Ferrous fumarate drying apparatus
By installing a pull-out slider and a wind-vibrating ball at the bottom of the drying tray, the shaking and tapping action of the wind-vibrating ball is used to close the gaps between crystals, thus solving the problem of crystal powder scattering and improving cost-effectiveness.
Patent Information
- Application Number
- CN202310376544.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-04-10
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2043-04-10
AI Technical Summary
In the existing process of drying ferrous fumarate, the crystal powder is easily lost with the airflow, resulting in a complicated process and high cost.
A pull-out slider and a vibrating ball are installed at the bottom of the drying tray. Hot steam pushes the vibrating ball to shake on the drying tray. The knocking and impacting action of the vibrating ball closes the gaps between crystals, preventing crystal powder from escaping. The synchronous operation of the fan and the suction pump is adjusted by the controller.
It effectively reduces crystal powder loss, simplifies the process, and lowers production costs.
Smart Images
Figure CN116396161B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of ferrous fumarate preparation technology, specifically relating to a ferrous fumarate drying device. Background Technology
[0002] Ferrous fumarate is a reddish-brown solid powder. It can prevent iron-deficiency anemia in various animals and, after refining, can be used as a food additive.
[0003] The process of ferrous fumarate involves adding fumaric acid to an aqueous solution of sodium hydroxide or sodium carbonate to produce sodium fumarate, then adding ferrous sulfate heptahydrate and heating the reaction. The reaction solution is then cooled, filtered, washed, and dried to obtain the ferrous fumarate product. However, there are certain defects in the drying process.
[0004] After the mixed mother liquor is separated into solid and liquid components by a centrifuge, the mother liquor is sent back to the reactor to continue the reaction, while the crystals are sent to a dryer for drying. When airflow drying or vacuum drying is used, the crystals gradually dry as the drying process progresses, and the crystal powder attached to the crystals detaches and is lost with the airflow. Therefore, the airflow is usually passed through a cyclone separator again to separate the crystal powder and recover it. The process is cumbersome and the cost is high. Based on this, our company has developed a production process and manufacturing equipment for ferrous fumarate to replace the existing technology. Summary of the Invention
[0005] Purpose of the invention: The purpose of this invention is to provide a ferrous fumarate drying device to solve the technical problem of crystal powder escaping during the crystal drying process.
[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:
[0007] A process for producing ferrous fumarate, the specific steps of which are as follows:
[0008] Step 1: Add fumaric acid to the first reaction vessel and add water to the first reaction vessel. Then add sodium carbonate to the first reaction vessel and heat to 75-85℃ to react until no bubbles are generated in the filtrate. Filter the filtrate through the first filter to remove visible impurities and set it aside for later use.
[0009] Step 2: Add ferrous sulfate and water to a dissolving vessel and dissolve at a temperature of 70-80℃. Then, filter the solution through a second filter until no visible impurities are visible.
[0010] Step 3: Add the filtrate and solution prepared in Step 1 and Step 2 to the second reaction vessel. The reaction temperature in the second reaction vessel is 90-95℃, and this temperature is maintained for 1 hour until the solution turns a clear brick red color.
[0011] Step 4: Cool the second reactor to below 40°C. After a large number of crystals are produced in the mixed solution, send the solid-liquid mixture to a centrifuge for solid-liquid separation. The separated mother liquor is sent back to the second reactor for further reaction.
[0012] Step 5: After drying the separated crystals, send them to a drying equipment and then to a screening machine to obtain the ferrous fumarate product.
[0013] A ferrous fumarate drying device includes a set of symmetrically arranged balance plates and a drying box fixedly installed on the upper part of the balance plates;
[0014] The drying oven is composed of multiple side panels spliced together, and the drying oven has openings at both ends. One end of the opening is rotatably connected to the door panel, and the other end of the opening is detachably and fixedly connected to the air box.
[0015] The air box contains a fan that blows air towards an opening on the other side, and the air box has multiple hot steam inlets.
[0016] An exhaust passage is provided, which is installed in the drying chamber.
