Spray gun position adjusting device of fluidized bed granulator

Abstract

A spray gun position adjusting device of a fluid bed granulator comprises a shaft connecting piece provided with a main shaft, a driving connecting piece located at one end of the shaft connecting piece and provided with a driving motor, and a distance adjusting connecting piece located at the other end of the shaft connecting piece and provided with a lifting rod. The middle and the lower end of the lifting rod are both provided with nozzles and achieve upward or downward linear motion under the action of the distance adjusting connecting piece, the distance adjusting connecting piece comprises a shell and a friction unit, one end of the shell is inserted into the shaft connecting piece, the friction unit is arranged in the shell and connected with the main shaft, and the lifting rod penetrates through the shell and is connected with the main shaft. The part, located in the shell, of the lifting rod is allowed to be covered by the friction unit so that the lifting rod can linearly move when the friction unit rotates along with rotation of the main shaft, and an ultrasonic distance measuring sensor is arranged on the spray head located at the lower end of the lifting rod.

Description

Technical Field

[0001] The invention relates to the technical field of pharmaceutical processing, in particular to a spray gun position regulating device for a boiling granulator. Background Art

[0002] The boiling dryer is a drying equipment that heats the air through a heat exchanger to form hot air. The clean hot air is distributed through a valve plate into the boiling dryer body. The wet material entering the dryer body from the feeder is boiled by the hot air. Since the hot air is in extensive contact with the material, the heat and mass transfer process is increased, so the material can be dried in a shorter time. The boiling dryer can be used for drying pharmaceuticals, chemical raw materials, food, grain processing, and feed.

[0003] Publication (Announcement) No.: CN220879353U discloses an automatic distance measurement spray gun adjustment device, including a main shaft and a first drive mechanism, the first drive mechanism drives the main shaft to rotate, a central shaft is provided for rotation in the main shaft, the central shaft is connected to a second drive mechanism and a distance adjustment mechanism, the distance adjustment mechanism is provided with a distance sensor and multiple spray guns, the second drive mechanism drives the central shaft to rotate and drives the distance adjustment mechanism to operate, thereby adjusting the height of the spray gun from the bottom of the drum. This device can automatically adjust according to the data fed back by the distance sensor, thereby eliminating the need for shutdown and the waste of materials caused by shutdown. However, there are defects, mainly reflected in the distance adjustment mechanism. The distance adjustment mechanism has a relatively complex structure, and when making position adjustments, it is necessary to rely on adjusting the angle to improve the use height of the spray gun, which is too cumbersome. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned shortcomings of the prior art and provides a spray gun position adjustment device for a boiling granulator to solve the above-mentioned problems.

[0005] The present invention solves its technical problems by adopting a technical solution: the spray gun position adjustment device of this boiling granulator includes a shaft connecting member provided with a main shaft, a drive connecting member located at one end of the shaft connecting member and provided with a drive motor, and a distance adjustment connecting member located at the other end of the shaft connecting member and provided with a lifting rod. The middle and lower ends of the lifting rod are provided with nozzles and realize upward or downward linear motion under the action of the distance adjustment connecting member. The distance adjustment connecting member includes a shell and a friction unit. One end of the shell is inserted into the shaft connecting member. The friction unit is arranged in the shell and connected to the main shaft. The lifting rod passes through the shell, and part of the lifting rod located in the shell is allowed to be covered by the friction unit, so that the lifting rod can move linearly when the friction unit rotates following the rotation of the main shaft. An ultrasonic ranging sensor is provided on the nozzle located at the lower end of the lifting rod.

[0006] Further improvement, the friction unit includes an active friction wheel with a spacing, and a passive friction wheel. The active friction wheel is connected to the main shaft, and the passive friction wheel is rotatably connected to an elastic structure that can retract when squeezed and is simultaneously connected to the outer shell. The lifting rod is placed in the spacing generated between the active friction wheel and the passive friction wheel and is in contact with both of them at the same time.

