Ammonium perchlorate crystallization quality monitoring and metering system and monitoring method

Abstract

The invention discloses an ammonium perchlorate crystallization quality monitoring and metering system and a monitoring method, and relates to the field of ammonium perchlorate crystallization quality monitoring and metering systems.The number of metering pump devices is two, and one metering pump device is installed at the bottom of a reactor and used for metering the amount of ammonium perchlorate discharged into a collecting tank; the other group of metering pump device is arranged on the outer surface of the byproduct collecting box and is used for metering the amount of ammonium perchlorate in the ammonium perchlorate layer; according to the invention, the amount of ammonium perchlorate measured by the metering device is more accurate, the problem that materials enter the communication port downwards to cause residues is reduced and avoided, and the defect that mechanical energy is wasted in the using process of the metering device is made up.

Description

Technical Field

[0001] The invention relates to the technical field of ammonium perchlorate crystal quality monitoring and metering systems, and in particular to an ammonium perchlorate crystal quality monitoring and metering system and a monitoring method. Background Art

[0002] In the metering pump device used in the ammonium perchlorate crystal quality monitoring and metering system in the prior art, a connecting port needs to be opened between the pumping metering chamber and the external pipeline. When the piston rod moves toward the inside of the pumping metering chamber, a part of the material will be pushed into the connecting port, leaving residue. Although the volume of the connecting port is reduced in the prior art, there is still a part of the residual material, resulting in a certain degree of deviation in the metering data.

[0003] To this end, we provide an ammonium perchlorate crystal quality monitoring and metering system and a monitoring method to solve the above problems. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides an ammonium perchlorate crystal quality monitoring metering system and monitoring method, which solves the problem that the metering data has a certain degree of deviation due to the structural defects of the metering pump device.

[0005] In order to achieve the above object, the present invention adopts an ammonium perchlorate crystal quality monitoring and metering system, comprising: a reactor, a collecting tank, a cooling device, a byproduct collecting box, an oscillation box and a metering pump device, wherein sodium perchlorate and ammonium chloride are added into the reactor, and sodium perchlorate and ammonium chloride undergo double decomposition reaction to form filtrate and filter residue; The collecting tank is located below the reactor and is for the filter residue to enter; The cooling device is located at one side below the reactor and is used for the filtrate to enter. The filtrate enters the cooling device to cool down and gradually precipitate byproducts, which include sodium chloride and a small amount of ammonium perchlorate. The byproduct collection box is located on one side of the cooling device, and the oscillation box is located inside the byproduct collection box. The byproduct is transported into the oscillation box for oscillation and stratification to form a sodium chloride layer and an ammonium perchlorate layer. The ammonium perchlorate is located on the upper layer of the sodium chloride, and the sodium chloride and the ammonium perchlorate are separated. The metering pump device is provided with two groups, one of which is installed at the bottom of the reactor and is used to measure the amount of ammonium perchlorate discharged into the collection tank; the other group of metering pump devices is installed on the outer surface of the byproduct collection box and is used to measure the amount of ammonium perchlorate in the ammonium perchlorate layer.

[0006] As a further optimization of the above scheme, the metering pump device includes a motor, a mounting seat, a power shell, a first docking pipe, a second docking pipe and an external pipe. A mounting seat is provided at one end of the motor, and the power shell is fixedly installed on the mounting seat. A first docking pipe is integrally provided on one side of the power shell, and the second docking pipe is provided at an end of the first docking pipe away from the power shell. The external pipe is provided with one on both the upper and lower sides of the second docking pipe, and the two external pipes are provided with a first internal thread at one end away from the second docking pipe. The first internal thread is docked with an external pipe, and when ammonium perchlorate is discharged, the ammonium perchlorate passes through the external pipe.

[0007] As a further optimization of the above scheme, a rocker arm is provided in the power shell, one end of the rocker arm is provided with a first hole, and the other end of the rocker arm is provided with a second hole. The end of the rocker arm with the second hole is movably extended into the first docking pipe, the rotating shaft on the motor movably penetrates into the interior of the power shell, and a first shaft is fixedly provided at the eccentric end of the rotating shaft on the motor, a ball bearing is sleeved on the outer ring of the first shaft, and the ball bearing is installed in the first hole. A piston rod is telescopically provided in the middle of the second docking pipe, one end of the piston rod is fixedly provided with a second shaft, and the second shaft is rotatably provided in the second hole, and the other end of the piston rod is fixedly provided with a rubber pad, and the rubber pad is slidably provided in the second docking pipe, and a pumping metering chamber is formed between the end of the rubber pad away from the piston rod and the inner wall of the second docking pipe.

[0008] As a further optimization of the above solution, the upper and lower ends of the second docking pipe are both provided with second internal threads for connecting the end of the external pipe, and the external pipe is connected to the pumping metering chamber inside the second docking pipe.

