Cleaning machine

Abstract

The utility model provides a cleaning machine which comprises a machine frame and further comprises a motor, a high-pressure plunger pump and an intelligent control box which are arranged on the machine frame. The motor is in transmission connection with the high-pressure plunger pump and used for providing power to drive the high-pressure plunger pump to work. The high-pressure plunger pump comprises a box body and an oil drain plug arranged on the box body. The oil drain plug comprises an oil drain plug shell, a temperature sensor arranged in the oil drain plug shell and a magnet arranged on the oil drain plug shell. The intelligent control box is electrically connected with the motor and the temperature sensor and used for controlling the motor to work according to signals of the temperature sensor. According to the cleaning machine provided by the utility model, the temperature sensor is additionally arranged on the oil drain plug, and the newly added temperature detection function can deal with abnormal oil temperature in the first time, so that the service life of the whole machine, especially the service life of the high-pressure plunger pump, is prolonged; and an integrated design is adopted, so that the temperature sensor can be conveniently overhauled during oil drainage.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning machines, in particular to a cleaning machine. Background Art

[0002] A high-pressure cleaner is a machine that includes a high-pressure plunger pump for cleaning purposes. It uses a high-pressure plunger pump to increase the pressure of the water outlet to form a high-pressure water column to achieve a cleaning effect. The core part is the high-pressure plunger pump, which consists of a box and a pump cover. The oil chamber inside the box is filled with lubricating oil. The lubricating oil plays a good lubrication and cooling effect during the operation of the high-pressure plunger pump. When the high-pressure plunger pump reaches a certain life, the lubricating oil in the box needs to be replaced. If the state of the lubricating oil is abnormal, such as water inflow or lack of oil, it also needs to be replaced in time, otherwise it will cause irreparable damage to other parts in the box, and even the entire high-pressure plunger pump will be scrapped. Therefore, it is necessary to monitor the lubricating oil in the box in real time. This process is time-consuming and labor-intensive, and the work efficiency is low. If the user fails to find the oil abnormality in time, the eccentric shaft and connecting rod in the box will be locked, and eventually the entire high-pressure plunger pump will be scrapped. Therefore, during use, the maintenance and care of the pump assembly is extremely important and is a key factor affecting the life of the entire machine.

[0003] The existing technology relies on temperature sensors to monitor the temperature of the oil in real time. The temperature sensors are easily interfered by metal debris in the oil, resulting in abnormal detection. In addition, the box opening is cumbersome, which makes the temperature sensor maintenance time-consuming and labor-intensive, with poor operability and low work efficiency, resulting in a bad experience for end users. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a cleaning machine, by adding a temperature sensor to the oil drain plug, the newly added temperature detection function can deal with abnormal oil temperature in the first time, thereby extending the life of the whole machine, especially the life of the high-pressure plunger pump; and an integrated design is adopted to facilitate the inspection and maintenance of the temperature sensor when draining the oil; and a magnet is also provided on the oil drain plug to absorb metal debris, thereby increasing the service life and detection accuracy of the temperature sensor.

[0005] The utility model provides a cleaning machine, comprising a frame, the cleaning machine also comprising a motor, a high-pressure plunger pump and an intelligent control box arranged on the frame; the motor is drivingly connected to the high-pressure plunger pump, and the motor is used to provide power to drive the high-pressure plunger pump to work; the high-pressure plunger pump comprises a box body with an oil drain port and an oil drain plug, the oil drain plug is detachably and detachably installed at the oil drain port of the box body, the oil drain plug comprises an oil drain plug shell, a temperature sensor arranged in the oil drain plug shell and a magnet arranged on the oil drain plug shell, the magnet is used to absorb metal debris in the box body; the intelligent control box is electrically connected to the motor and the temperature sensor respectively, and is used to control the operation of the motor according to the signal of the temperature sensor.

[0006] Specifically, an oil cavity is formed inside the housing, the oil drain port is arranged at the bottom of the housing, and the oil drain plug passes through the oil drain port and extends the temperature sensor into the oil cavity to be fixedly connected with the housing.

[0007] Specifically, the magnet is detachably mounted on the outside of the oil drain plug and extends into the oil cavity along with the oil drain plug. The magnet is used to absorb metal debris in the oil cavity.

[0008] Specifically, the high-pressure plunger pump further includes an oil dipstick. The top of the box body is provided with an oil dipstick opening. The oil dipstick passes through the oil dipstick opening and is fixedly connected to the box body.