[0007] Further improvement, the active friction wheel and the passive friction wheel have the same configuration, and both are provided with a clamping groove arranged in a circle along their circumference on their outer surfaces.

[0008] To be further improved, the elastic structure includes a shaft frame, a fixed shaft, a disc spring, and a plug. The shaft frame is placed in the outer shell and one end is plugged into the socket formed on the outer shell. The fixed shaft is set on the shaft frame, and the passive friction wheel is rotatably connected to the fixed shaft. The disc spring is set at the end of the shaft frame where the socket is located. The plug is set in the socket and abuts against the disc spring.

[0009] For further improvement, one end of the shaft bracket inserted into the plug hole is provided with an accommodating cavity for the disc spring to be placed therein, and part of the plug extends into the accommodating cavity.

[0010] For further improvement, a sensor connector is provided outside the ultrasonic ranging sensor so that the ultrasonic ranging sensor is placed inside and connected to the nozzle. An air inlet interface and an air outlet interface are provided on both sides of the outer peripheral surface of the sensor connector. A fitting gap serving as an air passage is formed between the ultrasonic ranging sensor and the inner cavity of the sensor connector. A path that defines the air trajectory of the cooling gas is formed between the air passage and the air inlet interface and the air outlet interface. The air inlet interface and the air outlet interface are staggered in the upper and lower parts.

[0011] Further improvement, the sensor connecting part includes an inner tube and an outer tube sleeve, the inner tube is used to form an air passage and a stop cap with an outer diameter larger than the outer diameter of the inner tube is provided at its upper end, the outer tube sleeve has an upper end opening and a lower end opening, the upper end opening is placed in the inner tube that can be inserted into the outer tube sleeve, and the final assembly position of the outer tube sleeve in the inner tube is confirmed by contact with the stop cap, and the lower end opening is placed in the ultrasonic ranging sensor present in the air passage.

[0012] To further improve, the air inlet interface and the air outlet interface are both arranged on the outer peripheral surface of the outer cylinder sleeve, and the outer cylinder sleeve and the inner cylinder are both provided with air holes that communicate with the air inlet interface and the air outlet interface.

[0013] Further improvement, the lower end opening is formed with a first mounting groove on the bottom plate of the outer cylinder sleeve, and a first sealing ring is arranged in the first mounting groove.

[0014] For further improvement, a second mounting groove is provided on the outer peripheral surface of the inner cylinder, and a second sealing ring is provided in the second mounting groove.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention uses the resistance generated by friction to achieve the rise or fall of the lifting rod. The structure of this method is simpler than the existing technology, so that the lifting rod moves straight up and down when adjusting its position, without the need for angle adjustment;

[0017] 2. The present invention utilizes low-temperature gas to prevent the ultrasonic ranging sensor from being affected by the high-temperature environment, thereby extending its service life. In addition, the position setting of the air inlet and outlet interfaces can extend the air trajectory of the low-temperature gas, taking away more heat, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the full cross-section structure of the present invention;

[0020] Figure 3 A partial cross-sectional structural diagram of another aspect of the present invention;

[0021] Figure 4 Schematic diagram of the full cross-section structure of the sensor connector of the present invention;

[0022] Figure 5 This is a schematic diagram of the full cross-section structure of the outer sleeve of the present invention;

[0023] Figure 6 This is a schematic diagram of the present invention in use in a boiling granulator. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings:

