A top-mounted float level transmitter

Abstract

The application relates to the technical field of float ball liquid level meters, and discloses a top-mounted float ball liquid level transmitter which comprises a main pipe, a first float ball and a second float ball; further comprises a position limiter which is rotationally arranged in a ring groove and can extend to the periphery of the main pipe; when the position limiter extends to the periphery of the main pipe, the position limiter is located between the first float ball and the second float ball, and the position limiter can abut against the first float ball and the second float ball; and the densities of the first float ball and the second float ball are adjustable. The first float ball, the second float ball and the position limiter are arranged on the main pipe; when the position limiter is rotationally arranged in the ring groove, the first float ball and the second float ball can measure two liquid levels; when the position limiter extends to the periphery of the main pipe, the first float ball and the second float ball can segmentally measure the liquid level of the same solution, the abrasion of the first float ball and the second float ball is reduced, and the practicability of the liquid level transmitter is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of float ball liquid level meter, and particularly relates to a top-mounted float ball liquid level transmitter. BACKGROUND

[0002] The top-mounted float ball liquid level transmitter is one of the core equipment for industrial liquid level measurement, and is widely applied to the fields of oil refining, chemical industry, pharmaceutical industry, food processing and sewage treatment, and is particularly suitable for liquid level monitoring of underground storage tanks, high-level water tanks or pressure vessels. The basic principle is that the magnetic float ball drives the on-off of the magnetic reed switch in the detection tube to change the resistance value and convert it into a standard current signal, so as to realize remote transmission and control of the liquid level.

[0003] In the working conditions of liquid-liquid extraction, oil-water separation and chemical phase separation reaction, two solutions need to be added in a container. In order to measure the liquid levels of the two solutions in the same container, a double-liquid level detection device appears on the market. For example, the utility model disclosed in the utility model with the announcement number CN207881800U sets two magnetic floating balls on the pipe body, and measures the liquid level height of the upper solution liquid surface and the liquid level of the two solution interfaces by using the two magnetic floating balls.

[0004] In the actual production process, the same container needs to store one solution sometimes and needs to store two solutions sometimes. If the type of the liquid level meter is replaced according to the number of solutions in the container, the labor cost and equipment cost will be increased. If only the above-mentioned double-liquid level detection liquid level meter is used, the wear of the floating balls will be increased, and the problem of mutual interference between the two floating balls will also occur, which affects the detection accuracy of the liquid level meter. SUMMARY

[0005] Therefore, the present application provides a top-mounted float ball liquid level transmitter which can switch functions according to the number of solutions in the container and improve the practicability of the liquid level transmitter.

[0006] The technical scheme of the present application is implemented as follows: the present application provides a top-mounted float ball liquid level transmitter, which comprises a main pipe, a first floating ball and a second floating ball, wherein the main pipe is vertically arranged; the first floating ball is arranged above the second floating ball, and both of them are slidingly arranged on the main pipe; further comprising a position limiter, a ring groove is formed on the circumferential side of the main pipe, the position limiter is rotationally arranged in the ring groove and can extend out of the circumferential side of the main pipe, when the position limiter extends out of the circumferential side of the main pipe, the position limiter is located between the first floating ball and the second floating ball, and the position limiter can abut against the first floating ball and the second floating ball; the densities of the first floating ball and the second floating ball are adjustable.

[0007] On the basis of the above technical scheme, preferably, the position limiter comprises a rotating ring and a height increasing part, the rotating ring is rotationally and slidingly arranged in the ring groove, the rotating shaft of the rotating ring is parallel to and spaced apart from the axis of the main pipe, and when the rotating ring rotates, part of the rotating ring protrudes from the circumferential side of the main pipe; the height increasing part is fixedly arranged on the rotating ring, and when the rotating ring rotates, the height increasing part can move out of the ring groove and protrude from the circumferential side of the main pipe.

[0008] On the basis of the above technical scheme, preferably, a fixer is further arranged on the main pipe, and when the first floating ball moves away from the position limiter and the second floating ball abuts against the position limiter, the fixer is clamped with the second floating ball.

[0009] On the basis of the above technical scheme, preferably, the fixer comprises a clamping rod, a driving rod and a spring, the clamping rod and the driving rod are both slidingly arranged on the main pipe, and the driving rod abuts against the clamping rod; the spring is arranged at the end of the driving rod away from the position limiter; a clamping cavity is arranged in the second floating ball, and when the first floating ball abuts against the position limiter, the clamping rod moves into the main pipe, and when the first floating ball moves away from the position limiter, the clamping rod is clamped with the clamping cavity.

[0010] On the basis of the above technical scheme, preferably, the sliding direction of the clamping rod is perpendicular to the sliding direction of the driving rod; a sliding groove is arranged in the clamping rod, and the lower end of the driving rod is in an inclined shape and slidingly arranged in the sliding groove.

[0011] On the basis of the above technical scheme, preferably, the first floating ball comprises a lower cover, an upper cover, a bolt and a plurality of counterweight rings, the upper cover is fixedly arranged on the lower cover by the bolt; the counterweight rings are arranged between the upper cover and the lower cover.

