Multi-path feeding mechanism of plastic mixing machine

Abstract

The utility model discloses a multi-path feeding mechanism of a plastic mixing machine, which relates to the field of plastic mixing processing and comprises a mixing machine, a cover plate arranged at the top of the mixing machine and a blanking pipe fixedly connected to the top of the cover plate, a blanking funnel is arranged in the mixing machine, and a gas conveying pipe is fixedly connected to the side wall of the mixing machine. An external air pump exhausts air through the air delivery pipe, so that negative pressure is generated in the discharging cavity, and therefore, residual raw materials in the discharging pipe can be pumped out. An external air pump can also blow air through an air conveying pipe, all residual raw materials in the discharging cavity are blown into the mixing cavity below through the discharging opening, and it is ensured that all the proportioned raw materials can enter the mixing cavity to be mixed. And the sliding plug capable of plugging the discharging opening is arranged below the discharging opening, so that the sliding plug can plug the discharging opening in a sliding manner when the air delivery pipe exhausts air, and the raw materials in the mixing cavity are prevented from being re-pumped into the discharging cavity.

Description

Technical Field

[0001] The utility model relates to the field of plastic mixing processing, in particular to a multi-channel feeding mechanism of a plastic mixer. Background Art

[0002] The plastic mixing process is a process of mixing one or several plastics with the required plastic additives in a certain ratio to prepare a compound suitable for processing. Therefore, in the plastic mixing operation, a variety of raw materials are often required to be introduced into the plastic machine.

[0003] Commonly used plastic mixers typically include multiple feed pipes for conveying a variety of raw materials into the mixer. However, during feed, some raw materials tend to stick to the inner wall of the feed pipe, especially when mixed with high amounts of water, which increases their stickiness. Furthermore, some raw materials also exhibit increased stickiness on their particle surfaces at high temperatures.

[0004] Since various raw materials need to be prepared in advance according to a certain ratio before plastic mixing, there will be residual raw materials in the discharge pipe, which will easily lead to a decline in the process level of plastic mixing and a decline in the quality of the final mixed material. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a multi-channel feeding mechanism for a plastic mixer to solve the technical problem in the prior art that raw materials are easily left in the feed pipe, resulting in a decrease in the quality of the final mixed material.

[0006] Based on the above purpose, the utility model provides a multi-way feeding mechanism of a plastic mixer, comprising a mixer for mixing plastics and a cover plate provided on the top of the mixer, characterized in that the multi-way feeding mechanism further comprises:

[0007] A feed pipe fixedly connected to the top of the cover plate, wherein the feed pipe is provided in plurality;

[0008] A feeding funnel is provided in the mixer, the feeding funnel divides the inner cavity of the mixer into a mixing cavity below and a feeding cavity above, and a feeding port is provided at the bottom of the feeding funnel to connect the feeding cavity and the mixing cavity;

[0009] An air delivery pipe is fixedly connected to the side wall of the mixer, the outer end of the air delivery pipe is connected to the air pump, and the inner end of the air delivery pipe is communicated with the discharge cavity, and the lower end of the discharge pipe is also communicated with the discharge cavity.

[0010] Furthermore, a mixing motor is provided on the cover plate, and a rotating roller is fixedly connected to the output shaft of the mixing motor. The rotating roller passes through the feeding port of the rotating roller and is located at the center of the mixing chamber and the feeding chamber above.

[0011] Furthermore, a sliding plug capable of plugging the discharge port is provided below the discharge port, and the sliding plug is slidably connected to the rotating roller through a rotating roller groove at the center of the sliding plug.

[0012] Furthermore, a connecting ear is fixedly connected to the bottom of the sliding plug, a sliding rod is fixedly connected to the lower side wall of the discharge funnel, the connecting ear is slidably connected to the sliding rod, and a baffle is fixedly connected to the bottom of the sliding rod.

[0013] Furthermore, a discharge port is provided at the bottom of the mixer, and the discharge port is communicated with the mixing chamber.

[0014] Furthermore, a filter is provided at the connection between the inner end of the gas pipe and the discharge funnel.

