Integrated linkage solid material transfer device and method

Abstract

The present invention provides an integrated linkage solid material transfer device and method, comprising a material transfer shell, an eccentric funnel is provided inside the material transfer shell, a feed port is provided on the material transfer shell above the eccentric funnel, a discharge transition port is provided at the bottom of the eccentric funnel, the center of the discharge transition port is not coaxial with the center of the feed port, the eccentric funnel separates the interior of the material transfer shell into a solid-gas separation bin located above the discharge transition port and a discharge bin located below the discharge transition port, an exhaust port is provided at the top of the solid-gas separation bin, and a nitrogen outlet is provided above the discharge bin; the device achieves the purpose of a safe, reliable, fast and smooth material transfer process through an integrated structural layout and linkage mechanism design.

Description

Technical Field

[0001] The present invention relates to the field of chemical production, and specifically discloses an integrated linkage solid material transfer device and method. Background Art

[0002] In fine chemical production processes, powder material feeding processes are often encountered. Because flammable and explosive organic substances are usually present in the reactor, air is not allowed to enter the reactor during the entire production process. Since the materials are added to the reactor through a material transfer device, the material transfer device is required to ensure smooth transfer of the powder material and reliable air discharge during the powder material feeding process.

[0003] The reactor commonly used in current production is a straight-through chamber, that is, the feed inlet and the discharge port are located in a straight line. This structure has unclear division of labor between the solid-gas separation function and the discharge function, which not only brings difficulties to the design of the device, but also makes the separation effect difficult to control. The specific manifestations are as follows:

[0004] 1. If the solid material is discharged directly, not only will the dispersion effect of the material be poor, but the short material descent time will also cause insufficient solid-gas separation and material stagnation.

[0005] 2. The exhaust gas and nitrogen inlet of the solid feeding device are in the same cavity, and the airflow organization is chaotic, which not only affects the nitrogen sealing effect, but also affects the material transfer process.

[0006] During the material transfer process, the pressure in the solid-gas separation bin and the discharge bin may change due to different feed media, operating conditions and environmental conditions. When the pressure difference between the two bins reaches a certain level, the material transfer will stagnate, affecting the material transfer effect. Summary of the Invention

[0007] In response to the requirement that the powder material transfer process needs to be safe and smooth, the present invention provides an integrated linkage solid material transfer device and method. The device achieves the purpose of a safe, reliable, fast and smooth material transfer process through an integrated structural layout and linkage mechanism design.

[0008] An integrated linkage solid material transfer device comprises a material transfer shell, an eccentric funnel is provided inside the material transfer shell, a feed port is provided on the material transfer shell above the eccentric funnel, a discharge transition port is provided at the bottom of the eccentric funnel, the center of the discharge transition port is not coaxial with the center of the feed port, the eccentric funnel divides the interior of the material transfer shell into a solid-gas separation bin located above the discharge transition port and a discharge bin located below the discharge transition port, an exhaust port is provided on the top of the solid-gas separation bin, and a nitrogen outlet is provided above the discharge bin;

[0009] A flow guide and check plate is also provided inside the material transfer shell. The flow guide and check plate is installed above the eccentric funnel. The flow guide and check plate is used to provide nitrogen to the solid-gas separation bin and prevent air from entering the discharge bin.

[0010] Preferably, a nitrogen supply linkage mechanism is also provided in the material transfer shell, and the nitrogen supply linkage mechanism includes a connecting rod, the rod body of the connecting rod is rotatably connected to the side wall of the material transfer shell, the bottom end of the connecting rod is connected to a material baffle plate that cooperates with the discharge transition port, and the top end of the connecting rod is connected to an air baffle plate that cooperates with the nitrogen outlet.

[0011] Preferably, the air baffle is provided with an automatic reset device.

[0012] Preferably, the automatic resetting device is a weight installed above the air baffle.

