Distributor pipeline fault detection structure

Abstract

The utility model discloses a structure for detecting faults of a distributor pipeline. The structure comprises a distributor pump; the liquid inlet pipeline is connected with a material inlet of the distributor pump; the liquid outlet pipeline is connected with the discharge hole of the distributor pump; the pressure sensor is communicated with the liquid outlet pipeline and is used for detecting the pulse pressure in the liquid outlet pipeline, and the pressure sensor is arranged close to the discharge port. According to the scheme, the pulse pressure in the liquid outlet pipeline is detected through the pressure sensor, and the blockage information of the liquid outlet pipeline and the liquid inlet pipeline and the aging and damage failure information of the distributor pump can be judged according to the pressure signal of the pressure sensor, so that the blockage problem or the aging and damage problem can be conveniently found in time, and timely maintenance is carried out; and normal operation of liquid pumping is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic feeding devices, in particular to a detection structure for dispenser pipeline faults. Background Art

[0002] At present, dishwashers are becoming more and more popular. To ensure the cleaning effect of dishwashers, dishwashers need to dispense chemical agents such as cleaning agents or drying agents to improve the washing effect. To meet the requirement of dispensing chemical agents every time when washing dishes, most dishwashers are designed with automatic feeding devices, which can achieve automatic timing and quantitative dispensing.

[0003] Currently, there are often some problems in the current dispensing system:

[0004] First is the problem of liquid pipeline blockage. Once blockage occurs, the following effects will be caused:

[0005] 1. Chemical agents cannot be normally dispensed into the dishwasher, resulting in poor washing effect of the dishwasher;

[0006] 2. The blockage of the pipeline causes the pressure in the pipeline to rise, which easily leads to the leakage of chemical agents. The leaked chemical agents may cause dispenser motor failure or the control circuit failure of the whole machine;

[0007] Second is the problem of pump aging or damage in the automatic feeding system. The pump is prone to aging or damage, resulting in the inability to normally pump chemical agents. Especially when the dispensing system uses a peristaltic pump to dispense chemical agents, the pump tube of the peristaltic pump is prone to aging under the action of chemical agents and cannot pump chemical agents;

[0008] However, the current automatic dispensing system cannot detect these two problems. Summary of the Utility Model

[0009] The utility model provides a detection structure for dispenser pipeline faults. By detecting the pulse pressure inside the liquid outlet pipeline through a pressure sensor, the blockage information of the liquid outlet pipeline and the liquid inlet pipeline, as well as the aging, damage and failure information of the dispenser pump, can be judged according to the pressure signal of the pressure sensor, which is convenient for timely discovering blockage problems or aging and damage problems, and carrying out timely maintenance to ensure the normal progress of liquid pumping, thereby guaranteeing the cleaning effect of the dishwasher.

[0010] To solve the above technical problems, the technical solution of the utility model is as follows:

[0011] A detection structure for dispenser pipeline faults provided by the utility model includes:

[0012] A dispenser pump;

[0013] A liquid inlet pipeline, which is connected to the feed port of the dispenser pump;

[0014] A liquid outlet pipeline, which is connected to the discharge port of the dispenser pump;

[0015] A pressure sensor, which is communicated with the liquid outlet pipeline and detects the pulse pressure inside the liquid outlet pipeline, and the pressure sensor is arranged close to the discharge port.

[0016] Optionally, the dispenser pump is a peristaltic pump, the dispenser pump includes a pump tube, and the outlet of the pump tube serves as the discharge port of the dispenser pump. The detection structure for the dispenser pipeline failure further includes:

[0017] A three-way joint, the first interface of the three-way joint is connected to the pump tube of the dispenser pump, the second interface of the three-way joint is connected to the liquid outlet pipeline, and the third interface of the three-way joint is connected to the pressure sensor.

[0018] Optionally, the first interface of the three-way joint is arranged inside the pump tube, and the pump tube is fixedly bundled outside the first interface of the three-way joint by a cable tie.

[0019] Optionally, an anti-disengagement structure adapted to be arranged inside the pump tube is provided at the end of the first interface of the three-way joint, the outer diameter dimension of the anti-disengagement structure is larger than the outer diameter dimension of the first interface, and the bundling position of the cable tie is close to the anti-disengagement structure.

