CN215400684U - Vacuum device for processing polylactic resin - Google Patents

Abstract

The utility model discloses a vacuum device for processing polylactic resin, which comprises a tank body and a feed hopper, wherein the feed hopper is installed at the upper end of one side of the tank body, a vacuum machine is installed at one end of one side of the top end of the tank body, a filter box is installed at one end of the other side of the top end of the tank body, the top end of one side of the filter box is communicated with the output end of the vacuum machine through a guide pipe, filter structures are arranged on two sides in the filter box, a threaded rod is rotatably connected at the middle position of the top end of the tank body, the bottom end of the threaded rod extends into the tank body, an adjusting plate is installed through a bearing, a concave negative pressure box is installed at the top end of the adjusting plate, and the bottom end of one side of the concave negative pressure box is communicated with one side of the bottom end of the filter box through a corrugated pipe. According to the utility model, by arranging the baffle and the rubber ring, the effect of vacuumizing can be ensured under the condition that the resin is prevented from being pumped out in the vacuumizing process, so that the production and processing efficiency of the polylactic resin is ensured.

Description

Vacuum device for processing polylactic resin

Technical Field

The utility model relates to the technical field of polylactic resin processing equipment, in particular to a vacuum device for processing polylactic resin.

Background

The resin generally refers to an organic polymer which has a softening or melting range after being heated and has a tendency of flowing under the action of external force when being softened, wherein the polylactic acid resin is widely used nowadays due to the excellent performance, and a tank for storing the resin is generally required to be vacuumized in the production process, but the existing vacuum device for processing the polylactic acid resin has many problems or defects:

first, the traditional vacuum apparatus for processing polylactic acid resin does not have protective structure during the use, and in the evacuation process, the resin may be along with being pumped out in the pump body together, causes the body damage in the time, also easily causes the waste of resin.

Second, the conventional vacuum apparatus for processing polylactic acid resin has no adjusting structure when in use, the tank body has a fixed volume, and when the resin is less, the vacuum pumping time is also prolonged.

Third, the traditional vacuum device for processing polylactic acid resin has no filtering structure during use, and in the process of vacuum pumping, gas is not easy to filter, and other impurities or peculiar smell is easy to be discharged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vacuum device for processing polylactic resin, which solves the problems of inconvenient protection, inconvenient adjustment and inconvenient filtration in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a vacuum device for processing polylactic resin comprises a tank body, a feed hopper, a filtering structure for avoiding the discharge of peculiar smell or other impurities, a sealing structure for improving the vacuum pumping efficiency and a protection structure for avoiding the extraction of resin;

the upper end of one side of the tank body is provided with a feed hopper, one end of one side of the top end of the tank body is provided with a vacuum machine, one end of the other side of the top end of the tank body is provided with a filter box, the top end of one side of the filter box is communicated with the output end of the vacuum machine through a guide pipe, and the filter structures are arranged on two sides in the filter box;

a threaded rod is rotatably connected to the middle position of the top end of the tank body, the bottom end of the threaded rod extends into the tank body, an adjusting plate is mounted on the bottom end of the threaded rod through a bearing, and the sealing structure is arranged inside the adjusting plate;

concave type negative pressure tank is installed on the top of regulating plate, and one side intercommunication of bellows and rose box bottom is passed through to concave type negative pressure tank one side bottom, protection structure equiangular settings is in the inside of regulating plate.

Preferably, protective structure includes protruding type air inlet, inside the regulating plate of concave type negative pressure tank bottom was seted up to angles such as protruding type air inlet, and the angle such as protruding type air inlet top seted up the exhaust hole that extends to concave type negative pressure tank inside, the intermediate position department on the inside top of protruding type air inlet installs reset spring, and reset spring's bottom installs the movable block, the vertical ventilation rod that extends to the regulating plate outside of installing in movable block bottom, and ventilation rod's bottom installs the baffle, the fixture block is installed to the both sides on baffle top, and the angle such as the inside bottom of regulating plate seted up with fixture block matched with card hole.