[0017] The drying chamber has multiple symmetrical corner supports installed on its inner wall. The corner supports are arranged in groups of four to hold the drying trays. The drying trays have a sliding groove at the bottom, and a wind-vibration assembly is installed in the sliding groove.
[0018] Furthermore, the opening of the drying oven is designed in an L-shape with a stepped structure, and a sealing strip is installed at the step to ensure dust prevention after closure.
[0019] Furthermore, the exhaust channel is connected to a suction pump, which draws gas from inside the drying chamber.
[0020] Furthermore, a controller is also installed on the drying chamber, which is used to adjust the output power of the fan and the suction pump.
[0021] Furthermore: the wind vibration assembly includes a slider of the same length as the groove, and the lower part of the slider is connected to the wind vibration ball via a guide rope.
[0022] By adopting the above technical solution: after solid-liquid separation, the product is sent to a dryer for drying. However, when using airflow drying or vacuum drying, the crystals gradually dry as the drying process progresses, and the crystal powder attached to the crystals detaches and is lost with the airflow. Therefore, the airflow is usually passed through a cyclone separator again to separate and recover the crystal powder. The process is complicated and the cost is high.
[0023] The core improvement of this invention lies in the following: by using a pull-out slider at the bottom of the drying tray and installing a vibrating ball at the bottom of the slider, it should be noted that the vibrating ball should be completely hidden within the groove depth of the slide. During use, the crystals after solid-liquid separation are placed on the drying tray, and multiple drying trays are selectively placed on the corner seat. A suitable weight of vibrating ball is selected and installed on the slider. The slider is installed in the slide groove, and the door is closed for sealing. Then, hot steam is sent into the air box through the hot steam interface. The controller controls the fan and the suction pump to start synchronously. The fan blows the hot steam to one side of the drying tray, causing the vibrating ball to shake.
[0024] The wind-vibrating ball has several working modes during the shaking process. The first mode is: when the wind-vibrating ball moves in the initial state, it moves in a single direction. Therefore, when the wind-vibrating ball swings at a large amplitude, it can hit the upper wall of the groove. During the hitting process, the vibration is transmitted to the drying tray, which closes the gap between the crystals during the drying process, causing the crystals to sink and thus covering most of the crystal powder at the bottom of the crystals, preventing the crystal powder from being scattered with the drying wind.
[0025] Second form of wind-vibrated ball: Due to the unavoidable natural laws, the wind forces on multiple wind-vibrated balls are different, resulting in different swing amplitudes of the wind-vibrated balls. Furthermore, due to the above reasons, the swing direction and swing amplitude will be different during the swing process. The applicant has created a motion description table between the three wind-vibrated balls to illustrate that in any state, they can generate amplitude, thereby closing the gap between crystals and covering the crystal powder. When two wind-vibrated balls collide with each other, they generate amplitude, thereby transmitting and achieving the effect of the first form.
[0026] Humidity and temperature sensors can also be installed inside the drying chamber. The humidity sensor detects the internal air humidity, and the temperature sensor detects changes in the internal temperature. When drying is complete, the hot steam supply is stopped, and the controller stops the fan and suction pump. The door is then opened to remove the drying trays and collect the ferrous fumarate crystals.
[0027] It should be noted that the exhaust channel of this application can be installed at any position on the side of the blower installation. The reason for choosing to install it on the upper part of the drying box is to extend the residence time of the airflow at the bottom.
[0028] It should be noted that the weight ratio of the spheres can be selected according to the requirements, and the weight ratio of the spheres is calculated based on the output power of the fan.
[0029] Furthermore, the upper part of the wind-vibration ball has multiple through holes.
[0030] By adopting the above technical solution: Since the closed wind-vibrating ball is used, its weight cannot be adjusted. If a heavier closed wind-vibrating ball is selected, a larger wind speed is required to drive it. If a lighter wind-vibrating ball is selected, the large water content of the crystal will prevent it from moving when it is struck in the initial state, and a small amplitude of vibration cannot achieve a good closing effect.
