A polymer material pump

Abstract

The present invention provides a polymer material pump, comprising a feed port and a discharge port, and also comprising a fixing ring fixedly mounted on a frame, wherein a rotating shaft is rotatably connected inside the fixing ring, and a sleeve is connected to one end of the rotating shaft, and the sleeve is provided with a plurality of channels which are independent of each other and open toward the fixing ring, and a plurality of through holes are provided on the outer surface of the sleeve, wherein the feed port and the discharge port correspond to through holes at different positions respectively, and each of the channels is connected to a plurality of the through holes, and a partition net is provided in all the through holes to block the polymer material from entering the channel, and the fixing ring is provided with a negative pressure chamber and a positive pressure chamber, and the present invention can ensure the airtightness of the positive pressure chamber and the negative pressure chamber, the friction force of the rotor rotation is small, the feeding is accurate, the discharging speed is fast, and the discharging position is accurate, thereby greatly improving the production efficiency and achieving good consistency of the laid polymer material.

Description

Technical Field

[0001] The invention relates to the technical field of diaper core production equipment, in particular to a polymer material pump. Background Art

[0002] When producing the core of diapers, it is necessary to lay polymer materials on the non-woven fabric according to a predetermined pattern. A polymer pump is used to lay the polymer materials. Invention patent: CN107298320B, Public Rights Announcement Date: 2018.11.20 discloses a polymer pump, wherein the stator is a solid structure, and a negative pressure tube and a positive pressure tube are respectively arranged on the stator parallel to its axial direction, the negative pressure tube is connected to a vacuum pump outside, and the positive pressure tube is connected to compressed air, and two partitions are arranged on the circumferential side of the stator and along its axial direction, and the two partitions cooperate with the inner wall of the inner tube and divide the inner cavity of the inner tube into a negative pressure cavity and a positive pressure cavity, and the partition cooperates with the inner tube to seal, and a high-pressure tube is also arranged on the stator along its axial direction, and the circumferential side of the stator is arranged along its axial direction. Three baffles are also provided axially to separate the positive pressure chamber into four chambers, including a medium pressure chamber and a high pressure chamber, the medium pressure chamber is close to the negative pressure chamber, the medium pressure chamber is not adjacent to the high pressure chamber, the medium pressure chamber is connected to the positive pressure pipe, and the high pressure chamber is connected to the high pressure pipe. This polymer pump has several problems: first, the air pressure of the high pressure pipe is diverted to a larger chamber, resulting in the need for a higher air pressure to eject all the polymer materials, which places a heavy load on the equipment; second, the positive pressure chamber and the negative pressure chamber are separated by a partition, and the rotor rotates relative to the partition, so the partition is easily worn, resulting in poor sealing effect between the positive pressure chamber and the negative pressure chamber; third, there is great friction between the partition and the inner cylinder, and a large driving force is required to drive the rotor to rotate. Summary of the invention

[0003] In response to the above problems, the present invention provides a polymer material pump, which can ensure the airtightness of the positive pressure chamber and the negative pressure chamber, has small friction when the rotor rotates, accurate feeding, fast discharging speed, and accurate discharging position, thereby greatly improving production efficiency and achieving good consistency of the laid polymer material.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A polymer material pump comprises a feed port and a discharge port, and also comprises a fixing ring fixedly mounted on a frame, wherein a rotating shaft is rotatably connected inside the fixing ring, and a sleeve is connected to one end of the rotating shaft, and the sleeve is provided with a plurality of channels which are independent of each other and open toward the fixing ring, and a plurality of through holes are provided on the outer surface of the sleeve, wherein the feed port and the discharge port correspond to through holes at different positions respectively, and each of the channels is connected with a plurality of the through holes, and a partition net is provided in all the through holes to block the polymer material from entering the channel, and the fixing ring is provided with a negative pressure chamber and a positive pressure chamber, and the end of the sleeve cooperates with the end of the fixing ring so that the negative pressure chamber and the positive pressure chamber are connected with different channels respectively, and the negative pressure chamber is connected with the corresponding through hole on the feed port through the corresponding channel, and the positive pressure chamber is connected with the corresponding through hole on the discharge port through the corresponding channel.

