleaning water pipe 19 first vent valve 20 solvent valve 21 cleaning water valve 22 pot door 23 compressed air pipe 24 compressed air valve 25 liquid outlet pipe 26 first liquid outlet valve 27 second vent pipe 28 second vent valve 29 first communication pipe 30 on-line liquid level meter 31 second communication pipe 32 output pipe 33 second liquid outlet valve 34 start-stop valve 35 chemical liquid circulation pipe 36 switching pipe 37 circulation valve 38 production valve 39 switching hand valve 40 third vent pipe 41 third vent valve 42 discharge valve DETAILED DESCRIPTION

[0018] The embodiments of the utility model are described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.

[0019] Please refer to Figures 1 to 2It is to be understood that the structure, proportion, size and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical substantive significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also regarded as the scope of the present application.

[0020] The utility model provides a kind of extraction tank production filtration cleaning system, as shown in Figures 1-2 It includes the following parts:

[0021] Extraction tank unit, the extraction tank unit includes extraction tank body 1 and condenser 2, the extraction tank body 1 is equipped with cleaning spray head 3, the extraction tank body 1 is communicated with condenser 2 to form circulation loop to make extraction tank body 1 extraction liquid is heated and evaporated and condensed backflow;

[0022] Liquid outlet and circulation unit, the liquid outlet and circulation unit includes buffer tank 4, variable frequency pump 5 and at least one filter 6, the filter 6 is communicated with buffer tank 4, extraction tank body 1 respectively, the variable frequency pump 5 is communicated with buffer tank 4, extraction tank body 1, cleaning spray head 3 respectively;

[0023] Control unit, the control unit includes DCS control part 7 and variable frequency control part 8, the variable frequency control part 8 is communicated with DCS control part 7, variable frequency pump 5 respectively.

[0024] In the above system, as shown in Figure 1 The extraction tank body 1 is provided with a jacket.

[0025] In a specific embodiment, as shown in Figure 1 The jacket includes upper jacket 91, lower jacket 92 and pot door jacket 93, the upper jacket 91 is arranged on the upper part of the outer side wall of the extraction tank body 1, the lower jacket 92 is arranged on the lower part of the outer side wall of the extraction tank body 1, and the pot door jacket 93 is arranged on the bottom of the extraction tank body 1.

[0026] The jacket is supplied with heating medium, which is generally saturated steam. The steam inlet in the jacket can be adjusted individually according to actual demand, that is, according to the temperature requirement of production process or the requirement of cleaning temperature, to realize the heating function, so as to meet the demand of different heating states, and to provide heating for production and cleaning process.

[0027] In a further preferred embodiment, as shown in Figure 1 The first steam input pipe 10 is provided with a first steam regulating valve 105 and a first steam pressure sensor 106 in sequence along the steam input direction. The first steam input pipe 10 can control the three jackets (the upper jacket 91, the lower jacket 92 and the pot door jacket 93) to heat at the same time by opening the first steam regulating valve 105, which is mainly used for the extraction and temperature rising process of high liquid level and can meet the heating requirements of boiling, extraction, cleaning and the like of different liquid levels.

[0028] In a further preferred embodiment, as shown in Figure 1 The second steam input pipe 11 is provided with a second steam regulating valve 114 and a second steam pressure sensor 115 in sequence along the steam input direction. The second steam regulating valve 114 is provided with a first steam bypass valve 116 in parallel, and the first steam bypass valve 116 is communicated with the second steam input main pipe 111 through a first bypass branch pipe 117. The second steam input pipe 11 can control the two jackets (the lower jacket 92 and the pot door jacket 93) to heat at the same time by opening the second steam regulating valve 114, which is mainly used for the extraction and temperature rising process of medium and low liquid level and the temperature holding process after reaching the extraction temperature.

[0029] In a further preferred embodiment, as shown in Figure 1As shown, the upper jacket 91 is further connected with a first steam drain pipe 12, and a first steam drain valve 121 is arranged on the first steam drain pipe 12, which is used for discharging steam condensate of the upper jacket 91 in daily production process. The first steam drain valve 121 is connected in parallel with a second steam bypass valve 122, which is connected with the first steam drain pipe 12 through a second bypass branch pipe 123, and is used for discharging condensate in the pipeline before production and discharging steam condensate in case of steam drain valve failure.

[0030] In a further preferred embodiment, as shown in Figure 1 As shown, the lower jacket 92 and the pot door jacket 93 are further connected with a second steam drain pipe 13, which includes a second steam drain main pipe 131, a second steam drain first branch pipe 132 and a second steam drain second branch pipe 133. One end of the second steam drain first branch pipe 132 and the second steam drain second branch pipe 133 are connected with the second steam drain main pipe 131 respectively. The other end of the second steam drain first branch pipe 132 is connected with the lower jacket 92, and the second steam drain second branch pipe 133 is connected with the pot door jacket 93. A second steam drain valve 134 is arranged on the second steam drain main pipe 131, which is used for discharging steam condensate of the lower jacket 92 and the pot door jacket 93 in daily production process. The second steam drain valve 134 is connected in parallel with a third steam bypass valve 135, which is connected with the second steam drain main pipe 131 through a third bypass branch pipe 136, and is used for discharging condensate in the pipeline before production and discharging steam condensate in case of steam drain valve failure.