[0020] Optionally, at least part of the liquid outlet pipeline is arranged inside the second interface of the three-way joint, the second interface of the three-way joint is provided with an external thread adapted to a ferrule joint nut, and the ferrule joint nut is threadedly connected outside the second interface to connect the liquid outlet pipeline and the second interface.

[0021] Optionally, the pressure sensor is provided with a mounting thread, and an external thread adapted to the mounting thread is formed on the outside of the third interface of the three-way joint.

[0022] Optionally, a sealing ring is arranged between the third interface of the three-way joint and the pressure sensor. After the pressure sensor is connected to the third interface, both the pressure sensor and the third interface are in close contact with the sealing ring.

[0023] Optionally, the dispenser pump is arranged on a dispenser mounting base, the surface of the dispenser mounting base is provided with a mounting track, and the three-way joint is arranged in the mounting track.

[0024] Optionally, a limiting groove is arranged in the mounting track, a limiting rib is arranged on the three-way joint, the limiting rib is adapted to the limiting groove, and when the three-way joint is arranged inside the mounting track, the limiting rib is arranged inside the limiting groove.

[0025] Optionally, the dispenser mounting base is detachably connected with a fixing piece for pressing and fixing the three-way joint in the mounting track, and a through hole for exposing the third interface is provided through the surface of the fixing piece.

[0026] The above scheme of the utility model has at least the following beneficial effects:

[0027] 1. In the above scheme of the utility model, the pulse pressure inside the liquid outlet pipeline is detected by the pressure sensor. According to the pressure signal of the pressure sensor, the blockage information of the liquid outlet pipeline and the liquid inlet pipeline, as well as the aging, damage and failure information of the dispenser pump, can be judged, which is convenient for timely discovering the blockage problem or the aging and damage problem and carrying out timely maintenance to ensure the normal progress of liquid pumping;

[0028] 2. In the above scheme of the utility model, the connection between the liquid outlet pipeline and the pump pipe, and the connection between the pressure sensor and the liquid outlet pipeline are realized through the three-way joint, which is convenient for the pressure sensor to accurately detect the pulse pressure inside the liquid outlet pipeline, and ensures the accuracy and timeliness of the blockage detection of the liquid outlet pipeline and the liquid inlet pipeline, as well as the aging detection of the pump pipe;

[0029] 3. In the above scheme of the utility model, the pump pipe is bundled and fixed outside the first interface by the cable tie, and at the same time, the anti-detachment structure is used to protect the cable tie against detachment, which can ensure the stable connection between the first interface and the pump pipe, avoid the pump pipe from falling off, and ensure the normal progress of liquid pumping;

[0030] 4. In the above scheme of the utility model, the second interface is fixedly connected with the liquid outlet pipeline through the ferrule joint nut, which avoids the liquid outlet pipe from falling off and ensures the normal progress of liquid pumping;

[0031] 5. In the above scheme of the utility model, an external thread adapted to the mounting thread of the pressure sensor is provided outside the third interface, which is convenient for fixedly connecting the pressure sensor outside the third interface; at the same time, a sealing ring is arranged between the third interface and the pressure sensor, which can ensure the sealing performance of the connection between the pressure sensor and the third interface and contribute to ensuring the detection accuracy of the pressure sensor;

[0032] 6. In the above scheme of the utility model, by fixedly arranging the three-way joint inside the mounting track, the stability of the three-way joint can be ensured, so as to ensure the connection stability between the liquid outlet pipeline and the pump pipe and the three-way joint, and contribute to ensuring the detection accuracy of the pressure sensor;

[0033] 7. In the above solution of the present utility model, by providing a limiting groove inside the installation track, a limiting rib strip adapted to the limiting groove is formed on the outer side of the body of the tee joint. When the tee joint is fixed inside the installation track, the limiting rib strip is inserted into the limiting groove, which can limit and fix the tee joint, prevent the tee joint from moving inside the installation track, and further ensure the stability of the tee joint.

