Negative pressure scrap recovery device for cutting disposable bed sheet

Abstract

The utility model relates to the technical field of bed sheet processing equipment, in particular to a negative pressure scrap recovery device for disposable bed sheet cutting, which comprises a recovery box body, the interior of the recovery box body is divided into a first negative pressure chamber positioned at the upper part and a second negative pressure chamber positioned at the lower part by a partition plate, and the negative pressure value of the second negative pressure chamber is greater than that of the first negative pressure chamber. A funnel penetrating through the partition plate is installed on the partition plate, and a first filter screen inclining towards the right lower portion is installed at the position, located above the funnel, of the first negative pressure chamber. The inside of the recycling box is divided into the upper negative pressure chamber and the lower negative pressure chamber, the negative pressure value of the second negative pressure chamber is larger than that of the first negative pressure chamber, an efficient scrap collecting path is formed through pressure gradient, and scraps are sucked into the recycling box through the first negative pressure chamber and then enter the second negative pressure chamber with lower pressure, so that the scraps are recycled. And chippings can be conveniently collected, and the situation that the chippings are attached to the surface of the first filter screen to block the first filter screen is avoided.

Description

Negative pressure debris collection device for disposable bed sheet cutting Technical Field

[0001] This utility model relates to the technical field of bed sheet processing equipment, specifically a negative pressure debris recovery device for disposable bed sheet cutting. Background Technology

[0002] The cutting and processing of disposable bed sheets generates a large amount of fine waste such as fiber scraps and fabric dust. If these scraps are not collected and disposed of in a timely manner, they will not only drift into the working environment, affecting the air quality of the workshop and threatening the health of the operators, but may also cause equipment malfunctions due to the accumulation of scraps, affecting the normal operation and service life of the cutting equipment.

[0003] Existing technologies often employ negative pressure recovery devices to collect debris generated during the cutting of disposable bed sheets. However, these devices only use a single negative pressure space design. During the process of adsorbing debris, the debris easily accumulates on the surface of the filter screen, causing blockage and reducing suction power. This necessitates frequent shutdowns for cleaning, severely impacting production continuity and increasing maintenance costs and labor burden.

[0004] In view of this, we propose a negative pressure debris recovery device for disposable bed sheet cutting. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a negative pressure debris recycling device for disposable bed sheet cutting.

[0006] The technical solution of this utility model is:

[0007] A negative pressure debris collection device for disposable bed sheet cutting includes a collection box. The inside of the collection box is divided by a partition into a first negative pressure chamber at the top and a second negative pressure chamber at the bottom, with the negative pressure value of the second negative pressure chamber being greater than that of the first negative pressure chamber. A funnel passing through the partition is installed on the partition. A first filter screen inclined to the lower right is installed above the funnel in the first negative pressure chamber. A cleaning mechanism for cleaning the lower surface of the first filter screen is installed inside the collection box. The second negative pressure chamber has a collection net box communicating with the bottom of the funnel. A collection component communicating with the first negative pressure chamber is installed on the left outer wall of the collection box. Two vacuum pumps, each equipped with a pressure gauge, are installed on the right outer wall of the collection box. The air inlets of the two vacuum pumps are respectively connected to the first and second negative pressure chambers. By dividing the recycling chamber into upper and lower negative pressure chambers, and making the negative pressure value of the second negative pressure chamber greater than that of the first negative pressure chamber, an efficient debris collection path is formed by utilizing the pressure gradient. Debris is sucked into the recycling chamber after passing through the first negative pressure chamber, and then enters the second negative pressure chamber with lower pressure. This facilitates the collection of debris and prevents debris from adhering to the surface of the first filter screen and clogging it.

[0008] As a preferred technical solution, the air inlet pipes installed on the two vacuum pump inlets are respectively connected to the upper right side of the first filter screen and the outside of the collection screen box. Positioning the pipes on the upper right side of the first filter screen ensures that the debris can be blocked by the first filter screen, while positioning them on the outside of the collection screen box facilitates the disassembly of the collection screen box and the collection of debris.

[0009] As a preferred technical solution, each of the two air inlet pipes is threadedly installed with a filter box at one end inside the recovery box. The filter box is equipped with filter cotton and a second filter screen to prevent fine debris from entering the vacuum pump.

