Liquid adding equipment capable of avoiding uneven dryness and wetness

Abstract

The utility model relates to the technical field of wet tissue production equipment, in particular to liquid adding equipment capable of avoiding uneven dryness and wetness. The equipment comprises a liquid storage tank which is connected with the input end of a liquid adding pump through a first conveying pipe section, and the output end of the liquid adding pump is connected with a liquid adding pipe set through a second conveying pipe section; the conveying assembly is located on the side of the liquid storage tank and located below the liquid adding pipe set; the input end of the liquid supplementing pump is connected with the liquid storage tank through a first liquid supplementing pipe section, the output end of the liquid supplementing pump is connected with a second liquid supplementing pipe section, the tail end of the second liquid supplementing pipe section is provided with a liquid supplementing spray pipe, and the liquid supplementing spray pipe is located above the liquid adding pipe set; the flow meter is arranged on the second infusion tube section; and the controller is in signal connection with the flow meter and the liquid supplementing pump. The liquid adding device effectively solves the technical problems that in the prior art, the liquid adding speed is unstable in the starting and stopping process of liquid adding equipment, the liquid adding amount is small, and the wet tissue production quality is affected.

Description

Technical Field

[0001] This utility model relates to the technical field of wet wipe production equipment, and in particular to a liquid addition device that avoids uneven drying and wetting. Background Technology

[0002] Wet wipes are a common cleaning product, typically made from non-woven fabric or paper towels as the base material, and impregnated with liquid components such as purified water, disinfectant, skin care ingredients, moisturizers, preservatives, and antibacterial agents. They have multiple functions, including cleaning, moisturizing, sterilization, and disinfection. Currently, wet wipe production usually involves adding liquid to the non-woven fabric in a liquid-adding tank before folding it. This method of adding liquid makes the non-woven fabric prone to deformation when entering the next process, resulting in poor quality and low output of the wet wipes.

[0003] In response, patent document CN219653285U discloses a fully automatic wet wipe liquid dispensing device. This device has an infeed conveyor and an outfeed conveyor at both ends of the frame. Between the two conveyors is a bidirectional gripping device and a flip-type folding cloth strip clamp. A liquid dispensing mechanism is installed above the flip-type folding cloth strip clamp. During use, the clamping plate assembly of the flip-type folding cloth strip clamp clamps or releases the wet wipe substrate. The bidirectional gripping device picks up the wet wipe substrate and places it into the clamping plate assembly. The liquid dispensing mechanism sprays and dispenses liquid onto it. The clamping plate assembly rotates freely under the drive of a motor, thus enabling liquid dispensing to both sides of the wet wipe substrate, improving the uniformity and penetration of the liquid. After dispensing, the bidirectional gripping device removes the wet wipe substrate and places it into the outfeed conveyor, preventing the wet cloth strip from sticking to the conveyor and causing deformation.

[0004] However, when the above-mentioned liquid adding equipment adds liquid to the wet wipe substrate, there is a period of acceleration or deceleration when the equipment starts or is about to stop (i.e., the process of the liquid adding speed increasing from zero to a stable speed or decreasing from a stable speed to zero). During this process, the liquid adding speed is unstable, which can easily lead to insufficient liquid adding and affect the production quality of the wet wipes. Utility Model Content

[0005] This invention provides a liquid dispensing device that avoids uneven drying and wetting, thereby solving the technical problem in the prior art where the liquid dispensing speed is unstable during start-up and shutdown, resulting in insufficient liquid dispensing and affecting the production quality of wet wipes.

[0006] To solve the above problems, the liquid addition device for avoiding uneven drying and wetting provided by this utility model adopts the following technical solution:

[0007] A liquid addition device that avoids uneven drying and wetting, comprising:

[0008] The liquid storage tank is used to store liquid. The liquid storage tank is connected to the input end of the liquid dispensing pump through the first delivery pipe section. The output end of the liquid dispensing pump is connected to the liquid dispensing pipe assembly through the second delivery pipe section. The liquid dispensing pipe assembly is used to dispense liquid to the wet wipe substrate.

[0009] A conveying assembly, located beside the liquid storage tank and below the liquid dispensing tube assembly, is used to convey the wet wipe substrate;

[0010] Also includes:

[0011] The replenishment pump has its input end connected to the storage tank through a first replenishment pipe section, and its output end connected to a second replenishment pipe section. The end of the second replenishment pipe section is provided with a replenishment nozzle, which is located above the replenishment pipe assembly.