[0013] Preferably, the automatic reset device is a spring, the upper end of the spring is connected to the air baffle, and the lower end of the spring is connected to the nitrogen outlet.

[0014] Preferably, there are at least two flow guide and check plates, and the two flow guide and check plates form a nitrogen flow guide channel.

[0015] Preferably, the guide and check plates are of arc-shaped structure, and the arc-shaped inner concave surface of each guide and check plate faces one side of the eccentric funnel.

[0016] Preferably, among the two flow guide and check plates, one end of the first flow guide and check plate is connected to the eccentric funnel, and the other end is suspended in the air; one end of the second flow guide and check plate is connected to the material transfer shell, and the other end is suspended in the air.

[0017] Preferably, the suspended ends of the two flow guide and check plates are staggered with each other.

[0018] The present invention also discloses a material transfer method of the above-mentioned linkage solid material transfer device, and the specific steps are as follows:

[0019] Step 1: Open the exhaust port and nitrogen gas source;

[0020] Step 2: The solid material first enters the solid-gas separation chamber, and after reaching the eccentric funnel, it slides obliquely downward along the side of the eccentric funnel to the discharge transition port. During this process, the air in the material in the solid-gas separation chamber escapes under negative pressure and is discharged through the exhaust port under the action of a one-way airflow.

[0021] In step 3, when the solid material enters the discharge bin from the solid-gas separation bin through the discharge transition port, the material triggers the baffle plate in the nitrogen supply linkage mechanism, and the baffle plate drives the connecting rod to rotate the set angle. Through the linkage action of the connecting rod, the air baffle plate at the upper end of the connecting rod rises, opening the nitrogen outlet, and a part of the nitrogen enters the solid-gas separation bin through the guide check plate, strengthening the flow direction of the airflow organization to ensure that the air in the material flows into the exhaust port, and the other part of the nitrogen fills the discharge bin to balance the pressure of the two bins. When the pressure difference between the two bins is too large due to changes in the feed medium, operating conditions and environmental conditions, resulting in material blockage, the baffle plate loses downward pressure, the connecting rod rotates in the opposite direction, and the air baffle plate drops and resets through the linkage action of the connecting rod, the nitrogen outlet is closed, and the high pressure difference will cause the nitrogen in the discharge bin to quickly enter the solid-gas separation bin, the pressure difference between the two bins is rapidly reduced, the blocking pressure is destroyed, the material is transferred normally, and automatic adjustment of material transfer is realized;

[0022] Step 4: When the material discharge from the discharge bin is completed, the baffle plate loses pressure and resets, driving the connecting rod to rotate to the starting position. The connecting rod drives the upper air baffle to fall back, and the nitrogen outlet is automatically closed.

[0023] Beneficial effects:

[0024] 1. The present invention adopts a dual-cavity structure and an eccentric funnel design, which strengthens the physical separation, prolongs the solid-gas separation time, and improves the solid-gas separation effect.

[0025] 2. The gas channel between the solid-gas separation bin and the discharge bin of the present invention adopts two unidirectional staggered arc plates, which not only makes the airflow organization inside the cavity more reasonable, but also balances the pressure of the two bins, ensuring the safe and smooth material transfer of the device.

[0026] 3. The present invention adopts a linkage mechanism to realize the self-adjustment function of material transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic cross-sectional structural diagram of the present invention;

[0030] Figure 3 This invention Figure 2 Schematic diagram of the AA structure;

[0031] Figure 4 yes Figure 2 Enlarged view of middle B;

[0032] Figure 5 Another preferred option Figure 2 Enlarged view of middle B;

[0033] In the figure, 1. material transfer shell, 2. feed port, 3. exhaust port, 4. discharge transition port, 5. nitrogen inlet, 6. discharge port, 7. solid-gas separation chamber, 8. discharge chamber, 9. eccentric funnel, 10. flow guide check plate, 11. air baffle, 12. automatic reset device, 13. support rod, 14. solid material flow, 15. oxygen, 16. nitrogen, 17. baffle plate, 18. connecting rod. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention.

