A high-uniformity foaming apparatus and its application in sponge production

Abstract

The application relates to the technical field of sponge foaming, in particular to high-uniformity foaming equipment and application thereof in sponge production, which comprises a support frame, a receiving plate and a fixing plate fixed on the support frame, symmetrically-installed conveying rollers rotatably installed on the support frame, and a conveying belt sleeved on the conveying rollers; a conveying cylinder is fixed on the receiving plate, a pumping nozzle is fixed at the bottom of the conveying cylinder; a buffer pressure-increasing mechanism and a constant-pressure pumping mechanism are arranged in the conveying cylinder and cooperate with each other; a scraping mechanism is arranged on the fixing plate, the scraping mechanism comprises two symmetrically-arranged scraping plates, the scraping mechanism is used for driving the scraping plates to move in the horizontal direction in a bidirectional mode and performing a paving action on the mixed liquid on the conveying belt, through cooperation of the buffer pressure-increasing mechanism and the constant-pressure pumping mechanism, the mixed liquid can be discharged through the pumping nozzle by constant pressure when the pressure in the conveying cylinder reaches a set threshold value, so that the subsequent foaming uniformity is ensured.

Description

Technical Field

[0001] This invention relates to the field of sponge foaming technology, specifically a high-uniformity foaming device and its application in sponge production. Background Technology

[0002] The production process of sponges varies depending on the type of material. They are mainly divided into natural sponges (marine organisms) and artificial sponges. For artificial sponges, foaming is one of the important steps in sponge production.

[0003] The principle of foaming is to expand and solidify liquid raw materials through chemical reaction to form a porous structure. When sponges are freely foamed, the raw materials expand freely in an open or semi-open environment to form a continuous sponge block. In this process, the uniformity of foaming directly determines the pore structure, density distribution and mechanical properties of the sponge.

[0004] Existing foaming equipment typically delivers the mixture directly to the foaming area through pipelines and then spreads it by natural flow. Since the delivered mixture is concentrated in one area, insufficient edge coverage is inevitable, resulting in uneven thickness of the foam.

[0005] To address this, multiple nozzles arranged in a fan shape can be used to pump the mixture. By linearly arranging and optimizing the angle of these multiple nozzles, a natural fan-shaped paving pattern can be achieved, resulting in a more uniform coverage area. However, during actual pumping, the linearly arranged nozzles will experience pressure gradient differences due to pipeline pressure attenuation (pressure at the end is lower than at the beginning), which will still lead to uneven nozzle flow and a paving thickness that is "thick in the middle and thin at both ends". Summary of the Invention

[0006] The purpose of this invention is to provide a high-uniformity foaming device and its application in sponge production, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A high-uniformity foaming device, comprising:

[0009] A support frame, and a receiving plate and a fixing plate fixed on the support frame, wherein symmetrically arranged conveyor rollers are rotatably mounted on the support frame, and a conveyor belt is sleeved on the conveyor rollers;

[0010] Also includes:

[0011] A conveying cylinder is fixed on the receiving plate, and a pumping nozzle is fixed at the bottom of the conveying cylinder;

[0012] The conveying cylinder is equipped with a buffer pressurization mechanism and a constant pressure pumping mechanism that cooperate with each other. The buffer pressurization mechanism can drive the constant pressure pumping mechanism to move when the pressure in the conveying cylinder changes, and open the communication channel between the pumping nozzle and the conveying cylinder when the pressure reaches a predetermined threshold.

[0013] The fixed plate is provided with a leveling mechanism, which includes two scrapers arranged symmetrically. The leveling mechanism is used to drive the scrapers to move bidirectionally in the horizontal direction and to perform a spreading action on the mixture on the conveyor belt.

[0014] As a further embodiment of the present invention: the buffer pressurization mechanism includes a guide column fixed in the delivery cylinder, a limit ring fixed at the end of the guide column, and a piston disc that abuts against the limit ring and slides axially on the guide column.

[0015] As a further embodiment of the present invention: the buffer pressurization mechanism further includes a push rod fixed to the side wall of the piston disc and passing through the delivery cylinder, a support plate fixed to the end of the push rod, and a first spring sleeved on the push rod, the two ends of the first spring respectively abutting against the piston disc and the inner wall of the delivery cylinder.