[0012] A flow meter is installed on the second infusion line section to monitor the flow rate of the liquid in the second infusion line section;

[0013] A controller, which is signal-connected to the flow meter and the replenishment pump, is used to receive monitoring information from the flow meter and control the start and stop of the replenishment pump.

[0014] The beneficial effects of the liquid addition device for avoiding uneven wetting provided by this utility model are as follows: By setting up a liquid replenishment pump and a liquid replenishment nozzle, and placing the liquid replenishment nozzle above the liquid addition pipe assembly, and installing a flow meter on the second liquid delivery pipe section used to connect the liquid replenishment pump and the liquid addition pipe assembly, and connecting the flow meter and the liquid replenishment pump to the controller, the flow meter can monitor the flow rate information of the liquid in the second liquid delivery pipe section in real time and transmit the monitored information to the controller. The controller controls the opening and closing of the liquid replenishment pump based on the received flow rate information. Thus, when the flow rate is low, the liquid replenishment pump can be turned on to replenish the unevenly added wet wipe substrate to meet production requirements. When the flow rate meets the requirements, the liquid replenishment pump can be turned off to avoid excessive liquid addition and waste of liquid.

[0015] Through the above-mentioned design, this utility model effectively solves the technical problem in the prior art where the liquid addition speed is unstable during the start-up and shutdown process of the liquid addition equipment, resulting in insufficient liquid addition and affecting the production quality of wet wipes.

[0016] Furthermore, a liquid receiving tank is provided below the conveying component to receive liquid that is not absorbed by the wet wipe substrate and is output by the liquid adding tube assembly and the liquid replenishing nozzle.

[0017] Furthermore, a liquid storage tank is provided below the end of the liquid receiving tank, which is used to store the liquid discharged from the liquid receiving tank.

[0018] Furthermore, a liquid return assembly is provided between the liquid storage tank and the liquid storage container to recover the liquid in the liquid storage tank.

[0019] Beneficial effects: By setting up a liquid return component, excess liquid can be recycled and reused, effectively avoiding waste of output liquid and reducing the production cost of wet wipes.

[0020] Furthermore, the liquid return assembly includes a liquid return pump, the input end of which is connected to the liquid storage tank through a first liquid return pipe section, and its output end is connected to the liquid storage tank through a second liquid return pipe section.

[0021] Furthermore, the liquid dispensing tube assembly includes multiple spaced liquid dispensing tubes, each with multiple spray holes for spraying liquid onto the wet wipe substrate.

[0022] Furthermore, a weighing scale is provided at the conveying end of the conveying component. The weighing scale is signal-connected to the controller to weigh the wet wipe substrate after liquid addition and transmit the weighed weight data to the controller to assist the controller in achieving precise control.

[0023] Furthermore, a liquid filling neutral plate is provided between the second infusion tube section and the liquid filling tube assembly.

[0024] Furthermore, the liquid filling neutral plate is equipped with a neutral plate bracket for supporting the liquid filling neutral plate.

[0025] Furthermore, the conveying assembly includes multiple conveying rollers that rotate in the same direction. Attached Figure Description

[0026] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0027] Figure 1 This is a schematic diagram of the liquid addition device provided by this utility model to avoid uneven drying and wetting.

[0028] Figure 2 for Figure 1 The diagram shows a top view of the liquid dispensing equipment designed to prevent uneven drying and wetting.

[0029] Figure 3 for Figure 1 The image shows a side view of a liquid dispensing device designed to prevent uneven drying.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Storage tank; 2. First delivery pipe section; 3. Adding pump; 4. Second delivery pipe section; 5. Replenishment pump; 6. First replenishment pipe section; 7. Second replenishment pipe section; 8. Replenishment nozzle; 9. Flow meter; 10. Receiving tank; 11. Storage tank; 12. Return pump; 13. First return pipe section; 14. Second return pipe section; 15. Adding pipe; 16. Filter plate; 17. Adding center plate; 18. Center plate support; 19. Conveyor roller. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] It should be noted that the main concept of the liquid addition device for avoiding uneven drying and wetting provided by this utility model is as follows: by setting a replenishing spray pipe above the liquid addition pipe assembly, the replenishing spray pipe is connected to the liquid storage tank through a replenishing pump. The replenishing pump draws liquid from the liquid storage tank and delivers it to the replenishing spray pipe. A flow meter is set on the second liquid delivery pipe section used to connect the liquid addition pump and the liquid addition pipe assembly. Both the flow meter and the replenishing pump are connected to the controller signal. The controller receives the flow information monitored by the flow meter and controls the opening and closing of the replenishing pump according to the received information. In this way, the amount of liquid sprayed onto the wet wipe substrate can be accurately controlled, ensuring the production quality of the wet wipes.

