Accurate acetic anhydride weighing and feeding device

Abstract

The utility model discloses a kind of acetic anhydride precision weight feeding device, it is related to acetic anhydride production equipment technical field.The utility model includes base, the base top is equipped with weighing apparatus, weighing tray is installed on the weighing apparatus, weighing container is positioned and placed in the weighing tray, the base top is fixedly connected with two supports, the support top is fixedly connected with feeding tank, further include: adjusting mechanism, the adjusting mechanism is set at the top of feeding tank.The utility model is by setting adjusting mechanism, specifically in the process of weighing, motor drive gear is started to rotate, then gear ring rotates together, at this moment, threaded rod will drive square rod to move upwards or downwards, connecting rod is then moved together with sealing plug by vertical rod to adjust the position of sealing plug, then the feeding speed of acetic anhydride is adjusted, feeding tank can be sealed by sealing plug at any time, this mode can more accurately weigh acetic anhydride, reduce subsequent adjustment step.

Description

Technical Field

[0001] This utility model belongs to the technical field of acetic anhydride production equipment, and in particular relates to an acetic anhydride precision weighing and feeding device. Background Technology

[0002] The acetic anhydride precision weighing and feeding device is an automated device designed for high-precision feeding. It is mainly used in chemical production, pharmaceutical synthesis or laboratory research to achieve accurate weighing and controlled addition of acetic anhydride (a highly reactive organic reagent).

[0003] Traditionally, acetic anhydride needs to be weighed using a weighing device before it is added. However, when adding acetic anhydride to the weighing container, workers usually pour it in by pouring. This method can lead to inaccurate dosage, resulting in either too much or too little. As a result, workers need to adjust the amount of acetic anhydride in the container multiple times, which is time-consuming and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a precise weighing and feeding device for acetic anhydride. By setting an adjustment mechanism, specifically during the weighing process, the motor drives the gear to rotate, and the gear ring rotates accordingly. At this time, the threaded rod drives the square rod to move up or down, and the connecting rod drives the sealing plug to move together via the vertical rod. The position of the sealing plug can be adjusted according to the real-time weighing data, thereby adjusting the feeding speed of the acetic anhydride. Furthermore, the feeding container can be sealed at any time through the sealing plug. This method allows for more precise weighing of acetic anhydride, reducing subsequent adjustment steps and improving weighing efficiency. It solves the problem that traditional acetic anhydride is usually added to the weighing container by pouring, which leads to inaccurate final dosage, resulting in either too much or too little dosage, requiring multiple adjustments by operators and causing low efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a precise weighing and feeding device for acetic anhydride, comprising a base, a weighing device mounted on the top of the base, a weighing tray mounted on the weighing device, a weighing container positioned within the weighing tray, two supports fixedly connected to the top of the base, and a feeding tank fixedly connected to the top of the supports, and further comprising:

[0007] An adjusting mechanism is provided at the top of the feeding tank. The adjusting mechanism includes a connecting rod at the top of a connecting rod, a vertical rod fixedly connected to the bottom of the connecting rod, a sealing plug fixedly connected to the bottom of the vertical rod, a square rod fixedly connected to the rear of the bottom of the connecting rod, a threaded rod fixedly connected to the bottom of the square rod, and a gear ring threadedly connected to the outer side of the threaded rod.

[0008] The sealing plug has a conical top and bottom, with the conical bottom of the sealing plug contacting the inner wall of the feeding tank.

[0009] Furthermore, a horizontal plate is fixedly connected to the inner side of the bracket, a convex plate is fixedly connected to the back of the horizontal plate, a baffle is fixedly connected to the top and bottom of the convex plate, a motor is fixedly connected to the bottom of the convex plate, and a gear is fixedly connected to the top output end of the motor; the motor drives the gear and drives the gear ring to rotate, thereby causing the threaded rod to move upward or downward.

[0010] The baffle is used to cover the threaded rod, gear ring and gear, and the motor is connected to an external power source through wires.

[0011] Furthermore, a limiting ring is provided at the bottom of the gear ring, the bottom of the limiting ring is fixedly connected to the top of the protrusion, an annular groove is provided inside the limiting ring, and an inner ring is fixedly connected to the bottom of the gear ring, the inner ring being rotatably connected inside the annular groove; the gear ring is restricted by the limiting ring and the inner ring, thereby keeping the gear ring rotating in its original position, allowing the threaded rod to move smoothly upward or downward;

[0012] The threaded rod passes through the gear ring and the convex plate, and the limiting ring cooperates with the inner ring to restrict the gear ring.

