CN214513376U - Water vapor collecting device of reaction kettle - Google Patents
Water vapor collecting device of reaction kettle Download PDFInfo
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- CN214513376U CN214513376U CN202120625070.1U CN202120625070U CN214513376U CN 214513376 U CN214513376 U CN 214513376U CN 202120625070 U CN202120625070 U CN 202120625070U CN 214513376 U CN214513376 U CN 214513376U
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Abstract
The utility model discloses a reation kettle's vapor collection device, its technical scheme is: the improved reaction kettle comprises a box body, wherein a fan is arranged on one side of the box body, a reaction kettle body is arranged on one side of the fan, an auxiliary mechanism is arranged inside the box body, the auxiliary mechanism extends out of the box body, the auxiliary mechanism comprises a motor, the motor is fixedly arranged at the top of the box body, the motor is fixedly connected with a first reciprocating screw rod through an output shaft, and the first reciprocating screw rod sequentially extends into the top side wall and the bottom side wall of an inner cavity of the box body. The utility model has the advantages that: through the design of auxiliary structure, can make fan work circulate the inside gas of reation kettle, make inside the air admission box, the inside air of entering box can make the air circulate in the box and carry out the separation of steam to it during the motor is opened to solve equipment in the past and be difficult to the high efficiency and retrieve and cause the problem of injury to the environment to vapor.
Description
Technical Field
The utility model relates to a reation kettle technical field, concretely relates to reation kettle's vapor collection device.
Background
The broad understanding of the reaction vessel is that there is a vessel for physical or chemical reaction, and the heating, evaporation, cooling and low-speed mixing functions required by the process are realized by the structural design and parameter configuration of the vessel, the reaction vessel is widely applied to petroleum, chemical engineering, rubber, pesticides, dyes, medicines, foods, pressure vessels for completing the processes of vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation, etc., such as reactors, reaction pots, decomposing pots, polymerization vessels, etc., and the materials generally include carbon manganese steel, stainless steel, zirconium, nickel base, alloys and other composite materials.
The prior art has the following defects: the existing reaction kettle usually has a plurality of chemical substances to react, and the steam generated in the heating process necessarily contains a plurality of chemical substances, and the steam generated in the reaction kettle for production and purification directly discharged into the air through a steam conduit causes pollution to the air and great harm to human bodies.
Therefore, the invention is necessary to develop a water vapor collecting device of a reaction kettle.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a reation kettle's vapor collection device, through auxiliary structure's design, can make fan work circulate reation kettle inside gas, make inside the air admission box, get into the inside air of box and can make the air circulate in the box and carry out the separation of steam to it during the motor is opened to solve equipment in the past and be difficult to the high efficiency to vapor recovery and cause the problem of injury to the environment.
In order to achieve the above object, the present invention provides the following technical solutions: a water vapor collecting device of a reaction kettle comprises a box body, wherein a fan is arranged on one side of the box body, a reaction kettle body is arranged on one side of the fan, an auxiliary mechanism is arranged inside the box body, and the auxiliary mechanism extends out of the box body;
the auxiliary mechanism comprises a motor, the motor is fixedly arranged at the top of the box body, the motor is fixedly connected with a first reciprocating screw rod through an output shaft, the first reciprocating screw rod sequentially extends into the top side wall and the bottom side wall of the inner cavity of the box body, the first reciprocating screw rod is connected with the box body through a bearing, a first bearing seat is arranged outside the first reciprocating screw rod, the first bearing seat is connected with the first reciprocating screw rod through a ball nut pair, a first belt pulley is fixedly arranged outside the first reciprocating screw rod, a first square telescopic rod is arranged inside the top side wall of the inner cavity of the box body, the first square telescopic rod is connected with the box body through a bearing, a second belt pulley is fixedly arranged outside the first square telescopic rod, a first belt is arranged between the first belt pulley and the second belt pulley, and the first belt pulley is connected with the second belt pulley through a first belt;
the auxiliary mechanism further comprises an auxiliary assembly and an auxiliary unit, the auxiliary assembly is arranged inside the box body, and the auxiliary unit is arranged outside the box body.
