Mother liquor collecting equipment for benzotriazole production

Abstract

The utility model discloses mother liquor collecting equipment for benzotriazole production, which relates to the technical field of collecting equipment and comprises a collecting tank, an output pipe is arranged at the bottom of the collecting tank, and a second electric valve is arranged on the output pipe. The device is characterized in that the top of the collecting tank is fixedly connected with a treatment tank, the treatment tank is communicated with the interior of the collecting tank, the top of the treatment tank is provided with a filling pipe, the interior of the treatment tank is provided with a separation part, and the separation part is used for separating solid impurities in mother liquor; a slag outlet pipe is arranged at the bottom of the collecting tank. Through the arrangement of the separation part, mother liquor can flow along with the spiral blade after falling on the spiral blade and generate a certain centrifugal force, so that the mother liquor can be diffused outwards, solid impurities can be automatically filtered out from the collected mother liquor, and the mother liquor can be discharged outwards through the slag outlet pipe, namely, impurities and slag can be automatically removed from the outer side of the mother liquor; the filter screen does not need to be manually cleaned or replaced, so that the practical application is greatly facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of collection equipment, and particularly relates to a mother liquor collection device for the production of benzotriazole. Background Art

[0002] Benzotriazole is a colorless or white to light yellowish-brown crystal or powder, with a needle-like crystal form. It is slightly soluble in cold water, ethanol, ether and other solvents, but has a good solubility in some organic solvents such as methanol and ethylene glycol. In the prior art, the classical production method of benzotriazole is the o-phenylenediamine method. In this method, benzotriazole is obtained through a series of steps by the reaction of o-phenylenediamine and sodium nitrite. In this process, the remaining liquid part after the reaction is the mother liquor.

[0003] However, in the production process of benzotriazole, the generated mother liquor may contain various components that need to be treated. Among them, in the process of synthesizing benzotriazole, some solid impurities may be generated. These substances may affect the purity of the mother liquor and the quality of the subsequent products, so they need to be removed or their content reduced. Therefore, it is necessary to perform impurity removal treatment before collection.

[0004] In the prior art, solid impurities are usually filtered by a filter screen. During the treatment process, the mother liquor is blocked on one side of the filter screen by the filter screen. However, with the accumulation over a long time, a large amount of impurities will inevitably accumulate on the filter screen, thereby affecting the passing speed of the mother liquor. Cleaning the filter screen will inevitably require suspending the collection operation, which will affect the collection efficiency and bring a lot of trouble to the work, and thus is not conducive to practical significance. In addition, benzotriazole mother liquor usually has a certain irritation, and it is easy to cause harm to the operators when replacing or cleaning the filter screen, bringing great inconvenience to the actual operation. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a mother liquor collection device for the production of benzotriazole to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A mother liquor collection device for benzotriazole production, including a collection tank, an output pipe is arranged at the bottom of the collection tank, and a second electric valve is arranged on the output pipe; it is characterized in that: a treatment tank is fixedly connected to the top of the collection tank, the interior of the treatment tank is communicated with the interior of the collection tank, a filling pipe is arranged at the top of the treatment tank, and a separation component is arranged inside the treatment tank, and the separation component is used to separate solid impurities in the mother liquor; a slag discharge pipe is arranged at the bottom of the collection tank, and the top of the slag discharge pipe extends into the interior of the collection tank and is fixedly connected with a diversion hopper; a control panel is fixedly connected to the outer wall of the collection tank; the separation component includes a filter cylinder, an installation frame is fixedly connected between the inner sides of the filter cylinder, a spiral blade is fixedly connected to the bottom of the installation frame, and the edge part of the spiral blade is in contact with the inner wall of the filter cylinder.

[0008] Adopting the above technical solution, by setting the separation component, after the mother liquor falls on the spiral blade, it will flow along the spiral blade and generate a certain centrifugal force, so that the mother liquor will diffuse outward, which can automatically filter solid impurities from the collected mother liquor and can be discharged outward through the slag discharge pipe.

[0009] A further improvement of the technical solution of the present utility model lies in that: a sieve hopper is fixedly connected to the bottom of the filter cylinder, a plurality of connecting frames are fixedly connected to the inner side of the sieve hopper, a diversion platform is fixedly connected between the relatively close sides of the connecting frames, the diversion platform is in a frustum-shaped structure and a fillet is arranged at the top.