[0006] Preferably, the sleeve comprises an inner tube and an outer tube, the inner tube is provided with the passage, the through hole penetrates the inner tube and the outer tube at the same time, and the partition net is provided between the outer wall of the inner tube and the inner wall of the outer tube.

[0007] Preferably, the range of the negative pressure chamber extends from the feed port to near the discharge port and simultaneously covers a plurality of the channels, and the negative pressure chamber includes an arc-shaped first negative pressure chamber opening opened on the end face of the fixing ring, and a second negative pressure chamber opening opened on the side face of the fixing ring and connected to the first negative pressure chamber opening, and a cover body is provided on the side face of the fixing ring to cover the second negative pressure chamber opening.

[0008] Preferably, the range of the positive pressure chamber corresponds to one of the channels.

[0009] Preferably, the positive pressure chamber includes a first positive pressure chamber opening opened on the end surface of the fixing ring, and a second positive pressure chamber opening opened on the side surface of the fixing ring and connected to the first positive pressure chamber opening.

[0010] Preferably, a bearing seat is fixedly mounted on one end of the fixing ring, and the rotating shaft is mounted on the bearing seat via two or more bearings.

[0011] Preferably, the positive pressure chamber is connected to the corresponding through hole on the discharge port through one of the corresponding channels, and the aperture of the positive pressure chamber is slightly larger than the tube diameter of the channel.

[0012] Beneficial effects of the present invention:

[0013] 1. Multiple independent channels are provided on the inner cylinder to ensure the independence of the positive pressure chamber and the negative pressure chamber, and to ensure the airtightness of the positive pressure chamber and the negative pressure chamber;

[0014] 2. The friction of the rotor rotation is small, reducing the equipment load;

[0015] 3. The positive pressure chamber is connected to the corresponding through hole on the discharge port through one of the channels. The pressure in the positive pressure chamber is high, and the polymer material in the through hole can be easily blown away;

[0016] 4. Accurate feeding, fast discharging speed and accurate discharging position can greatly improve production efficiency and ensure good consistency of laid polymer materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a stereogram of the present invention;

[0018] Figure 2 It is an exploded schematic diagram of the present invention;

[0019] Figure 3 It is a front view of the present invention;

[0020] Figure 4 It is a MM cross-sectional view of the present invention;

[0021] Figure 5 yes Figure 4 A magnified image of point A;

[0022] Figure 6 is a three-dimensional view of the fixing ring 3;

