O-hydroxybenzonitrile drying device

Abstract

The utility model relates to the technical field of o-hydroxybenzonitrile production, in particular to an o-hydroxybenzonitrile drying device. Comprising a tower body, a material separator is installed in the upper end of the tower body, the portion, above the material separator, of the tower body communicates with a negative pressure assembly, a fixing base is arranged below the tower body, the fixing base and the tower body are fixedly connected through two vertical supporting plates, a sliding base is slidably and hermetically communicated with the interior of the fixing base, and the sliding base and the fixing base are connected through a telescopic rod; the fixed seat is communicated with the heating purifier, the hopper is located between the tower body and the sliding seat, the hopper is installed in the skip car, a porous screen plate is installed in the hopper, and the two supporting plates are each provided with a positioning assembly capable of positioning the skip car. By means of the linkage design of the elastic sliding sleeve, the sliding rod, the spring and the guide rail and the cooperation of the rotating wheel and the arc-shaped groove, automatic guiding and centering are achieved when the skip car is pushed in.

Description

Technical Field

[0001] This utility model relates to the field of o-hydroxybenzonitrile production technology, specifically to an o-hydroxybenzonitrile drying device. Background Technology

[0002] o-Hydroxybenzonitrile is an important intermediate in pesticides, fragrances, and liquid crystal materials, especially a key intermediate in the synthesis of the methoxyacrylate fungicide pyraclostrobin, and has been widely used in the agrochemical and pharmaceutical industries. o-Hydroxybenzonitrile is susceptible to moisture damage and needs to be dried before storage.

[0003] Fluidized bed dryers are generally used to dry o-hydroxybenzonitrile. However, the hoppers of existing fluidized bed dryers are not easy to position, and air leakage can easily occur after the hopper is clamped after o-hydroxybenzonitrile is added into it.

[0004] To address the issue of inconvenient hopper positioning, patent document CN204730623U discloses a positioning device for a fluidized bed dryer. This device includes a fixed cylinder and a movable hopper cart. The movable hopper cart consists of a hopper and a trolley support. A pair of wheels are symmetrically positioned at the bottom of the trolley support, and a guide rail is located below each pair of wheels. The guide rails and corresponding wheels form a guiding engagement. A positioning baffle is located on one side of the hopper's opening, and this baffle engages with one side of the fixed cylinder's opening. The hopper is positioned using the engagement of the wheels and guide rails, and the positioning baffle and fixed cylinder. However, this solution requires the installation of guide rails on the ground after the fluidized bed dryer is installed, increasing the installation cost. Utility Model Content

[0005] The main purpose of this invention is to provide a drying device that facilitates guiding the hopper and stirring of the o-hydroxybenzonitrile inside the hopper.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A drying device for o-hydroxybenzonitrile includes a tower body with a material separator installed at the upper end. The tower body above the material separator is connected to a negative pressure component. A fixed base is located below the tower body and is fixedly connected to the tower body by two vertical support plates. A sliding seat is slidably sealed inside the fixed base and connected to the fixed base by a telescopic rod. The fixed base is connected to a heating and purifying unit. A hopper is located between the tower body and the sliding seat and is installed in a material cart. A perforated mesh plate is installed inside the hopper. Positioning components for positioning the material cart are provided on both support plates. A right-angle gearbox is concentrically fixed inside the hopper. An agitator is fixed on the vertical output end of the right-angle gearbox, located above the perforated mesh plate. A drive shaft is installed inside the hopper, horizontally positioned. The input end of the right-angle gearbox is fixedly connected to one end of the drive shaft, and the other end of the drive shaft extends to the outside of the hopper. The drive shaft and the hopper are rotatably sealed together. A second friction disc is concentrically fixed to one end of the drive shaft outside the hopper. A motor is fixed to the upper end of the heating purifier, with its output shaft parallel to the drive shaft. A first friction disc is concentrically fixed to the motor's output shaft. After the sliding seat and the tower body clamp the hopper, the first and second friction discs are concentric and in contact.

