Negative pressure feeding device for foam production

Abstract

The utility model relates to the technical field of feeding devices, and discloses a negative pressure feeding device for foam production, which comprises a bottom plate, supporting pipes, a material box, a conveying pipe, a transfer box, a recycling pipe, a recycling box, a vacuum suction fan, an air suction pipe, an exhaust pipe, a stirring mechanism and a material returning mechanism, the supporting pipes are fixedly mounted at the top of the bottom plate, the material box is fixedly mounted at the top ends of the supporting pipes, and the conveying pipe is fixedly mounted at the bottom of the bottom plate. A through hole is formed in the supporting pipe, the conveying pipe is fixedly installed at the bottom of the material box, and the transfer box is fixedly installed at the end, away from the material box, of the conveying pipe. The device has the following advantages and effects that raw materials in the material box can be stirred and heated, separation and layering of the raw materials after long-time standing are avoided, uniform texture of the raw materials is guaranteed, the production quality of foam is improved, the raw materials collected in the recycling box can be pumped through the water pump and conveyed back to the material box through the material returning pipe, and the production efficiency is improved. Damage of foam raw materials to the vacuum suction fan is avoided, and meanwhile raw material loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding devices, in particular to a negative pressure feeding device for foam production. Background Art

[0002] At present, each foam production needs a corresponding set of foam production equipment, that is, one foam production equipment corresponds to a storage barrel and a vacuum suction device. When multiple production lines are in operation, these equipment have high supporting costs, are high-energy consumption equipment in production, and occupy a large amount of production costs of the enterprise.

[0003] In the prior art, a Chinese patent with the announcement number CN205240745U discloses a negative pressure feeding device for a foam production device, including a vacuum suction fan, a negative pressure air duct connected to the vacuum suction fan, a plurality of distribution pipes connected to the negative pressure air duct, each distribution pipe connected to a storage barrel, the distribution pipe connected to the top of the storage barrel, the storage barrel connected to the silo through a suction pipe, the bottom of the storage barrel connected to the foam production machine through a feeding pipe, and a control valve is provided on the feeding pipe. Although the device can feed multiple foam production devices, when the suction force is too large or the storage barrel is full, the foam raw material will flow into the negative pressure air duct, which may damage the vacuum suction fan and affect the foam production process.

[0004] Therefore, it is necessary to design a negative pressure feeding device for foam production that can collect and process excess foam raw materials to ensure normal foam production and feeding. Utility Model Content

[0005] The utility model aims to provide a negative pressure feeding device for foam production, which can collect and process the excess foam raw materials flowing out, so as to ensure the effect of normal foam production and feeding.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a negative pressure feeding device for foam production, comprising a base plate, a support pipe, a material box, a conveying pipe, a transfer box, a recovery pipe, a recovery box, a vacuum fan, an air suction pipe, an exhaust pipe, a stirring mechanism and a material return mechanism, the support pipes are all fixedly mounted on the top of the base plate, the material box is fixedly mounted on the top of the support pipe, a through hole is opened on the support pipe, the conveying pipe is fixedly mounted on the bottom of the material box, the transfer box is fixedly mounted on the end of the conveying pipe away from the material box, the recovery pipe is fixedly mounted on the right side of the transfer box, the recovery box is fixedly mounted on the top of the base plate and located on the right side of the transfer box, the end of the recovery pipe away from the transfer box extends into the recovery box, the vacuum fan is fixedly mounted on the top of the recovery box, the air suction pipe is fixedly mounted on the suction end of the vacuum fan, the left end of the air suction pipe extends into the recovery pipe, the exhaust pipe is fixedly mounted on the discharge end of the vacuum fan, the stirring mechanism is arranged on the material box, the stirring mechanism is used to stir the raw materials, the material return mechanism is arranged on the base plate, and the material return mechanism is used to return the collected raw materials to the material box.

[0007] By adopting the above technical scheme, when the suction force is too large, the excess foam raw materials can be collected and transported back to the material box to avoid the raw materials from damaging the vacuum blower and reduce the loss of raw materials. The raw materials in the material box can also be stirred and kept warm to ensure the uniform texture of the raw materials and improve the production quality of the foam.