[0031] In a further preferred embodiment, the materials of the first steam input pipe 10, the second steam input pipe 11, the first steam drain pipe 12 and the second steam drain pipe 13 are carbon steel or stainless steel, which can be customized and installed according to requirements.

[0032] In a specific embodiment, the material of the jacket is cast iron.

[0033] In the above system, the material of the extraction tank 1 is stainless steel, specifically SUS304. The extraction tank 1 is the main body of production and cleaning.

[0034] In the above system, as shown in Figure 1 The top of the extraction tank 1 is provided with a feeding port 14 and an evaporation port 15. The top of the extraction tank 1 is further connected with a first vent pipe 16, a solvent pipe 17 and a cleaning water pipe 18, and the cleaning water pipe 18 is connected with the cleaning spray head 3.

[0035] In a specific embodiment, as shown in Figure 1As shown, the first vent pipe 16 is provided with a first vent valve 19, the solvent pipe 17 is provided with a solvent valve 20, and the cleaning water pipe 18 is provided with a cleaning water valve 21.

[0036] The feeding port 14 is used for feeding production materials or adding cleaning agents. The evaporation port 15 is used for evaporation of heating process liquid. The first vent pipe 16 is used for pressure relief. The solvent pipe 17 is used for production of solvent, which is a commonly used solvent including but not limited to drinking water or ethanol, etc. The cleaning water pipe 18 is used for addition of cleaning water, which can be drinking water.

[0037] The materials of the solvent pipe 17 and the cleaning water pipe 18 are stainless steel, specifically SUS304 or 316 stainless steel. According to the flow requirement, a suitable pipe diameter is selected, and the pipe is cut into different lengths according to the layout.

[0038] In the above system, the cleaning spray head 3 is a commonly used cleaning spray head, which can be directly selected and purchased from a supplier, and is preferably a three-dimensional rotary cleaning spray head, specifically a corresponding cleaning spray head produced by Kelineng Company, or can be designed and customized by a professional spray head engineer according to the use requirement. Specifically, after the cleaning spray head 3 is started by the DCS control part 7, the cleaning water input from the cleaning water pipe 18 is rotated by 360° under the pressurized circulation control of the frequency conversion pump 8 to achieve dead angle-free cleaning. The height of the cleaning spray head 3 in the extraction tank body 1 can be confirmed according to the test of the cleaning effect.

[0039] In the above system, the material of the cleaning spray head 3 is stainless steel, specifically SUS304.

[0040] In the above system, the cleaning spray head 3 has 2-4 water outlet holes, preferably 4 water outlet holes.

[0041] In the above system, the working pressure of the cleaning spray head 3 is 0.4-1.0 MPa, preferably 0.4-0.6 MPa. The appropriate working pressure can be selected according to the difficulty of cleaning and the pressure that can be reached by the frequency conversion pump.

[0042] In the above system, the material of the condenser 2 is stainless steel, specifically SUS304.

[0043] In the above system, the condenser 2 is a commonly used condenser, specifically a horizontal shell-and-tube condenser. It is used for heat exchange cooling by a cooling medium to achieve condensation and reflux of the solvent in the heating process.

[0044] In the above system, as shown in FIG. 1, the condenser 2 is connected to the extraction tank body 1 through a condenser pipe 22, and the condenser pipe 22 is provided with a condenser valve 23. Figure 1As shown, the condenser 2 is provided with a shell layer 201 and a tube layer 202 from inside to outside, the shell layer 201 is connected with a cooling water pipe 203, the tube layer 202 is connected with an evaporation pipe 204 and a reflux pipe 205, the tube layer 202 is connected with the extraction tank 1 through the evaporation pipe 204 and the reflux pipe 205 to form a circulation loop, so that the evaporation of the heated process liquid is realized through the evaporation pipe 204, and the condensed liquid is returned to the extraction tank 1 through the reflux pipe 205.

[0045] In the condenser 2, the liquid medicine passes through the tube layer 202, and the cooling water passes through the shell layer 201. The surface of the tube layer 202 is round and smooth, which is easy to clean. The cooling water can be normal temperature cooling water, process refrigeration water, or a suitable temperature range to meet the control requirements according to the production process requirements.

[0046] In a specific embodiment, as shown in the accompanying drawings, Figure 1 As shown, the evaporation pipe 204 is connected with the evaporation port 15 of the extraction tank 1.

[0047] In a specific embodiment, the material of the cooling water pipe 203 is carbon steel or stainless steel, which can be customized and installed according to requirements.

[0048] In the above system, the top of the extraction tank 1 is provided with a sight glass lamp and a sight window for observing the state in the extraction tank; a plurality of temperature detection ports are arranged on the side wall of the extraction tank 1 for online temperature real-time monitoring to meet the temperature control requirements of production and cleaning.

[0049] In the above system, as shown in the accompanying drawings, Figure 1 As shown, the bottom of the extraction tank 1 is provided with a pot door 22. The pot door 22 is connected with a liquid outlet and a circulation unit, through which the circulation or liquid outlet of the liquid medicine is realized, and the production control is completed.

[0050] In a specific embodiment, a filter plate is arranged on the pot door 22 for preliminary filtration of the production process residue.

[0051] In a further preferred embodiment, the filter plate is sequentially provided with a mesh plate layer and a screen mesh layer in the direction away from the pot door, the size of the clamping strip hole of the mesh plate on the mesh plate layer is 2*10mm, and the mesh hole diameter of the screen mesh on the screen mesh layer is 60-80 meshes.