[0009] As a further optimization of the above scheme, a clamp is provided inside one end of the upper and lower external pipes close to the second docking pipe, and the clamp includes a first clamp ring, an intermediate base ring and a second clamp ring. The first clamp ring and the second clamp ring are respectively attached to the two ends of the intermediate base ring, and the clamp is clamped inside the external pipe. The inner diameters of the first clamp ring and the second clamp ring are smaller than the inner diameter of the intermediate base ring. A sealing ball is provided in the intermediate base ring, and the diameter of the sealing ball is larger than the inner diameters of the first clamp ring and the second clamp ring.

[0010] As a further optimization of the above scheme, a rotating rod is rotatably arranged on the inner wall of the pumping metering chamber, and a movable baffle is fixedly arranged on the rotating rod. The movable baffle movably blocks the upper surface of the connecting port below the pumping metering chamber, and one end of the rotating rod on the movable baffle is in contact with the inner wall of the pumping metering chamber away from the piston rod.

[0011] As a further optimization of the above scheme, the blocking ball includes a core body and an outer protective shell, the core body is a cylindrical structure, and the outside of the core body is provided with an external thread, the outer protective shell includes two mutually symmetrical hemispherical shell structures, the inside of the hemispherical shell structure is a circular groove, the inner wall of the circular groove is provided with an internal thread structure, and the hemispherical shell structure is rotatably installed on the outside of the core body.

[0012] As a further optimization of the above solution, flanges are integrally provided at the ends of the first docking pipe and the second docking pipe that are close to each other, a thermal insulation bridge ring is provided between the two flanges, and the thermal insulation bridge ring is fixed to the two flanges by screws.

[0013] As a further optimization of the above scheme, a discharge hole and a suction hole are respectively provided on the top and side of the power shell, and a first one-way valve is provided in the discharge hole, which can allow the air inside the power shell to be discharged to the outside of the power shell in one direction, and a second one-way valve is provided in the suction hole, which can allow the external air to enter the power shell in one direction, and the suction hole is conical, and the small end of the suction hole is connected to the interior of the power shell.

[0014] The invention also discloses a monitoring method for an ammonium perchlorate crystal quality monitoring and metering system, which is applicable to the ammonium perchlorate crystal quality monitoring and metering system.

[0015] The ammonium perchlorate crystal quality monitoring and metering system and monitoring method of the present invention have the following beneficial effects: The present invention discloses a system and method for monitoring the quality of ammonium perchlorate crystals. A metering pump device is provided at the outlet of the reactor into a collection tank and at the outlet of a material suction fan. The amount of ammonium perchlorate discharged twice is measured to obtain the total amount of ammonium perchlorate, and it is judged whether the amount of ammonium perchlorate produced by a batch of raw materials meets the standard. Each time the piston rod moves back and forth, the amount of material pushed out is fixed, which can be used for measuring the material. In the present invention, when the piston rod moves in a direction away from the pumping metering chamber, the material in the external pipe below will push the movable baffle to open and enter the interior of the pumping metering chamber from the side close to the rubber pad. When the material completely enters the pumping metering chamber, the movable baffle uses its own gravity and the pressing force of the material to reset and can timely block the connecting port, thereby avoiding the phenomenon that the material in the pumping metering chamber remains in the connecting port; when the piston rod moves toward the inner direction of the pumping metering chamber, the material in the pumping metering chamber is completely pushed into the external pipe above. Although the movable baffle may open upward during this process, since the material is located above the movable baffle, the process of the movable baffle opening upward can also further drive the material to be pushed into the external pipe above, thereby avoiding the problem of residual material entering the connecting port downward; The outer protective shell is made of rubber and other materials, and has a certain elastic deformation ability. When the outer protective shell is in contact with the corresponding first clamp ring or the middle part of the second clamp ring, a good seal can be achieved. Even if the outer surface of the outer protective shell is damaged, the outer protective shell can be elastically deformed to make up for the defect, so a good sealing effect can be achieved, which increases the service life of the sealing ball and reduces the phenomenon of inaccurate measurement data caused by poor sealing. The purpose of synchronously dissipating heat to the rocker arm inside the power housing and the vicinity of the first shaft is achieved, and the mechanical energy in the reciprocating process of the piston rod is fully utilized, thereby reducing the waste of mechanical energy; The present invention utilizes an incompletely sealed power shell to fully reduce the resistance of the piston rod during the reciprocating movement.