Preferably, the filtering structure comprises a mounting groove, an activated carbon plate, a shifting plate, a sliding plate and a compression spring, the mounting groove is mounted at the top end and the bottom end of the two sides in the filtering box, the compression spring is mounted on one side of the inside of the mounting groove at equal intervals, the sliding plate is connected to the inside of the mounting groove on one side of the compression spring in a sliding mode, the sliding plate is arranged in the mounting groove on one side of the shifting plate, and the activated carbon plate is mounted inside the filtering box at one end of the sliding plate.

Preferably, the shape of activated carbon plate is W type, and activated carbon plate is about the vertical axis symmetric distribution of rose box.

Preferably, seal structure includes extrusion piece, sealing washer, fixed spring and seal groove, the seal groove ring shape is seted up in the inside of regulating plate, and the inside equal angle of one side of seal groove installs fixed spring, the inside sliding connection of seal groove on one side of fixed spring has the extrusion piece, and the sealing washer is installed to the one end annular of extrusion piece.

Preferably, the baffle is in the shape of an inverted triangle, and the middle position of the top end of the baffle is positioned between the bottom ends of the ventilation rods and is in a welding integrated structure.

Preferably, the lower end of the surface of the air vent rod is provided with a rubber ring, and the outer diameter of the cross section of the rubber ring is equal to the inner diameter of the cross section of the lower end of the convex air inlet.

Compared with the prior art, the utility model has the beneficial effects that:

(1) by arranging the concave negative pressure box, the convex air inlet and the baffle, air below the adjusting plate is pumped away through the convex air inlet, and along with the process of vacuumizing, the resin surface can contact with the baffle, and the baffle gradually rises under the action of atmospheric pressure, so that the vent rod moves to drive the rubber ring to block the lower end of the convex air inlet, the possibility that resin is pumped into the convex air inlet is further avoided, at the moment, a partial gap is reserved between the top end of the baffle and the bottom end of the adjusting plate, the residual air is conveniently pumped out through the through hole on the surface of the vent rod until the clamping block is clamped into the clamping hole, the adjusting plate is completely contacted with the top end of the baffle, sealing is realized, the vacuumizing effect can be ensured under the condition that the resin is pumped out, and the production and processing efficiency of polylactic resin is further ensured;

(2) by arranging the threaded rod, the adjusting plate and the sealing structure, proper polylactic resin is injected into the tank body through the feed hopper, then the adjusting plate stably descends in the tank body by rotating the threaded rod, the adjusting plate is close to the horizontal plane of the resin, air at the lower end of the adjusting plate is discharged, the amount of subsequent air pumping is reduced, the vacuum pumping efficiency is improved conveniently, the energy consumption is reduced, meanwhile, the elastic force of the fixing spring is utilized, the extrusion block always exerts multiple forces on the sealing ring, the sealing ring always tends to expand outwards, the gap between the inner wall of the tank body and the adjusting plate is reduced, and the sealing performance of the sealing ring is ensured;

(3) through being provided with rose box and filtration, in the evacuation process, through the activated carbon plate of W type, air flow rate is reduced, increase and air area of contact, be convenient for adsorb impurity or peculiar smell in the air, improve the adsorptivity, and then can avoid impurity to damage vacuum machine or peculiar smell emission and cause the pollution, can regularly stir simultaneously and dial the board, later take out the activated carbon plate and change through the sliding plate at the inside slip of mounting groove, guarantee the device filter effect, avoid long-time use to lead to the adsorptivity of activated carbon plate to reduce.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic top cross-sectional view of the present invention;

FIG. 3 is an enlarged partial view of the baffle of the present invention after movement;

fig. 4 is an enlarged schematic view of the filter structure of the present invention.