[0025] Referring to the accompanying drawings: This boiling granulator's spray gun position adjustment device includes a shaft connector 1 provided with a main shaft 11, a drive connector 2 located at one end of the shaft connector 1 and provided with a power source, and a distance adjustment connector 3 located at the other end of the shaft connector 1 and provided with a lifting rod 31. The middle and lower ends of the lifting rod 31 are provided with nozzles 4 and realize upward or downward linear motion under the action of the distance adjustment connector 3. The distance adjustment connector 3 includes a shell 32 and a rotatable friction unit 33. One end of the shell 32 is inserted into the shaft connector 1, and the friction unit 33 is arranged in the shell 32 and connected to the main shaft 11. The lifting rod 31 passes through the shell 32 and allows part of the lifting rod 31 located in the shell 32 to be covered by the friction unit 33, so that the lifting rod 31 can move linearly when the friction unit 33 rotates following the rotation of the main shaft 11. An ultrasonic ranging sensor 5 is provided on the nozzle 4 at the lower end of the lifting rod 31. The principle of the present invention is that the driving connector 2 and the adjusting connector 3 are respectively arranged at the two ends of the shaft connector 1, so that the power source (the power source is a pneumatic / DC motor driving a worm gear reducer) arranged in the driving connector 2 can drive the main shaft 11 to rotate along its axis, and also enable the main shaft 11 to transmit power to the friction unit 33, so that the friction unit 33 rotates. The surface roughness value of the friction unit 33 itself is relatively high, and friction resistance can be generated when it contacts the lifting rod 31. Under the action of friction resistance, the two can avoid slipping, thereby rotating the friction unit 33. The downward drive causes the lifting rod 31 to rise or fall to complete the position adjustment of the nozzle 4. The structure of this method is simpler than the existing technology, so that the lifting rod 31 moves straight up and down when adjusting the position, and there is no need to adjust the angle because the nozzle 4 itself is always in the center position. In this way, the spray liquid sprayed by the nozzle 4 has the widest coverage. The ultrasonic ranging sensor 5 is used to sense the distance from the spray gun 4 to the tablet bed, and then the power source is controlled to adjust the lifting rod 31 to the appropriate position, that is, the spray gun 4 is also at a suitable distance, so that the boiling granulator can obtain a better granulation effect.

[0026] The friction unit 33 includes an active friction wheel 33-a with a spacing, and a passive friction wheel 33-b. The active friction wheel 33-a is connected to the main shaft 11, and the passive friction wheel 33-b is rotatably connected to the elastic structure 6 that can retract when squeezed and is simultaneously connected to the shell 32. The lifting rod 31 is placed in the spacing generated between the active friction wheel 33-a and the passive friction wheel 33-b and abuts against both of them at the same time. The active friction wheel 33-a is connected to the main shaft 11 so that it can rotate under the drive of the main shaft 11, which is used to give power to the lifting rod 31 to move. The passive friction wheel 33-b is an auxiliary component. It does not have the ability to actively rotate and can only passively rotate through the movement of the lifting rod 31, which can increase the lifting rod 31. In order to ensure smooth movement, the two wheels are arranged in a manner that enables them to achieve a clamping fit with the lifting rod 31. This fit enables the lifting rod 31 to maintain contact with both the active friction wheel 33-a and the passive friction wheel 33-b. The elastic structure 6 is used to provide a holding force, that is, to ensure that the passive friction wheel 33-b and the lifting rod 31 always maintain contact, and the contact is tight. This ensures that the lifting rod 31 and the active friction wheel 33-a are in close contact, ensuring the friction resistance between the active friction wheel 33-a or the passive friction wheel 33-b and the lifting rod 31. At the same time, the clamping force generated by the clamping fit is strong, that is, the lifting rod 31 can be stably maintained in the desired position in the static state, which limits the free movement of the lifting rod 31.

[0027] The active friction wheel 33-a and the passive friction wheel 33-b have the same configuration. Both of them are provided with a card-embedding groove 7 arranged in a circle along their circumference on their outer surfaces. Such a setting enables the lifting rod 31 to be card-embedded in the card-embedding groove 7. Compared with the single outer peripheral surface contact, there are three contact points between the active friction wheel 33-a or the passive friction wheel 33-b and the lifting rod 31. The friction resistance generated by such contact is also three times that of a single contact, thereby increasing the stability and smoothness of the lifting rod 31 during lifting and lowering, and can also limit the free movement of the lifting rod 31, that is, the lifting rod 31 can be stably maintained in the desired position in a static state.