[0016] With reference to the following description and drawings, a specific embodiment of the present invention is disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereby, and within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a metering pump device of the present invention from one perspective; Figure 2 It is a schematic structural diagram of the metering pump device of the present invention from another perspective; Figure 3 A top view of a metering pump device of the present invention; Figure 4 For the present invention Figure 3 Cross-section at AA; Figure 5 It is a schematic diagram of the internal structure of the second docking pipeline and the external pipeline of the present invention; Figure 6 It is a schematic diagram of the structure of the blocking ball of the present invention; Figure 7 It is an axial cross-sectional view of the sealing ball of the present invention; Figure 8 A radial cross-sectional view of the sealing ball of the present invention; Fig. 9 It is the ammonium perchlorate crystallization process diagram of the present invention; Fig.10 It is a schematic diagram of the structure of the ammonium perchlorate crystal quality monitoring and metering system of the present invention; Fig.11 This is a schematic diagram of the internal structure of the by-product collection box of the present invention; Fig.12 For the present invention Fig.11 Enlarged schematic diagram of the structure at H in the middle.

[0018] In the figure: 100, reactor; 200, collection tank; 300, cooling equipment; 400, by-product collection box; 401, oscillator; 500, oscillation box; 600, metering pump device; 601, material suction fan; 602, soft feed pipe; 603, electric push rod; 604, suction ring; 605, suction hole; 606, height sensor; 1, motor; 2, mounting seat; 3, power shell; 4, first docking pipe; 5, second docking pipe; 6, external pipe; 7, first internal thread; 8, flange; 9, thermal insulation bridge ring; 10 , suction hole; 11, discharge hole; 12, piston rod; 13, rubber pad; 14, rocker arm; 15, first shaft; 16, first hole; 17, ball bearing; 18, second hole; 19, second shaft; 20, shaft seal; 21, first one-way valve; 22, second one-way valve; 23, second internal thread; 24, pumping metering chamber; 25, connecting port; 26, rotating rod; 27, movable baffle; 28, blocking ball; 29, clamp; 30, first clamping ring; 31, intermediate base ring; 32, second clamping ring; 33, outer protective shell; 34, core body. DETAILED DESCRIPTION

[0019] Please refer to the instruction manual Figure 1-8 The present invention provides a technical solution: an ammonium perchlorate crystal quality monitoring and metering system and a monitoring method, comprising: When producing ammonium perchlorate by cold double decomposition, sodium perchlorate (NaClO 4 ) and ammonium chloride (NH 4 Cl) is added to the reactor 100 to perform double decomposition reaction, and filtered and washed to form a filtrate and a filter residue, and the filter residue is dried to form ammonium perchlorate (NH 4 C1O 4 The filtrate is a by-product, the main component of which is sodium chloride (NaCl), and the by-product also contains a small amount of ammonium perchlorate (NH 4 C1O 4 ).

[0020] In order to make the sodium chloride (NaCl) produced as a byproduct of ammonium perchlorate meet the industrial salt standard, the filtrate is treated by a cold crystallization process, and the filter residue is first filtered to remove large particles of ammonium perchlorate (NH 4 C1O 4 ) impurities, and then a clear byproduct solution is obtained, but the byproduct solution still contains a small amount of ammonium perchlorate (NH 4 C1O 4 ), therefore, the byproduct solution is placed in a cooling device 300 to slowly lower the solution temperature, and as the temperature decreases, sodium chloride (NaCl) gradually crystallizes and precipitates.

[0021] Benefits of cold crystallization process: It can replace the existing evaporation crystallization process which is prone to the occurrence of ammonium perchlorate (NH 4 C1O 4 ) The method of thermal decomposition to produce various impurities such as nitrogen, oxygen, chlorine and water; The crystallized sodium chloride (NaCl) contains a small amount of ammonium perchlorate (NH 4 C1O 4 ), and the two are placed in the oscillator byproduct collection box 400 for oscillation, so that sodium chloride (NaCl) and ammonium perchlorate (NH4ClO4) are separated into layers, wherein ammonium perchlorate (NH 4 C1O 4 )Density is 1.95g / cm 3 , the density of sodium chloride (NaCl) is 2.165 g / cm³, and the density of ammonium perchlorate (NH 4 C1O 4 ) is located on the upper layer of sodium chloride (NaCl), and the layers of sodium chloride (NaCl) and ammonium perchlorate (NH 4 C1O 4 ).