[0023] Figure 7 It is a three-dimensional view of the spacer ring 13. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figures 1 to 7As shown, a polymer material pump described in the present invention includes a feed port 1 and a discharge port 2. The polymer material enters from the feed port 1 and exits from the discharge port 2. It also includes a fixed ring 3 fixedly mounted on a frame. A rotating shaft 4 is rotatably connected inside the fixed ring 3. A sleeve 5 is fixedly connected to one end of the rotating shaft 4. When the rotating shaft 4 rotates, the sleeve 5 is driven to rotate together. A synchronous wheel 6 is fixedly connected to the other end of the rotating shaft 4. The driving mechanism drives the rotating shaft 4 to rotate through the synchronous wheel 6. The sleeve 5 is provided with a plurality of channels 7 that are independent of each other and open toward the fixed ring 3. One end of the channel 7 is open and the other end is closed. The length direction of the channel 7 is parallel to the axis of the sleeve 5. The outer surface of the sleeve 5 is provided with a plurality of through holes 8. The feed port 1 and the discharge port 2 correspond to through holes 8 at different positions respectively. Each of the channels 7 is connected to a plurality of the through holes 8. All the through holes 8 are provided with a partition 9 to block the polymer material from entering the channel 7. However, the polymer material can be stored in the through hole 8, that is, the partition 9 is arranged at the bottom of the through hole 8. The fixing ring 3 is provided with a negative pressure chamber 10 and a positive pressure chamber 11, and the end of the sleeve 5 cooperates with the end of the fixing ring 3. Specifically, the negative pressure chamber 10 includes an arc-shaped first negative pressure chamber opening 10a opened on the end face of the fixing ring 3, and a second negative pressure chamber opening 10b opened on the side of the fixing ring 3 and connected to the first negative pressure chamber opening 10a. A cover body 12 is provided on the side of the fixing ring 3 to cover the second negative pressure chamber opening 10b, and the cover body 12 is provided with a channel 7 connected to the negative pressure device, so that the negative pressure chamber 10 maintains negative pressure. The positive pressure chamber 11 includes a first positive pressure chamber opening 11a opened on the end face of the fixing ring 3, and a second positive pressure chamber opening 11b opened on the side of the fixing ring 3 and connected to the first positive pressure chamber opening 11a. The second positive pressure chamber opening 11b is connected to a positive pressure device, such as an air compressor. A spacer ring 13 is provided between the sleeve 5 and the fixed ring 3. The spacer ring 13 also has a first spacer ring hole 13a matching the first negative pressure cavity port 10a, and a second spacer ring hole 13b matching the first positive pressure cavity port 11a. After installation, the two sides of the spacer ring 13 press against the ends of the sleeve 5 and the ends of the fixed ring 3, thereby ensuring a tight connection between the sleeve 5 and the fixed ring 3.

[0026] The negative pressure chamber 10 and the positive pressure chamber 11 are respectively connected to different channels 7, and the negative pressure chamber 10 is connected to the corresponding through hole 8 on the feed port 1 through the corresponding channel 7, and the positive pressure chamber 11 is connected to the corresponding through hole 8 on the discharge port 2 through the corresponding channel 7, that is, when the polymer material enters the feed port 1, that is, passes through the through hole 8 corresponding to the negative pressure chamber 10, the polymer material is adsorbed in the through hole 8, and as the sleeve 5 rotates, when the through hole 8 adsorbed with the polymer material is transferred to the positive pressure chamber 11, the polymer material is blown away from the through hole 8.

[0027] Specifically, the sleeve 5 includes an inner cylinder 51 and an outer cylinder 52, the inner cylinder 51 is provided with the channel 7, the through hole 8 penetrates the inner cylinder 51 and the outer cylinder 52 at the same time, and the partition net 9 is provided between the outer wall of the inner cylinder 51 and the inner wall of the outer cylinder 52. During assembly, the channel 7 is firstly opened on the inner cylinder 51, and the through hole 8 is opened on the outer cylinder 52 and the inner cylinder 51, the partition net 9 is put on the outside of the inner cylinder 51, and then the outer cylinder 52 is put on the outside of the inner cylinder 51, so that the through holes 8 on the inner cylinder 51 and the outer cylinder 52 are aligned and fixed.

[0028] Specifically, the range of the negative pressure chamber 10 extends from the feed port 1 to near the discharge port 2 and covers multiple channels 7 at the same time, because after the polymer material enters the through hole 8, before being blown away from the through hole 8, the through hole 8 must always be connected to the negative pressure chamber 10, otherwise the polymer material may be separated from the through hole 8 due to gravity or centrifugal force. In order to make the polymer material distribution accurate and the discharge clean, the range of the positive pressure chamber 11 corresponds to one of the channels 7, and the positive pressure chamber 11 is connected to the corresponding through hole 8 on the discharge port 2 through one of the corresponding channels 7. The aperture of the positive pressure chamber 11 is slightly larger than the diameter of the channel 7, so that the polymer material in all the through holes 8 on the corresponding channel 7 can be blown away.