[0035] like Figures 1 to 5 As shown, the present invention discloses an integrated linkage solid material transfer device, which is a complete set of devices and is installed between the silo and the reactor on site. It is connected to the solid material silo at the top and the reactor at the bottom. The main body of the device is a cylindrical material transfer shell 1 composed of welded steel plates, and the diameter of the cylinder is 500mm. A feed port 2 and an exhaust port 3 are respectively provided on the top of the material transfer shell. A dust collector needs to be installed on the exhaust pipe of the exhaust port, and a micro-negative pressure (generally -5.0kPa~-3.0kPa, which can be adjusted according to the specific material) system is connected to the dust collector. A nitrogen inlet 5 is provided on the side of the material transfer shell 1, and the nitrogen adopts a positive pressure (generally 1.5kPa~3kPa, which can be adjusted according to the specific material). Nitrogen is transmitted in the material transfer shell through the nitrogen inlet 5 and the nitrogen conveying pipeline is changed from horizontal transmission to vertical transmission, and finally discharged at the nitrogen vent at the top of the nitrogen conveying pipeline. A discharge port 6 is provided below the material transfer housing 1. Neither the feed port 2 nor the discharge port 6 is aligned with the vertical axis of the material transfer housing 1, and the axis of the feed port 2 is not coaxial with the axis of the discharge port 6. Specifically, the feed port 2 is positioned to the left of the material transfer housing 1, while the discharge port 6 is positioned to the right of the material transfer housing 1.

[0036] An eccentric funnel 9 is installed inside the material transfer shell 1, 250 mm from the top of the shell. The height of the eccentric funnel is 325 mm, and the axis of the eccentric funnel is coaxial with the axis of the discharge port 6. A discharge transition port 4 is installed at the bottom of the eccentric funnel, 125 mm from the discharge port at the bottom of the material transfer shell 1. The right side of the eccentric funnel 9 is connected to the material transfer shell 1 as a whole, and together with the side wall of the material transfer shell, it forms part of the funnel. The left side of the eccentric funnel 9 has a gap of 143 mm with the side wall of the material transfer shell, and a guide and check plate 10 is installed in this gap. The two side walls of the eccentric funnel, the right side wall of the material transfer shell, and the top wall of the material transfer shell form a solid-gas separation chamber 7 for exhausting air from the material. The left side wall of the eccentric funnel, the left side wall of the material transfer shell, the guide and check plate 10, and the bottom of the material transfer shell form a discharge chamber 8 for equalizing air pressure and discharging material. The flow guide and check plate 10 forms a one-way tortuous passage between the discharge bin 8 and the solid-gas separation bin 7 .

[0037] After the solid material enters the transfer shell 1 from the feed port, it changes from falling vertically downward to falling obliquely from the upper left to the lower right along the inclined side wall structure of the eccentric funnel 9, and then changes to falling vertically downward after passing through the discharge transition port 4 at the bottom of the eccentric funnel. The reversing path in the eccentric funnel can lengthen the solid-gas separation distance and prolong the solid-gas separation time. The heavier solid material falls downward into the discharge transition port, and the lighter air is discharged upward from the exhaust outlet, so that the solid-gas separation effect is better.

[0038] A nitrogen vent is located above the discharge bin. Nitrogen enters the discharge bin 8 through the nitrogen delivery pipeline from the vent, is discharged upward along the nitrogen delivery pipeline, and enters the solid-gas separation bin 7 above after passing through the guide and check plate 10. A sealed end cap is provided at the upper end of the nitrogen delivery pipeline, which is equipped with a nitrogen supply linkage mechanism. The lower end of the nitrogen supply linkage mechanism is equipped with the discharge transition port 4.