[0010] Adopting the above technical solution, the filter cylinder and the diversion hopper do not directly contact. On the one hand, it can provide a moving space for the filter cylinder. On the other hand, it can make a small amount of mother liquor dripping onto the diversion platform diffuse toward the sieve hopper after being guided by the diversion platform. The liquid passes through the sieve hopper, while the solid impurities fall into the diversion hopper to avoid excessive mother liquor being discharged.

[0011] A further improvement of the technical solution of the present utility model lies in that: a first electric valve is arranged on the filling pipe, and a liquid level sensor is installed inside the collection tank.

[0012] Adopting the above technical solution, the liquid level situation inside the collection tank is monitored in real time by the liquid level sensor, and after being processed, the flow rate of the first electric valve is controlled through the control panel, so that the mother liquor in the collection tank does not exceed the junction with the treatment tank.

[0013] A further improvement of the technical solution of the present utility model lies in that: a sliding rod is slidably connected to the top of the treatment tank, the bottom of the sliding rod extends into the interior of the treatment tank and is fixedly connected with the installation frame, a backing plate is fixedly connected to the top of the sliding rod, and a spring is sleeved on the outer side of the sliding rod and above the treatment tank.

[0014] With the above technical solution, when the mother liquor falls on the spiral blade from the filling pipe, it impacts the spiral blade, causing the spiral blade, the mounting bracket, and the filter cartridge to move downward accordingly, and causing the slide rod to slide downward, driving the backing plate to press downward. The spring is correspondingly compressed, and the clearance with the decreasing impact will cause the slide rod to reset upward, causing the filter cartridge to continuously vibrate up and down during the injection of the mother liquor, thereby shaking off the impurities adhering to the inner wall of the filter cartridge.

[0015] A further improvement of the technical solution of the present utility model lies in that: a sleeve is fixedly connected to the top of the treatment tank, and the inner wall of the sleeve and the outer side of the backing plate are both set as rough surfaces, and the inner wall of the sleeve is in contact with the outer side of the backing plate.

[0016] With the above technical solution, during the shaking process, the backing plate reciprocates accordingly and moves relative to the sleeve at the same time. The rough surfaces of the contact parts of the two cooperate to make the whole present high-frequency vibration, thereby further shaking off the impurities and avoiding the situation of impurities adhering to the filter cartridge.

[0017] A further improvement of the technical solution of the present utility model lies in that: a retaining ring is fixedly connected to the top of the inner wall of the treatment tank.

[0018] With the above technical solution, it is possible to block the gaps generated during the up and down shaking of the filter cartridge and prevent the mother liquor from overflowing.

[0019] A further improvement of the technical solution of the present utility model lies in that: the thickness of the central part of the spiral blade is greater than the thickness of the edge part.

[0020] With the above technical solution, after the mother liquor enters, it will flow along the spiral blade and generate a certain centrifugal force, and the edge part of the spiral blade is thinner than the central part, so that the mother liquor will diffuse outward. The liquid will pass through the filter cartridge, while the solid impurities will continue to flow along the spiral blade.

[0021] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0022] 1. The present utility model provides a mother liquor collection device for benzotriazole production. By setting a separation component, after the mother liquor falls on the spiral blade, it will flow along the spiral blade and generate a certain centrifugal force, so that the mother liquor will diffuse outward. It can automatically filter out solid impurities from the collected mother liquor and discharge them through the slag discharge pipe, that is, it can automatically remove impurities and discharge slag from the mother liquor outside, and there is no need for manual cleaning or replacement of the filter screen, which greatly facilitates the actual application.

[0023] 2. The present utility model provides a mother liquor collection device for benzotriazole production. By setting a diversion platform and a sieve hopper, a small amount of mother liquor flowing onto the diversion platform can diffuse towards the sieve hopper after being guided by the diversion platform. The liquid passes through the sieve hopper, while the solid impurities fall into the diversion hopper, so as to reduce the discharge of mother liquor accompanied by impurities.