In the figure: 1. a filter box; 2. a filter structure; 201. mounting grooves; 202. an activated carbon plate; 203. dialing a plate; 204. a sliding plate; 205. a compression spring; 3. a threaded rod; 4. a vacuum machine; 5. a tank body; 6. a concave negative pressure tank; 7. an adjusting plate; 8. a sealing structure; 801. extruding the block; 802. a seal ring; 803. fixing the spring; 804. a sealing groove; 9. a convex air inlet; 10. a baffle plate; 11. a rubber ring; 12. a ventilation bar; 13. a feed hopper; 14. a clamping block; 15. a clamping hole; 16. a movable block; 17. a return spring; 18. and (4) exhausting holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, a vacuum apparatus for processing polylactic acid resin comprises a tank 5 and a feed hopper 13, and further comprises a filter structure 2 for preventing odor or other impurities from being discharged, a sealing structure 8 for improving vacuum efficiency, and a protective structure for preventing resin from being extracted;

the upper end of one side of the tank body 5 is provided with a feed hopper 13, one end of one side of the top end of the tank body 5 is provided with a vacuum machine 4, the input end of the vacuum machine 4 is electrically connected with a starting switch through a wire, the model of the vacuum machine 4 can be VFZ401PN, one end of the other side of the top end of the tank body 5 is provided with a filter box 1, the top end of one side of the filter box 1 is communicated with the output end of the vacuum machine 4 through a guide pipe, and the filter structures 2 are arranged on two sides in the filter box 1;

the middle position of the top end of the tank body 5 is rotatably connected with a threaded rod 3, the bottom end of the threaded rod 3 extends into the tank body 5 and is provided with an adjusting plate 7 through a bearing, and a sealing structure 8 is arranged in the adjusting plate 7;

the top end of the adjusting plate 7 is provided with a concave negative pressure box 6, the bottom end of one side of the concave negative pressure box 6 is communicated with one side of the bottom end of the filter box 1 through a corrugated pipe, and the protection structure is arranged in the adjusting plate 7 at equal angles;

referring to fig. 1-4, a vacuum apparatus for processing polylactic acid resin further comprises a protection structure, the protection structure comprises a convex air inlet 9, the convex air inlet 9 is arranged inside an adjusting plate 7 at the bottom end of a concave negative pressure tank 6 at an equal angle, an exhaust hole 18 extending into the concave negative pressure tank 6 is arranged at the top end of the convex air inlet 9 at an equal angle, a return spring 17 is arranged at the middle position of the top end inside the convex air inlet 9, a movable block 16 is arranged at the bottom end of the return spring 17, a ventilation rod 12 extending to the outside of the adjusting plate 7 is vertically arranged at the bottom end of the movable block 16, a baffle 10 is arranged at the bottom end of the ventilation rod 12, clamping blocks 14 are arranged at two sides of the top end of the baffle 10, and clamping holes 15 matched with the clamping blocks 14 are arranged at an equal angle at the bottom end inside the adjusting plate 7;

the baffle 10 is in an inverted triangle shape, and the middle position of the top end of the baffle 10 is positioned between the bottom ends of the ventilation rods 12 and is in a welding integrated structure;

the lower end of the surface of the ventilation rod 12 is provided with a rubber ring 11, and the outer diameter of the cross section of the rubber ring 11 is equal to the inner diameter of the cross section of the lower end of the convex air inlet 9;

specifically, as shown in fig. 1, fig. 2 and fig. 3, the air below the adjusting plate 7 is drawn away through the convex air inlet 9, meanwhile, the inverted triangle-shaped baffle 10 is utilized, the possibility that the resin is drawn out is reduced, meanwhile, along with the vacuum pumping, the resin surface can contact the baffle 10, and under the action of the atmospheric pressure, the baffle 10 gradually rises, further, the vent rod 12 moves to drive the rubber ring 11 to block the lower end of the convex air inlet 9, the possibility that the resin is drawn into the convex air inlet 9 is further avoided, a partial gap still exists between the top end of the baffle 10 and the bottom end of the adjusting plate 7 at the moment, the remaining air is conveniently drawn out through the through hole on the surface of the vent rod 12 until the clamping block 14 is clamped into the clamping hole 15, then, the adjusting plate 7 and the top end of the baffle 10 are completely contacted, sealing is realized, and on the premise that the quality of vacuum pumping is guaranteed, the resin can be prevented from being drawn out.