[0008] The utility model is further configured as follows: the return mechanism includes a water pump, a liquid inlet pipe, a first feed pipe, a first feed valve and a return pipe, the water pump is fixedly mounted on the top of the base plate, the liquid inlet pipe is fixedly mounted on the input end of the water pump, one end of the liquid inlet pipe away from the water pump extends into the recovery box, the first feed pipe is fixedly mounted on the top of the box, the first feed valve is fixedly mounted on the first feed pipe, the return pipe is fixedly mounted on the first feed pipe, and one end of the return pipe away from the first feed pipe is fixedly connected to the output end of the water pump.

[0009] By adopting the above technical solution, the raw materials in the recovery box can be extracted by a water pump and transported back to the box through a return pipe, thereby preventing the raw materials from damaging the vacuum blower and reducing raw material loss.

[0010] The utility model is further configured as follows: the stirring mechanism includes a mounting frame, a motor, a stirring shaft and a plurality of stirring rods; the mounting frame is fixedly mounted on the top of the material box, the motor is fixedly mounted on the mounting frame, the stirring shaft is fixedly mounted on the output shaft end of the motor, the bottom end of the stirring shaft extends into the material box, and the plurality of stirring rods are fixedly mounted on the stirring shaft and are evenly distributed.

[0011] By adopting the above technical solution, the raw materials in the material box can be fully stirred to avoid long-term static separation and stratification of the raw materials, ensure the uniform texture of the raw materials, and improve the production quality of the foam.

[0012] The utility model is further configured as follows: the bottom of the material box is a downwardly convex arc surface, a scraper rod is fixedly mounted on the stirring shaft, and the scraper rod is in sliding contact with the inner wall of the material box.

[0013] By adopting the above technical solution, it is possible to prevent the raw materials from adhering to the inner wall of the material box, thereby improving the utilization rate of the raw materials.

[0014] The utility model is further configured as follows: a mounting groove is provided on the arc-shaped inner wall of the material box, an arc-shaped heating plate is fixedly installed in the mounting groove, and the arc-shaped heating plate is in sliding contact with the scraper rod.

[0015] By adopting the above technical solution, the raw materials can be heated to avoid gradual cooling of the raw materials, thereby further improving the production quality of the foam.

[0016] The utility model is further configured as follows: a heat-insulating layer is fixedly installed on the outer wall of the material box.

[0017] By adopting the above technical solution, the heat loss of the raw materials in the material box can be effectively reduced and the quality of the foam raw materials can be improved.

[0018] The utility model is further configured as follows: a U-shaped support plate is fixedly installed on the top of the base plate, a plurality of evenly distributed storage boxes are fixedly installed on the top of the U-shaped support plate, a plurality of distribution pipes are fixedly installed on the top of the plurality of storage boxes, and the top ends of the plurality of distribution pipes are fixedly connected to the transfer box.

[0019] By adopting the above technical solution, it is possible to conveniently feed multiple foam production machines, improve production efficiency and reduce production investment.

[0020] The utility model is further configured as follows: a filter box is fixedly installed on the air suction pipe, and a filter net is detachably installed in the filter box.

[0021] By adopting the above technical solution, the foam raw material can be effectively filtered to prevent the foam raw material from damaging the vacuum blower.

[0022] The utility model is further configured as follows: a liquid level meter is fixedly installed on the front side of the recovery box.

[0023] By adopting the above technical solution, it is possible to easily grasp the amount of raw materials collected in the recycling box, and then transport the raw materials back to the material box.

[0024] The utility model is further configured as follows: a second feed pipe is fixedly installed on the top of the material box, and a second feed valve is fixedly installed on the second feed pipe.

[0025] By adopting the above technical solution, it is possible to conveniently add foam raw materials into the material box.

[0026] The beneficial effects of the utility model are:

[0027] 1. The utility model utilizes a return mechanism consisting of a water pump, a liquid inlet pipe, a first feed pipe, a first feed valve and a return pipe, so that the water pump can be used to extract the raw materials in the recovery box and transport them back to the box through the return pipe, thereby avoiding damage to the vacuum fan caused by the foam raw materials and reducing the loss of raw materials.

[0028] 2. The utility model can stir and heat the raw materials in the material box by utilizing the combined effect of the mounting frame, the motor, the stirring shaft and multiple stirring rods, the scraping rod, the arc-shaped heating plate and the insulation layer, so as to avoid the raw materials from being separated and stratified when standing for a long time, ensure the uniform texture of the raw materials and improve the production quality of the foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0031] Figure 2 It is a schematic diagram of the main cross-sectional structure of this embodiment.