[0031] The core improvement of this invention lies in the following: by opening multiple through holes in the upper half of the wind-vibrating ball, steam enters the interior of the wind-vibrating ball through the through holes, and some of the condensed liquid falls as water onto the closed semi-ring side of the wind-vibrating ball, thereby increasing the weight of the wind-vibrating ball and enhancing the vibration during the striking process. Furthermore, as the ball is heated, the condensation inside the wind-vibrating ball will also evaporate, thereby reducing the vibration.
[0032] Furthermore: a counterweight is placed inside the wind-vibration ball.
[0033] By adopting the above technical solution: Since the closed-type wind vibration ball is used, its weight cannot be adjusted. If a heavier type of closed-type wind vibration ball is selected, and only an opening is made in the upper half of the wind vibration ball to increase the weight of the condensate water vibration, the vibration will not be stable.
[0034] The core improvement of this invention lies in: adding a vibration block to increase the impact vibration during the swing of the wind-driven ball.
[0035] Furthermore, the counterweight is suspended inside the wind-vibrating ball by a locking rope.
[0036] By adopting the above technical solution: because the counterweight is used to enhance the impact vibration, the counterweight may offset the swing amplitude during the swing of the wind-driven ball, resulting in the inability to hit.
[0037] The core improvement of this invention lies in the fact that the counterweight is hoisted by a locking rope. When the wind-vibrating ball swings in the first direction, the counterweight plays a counteracting role. Under the counteracting effect, the return speed of the wind-vibrating ball is accelerated, and this is repeated to increase the vibration of the wind-vibrating ball.
[0038] Furthermore, the downward position of the counterweight should be higher than half the height of the wind-driven ball.
[0039] Compared with the prior art, the present invention has the following advantages: by adding wind-vibrating balls to the bottom of the drying tray, the wind-vibrating balls are pushed to collide with each other or with the bottom of the tray during the drying process, thereby closing the gaps between the crystals when the vibration is transmitted, covering the crystal powder under the crystals, preventing the crystal powder from escaping with heating, reducing production costs and losses. Since the structure of this application is more reasonable, the production cost is lower, making it suitable for widespread promotion and application. Attached Figure Description
[0040] Figure 1 This is a process flow diagram for the production of ferrous fumarate.
[0041] Figure 2 This is a first-angle perspective view of the drying equipment of the present invention;
[0042] Figure 3 This is a second perspective view of the drying equipment of the present invention;
[0043] Figure 4This is a cross-sectional view of the drying oven of the present invention;
[0044] Figure 5 This is the present invention. Figure 4 Enlarged view of section A;
[0045] Figure 6 This is a structural diagram of the wind-induced vibration component of the present invention;
[0046] Figure 7 This is a table describing the motion patterns of a wind-driven ball. Detailed Implementation
[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0048] In the description of the invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0049] In a first embodiment of a process for producing ferrous fumarate according to the present invention, such as Figure 1 As shown, a process for producing ferrous fumarate includes the following specific steps:
[0050] Step 1: Add fumaric acid to the first reaction vessel and add water to the first reaction vessel. Then add sodium carbonate to the first reaction vessel and heat to 75-85℃ to react until no bubbles are generated in the filtrate. Filter the filtrate through the first filter to remove visible impurities and set it aside for later use.
[0051] Step 2: Add ferrous sulfate and water to a dissolving vessel and dissolve at a temperature of 70-80℃. Then, filter the solution through a second filter until no visible impurities are visible.
[0052] Step 3: Add the filtrate and solution prepared in steps (1) and (2) to the second reaction vessel. The reaction temperature of the second reaction vessel is 90-95℃, and this temperature is maintained for 1 hour until the solution is a clear brick red color.
[0053] Step 4: Cool the second reactor to below 40°C. After a large number of crystals are produced in the mixed solution, send the solid-liquid mixture to a centrifuge for solid-liquid separation. The separated mother liquor is sent back to the second reactor for further reaction.
[0054] Step 5: After drying the separated crystals, send them to a drying equipment and then to a screening machine to obtain the ferrous fumarate product.
[0055] A ferrous fumarate drying device includes a set of symmetrically arranged balance plates 1 and a drying box 2 fixedly installed on the upper part of the balance plates 1.