[0024] 3. The present utility model provides a mother liquor collection device for benzotriazole production. By setting a movable filter cylinder, when the mother liquor falls onto the spiral blade from the filling pipe, it impacts the spiral blade, causing the spiral blade, the mounting frame, and the filter cylinder to move downward accordingly, and causing the sliding rod to slide downward, driving the pressing plate to press downward. The spring is correspondingly compressed, and the sliding rod will reset upward with the gap as the impact decreases, so that the filter cylinder continuously jitters up and down during the injection of mother liquor, and thus the impurities attached to the inner wall of the filter cylinder are shaken off.

[0025] 4. The present utility model provides a mother liquor collection device for benzotriazole production. By setting the contact surface between the sleeve and the pressing plate as a rough surface, during the jittering process, the pressing plate makes corresponding reciprocating movements and at the same time moves relative to the sleeve. The rough surface of the contact part between the two makes the whole present high-frequency vibration, and thus further shakes off the impurities, avoiding the situation that the impurities adhere to the filter cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following further illustrates the present utility model with reference to the drawings.

[0027] Figure 1 is the overall structural schematic diagram of the present utility model;

[0028] Figure 2 is one of the sectional structural schematic diagrams of the present utility model;

[0029] Figure 3 is the second sectional structural schematic diagram of the present utility model;

[0030] Figure 4 is the partial split structural schematic diagram of the present utility model;

[0031] Figure 5 is the structural schematic diagram of the separated components of the present utility model;

[0032] Figure 6 is for the present utility model Figure 3 The enlarged view at A in;

[0033] In the figure: 1, collection tank; 2, treatment tank; 3, filling pipe; 4, filter cartridge; 5, spiral blade; 6, slag discharge pipe; 7, diversion hopper; 8, sieve hopper; 9, connecting frame; 10, diversion platform; 11, first electric valve; 12, output pipe; 13, second electric valve; 14, retaining ring; 15, mounting frame; 16, sliding rod; 17, sleeve; 18, backing plate; 19, spring; 20, control panel; 21, liquid level sensor. Detailed implementation mode

[0034] The following further elaborates on the present utility model in conjunction with embodiments:

[0035] Embodiment 1

[0036] As Figures 1 - 6 shown, the present utility model provides a mother liquor collection device for benzotriazole production, including a collection tank 1. An output pipe 12 is provided at the bottom of the collection tank 1, and a second electric valve 13 is provided on the output pipe 12. It is characterized in that: a treatment tank 2 is fixedly connected to the top of the collection tank 1. The interior of the treatment tank 2 is communicated with that of the collection tank 1. A filling pipe 3 is provided at the top of the treatment tank 2. A separation component is provided inside the treatment tank 2, and the separation component is used to separate solid impurities in the mother liquor. A slag discharge pipe 6 is provided at the bottom of the collection tank 1. The top of the slag discharge pipe 6 extends into the interior of the collection tank 1 and is fixedly connected to a diversion hopper 7. A control panel 20 is fixedly connected to the outer wall of the collection tank 1. The separation component includes a filter cartridge 4. A mounting frame 15 is fixedly connected between the inner sides of the filter cartridge 4. A spiral blade 5 is fixedly connected to the bottom of the mounting frame 15, and the edge of the spiral blade 5 is in contact with the inner wall of the filter cartridge 4.

[0037] In this embodiment, by providing the separation component, after the mother liquor falls on the spiral blade 5, it will flow along with the spiral blade 5 and generate a certain centrifugal force, so that the mother liquor will spread outwards, which can automatically filter solid impurities from the collected mother liquor and can be discharged outwards through the slag discharge pipe 6, that is, the impurity removal and slag discharge of the mother liquor can be automatically carried out on the outside, without manual cleaning or filter screen replacement, which greatly facilitates the actual application.

[0038] As Figure 2 and Figure 4 shown, preferably, a sieve hopper 8 is fixedly connected to the bottom of the filter cartridge 4. A plurality of connecting frames 9 are fixedly connected to the inside of the sieve hopper 8. A diversion platform 10 is fixedly connected between the closer sides of the connecting frames 9. The diversion platform 10 has a frustum-shaped structure and a rounded corner is provided at the top.

[0039] In this embodiment, the filter cartridge 4 and the diversion hopper 7 are not in direct contact. On the one hand, it can provide a moving space for the filter cartridge 4. On the other hand, it can enable a small amount of mother liquor dripping onto the diversion table 10 to diffuse towards the sieve hopper 8 after being guided by the diversion table 10. The liquid then passes through the sieve hopper 8, while the solid impurities fall into the diversion hopper 7 to avoid excessive discharge of mother liquor.

