Liquid level detection device with adjustable liquid level detection range

Abstract

The utility model relates to a liquid level detection device with an adjustable liquid level detection range, which comprises a shell, a control panel arranged in the shell, a communication line arranged outside the shell and penetrating through the shell to be in signal transmission with the control panel, at least one group of fixed liquid level lines arranged on the shell, and a movable adjusting assembly, the movable adjusting assembly penetrates through the shell and can move in the shell, a lowest liquid level line is arranged on the movable adjusting assembly, and sensors for detecting liquid levels are arranged on the fixed liquid level line and the lowest liquid level line. The height difference between the lowest liquid level line and the fixed liquid level line is adjusted through the extending distance of the movable adjusting assembly in the shell so as to adjust the detection range of the liquid level detection device. The low liquid level sensor is arranged on the movable face shell, the high liquid level sensor is fixed to the shell, the detection range of the liquid level detection device can be adjusted by pulling down the movable face shell, the liquid level capacity is improved, the stroke block conducts stroke limiting on movement of the movable face shell, and the situation that the detection device is damaged due to the fact that the movable face shell is pulled down excessively is avoided.

Description

Technical Field

[0001] The utility model relates to the field of liquid level detection devices, in particular to a liquid level detection device with adjustable liquid level detection range. Background Art

[0002] The liquid level detection and its protection device is composed of a liquid container, a liquid level detection sensor, and a water pump. Among them, the high liquid level and low liquid level ranges of the traditional liquid level detection sensor are fixed. When the liquid level in the device is higher than the high liquid level, the water pump is in the pumping state. When the liquid level is lower than the low liquid level, the water pump is in the state of stopping pumping. However, once the height of the user's liquid container increases, it means that the inflow liquid flow rate will increase. At this time, the traditional liquid level detection sensor will have the liquid level always in the high liquid level state, that is, the pumping pump will always be in the high power consumption state of pumping. This is not beneficial to the life of the water pump and is not beneficial to power consumption control.

[0003] Chinese Patent Publication No. CN213985308U relates to a liquid level detection device with adjustable depth, including a guide rod, a suspension plate, a bottom plate, a floating plate, and a controller. Among them, the suspension plate and the bottom plate are both flat plates and are parallel to each other. The two ends of the guide rod perpendicular to the suspension plate and the bottom plate are respectively fixedly connected to the suspension plate and the bottom plate. The bottom plate is a heavy material that can sink to the bottom of the liquid, and the floating plate is a light material that can float on the liquid surface. A through hole is opened in the middle of the floating plate, and the guide rod passes through this through hole. After the bottom plate sinks into the liquid, the floating plate can move up and down along the guide rod under the action of the liquid surface. On the side of the suspension plate facing the floating plate, there is a distance sensor pointing to the floating plate along the direction of the guide rod. The distance sensor is electrically connected to the controller, and the length of the guide rod is adjustable. Although this patent records that the height of the liquid level detection device is adjustable, it is adjusted by the floating plate, and the floating plate floats with the change of the liquid height, and the heavy object at its bottom makes the detection device inconvenient to install and use. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that the high liquid level and low liquid level ranges of the traditional liquid level detection sensor are fixed. When the liquid level in the device is higher than the high liquid level, the water pump is in the pumping state. When the liquid level is lower than the low liquid level, the water pump is in the state of stopping pumping. In view of the above defects of the prior art, a liquid level detection device with adjustable liquid level detection range is provided.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A liquid level detection device with an adjustable detection range is constructed, which includes a housing and a control board arranged inside the housing. A communication line is arranged outside the housing and passes through the housing to transmit signals to the control board. At least one group of fixed liquid level lines is arranged on the housing. The liquid level detection device further includes a movable adjustment component. The movable adjustment component passes through the housing and can move inside the housing. A lowest liquid level line is arranged on the movable adjustment component. Sensors for detecting the liquid level are arranged on both the fixed liquid level line and the lowest liquid level line. The height difference between the lowest liquid level line and the fixed liquid level line is adjusted by the extension distance of the movable adjustment component inside the housing to adjust the detection range of the liquid level detection device.