[0008] Specifically, the negative pressure component includes a duct that is connected to the tower body above the material separator, and a negative pressure fan is installed on the duct.

[0009] Specifically, the material cart includes an inverted U-shaped upper frame and an inverted U-shaped lower frame. The hopper is installed between two straight sections of the upper frame. The straight sections of the upper frame and the straight sections of the lower frame are fixedly connected by multiple uprights. Multiple casters are installed at the lower end of the lower frame. The material cart is located between two support plates, which are symmetrically arranged according to the axis of the drive shaft.

[0010] Specifically, the positioning component includes a sliding sleeve that is slidably fitted onto the support plate. The sliding sleeve can slide in the vertical direction. A retaining ring is fixed on the support plate below the sliding sleeve, which blocks the sliding sleeve. Multiple sliding rods are elastically slidably connected to the sliding sleeve. The sliding direction of the sliding rods is perpendicular to the sliding direction of the sliding sleeve. The sliding rods are fixedly connected to the guide rail, which is perpendicular to the support plate. A rotating wheel is concentrically rotatably connected to the upright. An arc-shaped groove corresponding to the rotating wheel is opened on the guide rail. When the hopper, tower body, and sliding seat are concentric, the rotating wheel is located in the arc-shaped groove on one side.

[0011] Specifically, the slide rod passes through the slide sleeve, and a spring is fitted on the slide rod. One end of the spring is fixedly connected to the slide sleeve, and the other end of the spring is fixedly connected to the slide rod.

[0012] Specifically, one end of the guide rail is machined with a guide part, which guides the material cart when it drives the hopper to move between the tower body and the sliding seat.

[0013] Specifically, sealing rings are concentrically fixed at the lower end of the tower body and the upper end of the sliding seat. A flange corresponding to the sealing ring at the lower end of the tower body is machined at the upper end of the hopper, and a flange corresponding to the sealing ring at the upper end of the sliding seat is machined at the lower end of the hopper.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Through the linkage design of elastic sleeves, sliding rods, springs, and guide rails, combined with the cooperation of the rotating wheel and the arc-shaped groove, automatic guidance and centering are achieved when the material cart is pushed in. When the rotating wheel is embedded in the arc-shaped groove, the hopper, tower body, and sliding seat are automatically concentric, avoiding manual adjustment errors. The guide section of the guide rail further simplifies the pushing path and ensures positioning accuracy. At the same time, the nested structure of the sealing ring and flange forms a multiple seal after clamping, effectively solving the air leakage problem caused by positioning deviation in traditional devices and ensuring the airtightness of the drying process.

[0016] 2. A right-angle gearbox converts horizontal transmission to vertical stirring. The motor drives the transmission shaft via the first and second friction discs, automatically completing power connection after the hopper is positioned. The stirrer acts directly on the material layer above the porous mesh plate, breaking up o-hydroxybenzonitrile agglomerates, avoiding uneven heating or clumping, and significantly improving drying efficiency. This design seamlessly integrates the stirring function into the moving hopper, eliminating the need for an additional power interface and simplifying the operation process.

[0017] 3. The inverted U-shaped upper and lower frames are rigidly connected by uprights, enhancing structural strength; the omnidirectional wheels and symmetrical support plate layout ensure stability during material cart movement. The elastic sliding mechanism of the positioning components allows the hopper to adaptively fine-tune during lifting, avoiding wear on the sealing surface caused by rigid contact. The material cart can be quickly detached from the drying system, facilitating material loading and unloading and equipment maintenance, and enabling modular management of the production process. Attached Figure Description

[0018] Figure 1 This is a front view of the drying apparatus.

[0019] Figure 2 This is a left view of the drying apparatus.

[0020] Figure 3 This is a schematic diagram of a material cart.

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the positioning component.

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the material cart after it has been positioned by the positioning component.

[0023] Figure 6 for Figure 2 A magnified view of region A in the middle.