[0022] Since sodium chloride (NaCl) and ammonium perchlorate (NH 4 C1O 4 ) are both white crystalline powders, which are difficult to distinguish from each other in appearance. The water solubility test is usually used to distinguish the two. 4 C1O 4 ) is obviously not suitable for the separation and collection of the two mixed components in the industrial production process. Therefore, the present invention is provided with a wind separation system, which includes a material suction fan 601, a soft material conveying pipe 602 and a suction ring 604. The by-product collection box 400 is provided with an oscillating box 500, and the bottom of the oscillating box 500 is provided with an oscillator 401 to separate the crystallized sodium chloride (NaCl) and ammonium perchlorate (NH 4 C1O 4 ) are uniformly put into the oscillation box 500, and the oscillator 401 is started to oscillate the oscillation box 500. After oscillating for a certain period of time, sodium chloride (NaCl) and ammonium perchlorate (NH 4 C1O 4) layering; the material suction fan 601 is installed on the outside of the by-product collection box 400, the material suction fan 601 is connected with the soft feed pipe 602, the soft feed pipe 602 is connected with the suction ring 604, the suction ring 604 is located in the oscillation box 500, and the bottom of the suction ring 604 is provided with a plurality of suction holes 605, the suction ring 604 is annular in structure, and a height sensor 606 is provided at the outer ring of the suction ring 604, and an electric push rod 603 is also fixedly installed on the top of the by-product collection box 400, the electric push rod 603 is vertically distributed, and the bottom of the electric push rod 603 is connected to the upper surface of the suction ring 604.

[0023] During operation, the height sensor 606 monitors the height between the material and the oscillation box 500 in real time, controls the height between the suction ring 604 and the material in the oscillation box 500 to be always about 1 cm, and then turns on the material suction fan 601. Since the sodium chloride (NaCl) on the upper layer of the material is lighter, the ammonium perchlorate (NH 4 C1O 4 ) will be absorbed into the soft conveying pipe 602 and then discharged along the outlet of the material suction fan 601, while sodium chloride (NaCl) is heavier and will not be sucked into the soft conveying pipe 602, achieving the goal of sodium chloride (NaCl) and ammonium perchlorate (NH 4 C1O 4 ) separation.

[0024] It should be noted that the principle of controlling the height of the suction ring 604 and the material in the oscillation box 500 to always be about 1 cm is as follows: when the height sensor 606 detects that the height of the suction ring 604 from the upper surface of the material exceeds the range of 0.8-1.2 cm, this information is fed back to the controller, and the controller controls the electric push rod 603 to start, driving the suction ring 604 to rise or fall, thereby adjusting the distance between the suction ring 604 and the material to ensure that the height of the suction ring 604 is appropriate, so that the ammonium perchlorate (NH4Cl4) on the upper layer of the material can be 4 C1O 4 ) is successfully sucked in from the suction hole 605; the controller is a KZ-01 electric telescopic push rod controller, or a controller of a different brand and manufacturer can be selected according to actual needs. It is a conventional selection based on actual needs and will not be described here.

[0025] The suction force of the material suction fan 601 needs to be calculated according to the actual pipeline layout. The following formula can be used to calculate the suction force of the material suction fan 601, which can ensure that only the density of 1.95g / cm 3 Ammonium perchlorate (NH 4 C1O 4 ) Aspirate: Ps=ρvdΔp Where Ps is the suction force (Pa), ρ is the dust density (kg / m³), v is the gas velocity (m / s), d is the inner diameter of the pipe (m), and Δp is the pipe pressure drop (Pa).

[0026] Assuming the length of the pipeline is 200m, the inner diameter is 0.5m, the gas velocity is 20m / s, the dust density is 1.2kg / m³, the dust concentration is 10mg / m³, and the fan static pressure is 1000Pa, the suction force is calculated as follows: First, the pipeline resistance needs to be calculated. Based on the dust concentration and pipeline length, it can be calculated: .

[0027] Next, you need to calculate the pipe friction pressure drop. Based on the inner diameter, flow rate, and length, we get: .

[0028] Finally, according to the formula, the suction force is: .

[0029] The ammonium perchlorate crystal quality monitoring and metering system of the present invention further comprises a metering component, which is used to measure the ammonium perchlorate (NH 4 C1O 4 ) and ammonium perchlorate (NH 4 C1O 4 ), thereby obtaining ammonium perchlorate (NH 4 C1O 4 ) to determine whether it meets the quality production standards, replacing the existing technology of only measuring the amount of ammonium perchlorate (NH 4 C1O 4 ) method, the measurement is more accurate, and the ammonium perchlorate (NH 4 C1O 4 The separation of sodium chloride (NaCl) and by-product sodium chloride (NaCl) is simple and convenient, and the obtained by-product sodium chloride (NaCl) can be directly used as industrial salt raw material, which meets the quality standards of industrial salt and does not need to be processed again.

[0030] In the present invention, a collecting tank 200 is provided below the reactor 100, and the filter residue is dried to form ammonium perchlorate (NH 4 C1O 4 ) is discharged into the collection tank 200 for collection, one side of the reactor 100 is connected to the cooling device 300, and the filtrate is discharged into the cooling device 300 to form sodium chloride (NaCl) and ammonium perchlorate (NH 4 C1O 4 ), a material pump is provided on one side of the cooling device 300, through which the material pump is used to pump sodium chloride (NaCl) and ammonium perchlorate (NH 4 C1O 4) are sent into the oscillation box 500, and the oscillator 401 oscillates the material in the oscillation box 500, and ammonium perchlorate (NH 4 C1O 4 ) and sodium chloride (NaCl) are layered upper and lower.