Example 2: the filtering structure 2 comprises an installation groove 201, an activated carbon plate 202, a shifting plate 203, a sliding plate 204 and a compression spring 205, wherein the installation groove 201 is installed at the top end and the bottom end of two sides in the filtering box 1, the compression springs 205 are installed at equal intervals on one side in the installation groove 201, the shifting plate 203 is connected in the installation groove 201 on one side of the compression spring 205 in a sliding mode, the sliding plate 204 is arranged in the installation groove 201 on one side of the shifting plate 203, and the activated carbon plate 202 is installed in the filtering box 1 at one end of the sliding plate 204;

the activated carbon plate 202 is W-shaped, and the activated carbon plate 202 is symmetrically distributed about the vertical central axis of the filter box 1;

specifically, as shown in fig. 1, 2 and 4, in the process of vacuum pumping, the air flow rate is reduced through the W-shaped activated carbon plate 202, the contact area between the W-shaped activated carbon plate and the air is increased, so that impurities or peculiar smell in the air can be adsorbed conveniently, the impurities can be prevented from damaging the vacuum machine 4 or causing pollution due to peculiar smell emission, meanwhile, the poking plate 203 can be periodically poked, and then the activated carbon plate 202 is taken out and replaced through the sliding plate 204 in the installation groove 201 in a sliding manner, so that the filtering effect of the device is ensured.

Example 3: the sealing structure 8 comprises an extrusion block 801, a sealing ring 802, a fixed spring 803 and a sealing groove 804, the sealing groove 804 is annularly formed in the adjusting plate 7, the fixed spring 803 is installed on one side of the inside of the sealing groove 804 at an equal angle, the extrusion block 801 is slidably connected into the sealing groove 804 on one side of the fixed spring 803, and the sealing ring 802 is annularly installed on one end of the extrusion block 801;

specifically, as shown in fig. 1, 2 and 3, the adjusting plate 7 is stably lowered in the tank 5 by rotating the threaded rod 3, so that the adjusting plate 7 is close to the horizontal plane of the resin, the amount of subsequent air pumping is reduced, the vacuum pumping efficiency is improved, and meanwhile, the extrusion block 801 exerts a plurality of forces on the sealing ring 802 all the time by using the elastic force of the fixing spring 803, so that the sealing ring 802 tends to expand outwards all the time, the gap between the inner wall of the tank 5 and the adjusting plate 7 is reduced, and the sealing performance is ensured.

The working principle is as follows: when the device is used, firstly, a proper amount of polylactic resin is injected into the tank body 5 through the feed hopper 13, then the adjusting plate 7 stably descends in the tank body 5 by rotating the threaded rod 3, so that the adjusting plate 7 is close to the horizontal plane of the resin, further, air at the lower end of the adjusting plate 7 is discharged, the subsequent vacuumizing time is reduced, meanwhile, the elastic force of the fixing spring 803 is utilized, the extrusion block 801 always applies a plurality of forces to the sealing ring 802, further, the sealing ring 802 always tends to expand outwards, the gap between the inner wall of the tank body 5 and the adjusting plate 7 is reduced, and the sealing performance of the sealing ring is ensured;

then the feed hopper 13 is closed, then the power supply is connected externally, the vacuum machine 4 is started, so that negative pressure is generated inside the filter box 1 and the concave negative pressure box 6, further air below the adjusting plate 7 is pumped away through the convex air inlet 9, meanwhile, the possibility that resin is pumped out is reduced by utilizing the inverted triangular baffle 10, meanwhile, along with the process of vacuumizing, the resin surface can contact the baffle 10, and under the action of atmospheric pressure, the baffle 10 gradually rises, further the vent rod 12 moves to drive the movable block 16 to move and compress the return spring 17, then the lower end of the convex air inlet 9 is blocked by the rubber ring 11 on the surface of the vent rod 12, the possibility that resin is pumped into the convex air inlet 9 is further avoided, at the moment, a partial gap is reserved between the top end of the baffle 10 and the bottom end of the adjusting plate 7, so that the residual air can be pumped out through the through hole on the surface of the vent rod 12 until the clamping block 14 is clamped into the clamping hole 15, then the adjusting plate 7 is completely contacted with the top end of the baffle plate 10 to realize sealing;