[0028] The elastic structure 6 includes a shaft frame 61, a fixed shaft 62, a disc spring 63, and a plug 64. The shaft frame 61 is placed in the outer shell 32 and one end is plugged into the plug hole 32-a formed on the outer shell 32. The fixed shaft 62 is set on the shaft frame 61, and the passive friction wheel 33-b is rotatably connected to the fixed shaft 62. The disc spring 63 is set at the end of the shaft frame 61 placed in the plug hole 32-a. The plug 64 is set in the plug hole 32-a and abuts against the disc spring 63. One end of the shaft frame 61 is used to set the fixed shaft 62, and the other end is inserted into the plug hole 32-a. In this way, the position of the shaft frame 61 inside the outer shell 32 can be quickly confirmed, and the rotation of the passive friction wheel 33-b can be realized. The disc spring 63 is elastic, so that it can provide a stable holding force, and it acts between the shaft frame 61 and the plug 64, so that the disc spring 63 can always remain in a compressed state.

[0029] One end of the shaft bracket 61 inserted into the plug hole 32-a is provided with a accommodating chamber 61-a for the disc spring 63 to be placed therein, and a portion of the plug 64 extends into the accommodating chamber 61-a. The built-in arrangement can clearly define the use position of the disc spring 63 in the shaft bracket 61, and a portion of the plug 64 extends into the accommodating chamber 61-a so that the disc spring 63 can always maintain contact with it after compression (length shortened).

[0030] The ultrasonic ranging sensor 5 is provided with a sensor connector 8 that allows the ultrasonic ranging sensor 5 to be placed inside and connected to the nozzle 4. The outer peripheral surface of the sensor connector 8 is provided with an air inlet interface 9 and an air outlet interface 10 distributed on both sides. A matching gap as an air passage 20 is formed between the ultrasonic ranging sensor 5 and the inner cavity of the sensor connector 8. A path that defines the trajectory of the cooling gas is formed between the air passage 20 and the air inlet interface 9 and the air outlet interface 10. The air inlet interface 9 and the air outlet interface 10 are staggered up and down. The ultrasonic ranging sensor 5 is set inside the sensor connector 8. The sensor connector 8 is provided with an air inlet interface 9 and an air outlet interface 10. The air inlet interface 9 is used to be connected to the air inlet pipe, and the air outlet interface 10 is used to be connected to the air outlet pipe, so that the low-temperature gas is guided into the air passage 20 as a cooling medium to cool and protect the ultrasonic ranging sensor 5. The air inlet interface 9 is located at the lower end, and the air outlet interface 10 is located at the upper end, and the two are distributed on the left and right, which can extend the air trajectory of the low-temperature gas in the air passage 20, and also extend the time the low-temperature gas stays in the air passage 20, so that more heat can be taken away, thereby improving the heat dissipation efficiency.

[0031] The sensor connector 8 includes an inner tube 81 and an outer tube sleeve 82. The inner tube 81 is used to form the air passage 20 and is provided with a stop cap 81-a having an outer diameter larger than that of the inner tube 81 at its upper end. The outer tube sleeve 82 has an upper end opening 82-a and a lower end opening 82-b. The upper end opening 82-a is placed in the inner tube 81 that can be plugged into the outer tube sleeve 82, and the outer tube sleeve 82 is confirmed to be in the final assembly position of the inner tube 81 by contacting with the stop cap 81-a. The lower end opening 82-b is placed in the ultrasonic ranging sensor 5 existing in the air passage 20. The inner cylinder 81 is mainly used to form the air passage 20, and the outer cylinder sleeve 82 is used to set the ultrasonic distance sensor 5 and realize plugging and matching with the inner cylinder 81, so that the ultrasonic distance sensor 5 can be placed in the air passage 20, and the stop cap 81-a not only forms a step structure by using the outer diameter difference between itself and the inner cylinder 81, so that the inner cylinder 81 can be abutted against the upper end of the outer cylinder sleeve 82 after being plugged and matched with the outer cylinder sleeve 82, so as to quickly confirm the final assembly position of the outer cylinder sleeve 82 on the inner cylinder 81, but also the stop cap 81-a can be set to interact with the air passage 20. The wiring channel 81-a1 is connected, that is, the wiring channel 81-a1 is used to extend the power wire of the ultrasonic ranging sensor 5 to the outside of the sensor connector 8 and electrically connect to the power element. The outer coat of the power wire is made of rubber material, and the outer diameter of the wire is slightly larger than the inner diameter of the wiring channel 81-a1 so that the two can be tightly matched, which has a certain sealing effect and can prevent moisture from entering through the wiring channel 81-a1. The upper end opening 82-a makes the upper end of the outer sleeve 82 have no top plate, so that when it is plugged in with the inner sleeve 81, the two can achieve surface The lower end opening 82-b is formed on the bottom plate of the outer sleeve 82 (its inner diameter is smaller than the inner diameter of the upper end opening 82-a), which is mainly used to adapt to the outer diameter of the ultrasonic ranging sensor 5, so that the two can be snap-fitted. In this way, when the outer sleeve 82 is disassembled or installed, the ultrasonic ranging sensor 5 can be disassembled or installed together with it, and a stop ring 51 is also provided at the lower end of the ultrasonic ranging sensor 5, that is, the stop ring 51 is used to abut against the bottom plate of the outer sleeve 82, so as to quickly position the ultrasonic ranging sensor 5 in the final assembly position in the inner sleeve 81.