[0031] A metering pump device 600 is provided at the outlet of the reactor 100 into the collecting tank 200 and at the outlet of the material suction blower 601 to meter the ammonium perchlorate (NH 4 C1O 4 ) to obtain ammonium perchlorate (NH 4 C1O 4 ) to determine the total amount of ammonium perchlorate (NH 4 C1O 4 ) whether the quantity meets the standard.

[0032] The metering pump device 600 of the present invention comprises a motor 1, a mounting seat 2, a power shell 3, a first docking pipe 4, a second docking pipe 5 and an external pipe 6. A mounting seat 2 is provided at one end of the motor 1, and a power shell 3 is fixedly installed on the mounting seat 2. A first docking pipe 4 is integrally provided on one side of the power shell 3. The second docking pipe 5 is provided at one end of the first docking pipe 4 away from the power shell 3. An external pipe 6 is provided on both upper and lower sides of the second docking pipe 5. The ends of the two external pipes 6 away from the second docking pipe 5 are both provided with a first internal thread 7. The first internal thread 7 is docked with an external pipe. When ammonium perchlorate (NH4Cl4) is discharged, 4 C1O 4 ) when ammonium perchlorate (NH 4 C1O 4 ) passes through the external pipe 6, a rocker arm 14 is provided in the power shell 3, one end of the rocker arm 14 is provided with a first hole 16, and the other end of the rocker arm 14 is provided with a second hole 18. The end of the rocker arm 14 with the second hole 18 is movably extended into the first docking pipe 4, and the rotating shaft on the motor 1 is movably penetrated into the interior of the power shell 3, and a first shaft 15 is fixedly provided at the eccentric end of the rotating shaft on the motor 1, and a ball bearing 17 is sleeved on the outer ring of the first shaft 15, and the ball bearing 17 is installed in the first hole 16.

[0033] Among them, the ends of the first docking pipe 4 and the second docking pipe 5 that are close to each other are integrally provided with flanges 8, and a thermal insulation bridge ring 9 is arranged between the two flanges 8. The thermal insulation bridge ring 9 and the two flanges 8 are fixed by screws. A piston rod 12 is telescopically arranged in the middle of the second docking pipe 5, and a second shaft 19 is fixedly arranged at one end of the piston rod 12. The second shaft 19 is rotatably arranged inside the second hole 18. A rubber pad 13 is fixedly arranged at the other end of the piston rod 12. The rubber pad 13 is slidably arranged inside the second docking pipe 5. A pumping metering chamber 24 is formed between the end of the rubber pad 13 away from the piston rod 12 and the inner wall of the second docking pipe 5. The upper and lower ends of the second docking pipe 5 are provided with second internal threads 23 for connecting the end of the external pipe 6, and the external pipe 6 is connected to the pumping metering chamber 24 inside the second docking pipe 5.

[0034] A clamp 29 is provided inside the ends of the upper and lower external pipes 6 close to the second docking pipe 5. The clamp 29 includes a first clamp ring 30, an intermediate base ring 31 and a second clamp ring 32. The first clamp ring 30 and the second clamp ring 32 are respectively attached to the two ends of the intermediate base ring 31. The clamp 29 is clamped in the inside of the external pipe 6. The inner diameters of the first clamp ring 30 and the second clamp ring 32 are smaller than the inner diameter of the intermediate base ring 31. A blocking ball 28 is provided in the intermediate base ring 31. The diameter of the blocking ball 28 is larger than the inner diameter of the first clamp ring 30 and the second clamp ring 32. When working, the motor 1 is started, and the rotating shaft of the motor 1 drives the first shaft 15 to move in a circle. Since the first shaft 15 is installed in the first hole 16, when the first shaft 15 moves in a circle, the rocker arm 14 will intermittently push the piston rod 12 to move back and forth, thereby compressing or releasing the pumping metering chamber 24. When the piston rod 12 moves away from the pumping metering chamber 24 and releases the pumping metering chamber 24, a negative pressure is generated inside the pumping metering chamber 24. Under the action of the negative pressure, the sealing ball 28 in the upper external pipe 6 falls due to gravity and seals the middle part of the second clamping ring 32 in the upper external pipe 6, and the material enters the pumping metering chamber 24 from the external pipe 6 at the bottom; when the piston rod 12 moves toward the inside of the pumping metering chamber 24 and compresses the pumping metering chamber 24, the sealing ball 28 in the lower external pipe 6 seals the middle part of the first clamping ring 30 in the lower external pipe 6 due to the thrust. At this time, the material in the pumping metering chamber 24 can only be discharged from the upper external pipe 6, and the sealing ball 28 in the upper external pipe 6 is lifted by the material, and the material can be smoothly discharged upward through the external pipe 6. Each time the piston rod 12 moves back and forth, the amount of material pushed out is fixed, thereby completing the metering of the material.

