Polylactic acid and wood fiber foaming equipment

Abstract

The utility model relates to polylactic acid and wood fiber foaming equipment which comprises a shell and a slag discharging pipe fixedly arranged at the bottom of the shell in a penetrating mode, the slag discharging pipe is communicated with the interior of the shell, a first valve is fixedly arranged on the peripheral side of the slag discharging pipe in a sleeved mode, and a feeding pipe is fixedly arranged on the upper half portion of one side of the shell in a penetrating mode. A scraping ring is slidably connected to the upper half portion of the inner circumferential face of the shell, a plurality of receding openings are formed in the top of the scraping ring, and high-pressure spray heads are rotatably connected into the receding openings through pin shafts. The utility model relates to the technical field of foaming equipment. When the inner wall of the shell needs to be cleaned, the spray head sprays water towards the inner circumferential face of the shell and is matched with the scraping ring to move downwards to scrape off foaming agents on the inner circumferential face of the shell, and when the scraping ring moves to be close to the inner bottom wall of the shell, the electric push rod works to drive the high-pressure spray head to rotate, so that the high-pressure spray head sprays high-pressure water flow towards the inner bottom wall of the shell. And a foaming agent attached to the inner bottom wall of the shell is flushed down, so that the cleaning effect of the inner wall of the shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming equipment, in particular to a polylactic acid and wood fiber foaming equipment. Background Art

[0002] Polylactic acid (PLA) is a polymer derived from lactic acid, a readily available and renewable raw material. The production process is pollution-free, and the product is biodegradable, allowing for recycling in nature. Therefore, it is an ideal green polymer material. When foaming polylactic acid with wood fiber, a blowing agent is required.

[0003] For example, Chinese patent publication number CN219748729U discloses a foaming agent mixing device, including a tank body, a first motor is fixedly installed on the top of the tank body through a support block, and the output end of the first motor is fixedly connected to a gear; the utility model drives the cleaning ring to move vertically by the first motor, which not only allows the connecting plate to allow the foaming agent to flow up and down during the stirring process of the foaming agent by the stirring mechanism, thereby improving the stirring speed, but also allows the cleaning ring to scrape off the foaming agent remaining on the inner wall of the tank body after the stirring mechanism completes stirring the foaming agent. At the same time, the overall structure is relatively simple and very convenient to use, which improves the working efficiency of the device. The foaming agent can be poured into the tank body through the feed hopper, and the second motor can be started to drive the stirring roller to rotate. The rotation of the stirring roller can drive the stirring blade to rotate, and the rotation of the stirring blade can stir and mix the foaming agent.

[0004] In this patent, the vertical movement of the cleaning ring can scrape off the foaming agent attached to the inner wall of the tank body. However, during the foaming agent mixing process, the foaming agent will also adhere to the bottom wall of the tank body. This patent makes it difficult to remove the foaming agent attached to the bottom wall of the tank body, thereby reducing the tank cleaning effect. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a polylactic acid and wood fiber foaming device to solve the technical problems mentioned in the above background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A polylactic acid and wood fiber foaming equipment comprises a shell and a slag discharge pipe fixedly penetrated through the bottom of the shell, the slag discharge pipe is communicated with the interior of the shell, a first valve is fixedly sleeved on the outer peripheral side of the slag discharge pipe, a feed pipe is fixedly penetrated through the upper half of one side of the shell, a scraper ring is slidably connected to the upper half of the inner peripheral surface of the shell, a plurality of avoidance ports are opened on the top of the scraper ring, a high-pressure nozzle is rotatably connected to the avoidance port through a pin shaft, a plurality of electric push rods are fixedly connected to the top of the scraper ring, and a plurality of output ends of the electric push rods are fixedly connected to a moving ring, a plurality of connecting rods are hinged to the bottom of the moving ring, and the bottom end of the connecting rod is hinged to the corresponding high-pressure nozzle, a spraying part is provided above the high-pressure nozzle, and an adjustment part is provided on the upper half of the shell.