[0052] In a further preferred embodiment, the shape of the mesh plate on the mesh plate layer is circular or strip-shaped.

[0053] In a further preferred embodiment, the materials of the mesh plate layer and the screen mesh layer are both stainless steel materials, specifically SUS304.

[0054] In the above system, as shown in the accompanying drawings, Figure 1As shown, the lower part of the extraction tank body 1 is also connected with a compressed air pipe 23, and the compressed air pipe 23 is provided with a compressed air valve 24 for controlling the supply of compressed air.

[0055] In a specific embodiment, the material of the compressed air pipe 23 is stainless steel. The compressed air pipe 23 is close to the valve control end, and a polyurethane hose can be selected for flexible use.

[0056] In the above system, as shown in the drawings, Figure 1 The filter 6 is connected with the extraction tank body 1 through a liquid outlet pipe 25.

[0057] In a specific embodiment, as shown in the drawings, Figure 1 The filter 6 is connected with the pot door 22 of the extraction tank body 1 through a liquid outlet pipe 25. The position where the liquid outlet pipe 25 is connected with the pot door 22 is the lowest point of the pot door 22.

[0058] In a specific embodiment, as shown in the drawings, Figure 1 The liquid outlet pipe 25 is provided with a first liquid outlet valve 26.

[0059] In a further preferred embodiment, as shown in the drawings, Figure 1 The position of the filter 6 is lower than the pot door 22, which does not affect the opening of the pot door 22.

[0060] In the above system, as shown in the drawings, Figure 1 The number of the filter 6 is two, and the two filters 6 are connected in parallel.

[0061] The two filters 6 are double filters with a filter switching valve in the middle. In the case of blockage, one filter can be switched to the other for filtering, and the blocked filter can be disassembled and cleaned without affecting the liquid outlet.

[0062] In the above system, the material of the filter 6 is stainless steel, specifically SUS304 or 316 stainless steel.

[0063] In the above system, as shown in the drawings, Figure 2As shown, the filter 6 comprises a main body 61, the main body 61 is hollow and detachably sleeved with a filter cylinder 62, the filter cylinder 62 is hollow and detachably sleeved with a screen 63, the main body 61 is provided with a first blocking ring 64, the filter cylinder 62 is provided with a second blocking ring 65 at the top, the screen 63 is provided with an outer edge 66 extending outward at the top, the upper and lower parts of the outer edge 66 are respectively provided with a third blocking ring 67 and a fourth blocking ring 68 for fixing the outer edge 66 between the third blocking ring 67 and the fourth blocking ring 68, when the main body 61, the filter cylinder 62 and the screen 63 are sleeved in sequence, the first blocking ring 64, the second blocking ring 65, the third blocking ring 67 and the fourth blocking ring 68 are matched and detachably connected from bottom to top to connect the main body 61, the filter cylinder 62 and the screen 63.

[0064] In a specific embodiment, the main body 61 and the filter cylinder 62 are made of stainless steel.

[0065] In a specific embodiment, the screen 62 is made of nylon. It can further filter small drug residues.

[0066] In a specific embodiment, the filter cylinder 62 is provided with a plurality of screen holes, and the diameter of the screen holes is 2-5mm.

[0067] In a specific embodiment, the mesh diameter of the screen 63 is 80-120 mesh.

[0068] The filter 6 has a filter cylinder 62 made of stainless steel with screen holes, and the inside of the cylinder can be lined with nylon screens 63 of different specifications according to product requirements. Through the clever sealing design between the layers, the impurities in the medicinal liquid are effectively filtered. After the improvement of the filter 6, the sealing between the components is enhanced, and the required specification of the screen 63 can be flexibly selected to achieve effective filtration of the medicinal liquid.

[0069] In a specific embodiment, as shown, Figure 2 The first blocking ring 64 is provided with a plurality of first fixing members 69, the second blocking ring 65 is provided with a plurality of first fixing holes 610, the third blocking ring 67 is provided with a plurality of second fixing holes 611 and a plurality of third fixing holes 612, and the fourth blocking ring 68 is provided with a plurality of fourth fixing holes 613 and a plurality of second fixing members 614. The first fixing holes 610, the second fixing holes 611 and the fourth fixing holes 613 correspond one by one and are sleeved on the first fixing members 69 from bottom to top, and the third fixing holes 612 and the second fixing members 614 correspond one by one and are sleeved on the second fixing members 614.

[0070] In a further preferred embodiment, the first fixing members 69 and the second fixing members 614 are both conventional fixing bolts.

[0071] In a further preferred embodiment, the number of the first fixing member 69, the second fixing member 614, the first fixing hole 610, the second fixing hole 611, the third fixing hole 612 and the fourth fixing hole 613 is 3-6, preferably 4.

[0072] In a further preferred embodiment, as shown in Figure 2 the second fixing hole 611 is spaced apart from the third fixing hole 612, and the fourth fixing hole 613 is spaced apart from the second fixing member 614.

[0073] In a further preferred embodiment, the first fixing member 69 and the second fixing member 614 are fastened by nuts. The nuts are conventional dovetail nuts.

[0074] In a specific embodiment, as shown in Figure 2 the top surface of the fourth retaining ring 68 is provided with a handle 615 for disassembling the screen 63.