[0016] As a further embodiment of the present invention: the constant pressure pumping mechanism includes a guide rail formed at the bottom of the conveying cylinder, a sealing plate slidably installed in the guide rail, and a plurality of discharge holes and through holes equally distributed in the conveying cylinder and the sealing plate, wherein the discharge holes and the through holes are mutually connected and cooperate with each other.

[0017] It also includes an elastic component and an adjustment component disposed on the sealing plate and connected to the support plate, for switching the conduction state of the through hole through the sealing plate.

[0018] As a further embodiment of the present invention: the elastic component includes a support sleeve fixed on the support plate, a support rod axially sliding inside the support sleeve, a movable plate fixed to the end of the support rod, and a second spring sleeved on the support sleeve and the support rod, with the two ends of the second spring abutting against the movable plate and the support plate respectively.

[0019] As a further embodiment of the present invention: the adjusting assembly includes a guide groove formed on the sealing plate, and a support column fixed on the movable plate that slidably engages with the guide groove.

[0020] As a further embodiment of the present invention: the scraping mechanism includes a baffle fixed on the fixed plate, and the baffle has guide grooves arranged symmetrically;

[0021] It also includes a translation component and a lifting component disposed on the fixed plate and connected to the guide groove for guiding the scraper to move in the horizontal and vertical directions.

[0022] As a further embodiment of the present invention: the translation component includes a motor fixed on the fixed plate, a bidirectional lead screw connected to the output shaft of the motor is rotatably mounted on the fixed plate, and threaded sleeves arranged symmetrically are threadedly connected to the bidirectional lead screw.

[0023] As a further embodiment of the present invention: the lifting assembly includes a fixed rod fixed to the side wall of the threaded sleeve, a movable sleeve slidably attached to the fixed rod, a limiting post fixed to the side wall of the movable sleeve that slidably engages with the guide groove, and a connecting plate fixedly connected to the scraper on the limiting post.

[0024] The application of a high-uniformity foaming equipment in sponge production includes the aforementioned high-uniformity foaming equipment.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: The present application can ensure the uniformity of the mixture by uniform pumping pressure, so as to ensure the uniformity of subsequent foaming. Specifically, when the mixture is transported into the conveying cylinder, the conveying cylinder is in a blocked state by the cooperation of the buffer pressurization mechanism and the constant pressure pumping mechanism. When the pressure in the conveying cylinder reaches the set threshold, the conveying cylinder is opened by the buffer pressurization mechanism and the constant pressure pumping mechanism to ensure that the pumping pressure of each nozzle is consistent, and to avoid the problem of uneven flow of the pumping nozzle and uneven spreading thickness caused by the pressure gradient during pumping. When the mixture is spread on the conveyor belt, the mixture that has not yet been foamed is further scraped and leveled by the scraping mechanism to further ensure the uniformity of subsequent foaming.

[0026] By designing differences in the dimensions of the through holes, discharge holes, and the feeding path of the pump nozzle, and controlling the path size at the edge to be larger, the resistance of the mixture is smaller and the flow rate per unit time is higher, in order to compensate for the distance loss between the pump nozzle and the foaming area, thereby avoiding the problem of kinetic energy attenuation when spraying the mixture at the edge area, resulting in thinner paving thickness at the edge.

[0027] By cooperating with the support column and the guide groove, when the pressure inside the conveying cylinder reaches the set threshold, the sealing force provided by the support column to the sealing plate will be converted into a greater conducting force. Therefore, in the initial stage of the discharge hole opening, even if the pressure inside the conveying cylinder suddenly decreases due to the discharge of the mixed liquid, the force provided to the sealing plate by the conducting force can offset the reset force generated by the pressure reduction, so as to ensure that the sealing plate will not reset and avoid high-frequency oscillation caused by pressure fluctuations inside the conveying cylinder. Attached Figure Description

[0028] Figure 1This is a schematic diagram of one embodiment of a high-uniformity foaming equipment.

[0029] Figure 2 This is a structural schematic diagram from another angle in one embodiment of a high-uniformity foaming device.

[0030] Figure 3 This is a schematic diagram showing the connection relationship between a portion of the buffer pressurization mechanism, a portion of the constant pressure pumping mechanism, and a scraping mechanism in one embodiment of a high-uniformity foaming equipment.