[0024] The components in the attached diagram are named as follows: 1. Tower body, 2. Hopper, 3. Fixed base, 4. Sliding base, 5. Heating and purifying unit, 6. Air duct, 7. Negative pressure fan, 8. Support plate, 801. Sliding sleeve, 802. Retaining ring, 803. Sliding rod, 804. Spring, 805. Guide rail, 9. Cart, 901. Upper frame, 902. Lower frame, 903. Upright pole, 904. Rotary wheel, 905. Universal wheel, 10. Motor, 11. First friction disc, 12. Second friction disc, 13. Right angle gearbox, 14. Drive shaft, 15. Agitator, 16. Telescopic rod, 17. Arc groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1: Refer to Figures 1-6 As shown, an o-hydroxybenzonitrile drying device includes a tower body 1, a material separator installed in the upper end of the tower body 1, and the tower body 1 above the material separator is connected to a negative pressure component.

[0027] The negative pressure assembly includes a duct 6, which is connected to a portion of the tower body 1 above the material separator, and a negative pressure fan 7 is installed on the duct 6.

[0028] A fixed seat 3 is provided below the tower body 1. The fixed seat 3 is fixedly connected to the tower body 1 by two vertical support plates 8. A sliding seat 4 is slidably sealed inside the fixed seat 3. The sliding seat 4 is connected to the fixed seat 3 by a telescopic rod 16.

[0029] The mounting base 3 is connected to the heating purifier 5.

[0030] The hopper 2 is located between the tower body 1 and the sliding seat 4. The hopper 2 is installed inside the material cart 9, and a perforated mesh plate is installed inside the hopper 2.

[0031] The material cart 9 includes an inverted U-shaped upper frame 901 and an inverted U-shaped lower frame 902. The hopper 2 is installed between the two straight parts of the upper frame 901. The straight parts of the upper frame 901 and the straight parts of the lower frame 902 are fixedly connected by multiple uprights 903. Four casters 905 are installed at the lower end of the lower frame 902. The hopper 2 is installed inside the upper frame 901. The material cart 9 is located between two support plates 8.

[0032] Both the lower end of the tower body 1 and the upper end of the sliding seat 4 are concentrically fixed with sealing rings. The upper end of the hopper 2 is machined with a flange corresponding to the sealing ring at the lower end of the tower body 1, and the lower end of the hopper 2 is machined with a flange corresponding to the sealing ring at the upper end of the sliding seat 4.

[0033] Both plates 8 are equipped with positioning components that can position the material cart 9.

[0034] The positioning component includes a sliding sleeve 801 that is slidably sleeved on the support plate 8. The sliding sleeve 801 can slide in the vertical direction. A retaining ring 802 is fixed on the support plate 8 below the sliding sleeve 801, and the retaining ring 802 blocks the sliding sleeve 801.

[0035] Multiple sliding rods 803 are elastically slidably connected to the sliding sleeve 801. The sliding rods 803 pass through the sliding sleeve 801, and springs 804 are sleeved on the sliding rods 803. One end of the spring 804 is fixedly connected to the sliding sleeve 801, and the other end of the spring 804 is fixedly connected to the sliding rod 803. The sliding direction of the sliding rod 803 is perpendicular to the sliding direction of the sliding sleeve 801.

[0036] The slide bar 803 is fixedly connected to the guide rail 805. The guide rail 805 is perpendicular to the support plate 8. The upright 903 is concentrically connected to the rotating wheel 904. The guide rail 805 is provided with an arc groove 17 corresponding to the rotating wheel 904. When the hopper 2, tower body 1 and sliding seat 4 are concentric, the rotating wheel 904 is located in the arc groove 17 on one side.

[0037] One end of the guide rail 805 is machined with a guide part. When the material cart 9 drives the hopper 2 to move between the tower body 1 and the sliding seat 4, the guide part can guide the material cart 9.