[0039] Specifically, the nitrogen supply linkage mechanism includes an air baffle 11, a connecting rod 18, and a material baffle 17. An oblique support rod 13 is installed on the left inner wall of the material transfer housing 1. The end of the support rod away from the inner wall of the material transfer housing is rotatably connected to the connecting rod 18. The air baffle 11 is installed on the top end of the connecting rod, and the material baffle 17 is installed on the bottom end of the connecting rod.

[0040] When the solid material enters the discharge bin 8 through the solid-gas separation bin 7, it falls at the discharge transition port 4 and generates downward pressure on the baffle plate 17 in the nitrogen-passing linkage mechanism. The baffle plate moves downward under the force and drives the connecting rod 18 to rotate clockwise along the connection point between it and the support rod. The air baffle plate 11 at the top of the connecting rod moves upward under the linkage action of the connecting rod rotation to open the nitrogen inlet vent. Part of the nitrogen enters the solid-gas separation bin 7 through the guide check plate 10, strengthening the flow direction of the airflow organization to ensure that the air in the material flows into the exhaust port 3. The other part of the nitrogen fills the discharge bin 8 to balance the pressure of the two bins. When the pressure difference between the two bins is too large due to changes in the feed medium, operating conditions and environmental conditions, resulting in material blockage, the baffle plate 17 loses the downward pressure. Under the action of the automatic reset device 12, the air baffle 11 moves downward and resets, and the nitrogen inlet hole is closed. The high pressure difference will cause the nitrogen in the discharge bin 8 to quickly enter the solid-gas separation bin 7, and the differential pressure between the two bins will decrease rapidly, the blocking pressure will be destroyed, and the material will be transferred normally, realizing automatic adjustment of the material transfer.

[0041] The connecting rod of the nitrogen inlet linkage mechanism adopts a long-arm labor-saving structure. The distance between the support rod 13 and the material baffle plate 17 is greater than the distance between the support rod 13 and the air baffle plate 11, which effectively improves the sensitivity of the nitrogen inlet action of the mechanism. The lever is provided with an automatic reset device 12, and the adjustment mechanism increases the overall adaptability of the device.

[0042] An automatic reset device 12 is provided on the air baffle 11. After the material type is determined, the reset mechanism can be adjusted according to the material characteristics to ensure the sensitivity of the nitrogen supply linkage mechanism and the reliability of the linkage process.

[0043] One of the preferred automatic reset devices is a weight installed above the air baffle. By adjusting the weight of the weight, the reset configuration under different working conditions can be achieved.

[0044] Another preferred automatic reset device comprises a tension spring, the upper end of which is connected to the air baffle 11, and the lower end of which is connected to the nitrogen outlet. Adjusting the expansion and contraction of the tension spring allows for reset configurations under different operating conditions. Specifically, the nitrogen outlet is provided with a slotted connection hole extending vertically, and the tension spring is connected to the slotted connection hole via a set screw. By fixing the lower end of the tension spring at different heights above the slotted connection hole, the tension spring can achieve different expansion and contraction amounts.

[0045] The guide and check plates 10 are two arc-shaped plates, and the inner concave surfaces of the two arc-shaped plates are both facing one side of the eccentric funnel. One end of the first guide and check plate is connected to the eccentric funnel, and the other end is suspended. One end of the second guide and check plate is connected to the material transfer shell, and the other end is suspended. The suspended ends of the two guide and check plates are staggered to form a tortuous nitrogen guide channel. The nitrogen inlet is located below the arc-shaped plate, which can not only ensure that nitrogen flows from the discharge bin 8 to the solid-gas separation bin 7, but also make it easier to achieve a one-way flow of gas in the device, preventing the air in the solid-gas separation bin from flowing into the discharge bin 8 below.

[0046] The process of transferring materials using the above-mentioned linkage solid material transfer device is as follows:

[0047] Step 1: The tail gas outlet is equipped with a micro-negative pressure exhaust valve, and the nitrogen outlet is equipped with a gas source valve. Before the material transfer begins, open the tail gas micro-negative pressure exhaust valve and open the nitrogen gas source valve.