[0031] Figure 4 This is a cross-sectional structural diagram of the conveying cylinder in one embodiment of a high-uniformity foaming device.

[0032] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0033] Figure 6 This is a schematic diagram of the structure of a portion of the constant pressure pumping mechanism in one embodiment of a high-uniformity foaming equipment.

[0034] Figure 7 This is an exploded structural diagram of the buffer pressurization mechanism and the constant pressure pumping mechanism in one embodiment of a high uniformity foaming device.

[0035] Figure 8 This is a schematic diagram of the leveling mechanism in one embodiment of a high-uniformity foaming device.

[0036] Figure 9 This is a schematic diagram of the structure of a partial leveling mechanism in one embodiment of a high-uniformity foaming equipment.

[0037] Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point B.

[0038] Figure 11 This is a schematic diagram of the structure of a partial leveling mechanism and scraper in one embodiment of a high-uniformity foaming equipment.

[0039] In the diagram: 1. Support frame; 2. Conveyor belt; 3. Receiving plate; 4. Fixing plate; 5. Conveying cylinder; 501. Discharge hole; 502. Guide rail; 6. Sealing plate; 601. Through hole; 602. First inclined groove; 603. Second inclined groove; 604. Straight groove; 7. Guide column; 701. Limiting ring; 8. Piston disc; 9. Push rod; 10. First spring; 11. Support plate; 12. Support sleeve; 13. Support rod ; 14. Movable plate; 15. Support column; 16. Second spring; 17. Feed pipe; 18. Pump nozzle; 19. Baffle; 1901. First transverse groove; 1902. Third inclined groove; 1903. Second transverse groove; 1904. Fourth inclined groove; 20. Motor; 21. Double-acting lead screw; 22. Threaded sleeve; 23. Fixed rod; 24. Movable sleeve; 25. Limiting column; 26. Connecting plate; 27. Scraper. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0042] Please see Figures 1 to 11 In this embodiment of the invention, a high-uniformity foaming device includes:

[0043] A support frame 1, and a receiving plate 3 and a fixing plate 4 fixed on the support frame 1. A symmetrically arranged conveying roller is rotatably mounted on the support frame 1, and a conveyor belt 2 is sleeved on the conveying roller.

[0044] Also includes:

[0045] A conveying cylinder 5 is fixed on the receiving plate 3, and a pumping nozzle 18 is fixed at the bottom of the conveying cylinder 5;

[0046] The conveying cylinder 5 is equipped with a buffer pressurization mechanism and a constant pressure pumping mechanism that cooperate with each other. The buffer pressurization mechanism can drive the constant pressure pumping mechanism to move when the pressure in the conveying cylinder 5 changes, and open the communication channel between the pumping nozzle 18 and the conveying cylinder 5 when the pressure reaches a predetermined threshold.

[0047] The fixed plate 4 is provided with a leveling mechanism, which includes two scrapers 27 arranged symmetrically. The leveling mechanism is used to drive the scrapers 27 to move bidirectionally in the horizontal direction and to perform a spreading action on the mixture on the conveyor belt 2.

[0048] Specifically, the pumping nozzle 18 is composed of multiple fan-shaped nozzles. A feed pipe 17, connected to the conveying cylinder 5 and used for conveying the mixture, is installed on the receiving plate 3. Initially, under the action of the buffer boosting mechanism and the constant pressure pumping mechanism, the conveying cylinder 5 and the pumping nozzle 18 are in a blocked state. When it is necessary to pump the mixture required for foaming the sponge, the mixture can be conveyed into the conveying cylinder 5 through the feed pipe 17. As the pumping volume gradually increases, the pressure inside the conveying cylinder 5 gradually increases, driving the buffer boosting mechanism to move. The buffer boosting mechanism also drives the constant pressure pumping mechanism... When the pressure in the conveying cylinder 5 reaches the set value, the constant pressure pumping mechanism will control the conveying cylinder 5 to connect with the pumping nozzle 18, and each nozzle of the pumping nozzle 18 will be synchronously opened, and the pumped mixed liquid pressure will be consistent, thereby ensuring that the amount of mixed liquid dispersed on the conveyor belt 2 is relatively uniform. At the same time, under the action of the leveling mechanism, the two scrapers 27 are controlled to move towards each other or away from each other, so as to evenly spread the mixed liquid in some uneven areas on the conveyor belt 2, thereby ensuring that the foaming degree of the sponge is uniform in the subsequent foaming process.