[0034] 8. In the above solution of the present utility model, a fixing piece is detachably connected to the surface of the dispenser mounting base, and the tee joint is pressed and fixed inside the installation track through the fixing piece, further ensuring the stability of the tee joint. Description of the Drawings

[0035] Figure 1 is a schematic structural diagram of a detection structure for dispenser pipeline faults provided by an embodiment of the present utility model;

[0036] Figure 2 is an exploded view of a detection structure for dispenser pipeline faults provided by an embodiment of the present utility model;

[0037] Figure 3 is Figure 2 an enlarged schematic view of part A of

[0038] Figure 4 is a schematic structural diagram of a fixing piece in a detection structure for dispenser pipeline faults provided by an embodiment of the present utility model;

[0039] Figure 5 is a schematic structural diagram of a tee joint in a detection structure for dispenser pipeline faults provided by an embodiment of the present utility model;

[0040] Figure 6 is a schematic connection structure diagram of a tee joint in a detection structure for dispenser pipeline faults provided by an embodiment of the present utility model.

[0041] The reference numerals are explained as follows:

[0042] 1. Dispenser pump; 11. Pump pipe; 2. Dispenser mounting base; 21. Installation track; 22. Limiting groove; 3. Tee joint; 31. First interface; 32. Second interface; 33. Third interface; 34. Anti-disconnection structure; 35. Limiting rib strip; 4. Ferrule joint nut; 5. Liquid outlet pipeline; 6. Liquid inlet pipeline; 7. Pressure sensor; 8. Sealing ring; 9. Fixing piece; 91. Through hole; 10. Cable tie. Detailed Embodiment

[0043] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0044] As Figures 1-6 shown, the present utility model provides a detection structure for dispenser pipeline faults, including:

[0045] A dispenser pump 1;

[0046] A liquid inlet pipeline 6, which is connected to the feed port of the dispenser pump 1;

[0047] A liquid outlet pipeline 5, which is connected to the discharge port of the dispenser pump 1;

[0048] A pressure sensor 7, which is communicated with the liquid outlet pipeline 5 and detects the pulsating pressure inside the liquid outlet pipeline 5. The pressure sensor 7 is arranged close to the discharge port.

[0049] In some embodiments, the above-mentioned dispenser pump 1 may be a peristaltic pump. A peristaltic pump is a common pump for transporting fluids. In other embodiments, the above-mentioned dispenser pump 1 may also be other pumps, such as a gear pump, a diaphragm pump, etc. The present application does not limit this.

[0050] In this embodiment, when the present application is applied to a dishwasher, the pressure sensor 7 is electrically connected to the main control board of the dishwasher. When the dispenser works normally to pump chemical agents, due to the operation of the dispenser pump 1, a periodic pulsating pressure will be generated inside the liquid outlet pipeline 5. The pressure sensor 7 detects this pulsating pressure and transmits the detection signal to the main control board. The main control board judges the working condition of the distribution system according to the change of the pulsating pressure detected by the pressure sensor 7, realizes the blockage information of the liquid outlet pipeline 5 and the liquid inlet pipeline 6, as well as the aging, damage and failure information of the dispenser pump 1, so as to carry out timely maintenance and ensure the normal operation of liquid pumping;

[0051] Specifically:

[0052] When the liquid inlet pipeline 6 of the dispenser is blocked, the dispenser pump 1 cannot effectively suck enough liquid, resulting in the inability to generate an effective pumping pressure. At this time, the pressure sensor 7 can effectively detect a low-pressure signal. The main control board judges that the liquid inlet pipeline 6 of the dispenser is blocked according to the low-pressure signal, and transmits the detected blockage information of the liquid inlet pipeline 6 to the dishwasher user to ensure that the blockage problem can be repaired and solved in time;

[0053] When the liquid outlet pipeline 5 of the dispenser becomes blocked, the dispenser pump 1 can normally suck in liquid at this time. However, due to the blockage of the liquid outlet pipeline 5, the liquid cannot be discharged normally. The dispenser pump 1 continues to operate, resulting in an abnormal increase in the pressure inside the liquid outlet pipeline 5. At this time, the pressure sensor 7 will detect a high-pressure signal. The main control board judges that there is a blockage problem in the liquid outlet pipeline 5 of the dispenser based on the high-pressure signal, and transmits the detected blockage information of the liquid outlet pipeline 5 to the dishwasher user to ensure that the blockage problem can be repaired and solved in time;