Preferably, the auxiliary assembly comprises a first bevel gear, the first bevel gear is fixedly arranged at the bottom of a first square telescopic rod, a rotating rod is arranged at the bottom of the first bevel gear, a second bevel gear is fixedly arranged outside the rotating rod and is arranged at the bottom of the first bevel gear and meshed with the first bevel gear, a second square telescopic rod is arranged at the bottom of the second bevel gear, the second square telescopic rod extends into the bottom of an inner cavity of the box and is connected with the box through a bearing, a third bevel gear is fixedly arranged at the top of the second square telescopic rod, the third bevel gear is arranged at the bottom of the second bevel gear and meshed with the second bevel gear, and a plurality of fan blades are fixedly arranged outside the rotating rod.
Preferably, first reciprocal lead screw external fixation is equipped with the third belt pulley, the inside reciprocal lead screw of second that is equipped with of box, the reciprocal lead screw of second extends into box inner chamber bottom and passes through the bearing with the box and be connected, the reciprocal lead screw external fixation of second is equipped with the fourth belt pulley, the third belt pulley passes through the second belt with the fourth belt pulley and is connected, the reciprocal lead screw outside of second is equipped with the second bearing seat, the reciprocal lead screw of second passes through ball nut pair with the second bearing seat and is connected, the fixed riser that is equipped with in second bearing seat one side, the dwang extends into the riser inside and passes through the bearing with the riser and is connected.
Preferably, a Z-shaped rod is fixedly arranged on one side of the first bearing seat, a sliding groove is formed in one side of the inner cavity of the box body, the Z-shaped rod extends into the sliding groove, a baffle is fixedly arranged at the bottom of the first bearing seat, a hollow groove is formed in the baffle, a support plate is fixedly arranged at the top of the inner cavity of the box body, the first belt and the second belt penetrate through the support plate, a filter screen is fixedly arranged at the bottom of the support plate, and the bottom of the filter screen is fixedly connected with the bottom of the inner cavity of the box body.
Preferably, the fixed linking frame that is equipped with in riser one side, first square telescopic link all extends into inside the linking frame and pass through the bearing with the linking frame with the square telescopic link of second and be connected, the dwang runs through the linking frame and passes through the bearing with the linking frame and be connected, the fixed bearer bar that is equipped with in box top, the motor is fixed to be located inside the bearer bar, the fixed backup pad that is equipped with respectively in bottom half both sides, the bottom half is equipped with the collection frame.
Preferably, a first air outlet is formed in one side of the box body, an air outlet pipe is fixedly arranged on one side of the fan, the air outlet pipe is arranged on one side of the first air outlet, an air suction pipe is fixedly arranged on the other side of the fan, a second air outlet is formed in one side of the reaction kettle body, the air suction pipe is arranged on one side of the second air outlet, and fixing plates are fixedly arranged on two sides of the bottom of the reaction kettle body.
Preferably, the auxiliary unit comprises two L-shaped plates, the two L-shaped plates are respectively and fixedly arranged on one side of the reaction kettle body and one side of the box body, and the fan is fixedly arranged on the tops of the two L-shaped plates.
Preferably, the auxiliary unit comprises two U-shaped plates, the two U-shaped plates are respectively and fixedly arranged on one side of the reaction kettle body and one side of the box body, and the fan is fixedly arranged on the tops of the two U-shaped plates.
The utility model has the advantages that:
1. the utility model discloses an auxiliary structure's design can make fan work circulate the inside gas of reation kettle, makes inside the air admission box, and the inside air of entering box can make the air circulate in the box and carry out the separation of steam to it during the motor is opened, has solved the effect that equipment was difficult to high efficiency to vapor recovery in the past, has also reduced the manpower simultaneously, has improved work efficiency.
2. The utility model discloses a simple structural design can discharge after purifying gas through the active carbon, on the one hand, has solved the problem of polluting operational environment, and on the other hand also makes gaseous emission to external injury minimize through active carbon adsorption chemical, has protected mankind's living environment indirectly and has protected human safety.