[0009] Specifically, the intelligent control box includes a sensing device, which is arranged on the surface of the intelligent control box, and is used to detect and sense the magnet to confirm that the oil drain plug leaves the box.

[0010] Specifically, the oil drain plug further includes a sensing chip, which is disposed inside the oil drain plug. The sensing chip is used to sense the sensing device to confirm that the oil drain plug leaves the box.

[0011] Specifically, the high-pressure plunger pump also includes an oil window mechanism, which includes an observation oil window and an oil window cover; the observation oil window is embedded in the side wall of the box body for observing the situation in the oil cavity; the oil window cover is arranged on the outside of the box body for covering the observation oil window.

[0012] Specifically, the oil drain plug shell is a hollow columnar body, a cable hole is opened at the bottom of the oil drain plug shell, and the temperature sensor is arranged inside the oil drain plug shell at one end away from the cable hole; the intelligent control box also includes a signal line, which passes through the cable hole and is electrically connected to the temperature sensor.

[0013] Specifically, the high-pressure plunger pump also includes a pump head assembly, which includes a water inlet joint and a water outlet joint. The pump head assembly is fixedly connected to the housing; the housing is a transmission part, which is used to convert the power output by the motor into an extrusion force to convert the medium flowing through the pump head assembly from low pressure to high pressure. The housing is a transmission device, and water only flows in the pump head assembly. The pressurization effect is jointly generated by the work done by the housing and the pump head assembly.

[0014] Specifically, the high-pressure plunger pump further includes a pressure gauge, which is disposed on the pump head assembly and is used to monitor the pressure of the fluid medium inside the pump head assembly.

[0015] In summary, the embodiment of the utility model adds a temperature sensor to the oil drain plug. The newly added temperature detection function can handle abnormal oil temperature in the first time, thereby extending the life of the entire machine, especially the life of the high-pressure plunger pump; and adopts an integrated design to facilitate the inspection and maintenance of the temperature sensor when draining the oil; and a magnet is also provided on the oil drain plug to absorb metal debris, thereby increasing the service life and detection accuracy of the temperature sensor.

[0016] Moreover, by adding a sensing device on the surface of the smart control box, which cooperates with the magnet of the oil drain plug, the alarm cannot be triggered unless the magnet touches the sensing device, which can effectively prevent workers from forgetting to change the oil due to laziness or negligence.

[0017] Moreover, by adding a sensing chip in the oil drain plug and cooperating with the sensing device, the loophole that workers can easily cancel the alarm by finding a magnet after the oil change alarm occurs can be repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a cleaning machine in an embodiment of the utility model;

[0020] Figure 2 The structure of the high pressure plunger pump in the embodiment of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 3 The structure of the high pressure plunger pump in the embodiment of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 4 It is a cross-sectional view of the oil drain plug in the embodiment of the utility model.

[0023] Among them, the reference numerals of the embodiments of the utility model in the above drawings are as follows:

[0024] 100, rack;

[0025] 200, motor;

[0026] 300, high pressure plunger pump; 310, housing; 311, oil drain port; 312, oil chamber; 320, pressure gauge; 330, oil window mechanism; 340, pump head assembly; 350, oil dipstick; 360, oil drain plug; 361, oil drain plug housing; 362, cable hole; 363, temperature sensor; 364, induction chip; 365, magnet;

[0027] 400, intelligent control box; 401, sensing device; 402, signal line. DETAILED DESCRIPTION

[0028] The following will describe in detail a specific embodiment of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the description of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0031] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0032] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0033] The following is a detailed description through specific embodiments.

[0034] like Figures 1 to 4 As shown, the embodiment of the utility model provides a cleaning machine, including a frame 100, a motor 200, a high-pressure plunger pump 300 and an intelligent control box 400 arranged on the frame 100. The motor 200 is a driving component; the high-pressure plunger pump 300 is an execution component, which is also the core component; and the intelligent control box 400 is a control component.