[0007] Preferably, an insertion hole is arranged on the housing. The movable adjustment component passes through the insertion hole and can move inside the insertion hole. The movable adjustment component includes a fixed bracket arranged inside the housing and a movable surface shell that moves on the fixed bracket. The lowest liquid level line is placed on the movable surface shell, and the movement of the movable surface shell adjusts the detection range of the liquid level detection device.

[0008] Preferably, the movable adjustment component further includes a travel block connected to the movable surface shell. The travel block moves inside the housing to limit the movement stroke of the movable surface shell, thereby limiting the detection range of the liquid level detection device within the movement stroke range.

[0009] Preferably, a sliding groove is arranged on the fixed bracket. The travel block is provided with a sliding arm corresponding to the sliding groove. The sliding arm moves in the sliding groove, and the length of the sliding groove is the movement stroke of the travel block.

[0010] Preferably, the travel block further includes a fixed arm connecting the sliding arm. A ratchet group is arranged on the contact surface between the fixed arm and the fixed bracket. The adjustment of the liquid level is fixed through the ratchet group.

[0011] Preferably, a suspended arm connected to one of the fixed arms is arranged on the travel block. The ratchet group includes a ratchet arranged at the bottom of the fixed bracket and a ratchet arranged on the suspended arm.

[0012] Preferably, the movable adjustment component further includes a push-pull part. The movable adjustment component is driven to move through the push-pull part, and a scale line is arranged on the movable adjustment component.

[0013] Preferably, a wire fixing seat is further arranged inside the movable adjustment component. A connecting wire for connecting the sensor and the control board is arranged on the wire fixing seat, and the wire fixing seat and the connecting wire move with the movement of the movable adjustment component.

[0014] Preferably, the housing includes a detachable upper housing and a lower housing. Installation grooves are arranged at both ends of the upper housing, and the liquid level detection device is installed through the installation grooves.

[0015] The beneficial effects of the present utility model are as follows: By placing the low-level sensor on the movable surface shell and fixing the high-level sensor on the shell, pulling down the movable surface shell can adjust the detection range of the liquid level detection device, increase the liquid level capacity, and the travel block limits the travel of the movable surface shell to prevent the detection device from being damaged due to excessive pulling down of the movable surface shell. The ratchet group provided between the fixed bracket and the travel block also increases the damping feeling of the movement of the movable surface shell, and can be fixed at any position, improving the control feel during movement and better maintaining the adjusted position. At the same time, the two sets of sliding arms are limited on the fixed bracket, making the movement of the movable surface shell smoother and preventing abnormal left and right swinging states. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0017] Figure 1 Schematic perspective view of the liquid level detection device of the preferred embodiment of the present utility model;

[0018] Figure 2 Exploded structure schematic diagram of the liquid level detection device of the preferred embodiment of the present utility model;

[0019] Figure 3 Schematic diagram of the maximum range structure of the liquid level detection device of the preferred embodiment of the present utility model;

[0020] Figure 4 Schematic cross-sectional view of the liquid level detection device of the preferred embodiment of the present utility model;

[0021] Figure 5 Schematic cross-sectional view of the maximum range of the liquid level detection device of the preferred embodiment of the present utility model;

[0022] Figure 6 Schematic perspective view of the movable adjustment assembly of the preferred embodiment of the present utility model;

[0023] Figure 7 Schematic diagram of the lowest structure of the movable surface shell of the preferred embodiment of the present utility model;

[0024] Figure 8 Schematic diagram of the connection structure of the fixed bracket, the wire fixing seat and the travel block of the preferred embodiment of the present utility model;

[0025] Figure 9 Schematic axonometric view of the fixed bracket of the preferred embodiment of the present utility model;

[0026] Figure 10 This is a three-dimensional structural schematic diagram of the stroke block of a preferred embodiment of the present utility model. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be described clearly and completely below. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] A liquid level detection device with adjustable liquid level detection range in a preferred embodiment of the present utility model; as Figure 1-5 shown, it includes a housing 10, and a communication line 50 connected to one end of the housing through a locking screw 40. An alarm liquid level line 301 and a maximum liquid level line 302 are provided on the housing. The maximum liquid level line is closer to the communication line end. A liquid level adjustment component 20 is also connected to the housing 10. The lowest liquid level line 300 is provided at the lowermost end of the liquid level adjustment component. By adjusting the component, the distance between the lowest liquid level line and the alarm liquid level line and the maximum liquid level line is changed to achieve adjustable height of the detected liquid level.