[0035] Such metering devices in the prior art have the following disadvantages: Since the pumping metering chamber 24 and the external pipe 6 need to be connected by a connecting port 25 on the inner wall of the second docking pipe 5, when the piston rod 12 moves toward the inside of the pumping metering chamber 24, a portion of the material will be pushed into the connecting port 25, and there will be residue. Although the volume of the connecting port 25 is reduced in the prior art, there is still a portion of residual material, resulting in a certain degree of deviation in the metering data. Therefore, in the present invention, a rotating rod 26 is rotatably arranged on the inner wall of the pumping metering chamber 24, and a movable baffle 27 is fixedly arranged on the rotating rod 26. The movable baffle 27 movably blocks the upper surface of the connecting port 25 below the pumping metering chamber 24, and one end of the movable baffle 27 with the rotating rod 26 is in contact with the inner wall of the pumping metering chamber 24 away from the piston rod 12; when the piston rod 12 moves in the direction away from the pumping metering chamber 24 When the piston rod 12 is moved, the material in the external pipe 6 below will push the movable baffle 27 to open and enter the interior of the pumping metering chamber 24 from the side close to the rubber pad 13. When the material completely enters the pumping metering chamber 24, the movable baffle 27 uses its own gravity and the pressing force of the material to reset and can timely block the connecting port 25, thereby avoiding the phenomenon that the material in the pumping metering chamber 24 remains in the connecting port 25; when the piston rod 12 moves toward the inner direction of the pumping metering chamber 24, the material in the pumping metering chamber 24 is completely pushed into the external pipe 6 above. Although the movable baffle 27 may open upward during this process, since the material is located above the movable baffle 27, the process of the movable baffle 27 opening upward can also further drive the material to be pushed into the external pipe 6 above, thereby avoiding the problem of material entering the connecting port 25 downward and remaining.

[0036] Furthermore, in the present invention, the first clamping ring 30, the intermediate base ring 31 and the second clamping ring 32 are all detachable. The first clamping ring 30 and the second clamping ring 32 are wearing parts, which are convenient for regular replacement and reduce the cost of use, replacing the method of using an integrated clamping member 29 in the prior art; and the connection and disassembly between the external pipe 6 and the second docking pipe 5 are convenient. During the process of disassembling and assembling the external pipe 6, the clamping member 29 can be smoothly removed without the need for separate assembly and disassembly, which is highly practical.

[0037] Considering that the blocking ball 28 will collide with the first clamping ring 30 and the second clamping ring 32 during the lifting process, the surface of the blocking ball 28 is easily damaged. When the blocking ball 28 is damaged, the sealing performance will decrease, which will also reduce the accuracy of the metering data. Therefore, in order to solve the problem of inaccurate metering data caused by the damage of the blocking ball 28, the present invention provides the blocking ball 28 with two parts. The first part: the core body 34, the core body 34 is a cylindrical structure, the outside of the core body 34 is provided with an external thread, and can be made of hard plastic or metal material; the second part: the outer protective shell 33, the outer protective shell 33 is a symmetrical hemispherical shell structure, the hemispherical The interior of the hemispherical shell structure is a circular groove, and the inner wall of the circular groove is provided with an internal thread structure. The hemispherical shell structure can be rotatably installed on the outside of the core body 34 to form a blocking ball 28, and the outer protective shell 33 is made of rubber and other materials, and has a certain elastic deformation ability. When the outer protective shell 33 is in contact with the corresponding first retaining ring 30 or the middle of the second retaining ring 32, a good seal can be achieved. Even if the outer surface of the outer protective shell 33 is damaged, since the outer protective shell 33 can be elastically deformed to make up for the defect, a good sealing effect can be achieved, which increases the service life of the blocking ball 28 and reduces the phenomenon of inaccurate metering data caused by poor sealing.

[0038] It is worth mentioning that due to the detachable connection between the outer protective shell 33 and the core 34, when the outer protective shell 33 is severely worn, it can be replaced separately, further reducing the overall cost.