[0034] After introducing the basic principles of this utility model, various non-limiting embodiments of this utility model are described in detail below. Any quantity of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0035] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0036] Example 1 of the liquid addition device for avoiding uneven drying and wetting provided by this utility model:

[0037] like Figures 1 to 3 As shown, the liquid addition device to avoid uneven drying and wetting includes a liquid storage tank 1. The liquid storage tank 1 is connected to a liquid addition pump 3, a liquid replenishment pump 5, and a liquid return assembly. The output end of the liquid addition pump 3 is connected to a liquid addition pipe assembly, and the output end of the liquid replenishment pump 5 is connected to a liquid replenishment nozzle 8. A conveying assembly is provided on the side of the liquid storage tank 1. A flow meter 9 is provided between the liquid addition pump 3 and the liquid addition pipe assembly. Both the flow meter 9 and the liquid replenishment pump 5 are connected to a controller (not shown in the figure), wherein the controller is a programmable logic controller.

[0038] The following describes the structure of the liquid filling tube assembly and the connection between the liquid filling pump 3, the liquid storage tank 1, and the liquid filling tube assembly. The liquid filling tube assembly is located above the conveying component and includes multiple spaced liquid filling tubes 15. Each liquid filling tube 15 has multiple spray holes for spraying liquid onto the wet wipe substrate. The liquid filling tubes 15 are connected to the output end of the liquid filling pump 3 through the second liquid delivery tube section 4, and the input end of the liquid filling pump 3 is connected to the liquid storage tank 1 through the first delivery tube section 2.

[0039] The conveying assembly includes multiple conveying rollers 19 that rotate in the same direction.

[0040] Next, we will describe the connection between the replenishment pump 5, the storage tank 1, and the replenishment nozzle 8. The input end of the replenishment pump 5 is connected to the storage tank 1 through the first replenishment pipe section 6, and its output end is connected to the replenishment nozzle 8 through the second replenishment pipe section 7. The replenishment nozzle 8 is located above the replenishment pipe assembly.

[0041] To ensure that the amount of liquid added to the wet wipe substrate meets the requirements during the liquid addition process, multiple flow meters 9 are installed on the second infusion pipe section 4, and a weighing meter (not shown in the figure) is installed at the end of the conveying component. The flow meters 9 monitor the flow rate of the liquid in the second infusion pipe section 4, and the weighing meter is used to weigh the wet wipe substrate after liquid addition. The flow meters 9, the replenishment pump 5, and the weighing meter are all connected to the controller signal so that the controller can receive the information monitored by the flow meters 9 and the weighing meter, and control the opening and closing of the replenishment pump 5 according to the received information, so as to achieve precise control of the liquid addition amount and the quality of the wet wipes.

[0042] In order to recycle the liquid that is not absorbed by the wet wipe substrate and output from the liquid filling pipe 15 and the liquid replenishment nozzle 8 during the liquid filling process, a liquid receiving tank 10 is provided below the end of the conveying component. A liquid storage tank 11 is provided below one end of the liquid receiving tank 10. A filter plate 16 is provided on the top of the liquid storage tank 11 to filter out excess water in the wet wipe substrate. A liquid return component is provided between the liquid storage tank 11 and the liquid storage tank 1. The liquid return component includes a liquid return pump 12. The input end of the liquid return pump 12 is connected to the liquid storage tank 11 through the first liquid return pipe section 13, and its output end is connected to the liquid storage tank 1 through the second liquid return pipe section 14.

[0043] Finally, it should be noted that a liquid filling center plate 17 is provided between the second infusion tube section 4 and the liquid filling tube group. The liquid filling center plate 17 is equipped with a center plate bracket 18, which is used to support the liquid filling center plate 17.

[0044] The working principle of the liquid addition device that avoids uneven drying and wetting provided by this utility model is as follows:

[0045] When the equipment starts working, the conveying component transports the wet wipe substrate. At the same time, the liquid pump 3 starts working and draws out the liquid in the storage tank 1. The liquid is sprayed onto the wet wipe substrate located on the conveying component through the first conveying pipe section 2, the second liquid delivery pipe section 4, the flow meter 9, the liquid filling plate 17 and the liquid filling pipe 15 in sequence. The liquid that is not absorbed by the wet wipe substrate flows into the receiving tank 10 and is transported to the storage tank 11 by the receiving tank 10. Under the action of the return pump 12, the liquid is transported back to the storage tank 1 from the storage tank 11 through the first return pipe section 13 and the second return pipe section 14 in sequence.