[0054] With the long-term use of the dispenser pump 1, especially when the dispenser pump 1 is a peristaltic pump, the pump tube 11 of the dispenser pump 1 will continuously age and be damaged due to the action of the transported chemical agent, and finally lose the pumping function, resulting in the dispenser pump 1 being unable to suck in liquid and generate pumping pressure. At this time, the pressure sensor 7 cannot detect the pulse pressure value inside the liquid outlet pipeline 5 of the dispenser for a long time. The main control board judges that there is an aging, damage and failure problem with the pump tube 11 of the dispenser pump 1 based on the detected signal, and will remind the user to replace it in time;

[0055] Those skilled in the art can understand that when the dispenser pump 1 is a pump other than a peristaltic pump, after long-term use, the internal components of the pump may be unable to work properly due to wear and tear, or the internal pipeline of the pump may be blocked due to crystallization of chemical agent precipitation, etc., resulting in aging and damage problems. Similarly, the aging and damage of the pump can be recognized based on the above logic.

[0056] This embodiment takes the application to a dishwasher as an example. At the same time, this application can also be used in other devices or systems that automatically dispense chemical agents powered by liquid pumping devices such as peristaltic pumps.

[0057] Such as Figure 2 、 Figure 5 and Figure 6 As shown, in an optional embodiment of the present invention, the dispenser pump 1 is selected to use a peristaltic pump. The dispenser pump 1 includes a pump tube 11. The outlet of the pump tube 11 serves as the discharge port of the dispenser pump 1. The detection structure for dispenser pipeline faults further includes:

[0058] A three-way joint 3. The first interface 31 of the three-way joint 3 is connected to the pump tube 11 of the dispenser pump 1. The second interface 32 of the three-way joint 3 is connected to the liquid outlet pipeline 5. The third interface 33 of the three-way joint 3 is connected to the pressure sensor 7.

[0059] In this embodiment, the connection between the liquid outlet pipeline 5 and the pump tube 11, and the connection between the pressure sensor 7 and the liquid outlet pipeline 5 are realized through the three-way joint 3, which is convenient for the pressure sensor 7 to accurately detect the pulse pressure inside the liquid outlet pipeline 5, and ensures the accuracy and timeliness of the blockage detection of the liquid outlet pipeline 5 and the liquid inlet pipeline 6, as well as the detection of the aging and damage of the pump tube 11.

[0060] As Figure 2 , Figure 5 and Figure 6 shown, in an alternative embodiment of the present utility model, the first interface 31 of the tee joint 3 is disposed inside the pump pipe 11, and the pump pipe 11 is bundled and fixed outside the first interface 31 of the tee joint 3 by a cable tie 10.

[0061] In this embodiment, by bundling and fixing the pump pipe 11 outside the first interface 31 of the tee joint 3 with the cable tie 10, it can ensure a firm connection between the pump pipe 11 and the outside of the first interface 31 of the tee joint 3, prevent the pump pipe 11 from falling off, and ensure that the dispenser pump 1 can smoothly pump liquid into the liquid outlet pipe 5.

[0062] As Figure 2 , Figure 5 and Figure 6 shown, in an alternative embodiment of the present utility model, an anti - detachment structure 34 adapted to be disposed inside the pump pipe 11 is provided at the end of the first interface 31 of the tee joint 3. The outer diameter of the anti - detachment structure 34 is larger than the outer diameter of the first interface 31, and the bundling position of the cable tie 10 is close to the anti - detachment structure 34.

[0063] In this embodiment, after bundling and fixing the pump pipe 11 outside the first interface 31 of the tee joint 3 with the cable tie 10, the anti - detachment structure 34 cooperates with the cable tie 10 for limiting, which can further prevent the pump pipe 11 from falling off and ensure that the dispenser pump 1 can smoothly pump liquid into the liquid outlet pipe 5;

[0064] In this embodiment, the anti - detachment structure 34 adopts a conical structure, which helps the anti - detachment structure 34 to be smoothly inserted into the pump pipe 11.