[0032] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0033] Figure 4 It is a schematic diagram of the three-dimensional structure inside this embodiment.

[0034] In the figure, 1. bottom plate; 2. support pipe; 3. material box; 4. conveying pipe; 5. transfer box; 6. recovery pipe; 7. recovery box; 8. vacuum fan; 9. suction pipe; 10. exhaust pipe; 11. water pump; 12. liquid inlet pipe; 13. first feed pipe; 14. first feed valve; 15. return pipe; 16. mounting frame; 17. motor; 18. stirring shaft; 19. stirring rod; 20. scraper rod; 21. arc heating plate; 22. insulation layer; 23. U-shaped support plate; 24. storage box; 25. distribution pipe; 26. filter box; 27. filter screen; 28. liquid level meter; 29. ​​second feed pipe; 30. second feed valve. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a negative pressure feeding device for foam production, comprising a bottom plate 1, a support pipe 2, a material box 3, a conveying pipe 4, a transfer box 5, a recovery pipe 6, a recovery box 7, a vacuum fan 8, a suction pipe 9, an exhaust pipe 10, a stirring mechanism and a return mechanism. The support pipe 2 is fixedly mounted on the top of the bottom plate 1, the material box 3 is fixedly mounted on the top of the support pipe 2, a second feed pipe 29 is fixedly mounted on the top of the material box 3, a second feed valve 30 is fixedly mounted on the second feed pipe 29, a through hole is opened on the support pipe 2, and the conveying pipe 4 is fixedly mounted on the bottom of the material box 3. The transfer box 5 is fixedly installed at one end of the conveying pipe 4 away from the material box 3, the recovery pipe 6 is fixedly installed on the right side of the transfer box 5, the recovery box 7 is fixedly installed on the top of the bottom plate 1 and is located on the right side of the transfer box 5, and a liquid level meter 28 is fixedly installed on the front side of the recovery box 7. The liquid level meter 28 can be used to easily grasp the amount of foam raw materials in the recovery box 7, and then control the operation of the return mechanism to transport the collected foam raw materials back to the material box 3. The end of the recovery pipe 6 away from the transfer box 5 extends into the recovery box 7, and the vacuum fan 8 is fixedly installed on the top of the recovery box 7. The technical solution used The vacuum fan of the invention has been fully disclosed in the Chinese patent with the announcement number CN205240745U, so it will not be repeated in this article. The suction pipe 9 is fixedly installed at the suction end of the vacuum fan 8. The left end of the suction pipe 9 extends into the recovery pipe 6. The suction pipe 9 is fixedly installed with a filter box 26. The filter box 26 is detachably installed with a filter screen 27. By using the filter box 26 and the filter screen 27, the foam raw material can be effectively filtered to prevent the foam raw material from causing damage to the vacuum fan. The exhaust pipe 10 is fixedly installed at the discharge end of the vacuum fan 8. The mechanism is arranged on the material box 3, the stirring mechanism is used to stir the raw materials, the return mechanism is arranged on the bottom plate 1, and the return mechanism is used to return the collected raw materials to the material box 3. A U-shaped support plate 23 is fixedly installed on the top of the bottom plate 1, and a plurality of evenly distributed storage boxes 24 are fixedly installed on the top of the U-shaped support plate 23. The tops of the plurality of storage boxes 24 are fixedly installed with distribution pipes 25, and the tops of the plurality of distribution pipes 25 are fixedly connected to the transfer box 5. Through the above arrangement, it is convenient to feed a plurality of foam production machines, improve production efficiency, and reduce production investment.

[0037] Specifically, the return mechanism includes a water pump 11, a liquid inlet pipe 12, a first feed pipe 13, a first feed valve 14 and a return pipe 15. The water pump 11 is fixedly installed on the top of the base plate 1, the liquid inlet pipe 12 is fixedly installed on the input end of the water pump 11, and one end of the liquid inlet pipe 12 away from the water pump 11 extends into the recovery box 7, the first feed pipe 13 is fixedly installed on the top of the material box 3, the first feed valve 14 is fixedly installed on the first feed pipe 13, and the return pipe 15 is fixedly installed on the first feed pipe 13, and one end of the return pipe 15 away from the first feed pipe 13 is fixedly connected to the output end of the water pump 11.