[0075] In a further preferred embodiment, the number of the handle 615 is 2-4, preferably 2.

[0076] In a further preferred embodiment, as shown in Figure 2 the two handles 615 are symmetrically arranged.

[0077] In a specific embodiment, the first retaining ring 64 is embedded with a first sealing strip, the second retaining ring 65 is embedded with a second sealing strip, and the fourth retaining ring 68 is embedded with a third sealing strip.

[0078] The above structure can realize effective sealing between the filter 6 body 61 and the filter cartridge 62 and the screen 63, and ensure that the solid impurities in the liquid can be effectively filtered.

[0079] In the above system, as shown in Figure 1 the filter 6 is further connected with a second vent pipe 27, and the second vent pipe 27 is provided with a second vent valve 26.

[0080] In the above system, as shown in Figure 1 the buffer tank 4 is located below the filter 6, and the buffer tank 4 is connected with the filter 6 through a first communication pipe 29, and the first communication pipe 29 is provided with a discharge valve 42.

[0081] In a specific embodiment, as shown in Figure 1 one end of the first communication pipe 29 is connected with the top of the buffer tank 4, and the other end of the first communication pipe 29 is connected with the bottom of the filter 6.

[0082] The buffer tank 4 is located below the filter 6 with a certain height difference, and the liquid flows into the top of the buffer tank 4 and flows out from the bottom.

[0083] In a specific embodiment, as shown in the drawings, the buffer tank 4 is further connected with a third vent pipe 40, and the third vent pipe 40 is provided with a third vent valve 41. Figure 1

[0084] In a specific embodiment, as shown in the drawings, the buffer tank 4 is further connected with a third vent pipe 40, and the third vent pipe 40 is provided with a third vent valve 41. Figure 1

[0085] In the above system, the material of the buffer tank 4 is stainless steel, specifically SUS304 or 316 stainless steel. The volume of the buffer tank 4 is generally selected to meet the use requirements according to the capacity of the variable frequency pump 5 after the tank. More preferably, for the conventional situation, the volume of 500L is more appropriate.

[0086] In the above system, as shown in the drawings, the buffer tank 4 is connected with the variable frequency pump 5 through the second communication pipe 31. Figure 1

[0087] In a specific embodiment, as shown in the drawings, one end of the second communication pipe 31 is connected with the bottom of the buffer tank 4, and the other end of the second communication pipe 31 is connected with the variable frequency pump 5. Figure 1 In the above system, as shown in the drawings, the variable frequency pump 5 is further connected with an output pipe 32.

[0088] Figure 1 In a specific embodiment, as shown in the drawings, the second communication pipe 31 is provided with a second liquid outlet valve 33, and the output pipe 32 is provided with a start-stop valve 34.

[0089] Figure 1 In a further preferred embodiment, the second liquid outlet valve 33 and the start-stop valve 34 are in communication connection with the on-line liquid level meter 30 through the DCS control part 7. That is, the on-line liquid level meter 30 is set in safety interlocking with the start-stop valve 34 and the second liquid outlet valve 33 of the variable frequency pump 5. In the case of being lower than a certain liquid level, the variable frequency pump 5 is stopped, and in the case of being higher than a certain liquid level, the second liquid outlet valve 33 is stopped. Through this interlocking, the service life of the variable frequency pump 5 can be ensured, and the situation of full tank overflow or empty beating of the variable frequency pump 5 can be avoided.

[0090] In the above system, as shown in the drawings, the variable frequency pump 5 is further connected with an output pipe 32.

[0091] In the above system, as shown in the drawings, the variable frequency pump 5 is further connected with an output pipe 32. Figure 1 ​​​​​As shown, the variable frequency pump 5 is also connected with a liquid circulating pipe 35, which is connected with the extraction tank 1, and the liquid circulating pipe 35 is also connected with a switching pipe 36, which is connected with the liquid circulating pipe 35 and the cleaning water pipe 18. The variable frequency pump 5 adjusts the pressure to control the production process liquid backflow circulation to meet the production demand, and to control the cleaning process cleaning water circulation to pressurize and start the three-dimensional rotating cleaning nozzle, thereby realizing the control of the production process and the cleaning process.

[0092] In a specific embodiment, as shown in Figure 1 The liquid circulating pipe 35 is provided with a circulating valve 37 and a production valve 38 in sequence along the backflow direction of the extraction tank 1, and the switching pipe 36 is provided with a switching hand valve 39 for production / cleaning switching.

[0093] In a further preferred embodiment, as shown in Figure 1 The circulating valve 37 is arranged near the output end of the variable frequency pump 5, and the production valve 38 is arranged near the input end of the extraction tank 1.

[0094] In a specific embodiment, as shown in Figure 1 The communication position of the switching pipe 36 with the liquid circulating pipe 35 and the cleaning water pipe 18 is located at the end of the production valve 38 and the cleaning water valve 21 away from the extraction tank 1.

[0095] The switching hand valve 21 connects the cleaning water pipe 18 and the liquid circulating pipe 35, and through the opening and closing of the switching hand valve 21, the circulation of the production process liquid and the circulation of the cleaning process cleaning water are switched, thereby meeting different purposes.