Drawings
Fig. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a perspective view of the overall structure of the case body provided by the present invention;
fig. 3 is an enlarged view of a point a in fig. 1 according to the present invention;
fig. 4 is a schematic view of the overall structure of embodiment 2 provided by the present invention;
in the figure: the reaction kettle comprises a box body 1, a fan 2, a reaction kettle body 3, a motor 4, a first reciprocating screw rod 5, a first bearing seat 6, a first belt pulley 7, a first square telescopic rod 8, a second belt pulley 9, a first belt 10, a first bevel gear 11, a rotating rod 12, a second bevel gear 13, a square telescopic rod 14, a third bevel gear 15, a third belt pulley 16, a second reciprocating screw rod 17, a fourth belt pulley 18, a second belt 19, a second bearing seat 20, a baffle 21, a connecting frame 22, a protective frame 23, a supporting plate 24, a first air outlet 25, a fixing plate 26, a 27L-shaped plate and a 28U-shaped plate.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Embodiment 1, refer to fig. 1-3, the utility model provides a pair of reation kettle's vapor collection device, including box 1, 1 one side of box is equipped with fan 2, and 2 one sides of fan are equipped with reation kettle body 3, and 1 inside complementary unit that is equipped with of box is outside complementary unit extends box 1.
The auxiliary mechanism comprises a motor 4, the motor 4 is fixedly arranged at the top of the box body 1, the motor 4 is fixedly connected with a first reciprocating screw rod 5 through an output shaft, the first reciprocating screw rod 5 sequentially extends into the top side wall and the bottom side wall of the inner cavity of the box body 1, the first reciprocating screw rod 5 is connected with the box body 1 through a bearing, a first bearing seat 6 is arranged outside the first reciprocating screw rod 5, the first bearing seat 6 is connected with the first reciprocating screw rod 5 through a ball nut pair, a first belt pulley 7 is fixedly arranged outside the first reciprocating screw rod 5, a first square telescopic rod 8 is arranged inside the top side wall of the inner cavity of the box body 1, the first square telescopic rod 8 is connected with the box body 1 through a bearing, a second belt pulley 9 is fixedly arranged outside the first square telescopic rod 8, a first belt 10 is arranged between the first belt pulley 7 and the second belt pulley 9, and the first belt pulley 7 is connected with the second belt pulley 9 through the first belt 10.
The auxiliary mechanism further comprises an auxiliary assembly and an auxiliary unit, the auxiliary assembly is arranged inside the box body 1, and the auxiliary unit is arranged outside the box body 1.
Further, the auxiliary assembly includes first bevel gear 11, first bevel gear 11 is fixed to be located 8 bottoms of first square telescopic link, 11 bottoms of first bevel gear are equipped with dwang 12, dwang 12 external fixation is equipped with second bevel gear 13, second bevel gear 13 is located 11 bottoms of first bevel gear and is engaged with first bevel gear 11, second bevel gear 13 bottom is equipped with the square telescopic link of second 14, the square telescopic link of second 14 extends into 1 inner chamber bottom of box and passes through the bearing with box 1 and be connected, the fixed third bevel gear 15 that is equipped with in the square telescopic link of second 14 tops, third bevel gear 15 is located 13 bottoms of second bevel gear and is engaged with second bevel gear 13, dwang 12 external fixation is equipped with a plurality of flabellums, conveniently drive the flabellum and rotate, the flabellum rotates conveniently with gaseous discharge.
Further, a third belt pulley 16 is fixedly arranged outside the first reciprocating screw rod 5, a second reciprocating screw rod 17 is arranged inside the box body 1, the second reciprocating screw rod 17 extends into the bottom of an inner cavity of the box body 1 and is connected with the box body 1 through a bearing, a fourth belt pulley 18 is fixedly arranged outside the second reciprocating screw rod 17, a second belt 19 is arranged between the third belt pulley 16 and the fourth belt pulley 18, the third belt pulley 16 is connected with the fourth belt pulley 18 through the second belt 19, a second bearing seat 20 is arranged outside the second reciprocating screw rod 17, the second reciprocating screw rod 17 is connected with the second bearing seat 20 through a ball nut pair, a vertical plate is fixedly arranged on one side of the second bearing seat 20, the rotating rod 12 extends into the vertical plate and is connected with the vertical plate through the bearing, the second bearing seat 20 is conveniently driven to move, and the second bearing seat 20 is conveniently limited.