[0049] Preferably, the connection between the conveying cylinder 5 and the pumping nozzle 18 is controlled only when the pressure inside the conveying cylinder 5 reaches the set value. This avoids the pressure gradient difference caused by the pressure decay from the initial pumping position to the end pumping position inside the conveying cylinder 5, which would lead to uneven flow rate and uneven paving thickness in the pumping nozzle 18. At the same time, the pressure can increase the spraying speed of the mixture, thereby flushing out the residue remaining in the pumping nozzle 18 and preventing the pumping nozzle 18 from becoming clogged.

[0050] Please see Figures 1-4 , Figure 7The buffer and pressurization mechanism includes a guide post 7 fixed inside the conveying cylinder 5. A limit ring 701 is fixed at the end of the guide post 7. A piston disc 8 that abuts against the limit ring 701 slides axially on the guide post 7. The buffer and pressurization mechanism also includes a push rod 9 fixed to the side wall of the piston disc 8 and passing through the conveying cylinder 5. A support plate 11 is fixed at the end of the push rod 9. A first spring 10 is sleeved on the push rod 9. The two ends of the first spring 10 abut against the piston disc 8 and the inner wall of the conveying cylinder 5, respectively.

[0051] Please see Figure 4 In detail, in the initial state, the delivery cylinder 5 is not filled with the mixture, the first spring 10 is in a compressed state, so that the piston disc 8 is located at the end of its stroke facing the limiting ring 701 and abuts against the limiting ring 701, so as to minimize the distance between the support plate 11 and the side wall of the delivery cylinder 5.

[0052] When it is necessary to pump the mixture, if the mixture is discharged directly through the feed pipe 17, the pumping pressure of one of the pumping nozzles 18 closest to the feed pipe 17 will be the highest, and the pumping pressure of one of the pumping nozzles 18 farthest from the feed pipe 17 will be the lowest. This will cause the mixture to be thicker in the middle and thinner at both ends when it is pumped onto the conveyor belt 2. Therefore, under the action of the piston disc 8, the constant pressure pumping mechanism controls the conveying cylinder 5 to be in a blocked state.

[0053] When the feed pipe 17 delivers the mixture into the conveying cylinder 5, as the amount in the conveying cylinder 5 gradually increases, the pressure in the conveying cylinder 5 gradually increases and acts on the piston disc 8, causing the piston disc 8 to move away from the limit ring 701, so that the first spring 10 is compressed. The piston disc 8 will also drive the support plate 11 to move through the push rod 9, thereby driving the constant pressure pumping mechanism to move. When the pressure in the conveying cylinder 5 reaches the set threshold, the constant pressure pumping mechanism will control the conveying cylinder 5 to be connected with the pumping nozzle 18, thereby ensuring that the pressure of the mixture pumped by the pumping nozzle 18 is consistent, so as to ensure that the mixture pumped onto the conveyor belt 2 is in a uniform spreading state.

[0054] Please see Figures 1-7The constant pressure pumping mechanism includes a guide rail 502 formed at the bottom of the conveying cylinder 5, a sealing plate 6 slidably installed inside the guide rail 502, and multiple discharge holes 501 and through holes 601 equidistantly distributed on the conveying cylinder 5 and the sealing plate 6, the discharge holes 501 and the through holes 601 communicating with each other; it also includes an elastic component and an adjusting component disposed on the sealing plate 6 and connected to the support plate 11, for switching the conduction state of the through holes 601 through the sealing plate 6. The elastic component includes a support sleeve 12 fixed on the support plate 11, a support rod 13 axially sliding inside the support sleeve 12, a movable plate 14 fixed at the end of the support rod 13, a second spring 16 sleeved on the support sleeve 12 and the support rod 13, the two ends of the second spring 16 abutting against the movable plate 14 and the support plate 11 respectively, and the adjusting component includes a guide groove formed on the sealing plate 6, and a support column 15 fixed on the movable plate 14 that slidably engages with the guide groove.