[0015] The advantages of the present invention are: 1. A discharge funnel is arranged in the mixer to divide the inner cavity of the mixer into a mixing chamber at the bottom and a discharge cavity at the top. Multiple discharge pipes are directly connected to the discharge cavity. An air pipe is also connected to the discharge cavity. An external air pump draws air through the air pipe to generate negative pressure in the discharge cavity, thereby being able to draw out the residual raw materials in the discharge pipe.

[0016] 2. The external air pump can also blow air through the air pipe to blow all the residual raw materials in the discharge chamber into the mixing chamber below through the discharge port, ensuring that all the well-proportioned raw materials can enter the mixing chamber for mixing.

[0017] 3. A sliding plug is provided below the discharge port to plug the discharge port. When the gas pipe is evacuated, the sliding plug can slide up to plug the discharge port to prevent the raw materials in the mixing chamber from being re-pumped into the discharge chamber.

[0018] 4. A filter is provided at the connection between the inner end of the gas pipe and the discharge funnel to prevent part of the raw materials from being sucked away when the gas pipe is evacuated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structural principle of the utility model.

[0021] Figure 2 It is a front view of the device of the present utility model.

[0022] Figure 3 It is a schematic diagram of the internal structure of the device of the present utility model.

[0023] Figure 4 It is a structural schematic diagram of the sliding plug part in the device of the utility model.

[0024] Figure 5 for Figure 3 Enlarged view of part A.

[0025] Marked in the figure are: 101, mixer, 102, cover plate, 103, discharge pipe, 104, mixing motor, 105, air pipe, 106, discharge port, 107, mixing chamber, 108, discharge chamber, 109, discharge funnel, 110, discharge port, 111, sliding plug, 112, connecting ear, 113, sliding rod, 114, baffle, 115, rotating roller groove, 116, rotating roller, 117, filter screen.

[0026] Specific implementation and principle

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the usual meanings understood by people with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar words used in this utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0029] The first aspect of the present invention is as follows Figure 1 、 Figure 2 and Figure 3 As shown, the plastic mixer in the present invention is similar to a conventional plastic mixer, with the main difference being that a feed hopper 109 is provided inside the mixer 101 in the present embodiment. The feed hopper 109 is fixedly connected to the inner wall of the mixer 101 and divides the inner cavity of the mixer 101 into a mixing cavity 107 below and a feed hopper 108 above. A feed port 110 is provided at the bottom of the feed hopper 109, connecting the feed hopper 108 and the mixing cavity 107. Furthermore, a plurality of feed pipes 103 are provided on the cover plate 102 at the top of the mixer 101 in the present embodiment for feeding a variety of raw materials into the mixer 101. The lower ends of the feed pipes 103 are all connected to the feed hopper 108.

[0030] The key point is that an air pipe 105 is fixedly connected to the side wall of the mixer 101 , the outer end of the air pipe 105 is connected to the air pump, and the inner end of the air pipe 105 is communicated with the feeding chamber 108 .

[0031] Therefore, after the unloading is completed, in order to avoid residual raw materials in the unloading pipe 103, an external air pump can be used to draw air through the air pipe 105 to generate negative pressure in the unloading chamber 108. The negative pressure can draw out the residual raw materials in the unloading pipe 103, ensuring that all the raw materials with good proportions can enter the mixing chamber 107 for mixing.

[0032] Preferably, to prevent some of the raw materials from being drawn away during the air extraction process in the air delivery pipe 105, a filter 117 is provided at the junction of the inner end of the air delivery pipe 105 and the discharge funnel 109. The pore size of the filter 117 should be smaller than the size of the various raw material particles. Furthermore, the air delivery pipe 105 can be configured to be angled upward. In this configuration, even without the filter 117, a small amount of raw materials can be drawn into the air delivery pipe 105 during the extraction process. This small amount of raw materials in the air delivery pipe 105 can then be blown back into the mixing chamber 107 when an external air pump blows air through the air delivery pipe 105.

[0033] In addition, the external air pump can also blow air through the air pipe 105. After the external air pump first draws out the residual raw materials in the discharge pipe 103 through the air pipe 105, so that all the raw materials enter the discharge chamber 108, the external air pump is used to blow air (at this time, the outer end of the discharge pipe 103 needs to be sealed in advance). The wind pressure can blow all the residual raw materials in the discharge chamber 108 through the discharge port 110 into the mixing chamber 107 below, ensuring that all the raw materials with good proportions can enter the mixing chamber 107 for mixing.