[0010] As a preferred technical solution, the bottom of the funnel is connected to an insertion tube via a corrugated pipe, and a mesh box cover is hinged to the top of the collection mesh box. The insertion tube is inserted into the mesh box cover, and a sealing gasket is provided between the mesh box cover and the insertion tube, with the sealing gasket fixed to the mesh box cover. The bottom of the funnel is connected to the mesh box cover via the corrugated pipe and the insertion tube, and a sealing gasket is provided to ensure that debris falls smoothly into the collection mesh box, facilitate disassembly and cleaning, and prevent air leakage from affecting the negative pressure effect.

[0011] As a preferred technical solution, a door is hinged to the front outer wall of the recycling bin, and a support leg is fixedly installed at each of the four corners of the bottom of the recycling bin, with a caster wheel fixedly installed at the bottom of each support leg. The hinged door and caster wheel design facilitates maintenance and movement of the equipment, improves its flexibility of use, and is suitable for different working scenarios.

[0012] As a preferred technical solution, the cleaning mechanism includes a fixed plate fixed to the top of the recycling bin. A lead screw parallel to the first filter screen is rotatably mounted on the fixed plate. A movable block is threaded onto the lead screw. A cleaning brush is fixedly mounted on the movable block near the first filter screen. An adjusting motor with its output shaft coaxially fixed to the lead screw is mounted on the fixed plate. A guide rod passing through the movable block is fixedly mounted on the fixed plate. The lead screw-driven cleaning brush can automatically clean the first filter screen, preventing debris accumulation and clogging, ensuring continuous and efficient operation of the negative pressure system, and reducing manual intervention.

[0013] As a preferred technical solution, the collection assembly includes an outer cover communicating with the first negative pressure chamber, a flexible tube installed on the outer cover, and an absorption cover installed at the end of the flexible tube away from the outer cover. The adsorption position can be flexibly adjusted to adapt to the debris collection needs of different cutting equipment, improving the versatility of the device.

[0014] As a preferred technical solution, a horizontal plate is fixedly installed inside the outer cover, and several fan motors are fixedly installed on the horizontal plate. Each fan motor has a fan blade fixedly installed coaxially on its output shaft. When the fan blades rotate, they blow air into the collection box. The fan motors and fan blades inside the outer cover can accelerate airflow and enhance the debris suction capacity, making it particularly suitable for the efficient collection of lightweight debris.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention divides the recycling chamber into upper and lower negative pressure chambers, with the negative pressure value of the second negative pressure chamber being greater than that of the first negative pressure chamber. This pressure gradient creates an efficient debris collection path. Debris is drawn into the recycling chamber through the first negative pressure chamber and then enters the second negative pressure chamber, where the pressure is lower. This facilitates debris collection and prevents debris from adhering to the surface of the first filter screen and clogging it. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the recycling box in this utility model;

[0019] Figure 3 is an enlarged view of point A in Figure 2 of this utility model;

[0020] Figure 4 is a schematic diagram of the internal structure of the outer cover in this utility model;

[0021] Figure 5 is a schematic diagram of the internal structure of the filter box in this utility model.

[0022] The meanings of the labels in the diagram are as follows:

[0023] 1. Recycling box; 10. Box door; 11. First filter screen; 110. Cleaning brush; 111. Movable block; 112. Fixed plate; 113. Adjusting motor; 114. Lead screw; 115. Guide rod; 12. Funnel; 120. Insert tube; 121. Corrugated pipe; 13. Partition; 14. Collection box; 140. Box cover; 141. Sealing gasket; 2. Support leg; 3. Casters; 4. External cover; 40. Absorption cover; 41. Hose; 42. Horizontal plate; 43. Fan motor; 44. Fan blade; 5. Vacuum pump; 50. Mounting base; 51. Filter box; 510. Filter cotton; 511. Second filter screen; 52. Air inlet pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to the accompanying drawings. This utility model provides a technical solution:

[0026] As shown in Figures 1 and 2, the negative pressure debris collection device for disposable bed sheet cutting includes a collection box 1. The inside of the collection box 1 is divided by a partition 13 into a first negative pressure chamber located at the top and a second negative pressure chamber located at the bottom, and the negative pressure value of the second negative pressure chamber is greater than that of the first negative pressure chamber. A funnel 12 is installed on the partition 13 and passes through it. A first filter screen 11 is installed above the funnel 12 in the first negative pressure chamber and tilted to the right and downward. A cleaning mechanism is installed inside the collection box 1 at the first filter screen 11 to clean its lower surface. The second negative pressure chamber is provided with a collection net box 14 that communicates with the bottom of the funnel 12. A collection component that communicates with the first negative pressure chamber is installed on the left outer wall of the collection box 1. Two vacuum pumps 5, each with its own pressure gauge, are installed on the right outer wall of the collection box 1. The air inlets of the two vacuum pumps 5 are respectively connected to the first negative pressure chamber and the second negative pressure chamber. By dividing the interior of the recycling chamber 1 into upper and lower negative pressure chambers, and making the negative pressure value of the second negative pressure chamber greater than that of the first negative pressure chamber, an efficient debris collection path is formed by utilizing the pressure gradient. Debris is sucked into the recycling chamber 1 after passing through the first negative pressure chamber, and then enters the second negative pressure chamber with a lower pressure, which facilitates the collection of debris and avoids debris adhering to the surface of the first filter screen 11 and causing blockage of the first filter screen 11.