[0038] The o-hydroxybenzonitrile to be dried is placed into hopper 2, pushing cart 9 to move between tower body 1 and sliding seat 4. Guided by the guide section of guide rail 805 and the rotating wheel 904 on upright 903, cart 9 smoothly enters between the two guide rails 805. After cart 9 enters between the two guide rails 805, the rotating wheel 904 rolls in contact with the guide rails 805, the two guide rails 805 move away from each other, and spring 804 is compressed. When hopper 2 is concentric with tower body 1 and sliding seat 4, rotating wheel 904 is located in the arc-shaped groove 17 of one side of guide rail 805. At this time, cart 9 and hopper 2 are positioned. When the telescopic rod 16 is activated, the sliding seat 4 moves upward. After the sliding seat 4 contacts the lower end of the hopper 2, it drives the hopper 2 and the material cart 9 to move upward. When the hopper 2 and the material cart 9 move upward, the sliding sleeve 801 slides upward on the outside of the support plate 8. When the upper end of the hopper 2 is tightly pressed against the lower end of the tower body 1, the sliding seat 4, the hopper 2 and the tower body 1 are sealed together.

[0039] When the negative pressure fan 7 is started, the air flows through the fixed seat 3, sliding seat 4, hopper 2 and air duct 6 after being purified and heated by the heater purifier 5. The hot air flowing through the hopper 2 can cause the o-hydroxybenzonitrile in the hopper 2 to boil, thereby achieving the drying of o-hydroxybenzonitrile. The material separation device can intercept the o-hydroxybenzonitrile and prevent it from being discharged with the hot air.

[0040] After the o-hydroxybenzonitrile is dried, the telescopic rod 16 is activated to restore the sliding seat 4. After the sliding seat 4 is restored, the hopper 2 can be pulled out from between the tower body 1 and the sliding seat 4 by the material cart 9.

[0041] Example 2: Based on Example 1, referring to... Figure 1 As shown, a right-angle gearbox 13 is concentrically fixed inside the hopper 2, and an agitator 15 is fixed on the vertical output end of the right-angle gearbox 13. The agitator 15 is located above the perforated mesh plate.

[0042] A drive shaft 14 is installed inside the hopper 2. The drive shaft 14 is horizontally arranged. Two support plates 8 are symmetrically arranged according to the axis of the drive shaft 14. The input end of the right-angle gearbox 13 is fixedly connected to one end of the drive shaft 14. The other end of the drive shaft 14 extends to the outside of the hopper 2. The drive shaft 14 is rotatably and sealedly connected to the hopper 2. A second friction disc 12 is concentrically fixed to one end of the drive shaft 14 on the outside of the hopper 2.

[0043] A motor 10 is fixed to the upper end of the heating purifier 5. The output shaft of the motor 10 is parallel to the transmission shaft 14. A first friction disc 11 is concentrically fixed on the output shaft of the motor 10. After the sliding seat 4 and the tower body 1 clamp the hopper 2, the first friction disc 11 and the second friction disc 12 are concentric and in contact. The first friction disc 11 and the second friction disc 12 transmit power through frictional contact.

[0044] When the hopper 2 is concentric with the tower body 1 and the sliding seat 4, the rotor 904 is located in the arc groove 17 of the guide rail 805 on one side. At this time, the first friction disc 11 and the second friction disc 12 are in contact but not concentric.