[0039] Since sodium chloride (NaCl) decomposes to generate nitrogen, oxygen, chlorine and water when heated, it produces impurities and is inconvenient to store. The mechanical equipment used in the industrial production process will inevitably have the problem of excessive heat due to the operation of the motor. Therefore, in the present invention, the two flanges 8 are provided with a heat-insulating bridge ring 9, which can block the transfer of heat and reduce the influence of the heat generated by the motor 1 on the external pipe 6, so that the ammonium perchlorate (NH 4 C1O 4 ) is not affected by the temperature of mechanical equipment, which increases the 4 C1O 4 ) purity.

[0040] Furthermore, a discharge hole 11 and a suction hole 10 are respectively provided on the upper and side surfaces of the power shell 3, and a first one-way valve 21 is provided in the discharge hole 11, and the first one-way valve 21 can make the air inside the power shell 3 be discharged to the outside of the power shell 3 in one direction, and a second one-way valve 22 is provided in the suction hole 10, and the second one-way valve 22 can make the external air enter the power shell 3 in one direction, and the suction hole 10 is conical, and the small end of the suction hole 10 is connected with the inside of the power shell 3; in conjunction with the reciprocating movement of the piston rod 12, the cavity inside the power shell 3 is also reciprocated. The power shell 3 is compressed and released. During the release process, the external air enters the power shell 3 through the suction hole 10. Since the suction hole 10 is conical, the air is cooled when entering the power shell 3 through the suction hole 10. The cooled air enters the power shell 3. As the power shell 3 is compressed, the high-temperature air inside the power shell 3 is discharged from the discharge hole 11, thereby achieving the purpose of synchronously dissipating heat to the rocker arm 14 and the first shaft 15 inside the power shell 3, and making full use of the mechanical energy of the piston rod 12 during the reciprocating process, reducing the waste of mechanical energy.

[0041] In another embodiment, the mechanical energy generated by the piston rod 12 can not only be used to dissipate heat for the rocker arm 14 and the first shaft 15, but also reduce the resistance during the reciprocating movement of the piston rod 12. This is because if the power shell 3 is a sealed chamber, as the piston rod 12 reciprocates, the process of compressing the power shell 3 will generate high-pressure resistance, and the process of releasing the power shell 3 will generate negative pressure resistance, which will relatively increase the loss of mechanical energy. In the present invention, a power shell 3 that is not completely sealed is used to fully reduce the resistance during the reciprocating movement of the piston rod 12.

[0042] It should be noted that it is common sense that the temperature of air will be reduced when it enters from the large aperture of the suction hole 10 and is discharged from the small aperture. Specifically, according to Bernoulli's principle and the principle of conservation of energy, when air is discharged from the large aperture to the small aperture, the flow rate increases, resulting in a decrease in air pressure, expansion of air volume, increase in the distance between molecules, and work done by the intermolecular attraction, thereby reducing the kinetic energy of the molecules, which is reflected as a decrease in the gas temperature.

[0043] As an alternative, a suitable number of suction holes 10 and exhaust holes 11 may be provided to increase the heat dissipation effect, which may be selected according to actual needs and will not be elaborated herein.

[0044] It should also be noted that a shaft seal 20 is provided inside the second docking pipe 5 , and the shaft seal 20 is rotatably sleeved on the outside of the piston rod 12 . The shaft seal 20 is mainly used for reinforcement, and will not be described in detail here.

[0045] It is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ammonium perchlorate crystal quality monitoring and metering system, comprising: A reactor (100), a collecting tank (200), a cooling device (300), a byproduct collecting box (400), an oscillating box (500) and a metering pump device (600), characterized in that sodium perchlorate and ammonium chloride are added to the reactor (100), and the sodium perchlorate and ammonium chloride undergo a double decomposition reaction to form a filtrate and a filter residue; The collecting tank (200) is located below the reactor (100) and is for the filter residue to enter; The cooling device (300) is located at one side below the reactor (100) and is used for the filtrate to enter. The filtrate enters the cooling device (300) to cool down and gradually precipitate a byproduct, which includes sodium chloride and a small amount of ammonium perchlorate. The byproduct collection box (400) is located on one side of the cooling device (300), and the oscillation box (500) is located inside the byproduct collection box (400). The byproduct is transported into the oscillation box (500) to be oscillated and layered to form a sodium chloride layer and an ammonium perchlorate layer, and the ammonium perchlorate is located on the upper layer of the sodium chloride, so that the sodium chloride and the ammonium perchlorate are separated; The metering pump devices (600) are provided in two groups, wherein one group of metering pump devices (600) is installed at the bottom of the reactor (100) and is used to meter the amount of ammonium perchlorate discharged into the collection tank (200); and the other group of metering pump devices (600) is installed on the outer surface of the byproduct collection box (400) and is used to meter the amount of ammonium perchlorate in the ammonium perchlorate layer.

2. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 1, characterized in that: The metering pump device (600) comprises a motor (1), a mounting seat (2), a power shell (3), a first docking pipe (4), a second docking pipe (5) and an external pipe (6); a mounting seat (2) is provided at one end of the motor (1); the power shell (3) is fixedly mounted on the mounting seat (2); a first docking pipe (4) is integrally provided on one side of the power shell (3); the second docking pipe (5) is provided at an end of the first docking pipe (4) away from the power shell (3); one external pipe (6) is provided on both upper and lower sides of the second docking pipe (5); a first internal thread (7) is provided at one end of the two external pipes (6) away from the second docking pipe (5); the first internal thread (7) is docked with an external pipe; when ammonium perchlorate is discharged, the ammonium perchlorate passes through the external pipe (6).

3. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 2, characterized in that: A rocker arm (14) is provided in the power housing (3), one end of the rocker arm (14) is provided with a first hole (16), the other end of the rocker arm (14) is provided with a second hole (18), the end of the rocker arm (14) having the second hole (18) is movably extended into the first docking pipe (4), the rotating shaft on the motor (1) is movably penetrated into the interior of the power housing (3), and a first shaft (15) is fixedly provided at an eccentric position at the end of the rotating shaft on the motor (1), a ball bearing (17) is sleeved on the outer ring of the first shaft (15), and the ball bearing (17) is installed on the first A piston rod (12) is telescopically arranged in the middle of a second docking pipe (5) inside a hole (16), a second shaft (19) is fixedly arranged at one end of the piston rod (12), and the second shaft (19) is rotatably arranged inside the second hole (18), a rubber pad (13) is fixedly arranged at the other end of the piston rod (12), and the rubber pad (13) is slidably arranged inside the second docking pipe (5), and a pumping metering chamber (24) is formed between the end of the rubber pad (13) away from the piston rod (12) and the inner wall of the second docking pipe (5).

4. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 3, characterized in that: The upper and lower ends of the second docking pipe (5) are both provided with second internal threads (23) for connecting the end of the external pipe (6), and the external pipe (6) is connected to the pumping metering chamber (24) inside the second docking pipe (5).

5. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 4, characterized in that: A clamping member (29) is provided inside one end of the upper and lower external pipes (6) close to the second docking pipe (5). The clamping member (29) comprises a first clamping ring (30), an intermediate base ring (31) and a second clamping ring (32). The first clamping ring (30) and the second clamping ring (32) are respectively attached to the two ends of the intermediate base ring (31). The clamping member (29) is clamped inside the external pipe (6). The inner diameters of the first clamping ring (30) and the second clamping ring (32) are both smaller than the inner diameter of the intermediate base ring (31). A blocking ball (28) is provided in the intermediate base ring (31). The diameter of the blocking ball (28) is larger than the inner diameters of the first clamping ring (30) and the second clamping ring (32).

6. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 5, characterized in that: A rotating rod (26) is rotatably provided on the inner wall of the pumping metering chamber (24), and a movable baffle (27) is fixedly provided on the rotating rod (26). The movable baffle (27) movably blocks the upper surface of the connecting port (25) below the pumping metering chamber (24), and one end of the rotating rod (26) on the movable baffle (27) is in contact with the inner wall of the pumping metering chamber (24) away from the piston rod (12).

7. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 6, characterized in that: The blocking ball (28) comprises a core body (34) and an outer protective shell (33); the core body (34) is a cylindrical structure, and the outside of the core body (34) is provided with an external thread; the outer protective shell (33) comprises two mutually symmetrical hemispherical shell structures, the inside of the hemispherical shell structure is a circular groove, the inner wall of the circular groove is provided with an internal thread structure, and the hemispherical shell structure is rotatably mounted on the outside of the core body (34).

8. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 7, characterized in that: The first butt-joint pipe (4) and the second butt-joint pipe (5) are both integrally provided with flanges (8) at their ends close to each other, a heat-insulating bridge ring (9) is provided between the two flanges (8), and the heat-insulating bridge ring (9) and the two flanges (8) are fixed by screws.

9. A kind of ammonium perchlorate crystal quality monitoring and metering system according to claim 2, characterized in that: The power shell (3) is provided with a discharge hole (11) and a suction hole (10) on the top and side thereof, respectively; a first one-way valve (21) is provided in the discharge hole (11); the first one-way valve (21) can allow air inside the power shell (3) to be discharged to the outside of the power shell (3) in one direction; a second one-way valve (22) is provided in the suction hole (10); the second one-way valve (22) can allow external air to enter the power shell (3) in one direction; the suction hole (10) is conical in shape; and a small end of the suction hole (10) is in communication with the inside of the power shell (3).

10. A monitoring method for an ammonium perchlorate crystal quality monitoring and metering system, characterized in that: Applicable to the ammonium perchlorate crystal quality monitoring and metering system described in any one of claims 1 to 9.

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