High-pressure foaming machine capable of realizing uniform correlation mixing

Abstract

The utility model belongs to the technical field of manufacturing of plastic products, and particularly relates to a high-pressure foaming machine with uniform correlation mixing, which comprises a mixing tank and a spray head, the spray head is fixedly connected to the upper end of the mixing tank, and correlation spray pipes are fixedly connected below the left end and the right end in the mixing tank. And a feeding pipe is fixedly connected to one end, close to the mixing tank, of the lower part in the correlation spraying pipe. When the high-pressure foaming machine capable of achieving uniform correlation mixing is used, raw materials to be mixed are injected into the correlation spraying pipe from the feeding pipes at the left end and the right end and then sprayed into the mixing tank, after injection is completed, a telescopic piece is started, an output shaft of the telescopic piece stretches out to drive a piston to move towards the mixing tank, and meanwhile the raw materials attached to the inner side of the correlation spraying pipe are pushed into the mixing tank; an output shaft of a motor is started to rotate to drive a stirring shaft to rotate to mix the raw materials in the mixing tank, and after the raw materials are mixed, a spray head is started for foaming.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic product manufacturing, in particular to a high-pressure foaming machine with evenly mixed opposite shots. Background Art

[0002] A foaming machine, also known as a foam generator, is a device that makes foam from an aqueous solution of a certain concentration of a foaming agent. There are two necessary factors for the formation of foam, one is the foaming agent solution, and the other is air. Both are indispensable. Without the foaming agent solution, the liquid film surrounding the gas will not be formed, and there will be no bubbles. Without gas, bubbles cannot be formed even with only the foaming agent solution.

[0003] At present, the working method for high-pressure foaming machines includes: dividing the foaming machine solution into two components, and placing the two components in two material tanks respectively. The two components can be defined as white material and black material. The white material and the black material in the two material tanks flow into the low-pressure side inlet of the metering pump through the filter under the use of air pressure. The high-pressure material generated by the operation of the metering pump is switched to the mixing head (commonly known as the gun head) through the high-low pressure switching valve. In the mixing head, the black material and the white material are injected into the mixing chamber at a very high pressure and flow rate and quickly collide with each other to be evenly mixed, and then quickly flow out of the gun head into the mold cavity for foaming. In this way, the effect of full mixing of the two-component solution during the counter-shooting is also restricted, and the impact force during the counter-shooting will also cause a large amount of splashing of the mixed liquid. Once the splashed mixed liquid enters the counter-shooting nozzle, it will also be blocked.

[0004] For example, in a high-pressure foaming machine with uniform mixing of opposite shots disclosed in Chinese patent CN115351974A, the arc-shaped partition design further reduces the range of splashing, that is, the process of linear splashing caused by linear collision of splashing liquid occurs in the middle of the arc, so the probability of splashing liquid hitting the arc-shaped partition increases, thereby greatly reducing the probability of direct splashing to the opposite shot nozzle. At the same time, by setting a piston block to cooperate with the arc-shaped partition, it can also ensure that the mixing chamber and the arc-shaped partition can be cleaned in time, thereby avoiding the phenomenon of clogging of the mixing chamber due to foaming of residual liquid.

[0005] However, the high-pressure foaming agent cannot be fully mixed only by injection, thus affecting the quality of the mixed liquid.

[0006] For this reason, we urgently need to provide a high-pressure foaming machine that can fully mix and evenly mix. Utility Model Content

[0007] The utility model aims to provide a high-pressure foaming machine with uniform mixing by counter-injection, so as to solve the problem in the above background technology that the high-pressure foaming agent cannot be fully mixed only by counter-injection, thus affecting the quality of the mixed liquid.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-pressure foaming machine with uniform opposite-shooting mixing, comprising a mixing tank and a nozzle, the nozzle being fixedly connected to the upper end of the mixing tank, opposite-shooting nozzles being fixedly connected to the lower left and right ends of the interior of the mixing tank, a feed pipe being fixedly connected to the lower end of the opposite-shooting nozzle close to the mixing tank, a mixing mechanism being connected to the inner and outer ends of the mixing tank and the opposite-shooting nozzle, the mixing mechanism comprising a mixing unit and a cleaning unit, the mixing unit being arranged at the inner and outer ends of the mixing tank, and the cleaning unit being arranged at the inner and outer ends of the opposite-shooting nozzle.

[0009] The mixing unit comprises a motor, a stirring shaft and a scraper. The motor is fixedly connected to the middle position of the lower side of the mixing tank, the stirring shaft is fixedly connected to the upper end of the output shaft of the motor, and the scraper is fixedly connected to the outer end of the stirring shaft.