[0045] When the upper end of hopper 2 is tightly pressed against the lower end of tower body 1, the sliding seat 4, hopper 2, and tower body 1 are sealed together. At this time, the first friction disc 11 and the second friction disc 12 are concentric. The motor 10 is started, and the motor 10 drives the agitator 15 to rotate through the first friction disc 11, the second friction disc 12, the drive shaft 14, and the right-angle gearbox 13. The agitator 15 can stir the o-hydroxybenzonitrile in hopper 2.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A drying device for o-hydroxybenzonitrile, comprising a tower body (1), a material separator installed in the upper end of the tower body (1), the tower body (1) above the material separator being connected to a negative pressure component, a fixed seat (3) provided below the tower body (1), the fixed seat (3) being fixedly connected to the tower body (1) by two vertical support plates (8), a sliding seat (4) being slidably sealed inside the fixed seat (3), the sliding seat (4) being connected to the fixed seat (3) by a telescopic rod (16), the fixed seat (3) being connected to a heating purifier (5), a hopper (2) located between the tower body (1) and the sliding seat (4), the hopper (2) being installed in a material cart (9), and a perforated mesh plate being installed inside the hopper (2), characterized in that, Both plates (8) are equipped with positioning components that can position the material cart (9). A right-angle gearbox (13) is concentrically fixed inside the hopper (2). An agitator (15) is fixed on the vertical output end of the right-angle gearbox (13). The agitator (15) is located above the perforated mesh plate. A drive shaft (14) is installed inside the hopper (2). The drive shaft (14) is horizontally set. The input end of the right-angle gearbox (13) is fixedly connected to one end of the drive shaft (14). The other end of the drive shaft (14) extends to the outside of the hopper (2). The drive shaft (14) and the hopper (2) are connected. The rotating sealed connection is used. One end of the drive shaft (14) on the outside of the hopper (2) is concentrically fixed with a second friction disc (12). The upper end of the heating purifier (5) is fixed with a motor (10). The output shaft of the motor (10) is parallel to the drive shaft (14). The first friction disc (11) is concentrically fixed on the output shaft of the motor (10). After the sliding seat (4) and the tower body (1) clamp the hopper (2), the first friction disc (11) and the second friction disc (12) are concentric and in contact. The first friction disc (11) and the second friction disc (12) transmit power through frictional contact.

2. The o-hydroxybenzonitrile drying apparatus according to claim 1, characterized in that, The negative pressure component includes a duct (6), which is partially connected to the tower body (1) above the material separator, and a negative pressure fan (7) is installed on the duct (6).

3. The o-hydroxybenzonitrile drying apparatus according to claim 1, characterized in that, The material cart (9) includes an inverted U-shaped upper frame (901) and an inverted U-shaped lower frame (902). The hopper (2) is installed between two straight parts of the upper frame (901). The straight parts of the upper frame (901) and the straight parts of the lower frame (902) are fixedly connected by multiple uprights (903). Multiple casters (905) are installed at the lower end of the lower frame (902). The material cart (9) is located between two support plates (8). The two support plates (8) are symmetrically arranged according to the axis of the drive shaft (14).

4. The o-hydroxybenzonitrile drying apparatus according to claim 3, characterized in that, The positioning component includes a sliding sleeve (801) that is slidably fitted on the support plate (8). The sliding sleeve (801) can slide in the vertical direction. A retaining ring (802) is fixed on the support plate (8) below the sliding sleeve (801). The retaining ring (802) blocks the sliding sleeve (801). Multiple sliding rods (803) are elastically slidably connected on the sliding sleeve (801). The sliding direction of the sliding rods (803) is perpendicular to the sliding direction of the sliding sleeve (801). The sliding rods (803) are fixedly connected to the guide rail (805). The guide rail (805) is perpendicular to the support plate (8). A rotating wheel (904) is concentrically rotatably connected on the upright (903). An arc groove (17) corresponding to the rotating wheel (904) is opened on the guide rail (805). When the hopper (2), the tower body (1), and the sliding seat (4) are concentric, the rotating wheel (904) is located in the arc groove (17) on one side of it.

5. The o-hydroxybenzonitrile drying apparatus according to claim 4, characterized in that, The slide rod (803) passes through the slide sleeve (801), and a spring (804) is sleeved on the slide rod (803). One end of the spring (804) is fixedly connected to the slide sleeve (801), and the other end of the spring (804) is fixedly connected to the slide rod (803).

6. The o-hydroxybenzonitrile drying apparatus according to claim 4, characterized in that, One end of the guide rail (805) is machined with a guide part. When the material cart (9) drives the hopper (2) to move between the tower body (1) and the sliding seat (4), the guide part can guide the material cart (9).

7. The o-hydroxybenzonitrile drying apparatus according to claim 1, characterized in that, The lower end of the tower body (1) and the upper end of the sliding seat (4) are both concentrically fixed with sealing rings. The upper end of the hopper (2) is machined with a flange corresponding to the sealing ring at the lower end of the tower body (1), and the lower end of the hopper (2) is machined with a flange corresponding to the sealing ring at the upper end of the sliding seat (4).

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