Further, 6 one side of primary shaft bearing is fixed and is equipped with the Z shape pole, the spout has been seted up to 1 inner chamber one side of box, the Z shape pole extends into inside the spout, 6 fixed baffles 21 that are equipped with in bottom of primary shaft bearing, the dead slot has been seted up to 21 inside baffles, the fixed extension board that is equipped with in 1 inner chamber top of box, first belt 10 all runs through the extension board with second belt 19, the fixed filter screen that is equipped with in extension board bottom, filter screen bottom and 1 inner chamber bottom fixed connection of box, 1 inside fixed activated carbon that is equipped with of box, logical groove has been seted up to 1 one side of box, the spread groove has been seted up to 1 inner chamber bottom of box, conveniently carry on spacingly to primary shaft bearing 6, make things convenient for the filter screen to gas filtration, make things convenient for the activated carbon to adsorb chemical substance.
Further, the fixed linking frame 22 that is equipped with in riser one side, first square telescopic link 8 all extends into inside the linking frame 22 and is connected through the bearing with the linking frame 22 with the square telescopic link 14 of second, dwang 12 runs through the linking frame 22 and passes through the bearing with the linking frame 22 and be connected, the fixed protective frame 23 that is equipped with in 1 top of box, motor 4 is fixed to be located inside the protective frame 23, 1 bottom both sides of box are the fixed backup pad 24 that is equipped with respectively, 1 bottom of box is equipped with the material collection frame, conveniently drive dwang 12 and remove, conveniently protect motor 4, conveniently support box 1.
Further, first air outlet 25 has been seted up to 1 one side of box, and 2 one sides of fan are fixed and are equipped with out the tuber pipe, go out the tuber pipe and locate first air outlet 25 one side, and 2 opposite sides of fan are fixed and are equipped with the aspiration channel, and the second air outlet has been seted up to 3 one sides of reation kettle body, and second air outlet one side is located to the aspiration channel, and 3 bottom both sides of reation kettle body are all fixed and are equipped with fixed plate 26, conveniently transmit the inside gas of reation kettle body 3.
Further, the auxiliary unit includes two L shaped plates 27, and two L shaped plates 27 are fixed respectively and are located reation kettle body 3 one side and box 1 one side, and fan 2 is fixed and is located two L shaped plate 27 tops, conveniently supports fan 2.
The utility model discloses a use as follows: use the utility model discloses the time, at first the utility model discloses connect external power source, when the gas in the reation kettle body 3 is discharged and vapor is collected to needs, at first open fan 2, inside the gas transmission to box 1 that fan 2 work made 3 inside of reation kettle bodies. At the moment, the motor 4 is turned on, the motor 4 rotates to drive the first reciprocating screw rod 5 to rotate, the first reciprocating screw rod 5 rotates to drive the first bearing seat 6 to move, the first bearing seat 6 moves to drive the baffle 21 to move, the baffle 21 moves to clean water drops on the filter screen, and the water drops after being swept fall into the collecting frame, so that the water vapor is collected. The first belt pulley 7 rotates to drive the first belt 10 to rotate, the first belt 10 rotates to drive the second belt pulley 9 to rotate, the second belt pulley 9 rotates to drive the first square telescopic rod 8 to rotate, the first square telescopic rod 8 rotates to drive the first bevel gear 11 to rotate, the first bevel gear 11 rotates to drive the second bevel gear 13 to rotate, the second bevel gear 13 rotates to drive the rotating rod 12 to rotate, the rotating rod 12 rotates to drive the fan blades to rotate, the second bevel gear 13 rotates to drive the third bevel gear 15 to rotate, the third bevel gear 15 rotates to drive the second square telescopic rod 14 to rotate, meanwhile, the third belt pulley 16 rotates to drive the second belt 19 to rotate, the second belt 19 rotates to drive the fourth belt pulley 18 to rotate, the fourth belt pulley 18 rotates to drive the second reciprocating screw rod 17 to rotate, the second reciprocating screw rod 17 rotates to drive the second bearing 20 to move, the second bearing 20 moves to drive the vertical plate to move, the riser removes and drives the connection frame 22 and removes, and the connection frame 22 removes and drives dwang 12 and flabellum simultaneous movement to reach the gaseous exhaust effect in box 1, simultaneously, the active carbon adsorbs gaseous chemical substance, thereby guarantees the protection to the environment.