[0010] A further improvement is that the end of the scraper away from the stirring shaft is slidably connected to the inner side of the mixing tank. When the motor is started to drive the stirring shaft to stir the raw materials entering the mixing tank, the scraper will be driven to slide along the inner side of the mixing tank to scrape off the raw materials attached to the inner wall of the mixing tank to ensure that the two raw materials are fully mixed.

[0011] A further improvement is that the cleaning unit comprises a telescopic member and a piston, the telescopic member is fixedly connected to a side of the opposing nozzle away from the mixing tank, and the piston is fixedly connected to an output shaft end of the telescopic member.

[0012] A further improvement is that the outer side of the piston is slidably connected to the inner side of the opposite nozzle, so that the raw materials adhering to the inner wall of the opposite nozzle when flowing through the inside of the opposite nozzle can be pushed into the mixing tank by sliding the piston, thereby avoiding waste.

[0013] A further improvement is that the upper end of the feed pipe is slidably connected to the outer side of the piston. After the feeding is completed, the piston is driven to the position inside the opposite nozzle at the upper end of the feed pipe, and the upper end of the feed pipe can be closed, and the raw materials can no longer enter the mixing tank.

[0014] A further improvement is that the side of the piston away from the telescopic member is arc-shaped, and its curvature is the same as the curvature of the inner wall of the mixing tank. Therefore, after the end of the piston away from the telescopic member is moved to the inner wall of the mixing tank, the inner wall of the mixing tank can form a complete arc surface, ensuring smooth scraping of the scraper.

[0015] A further improvement is that a rubber pad is fixedly connected to the outer side of the piston, so that when the piston slides along the inner side of the opposite-shooting nozzle, the rubber pad on the outer side of the piston contacts the inner side of the opposite-shooting nozzle, so that the raw materials attached to the inner side of the opposite-shooting nozzle can be pushed into the mixing tank.

[0016] In summary, the present application discloses a high-pressure foaming machine with uniform mixing.

[0017] According to the technical solution, after the raw materials injected from the feed pipe box injection nozzle enter the mixing tank, the output shaft of the starter motor is rotated to drive the stirring shaft to rotate, so that the raw materials entering the mixing tank can be mixed, thereby ensuring that the raw materials are fully mixed.

[0018] Furthermore, by starting the telescopic member and moving its output shaft to drive the piston in the opposite-shooting nozzle to move, the raw materials attached to the inner wall of the opposite-shooting nozzle when flowing through the inside of the opposite-shooting nozzle can be slid toward the mixing tank and pushed into the mixing tank by the piston, thereby avoiding waste of moving away. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the mixing tank of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the opposing nozzle of the utility model;

[0022] Figure 4 It is a schematic diagram of the internal structure of the mixing tank of the utility model.

[0023] In the figure: 1, mixing tank; 2, nozzle; 3, opposite-shooting nozzle; 4, feeding pipe; 501, motor; 502, stirring shaft; 503, scraper; 601, telescopic part; 602, piston. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A high-pressure foaming machine with uniform back-injection mixing comprises a mixing tank 1 and a nozzle 2, wherein the nozzle 2 is fixedly connected to the upper end of the mixing tank 1, and back-injection nozzles 3 are fixedly connected to the lower left and right ends of the mixing tank 1, and a feed pipe 4 is fixedly connected to the lower end of the back-injection nozzle 3 near the mixing tank 1, and a mixing mechanism is connected to the inner and outer ends of the mixing tank 1 and the back-injection nozzle 3, and the mixing mechanism comprises a mixing unit and a cleaning unit, and the mixing unit is arranged at the inner and outer ends of the mixing tank 1, and the cleaning unit is arranged at the inner and outer ends of the back-injection nozzle 3.

[0028] The mixing unit includes a motor 501, a stirring shaft 502 and a scraper 503. The motor 501 is fixedly connected to the middle position of the lower side of the mixing tank 1, the stirring shaft 502 is fixedly connected to the upper end of the output shaft of the motor 501, and the scraper 503 is fixedly connected to the outer end of the stirring shaft 502. The end of the scraper 503 away from the stirring shaft 502 is slidably connected to the inner side of the mixing tank 1. When the motor 501 is started to drive the stirring shaft 502 to stir the raw materials entering the mixing tank 1, the scraper 503 will be driven to slide along the inner side of the mixing tank 1 to scrape off the raw materials attached to the inner wall of the mixing tank 1 to ensure that the two raw materials are fully mixed.