[0040] As Figure 1 and Figure 2 shown, preferably, a first electric valve 11 is provided on the filling pipe 3, and a liquid level sensor 21 is installed inside the collection tank 1.

[0041] In this embodiment, the liquid level situation inside the collection tank 1 is monitored in real time by the liquid level sensor 21, and after being processed, the flow rate of the first electric valve 11 is controlled through the control panel 20, so that the mother liquor in the collection tank 1 does not exceed the junction with the treatment tank 2.

[0042] As Figure 4 and Figure 5 shown, preferably, a sliding rod 16 is slidably connected to the top of the treatment tank 2. The bottom of the sliding rod 16 extends into the treatment tank 2 and is fixedly connected to the mounting frame 15. The top of the sliding rod 16 is fixedly connected to a backing plate 18, and a spring 19 is sleeved outside the sliding rod 16 and above the treatment tank 2.

[0043] In this embodiment, when the mother liquor falls onto the spiral blade 5 from the filling pipe 3, it impacts the spiral blade 5, causing the spiral blade 5, the mounting frame 15, and the filter cartridge 4 to move downward accordingly, and causing the sliding rod 16 to slide downward, driving the backing plate 18 to press downward. The spring 19 is correspondingly compressed, and the sliding rod 16 will reset upward with the gap where the impact decreases, so that the filter cartridge 4 continuously jitters up and down during the injection of the mother liquor, thereby shaking off the impurities adhering to the inner wall of the filter cartridge 4.

[0044] Embodiment 2

[0045] As Figure 4 and Figure 5 shown, on the basis of Embodiment 1, the present utility model provides a technical solution: preferably, a housing 17 is fixedly connected to the top of the treatment tank 2. The inner wall of the housing 17 and the outer side of the backing plate 18 are both set as rough surfaces, and the inner wall of the housing 17 is in contact with the outer side of the backing plate 18.

[0046] In this embodiment, during the jittering process, the backing plate 18 makes corresponding reciprocating movements and at the same time moves relative to the housing 17. The rough surfaces of the contact parts of the two cooperate to make the whole present a high-frequency vibration, thereby further shaking off the impurities and avoiding the situation where the impurities adhere to the filter cartridge 4.

[0047] As Figure 3 and Figure 6As shown, preferably, a retaining ring 14 is fixedly connected to the top of the inner wall of the processing tank 2.

[0048] In this embodiment, it can block the gaps generated during the up-and-down shaking of the filter cartridge 4 to prevent the mother liquor from overflowing.

[0049] Embodiment 3

[0050] On the basis of Embodiment 1, the present utility model provides a technical solution: preferably, the thickness of the central part of the spiral blade 5 is greater than that of the edge part.

[0051] In this embodiment, after the mother liquor enters, it will flow along the spiral blade 5 and generate a certain centrifugal force, and the edge part of the spiral blade 5 is thinner than the central part, so that the mother liquor will diffuse outward. Among them, the liquid will pass through the filter cartridge 4, while the solid impurities will continue to flow along the spiral blade 5.

[0052] Next, specifically describe the working principle of the mother liquor collection device for benzotriazole production.

[0053] As Figures 1 - 6 shown, connect the filling pipe 3 to the output end of the front-end operation, and set a pump body between the connected pipelines to facilitate the feeding of the mother liquor into the filling pipe 3. Control the first electric valve 11 to open. The mother liquor enters the filter cartridge 4 through the filling pipe 3 and drops on the spiral blade 5. The position of the filling pipe 3 deviates from the central position of the processing tank 2, so the mother liquor will drop on the blade of the spiral blade 5 (non-central position). The edge part of the spiral blade 5 is in contact with the inner wall of the filter cartridge 4. The mother liquor will flow along the spiral blade 5 and generate a certain centrifugal force, and the edge part of the spiral blade 5 is thinner than the central part, so that the mother liquor will diffuse outward. Among them, the liquid will pass through the filter cartridge 4, while the solid impurities will continue to flow along the spiral blade 5 and until they drop on the sieve hopper 8 and continue to drop downward along the inner wall of the sieve hopper 8 until they are discharged outward through the slag discharge pipe 6, thus automatically removing impurities and discharging slag from the mother liquor, without the need for manual cleaning or filter screen replacement, which greatly facilitates the actual application;