[0032] The air inlet interface 9 and the air outlet interface 10 are both arranged on the outer circumferential surface of the outer cylinder sleeve 82. The outer cylinder sleeve 82 and the inner cylinder 81 are both provided with air holes 30 that communicate with the air inlet interface 9 and the air outlet interface 10, so that the air inlet interface 9 and the air outlet interface 10 are both located outside the outer cylinder sleeve 82, thereby facilitating the connection of the air inlet interface 9 and the air outlet interface 10 with the pipeline. The air holes 30 are used to guide the low-temperature gas entering from the air inlet interface 9 into the air outlet channel 20, or to take away the heat and leave the air outlet channel 20 to enter the air outlet interface 10.

[0033] The lower end opening 82-b is formed with a first mounting groove 82-b1 on the bottom plate of the outer tube sleeve 82, and a first sealing ring 40 is arranged in the first mounting groove 82-b1. That is, the first sealing ring 40 is used to make up for the fitting gap between the lower end opening 82-b and the ultrasonic ranging sensor 5, which has a certain sealing effect and also makes the air passage 20 a sealed chamber to prevent moisture from entering.

[0034] A second mounting groove 81-b is provided on the outer peripheral surface of the inner tube 81, and a second sealing ring 50 is provided in the second mounting groove 81-b. That is, the second sealing ring 50 is used to increase the matching stability of the inner tube 81 and the outer tube sleeve 82 to prevent the two from separating under non-human operation.

[0035] Although the invention has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A spray gun position adjustment device for a boiling granulator, characterized in that: The invention comprises a shaft connecting member (1) provided with a main shaft (11), a driving connecting member (2) located at one end of the shaft connecting member (1) and provided with a power source, and a distance adjusting connecting member (3) located at the other end of the shaft connecting member (1) and provided with a lifting rod (31), wherein a nozzle (4) is provided at the middle part and the lower end of the lifting rod (31) and realizes upward or downward linear motion under the action of the distance adjusting connecting member (3), and the distance adjusting connecting member (3) comprises a shell (32) and a friction unit (33), wherein one end of the shell (32) is inserted into the On the shaft connecting member (1), the friction unit (33) is arranged in the shell (32) and connected to the main shaft (11), the lifting rod (31) passes through the shell (32), and the part of the lifting rod (31) located in the shell (32) is allowed to be covered by the friction unit (33), so that when the friction unit (33) rotates following the rotation of the main shaft (11), the lifting rod (31) can move linearly, and an ultrasonic distance measuring sensor (5) is arranged on the nozzle (4) located at the lower end of the lifting rod (31).