[0012] On the basis of the above technical scheme, preferably, the bolt comprises a round head bolt and a T-head bolt, a through hole is arranged in the upper cover, the T-head bolt and the round head bolt are both slidingly and rotationally arranged in the through hole, and the cross section of the through hole is the same as the cross section of the T-head bolt.

[0013] On the basis of the above technical scheme, preferably, the cross sections of the rotating ring and the main pipe are both circular, and the outer diameter of the rotating ring is the same as the outer diameter of the main pipe.

[0014] On the basis of the above technical scheme, preferably, the height increasing part is made of an elastic material, and in a natural state, the overall height of the height increasing part and the rotating ring is greater than the height of the ring groove.

[0015] Preferably, the lower end of the first floating ball is in arc shape and abuts against the top side of the height increasing part away from the one end of the main pipe.

[0016] The top-mounted floating ball liquid level transmitter has the following beneficial effects relative to the prior art:

[0017] (1) By arranging the first floating ball, the second floating ball and the stopper on the main pipe, when the stopper is rotated into the annular groove, the first floating ball and the second floating ball can measure the double liquid level, when the stopper extends out of the circumferential side of the main pipe, the first floating ball and the second floating ball can measure the liquid level of the same solution in sections, reducing the wear of the first floating ball and the second floating ball and improving the practicality of the liquid level transmitter.

[0018] (2) By arranging the fixer, when the liquid level is higher than the stopper, the fixer can limit the second floating ball, avoiding the shaking of the second floating ball and affecting the detection accuracy of the liquid level transmitter.

[0019] (3) By arranging the bolt to include the round head bolt and the T-head bolt, the first floating ball can be conveniently disassembled and assembled, improving the convenience of adjusting the density of the first floating ball. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 It is a front view of the top-mounted floating ball liquid level transmitter for detecting the double liquid level state.

[0022] Figure 2 It is a front view of the top-mounted floating ball liquid level transmitter for detecting the single liquid level state.

[0023] Figure 3 It is a perspective view of the stopper in the top-mounted floating ball liquid level transmitter.

[0024] Figure 4 It is a sectional view of the stopper in the top-mounted floating ball liquid level transmitter, showing the state that the stopper is rotated into the annular groove.

[0025] Figure 5 It is a sectional view of the stopper in the top-mounted floating ball liquid level transmitter, showing the state that the stopper extends out of the circumferential side of the main pipe.

[0026] Figure 6It is a sectional view at the first floating ball and the second floating ball in a top-mounted floating ball liquid level transmitter of the application.

[0027] Figure 7 It is a sectional view at the fixer in a top-mounted floating ball liquid level transmitter of the application, showing the state that the clamping rod is away from the clamping cavity.

[0028] Figure 8 It is a sectional view at the fixer in a top-mounted floating ball liquid level transmitter of the application, showing the state that the clamping rod is clamped with the clamping cavity.

[0029] Figure 9 It is a perspective view at the clamping rod and the driving rod in a top-mounted floating ball liquid level transmitter of the application.

[0030] Figure 10 It is a sectional view of the first floating ball in a top-mounted floating ball liquid level transmitter of the application.

[0031] Figure 11 It is an explosion view at the upper cover in a top-mounted floating ball liquid level transmitter of the application.

[0032] Wherein: 1, main pipe; 101, ring groove; 2, first floating ball; 21, lower cover; 22, upper cover; 23, bolt; 24, counterweight ring; 231, round head bolt; 232, T head bolt; 201, through hole; 3, second floating ball; 301, clamping cavity; 4, limiter; 41, rotating ring; 42, heightening part; 5, fixer; 51, clamping rod; 52, driving rod; 53, spring; 501, sliding groove. DETAILED DESCRIPTION

[0033] The technical solutions in the application will be described clearly and completely below in combination with the specific embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments. Based on the embodiments in the application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0034] The top-mounted floating ball liquid level transmitter of the application comprises a main pipe 1, a first floating ball 2, a second floating ball 3, a limiter 4 and a fixer 5. The first floating ball 2 and the second floating ball 3 are both magnetic floating balls. The cooperation of the two with a magnetic reed switch in the main pipe 1 can realize the measurement of the liquid surface position in a container and adapt to various use conditions of the container. The cooperation of the magnetic floating ball with the magnetic reed switch is the prior art.

[0035] The first floating ball 2 and the second floating ball 3 are both slidingly arranged on the main pipe 1. The first floating ball 2 is arranged above the second floating ball 3. A ring groove 101 is formed on the circumferential side of the main pipe 1. The limiter 4 is rotatably arranged in the ring groove 101. The limiter 4 can extend out of the circumferential side of the main pipe 1 when rotating.