[0038] Specifically, the bottom of the material box 3 is a downwardly convex arc surface, and a scraper rod 20 is fixedly installed on the stirring shaft 18. The scraper rod 20 is in sliding contact with the inner wall of the material box 3. Through the above arrangement, the foam raw material can be prevented from adhering to the inner wall of the material box 3, and it is beneficial for the foam raw material to flow out of the material box 3. A thermal insulation layer 22 is fixedly installed on the outer wall of the material box 3. The thermal insulation layer 22 can effectively reduce the heat loss of the raw materials in the material box and improve the quality of the foam raw materials. An installation groove is opened on the arc-shaped inner wall of the material box 3, and an arc-shaped heating plate 21 is fixedly installed in the installation groove. The arc-shaped heating plate 21 is in sliding contact with the scraper rod 20. The raw material can be heated by the arc-shaped heating plate 21 to prevent the raw material from gradually cooling down, thereby further improving the production quality of the foam.

[0039] Specifically, the stirring mechanism includes a mounting frame 16, a motor 17, a stirring shaft 18 and a plurality of stirring rods 19. The mounting frame 16 is fixedly mounted on the top of the material box 3, the motor 17 is fixedly mounted on the mounting frame 16, the motor 17 is used to drive the stirring shaft 18 to rotate, the stirring shaft 18 is fixedly mounted on the output shaft end of the motor 17, the bottom end of the stirring shaft 18 extends into the material box 3, and the plurality of stirring rods 19 are fixedly mounted on the stirring shaft 18 and are evenly distributed.

[0040] In this example, a control switch is fixedly installed at a suitable position on the material box 3 next to the fire material box 3. The vacuum fan 8, water pump 11, motor 17, arc heating plate 21 and the control switch are electrically connected to the power line in sequence through wires. The vacuum fan 8, water pump 11, motor 17 and arc heating plate 21 can be turned on and off by the control switch.

[0041] Through the above structure, the utility model provides a negative pressure feeding device for foam production, which can stir and heat the raw materials in the material box 3, avoid the raw materials from standing for a long time and separating and stratifying, ensure the uniform texture of the raw materials, and improve the production quality of the foam. It can also use the water pump 11 to extract the raw materials collected in the recovery box 7, and transport them back to the material box 3 through the return pipe 15, so as to avoid the foam raw materials from causing damage to the vacuum fan 8 and reduce the loss of raw materials. When used specifically, the motor 17 and the arc heating plate 21 are controlled to operate, and the motor 17 drives the stirring shaft 18, multiple stirring rods 19 and the scraper rod 20 to rotate, so as to stir and heat the foam raw materials in the material box 3, and control the vacuum fan 8 to operate, so that the vacuum fan 8 extracts the air in the recovery pipe 6, the transfer box 5 and the conveying pipe 4 to form a negative pressure feeding device. The foam raw materials in the material box 3 are sucked by pressure, and the foam raw materials enter the transfer box 5 through the conveying pipe 4 and enter the multiple distribution pipes 25 respectively, so as to supply multiple foam production machines. When necessary, the power of the vacuum fan 8 can be increased to increase the rate of extracting the raw materials in the material box 3 so that the multiple distribution pipes 25 can obtain sufficient foam raw materials. When the suction force is too large, the excess foam raw materials enter the recovery box 7 through the recovery pipe 6. By utilizing the combined effect of the filter box 26 and the filter net 27, the foam raw materials can be effectively prevented from causing damage to the vacuum fan. The volume of the foam raw materials collected in the material box 3 can be grasped in real time through the liquid level meter 28, and the operation of the water pump 11 can be controlled. The water pump 11 extracts the foam raw materials in the recovery box 7 and conveys them back to the material box 3 under pressure, thereby reducing the loss of foam raw material production.