[0027] It should be added that the outer wall of the recycling box 1 is fixed with a mounting base 50 for installing the vacuum pump 5.

[0028] As shown in Figure 2, in a preferred embodiment, the air inlet pipes 52 installed on the air inlets of the two vacuum pumps 5 are respectively connected to the upper right side of the first filter screen 11 and the outside of the collection box 14. Positioning them on the upper right side of the first filter screen 11 ensures they can be blocked by the first filter screen 11, while positioning them on the outside of the collection box 14 facilitates the disassembly of the collection box 14 and the collection of debris.

[0029] As shown in Figures 2 and 4, in a preferred embodiment, each of the two air inlet pipes 52 has a filter box 51 threadedly installed at one end inside the recovery box 1. The filter box 51 contains filter cotton 510 and a second filter screen 511, which can prevent fine debris from entering the vacuum pump 5.

[0030] As shown in Figure 3, in a preferred embodiment, the bottom of the funnel 12 is connected to an insertion tube 120 via a corrugated pipe 121. A mesh box cover 140 is hinged to the top of the collecting mesh box 14. The insertion tube 120 is inserted into the mesh box cover 140, and a sealing gasket 141 is provided between the mesh box cover 140 and the insertion tube 120, fixing the sealing gasket 141 to the mesh box cover 140. The bottom of the funnel 12 is inserted into the mesh box cover 140 via the corrugated pipe 121 and the insertion tube 120, and the sealing gasket 141 is provided to ensure that debris falls smoothly into the collecting mesh box 14, facilitates disassembly and cleaning, and prevents air leakage from affecting the negative pressure effect.

[0031] As shown in Figure 1, in a preferred embodiment, a door 10 is hinged to the front outer wall of the recycling bin 1, and a support leg 2 is fixedly installed at each of the four corners of the bottom of the recycling bin 1. Each support leg 2 has a caster wheel 3 fixedly installed at its bottom. The hinged door 10 and the caster wheel 3 design make the equipment easy to maintain and move, improve its flexibility of use, and are suitable for different working scenarios.

[0032] As shown in Figure 2, in a preferred embodiment, the cleaning mechanism includes a fixed plate 112 fixed to the top of the recycling bin 1. A lead screw 114 parallel to the first filter screen 11 is rotatably mounted on the fixed plate 112. A movable block 111 is threaded onto the lead screw 114. A cleaning brush 110 is fixedly mounted on the movable block 111 near the first filter screen 11. An adjusting motor 113 with its output shaft coaxially fixed to the lead screw 114 is mounted on the fixed plate 112. A guide rod 115 passing through the movable block 111 is fixedly mounted on the fixed plate 112. The cleaning brush 110 driven by the lead screw 114 can automatically clean the first filter screen 11, preventing debris accumulation and clogging, ensuring continuous and efficient operation of the negative pressure system, and reducing manual intervention.

[0033] As shown in Figure 1, in a preferred embodiment, the collection component includes an outer cover 4 communicating with the first negative pressure chamber. A flexible tube 41 is installed on the outer cover 4, and an absorption cover 40 is installed at the end of the flexible tube 41 away from the outer cover 4. The adsorption position can be flexibly adjusted to adapt to the debris collection needs of different cutting equipment, thus improving the versatility of the device.

[0034] As shown in Figure 5, in a preferred embodiment, a horizontal plate 42 is fixedly installed inside the outer cover 4. Several fan motors 43 are fixedly installed on the horizontal plate 42, and a fan blade 44 is coaxially fixedly installed on the output shaft of each fan motor 43. When the fan blade 44 rotates, it blows air into the collection box 1. The fan motors 43 and fan blades 44 inside the outer cover 4 can accelerate airflow and enhance the ability to suck up debris, which is especially suitable for the efficient collection of lightweight debris.