[0008] Furthermore, the adjusting part includes an outer gear ring rotatably connected to the top of the shell, a plurality of screw sleeves are rotatably passed through the upper half of the shell, a screw is threadedly connected to the lower half of the screw sleeve, the bottom end of the screw is fixedly connected to the top of the scraper ring, a driven gear is fixedly sleeved on the outer peripheral surface of the screw sleeve, and a plurality of the driven gears are engaged with the outer gear ring, and a driving member is provided on the top of the shell, which drives the outer gear ring to rotate.

[0009] Furthermore, the spraying part includes a water tank fixedly connected to the top of the shell, a water pump is fixedly connected to the top wall of the shell, the water pump input end is communicated with the water tank, an annular cavity is opened in the moving ring, the water pump output end is communicated with the annular cavity through a hose, and the lower half of the annular cavity is connected to several of the high-pressure nozzles through a hose.

[0010] Furthermore, the driving member includes a motor 1 fixedly connected to the top of the shell, and the output end of the motor 1 is transmission-connected to a driving gear, which is meshed with the outer gear ring.

[0011] Furthermore, a second motor is fixedly connected to the top of the shell, and a rotating rod is transmission-connected to the output end of the second motor. The rotating rod rotates through the top wall of the shell and extends into the shell. A plurality of stirring rods are fixedly sleeved on the outer peripheral surface of the rotating rod located inside the shell, and the stirring rods are located below the feed pipe.

[0012] Furthermore, the inner bottom wall of the shell is arranged to be inclined downward on the side close to the slag discharge pipe.

[0013] In summary, the present invention has at least one of the following beneficial technical effects:

[0014] 1. This polylactic acid and wood fiber foaming equipment, when it is necessary to clean the inner wall of the shell, the nozzle sprays water toward the inner circumference of the shell, and cooperates with the scraper ring to move downward to scrape off the foaming agent on the inner circumference of the shell. When the scraper ring moves close to the inner bottom wall of the shell, the electric push rod drives the high-pressure nozzle to rotate, so that the high-pressure nozzle sprays high-pressure water toward the inner bottom wall of the shell, flushing off the foaming agent attached to the inner bottom wall of the shell, thereby improving the cleaning effect of the inner wall of the shell;

[0015] 2. In this polylactic acid and wood fiber foaming equipment, motor 2 works to stir and mix the raw materials entering the shell, thereby improving the foaming quality, and the stirring rod will not hinder the vertical movement of the scraping ring and the moving ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a three-dimensional diagram of a polylactic acid and wood fiber foaming device according to this embodiment;

[0018] Figure 2 is a front cross-sectional view of a polylactic acid and wood fiber foaming device according to this embodiment;

[0019] Figure 3 This embodiment Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a cross-sectional view of a polylactic acid and wood fiber foaming device according to this embodiment.

[0021] In the figure, 1. shell; 2. slag discharge pipe; 3. first valve; 4. feed pipe; 5. scraper ring; 6. avoidance port; 7. high-pressure nozzle; 8. electric push rod; 9. motion ring; 10. connecting rod; 11. spraying part; 111. water tank; 112. water pump; 113. annular cavity; 12. adjustment part; 121. outer gear ring; 122. screw sleeve; 123. screw; 124. driven gear; 125. driving part; 13. motor 2; 14. rotating rod; 15. stirring rod. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings.

[0023] Example:

[0024] Reference Figures 1 to 4The utility model discloses a polylactic acid and wood fiber foaming equipment, including a shell 1 and a slag discharge pipe 2 fixedly arranged at the bottom of the shell 1, the slag discharge pipe 2 is communicated with the interior of the shell 1, and a first valve 3 is fixedly sleeved on the outer peripheral side of the slag discharge pipe 2, and a feed pipe 4 is fixedly penetrated on the upper half of one side of the shell 1, and a scraper ring 5 is slidably connected to the upper half of the inner circumference of the shell 1, and a plurality of avoidance ports 6 are opened on the top of the scraper ring 5. A high-pressure nozzle 7 is rotatably connected to the avoidance port 6 through a pin shaft, and a plurality of electric push rods 8 are fixedly connected to the top of the scraper ring 5, and the output ends of the plurality of electric push rods 8 are fixedly connected to a moving ring 9. A plurality of connecting rods 10 are hinged at the bottom of the moving ring 9, and the bottom end of the connecting rod 10 is hinged to the corresponding high-pressure nozzle 7. A spraying part 11 is provided above the high-pressure nozzle 7, and an adjusting part 12 is provided on the upper half of the shell 1.