[0029] Embodiment 2:

[0030] On the basis of the first embodiment: the cleaning unit includes a telescopic member 601 and a piston 602, the telescopic member 601 is fixedly connected to the side of the opposite-shooting nozzle 3 away from the mixing tank 1, and the piston 602 is fixedly connected to the output shaft end of the telescopic member 601. The outer side of the piston 602 is slidably connected to the inner side of the opposite-shooting nozzle 3. Therefore, the raw material attached to the inner wall of the opposite-shooting nozzle 3 when flowing through the inside of the opposite-shooting nozzle 3 can be pushed into the mixing tank 1 by sliding the piston 602, thereby avoiding waste away from the mixing tank 1.

[0031] The upper end of the feed pipe 4 is slidably connected to the outer side of the piston 602. After the feeding is completed, the piston 602 is driven to the position inside the opposite nozzle 3 at the upper end of the feed pipe 4, and the upper end of the feed pipe 4 can be closed, and the raw materials can no longer enter the mixing tank 1.

[0032] The side of the piston 602 away from the telescopic member 601 is arc-shaped, and its curvature is the same as the curvature of the inner wall of the mixing tank 1. Therefore, after the end of the piston 602 away from the telescopic member 601 is moved to the inner wall of the mixing tank 1, the inner wall of the mixing tank 1 can form a complete arc surface, ensuring that the scraper 503 can scrape the material smoothly.

[0033] Embodiment three:

[0034] On the basis of the first embodiment: a rubber pad is fixedly connected to the outer side of the piston 602. Therefore, when the piston 602 slides along the inner side of the opposite-shooting nozzle 3, the rubber pad on the outer side of the piston 602 contacts the inner side of the opposite-shooting nozzle 3, so that the raw materials attached to the inner side of the opposite-shooting nozzle 3 can be pushed into the mixing tank 1.

[0035] Working principle: When in use, the raw materials to be mixed are respectively injected into the opposite-shooting nozzle 3 from the feeding pipes 4 at the left and right ends and then sprayed into the mixing tank 1. After the injection is completed, the telescopic member 601 is started and its output shaft is extended to drive the piston 602 to move toward the mixing tank 1. At the same time, the raw materials attached to the inner side of the opposite-shooting nozzle 3 are pushed into the mixing tank 1. Then the motor 501 is started and its output shaft rotates to drive the stirring shaft 502 to rotate to mix the raw materials in the mixing tank 1. After the raw materials are mixed, the nozzle 2 is started for foaming.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A high-pressure foaming machine for uniform mixing by opposite injection, comprising a mixing tank (1) and a nozzle (2), wherein the nozzle (2) is fixedly connected to the upper end of the mixing tank (1), characterized in that: The mixing tank (1) is fixedly connected to a counter-jet nozzle (3) at the lower left and right ends of the mixing tank (1), and a feed pipe (4) is fixedly connected to one end of the counter-jet nozzle (3) at the lower part of the mixing tank (1). The mixing tank (1) and the counter-jet nozzle (3) are connected to a mixing mechanism at both inner and outer ends. The mixing mechanism comprises a mixing unit and a cleaning unit. The mixing unit is arranged at both inner and outer ends of the mixing tank (1), and the cleaning unit is arranged at both inner and outer ends of the counter-jet nozzle (3). The mixing unit comprises a motor (501), a stirring shaft (502) and a scraper (503); the motor (501) is fixedly connected to the middle position of the lower side of the mixing tank (1); the stirring shaft (502) is fixedly connected to the upper end of the output shaft of the motor (501); and the scraper (503) is fixedly connected to the outer end of the stirring shaft (502).

2. A high pressure foaming machine with uniform mixing according to claim 1, characterized in that: One end of the outer side of the scraper (503) away from the stirring shaft (502) is slidably connected to the inner side of the mixing tank (1).

3. The high-pressure foaming machine with uniform mixing according to claim 1, characterized in that: The cleaning unit comprises a telescopic member (601) and a piston (602), wherein the telescopic member (601) is fixedly connected to a side of the opposing nozzle (3) away from the mixing tank (1), and the piston (602) is fixedly connected to an output shaft end of the telescopic member (601).

4. The high-pressure foaming machine with uniform mixing according to claim 3, characterized in that: The outer side of the piston (602) is slidably connected to the inner side of the opposing nozzle (3).

5. The high-pressure foaming machine with uniform mixing according to claim 3, characterized in that: The upper end of the feed pipe (4) is slidably connected to the outer side of the piston (602).

6. The high-pressure foaming machine with uniform mixing according to claim 3, characterized in that: The side of the piston (602) away from the telescopic member (601) is arc-shaped, and its curvature is the same as the curvature of the inner wall of the mixing tank (1).

7. The high-pressure foaming machine with uniform mixing according to claim 3, characterized in that: A rubber pad is fixedly connected to the outer side of the piston (602).

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