[0096] Specifically, when producing, the production valve 38 is opened, the switching hand valve 39 is closed, and the liquid is normally circulated through the circulating pipe; when cleaning, the production valve 39 is closed, the switching hand valve 21 and the cleaning water valve 21 are opened, the cleaning water is pressurized through the liquid circulating pipe 35 by the variable frequency pump 5, and enters the cleaning water pipe 18 through the opened switching hand valve 39 and cleaning water valve 18, and the three-dimensional rotating cleaning nozzle 3 is opened, thereby realizing the circulation online cleaning.

[0097] In the above system, as shown in Figure 1 The variable frequency pump 5 is a conventional variable frequency pump, which can be directly purchased from a corresponding pipe pump supplier, and the type can be selected according to the use environment, and different specifications can be selected according to the actual use pressure and lift.

[0098] The variable frequency pump 5 can ensure that the cleaning nozzle 3 used for cleaning after the pump can be normally started, the variable frequency pump 5 can be selected according to the use environment, and different specifications can be selected according to the actual use pressure and lift.

[0099] In the above system, the DCS control part 7 is also respectively connected with the frequency conversion pump 5, the first steam regulating valve 105, the first steam pressure sensor 106, the second steam regulating valve 114, the second steam pressure sensor 115, the first steam bypass valve 116, the first steam trap valve 121, the second steam bypass valve 122, the second steam trap valve 134, the third steam bypass valve 135, the first vent valve 19, the solvent valve 20, the cleaning water valve 21, the compressed air valve 23, the first liquid outlet valve 26, the discharge valve 42, the second vent valve 28, the online liquid level meter 30, the third vent valve 41, the second liquid outlet valve 33, the start-stop valve 34, the circulation valve 37, the production valve 38, and the switching hand valve 39 for providing control and feedback instructions. The DCS control part 7 is respectively connected with each valve for controlling the opening or closing of the valve, setting the parameters of each production and cleaning, thereby controlling the entire production and cleaning process.

[0100] In the above system, as shown in Figure 1 the DCS control part 7 is a commonly used controller, and those skilled in the art understand that the calculation, comparison, judgment, and output instruction process of the controller can be realized by using an integrated circuit module, a programmable logic device, other hardware, or installing a corresponding software module. Specifically, it is a Siemens PCS7 series editable process control system. The controller is externally connected with a power supply.

[0101] In the above system, the valve can be an electromagnetic valve or a pneumatic valve. The electromagnetic valve is a commonly used electromagnetic valve, specifically a Yadea brand electromagnetic valve. The pneumatic valve is a commonly used pneumatic valve, specifically a Spiraxsarco brand pneumatic valve.

[0102] In the above system, the sensor, including the first steam pressure sensor 106, the second steam pressure sensor 115, the online liquid level meter 30, etc., is a commonly used sensor. Specifically, the pressure sensor can select a pressure sensor produced by e+H company, and the online liquid level meter 30 can select a corresponding instrument produced by e+H, Emerson, etc.

[0103] In the above system, as shown in Figure 1 the frequency conversion control part 8 is a commonly used frequency converter. The frequency converter can be directly purchased from the frequency converter manufacturer according to the parameters of the frequency conversion pump, specifically a Danfoss VLT series frequency converter, and a suitable model is selected according to the actual application requirement, such as FC051. The frequency conversion control part 8 can realize the control of the circulation amount of the liquid medicine in the production process and the control of the circulation water pressure boost in the cleaning process by adjusting the frequency of the frequency conversion pump 5, thereby meeting the demand switching of the two modes of production and cleaning, effectively balancing the production demand and cleaning demand, and realizing the multi-purpose function.

[0104] The following will be described in combination withFigures 1-2 The utility model discloses a kind of extraction tank production filtering and cleaning systems, which is used for extracting traditional Chinese medicine.

[0105] After the operator obtains the extraction tank production filtering and cleaning system as shown in Figures 1-2 , the production process and the cleaning process can be carried out respectively.

[0106] In the production process, the cover plate of the feeding port 14 on the extraction tank body 1 is opened, and the traditional Chinese medicinal materials are fed from the feeding port 14. After the cover plate is closed, the solvent valve 20 on the solvent pipe 17 is opened under the instruction of the DCS control part of the control unit, and a set amount of extraction solvent is added. Then, the solvent valve 20 is closed. Under the instruction 8 of the DCS control part of the control unit, the first steam regulating valve 105 and the first steam pressure sensor 106 on the first steam input main pipe 10 can be opened, and steam is introduced into the upper jacket 91, the lower jacket 92, and the pot door jacket 93 through the first steam input pipe 10 to heat them simultaneously for the extraction of high liquid level. At the same time, the heating temperature is monitored by the first steam pressure sensor 106. Alternatively, the second steam regulating valve 114 and the second steam pressure sensor 115 on the second steam input main pipe 111 can be opened, and steam is introduced into the lower jacket 91 and the pot door jacket 92 through the second steam input pipe 11 to heat them simultaneously for the extraction of medium and low liquid level. At the same time, the heating temperature is monitored by the second steam pressure sensor 115. In addition, under the instruction 7 of the DCS control part of the control unit, the first steam drain valve 121 on the first steam drain pipe 12 can be opened to drain the steam condensate generated in the upper jacket 91 during the production process. Under the instruction 7 of the DCS control part of the control unit, the second steam drain valve 134 on the second steam drain main pipe 131 can also be opened to drain the steam condensate generated in the lower jacket 92 and the pot door jacket 93 during the production process through the second steam drain pipe 13. Under the above instruction 7 of the DCS control part, the decoction of traditional Chinese medicinal materials is realized through the quantitative control of the first steam input pipe 10, the second steam input pipe 11, the first steam drain pipe 12, and the second steam drain pipe 13. In addition, cooling water is input into the shell layer 201 of the condenser 2 through the cooling water pipe system, and then the solvent in the tube layer 202 of the condenser 2, which is input through the evaporation pipe 204, is cooled by the cooling water and then condensed and returned to the flow pipe 205.