[0025] In this embodiment, the foaming agent enters the housing 1 through a feed pipe 4. Initially, the first valve 3 is closed. A discharge pipe is fixedly installed in the lower half of one side of the housing 1. A second valve is fixedly mounted on the outer periphery of the discharge pipe. The end of the discharge pipe away from the housing 1 is connected to the foaming device body. Initially, the second valve is closed. Once the foaming agent is mixed, the second valve opens, allowing the foaming agent to enter the foaming device body through the discharge pipe, thereby producing a microcellular foamed plastic product. The foaming agent contains polylactic acid and wood fiber material.

[0026] After the foaming agent is fully discharged from the shell 1 , the second valve is closed, the first valve 3 is opened, and the inner wall of the shell 1 is cleaned through the spraying part 11 and the regulating part 12 .

[0027] In a further preferred embodiment of the present invention, Figure 1 As shown, the adjusting portion 12 includes an outer gear ring 121 rotatably connected to the top of the shell 1, and a plurality of screw sleeves 122 are rotatably penetrated on the upper half of the shell 1. The lower half of the screw sleeve 122 is threadedly connected to a screw rod 123, and the bottom end of the screw rod 123 is fixedly connected to the top of the scraper ring 5. A driven gear 124 is fixedly sleeved on the outer peripheral surface of the screw sleeve 122, and the plurality of driven gears 124 are all engaged with the outer gear ring 121. A driving member 125 is provided on the top of the shell 1, and the driving member 125 drives the outer gear ring 121 to rotate.

[0028] The driving member 125 includes a motor 1 fixedly connected to the top of the housing 1 , and an output end of the motor 1 is transmission-connected to a driving gear, which is meshed with the outer gear ring 121 .

[0029] In this embodiment, the motor drives the driving gear to rotate, the driving gear drives the outer ring gear 121 to rotate, the outer ring gear 121 drives a number of driven gears 124 to rotate, the driven gear 124 drives the screw sleeve 122 to rotate, the rotation of the screw sleeve 122 drives the screw 123 to move downward, thereby driving the scraper ring 5 to move downward, and the scraper ring 5 drives the high-pressure nozzle 7, the electric push rod 8 and the moving ring 9 to move downward synchronously.

[0030] The spraying unit 11 operates to cause the high-pressure nozzle 7 to spray water toward the inner circumference of the shell 1. The driving member 125 operates to drive the high-pressure nozzle 7 and the scraper ring 5 downward. The scraper ring 5 can scrape off the foaming agent attached to the inner circumference of the shell 1, thereby cleaning the inner circumference of the shell 1. The wastewater and the scraped foaming agent are discharged from the shell 1 through the slag discharge pipe 2.

[0031] When the scraper ring 5 moves close to the inner bottom wall of the shell 1, the driving member 125 stops, the electric push rod 8 works, driving the moving ring 9 to move upward, the moving ring 9 drives the connecting rod 10 to move, and the connecting rod 10 drives the high-pressure nozzle 7 to rotate, so that the injection position of the high-pressure nozzle 7 moves to the inner bottom wall of the shell 1 and gradually moves toward the slag discharge pipe 2, flushing the foaming agent attached to the inner bottom wall of the shell 1 and discharging it from the shell 1 through the slag discharge pipe 2. Finally, the water pump 112 stops, the motor rotates in the reverse direction, driving the scraper ring 5 to move to the initial position, and the electric push rod 8 moves in the reverse direction to drive the high-pressure nozzle 7 to return to its initial state.