[0046] When the controller receives the flow signal monitored by the flow meter 9 and determines that the liquid flow is too low, it controls the replenishment pump 5 to start. The replenishment pump 5 draws out the liquid in the storage tank 1 and sprays it onto the wet wipe substrate in sequence through the first replenishment pipe section 6, the second replenishment pipe section 7 and the replenishment spray pipe 8 to ensure the moisture content of the wet wipe.

[0047] After the wet wipe substrate is filled with liquid, it falls into the weighing scale. The weighing scale weighs the wet wipe substrate and transmits the weight information to the controller. The controller determines whether the weight of the wet wipe substrate is qualified. If it is not qualified, it controls to increase or decrease the flow rate of the replenishment pump 5 to increase or decrease the replenishment amount so that the wet wipes produced later meet the requirements.

[0048] Embodiment 2 of the liquid addition device for avoiding uneven drying and wetting provided by this utility model:

[0049] Its main difference from Example 1 is:

[0050] In Example 1, a liquid storage tank is provided below one end of the liquid receiving tank.

[0051] In this embodiment, a liquid storage tank is provided at both ends of the liquid receiving tank along its length.

[0052] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0053] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A liquid addition device to avoid uneven drying and wetting, comprising: The liquid storage tank is used to store liquid. The liquid storage tank is connected to the input end of the liquid dispensing pump through the first delivery pipe section. The output end of the liquid dispensing pump is connected to the liquid dispensing pipe assembly through the second delivery pipe section. The liquid dispensing pipe assembly is used to dispense liquid to the wet wipe substrate. A conveying assembly, located beside the liquid storage tank and below the liquid dispensing tube assembly, is used to convey the wet wipe substrate; Its characteristic is that it further includes: The replenishment pump has its input end connected to the storage tank through a first replenishment pipe section, and its output end connected to a second replenishment pipe section. The end of the second replenishment pipe section is provided with a replenishment nozzle, which is located above the replenishment pipe assembly. A flow meter is installed on the second infusion line section to monitor the flow rate of the liquid in the second infusion line section; A controller, which is signal-connected to the flow meter and the replenishment pump, is used to receive monitoring information from the flow meter and control the start and stop of the replenishment pump.

2. The liquid addition device for avoiding uneven drying and wetting according to claim 1, characterized in that, A liquid receiving tank is provided below the conveying component to receive liquid that is not absorbed by the wet wipe substrate and is output by the liquid adding tube assembly and the liquid replenishing nozzle.

3. The liquid addition device for avoiding uneven drying and wetting according to claim 2, characterized in that, A liquid storage tank is provided below the end of the liquid receiving tank, which is used to store the liquid discharged from the liquid receiving tank.

4. The liquid addition device for avoiding uneven drying and wetting according to claim 3, characterized in that, A liquid return assembly is provided between the liquid storage tank and the liquid storage container to recover the liquid in the liquid storage tank.

5. The liquid addition device for avoiding uneven drying and wetting according to claim 4, characterized in that, The liquid return assembly includes a liquid return pump, the input end of which is connected to the liquid storage tank through a first liquid return pipe section, and the output end of which is connected to the liquid storage tank through a second liquid return pipe section.

6. The liquid addition device for avoiding uneven drying and wetting according to any one of claims 1 to 5, characterized in that, The liquid dispensing tube assembly includes multiple spaced-apart liquid dispensing tubes, each with multiple spray holes for spraying liquid onto the wet wipe substrate.

7. The liquid addition device for avoiding uneven drying and wetting according to any one of claims 1 to 5, characterized in that, The conveying end of the conveying component is equipped with a weighing scale, which is signal-connected to the controller to weigh the wet wipe substrate after liquid addition and transmit the weighed weight data to the controller to assist the controller in achieving precise control.

8. The liquid addition device for avoiding uneven drying and wetting according to any one of claims 1 to 5, characterized in that, A liquid filling center plate is provided between the second infusion tube section and the liquid filling tube group.

9. The liquid addition device for avoiding uneven drying and wetting according to claim 8, characterized in that, The liquid filling neutral plate is equipped with a neutral plate bracket for supporting the liquid filling neutral plate.

10. The liquid addition device for avoiding uneven drying and wetting according to any one of claims 1 to 5, characterized in that, The conveying assembly includes multiple conveying rollers that rotate in the same direction.

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