[0048] Step 2. Open the transfer valve at the feed port 2 and the discharge valve at the discharge port 6. The solid material first enters the solid-gas separation bin 7. After reaching the eccentric funnel 9, it slides obliquely downward along the side of the eccentric funnel to the discharge transition port 4. In the solid-gas separation bin 7, the air in the material escapes under negative pressure and is discharged through the exhaust port 3 under the action of the one-way airflow.

[0049] Step 3: When the solid material enters the discharge bin 8 from the solid-gas separation bin 7 through the discharge transition port 4, the material triggers the baffle plate 17 in the nitrogen supply linkage mechanism due to gravity. The baffle plate drives the connecting rod 18 to rotate the set angle. Through the linkage action of the connecting rod, the air baffle plate 11 at the upper end of the connecting rod rises and opens the nitrogen outlet. A part of the nitrogen enters the solid-gas separation bin 7 through the guide check plate 10, strengthening the flow direction of the airflow organization to ensure that the air in the material flows into the exhaust port 3, preventing the air in the solid material from entering the discharge bin 8; the other part of the nitrogen fills the discharge bin 8 to balance the pressure of the solid-gas separation bin 7 and the discharge bin 8, ensuring the smooth transfer of materials between the two bins. After the nitrogen is introduced, the slightly positive pressure state formed in the discharge bin 8 can achieve the smooth completion of the discharge.

[0050] When the pressure difference between the two bins is too large due to changes in the feed medium, operating conditions and environmental conditions, resulting in material blockage, the baffle plate 17 loses its downward pressure, the connecting rod 18 rotates in the opposite direction, and the air baffle plate 11 drops and resets due to the linkage action of the connecting rod, and the nitrogen outlet is closed. The high pressure difference will cause the nitrogen in the discharge bin 8 to quickly enter the solid-gas separation bin 7, and the pressure difference between the two bins will be rapidly reduced, the blocking pressure will be broken, and the material will be transferred normally, realizing automatic adjustment of the material transfer;

[0051] Step 4: When the material discharge from the discharge bin 8 is completed, the baffle plate 17 loses pressure, and the air baffle plate 11 drops to its original position under the action of the reset device 12, driving the connecting rod 18 to rotate to the starting position. The connecting rod drives the lower end of the baffle plate 17 to reset, and the nitrogen outlet is automatically closed.

[0052] Step 5: Close the discharge valve, feed valve (the nitrogen linkage mechanism automatically closes), and nitrogen valve outside the device in sequence, and finally close the exhaust valve after the filter to complete the material transfer.

[0053] Another preferred solution of the device is that the reset device is arranged at the rotation connection between the support rod 13 and the connecting rod 18, that is, a torsion spring is arranged at the rotation connection point, and the connecting rod is connected to the support rod through the torsion spring. When the material is blocked or the discharge is completed, the baffle plate 17 is no longer subjected to the pressure of the material, and the connecting rod is reset under the action of the restoring force of the torsion spring, driving the upper air baffle plate 11 to reset, and the nitrogen outlet is closed.

