Top-mounted liquid level floating ball controller

Abstract

The utility model discloses a top-mounted liquid level floating ball controller, and effectively solves the problem that adjustment cannot be carried out aiming at tank bodies with different depths. Which comprises a control head and a detection rod fixedly connected with the bottom of the control head, and is characterized in that the detection rod is sleeved with a floating ball capable of sliding up and down, the bottom of the detection rod is fixedly connected with a lower limiting block, the detection rod is provided with a mounting flange capable of sliding up and down, and the mounting flange is located above the floating ball. The detection rod is sleeved with an upper limiting block sliding up and down, and the upper limiting block is located between the installation flange and the floating ball. According to the utility model, the structure is ingenious, the use is convenient, through the arrangement of the limiting groove, the clamping block, the adjusting block and the like, the longer detection rod can be downwards compatible for tank bodies with different depths, the situation that the floating ball controller is frequently replaced due to different tank body depths is reduced, and the universality of the floating ball controller is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid level transmitters, in particular to a top-mounted liquid level float controller. Background Art

[0002] The float level transmitter consists of two parts: a liquid level sensor and a current converter. The float changes synchronously with the liquid level, controlling the reed switch to close and disconnect, so that the resistance in the sensor changes linearly. The converter then converts the resistance change into a 4-20mA standard current signal and superimposes the digital signal output. It can display, alarm and control the liquid level of the medium in an open, closed container or underground tank in the instrument control room. The detected medium can be conductive and non-conductive liquids such as water, oil, acid, alkali, industrial sewage, etc., and can overcome the influence of false liquid level caused by liquid foam. It is widely used in industries such as oil refining, chemical, papermaking, food, and sewage treatment.

[0003] A float type liquid level transmitter is disclosed in the Chinese utility model patent application number: CN201921236635.6, the structure of which includes a slide rod, a positioning rod, a positioning groove, etc. The slide rod and the positioning rod and other structures solve the problem that the upper limit block and the lower limit block of the existing float type liquid level transmitter are fixed on the measuring conduit by welding. When the zero level and the full level of the measured liquid change, the upper limit block and the lower limit block of the float type liquid level transmitter cannot change accordingly, resulting in inaccurate measurement results. This kind of float type liquid level transmitter also has the following problems:

[0004] 1. The length of the detection rod is fixed. When performing liquid level detection on tanks of different depths, detection rods of different lengths need to be replaced, which greatly limits the practicality of the entire device.

[0005] 2. When adjusting the upper and lower limit blocks, the entire transmitter needs to be disassembled or the liquid in the tank needs to be emptied and then adjusted manually, which is inconvenient and time-consuming and laborious. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a top-mounted liquid level float controller, which effectively solves the problems mentioned in the background technology.

[0007] The technical solution is that the utility model comprises a control head and a detection rod fixedly connected to the bottom of the control head, characterized in that a floating ball sliding up and down is sleeved on the detection rod, a lower limit block is fixedly connected to the bottom of the detection rod, a mounting flange sliding up and down is arranged on the detection rod, the mounting flange is located above the floating ball, an upper limit block sliding up and down is sleeved on the detection rod, and the upper limit block is located between the mounting flange and the floating ball;

[0008] The detection rod is provided with a vertical limit groove, and a plurality of blocks are arranged inside the limit groove, and gaps are formed between the plurality of blocks. An adjustment block is provided on the top of the mounting flange, and a protrusion is fixed on a side of the adjustment block close to the detection rod, and the protrusion is engaged in the gap. A stopper is fixed on the top of the mounting flange, and a connecting shaft is arranged on one side of the stopper. A vertical connecting hole is provided on the adjustment block, and the adjustment block is rotatably connected to the connecting shaft through the connecting hole, and the adjustment block and the stopper are connected by a spring.

[0009] Preferably, an arc-shaped adjusting caliper is fixedly connected to the top of the upper limit block, and the end of the adjusting caliper away from the upper limit block passes through the mounting flange. A sliding hole is provided at the axis of the mounting flange, and the mounting flange is connected to the detection rod through the sliding hole. An arc-shaped sliding groove is provided on one side of the sliding hole, and the adjusting caliper slides inside the sliding groove.