[0107] Under the instruction of the DCS control part 7, the first liquid outlet valve 26 is opened to make the extracted medicinal liquid pass through the pot door 22, the mesh plate layer of the filter plate, the screen layer, and then input into the filter through the liquid outlet pipe. After the medicinal liquid passes through the filter cartridge 62 with a screen hole diameter of 4 mm and the screen 63 with a mesh hole diameter of 100 mesh in the main body 61 of the filter 6, the medicinal liquid filtration is realized. During the filtration of the filter 6, the solid impurities in the medicinal liquid can be effectively filtered due to the setting of multiple layers of retaining rings and sealing strips.

[0108] Then, through the DCS control part 7 instruction, open the frequency conversion control part 8, the second liquid outlet valve 33, the circulation valve 37, the production valve 38, the variable frequency pump 5, through the frequency conversion control part 8 to control the variable frequency pump 5, the liquid medicine is circulated back to the extraction tank body 1 through the second communication pipe 31, the liquid medicine circulation pipe 35, to ensure the uniformity of the liquid medicine extraction. After the extraction is completed, through the DCS control part 7 instruction, close the circulation valve 37, the production valve 28, open the start-stop valve 34, the liquid medicine is output to the subsequent storage tank through the output pipe, and subsequent processing is carried out.

[0109] After the production process is completed, the cleaning process is carried out. In the cleaning process, the pot door 22 of the extraction tank body 1 is opened to unload the dregs, and then the pot door 22 is closed. The cover plate of the feeding port 14 on the extraction tank body 1 is opened, and the alkali solution is added through the feeding port 14. The alkali solution concentration is 30% liquid alkali aqueous solution. Under the instruction of the DCS control part 7, open the cleaning water valve 21, and input the drinking water into the extraction tank body 1 through the cleaning water pipe, and the drinking water is quantitatively added to prepare the alkali solution with the required appropriate concentration. Through the DCS control part instruction, open the first liquid outlet valve 26, the discharge valve 42, the second liquid outlet valve 33, make the alkali solution pass through the pot door 22, and then pass through the filter plate net plate layer and screen layer, and then input the filter 6 through the output pipe 32, and input the buffer tank 4 through the second communication pipe 31. Under the instruction of the DCS control part 7, open the frequency conversion control part 8, the circulation valve 37, the switching hand valve 39, the variable frequency pump 5, the cleaning nozzle 3, through the frequency conversion control part 8 to control the frequency of the variable frequency pump 5 (increase the adjustment), make the alkali solution pass through the second communication pipe 31, the liquid medicine circulation pipe 35, the switching pipe 36, the cleaning water pipe 18, and then pass through the three-dimensional rotating cleaning nozzle 3 to clean the extraction tank body 1.

[0110] When cleaning, under the instruction of the DCS control part 7, by quantitative control of the first steam input pipe 10, the second steam input pipe 11, the first steam drain pipe 12 and the second steam drain pipe 13, the temperature is raised to the set cleaning temperature, the frequency conversion pump 5 is pressurized to 0.5 MPa, the three-dimensional rotating cleaning nozzle 3 is started, the lye is sprayed out through the four water outlets under pressure, is rotated and sprayed in the tank, under the impact of the larger water pressure, the dirt in the tank can be well cleaned, at the same time, because the three-dimensional rotating spray can cover 360° without dead angle, thus the cleaning effect is better than that of soaking cleaning; in addition, the circulating cleaning only needs to meet the circulating lye, and compared with the soaking cleaning, about 2 / 3 of the water consumption can be saved, 2 / 3 of the liquid lye of 30% concentration can be saved in single cleaning, the heating time is greatly shortened, and the energy saving effect is good. After the cleaning is completed, the circulating valve 37, the switching hand valve 39, the cleaning water valve 18 and the cleaning nozzle 3 are closed under the instruction of the DCS control part 7, the start-stop valve 34 is opened, and the waste liquid after cleaning is output through the output pipe 32.

[0111] In summary, the extraction tank production filtering and cleaning system provided by the utility model improves the filtering effect of the liquid medicine under the condition of ensuring the stability of the original extraction process production, and simultaneously realizes online dynamic cleaning. The above embodiments only exemplarily illustrate the principle and effects of the utility model, and are not used for limiting the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A filter cleaning system for extraction tank production, characterized in that, The application relates to an extraction tank unit, an outflow and circulation unit and a control unit. The extraction tank unit comprises an extraction tank body (1) and a condenser (2), the extraction tank body (1) is provided with a cleaning nozzle (3), and the extraction tank body (1) and the condenser (2) are connected to form a circulation loop so that extraction liquid in the extraction tank body (1) is heated, evaporated and condensed and backflows. The outflow and circulation unit comprises a buffer tank (4), a variable frequency pump (5) and at least one filter (6), the filter (6) is connected to the buffer tank (4) and the extraction tank body (1) respectively, and the variable frequency pump (5) is connected to the buffer tank (4), the extraction tank body (1) and the cleaning nozzle (3) respectively. The control unit comprises a DCS control part (7) and a variable frequency control part (8), and the variable frequency control part (8) is connected to the DCS control part (7) and the variable frequency pump (5) in communication.