[0055] Please see Figure 4 , Figure 5 It should be noted that the guide groove can be divided into three sections: a first inclined groove 602, a second inclined groove 603, and a straight groove 604. Both ends of the second inclined groove 603 are connected to one end of the first inclined groove 602 or the straight groove 604. The first inclined groove 602 and the second inclined groove 603 form a V-shaped structure, and the inclination angle of the first inclined groove 602 is smaller than that of the second inclined groove 603. In the initial state, the piston disc 8 and the limiting ring 701 are in contact, minimizing the distance between the support plate 11 and the conveying cylinder 5, so that the support column 15 is located on the side of the first inclined groove 602 away from the second inclined groove 603. At the end of the stroke, the second spring 16 is in a compressed state, thereby providing a force to the support column 15 in the direction away from the support sleeve 12 through the movable plate 14. Under the action of the support column 15, a force is provided to the sealing plate 6 in the direction away from the first inclined groove 602 through the first inclined groove 602. Since the force in this direction is used to restrict the connection between the through hole 601 and the discharge hole 501, the force in this direction can be defined as a blocking force. Similarly, the force opposite to the blocking force is defined as a conducting force. Since the sealing plate 6 is located at the end of the stroke on one side of the guide rail 502, the position of the sealing plate 6 remains unchanged.

[0056] When the mixture enters the conveying cylinder 5 through the feeding pipe 17, the pressure inside the conveying cylinder 5 gradually increases as the mixture increases, thereby pushing the piston disc 8 to move away from the limiting ring 701. The piston disc 8 will drive the support plate 11 to move through the push rod 9, thereby driving the support sleeve 12 to move. The support sleeve 12 will drive the support column 15 to slide along the first inclined groove 602 through the support rod 13 and the movable plate 14. Under the guidance of the first inclined groove 602, the support column 15 moves towards the support sleeve 12 to compress the second spring 16. The sealing force provided by the support column 15 to the sealing plate 6 through the first inclined groove 602 gradually increases. Therefore, when the piston disc 8 moves away from the limiting ring 701, it needs to overcome the dual resistance of the first spring 10 and the second spring 16.

[0057] When the pressure inside the conveying cylinder 5 reaches the set threshold, the support column 15 just passes the first inclined groove 602 and enters the second inclined groove 603. Since the inclination direction of the second inclined groove 603 is opposite to that of the first inclined groove 602, the second spring 16 is released elastically, causing the support column 15 to tend to move away from the support sleeve 12, so as to convert the blocking force into a conducting force through the second inclined groove 603. The inclination angle of the second inclined groove 603 is greater than that of the first inclined groove 602. The conducting force provided to the sealing plate 6 by 5 will be greater than the sealing force. As a result, the sealing plate 6 will slide quickly along the length of the guide rail 502, causing the through hole 601 to move quickly to the position of communicating with the discharge hole 501. At this time, the mixture in the conveying cylinder 5 will enter the pumping nozzle 18 through the discharge hole 501 and the through hole 601, thereby realizing that the mixture is discharged onto the conveyor belt 2 through multiple nozzles of the pumping nozzle 18 at the same pressure, ensuring that the mixture placed on the conveyor belt 2 is spread more evenly.

[0058] Among them, the pump nozzle 18 has the largest tilt angle in the two edge areas, which means that the distance between the mixture and the conveyor belt 2 is the largest. This may cause some nozzles in the edge area to lose kinetic energy when spraying the mixture, resulting in a thinner edge paving thickness. The through hole 601 and the discharge hole 501 and the feeding path of the pump nozzle 18 correspond to each other, and all of them have the smallest size in the middle and gradually increase in size towards both sides. The small hole in the middle and the large hole at the edge open at the same time. Since the path size at the edge is larger, the resistance of the mixture is smaller and the flow rate is higher per unit time, thereby compensating for the distance loss between the pump nozzle 18 and the foaming area.

[0059] Preferably, when the support column 15 crosses the first inclined groove 602 and enters the second inclined groove 603, the sealing force provided by the support column 15 to the sealing plate 6 will be converted into a larger conducting force. Therefore, in the initial stage of the discharge hole 501 being open, even if the pressure in the conveying cylinder 5 decreases suddenly due to the discharge of the mixed liquid, the force provided by the conducting force to the sealing plate 6 can offset the reset force generated by the pressure reduction, so as to ensure that the sealing plate 6 will not reset and avoid high-frequency oscillation caused by pressure fluctuations in the conveying cylinder 5.