[0010] Preferably, a mounting hole matching the gap is provided on one side of the adjusting caliper, a vertical scale bar is provided on the other side of the adjusting caliper, and a handle is fixed on the top of the adjusting caliper.

[0011] Preferably, a cushion block is fixed to the bottom of the connecting shaft, a thread is formed on the top of the connecting shaft, and a nut is threadedly connected to the top of the connecting shaft.

[0012] Preferably, a vertical scale bar is provided on a side of the detection rod away from the limiting groove.

[0013] Preferably, the detection rod and the adjustment caliper are both made of stainless steel.

[0014] Preferably, the adjustment block is divided into a horizontal portion and a pressing portion, the horizontal portion is perpendicular to the convex block, and the pressing portion and the horizontal portion are inclined in the horizontal direction.

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

[0016] 1. Through the settings of limit grooves, card blocks and adjustment blocks, the longer detection rod can be downward compatible with tanks of different depths, reducing the frequent replacement of float controllers due to different tank depths, greatly improving the versatility of the float controller.

[0017] 2. By adjusting the caliper, slide groove, mounting hole and other settings, after the above-mentioned mounting flange is adjusted, the relative displacement value of the detection rod relative to the mounting flange is recorded according to the scale line. At this time, the relative position of the upper limit block and the mounting flange is adjusted according to the obtained relative displacement value, so as to realize the precise adjustment of the upper limit block without visual inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a stereogram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the limiting groove in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the regulating block in the utility model.

[0021] Figure 4 It is a structural schematic diagram of the mounting flange in the utility model.

[0022] Figure 5 It is a structural schematic diagram of the adjusting caliper in the utility model.

[0023] Figure 6 It is another side view of the detection rod in the utility model.

[0024] Explanation of the symbols in the schematic diagram:

[0025] 10. Control head; 20. Detection rod; 201. Limiting groove; 202. Block; 30. Mounting flange; 301. Sliding hole; 302. Sliding groove; 31. Adjusting block; 311. Bump; 312. Connecting hole; 32. Adjusting caliper; 321. Handle; 322. Mounting hole; 33. Stopper; 34. Connecting shaft; 40. Upper limit block; 50. Float; 60. Lower limit block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0027] Depend on Figure 1The utility model includes a control head 10 and a detection rod 20 fixedly connected to the bottom of the control head 10. A control device, such as a relay, a water pump or an alarm, is arranged inside the control head 10 to realize automatic control of the liquid level. A floating ball 50 that slides up and down is sleeved on the detection rod 20. The floating ball 50, as the main component of liquid level detection, moves up and down under the action of the buoyancy of the liquid. A lower limit block 60 is fixedly connected to the bottom of the detection rod 20. When the floating ball 50 falls to the position of the lower limit block 60 and contacts the lower limit block 60, the lower limit block 60 sends an alarm signal to the control head 10, indicating that the liquid height is lower than the minimum When a setting point is reached, water needs to be added to the inside. A mounting flange 30 that slides up and down is provided on the detection rod 20, and the mounting flange 30 is located above the float 50. The mounting flange 30 is fixed to the top of the water level detection tank in a top-mounted manner. An upper limit block 40 that slides up and down is sleeved on the detection rod 20, and the upper limit block 40 is located between the mounting flange 30 and the float 50. When the float 50 rises to the position of the upper limit block 40 and contacts the upper limit block 40, it indicates that the liquid height is higher than the highest setting point. At this time, the upper limit block 40 sends an alarm signal to the control head 10 to stop adding water to the inside.