2. The spray gun position adjustment device of the boiling granulator according to claim 1, characterized in that: The friction unit (33) comprises an active friction wheel (33-a) with a spacing, and a passive friction wheel (33-b), wherein the active friction wheel (33-a) is connected to the main shaft (11), and the passive friction wheel (33-b) is rotatably connected to an elastic structure (6) which can retract when squeezed and is simultaneously connected to the housing (32), and the lifting rod (31) is placed in the spacing generated between the active friction wheel (33-a) and the passive friction wheel (33-b) and is simultaneously in contact with both.

3. The spray gun position adjustment device of the boiling granulator according to claim 2, characterized in that: The active friction wheel (33-a) and the passive friction wheel (33-b) have the same configuration, and both are provided with a clamping groove (7) arranged in a circle along their circumference on their outer surfaces.

4. The spray gun position adjustment device of the boiling granulator according to claim 2 is characterized in that: The elastic structure (6) includes an axle frame (61), a fixed shaft (62), a disc spring (63), and a plug (64); the axle frame (61) is placed in the housing (32) and one end is plugged into a plug hole (32-a) formed on the housing (32); the fixed shaft (62) is arranged on the axle frame (61); the passive friction wheel (33-b) is rotatably connected to the fixed shaft (62); the disc spring (63) is arranged at the end of the axle frame (61) placed on the plug hole (32-a); and the plug (64) is arranged in the plug hole (32-a) and abuts against the disc spring (63).

5. The spray gun position adjustment device of the boiling granulator according to claim 4, characterized in that: One end of the shaft frame (61) inserted into the insertion hole (32-a) is provided with a receiving cavity (61-a) for receiving the disc spring (63), and part of the plug (64) extends into the receiving cavity (61-a).

6. The spray gun position adjustment device of the boiling granulator according to claim 1, characterized in that: The ultrasonic distance measuring sensor (5) is provided with a sensor connecting piece (8) outside so that the ultrasonic distance measuring sensor (5) is placed inside and connected to the nozzle (4); an air inlet interface (9) and an air outlet interface (10) are provided on the outer peripheral surface of the sensor connecting piece (8) on both sides; a matching gap serving as an air passage (20) is formed between the ultrasonic distance measuring sensor (5) and the inner cavity of the sensor connecting piece (8); a path defining the air passage trajectory of the cooling gas is formed between the air passage (20) and the air inlet interface (9) and the air outlet interface (10); the air inlet interface (9) and the air outlet interface (10) are distributed in an up-and-down staggered manner.

7. The spray gun position adjustment device of the boiling granulator according to claim 6, characterized in that: The sensor connecting member (8) comprises an inner tube (81) and an outer tube sleeve (82); the inner tube (81) is used to form the air passage (20) and is provided with a stop cap (81-a) having an outer diameter greater than that of the inner tube (81) at its upper end; the outer tube sleeve (82) has an upper end opening (82-a) and a lower end opening (82-b); the upper end opening (82-a) is inserted into the inner tube (81) which can be plugged into the outer tube sleeve (82), and the final assembly position of the outer tube sleeve (82) in the inner tube (81) is confirmed by contact with the stop cap (81-a); the lower end opening (82-b) is inserted into the ultrasonic ranging sensor (5) existing in the air passage (20).

8. The spray gun position adjustment device of the boiling granulator according to claim 7, characterized in that: The air inlet interface (9) and the air outlet interface (10) are both arranged on the outer peripheral surface of the outer cylinder sleeve (82), and the outer cylinder sleeve (82) and the inner cylinder (81) are both provided with air holes (30) which are interconnected with the air inlet interface (9) and the air outlet interface (10).

9. The spray gun position adjustment device of the boiling granulator according to claim 7, characterized in that: The lower end opening (82-b) is formed with a first installation groove (82-b1) on the bottom plate of the outer tube sleeve (82), and a first sealing ring (40) is arranged in the first installation groove (82-b1).

10. The spray gun position adjustment device of the boiling granulator according to claim 7, characterized in that: A second installation groove (81-b) is provided on the outer peripheral surface of the inner cylinder (81), and a second sealing ring (50) is provided in the second installation groove (81-b).

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