[0060] If the foaming thickness needs to be increased, it means that the pressure in the conveying cylinder 5 still needs to be increased. The support column 15 will enter the straight groove 604. Under the action of the straight groove 604, it can ensure that the support column 15 can slide freely. Thus, through the cooperation of the piston disc 8 and the first spring 10, it can play a certain buffering effect on the mixture in the conveying cylinder 5, preventing the problem of uneven pumping caused by pressure fluctuations. It can also avoid interference with the sealing plate 6, causing the sealing plate 6 to shift and resulting in changes in the conduction size.

[0061] Please see Figure 1 , Figure 2 , Figures 8-11 The scraping mechanism includes a baffle 19 fixed on the fixed plate 4, on which symmetrically arranged guide grooves are formed; it also includes a translation component and a lifting component disposed on the fixed plate 4 and connected to the guide grooves for guiding the scraper 27 to move in the horizontal and vertical directions. The translation component includes a motor 20 fixed on the fixed plate 4, and a bidirectional lead screw 21 rotatably mounted on the fixed plate 4 and connected to the output shaft of the motor 20. symmetrically arranged threaded sleeves 22 are threadedly connected to the bidirectional lead screw 21. The lifting component includes a fixed rod 23 fixed to the side wall of the threaded sleeve 22, and a movable sleeve 24 axially sliding on the fixed rod 23. A limiting post 25 that slides into the guide groove is fixed on the side wall of the movable sleeve 24, and a connecting plate 26 fixedly connected to the scraper 27 is fixed on the limiting post 25.

[0062] Furthermore, the guide groove can be divided into four sections: the first horizontal groove 1901, the third inclined groove 1902, the second horizontal groove 1903, and the fourth inclined groove 1904. The first horizontal groove 1901, the third inclined groove 1902, the second horizontal groove 1903, and the fourth inclined groove 1904 are connected to each other in sequence. In the initial state, under the action of the bidirectional screw 21, the distance between the two threaded sleeves 22 is minimized, so that the limiting post 25 is located at the connection position of the first horizontal groove 1901 and the fourth inclined groove 1904. At this time, the movable sleeve 24 is located at the end of the stroke away from the threaded sleeve 22, the distance between the two scrapers 27 is minimized, and it is located at the end of the stroke towards the conveyor belt 2. The distance between the scraper 27 and the conveyor belt 2 is the required paving thickness of the mixture.

[0063] Because the mixture itself has a certain fluidity, and the mixture sprayed by the pump nozzle 18 may have a certain overlapping area, this will cause the thickness of some mixtures to exceed the average range. To address this, the unfoamed mixture can be leveled by scraping with scraper 27. At this time, motor 20 works and drives the bidirectional lead screw 21 to rotate, thereby driving the two threaded sleeves 22 to move. The threaded sleeves 22 will also drive the fixed rod 23 to move, so as to control the limiting post 25 to slide along the first transverse groove 1901 through the movable sleeve 24. Under the action of scraper 27, the mixture placed on the conveyor belt 2 is leveled. Since the limiting post 25 and the guide groove have a guiding effect, it can be ensured that the threaded sleeve 22 moves along the length direction of the bidirectional lead screw 21 and will not rotate with the bidirectional lead screw 21.

[0064] When the limiting post 25 disengages from the first transverse trough 1901 and enters the third inclined trough 1902, it indicates that the scraper 27 has completed its leveling action on the mixture. The accumulated material generated during the scraping action of the scraper 27 is located on both sides of the conveyor belt 2, and the mixture's own fluidity adaptively compensates for further damage to the edge areas. At this time, the limiting post 25 will drive the movable sleeve 24 to slide axially along the fixed rod 23 and move towards the threaded sleeve 22, causing the scraper 27 to separate from the mixture. When the limiting post 25 moves to the position where the third inclined trough 1902 connects with the second transverse trough 1903, the distance between the movable sleeve 24 and the threaded sleeve 22 is at its minimum. The movable sleeve 24 and the fixed rod 23 are equipped with damping to ensure that the movable sleeve 24 will not slide due to gravity when it is not subjected to external force. At this time, the motor 20 controls the bidirectional lead screw 21 to reverse, so that the limiting post 25 slides along the second transverse groove 1903. When the limiting post 25 disengages from the second transverse groove 1903 and enters the fourth inclined groove 1904, the movable sleeve 24 moves away from the threaded sleeve 22 until the limiting post 25 returns to the connection position between the fourth inclined groove 1904 and the first transverse groove 1901. The two scrapers 27 are reset, and the above steps are repeated to achieve the effect of scraping the uneven area of ​​the mixture and compensating for the edge area of ​​the mixture.