[0065] As Figure 2 , Figure 5 and Figure 6 shown, in an alternative embodiment of the present utility model, at least a part of the liquid outlet pipe 5 is disposed inside the second interface 32 of the tee joint 3. The second interface 32 of the tee joint 3 is provided with an external thread adapted to the ferrule joint nut 4, and the ferrule joint nut 4 is threadedly connected to the outside of the second interface 32 to connect the liquid outlet pipe 5 and the second interface 32.

[0066] In this embodiment, during installation, the liquid outlet pipe 5 penetrates through the ferrule joint nut 4, the liquid outlet pipe 5 is inserted into the second interface 32, and then the ferrule joint nut 4 is screwed and fixed at the end of the second interface 32. The fixed connection between the second interface 32 and the liquid outlet pipe 5 is realized through the ferrule joint nut 4, preventing the liquid outlet pipe from falling off and ensuring normal liquid pumping.

[0067] As Figure 2 , Figure 5 and Figure 6As shown in the figure, in an alternative embodiment of the present utility model, the pressure sensor 7 is provided with an installation thread, and an external thread adapted to the installation thread is formed on the outer side of the third interface 33 of the tee joint 3.

[0068] In this embodiment, by forming an external thread on the outer side of the third interface 33 that is adapted to the installation thread of the pressure sensor 7, it is convenient to realize the connection between the pressure sensor 7 and the third interface 33.

[0069] As Figure 2 and Figure 6 shown, in an alternative embodiment of the present utility model, a sealing ring 8 is provided between the third interface 33 of the tee joint 3 and the pressure sensor 7. After the pressure sensor 7 is connected to the third interface 33, both the pressure sensor 7 and the third interface 33 are in close contact with the sealing ring 8.

[0070] In this embodiment, by providing the sealing ring 8, after the pressure sensor 7 is connected to the third interface 33, both the pressure sensor 7 and the third interface 33 are in close contact with the sealing ring 8, which can ensure the sealing performance of the connection between the pressure sensor 7 and the third interface 33, and is helpful to ensure the detection accuracy of the pressure sensor 7.

[0071] As Figure 2 、 Figure 3 and Figure 6 shown, in an alternative embodiment of the present utility model, the dispenser pump 1 is arranged on the dispenser mounting base 2, and an installation track 21 is provided on the surface of the dispenser mounting base 2, and the tee joint 3 is arranged inside the installation track 21.

[0072] In this embodiment, by arranging the tee joint 3 inside the installation track 21, the stability of the tee joint 3 can be ensured, thereby ensuring the connection stability of the liquid outlet pipeline 5 and the pump pipe 11 to the tee joint 3, and is helpful to ensure the detection accuracy of the pressure sensor 7.

[0073] As Figure 3 and Figure 6 shown, in an alternative embodiment of the present utility model, a limiting groove 22 is provided inside the installation track 21, and a limiting rib 35 is provided on the tee joint 3. The limiting rib 35 is adapted to the limiting groove 22. When the tee joint 3 is arranged inside the installation track 21, the limiting rib 35 is arranged inside the limiting groove 22.

[0074] In this embodiment, when the tee joint 3 is arranged inside the installation track 21, the limiting rib 35 is arranged inside the limiting groove 22. By means of the limiting rib 35 and the limiting groove 22, the tee joint 3 can be limited in the extending direction of the installation track 21, preventing the tee joint 3 from moving along the extending direction of the installation track 21, and ensuring the stability of the tee joint 3 inside the installation track 21.

[0075] AsFigure 2 , Figure 4 and Figure 6 As shown in Figure 2 , Figure 4 and Figure 6 , in an alternative embodiment of the present utility model, the dispenser mounting base 2 is detachably connected with a fixing piece 9 for pressing and fixing the tee joint 3 in the mounting track 21. A through hole 91 for exposing the third interface 33 is provided through the surface of the fixing piece 9.

[0076] In this embodiment, by detachably connecting the fixing piece 9 to the dispenser mounting base 2 and pressing and fixing the tee joint 3 in the mounting track 21 through the fixing piece 9, the stability of the tee joint 3 in the mounting track 21 can be further improved.