[0035] The motor 200 is in transmission connection with the high-pressure plunger pump 300, and the motor 200 is used to provide power to drive the high-pressure plunger pump 300 to work. The high-pressure plunger pump 300 includes a housing 310 with an oil drain port 311 and an oil drain plug 360, and the oil drain plug 360 is detachably and detachably installed at the oil drain port 311 of the housing 310. The oil drain plug 360 is removed when the oil is changed, and the oil in the oil cavity 312 flows out of the housing 310 from the oil drain port 311 under the action of gravity. After the oil drain plug 360 flows out, the oil drain plug 360 is screwed back to the oil drain port 311, and the housing 310 regains its sealing performance. The drain plug 360 includes a drain plug housing 361, a temperature sensor 363 disposed in the drain plug housing 361, and a magnet 365 disposed on the drain plug housing 361. The magnet 365 is used to absorb metal debris in the box 310, and the temperature sensor 363 is used to detect the temperature of the oil in the oil cavity 312. The intelligent control box 400 is electrically connected to the motor 200 and the temperature sensor 363, respectively, and is used to control the operation of the motor 200 according to the signal of the temperature sensor 363. The high-pressure plunger pump 300 is an actuator, and the signal of the intelligent control box 400 can only directly control the on and off of the motor 200 and indirectly control the operation of the high-pressure plunger pump 300.

[0036] In this embodiment, an oil cavity 312 is formed inside the box 310 , an oil drain port 311 is arranged at the bottom of the box 310 , and an oil drain plug 360 passes through the oil drain port 311 and extends the temperature sensor 363 into the oil cavity 312 to be fixedly connected to the box 310 .

[0037] In this embodiment, the magnet 365 is detachably mounted on the outside of the drain plug 360 and extends into the oil cavity 312 along with the drain plug 360. The magnet 365 is used to absorb metal debris in the oil cavity 312. Specifically, the magnet 365 is a half-wrapped structure, which wraps half of one end of the drain plug 360 and is fixed to the drain plug housing 361 by glue or other means. When the connecting rod, eccentric shaft and other mechanisms in the housing 310 are working, metal debris will be generated due to collision or friction. The metal debris flows with the oil in the oil cavity 312, and often interferes with the drain plug housing 361 during operation, affecting the service life and detection accuracy of the temperature sensor 363. By adding the magnet 365 to the drain plug housing 361, the metal debris in the oil can be absorbed by the magnet 365, reducing the interference with the temperature sensor 363, and when changing the oil, it is only necessary to remove the drain plug 360 to clean the metal debris absorbed by the magnet 365 without disassembling the entire housing 310. In the conventional technology, the oil drain plug 360, the temperature sensor 363 and the magnet 365 are three independent devices, which are distributed in different positions in the housing 310, and thus have high maintenance costs, complex structures and low production efficiency.

[0038] like Figure 1 and Figure 4 As shown, in this embodiment, the intelligent control box 400 includes a sensing device 401, which is arranged on the surface of the intelligent control box 400, and the sensing device 401 is used to detect the induction magnet 365 to confirm that the drain plug 360 leaves the box 310. Optionally, a sensing chip 364 can also be provided in the drain plug 360, and the sensing chip 364 is arranged inside the drain plug 360, and the sensing chip 364 is used to sense with the sensing device 401 to confirm that the drain plug 360 leaves the box 310. When the oil temperature in the oil cavity 312 is abnormal, or the user's use time reaches the maintenance standard, the intelligent control box 400 issues an alarm, and the user needs to replace the oil in the oil cavity 312 before the cleaning machine can work normally. However, some users are too lazy to change the oil or do not notice the alarm because they are busy with work and have not changed the oil. At this time, the cleaning machine can be forced to shut down, and the cleaning machine can only be turned on after the sensing device 401 detects the magnet 365 of the oil drain plug 360, that is, the oil drain plug 360 must leave the box 310 and touch the sensing device 401. However, it is possible that the user can break this safety measure by just finding a magnet 365, so it is necessary to add a sensing chip 364 to force the customer to change the oil, otherwise the cleaning machine is not allowed to be turned on to ensure safety.

[0039] like Figure 4As shown, in this embodiment, the drain plug housing 361 is a hollow columnar body, a cable hole 362 is provided at the bottom of the drain plug housing 361, and the temperature sensor 363 is arranged at one end of the drain plug housing 361 away from the cable hole 362; the intelligent control box 400 also includes a signal line 402, which passes through the cable hole 362 and is electrically connected to the temperature sensor 363. The temperature sensor 363 is arranged in the drain plug housing 361 because the drain plug housing 361 can protect the temperature sensor 363 from being eroded by the oil or scratched by metal debris in the oil, and the drain plug housing 361 is made of a material that is easy to conduct heat, so it will not affect the detection function of the temperature sensor 363. The magnet 365 is arranged outside the drain plug 360 because it is convenient to clean the metal debris adsorbed by the magnet 365, and when the magnetic force of the magnet 365 is weakened, it is convenient to replace the magnet 365, thereby reducing maintenance costs. The side of the oil drain plug housing 361 is provided with an external thread, which is connected to the internal thread at the oil drain port 311. The internal and external threads cooperate to achieve a fixed connection between the oil drain plug 360 and the box body 310, and the oil drain plug 360 can be screwed out of the box body 310 when necessary.