[0032] In a further preferred embodiment of the present invention, Figure 2 and Figure 3 As shown, the spraying portion 11 includes a water tank 111 fixedly connected to the top of the shell 1, a water pump 112 is fixedly connected to the top wall of the shell 1, the input end of the water pump 112 is communicated with the water tank 111, an annular cavity 113 is opened in the moving ring 9, the output end of the water pump 112 is communicated with the annular cavity 113 through a hose, and the lower half of the annular cavity 113 is connected to several high-pressure nozzles 7 through a hose.

[0033] In this embodiment, the water pump 112 operates to transfer water from the water tank 111 to the annular cavity 113, and then the water is sprayed out through the various high-pressure nozzles 7. Because the pipe between the water pump 112 and the movement ring 9 is a hose, the movement ring 9 can move vertically relative to the water pump 112. Because the pipe between the movement ring 9 and the high-pressure nozzles 7 is a hose, the high-pressure nozzles 7 can rotate relative to the movement ring 9.

[0034] In a further preferred embodiment of the present invention, Figure 2 As shown, a motor 2 13 is fixedly connected to the top of the shell 1, and a rotating rod 14 is transmission-connected to the output end of the motor 2 13. The rotating rod 14 rotates through the top wall of the shell 1 and extends into the shell 1. The outer peripheral surface of the rotating rod 14 is located inside the shell 1 and is fixedly sleeved with several stirring rods 15. The stirring rods 15 are located below the feed pipe 4.

[0035] In this embodiment, the motor 2 13 drives the rotating rod 14 to rotate, and the rotating rod 14 drives the stirring rod 15 to rotate, thereby stirring the raw materials entering the housing 1. The scraper ring 5 and the moving ring 9 will not contact the rotating rod 14 during the downward movement.

[0036] In a further preferred embodiment of the present invention, Figure 2 As shown, the inner bottom wall of the shell 1 is arranged to be inclined downward on the side close to the slag discharge pipe 2 .

[0037] In this embodiment, the sewage falling onto the inner bottom wall of the shell 1 and the scraped and washed foaming agent residues can fully move toward the slag discharge pipe 2 under the action of gravity and be discharged through the slag discharge pipe 2.

[0038] The implementation principle of the above embodiment is:

[0039] In the initial state, the first valve 3 and the second valve are both closed, and raw materials are added to the shell 1 through the feed pipe 4. The motor 2 13 drives the rotating rod 14 to rotate, and the rotation of the rotating rod 14 drives the stirring rod 15 to rotate, thereby stirring the raw materials entering the shell 1.

[0040] When the foaming agent is stirred, the second valve is opened, and the foaming agent enters the foaming equipment body through the discharge pipe, thereby producing microporous foamed plastic products.

[0041] After the foaming agent has been fully discharged from the housing 1, the second valve is closed and the first valve 3 is opened. The driving member 125 rotates the outer ring gear 121, which in turn rotates the plurality of driven gears 124. The driven gears 124 rotate the screw sleeve 122, which in turn rotates the screw sleeve 122, which in turn drives the screw 123 downward, thereby driving the scraper ring 5 downward. The scraper ring 5 then drives the high-pressure nozzle 7, the electric push rod 8, and the moving ring 9 to move downward synchronously. At the same time, the water pump 112 operates, transferring water from the water tank 111 into the annular cavity 113, where it is then sprayed through the various high-pressure nozzles 7 onto the inner circumference of the housing 1. With the cooperation of the high-pressure nozzles 7 and the scraper ring 5, the foaming agent adhering to the inner wall of the housing 1 is scraped off.

[0042] When the scraper ring 5 moves close to the inner bottom wall of the shell 1, the driving part 125 stops, the electric push rod 8 works, and drives the moving ring 9 to move upward. The moving ring 9 drives the connecting rod 10 to move, and the connecting rod 10 drives the high-pressure nozzle 7 to rotate, so that the injection position of the high-pressure nozzle 7 moves to the inner bottom wall of the shell 1 and gradually moves toward the slag discharge pipe 2, flushing down the foaming agent attached to the inner bottom wall of the shell 1 and discharging it from the shell 1 through the slag discharge pipe 2.