simultaneously at the evacuation in-process, through the active carbon plate 202 of W type, air flow rate is reduced, be convenient for adsorb impurity or peculiar smell in the air, and then avoid impurity to damage vacuum machine 4 or peculiar smell emission to cause the pollution, can stir simultaneously regularly and dial board 203 for dial board 203 and remove compression spring 205, later take out and change active carbon plate 202 through sliding plate 204 at the inside slip of mounting groove 201, guarantee the device filter effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. A vacuum device for polylactic acid resin processing, includes jar body (5) and feeder hopper (13), its characterized in that: the vacuum pump also comprises a filtering structure (2) for avoiding the emission of peculiar smell or impurities, a sealing structure (8) for improving the vacuum pumping efficiency and a protection structure for avoiding the extraction of resin;

the vacuum filter is characterized in that a feed hopper (13) is installed at the upper end of one side of the tank body (5), a vacuum machine (4) is installed at one end of one side of the top end of the tank body (5), a filter box (1) is installed at one end of the other side of the top end of the tank body (5), the top end of one side of the filter box (1) is communicated with the output end of the vacuum machine (4) through a guide pipe, and the filter structures (2) are arranged on two sides of the interior of the filter box (1);

the middle position of the top end of the tank body (5) is rotatably connected with a threaded rod (3), the bottom end of the threaded rod (3) extends into the tank body (5) and is provided with an adjusting plate (7) through a bearing, and the sealing structure (8) is arranged in the adjusting plate (7);

concave type negative pressure tank (6) are installed on the top of regulating plate (7), and one side intercommunication in bellows and rose box (1) bottom is passed through to concave type negative pressure tank (6) one side bottom, protection structure is waiting the inside of angle setting at regulating plate (7).

2. The vacuum apparatus for processing polylactic acid resin according to claim 1, wherein: protective structure includes protruding type air inlet (9), angle such as protruding type air inlet (9) is seted up inside regulating plate (7) of concave type negative pressure case (6) bottom, and angle such as protruding type air inlet (9) top offer extend to the inside exhaust hole (18) of concave type negative pressure case (6), the intermediate position department on the inside top of protruding type air inlet (9) installs reset spring (17), and reset spring's (17) bottom installs movable block (16), vertical installation in movable block (16) bottom extends to regulating plate (7) outside ventilation rod (12), and the bottom of ventilation rod (12) installs baffle (10), fixture block (14) are installed to the both sides on baffle (10) top, and angle such as regulating plate (7) inside bottom offer with fixture block (14) matched with card hole (15).

3. The vacuum apparatus for processing polylactic acid resin according to claim 1, wherein: filtration (2) are including mounting groove (201), activated carbon plate (202), dial board (203), sliding plate (204) and pressure spring (205), the top and the bottom at rose box (1) inside both sides are installed to mounting groove (201), and equidistant pressure spring (205) of installing in the inside one side of mounting groove (201), the inside sliding connection of mounting groove (201) of pressure spring (205) one side has dials board (203), and dials inside sliding plate (204) that is provided with of mounting groove (201) of board (203) one side, rose box (1) internally mounted of sliding plate (204) one end has activated carbon plate (202).

4. The vacuum apparatus for processing polylactic acid resin according to claim 3, wherein: the shape of the activated carbon plate (202) is W-shaped, and the activated carbon plate (202) is symmetrically distributed around the vertical central axis of the filter box (1).

5. The vacuum apparatus for processing polylactic acid resin according to claim 1, wherein: seal structure (8) are including extrusion piece (801), sealing washer (802), fixed spring (803) and seal groove (804), seal groove (804) annular is seted up in the inside of regulating plate (7), and seal groove (804) inside one side equal angle install fixed spring (803), the inside sliding connection of seal groove (804) of fixed spring (803) one side has extrusion piece (801), and the one end annular of extrusion piece (801) installs sealing washer (802).

6. The vacuum apparatus for processing polylactic acid resin according to claim 2, wherein: the baffle (10) is in an inverted triangle shape, and the middle position of the top end of the baffle (10) is positioned between the bottom ends of the ventilation rods (12) and is in a welding integrated structure.

7. The vacuum apparatus for processing polylactic acid resin according to claim 2, wherein: the lower extreme on ventilation bar (12) surface is installed rubber circle (11), and the external diameter of rubber circle (11) cross section equals the internal diameter of protruding type air inlet (9) lower extreme cross section.

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