[0029] As a preferred solution, a bearing seat 14 is fixedly installed at one end of the fixing ring 3, and the rotating shaft 4 is installed on the bearing seat 14 through more than two bearings 15, and a spacer sleeve 16 is provided between the two bearings 15 to limit the distance between the two bearings 15. This can reduce the friction between the rotating shaft 4 and the fixing ring 3 and ensure their concentricity.

[0030] It should be noted here that the feed port 1 and the discharge port 2 are on the surface of the sleeve 5 , wherein the feed port 1 is within the range of the through hole 8 connected to the negative pressure chamber 10 , and the discharge port 2 is within the range of the through hole 8 connected to the positive pressure chamber 11 .

[0031] When the present invention is working, the driving mechanism drives the rotating shaft 4 to rotate through the synchronous wheel 6, and the rotating shaft 4 drives the sleeve 5 to rotate. The positions of the feed port 1 and the discharge port 2 remain unchanged, and the polymer material enters the corresponding through hole 8 from the feed port 1. At this time, the through hole 8 is connected to the negative pressure chamber 10, so the polymer material enters the through hole 8 and is blocked by the partition net 9 and cannot enter the channel 7. The sleeve 5 continues to rotate until the through hole 8 containing the polymer material rotates to the discharge port 2, that is, the corresponding channel 7 rotates to the positive pressure chamber 11, and the positive pressure chamber 11 blows the polymer material in the through hole 8 away through the channel 7 and comes out from the discharge port 2 to complete the cloth.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A polymer material pump, comprising a feed inlet and a discharge outlet, characterized in that: It also includes a fixed ring fixedly mounted on the frame, a rotating shaft rotatably connected to the fixed ring, a sleeve connected to one end of the rotating shaft, the sleeve is provided with a plurality of channels which are independent of each other and open toward the fixed ring, a plurality of through holes are provided on the outer surface of the sleeve, the feed port and the discharge port correspond to through holes at different positions respectively, each of the channels is connected to a plurality of the through holes, all of the through holes are provided with partitions to block polymer materials from entering the channels, the fixed ring is provided with a negative pressure chamber and a positive pressure chamber, the end of the sleeve cooperates with the end of the fixed ring so that the negative pressure chamber and the positive pressure chamber are respectively connected to different channels, the negative pressure chamber is connected to the corresponding through hole on the feed port through the corresponding channel, and the positive pressure chamber is connected to the corresponding through hole on the discharge port through the corresponding channel.

2. A polymer material pump according to claim 1, characterized in that: The sleeve includes an inner tube and an outer tube, the inner tube is provided with the passage, the through hole penetrates the inner tube and the outer tube at the same time, and the partition net is provided between the outer wall of the inner tube and the inner wall of the outer tube.

3. A polymer material pump according to claim 1, characterized in that: The range of the negative pressure chamber extends from the feed port to near the discharge port and covers a plurality of the channels at the same time. The negative pressure chamber includes an arc-shaped first negative pressure chamber opening opened on the end face of the fixed ring, and a second negative pressure chamber opening opened on the side face of the fixed ring and connected to the first negative pressure chamber opening. A cover body is provided on the side face of the fixed ring to cover the second negative pressure chamber opening.

4. A polymer material pump according to claim 1, characterized in that: The range of the positive pressure chamber corresponds to one of the channels.

5. A polymer material pump according to claim 1 or 4, characterized in that: The positive pressure cavity includes a first positive pressure cavity opening opened on the end surface of the fixing ring, and a second positive pressure cavity opening opened on the side surface of the fixing ring and connected to the first positive pressure cavity opening.

6. A polymer material pump according to claim 1, characterized in that: A bearing seat is fixedly mounted on one end of the fixing ring, and the rotating shaft is mounted on the bearing seat via more than two bearings.

7. A polymer material pump according to claim 1, characterized in that: The positive pressure chamber is connected with the corresponding through hole on the discharge port only through one of the corresponding channels, and the aperture of the positive pressure chamber is slightly larger than the tube diameter of the channel.

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