[0013] Furthermore, an auxiliary rod is fixedly connected to the inner wall of the feeding tank. The vertical rod slides through the auxiliary rod and extends to the outside. The vertical rod is slidably connected to the auxiliary rod. The square rod slides through the upper baffle and is slidably connected to the upper baffle. The square rod is used to limit the threaded rod, so that the threaded rod moves in a straight up and down manner.

[0014] Furthermore, two positioning blocks are fixedly connected to the top of the weighing tray, and several rubber protrusions are fixedly connected to the bottom inner side of the weighing tray; when the weighing container is placed on the weighing tray, the positioning blocks are inserted into the positioning blocks on the weighing tray to position the weighing container.

[0015] Furthermore, a second positioning block is fixedly connected to the front of the weighing container, a discharge pipe is fixedly connected to the right side of the weighing container, a valve is installed on the discharge pipe, the second positioning block is inserted into the two first positioning blocks, the bottom of the weighing container is in contact with the surface of the rubber convex strip, and the bottom of the inner wall of the weighing container is at the same horizontal height as the discharge pipe; the bottom of the weighing container will contact the surface of the rubber convex strip, thereby enabling the weighing container to be placed stably.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, through the setting of an adjustment mechanism, specifically, during the weighing process, starts the motor to drive the gear to rotate, and the gear ring rotates along with it. At this time, the threaded rod will drive the square rod to move up or down, and the connecting rod will drive the sealing plug to move together through the vertical rod. The position of the sealing plug can be adjusted according to the real-time weighing data, thereby adjusting the feeding speed of acetic anhydride, and the feeding tank can be sealed at any time through the sealing plug. This method can weigh acetic anhydride more accurately, reduce subsequent adjustment steps, and improve weighing efficiency.

[0018] 2. This utility model sets up a weighing tray, specifically by placing the weighing container on the weighing tray and inserting the second positioning block on the weighing container into the first positioning block on the weighing tray to position the weighing container. At the same time, the bottom of the weighing container will contact the surface of the rubber convex strip, thereby enabling the weighing container to be placed stably. This method can avoid frequent shaking or displacement of the weighing container during the weighing process and improve the weighing accuracy.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the baffle shell of this utility model;

[0023] Figure 3 This is a front view cross-sectional structural diagram of the feeding tank of this utility model;

[0024] Figure 4 This is a schematic diagram of the bottom structure of the gear ring of this utility model;

[0025] Figure 5 This is a schematic diagram of the top structure of the weighing tray of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Base; 11. Weighing device; 111. Weighing tray; 112. Positioning block one; 113. Rubber convex strip; 12. Weighing container; 121. Discharge pipe; 122. Positioning block two; 13. Bracket; 131. Horizontal plate; 132. Convex plate; 133. Baffle; 134. Motor; 135. Gear; 14. Feeding tank; 2. Adjusting mechanism; 21. Connecting rod; 211. Vertical rod; 212. Sealing plug; 213. Auxiliary rod; 22. Square rod; 23. Threaded rod; 24. Gear ring; 241. Limiting ring; 242. Annular groove; 243. Inner ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-5 As shown, this utility model is a precise weighing and feeding device for acetic anhydride, including a base 1, a weighing device 11 mounted on the top of the base 1, a weighing tray 111 mounted on the weighing device 11, a weighing container 12 positioned inside the weighing tray 111, two supports 13 fixedly connected to the top of the base 1, and a feeding tank 14 fixedly connected to the top of the supports 13, and also including:

[0030] Adjustment mechanism 2 is located at the top of the feeding tank 14. Adjustment mechanism 2 includes a connecting rod 21 at the top of the connecting rod 21, a vertical rod 211 fixedly connected to the bottom of the connecting rod 21, a sealing plug 212 fixedly connected to the bottom of the vertical rod 211, a square rod 22 fixedly connected to the rear of the bottom of the connecting rod 21, a threaded rod 23 fixedly connected to the bottom of the square rod 22, and a gear ring 24 threadedly connected to the outer side of the threaded rod 23. During the weighing process, the starting motor 134 drives the gear 135 to rotate, and the gear ring 24 rotates accordingly. The threaded rod 23 drives the square rod 22 to move up or down, and the connecting rod 21 drives the sealing plug 212 to move together through the vertical rod 211. The position of the sealing plug 212 can be adjusted according to the real-time weighing data, thereby adjusting the feeding speed of acetic anhydride. The feeding tank 14 can also be sealed at any time through the sealing plug 212. This method can weigh acetic anhydride more accurately, reduce subsequent adjustment steps, and improve weighing efficiency. The top and bottom of the sealing plug 212 are both conical, and the conical surface at the bottom of the sealing plug 212 contacts the inner wall of the feeding tank 14.