[0077] In this embodiment, threaded holes are provided on the surface of the dispenser mounting base 2 and are distributed on both sides of the mounting track 21. Screws are provided through the surface of the fixing piece 9, and the screws are threadedly connected with the threaded holes, which facilitates the disassembly and assembly of the fixing piece 9, thereby facilitating the fixing of the tee joint 3, and the operation is simple and convenient.

[0078] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A detection structure for a distributor pipeline fault, characterized in that: include: Dispenser pump (1); A liquid inlet pipeline (6), the liquid inlet pipeline (6) being connected to a feed port of the dispenser pump (1); A liquid outlet pipeline (5), the liquid outlet pipeline (5) being connected to the outlet of the dispenser pump (1); A pressure sensor (7), the pressure sensor (7) is connected to the liquid outlet pipeline (5) and detects the internal pulse pressure of the liquid outlet pipeline (5), and the pressure sensor (7) is arranged close to the discharge port.

2. The detection structure for distributor pipeline failure according to claim 1, characterized in that: The dispenser pump (1) is a peristaltic pump, and the dispenser pump (1) comprises a pump tube (11), the outlet of the pump tube (11) serving as a material outlet of the dispenser pump (1), and the detector structure for detecting a fault in the dispenser pipeline further comprises: A three-way joint (3), wherein a first interface (31) of the three-way joint (3) is connected to a pump tube (11) of the dispenser pump (1), a second interface (32) of the three-way joint (3) is connected to the liquid outlet pipeline (5), and a third interface (33) of the three-way joint (3) is connected to the pressure sensor (7).

3. The detection structure for distributor pipeline failure according to claim 2, characterized in that: The first interface (31) of the three-way joint (3) is arranged inside the pump tube (11), and the pump tube (11) is tied and fixed to the outside of the first interface (31) of the three-way joint (3) by a cable tie (10).

4. The detection structure for distributor pipeline failure according to claim 3, characterized in that: An anti-slip structure (34) suitable for being arranged inside the pump tube (11) is provided at the end of the first interface (31) of the three-way joint (3); the outer diameter of the anti-slip structure (34) is larger than the outer diameter of the first interface (31); and the binding position of the cable tie (10) is close to the anti-slip structure (34).

5. The detection structure for distributor pipeline failure according to claim 2, characterized in that: At least a portion of the liquid outlet pipeline (5) is arranged in the second interface (32) of the three-way joint (3); the second interface (32) of the three-way joint (3) is provided with an external thread adapted to a ferrule joint nut (4); the ferrule joint nut (4) is threadedly connected to the outside of the second interface (32) to connect the liquid outlet pipeline (5) and the second interface (32).

6. The detection structure for distributor pipeline failure according to claim 2, characterized in that: The pressure sensor (7) is provided with a mounting thread, and the outer side of the third interface (33) of the three-way connector (3) is formed with an external thread that matches the mounting thread.

7. The detection structure for distributor pipeline failure according to claim 6, characterized in that: A sealing ring (8) is provided between the third interface (33) of the three-way joint (3) and the pressure sensor (7); after the pressure sensor (7) is connected to the third interface (33), both the pressure sensor (7) and the third interface (33) are in close contact with the sealing ring (8).

8. The detection structure for distributor pipeline failure according to any one of claims 2 to 7, characterized in that: The dispenser pump (1) is arranged on a dispenser mounting base (2); a mounting track (21) is arranged on the surface of the dispenser mounting base (2); and the three-way connector (3) is arranged in the mounting track (21).

9. The detection structure for distributor pipeline failure according to claim 8, characterized in that: A limiting groove (22) is provided in the mounting track (21), and a limiting rib (35) is provided on the three-way joint (3). The limiting rib (35) is adapted to the limiting groove (22), and when the three-way joint (3) is arranged in the mounting track (21), the limiting rib (35) is arranged in the limiting groove (22).

10. The detection structure for distributor pipeline failure according to claim 8, characterized in that: The distributor mounting base (2) is detachably connected to a fixing plate (9) for pressing and fixing the three-way connector (3) in the mounting track (21); a through hole (91) for exposing the third interface (33) is provided through the surface of the fixing plate (9).

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