[0035] In use, the negative pressure debris recovery device for disposable bed sheet cutting of this utility model operates with two vacuum pumps 5 on the right side starting simultaneously, making the negative pressure value of the lower second negative pressure chamber higher than that of the upper first negative pressure chamber, forming a stable pressure gradient. The absorption cover 40 of the left collection component is close to the cutting area, and the fan motor 43 inside the outer cover 4 accelerates the airflow. Under the negative pressure of the first negative pressure chamber, debris is carried by the airflow through the hose 41 into the first negative pressure chamber. The debris is intercepted by the inclined first filter screen 11, and the lead screw 114 of the cleaning mechanism drives the cleaning brush 110 to continuously clean the filter screen to prevent clogging. Due to the pressure difference, the debris enters the collection box 14 of the second negative pressure chamber through the funnel 12, while the air enters the vacuum pump 5 after being further purified through the filter box 51 via the air inlet pipe 52 on the outside of the collection box 14. When the collection box 14 is full, the front door 10 can be opened to remove it for cleaning, and the filter box 51 can also be disassembled and the filter element replaced periodically.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A negative pressure debris collection device for disposable bed sheet cutting, characterized in that: The recycling box (1) is divided into a first negative pressure chamber at the top and a second negative pressure chamber at the bottom by a partition (13). The negative pressure value of the second negative pressure chamber is greater than that of the first negative pressure chamber. A funnel (12) is installed on the partition (13) and passes through it. A first filter screen (11) is installed above the funnel (12) and tilted to the right and downward. A cleaning mechanism is installed inside the recycling box (1) to clean the lower surface of the first filter screen (11). The second negative pressure chamber is provided with a collection net box (14) that communicates with the bottom of the funnel (12). A collection component that communicates with the first negative pressure chamber is installed on the left outer wall of the recycling box (1). Two vacuum pumps (5) with pressure gauges are installed on the right outer wall of the recycling box (1). The air inlets of the two vacuum pumps (5) are respectively connected to the first negative pressure chamber and the second negative pressure chamber.

2. The negative pressure debris collection device for disposable bed sheet cutting as described in claim 1, characterized in that: The air inlet pipes (52) installed on the air inlets of the two vacuum pumps (5) are respectively connected to the upper right side of the first filter screen (11) and the outside of the collection box (14).

3. The negative pressure debris collection device for disposable bed sheet cutting as described in claim 2, characterized in that: Each of the two air inlet pipes (52) is located inside the recovery box (1) and has a filter box (51) threaded on one end. The filter box (51) contains filter cotton (510) and a second filter screen (511).

4. The negative pressure debris collection device for disposable bed sheet cutting as described in claim 3, characterized in that: The bottom of the funnel (12) is connected to an insertion tube (120) through a corrugated pipe (121). The top of the collection net box (14) is hinged with a net box cover (140). The insertion tube (120) is inserted into the net box cover (140). A sealing gasket (141) is provided between the net box cover (140) and the insertion tube (120). The sealing gasket (141) is fixed to the net box cover (140).

5. The negative pressure debris collection device for disposable bed sheet cutting as described in claim 4, characterized in that: The recycling bin (1) has a door (10) hinged to the outer wall of the front side. Each of the four corners of the bottom of the recycling bin (1) has a support leg (2) fixedly installed, and each support leg (2) has a caster wheel (3) fixedly installed at the bottom.

6. The negative pressure debris collection device for disposable bed sheet cutting as described in claim 5, characterized in that: The cleaning mechanism includes a fixed plate (112) fixed to the top of the recycling box (1). A lead screw (114) parallel to the first filter screen (11) is rotatably mounted on the fixed plate (112). A movable block (111) is threaded onto the lead screw (114). A cleaning brush (110) is fixedly mounted on the movable block (111) near the first filter screen (111). An adjusting motor (113) with an output shaft coaxially fixed to the lead screw (114) is mounted on the fixed plate (112). A guide rod (115) passing through the movable block (111) is fixedly mounted on the fixed plate (112).

7. The negative pressure debris collection device for disposable bed sheet cutting as described in claim 6, characterized in that: The collection assembly includes an outer cover (4) that communicates with the first negative pressure chamber. A hose (41) is installed on the outer cover (4), and an absorption cover (40) is installed at the end of the hose (41) away from the outer cover (4).

8. The negative pressure debris collection device for disposable bed sheet cutting as described in claim 7, characterized in that: A horizontal plate (42) is fixedly installed inside the outer cover (4). Several fan motors (43) are fixedly installed on the horizontal plate (42). Each fan motor (43) has a fan blade (44) fixedly installed on its output shaft. When the fan blade (44) rotates, it blows air into the recycling box (1).

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