[0029] Specifically, as Figure 2 and Figures 6-10 shown, the housing 10 includes a detachable upper housing 100 and a lower housing 101. A control board 60 connected to the liquid level adjustment component is arranged inside the upper housing and the lower housing. The control board is connected to the communication line and conducts signal transmission. The liquid level control component is connected to the control board through a connecting line 201 and conducts transmission of detected liquid level information. Among them, the lowest liquid level line, the alarm liquid level line and the maximum liquid level line are all used to detect the liquid level height through sensors and transmit the detection signals to the control board through the connecting lines. The liquid level adjustment component 20 includes a fixed bracket 203 arranged inside the housing, and a movable surface shell 200 that can slide relative to the fixed bracket. A liquid level scale 2001 is arranged on the main part of the movable surface shell. A pushing and pulling part 2000 is arranged at the end of the movable surface shell. The upper housing is provided with an insertion slot 103 corresponding to the pushing and pulling part. The movable surface shell passes through the insertion slot and the pushing and pulling part is placed outside the housing, while the liquid level scale is placed inside the housing. When the movable surface shell is pulled, the height of the movable surface shell is changed to lower the lowest liquid level line. At this time, part of the liquid level scale is exposed outside the housing. At this time, since the lowest liquid level line is lowered, the heights of the alarm liquid level line and the maximum liquid level line are increased, and the corresponding adjusted liquid level situation can also be intuitively seen through the liquid level scale line.

[0030] Furthermore, as Figures 6-10As shown, the liquid level adjustment assembly 20 further includes a travel block 204 connected to the movable surface shell. A connection hole 2004 is provided at the bottom of the movable surface shell. The travel block is provided with a connection block 2040 corresponding to the connection hole, and locking holes 2003 are correspondingly provided on the movable surface shell and the travel block to connect and lock the movable surface shell and the travel block. To facilitate the sliding of the movable surface shell on the fixed bracket after connecting the travel block, sliding grooves 2030 are provided on both sides of the fixed bracket. The connection of the travel block and the movable surface shell is placed on the sliding groove. Since the travel block is located between the fixed bracket and the shell, when the travel block moves to the end, the movable surface shell has the maximum and minimum extended lengths, thereby realizing the limit of the sliding of the movable surface shell and corresponding to the adjustment range of its liquid level height.

[0031] Further, as Figures 9-10 shown, a ratchet 2032 is provided at the bottom of the fixed bracket 203. Multiple groups of ratchets are arranged along the length direction of the bottom of the fixed bracket. The travel block 204 includes two sliding arms 2041 and a connecting arm 2042 connecting the ends of the sliding arms. The sliding arms slide in the sliding groove to limit the movement of the movable surface shell. The connection block 2040 and the locking hole 2004 are both located at the upper end of the sliding arm 2041. To increase the feel during sliding, a suspension arm 2043 is provided on one group of connecting arms. The suspension arm is also provided with a ratchet 2032 corresponding to the bottom of the fixed bracket. The feel of the sliding of the movable bracket is maintained by the sliding between the two groups of ratchets, and the locking between the ratchets can also hold the movable position. The adjustment process has a damping feeling and a better adjustment feel.

[0032] Further, as Figure 4 and Figure 8 shown, due to the movement of the movable panel, a wire fixing seat 202 is provided between the movable surface shell 200 and the fixed bracket 203. A card slot 2002 is provided at the bottom of the movable panel. A card block 2020 is correspondingly provided on the wire fixing seat to fixedly connect the wire fixing seat and the movable surface shell. The connecting wire 201 is fixed on the wire fixing seat and moves with the movement of the movable surface shell.