[0056] The drying oven 2 is composed of multiple side panels 3 spliced together, and the drying oven 2 has openings at both ends. One end of the opening is rotatably connected to the door panel 4, and the other end of the opening is detachably and fixedly connected to the air box 5.
[0057] The air box 5 contains a fan that blows air towards the opening on the other side, and the air box 5 has multiple hot steam inlets 6.
[0058] Exhaust passage 7, which is installed in the drying oven 2;
[0059] Drying box 2, with multiple symmetrical corner seats 8 installed on the inner wall of drying box 2. The corner seats 8 are grouped into groups of four for placing drying trays 9. The lower part of the drying trays 9 has a sliding groove 10, and the sliding groove 10 is installed with a wind vibration component 11.
[0060] The opening of the drying oven 2 is designed in an L-shaped stepped manner, and a sealing strip is installed at the step to ensure dust prevention after closing;
[0061] The exhaust channel 7 is connected to the suction pump 12, which draws gas out of the drying chamber 2.
[0062] The drying chamber 2 is also equipped with a controller 13, which is used to adjust the output power of the fan and the suction pump 12.
[0063] The wind vibration assembly 11 includes a slider 14 of the same length as the slide groove 10, and the lower part of the slider 14 is connected to the wind vibration ball 16 via a guide rope 15.
[0064] By adopting the above technical solution: after solid-liquid separation, the product is sent to a dryer for drying. However, when using airflow drying or vacuum drying, the crystal powder attached to the crystal gradually detaches and is lost with the airflow as the crystal gradually dries. Therefore, the airflow is usually passed through a cyclone separator again to separate and recover the crystal powder. The process is complicated and the cost is high.
[0065] The core improvement of this invention lies in the following: by using a pull-out slider 14 at the bottom of the drying tray 9, and installing a vibrating ball 16 at the bottom of the slider 14, it should be noted that the vibrating ball 16 should be completely hidden within the groove depth of the slide groove 10. During use, the crystals after solid-liquid separation are placed on the drying tray 9, and multiple drying trays 9 are selectively placed on the corner seat 8. A suitable weight of the vibrating ball 16 is selected and installed on the slider 14. The slider 14 is installed in the slide groove 10, and the door plate 4 is closed for sealing. Then, hot steam is sent into the air box 5 through the hot steam interface 6. The controller 13 controls the fan and the suction pump 12 to start synchronously. The fan blows the hot steam to one side of the drying tray 9, pushing the vibrating ball 16 to shake.
[0066] The wind-vibrating ball 16 has multiple working modes during the shaking process. The first mode is: when the wind-vibrating ball 16 moves in the initial state, it moves in a single direction. Therefore, when the wind-vibrating ball 16 swings at a large amplitude, it can hit the upper wall of the slide groove 10. During the hitting process, the vibration is transmitted to the drying tray 9, so that the gap between the crystals closes during the drying process, causing the crystals to sink, thereby covering most of the crystal powder on the lower part of the crystals and preventing the crystal powder from escaping with the drying wind.
[0067] Second form of wind-vibrating ball: Due to the unavoidable natural laws, the wind forces on multiple wind-vibrating balls 16 are different, resulting in different swing amplitudes of the wind-vibrating balls. Furthermore, due to the above reasons, the swing direction and swing amplitude will be different during the swing process. The applicant has prepared a table to illustrate that in any state, it can generate amplitude, thereby closing the crystal gap and covering the crystal powder. When two wind-vibrating balls 16 collide with each other, they generate amplitude between them, thereby transmitting and achieving the effect of the first form.
[0068] Humidity and temperature sensors can also be installed inside the drying chamber 2. The humidity sensor detects the internal air humidity, and the temperature sensor detects the internal temperature change. When drying is completed, the hot steam supply is stopped, and the fan and suction pump 12 are stopped by the controller. The door is opened to take out the drying tray 9 and collect the ferrous fumarate crystals.
[0069] It should be noted that the exhaust channel of this application can be installed at any position on the side of the blower installation. The reason for choosing to install it on the upper part of the drying box is to extend the residence time of the airflow at the bottom.
[0070] It should be noted that the weight ratio of the spheres can be selected according to the requirements, and the weight ratio of the spheres is calculated based on the output power of the fan.