[0034] On the other hand, Figure 3 、 Figure 4 and Figure 5 As shown, a sliding plug 111 capable of plugging the discharge port 110 is provided below the discharge port 110, and a plurality of connecting ears 112 are fixedly connected to the bottom of the sliding plug 111, and a plurality of sliding rods 113 are fixedly connected to the lower side wall of the discharge funnel 109 (the sliding rods 113 correspond one to one to the connecting ears 112), wherein each connecting ear 112 is slidably connected to the corresponding sliding rod 113, and a baffle 114 is fixedly connected to the bottom of the sliding rod 113.

[0035] Therefore, the sliding plug 111 can slide up and down freely on the sliding rod 113, that is, the sliding plug 111 is relatively slidably connected to the discharge funnel 109. Under normal conditions (when the external air pump is not pumping air through the air pipe 105), the sliding plug 111 will drop to the lowest point due to gravity, that is, the connecting ear 112 presses on the baffle 114 at the bottom of the sliding rod 113. At this time, the discharge port 110 is in a fully open state, so that various raw materials on the discharge funnel 109 (in the discharge chamber 108) can smoothly pass through the discharge port 110 into the mixing chamber 107.

[0036] When the external air pump is pumping air through the air pipe 105, a negative pressure is generated in the discharge chamber 108. The negative pressure can generate an upward force on the sliding plug 111, thereby sucking the sliding plug 111 upward, causing the sliding plug 111 to slide upward along the sliding rod 113, and finally the sliding plug 111 is inserted into the discharge port 110, and finally the discharge port 110 is completely blocked, which not only prevents the raw materials in the mixing chamber 107 from being re-drawn into the discharge chamber 108.

[0037] Moreover, since the discharge port 110 is blocked, the negative pressure in the discharge chamber 108 is further increased, so that the residual raw materials in the discharge pipe 103 can be better extracted.

[0038] When the external air pump blows air through the air pipe 105, there is no negative pressure in the discharge chamber 108, but high pressure instead. Therefore, under the action of high pressure and the gravity of the sliding plug 111, the sliding plug 111 will drop to the lowest point, that is, the connecting ear 112 is pressed on the baffle 114 at the bottom of the slide rod 113. At this time, the discharge port 110 is in a fully open state, so the wind pressure can blow all the remaining raw materials in the discharge chamber 108 through the discharge port 110 into the mixing chamber 107 below, ensuring that all the raw materials with good proportions can enter the mixing chamber 107 for mixing.

[0039] On the other hand, Figure 3 As shown, a mixing motor 104 is further provided on the cover plate 102 , and a rotating roller 116 is fixedly connected to the output shaft of the mixing motor 104 , passing through the discharge port 110 of the rotating roller 116 and located at the center of the mixing chamber 107 and the discharge chamber 108 above.

[0040] The sliding plug 111 is slidably connected to the rotating roller 116 through the rotating roller groove 115 at the center thereof. The rotating roller 116 is used to mix the various raw materials in the mixing chamber 107 with the stirring blade. DETAILED DESCRIPTION

[0041] Before mixing, the mixer 101 first discharges the materials through the discharge pipes 103. The raw materials first enter the discharge chamber 108 through the discharge pipes 103, and then enter the mixing chamber 107 through the discharge port 110 at the bottom of the discharge chamber 108 for mixing.

[0042] After all the raw materials have entered the mixing chamber 107, in order to avoid residual raw materials in the discharge pipe 103, it is necessary to start the external air pump to extract air. The external air pump extracts air through the air pipe 105 to generate negative pressure in the discharge chamber 108. The negative pressure can draw out the residual raw materials in the discharge pipe 103, ensuring that all the well-proportioned raw materials can enter the discharge chamber 108.

[0043] During this process, the negative pressure generates an upward force on the sliding plug 111, sucking the sliding plug 111 upward, causing the sliding plug 111 to slide upward along the sliding rod 113, and finally the sliding plug 111 is inserted into the discharge port 110, and finally the discharge port 110 is completely blocked.