[0028] refer to Figures 1 to 4 As shown, the existing float 50 controller usually adopts a fixed form for its mounting flange 30 and the detection rod 20, which is not convenient for detecting tanks of different depths, greatly limiting its practicality. The detection rod 20 is provided with a vertical limit groove 201, and a plurality of blocks 202 are arranged inside the limit groove 201, and a gap is formed between the plurality of blocks 202. An adjustment block 31 is arranged on the top of the mounting flange 30, and a protrusion 311 is fixed on a side of the adjustment block 31 close to the detection rod 20, and the protrusion 311 is clamped in the gap. A stopper 33 is fixed on the top of the mounting flange 30, and a connecting shaft 34 is arranged on one side of the stopper 33. A vertical connecting hole 312 is arranged on the adjustment block 31, and the adjustment block 31 is connected through the connecting hole 312 is rotatably connected to the connecting shaft 34, and the adjusting block 31 is connected to the stop block 33 through a spring. Through the settings of the limit groove 201, the block 202 and the adjusting block 31, the longer detection rod 20 can be downwardly compatible with the tank body of different depths, reducing the frequent replacement of the float 50 controller due to different tank body depths, and greatly improving the versatility of the float 50 controller; in use, before adjusting the mounting flange 30 according to different tank body depths, the adjusting block 31 is manually pressed to make the protrusion 311 disengage from the gap, and then the mounting flange 30 can be controlled to move upward or downward. A vertical scale bar is set on the side of the detection rod 20 away from the limit groove 201. When adjusting up and down, it is necessary to record the moving distance according to the scale line set on one side of the detection rod 20.

[0029] refer to Figure 1 , Figure 4 and Figure 5 As shown, in use, when the position of the mounting flange 30 changes, the relative distance between the upper limit block 40 and the mounting flange 30 changes accordingly. At this time, the position of the upper limit block 40 needs to be reset. At the same time, the upper limit block 40 is invisible inside the tank body. In the prior art, when adjusting the upper limit block 40, the liquid in the tank body needs to be drained, and then the tank body is opened to adjust the upper limit block 40, which is time-consuming and laborious; an arc-shaped adjusting caliper 32 is fixedly connected to the top of the upper limit block 40, and the end of the adjusting caliper 32 away from the upper limit block 40 passes through the mounting flange 30, and a sliding hole 301 is provided at the axis of the mounting flange 30, and the mounting flange 30 is sleeved on the detection rod 20 through the sliding hole 301, and an arc-shaped sliding groove 302 is provided on one side of the sliding hole 301. The adjusting caliper 32 slides inside the slide groove 302, and a mounting hole 322 matching the gap is provided on one side of the adjusting caliper 32, and a vertical scale bar is provided on the other side of the adjusting caliper 32. A handle 321 is fixed on the top of the adjusting caliper 32. By adjusting the caliper 32, the slide groove 302 and the mounting hole 322, after the above-mentioned mounting flange 30 is adjusted, the relative displacement value of the detection rod 20 relative to the mounting flange 30 is recorded according to the scale line. At this time, the relative position of the upper limit block 40 and the mounting flange 30 is adjusted according to the obtained relative displacement value, so as to realize precise adjustment of the upper limit block 40 in an invisible situation. It should be noted that the starting positions of the scale lines on the detection rod 20 and the scale lines of the adjusting caliper 32 are respectively above the lower limit block 60 and the upper limit block 40.

[0030] refer to Figure 4 As shown, when the user presses the adjustment block 31 to adjust the adjustment, when the bottom surface of the adjustment block 31 is completely in contact with the mounting flange 30, excessive friction may occur, making it difficult to press. A pad is fixed to the bottom of the connecting shaft 34, and a thread is provided on the top of the connecting shaft 34. A nut is threadedly connected to the top of the connecting shaft 34. The pad and the nut are arranged to reduce the friction between the adjustment block 31 and the mounting flange 30, and the threaded connection method can quickly limit the adjustment block 31.

[0031] Furthermore, since the float 50 controller needs to be detected according to different liquids, including corrosive liquids, in order to avoid corrosion of the float 50 controller during long-term use, the detection rod 20 and the adjustment caliper 32 are both made of stainless steel. By using stainless steel, the problem of corrosion can be reduced or even avoided.

[0032] refer to Figure 3As shown, during use, the different shapes of the adjustment block 31 will also affect the pressing force of the user. The adjustment block 31 is divided into a horizontal portion and a pressing portion. The horizontal portion is perpendicular to the protrusion 311, and the pressing portion and the horizontal portion are inclined in the horizontal direction. By setting the horizontal portion and the pressing portion, and by setting an inclined angle between the pressing portion and the horizontal portion, the user can save pressing force when pressing the adjustment block 31, thereby achieving the purpose of easy operation.