2. The extraction tank production filter cleaning system of claim 1, wherein, The extraction tank body (1) is provided with a jacket; the jacket comprises an upper jacket (91), a lower jacket (92) and a pot door jacket (93), the upper jacket (91) is arranged on the upper portion of the outer side wall of the extraction tank body (1), the lower jacket (92) is arranged on the lower portion of the outer side wall of the extraction tank body (1), and the pot door jacket (93) is arranged on the bottom of the extraction tank body (1).

3. The extraction tank production filter cleaning system of claim 2, wherein, The jacket comprises any one or more of the following conditions: A1 the upper jacket (91), the lower jacket (92) and the pot door jacket (93) are respectively connected with a first steam input pipe (10), the first steam input pipe (10) comprises a first steam input main pipe (101), a first steam input first branch pipe (102), a first steam input second branch pipe (103) and a first steam input third branch pipe (104), one end of the first steam input first branch pipe (102), the first steam input second branch pipe (103) and the first steam input third branch pipe (104) is connected with the first steam input main pipe (101) respectively, the other end of the first steam input first branch pipe (102) is connected with the upper jacket (91), the other end of the first steam input second branch pipe (103) is connected with the lower jacket (92), the other end of the first steam input third branch pipe (104) is connected with the pot door jacket (93), and the first steam input main pipe (101) is sequentially provided with a first steam regulating valve (105) and a first steam pressure sensor (106) in the steam input direction. A2The lower jacket (92) and the pot door jacket (93) are respectively communicated with a second steam input pipe (11), the second steam input pipe (11) comprises a second steam input main pipe (111), a second steam input first branch pipe (112) and a second steam input second branch pipe (113), one end of the second steam input first branch pipe (112) and the second steam input second branch pipe (113) is communicated with the second steam input main pipe (111) respectively, the other end of the second steam input first branch pipe (112) is communicated with the lower jacket (92), the other end of the second steam input second branch pipe (113) is communicated with the pot door jacket (93), the second steam input main pipe (111) is provided with a second steam regulating valve (114) and a second steam pressure sensor (115) in sequence along the steam input direction, the second steam regulating valve (114) is parallelly connected with a first steam bypass valve (116), the first steam bypass valve (116) is communicated with the second steam input main pipe (111) through a first bypass branch pipe (117); A3The upper jacket (91) is further communicated with a first steam and water drainage pipe (12), the first steam and water drainage pipe (12) is provided with a first steam and water drainage valve (121), the first steam and water drainage valve (121) is parallelly connected with a second steam bypass valve (122), the second steam bypass valve (122) is communicated with the first steam and water drainage pipe (12) through a second bypass branch pipe (123); A4The lower jacket (92) and the pot door jacket (93) are further communicated with a second steam and water drainage pipe (13), the second steam and water drainage pipe (13) comprises a second steam and water drainage main pipe (131), a second steam and water drainage first branch pipe (132) and a second steam and water drainage second branch pipe (133), one end of the second steam and water drainage first branch pipe (132) and the second steam and water drainage second branch pipe (133) is communicated with the second steam and water drainage main pipe (131) respectively, the other end of the second steam and water drainage first branch pipe (132) is communicated with the lower jacket (92), the second steam and water drainage second branch pipe (133) is communicated with the pot door jacket (93), the second steam and water drainage main pipe (131) is provided with a second steam and water drainage valve (134), the second steam and water drainage valve (134) is parallelly connected with a third steam bypass valve (135), the third steam bypass valve (135) is communicated with the second steam and water drainage main pipe (131) through a third bypass branch pipe (136).

4. The extraction tank production filter cleaning system of claim 1, wherein, The extraction tank body (1) comprises any one or more of the following conditions: B1The top of the extraction tank body (1) is provided with a feeding port (14) and an evaporation port (15), the top of the extraction tank body (1) is further communicated with a first vent pipe (16), a solvent pipe (17) and a cleaning water pipe (18), the cleaning water pipe (18) is communicated with a cleaning nozzle (3); B2The bottom of the extraction tank body (1) is provided with a pot door (22), the pot door (22) is provided with a filter plate; B3 The lower part of the extraction tank body (1) is also connected with a compressed air pipe (23), and the compressed air pipe (23) is provided with a compressed air valve (24).

5. The extraction tank production filter cleaning system of claim 4, wherein, In B1, the first vent pipe (16) is provided with a first vent valve (19), the solvent pipe (17) is provided with a solvent valve (20), and the cleaning water pipe (18) is provided with a cleaning water valve (21).

6. The extraction tank production filter cleaning system of claim 1, wherein, The water outlet hole of the cleaning spray head (3) is 2-4; the working pressure of the cleaning spray head (3) is 0.4-1.0 MPa.

7. The extraction tank production filter cleaning system of claim 1, wherein, The condenser (2) is sequentially provided with a shell layer (201) and a pipe layer (202) from inside to outside, the shell layer (201) is connected with a cooling water pipe (203) outside, the pipe layer (202) is connected with an evaporation pipe (204) and a reflux pipe (205) outside, and the pipe layer (202) is connected with the extraction tank body (1) through the evaporation pipe (204) and the reflux pipe (205) to form a circulation loop.