[0044] After the above operations are completed, the external air pump blows air through the air pipe 105. Before the external air pump blows air, the outer end of the discharge pipe 103 is sealed. The external air pump blows air to generate wind pressure in the discharge chamber 108. The wind pressure can blow all the remaining raw materials in the discharge chamber 108 through the discharge port 110 into the mixing chamber 107 below, ensuring that all the well-proportioned raw materials can enter the mixing chamber 107 for mixing.

[0045] During blasting, under the action of high air pressure and the sliding plug 111's own gravity, the sliding plug 111 will drop to the lowest point, that is, the connecting ear 112 presses on the baffle 114 at the bottom of the slide rod 113. At this time, the discharge port 110 is in a fully open state. Finally, the mixing motor 104 is started to mix and stir the various raw materials in the mixing chamber 107. After the mixing and stirring is completed, the mixed materials are discharged through the discharge port 106.

[0046] Based on the above, the present invention uses an external air pump to create a negative pressure in the discharge chamber 108, thereby being able to extract the residual raw materials in the discharge pipe 103. The external air pump can also blow air through the air pipe 105, blowing all the residual raw materials in the discharge chamber 108 through the discharge port 110 into the mixing chamber 107 below, ensuring that all the well-proportioned raw materials can enter the mixing chamber 107 for mixing. Below the discharge port 110 is a sliding plug 111 that can plug the discharge port 110. When the air pipe 105 is evacuated, the sliding plug 111 can slide up to plug the discharge port 110, preventing the raw materials in the mixing chamber 107 from being pumped back into the discharge chamber 108. In addition, a filter 117 is provided at the connection between the inner end of the air pipe 105 and the discharge funnel 109 to prevent some of the raw materials from being drawn away when the air pipe 105 is evacuated.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other variations of different aspects of the present invention as above, which are not provided in detail for the sake of simplicity.

[0048] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A multi-channel feeding mechanism for a plastic mixer, comprising a mixer (101) for mixing plastics and a cover plate (102) arranged on the top of the mixer (101), characterized in that: The multi-channel feeding mechanism also includes: A feed pipe (103) fixedly connected to the top of the cover plate (102), wherein a plurality of feed pipes (103) are provided; A feeding funnel (109) is provided in the mixer (101), wherein the feeding funnel (109) divides the inner cavity of the mixer (101) into a lower mixing cavity (107) and an upper feeding cavity (108), and a feeding port (110) is provided at the bottom of the feeding funnel (109) for communicating with the feeding cavity (108) and the mixing cavity (107); An air delivery pipe (105) is fixedly connected to the side wall of the mixer (101), wherein the outer end of the air delivery pipe (105) is connected to the air pump, and the inner end of the air delivery pipe (105) is connected to the discharge cavity (108), and the lower end of the discharge pipe (103) is also connected to the discharge cavity (108).

2. The multi-channel feeding mechanism of a plastic mixer according to claim 1, characterized in that: A mixing motor (104) is also provided on the cover plate (102), and a rotating roller (116) is fixedly connected to the output shaft of the mixing motor (104). The rotating roller (116) passes through the discharge port (110) and is located at the center of the mixing chamber (107) and the upper discharge chamber (108).

3. The multi-channel feeding mechanism of a plastic mixer according to claim 2, characterized in that: A sliding plug (111) capable of plugging the discharge port (110) is provided below the discharge port (110), and the sliding plug (111) is slidably connected to the rotating roller (116) via a rotating roller groove (115) at the center thereof.

4. The multi-channel feeding mechanism of a plastic mixer according to claim 3, characterized in that: The bottom of the sliding plug (111) is fixedly connected to a connecting ear (112), the lower side wall of the discharge funnel (109) is fixedly connected to a sliding rod (113), the connecting ear (112) is slidably connected to the sliding rod (113), and the bottom of the sliding rod (113) is fixedly connected to a baffle (114).

5. The multi-channel feeding mechanism of a plastic mixer according to claim 1, characterized in that: The bottom of the mixer (101) is further provided with a discharge port (106), and the discharge port (106) is communicated with the mixing chamber (107).

6. The multi-channel feeding mechanism of a plastic mixer according to claim 1, characterized in that: A filter screen (117) is also provided at the connection between the inner end of the gas delivery pipe (105) and the discharge funnel (109).

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