[0031] A horizontal plate 131 is fixedly connected to the inner side of the bracket 13, and a convex plate 132 is fixedly connected to the back of the horizontal plate 131. A baffle 133 is fixedly connected to the top and bottom of the convex plate 132. A motor 134 is fixedly connected to the bottom of the convex plate 132, and a gear 135 is fixedly connected to the top output end of the motor 134. The baffle 133 is used to cover the threaded rod 23, the gear ring 24 and the gear 135. The motor 134 is connected to an external power source through a wire.

[0032] A limiting ring 241 is provided at the bottom of the gear ring 24. The bottom of the limiting ring 241 is fixedly connected to the top of the protrusion 132. An annular groove 242 is provided inside the limiting ring 241. An inner ring 243 is fixedly connected to the bottom of the gear ring 24. The inner ring 243 is rotatably connected inside the annular groove 242. The threaded rod 23 passes through the gear ring 24 and the protrusion 132. The limiting ring 241 and the inner ring 243 cooperate to limit the gear ring 24.

[0033] An auxiliary rod 213 is fixedly connected to the inner wall of the feeding tank 14. A vertical rod 211 slides through the auxiliary rod 213 and extends to the outside. The vertical rod 211 is slidably connected to the auxiliary rod 213. A square rod 22 slides through the upper baffle 133. The square rod 22 is slidably connected to the upper baffle 133.

[0034] Two positioning blocks 112 are fixedly connected to the top of the weighing tray 111, and several rubber protrusions 113 are fixedly connected to the bottom inner side of the weighing tray 111. The weighing container 12 is placed on the weighing tray 111, and the positioning block 122 on the weighing container 12 is inserted into the positioning block 112 on the weighing tray 111 to position the weighing container 12. At the same time, the bottom of the weighing container 12 will contact the surface of the rubber protrusions 113, so that the weighing container 12 can be placed stably. This method can avoid frequent shaking or displacement of the weighing container 12 during the weighing process and improve the weighing accuracy.

[0035] The weighing container 12 is fixedly connected to the front of the positioning block 122, and the right side of the weighing container 12 is fixedly connected to the discharge pipe 121. A valve is installed on the discharge pipe 121. The positioning block 122 is inserted into the two positioning blocks 112. The bottom of the weighing container 12 is in contact with the surface of the rubber convex strip 113. The bottom of the inner wall of the weighing container 12 is at the same level as the discharge pipe 121.

[0036] One specific application of this embodiment is:

[0037] In use, first place the weighing container 12 on the weighing tray 111, and insert the second positioning block 122 on the weighing container 12 into the first positioning block 112 on the weighing tray 111 to position the weighing container 12. At the same time, the bottom of the weighing container 12 will contact the surface of the rubber protrusion 113, thus ensuring the stable placement of the weighing container 12. After placement, add acetic anhydride to the feeding tank 14. After addition, start the motor 134 to drive the gear 135 to rotate clockwise, causing the gear ring 24 to rotate counterclockwise. Simultaneously, the gear ring 24 will rotate within the limiting ring 241 through the inner ring 243, causing the threaded rod 23 to move upward and drive the square rod 22 to move upward as well. The square rod 22 serves as a limit, causing the square rod 22 to drive the connecting rod 21 to move upward in a straight line. Subsequently, the connecting rod 21 drives the sealing plug 212 upward through the vertical rod 211, thereby opening the bottom of the feeding tank 14. At this time, the acetic anhydride will... The acetic anhydride is discharged and enters the weighing container 12 for weighing. The weighing device 11 weighs the acetic anhydride in the weighing container 12 through the weighing sensor (model GSL301). The weighing data is transmitted to the control panel for display. When the weight is close to the preset value, the starting motor 134 is controlled to drive the gear 135 to rotate counterclockwise. At this time, the threaded rod 23 moves downward, and the connecting rod 21 drives the sealing plug 212 to move downward through the vertical rod 211, thereby reducing the gap between the sealing plug 212 and the feeding tank 14, allowing the acetic anhydride to slowly enter the weighing container 12. Through real-time monitoring of the weighing data, the feeding tank 14 can be sealed at any time through the sealing plug 212. This method can weigh the acetic anhydride more accurately, reduce the subsequent adjustment steps, and improve the weighing efficiency. Finally, the conveying pipe is connected to the discharge pipe 121, and the valve on the discharge pipe 121 is opened, so that a certain amount of acetic anhydride can be discharged through the discharge pipe 121.