Embodiment 2, refer to fig. 4, the utility model provides a pair of reation kettle's vapor collection device, auxiliary unit include two U-shaped plates 28, and two U-shaped plates 28 are fixed respectively and are located reation kettle body 3 one side and box 1 one side, and fan 2 is fixed and is located two U-shaped plate 28 tops.
The utility model discloses a use as follows: when the utility model is used, when the gas in the reaction kettle body 3 needs to be discharged and the vapor is collected, firstly, the fan 2 is opened, the fan 2 works to transmit the gas in the reaction kettle body 3 to the interior of the box body 1, at the moment, the motor 4 is opened, the motor 4 rotates to drive the first reciprocating screw rod 5 to rotate, the first reciprocating screw rod 5 rotates to drive the first bearing seat 6 to move, the first bearing seat 6 moves to drive the baffle 21 to move, the baffle 21 moves to clean the water drops on the filter screen, the water drops after being cleaned fall into the collecting frame, thereby the collection of the vapor is achieved, the first belt pulley 7 rotates to drive the first belt 10 to rotate, the first belt pulley 10 rotates to drive the second belt pulley 9 to rotate, the second belt pulley 9 rotates to drive the first square telescopic rod 8 to rotate, the first square telescopic rod 8 rotates to drive the first bevel gear 11 to rotate, the first bevel gear 11 rotates to drive the second bevel gear 13 to rotate, the two U-shaped frames support the fan 2, so that the normal operation of the equipment is ensured.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (8)
1. The utility model provides a reation kettle's vapor collection device, includes box (1), its characterized in that: a fan (2) is arranged on one side of the box body (1), a reaction kettle body (3) is arranged on one side of the fan (2), an auxiliary mechanism is arranged in the box body (1), and the auxiliary mechanism extends out of the box body (1);
the auxiliary mechanism comprises a motor (4), the motor (4) is fixedly arranged at the top of the box body (1), the motor (4) is fixedly connected with a first reciprocating screw rod (5) through an output shaft, the first reciprocating screw rod (5) sequentially extends into the top side wall and the bottom side wall of the inner cavity of the box body (1), the first reciprocating screw rod (5) is connected with the box body (1) through a bearing, a first bearing seat (6) is arranged outside the first reciprocating screw rod (5), the first bearing seat (6) is connected with the first reciprocating screw rod (5) through a ball nut pair, a first belt pulley (7) is fixedly arranged outside the first reciprocating screw rod (5), a first square telescopic rod (8) is arranged inside the top side wall of the inner cavity of the box body (1), the first square telescopic rod (8) is connected with the box body (1) through a bearing, a second belt pulley (9) is fixedly arranged outside the first square telescopic rod (8), a first belt (10) is arranged between the first belt pulley (7) and the second belt pulley (9), and the first belt pulley (7) is connected with the second belt pulley (9) through the first belt (10);
the auxiliary mechanism further comprises an auxiliary assembly and an auxiliary unit, the auxiliary assembly is arranged inside the box body (1), and the auxiliary unit is arranged outside the box body (1).
2. The water vapor collecting device of the reaction kettle according to claim 1, wherein: the auxiliary component comprises a first bevel gear (11), the first bevel gear (11) is fixedly arranged at the bottom of the first square telescopic rod (8), a rotating rod (12) is arranged at the bottom of the first bevel gear (11), a second bevel gear (13) is fixedly arranged outside the rotating rod (12), the second bevel gear (13) is arranged at the bottom of the first bevel gear (11) and is meshed with the first bevel gear (11), the bottom of the second bevel gear (13) is provided with a second square telescopic rod (14), the second square telescopic rod (14) extends into the bottom of the inner cavity of the box body (1) and is connected with the box body (1) through a bearing, a third bevel gear (15) is fixedly arranged at the top of the second square telescopic rod (14), the third bevel gear (15) is arranged at the bottom of the second bevel gear (13) and meshed with the second bevel gear (13), and a plurality of fan blades are fixedly arranged outside the rotating rod (12).