[0033] When the utility model is used:

[0034] First, when adjusting for different tank depths, the longer detection rod 20 is downwardly compatible with the shallower tank by adjusting the position of the mounting flange 30 on the detection rod 20. When adjusting, the adjustment block 31 is manually pressed to make the protrusion 311 out of the gap, and the mounting flange 30 can be controlled to move upward or downward;

[0035] Then, when the above-mentioned installation flange 30 is moved, the relative movement amount of the installation flange 30 needs to be recorded according to the scale lines on the detection rod 20;

[0036] Secondly, when the upper limit block 40 is adjusted under invisible conditions, the upper limit block 40 is adjusted according to the displacement of the mounting flange 30 recorded above, and the relative position relative to the top of the tank body is adjusted according to the scale line of the adjustment caliper 32;

[0037] Finally, after the mounting flange 30 and the upper limit block 40 are adjusted, the protrusion 311 on the control adjustment block 31 is simultaneously inserted into the gap between the mounting hole 322 and the clamping block 202 .

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A top-mounted liquid level float controller, comprising a control head (10), and a detection rod (20) fixedly connected to the bottom of the control head (10), characterized in that: The detection rod (20) is sleeved with a floating ball (50) that slides up and down, the bottom of the detection rod (20) is fixedly connected with a lower limit block (60), the detection rod (20) is provided with a mounting flange (30) that slides up and down, the mounting flange (30) is located above the floating ball (50), and the detection rod (20) is sleeved with an upper limit block (40) that slides up and down, and the upper limit block (40) is located between the mounting flange (30) and the floating ball (50); The detection rod (20) is provided with a vertical limit groove (201), a plurality of clamping blocks (202) are arranged inside the limit groove (201), and a gap is formed between the plurality of clamping blocks (202). An adjusting block (31) is arranged on the top of the mounting flange (30), a convex block (311) is fixed on a side of the adjusting block (31) close to the detection rod (20), and the convex block (311) is clamped in the gap. A stopper (33) is fixed on the top of the mounting flange (30), and a connecting shaft (34) is arranged on one side of the stopper (33). A vertical connecting hole (312) is provided on the adjusting block (31), and the adjusting block (31) is rotatably connected to the connecting shaft (34) through the connecting hole (312), and the adjusting block (31) and the stopper (33) are connected by a spring.

2. A top mounted liquid level float controller according to claim 1, characterized in that: An arc-shaped adjusting caliper (32) is fixedly connected to the top of the upper limit block (40); one end of the adjusting caliper (32) away from the upper limit block (40) passes through the mounting flange (30); a sliding hole (301) is provided at the axis of the mounting flange (30); the mounting flange (30) is sleeved on the detection rod (20) through the sliding hole (301); an arc-shaped sliding groove (302) is provided on one side of the sliding hole (301); and the adjusting caliper (32) slides inside the sliding groove (302).

3. A top mounted liquid level float controller according to claim 2, characterized in that: A mounting hole (322) matching the gap is provided on one side of the adjusting caliper (32), a vertical scale bar is provided on the other side of the adjusting caliper (32), and a handle (321) is fixed on the top of the adjusting caliper (32).

4. A top mounted liquid level float controller according to claim 1, characterized in that: A cushion block is fixed at the bottom of the connecting shaft (34), a thread is formed at the top of the connecting shaft (34), and a nut is threadedly connected to the top of the connecting shaft (34).

5. A top mounted liquid level float controller according to claim 1, characterized in that: A vertical scale bar is provided on one side of the detection rod (20) away from the limiting groove (201).

6. A top mounted liquid level float controller according to claim 1, characterized in that: The detection rod (20) and the adjustment caliper (32) are both made of stainless steel.

7. A top mounted liquid level float controller according to claim 1, characterized in that: The adjustment block (31) is divided into a horizontal portion and a pressing portion, the horizontal portion is perpendicular to the convex block (311), and the pressing portion and the horizontal portion are arranged obliquely in the horizontal direction.

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