8. The extraction tank production filter cleaning system of claim 1, wherein, Any one or more of the following conditions is included: C1 The filter (6) is connected with the extraction tank body (1) through a liquid outlet pipe (25); C2 The number of the filter (6) is 2, and the two filters (6) are connected in parallel; C3 The filter (6) comprises a main body (61), the main body (61) is hollow and detachably sleeved with a filter cartridge (62) inside, the filter cartridge (62) is hollow and detachably sleeved with a screen (63) inside, the main body (61) is provided with a first blocking ring (64) inside, the filter cartridge (62) is provided with a second blocking ring (65) on the top, the screen (63) is provided with an outer edge ring (66) extending outward on the top, and the upper and lower parts of the outer edge ring (66) are respectively provided with a third blocking ring (67) and a fourth blocking ring (68) for fixing the outer edge ring (66) between the third blocking ring (67) and the fourth blocking ring (68), when the main body (61), the filter cartridge (62) and the screen (63) are sequentially sleeved, the first blocking ring (64), the second blocking ring (65), the third blocking ring (67) and the fourth blocking ring (68) are sequentially matched and detachably connected from bottom to top to connect the main body (61), the filter cartridge (62) and the screen (63); C4 The filter (6) is also connected with a second vent pipe (27) outside, and the second vent pipe (27) is provided with a second vent valve (28); C5 The buffer tank (4) is located below the filter (6), the buffer tank (4) is connected with the filter (6) through a first connecting pipe (29), and the first connecting pipe (29) is provided with a discharge valve (42); C6 The buffer tank (4) is connected with the variable frequency pump (5) through a second connecting pipe (31); C7 The variable frequency pump (5) is also connected with an output pipe (32); C8 The variable frequency pump (5) is also connected with a liquid circulating pipe (35), the liquid circulating pipe (35) is connected with the extraction tank body (1) and the variable frequency pump (5) respectively, the liquid circulating pipe (35) is also connected with a switching pipe (36), and the switching pipe (36) is connected with the liquid circulating pipe (35) and the cleaning water pipe (18) respectively.

9. The extraction tank production filter cleaning system of claim 8, wherein, Any one or more of the following conditions is also included: C11 In C1, the filter (6) is connected with the kettle door (22) of the extraction tank body (1) through the liquid outlet pipe (25); C12 In C1, the liquid outlet pipe (25) is provided with a first liquid outlet valve (26); C31 In C3, the filter cartridge (62) is provided with a plurality of screen holes, and the diameter of the screen holes is 2-5 mm; C32 In C3, the mesh size of the screen mesh (63) is 80-120 mesh; C33 In C3, the first blocking ring (64) is provided with a plurality of first fixing members (69), the second blocking ring (65) is provided with a plurality of first fixing holes (610), the third blocking ring (67) is provided with a plurality of second fixing holes (611) and a plurality of third fixing holes (612), and the fourth blocking ring (68) is provided with a plurality of fourth fixing holes (613) and a plurality of second fixing members (614), the first fixing holes (610), the second fixing holes (611), and the fourth fixing holes (613) correspond one by one and are sequentially sleeved on the first fixing members (69) from bottom to top, and the third fixing holes (612) and the second fixing members (614) correspond one by one and are sleeved on the second fixing members (614); C34 In C3, the top surface of the fourth blocking ring (68) is provided with a handle (615); C35 In C3, the first blocking ring (64) is provided with a first sealing strip, the second blocking ring (65) is provided with a second sealing strip, and the fourth blocking ring (68) is provided with a third sealing strip; C51 In C5, one end of the first communication pipe (29) is connected with the top of the buffer tank (4), and the other end of the first communication pipe (29) is connected with the bottom of the filter (6); C52 In C5, the buffer tank (4) is provided with an online liquid level meter (30); C53 In C5, the buffer tank (4) is further connected with a third vent pipe (40), and the third vent pipe (40) is provided with a third vent valve (41); C61 In C6, one end of the second communication pipe (31) is connected with the bottom of the buffer tank (4), and the other end of the second communication pipe (31) is connected with the variable frequency pump (5); C71 In C7, the second communication pipe (31) is provided with a second liquid outlet valve (33), and the output pipe (32) is provided with a start-stop valve (34); C81 In C8, the liquid circulating pipe (35) is provided with a circulating valve (37) and a production valve (38) in sequence along the direction of the backflow extraction tank body, and the switching pipe (36) is provided with a switching hand valve (39).

10. The filter cleaning system for extraction tank production according to any one of claims 1-9, characterized in that, The DCS control part (7) is further in communication connection with the variable frequency pump (5), the first steam regulating valve (105), the first steam pressure sensor (106), the second steam regulating valve (114), the second steam pressure sensor (115), the first steam bypass valve (116), the first steam trap valve (121), the second steam bypass valve (122), the second steam trap valve (134), the third steam bypass valve (135), the first vent valve (19), the solvent valve (20), the cleaning water valve (21), the compressed air valve (24), the first liquid outlet valve (26), the discharge valve (42), the second vent valve (28), the online liquid level meter (30), the third vent valve (41), the second liquid outlet valve (33), the start-stop valve (34), the circulation valve (37), the production valve (38), and the switching hand valve (39), respectively.

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