[0054] During the above impurity removal process, the mother liquor drops from the filling pipe 3 onto the spiral blade 5 and impacts the spiral blade 5, causing the spiral blade 5, the mounting frame 15, and the filter cartridge 4 to move downward accordingly, and causing the slide rod 16 to slide downward, driving the backing plate 18 to press downward, and the spring 19 to be correspondingly compressed. And the gap with the decreasing impact will cause the slide rod 16 to reset upward, so that the filter cartridge 4 shakes up and down continuously during the injection of the mother liquor, and then the impurities attached to the inner wall of the filter cartridge 4 are shaken off; during the shaking process, the backing plate 18 makes corresponding reciprocating movements and at the same time moves relative to the sleeve 17, and the rough surfaces of the contact parts of the two cooperate to make the whole present high-frequency vibration, and then further shake off the impurities, avoiding the situation where impurities adhere to the filter cartridge 4;

[0055] During the mother liquor injection process, by controlling the first electric valve 11 to open to an appropriate degree, that is, controlling its flow rate upper limit, the situation of excessive mother liquor accumulating at the filter cartridge 4 and causing obstruction to the centrifugation of the mother liquor is avoided; at the same time, the liquid level sensor 21 monitors the liquid level in the collection tank 1 in real time, and after processing, controls the flow rate of the first electric valve 11 through the control panel 20, so that the mother liquor in the collection tank 1 does not exceed the junction with the treatment tank 2.

[0056] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, modifications or improvements without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A mother liquor collection device for benzotriazole production, comprising a collection tank (1), an output pipe (12) is arranged at the bottom of the collection tank (1), and a second electric valve (13) is arranged on the output pipe (12); characterized in that: The top of the collecting tank (1) is fixedly connected to a processing tank (2), the processing tank (2) is communicated with the interior of the collecting tank (1), a filling pipe (3) is provided at the top of the processing tank (2), a separation component is provided inside the processing tank (2), and the separation component is used to separate solid impurities in the mother liquor; a slag discharge pipe (6) is provided at the bottom of the collecting tank (1), the top of the slag discharge pipe (6) extends to the interior of the collecting tank (1) and is fixedly connected to a guide hopper (7); the outer wall of the collecting tank (1) is fixedly connected to a control panel (20); The separation component comprises a filter cartridge (4), a mounting frame (15) is fixedly connected to the inner side of the filter cartridge (4), a spiral blade (5) is fixedly connected to the bottom of the mounting frame (15), and the edge of the spiral blade (5) is in contact with the inner wall of the filter cartridge (4); The top of the processing tank (2) is slidably connected to a slide bar (16), the bottom of the slide bar (16) extends into the interior of the processing tank (2) and is fixedly connected to the mounting frame (15), the top of the slide bar (16) is fixedly connected to a pad (18), and a spring (19) is sleeved on the outside of the slide bar (16) and located above the processing tank (2); The thickness of the central portion of the spiral blade (5) is greater than the thickness of the edge portion.

2. A mother liquor collecting device for benzotriazole production according to claim 1, characterized in that: A sieve bucket (8) is fixedly connected to the bottom of the filter cartridge (4), a plurality of connecting frames (9) are fixedly connected to the inner side of the sieve bucket (8), a flow guide platform (10) is fixedly connected between adjacent sides of the connecting frames (9), and the flow guide platform (10) is a truncated cone-shaped structure with a rounded corner at the top.

3. A mother liquor collecting device for benzotriazole production according to claim 2, characterized in that: The filling pipe (3) is provided with a first electric valve (11), and the collection tank (1) is internally installed with a liquid level sensor (21).

4. The mother liquor collecting device for benzotriazole production according to claim 3, characterized in that: The top of the treatment tank (2) is fixedly connected with a casing (17), the inner wall of the casing (17) and the outer side of the pad (18) are both arranged as rough surfaces, and the inner wall of the casing (17) and the outer side of the pad (18) are in contact with each other.

5. A mother liquor collecting device for benzotriazole production according to claim 4, characterized in that: A retaining ring (14) is fixedly connected to the top of the inner wall of the processing tank (2).

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