[0054] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A material transfer method for an integrated linkage solid material transfer device, the device comprising a material transfer shell (1), an eccentric funnel (9) being provided inside the material transfer shell, a feed port (2) being provided above the eccentric funnel on the material transfer shell, a discharge transition port (4) being provided at the bottom of the eccentric funnel, the center of the discharge transition port being not coaxial with the center of the feed port, the eccentric funnel (9) dividing the interior of the material transfer shell into a solid-gas separation bin (7) located above the discharge transition port (4) and a discharge bin (8) located below the discharge transition port, an exhaust port (3) being provided at the top of the solid-gas separation bin (7), and a nitrogen outlet being provided above the discharge bin (8); A flow guide and check plate (10) is further provided inside the material transfer housing (1), and the flow guide and check plate is installed above the eccentric funnel (9). The flow guide and check plate is used to provide nitrogen to the solid-gas separation bin and prevent air from entering the discharge bin; A nitrogen supply linkage mechanism is also provided in the material transfer housing (1), the nitrogen supply linkage mechanism comprising a connecting rod (18), the rod body of the connecting rod being rotatably connected to the side wall of the material transfer housing, the bottom end of the connecting rod being connected to a material baffle plate (17) cooperating with the material discharge transition port (4), and the top end of the connecting rod (18) being connected to an air baffle plate (11) cooperating with the nitrogen outlet; the air baffle plate is provided with an automatic reset device (12); It is characterized by: The specific steps of the material transfer method are as follows: Step 1: Open the exhaust port (3) and the nitrogen gas source; Step 2: The solid material first enters the solid-gas separation chamber (7), and after reaching the eccentric funnel (9), it slides obliquely downward along the side of the eccentric funnel to the discharge transition port (4). During this process, the air in the material in the solid-gas separation chamber (7) escapes under negative pressure and is discharged through the exhaust port (3) under the action of a one-way airflow; Step 3: When the solid material enters the discharge bin (8) from the solid-gas separation bin (7) through the discharge transition port (4), the material triggers the baffle plate (17) in the nitrogen supply linkage mechanism, and the baffle plate drives the connecting rod (18) to rotate the set angle. Through the linkage action of the connecting rod (18), the air baffle plate (11) at the upper end of the connecting rod rises, opening the nitrogen outlet. A part of the nitrogen enters the solid-gas separation bin (7) through the guide check plate (10), strengthening the flow direction of the air flow organization to ensure that the air in the material flows into the exhaust port, and the other part of the nitrogen fills the discharge bin. (8) It is used to balance the pressure of the two bins. When the pressure difference between the two bins is too large due to changes in the feed medium, operating conditions and environmental conditions, resulting in material blockage, the baffle plate (17) loses the downward pressure, the connecting rod (18) rotates in the opposite direction, and the air baffle plate (11) drops and resets due to the linkage action of the connecting rod. The nitrogen outlet is closed, and the high pressure difference causes the nitrogen in the discharge bin (8) to quickly enter the solid-gas separation bin (7). The pressure difference between the two bins is quickly reduced, the blocking pressure is destroyed, and the material is transferred normally, realizing automatic adjustment of the material transfer; Step 4: When the material discharge from the discharge bin (8) is completed, the baffle plate (17) loses pressure and resets, driving the connecting rod (18) to rotate back to the starting position. The connecting rod drives the air baffle plate (11) at the upper end to fall back, and the nitrogen outlet is automatically closed.

2. The material transfer method of the integrated linkage solid material transfer device according to claim 1, characterized in that: The automatic resetting device is a weight installed above the air baffle.

3. The material transfer method of the integrated linkage solid material transfer device according to claim 1, characterized in that: The automatic reset device is a spring, the upper end of the spring is connected to the air baffle (11), and the lower end of the spring is connected to the nitrogen outlet.

4. The material transfer method of the integrated linkage solid material transfer device according to claim 1, characterized in that: The guide and check plates (10) are at least two in number, and the two guide and check plates form a nitrogen guide channel.

5. The material transfer method of the integrated linkage solid material transfer device according to claim 4, characterized in that: The flow guide and check plate (10) is an arc-shaped structure, and the arc-shaped inner concave surface of each flow guide and check plate faces one side of the eccentric funnel (9).

6. The material transfer method of the integrated linkage solid material transfer device according to claim 4, characterized in that: Of the two flow guide and check plates (10), one end of the first flow guide and check plate is connected to the eccentric funnel (9) and the other end is suspended in the air; one end of the second flow guide and check plate is connected to the material transfer housing (1) and the other end is suspended in the air.

7. The material transfer method of the integrated linkage solid material transfer device according to claim 6, characterized in that: The suspended ends of the two flow guide and check plates (10) are arranged in a staggered manner.

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