[0042] The above is a detailed introduction to a negative pressure feeding device for foam production provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A negative pressure feeding device for foam production, characterized in that: The invention comprises a bottom plate (1), a support pipe (2), a material box (3), a conveying pipe (4), a transfer box (5), a recovery pipe (6), a recovery box (7), a vacuum fan (8), an air suction pipe (9), an exhaust pipe (10), a stirring mechanism and a material return mechanism, wherein the support pipe (2) is fixedly mounted on the top of the bottom plate (1), the material box (3) is fixedly mounted on the top of the support pipe (2), a through hole is provided on the support pipe (2), the conveying pipe (4) is fixedly mounted on the bottom of the material box (3), the transfer box (5) is fixedly mounted on one end of the conveying pipe (4) away from the material box (3), the recovery pipe (6) is fixedly mounted on the right side of the transfer box (5), and the recovery box (7) is fixedly mounted At the top of the bottom plate (1) and on the right side of the transfer box (5), the recovery pipe (6) extends from one end of the transfer box (5) to the recovery box (7), the vacuum fan (8) is fixedly installed on the top of the recovery box (7), the suction pipe (9) is fixedly installed at the suction end of the vacuum fan (8), the left end of the suction pipe (9) extends into the recovery pipe (6), the exhaust pipe (10) is fixedly installed at the discharge end of the vacuum fan (8), the stirring mechanism is arranged on the material box (3), the stirring mechanism is used to stir the raw materials, and the return material mechanism is arranged on the bottom plate (1), the return material mechanism is used to return the collected raw materials to the material box (3).

2. A negative pressure feeding device for foam production according to claim 1, characterized in that: The return mechanism comprises a water pump (11), a liquid inlet pipe (12), a first feed pipe (13), a first feed valve (14) and a return pipe (15); the water pump (11) is fixedly mounted on the top of the base plate (1); the liquid inlet pipe (12) is fixedly mounted on the input end of the water pump (11); one end of the liquid inlet pipe (12) away from the water pump (11) extends into the recovery box (7); the first feed pipe (13) is fixedly mounted on the top of the material box (3); the first feed valve (14) is fixedly mounted on the first feed pipe (13); the return pipe (15) is fixedly mounted on the first feed pipe (13); one end of the return pipe (15) away from the first feed pipe (13) is fixedly connected to the output end of the water pump (11).

3. A negative pressure feeding device for foam production according to claim 2, characterized in that: The stirring mechanism comprises a mounting frame (16), a motor (17), a stirring shaft (18) and a plurality of stirring rods (19); the mounting frame (16) is fixedly mounted on the top of the material box (3); the motor (17) is fixedly mounted on the mounting frame (16); the stirring shaft (18) is fixedly mounted on the output shaft end of the motor (17); the bottom end of the stirring shaft (18) extends into the material box (3); and the plurality of stirring rods (19) are fixedly mounted on the stirring shaft (18) and are evenly distributed.

4. A negative pressure feeding device for foam production according to claim 3, characterized in that: The bottom of the material box (3) is a downwardly convex arc surface, and a scraper rod (20) is fixedly mounted on the stirring shaft (18), and the scraper rod (20) is in sliding contact with the inner wall of the material box (3).

5. A negative pressure feeding device for foam production according to claim 4, characterized in that: An installation groove is provided on the arc-shaped inner wall of the material box (3), and an arc-shaped heating plate (21) is fixedly installed in the installation groove. The arc-shaped heating plate (21) is in sliding contact with the scraper rod (20).

6. A negative pressure feeding device for foam production according to claim 5, characterized in that: A heat-insulating layer (22) is fixedly mounted on the outer wall of the material box (3).

7. A negative pressure feeding device for foam production according to claim 1, characterized in that: A U-shaped support plate (23) is fixedly mounted on the top of the base plate (1), a plurality of evenly distributed material storage boxes (24) are fixedly mounted on the top of the U-shaped support plate (23), a plurality of material distribution pipes (25) are fixedly mounted on the tops of the plurality of material distribution pipes (25), and the top ends of the plurality of material distribution pipes (25) are fixedly connected to the transfer box (5).

8. A negative pressure feeding device for foam production according to claim 1, characterized in that: A filter box (26) is fixedly mounted on the air suction pipe (9), and a filter screen (27) is detachably mounted in the filter box (26).

9. A negative pressure feeding device for foam production according to claim 1, characterized in that: A liquid level meter (28) is fixedly mounted on the front side of the recovery box (7).

10. A negative pressure feeding device for foam production according to claim 1, characterized in that: A second feed pipe (29) is fixedly mounted on the top of the material box (3), and a second feed valve (30) is fixedly mounted on the second feed pipe (29).

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