[0043] Finally, the water pump 112 stops, the motor rotates in the reverse direction, driving the scraper ring 5 to move to the initial position, the electric push rod 8 moves in the reverse direction to drive the high-pressure nozzle 7 to return to the initial state, and the first valve 3 is closed. At this time, the foaming agent raw material can continue to be added to the shell 1, and the above steps are repeated.

[0044] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. A polylactic acid and wood fiber foaming device, comprising a housing (1) and a slag discharge pipe (2) fixedly penetrated through the bottom of the housing (1), the slag discharge pipe (2) being in communication with the interior of the housing (1), a first valve (3) being fixedly sleeved on the outer peripheral side of the slag discharge pipe (2), and a feed pipe (4) being fixedly penetrated through the upper half of one side of the housing (1), characterized in that: A scraper ring (5) is slidably connected to the upper half of the inner circumference of the shell (1), a plurality of avoidance openings (6) are opened on the top of the scraper ring (5), a high-pressure nozzle (7) is rotatably connected to the avoidance opening (6) via a pin shaft, a plurality of electric push rods (8) are fixedly connected to the top of the scraper ring (5), the output ends of the plurality of electric push rods (8) are commonly fixedly connected to a motion ring (9), a plurality of connecting rods (10) are hinged to the bottom of the motion ring (9), the bottom ends of the connecting rods (10) are hinged to the corresponding high-pressure nozzles (7), a spraying portion (11) is provided above the high-pressure nozzles (7), and an adjusting portion (12) is provided on the upper half of the shell (1).

2. The polylactic acid and wood fiber foaming equipment according to claim 1, characterized in that: The adjusting portion (12) includes an outer gear ring (121) rotatably connected to the top of the housing (1); a plurality of screw sleeves (122) are rotatably provided on the upper half of the housing (1); a screw rod (123) is threadedly connected to the lower half of the screw sleeve (122); the bottom end of the screw rod (123) is fixedly connected to the top of the scraper ring (5); a driven gear (124) is fixedly provided on the outer peripheral surface of the screw sleeve (122); a plurality of the driven gears (124) are all meshed with the outer gear ring (121); a driving member (125) is provided on the top of the housing (1); and the driving member (125) drives the outer gear ring (121) to rotate.

3. The polylactic acid and wood fiber foaming equipment according to claim 2, characterized in that: The spraying portion (11) comprises a water tank (111) fixedly connected to the top of the shell (1); a water pump (112) is fixedly connected to the top wall of the shell (1); an input end of the water pump (112) is communicated with the water tank (111); an annular cavity (113) is provided in the movement ring (9); an output end of the water pump (112) is communicated with the annular cavity (113) through a hose; and a lower half of the annular cavity (113) is communicated with a plurality of the high-pressure nozzles (7) through a hose.

4. The polylactic acid and wood fiber foaming equipment according to claim 3, characterized in that: The driving member (125) includes a motor 1 fixedly connected to the top of the housing (1), and the output end of the motor 1 is transmission-connected to a driving gear, which is meshed with the outer gear ring (121).

5. The polylactic acid and wood fiber foaming equipment according to claim 4, characterized in that: The top of the housing (1) is fixedly connected to a second motor (13), and the output end of the second motor (13) is transmission-connected to a rotating rod (14). The rotating rod (14) rotates through the top wall of the housing (1) and extends into the housing (1). The outer peripheral surface of the rotating rod (14) is located inside the housing (1) and is fixedly sleeved with a plurality of stirring rods (15). The stirring rods (15) are located below the feed pipe (4).

6. The polylactic acid and wood fiber foaming equipment according to claim 5, characterized in that: The inner bottom wall of the shell (1) is arranged to be inclined downward on the side close to the slag discharge pipe (2).

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