[0038] It should be noted that the control of the weighing device 11 and the motor 134 in this application can both be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be achieved using existing technologies, such as PLC.

[0039] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An acetic anhydride precision weighing and feeding device, comprising a base (1), a weighing device (11) mounted on the top of the base (1), a weighing tray (111) mounted on the weighing device (11), a weighing container (12) positioned inside the weighing tray (111), two supports (13) fixedly connected to the top of the base (1), and a feeding tank (14) fixedly connected to the top of the supports (13), characterized in that, Also includes: Adjustment mechanism (2), the adjustment mechanism (2) is set on the top of the feeding tank (14), the adjustment mechanism (2) includes a connecting rod (21) set on the top of the connecting rod (21), a vertical rod (211) is fixedly connected to the bottom of the connecting rod (21), a sealing plug (212) is fixedly connected to the bottom of the vertical rod (211), a square rod (22) is fixedly connected to the bottom of the connecting rod (21), a threaded rod (23) is fixedly connected to the bottom of the square rod (22), and a gear ring (24) is threadedly connected to the outer side of the threaded rod (23); The top and bottom of the sealing plug (212) are both conical, and the conical surface at the bottom of the sealing plug (212) is in contact with the inner wall of the feeding tank (14).

2. The acetic anhydride precision weighing and feeding device according to claim 1, characterized in that, A horizontal plate (131) is fixedly connected to the inner side of the bracket (13), a convex plate (132) is fixedly connected to the back of the horizontal plate (131), a baffle (133) is fixedly connected to the top and bottom of the convex plate (132), a motor (134) is fixedly connected to the bottom of the convex plate (132), and a gear (135) is fixedly connected to the top output end of the motor (134). The threaded rod (23), gear ring (24) and gear (135) are covered with a baffle (133).

3. The acetic anhydride precision weighing and feeding device according to claim 2, characterized in that, The bottom of the gear ring (24) is provided with a limiting ring (241), the bottom of the limiting ring (241) is fixedly connected to the top of the protrusion plate (132), the limiting ring (241) is provided with an annular groove (242), the bottom of the gear ring (24) is fixedly connected with an inner ring (243), and the inner ring (243) is rotatably connected inside the annular groove (242); The threaded rod (23) passes through the gear ring (24) and the convex plate (132), and the limiting ring (241) and the inner ring (243) are used to cooperate to limit the gear ring (24).

4. The acetic anhydride precision weighing and feeding device according to claim 3, characterized in that, An auxiliary rod (213) is fixedly connected to the inner wall of the feeding tank (14). The vertical rod (211) slides through the auxiliary rod (213) and extends to the outside. The vertical rod (211) is slidably connected to the auxiliary rod (213). The square rod (22) slides through the upper baffle (133). The square rod (22) is slidably connected to the upper baffle (133).

5. The acetic anhydride precision weighing and feeding device according to claim 3, characterized in that, The weighing tray (111) has two positioning blocks (112) fixedly connected to the top, and several rubber protrusions (113) fixedly connected to the bottom inner side of the weighing tray (111).

6. The acetic anhydride precision weighing and feeding device according to claim 5, characterized in that, The weighing container (12) is fixedly connected to the front of the positioning block two (122), and the weighing container (12) is fixedly connected to the right side of the discharge pipe (121). A valve is installed on the discharge pipe (121), and the positioning block two (122) is inserted into two positioning blocks one (112).

7. The acetic anhydride precision weighing and feeding device according to claim 6, characterized in that, The bottom of the weighing container (12) is in contact with the surface of the rubber protrusion (113), and the bottom of the inner wall of the weighing container (12) is at the same level as the discharge pipe (121).

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