[0033] Further, as Figures 1-2 shown, to facilitate the installation of the liquid level detection device, installation grooves 102 are provided at both ends of the upper shell. The liquid level detection device can be fixed by placing a binding strap at the installation groove, or other methods can be used to fix the liquid level detection device through the installation groove, which all fall within the protection scope of the present utility model.

[0034] The liquid level detection sensor has a simple dovetail design. The sensor for high liquid level detection is installed on the fixed housing 10, while the sensor for low liquid level detection is installed on the movable surface housing 200. When the height of the user's container increases or the liquid inlet flow rate is large, the user can pull down the sliding surface housing according to actual needs, so that the detection range of the low liquid level remains unchanged, and the detection range of the high liquid level is increased, that is, the liquid capacity is increased, and the water pumping starts only when the liquid level reaches the high liquid level detection line, thus ensuring that the water pump does not always stay in the water pumping state, which is beneficial to the service life of the water pump and also beneficial to power consumption control.

[0035] It should be understood that the present utility model is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A liquid level detection device with an adjustable liquid level detection range, comprising a housing, and a control board arranged in the housing, a communication line passing through the housing and transmitting signals with the control board is arranged outside the housing, and at least one set of fixed liquid level lines is arranged on the housing, characterized in that: The liquid level detection device also includes a movable adjustment component, which passes through the shell and can move within the shell. A minimum liquid level line is arranged on the movable adjustment component. Sensors for detecting the liquid level are arranged on the fixed liquid level line and the minimum liquid level line. The height difference between the minimum liquid level line and the fixed liquid level line is adjusted by the extension distance of the movable adjustment component in the shell to adjust the detection range of the liquid level detection device.

2. The liquid level detection device according to claim 1, characterized in that: The shell is provided with an insertion hole, and the movable adjustment component passes through the insertion hole and can move in the insertion hole. The movable adjustment component includes a fixed bracket arranged in the shell, and a movable surface shell that moves on the fixed bracket. The lowest liquid level line is placed on the movable surface shell, and the movement of the movable surface shell adjusts the detection range of the liquid level detection device.

3. The liquid level detection device according to claim 2, characterized in that: The movable adjustment component also includes a travel block connected to the movable surface shell, and the travel block moves in the shell to limit the moving stroke of the movable surface shell, thereby limiting the detection range of the liquid level detection device to within the moving stroke range.

4. The liquid level detection device according to claim 3, characterized in that: The fixed bracket is provided with a sliding groove, and the travel block is provided with a sliding arm corresponding to the sliding groove. The sliding arm moves in the sliding groove, and the length of the sliding groove is the moving stroke of the travel block.

5. The liquid level detection device according to claim 4, characterized in that: The travel block also includes a fixed arm connecting the sliding arm, and a ratchet group is provided on the contact surface between the fixed arm and the fixed bracket, and the liquid level is adjusted and fixed by the ratchet group.

6. The liquid level detection device according to claim 5, characterized in that: The travel block is provided with a suspended arm connected with one set of fixed arms, and the ratchet group comprises a ratchet arranged at the bottom of the fixed bracket and a ratchet arranged on the suspended arm.

7. The liquid level detection device according to any one of claims 1 to 6, characterized in that: The movable adjustment component also includes a push-pull portion, which drives the movable adjustment component to move, and scale lines are arranged on the movable adjustment component.

8. The liquid level detection device according to claim 7, characterized in that: A wire fixing seat is also arranged in the movable adjustment component, and a connecting wire for connecting the sensor and the control board is arranged on the wire fixing seat, and the wire fixing seat and the connecting wire move with the movement of the movable adjustment component.

9. The liquid level detection device according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing which are detachably connected. Both ends of the upper housing are provided with mounting grooves, and the liquid level detection device is mounted through the mounting grooves.

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