[0040] like Figure 2 As shown, in this embodiment, the high-pressure plunger pump 300 further includes an oil dipstick 350. The top of the housing 310 is provided with an oil dipstick 350 opening, and the oil dipstick 350 passes through the oil dipstick 350 opening and is fixedly connected to the housing 310. The oil dipstick 350 is used to detect the height of the oil in the oil cavity 312. The oil dipstick 350 is pulled out from the oil dipstick 350 opening, and the oil capacity can be determined according to the position of the oil immersed in the oil dipstick 350.

[0041] like Figure 2 As shown, in this embodiment, the high-pressure plunger pump 300 also includes an oil window mechanism 330, and the oil window mechanism 330 includes an observation oil window and an oil window cover; the observation oil window is embedded in the side wall of the box body 310, and is used to observe the situation in the oil cavity 312; the oil window cover is set on the outside of the box body 310, and is used to cover the observation oil window. The observation oil window is a transparent plastic part, and the height and state of the oil in the box body 310 can be viewed through the observation oil window. The oil window cover is circular, and is used to cover the observation oil window to play a sealing role, prevent the oil from flowing out of the box body 310 from the observation oil window, and increase the sealing of the box body 310.

[0042] like Figure 2As shown, in this embodiment, the high-pressure plunger pump 300 also includes a pump head assembly 340, and the pump head assembly 340 includes a water inlet joint and a water outlet joint. The pump head assembly 340 is fixedly connected to the box body 310 by transmission; the box body 310 is a transmission part, which is used to convert the power output by the motor 200 into an extrusion force to convert the medium flowing through the pump head assembly 340 from low pressure to high pressure. The box body 310 is a transmission device, and water only flows in the pump head assembly 340. The pressurization effect is jointly generated by the work of the two components of the box body 310 and the pump head assembly 340. When the cleaning machine is working, clean water flows into the pump head assembly 340 from the water inlet joint, and under the pressure generated by the operation of the motor 200, it flows out from the water outlet joint after being pressurized, generating high-pressure water, thereby realizing the cleaning function.

[0043] like Figure 2 As shown, in this embodiment, the high-pressure plunger pump 300 further includes a pressure gauge 320 , which is disposed on the pump head assembly 340 and is used to monitor the pressure of the fluid medium inside the pump head assembly 340 .

[0044] Working principle of temperature sensor 363: When the oil in box 310 is insufficient or the oil quality is abnormal, the lubrication and cooling performance is affected, and the temperature inside box 310 rises. By monitoring the temperature of the lubricating oil inside box 310, it can directly reflect whether the quality and capacity of the oil in box 310 are normal, thereby protecting other important parts inside box 310.

[0045] The specific working process of the cleaning machine is as follows: the temperature sensor 363 continuously detects the temperature of the oil in the oil cavity 312 and outputs the temperature signal through the signal line 402 to the intelligent control box 400. The intelligent control box 400 continuously monitors the oil temperature and determines whether the temperature is higher than the preset value. When the temperature is lower than the preset value, the intelligent control box 400 controls the motor 200 and the high-pressure plunger pump 300 to be powered on, and the cleaning machine works normally. When the temperature exceeds the preset value, the motor 200 and the high-pressure plunger pump 300 are powered off, the cleaning machine stops working, and the oil fault code is displayed to remind the user to check and replace the oil. The user needs to remove the drain plug 360 from the box 310 and touch the sensing chip 364 of the drain plug 360 to the sensing device 401 of the intelligent control box 400. That is, the user is forced to remove the drain plug 360 to ensure that the oil flows out, which is a mandatory safety measure. After the oil is changed, the temperature of the oil decreases and is lower than the preset value. The intelligent control box 400 controls the motor 200 and the high-pressure plunger pump 300 to be powered on, and the cleaning machine operates normally.

[0046] This solution can realize unmanned monitoring. When the oil is in abnormal condition, the whole machine will automatically cut off the power and report the relevant fault code to remind the user to perform maintenance. While ensuring the life of the high-pressure cleaner is extended, it saves labor and improves the customer experience.