[0065] The application of a high-uniformity foaming equipment in sponge production includes the aforementioned high-uniformity foaming equipment.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-uniformity foaming device, comprising: A support frame, and a receiving plate and a fixing plate fixed on the support frame, wherein symmetrically arranged conveyor rollers are rotatably mounted on the support frame, and a conveyor belt is sleeved on the conveyor rollers; Its characteristic is that it further includes: A conveying cylinder is fixed on the receiving plate, and a pumping nozzle is fixed at the bottom of the conveying cylinder; The conveying cylinder is equipped with a buffer pressurization mechanism and a constant pressure pumping mechanism that cooperate with each other. The buffer pressurization mechanism can drive the constant pressure pumping mechanism to move when the pressure in the conveying cylinder changes, and open the communication channel between the pumping nozzle and the conveying cylinder when the pressure reaches a predetermined threshold. The fixed plate is provided with a leveling mechanism, which includes two scrapers arranged symmetrically. The leveling mechanism is used to drive the scrapers to move bidirectionally in the horizontal direction and to perform a spreading action on the mixture on the conveyor belt. The buffer and pressurization mechanism includes a guide column fixed inside the delivery cylinder, a limit ring fixed at the end of the guide column, and a piston disc that slides axially on the guide column and abuts against the limit ring. The buffer and pressurization mechanism also includes a push rod fixed to the side wall of the piston disc and passing through the delivery cylinder. A support plate is fixed to the end of the push rod, and a first spring is sleeved on the push rod. The two ends of the first spring abut against the piston disc and the inner wall of the delivery cylinder, respectively. The constant pressure pumping mechanism includes a guide rail formed at the bottom of the conveying cylinder, a sealing plate slidably installed in the guide rail, and multiple discharge holes and through holes formed on the conveying cylinder and the sealing plate at equal intervals, wherein the discharge holes and through holes are mutually connected and cooperate with each other. It also includes an elastic component and an adjustment component disposed on the sealing plate and connected to the support plate, for switching the conduction state of the through hole through the sealing plate; The elastic component includes a support sleeve fixed to the support plate, a support rod axially sliding inside the support sleeve, a movable plate fixed to the end of the support rod, and a second spring sleeved on the support sleeve and the support rod, with the two ends of the second spring abutting against the movable plate and the support plate respectively. The adjustment assembly includes a guide groove formed on the sealing plate, and a support column fixed on the movable plate that slidably engages with the guide groove.

2. The high uniformity foaming equipment according to claim 1, characterized in that, The scraping mechanism includes a baffle fixed on the fixed plate, and the baffle has symmetrically arranged guide grooves. It also includes a translation component and a lifting component disposed on the fixed plate and connected to the guide groove for guiding the scraper to move in the horizontal and vertical directions.

3. The high uniformity foaming equipment according to claim 2, characterized in that, The translation component includes a motor fixed on the fixed plate, and a bidirectional lead screw connected to the output shaft of the motor is rotatably mounted on the fixed plate. symmetrically arranged threaded sleeves are threadedly connected to the bidirectional lead screw.

4. The high uniformity foaming equipment according to claim 3, characterized in that, The lifting assembly includes a fixed rod fixed to the side wall of the threaded sleeve, a movable sleeve that slides axially on the fixed rod, a limiting post that slides into the guide groove on the side wall of the movable sleeve, and a connecting plate that is fixedly connected to the scraper on the limiting post.

5. The application of a high-uniformity foaming equipment in sponge production, characterized in that, Includes the high uniformity foaming equipment as described in any one of claims 1-4.

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