3. The water vapor collecting device of the reaction kettle according to claim 2, wherein: first reciprocal lead screw (5) external fixation is equipped with third belt pulley (16), box (1) inside is equipped with the reciprocal lead screw of second (17), the reciprocal lead screw of second (17) extend into box (1) inner chamber bottom and pass through the bearing with box (1) and be connected, the reciprocal lead screw of second (17) external fixation is equipped with fourth belt pulley (18), third belt pulley (16) are connected through second belt (19) with fourth belt pulley (18), the reciprocal lead screw of second (17) outside is equipped with second bearing (20), the reciprocal lead screw of second (17) passes through ball nut pair with second bearing (20) and is connected, second bearing (20) one side is fixed and is equipped with the riser, dwang (12) extend into the riser inside and pass through the bearing with the riser and be connected.
4. A water vapor collecting device for a reaction vessel according to claim 3, wherein: the fixed Z shape pole that is equipped with in primary shaft bearing (6) one side, the spout has been seted up to box (1) inner chamber one side, inside the Z shape pole extended into the spout, the fixed baffle (21) that is equipped with in primary shaft bearing (6) bottom, the dead slot has been seted up to baffle (21) inside, the fixed extension board that is equipped with in box (1) inner chamber top, first belt (10) all run through the extension board with second belt (19), the fixed filter screen that is equipped with in extension board bottom, filter screen bottom and box (1) inner chamber bottom fixed connection.
5. The water vapor collecting device of the reaction kettle according to claim 4, wherein: riser one side is fixed and is equipped with linking frame (22), first square telescopic link (8) all extend into linking frame (22) inside with square telescopic link (14) of second and pass through the bearing with linking frame (22) and be connected, dwang (12) run through linking frame (22) and pass through the bearing with linking frame (22) and be connected, box (1) top is fixed and is equipped with protecting frame (23), motor (4) are fixed and are located protecting frame (23) inside, box (1) bottom both sides are fixed backup pad (24) that are equipped with respectively, box (1) bottom is equipped with the collection frame.
6. The water vapor collecting device of the reaction kettle according to claim 1, wherein: first air outlet (25) have been seted up to box (1) one side, fan (2) one side is fixed to be equipped with out the tuber pipe, it locates first air outlet (25) one side to go out the tuber pipe, fan (2) opposite side is fixed to be equipped with the aspiration channel, the second air outlet has been seted up to reation kettle body (3) one side, second air outlet one side is located to the aspiration channel, reation kettle body (3) bottom both sides are all fixed and are equipped with fixed plate (26).
7. The water vapor collecting device of the reaction kettle according to claim 1, wherein: the auxiliary unit comprises two L-shaped plates (27), the two L-shaped plates (27) are respectively and fixedly arranged on one side of the reaction kettle body (3) and one side of the box body (1), and the fan (2) is fixedly arranged on the tops of the two L-shaped plates (27).
8. The water vapor collecting device of the reaction kettle according to claim 1, wherein: the auxiliary unit comprises two U-shaped plates (28), the two U-shaped plates (28) are respectively and fixedly arranged on one side of the reaction kettle body (3) and one side of the box body (1), and the fan (2) is fixedly arranged at the tops of the two U-shaped plates (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120625070.1U CN214513376U (en) | 2021-03-29 | 2021-03-29 | Water vapor collecting device of reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120625070.1U CN214513376U (en) | 2021-03-29 | 2021-03-29 | Water vapor collecting device of reaction kettle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214513376U true CN214513376U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120625070.1U Active CN214513376U (en) | 2021-03-29 | 2021-03-29 | Water vapor collecting device of reaction kettle |
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| Country | Link |
|---|---|
| CN (1) | CN214513376U (en) |
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2021
- 2021-03-29 CN CN202120625070.1U patent/CN214513376U/en active Active
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