[0047] In summary, the embodiment of the utility model adds a temperature sensor 363 to the oil drain plug 360. The newly added temperature detection function can deal with abnormal oil temperature in the first time, thereby extending the life of the entire machine, especially the life of the high-pressure plunger pump 300; and adopts an integrated design, which is convenient for the inspection and maintenance of the temperature sensor 363 when draining the oil. The temperature sensor 363 is integrated with the oil drain plug 360, and the temperature sensor 363 can be inspected when draining the oil without disassembling the entire box 310; and the oil drain plug 360 is also provided with a magnet 365 to absorb metal debris, which increases the service life and detection accuracy of the temperature sensor 363.

[0048] Furthermore, by adding a sensing device 401 on the surface of the intelligent control box 400 to cooperate with the magnet 365 of the oil drain plug 360, the alarm cannot be triggered unless the magnet 365 touches the sensing device 401, which can effectively prevent workers from forgetting to change the oil due to laziness or negligence.

[0049] Furthermore, by adding a sensing chip 364 in the oil drain plug 360 and cooperating with the sensing device 401, the loophole that a worker can remove the alarm by simply finding a magnet 365 after the oil change alarm occurs can be repaired.

[0050] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A cleaning machine, comprising a frame, characterized in that: The cleaning machine also includes a motor, a high-pressure plunger pump and an intelligent control box arranged on the frame; the motor is drivingly connected to the high-pressure plunger pump, and the motor is used to provide power to drive the high-pressure plunger pump to work; the high-pressure plunger pump includes a box body with an oil drain port and an oil drain plug, and the oil drain plug is detachably and detachably installed at the oil drain port of the box body, and the oil drain plug includes an oil drain plug shell, a temperature sensor arranged in the oil drain plug shell and a magnet arranged on the oil drain plug shell, and the magnet is used to absorb metal debris in the box body; the intelligent control box is electrically connected to the motor and the temperature sensor respectively, and is used to control the operation of the motor according to the signal of the temperature sensor.

2. The cleaning machine according to claim 1, characterized in that: An oil cavity is formed inside the box body, the oil drain port is arranged at the bottom of the box body, and the oil drain plug passes through the oil drain port and extends the temperature sensor into the oil cavity and is fixedly connected to the box body.

3. The cleaning machine according to claim 2, characterized in that: The magnet is detachably mounted on the outside of the oil drain plug and extends into the oil cavity along with the oil drain plug. The magnet is used to absorb metal debris in the oil cavity.

4. The cleaning machine according to claim 2, characterized in that: The high-pressure plunger pump also includes an oil dipstick. The top of the box body is provided with an oil dipstick opening. The oil dipstick passes through the oil dipstick opening and is fixedly connected to the box body.

5. The cleaning machine according to claim 1, characterized in that: The intelligent control box comprises a sensing device, which is arranged on the surface of the intelligent control box and is used for detecting and sensing the magnet to confirm that the oil drain plug leaves the box.

6. The cleaning machine according to claim 5, characterized in that The oil drain plug further comprises a sensing chip, which is arranged inside the oil drain plug and is used for sensing with the sensing device to confirm that the oil drain plug leaves the box.

7. The cleaning machine according to claim 1, characterized in that: The high-pressure plunger pump also includes an oil window mechanism, which includes an observation oil window and an oil window cover; the observation oil window is embedded in the side wall of the box body for observing the situation inside the box body; the oil window cover is arranged on the outside of the box body for covering the observation oil window.

8. The cleaning machine according to claim 1, characterized in that: The oil drain plug shell is a hollow columnar body, a cable hole is provided at the bottom of the oil drain plug shell, and the temperature sensor is arranged inside the oil drain plug shell at one end away from the cable hole; the intelligent control box also includes a signal line, which passes through the cable hole and is electrically connected to the temperature sensor.

9. The cleaning machine according to claim 1, characterized in that: The high-pressure plunger pump also includes a pump head assembly, which includes a water inlet joint and a water outlet joint. The pump head assembly is fixedly connected to the casing; the casing is a transmission part, which is used to convert the power output by the motor into an extrusion force to convert the medium flowing through the pump head assembly from low pressure to high pressure.

10. The cleaning machine according to claim 9, characterized in that The high-pressure plunger pump also includes a pressure gauge, which is arranged on the pump head assembly and is used to monitor the pressure of the fluid medium inside the pump head assembly.

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