[0071] In the second embodiment of the present invention, as Figure 6 As shown, the upper half of the wind-vibration ball 16 has multiple through holes 17.
[0072] By adopting the above technical solution: Since the closed wind-vibrating ball is used, its weight cannot be adjusted. If a heavier closed wind-vibrating ball is selected, a larger wind speed is required to drive it. If a lighter wind-vibrating ball is selected, the large water content of the crystal will prevent it from moving when it is struck in the initial state, and a small amplitude of vibration cannot achieve a good closing effect.
[0073] The core improvement of this invention lies in the following: by opening multiple through holes 17 in the upper half of the wind-vibrating ball 16, steam enters the interior of the wind-vibrating ball 16 through the through holes 17, and some of the condensed liquid falls as water onto the closed semi-ring side of the wind-vibrating ball, thereby increasing the weight of the wind-vibrating ball and enhancing the vibration during the striking process. Furthermore, as the ball is heated, the condensation inside the wind-vibrating ball will evaporate, thereby reducing the vibration.
[0074] In the third embodiment of the present invention, as Figure 6 As shown: A counterweight 18 is placed inside the wind-vibration ball 16.
[0075] By adopting the above technical solution: Since the closed-type wind vibration ball is used, its weight cannot be adjusted. If a heavier type of closed-type wind vibration ball is selected, and only an opening is made in the upper half of the wind vibration ball to increase the weight of the condensate water vibration, the vibration will not be stable.
[0076] The core improvement of this invention lies in: by adding a counterweight 18, the impact vibration is amplified during the swing of the wind-driven ball 16.
[0077] In the fourth embodiment of the present invention, as Figure 6 As shown, the counterweight 18 is suspended inside the wind-vibrating ball 16 by a locking rope 19.
[0078] The counterweight should be positioned above half the height of the wind-driven ball.
[0079] By adopting the above technical solution: because the counterweight is used to enhance the impact vibration, the counterweight may offset the swing amplitude during the swing of the wind-driven ball, resulting in the inability to hit.
[0080] The core improvement of this invention lies in the fact that the counterweight 18 is suspended by the locking rope 19. When the wind-vibrating ball 16 swings in the first direction, the counterweight 18 acts as a counteractor. Under the counteracting effect, the return speed of the wind-vibrating ball 16 is accelerated, thus repeatedly increasing the vibration of the wind-vibrating ball.
[0081] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.
Claims
1. A ferrous fumarate drying apparatus, characterized by, The drying equipment comprises a set of symmetrical balance plates (1), a drying box (2) fixedly installed on the upper part of the balance plates (1); The drying box (2) is composed of a plurality of side plates (3) and is open at both ends, one end of which is rotationally connected with a door plate (4), and the other end is detachably fixedly connected with a wind box (5); The wind box (5) is provided with a fan therein, which blows to the other end opening, and a plurality of hot steam interfaces (6) are formed in the wind box (5); An exhaust channel (7) is installed in the drying box (2) and is connected with a suction pump (12), which sucks the gas in the drying box (2) outward; A plurality of symmetrical corner seats (8) are installed on the inner wall of the drying box (2), four of which form a group for placing a drying disc (9), and a sliding groove (10) is formed in the lower part of the drying disc (9), in which a wind vibration assembly (11) is installed; The wind vibration assembly (11) comprises a sliding block (14) with the same length as the sliding groove (10), a wind vibration ball (16) connected with the sliding block (14) through a pull rope (15), a plurality of through holes (17) formed in the upper half of the wind vibration ball (16), a counterweight (18) placed in the wind vibration ball (16), and the counterweight (18) hung in the wind vibration ball (16) through a locking rope (19), wherein the vertical position of the counterweight (18) is higher than half the height of the wind vibration ball (16).
2. The ferrous fumarate drying apparatus of claim 1, wherein: The opening of the drying box (2) is provided with an L-shaped step, and a sealing strip is installed on the step, so as to prevent dust after closing.
3. The ferrous fumarate drying apparatus of claim 1, wherein: A controller (13) is further installed on the drying box (2), which is used to adjust the output power of the fan and the suction pump (12).