[0036] As shown in Figure 1 , the main pipe 1 is vertically arranged and is installed on the top side of the container through a flange, at this time, the limiter 4 is rotated into the ring groove 101, the limiter 4 does not protrude from the peripheral side of the main pipe 1, the densities of the first floating ball 2 and the second floating ball 3 are different, so as to respectively float at the liquid surface of the upper solution and at the interface of the two solutions, and then the liquid levels of the two solutions are measured by using the first floating ball 2 and the second floating ball 3.

[0037] As shown in Figure 2 , the main pipe 1 is vertically arranged and is installed on the top side of the container through a flange, at this time, the limiter 4 protrudes from the peripheral side of the main pipe 1, the limiter 4 is located between the first floating ball 2 and the second floating ball 3, the densities of the first floating ball 2 and the second floating ball 3 are adjusted to be the same. When the liquid surface of the solution in the container is located below the limiter 4, the first floating ball 2 is abutted against the top side of the limiter 4 by its own gravity, and the second floating ball 3 moves up and down with the liquid surface of the solution, when the liquid surface of the solution is located above the limiter 4, the second floating ball 3 is abutted against the lower side of the limiter 4 by the buoyancy, and the first floating ball 2 moves up and down with the liquid surface, and the solution is measured by using the first floating ball 2 and the second floating ball 3.

[0038] In this segmented measurement process, the first floating ball 2 and the second floating ball 3 respectively measure different height ranges of the solution, so as to reduce the sliding length of the first floating ball 2 and the second floating ball 3 on the main pipe 1, thereby reducing the wear of the first floating ball 2 and the second floating ball 3 with the main pipe 1, and eliminating the mutual interference of the first floating ball 2 and the second floating ball 3, so as to improve the adaptability of the liquid level transmitter.

[0039] As a preferred embodiment, the limiter 4 comprises a swivel ring 41 and a height increasing part 42, as shown in Figure 3 , the swivel ring 41 is rotationally arranged in the ring groove 101, and the rotation axis of the swivel ring 41 is parallel to and spaced apart from the axis of the main pipe 1, that is, the swivel ring 41 is arranged eccentrically with the main pipe 1; preferably, the cross sections of the swivel ring 41 and the main pipe 1 are circular, and the outer diameter of the swivel ring 41 is the same as the outer diameter of the main pipe 1.

[0040] As shown in Figure 4 , by rotating the swivel ring 41, the swivel ring 41 can be rotated into the ring groove 101, and the peripheral side of the swivel ring 41 can be flush with the peripheral side of the main pipe 1, so that the first floating ball 2 and the second floating ball 3 can slide over the limiter 4 when sliding on the main pipe 1; as shown in Figure 5 , by rotating the swivel ring 41, part of the swivel ring 41 can be rotated out of the ring groove 101 and protrude from the peripheral side of the main pipe 1, so that the limiter 4 blocks the sliding of the first floating ball 2 and the second floating ball 3, and the first floating ball 2 and the second floating ball 3 cannot slide over the limiter 4 when sliding on the main pipe 1.

[0041] The height of the rotating ring 41 is less than the height of the ring groove 101, that is, the rotating ring 41 can slide in the ring groove 101 along the axial direction of the main pipe 1, and the raised portion 42 is fixedly arranged on the rotating ring 41, and the raised portion 42 rotates and slides with the rotating ring 41 and can move out of the ring groove 101 and extend out of the circumferential side of the main pipe 1.

[0042] As a preferred embodiment, the raised portion 42 is made of elastic material, and in the natural state, the overall height of the raised portion 42 and the rotating ring 41 is greater than the height of the ring groove 101, and when the raised portion 42 is compressed, the overall height of the raised portion 42 and the rotating ring 41 can be equal to the height of the ring groove 101, so that the raised portion 42 is rotated into the ring groove 101.

[0043] As shown in Figure 4 , when the rotating ring 41 is rotated into the ring groove 101, the raised portion 42 abuts against the inner top side of the ring groove 101, thereby avoiding the rotating ring 41 from shaking; as shown in Figure 5 , when the rotating ring 41 is partially rotated out of the ring groove 101, the raised portion 42 is located outside the ring groove 101, and the top side of the raised portion 42 is located above the inner top side of the ring groove 101, which also avoids the rotating ring 41 from shaking, thereby improving the position stability of the position limiter 4.

[0044] The lower end of the first floating ball 2 is arc-shaped, as shown in Figure 7 , when the rotating ring 41 is partially rotated out of the ring groove 101 and the raised portion 42 is located outside the ring groove 101, the first floating ball 2 abuts against the end of the top side of the raised portion 42 away from the main pipe 1, so that the position where the raised portion 42 abuts against the first floating ball 2 is located below the inner top side of the ring groove 101, and the position where the top side of the raised portion 42 is close to the main pipe 1 is located above the inner top side of the ring groove 101, thereby avoiding the rotating ring 41 from shaking.

[0045] When the liquid level of the same solution is measured, and the liquid surface of the solution is located above the position limiter 4, as shown in Figure 2 , the first floating ball 2 floats at the liquid surface of the solution, and the top side of the second floating ball 3 abuts against the bottom side of the position limiter 4. With the addition or consumption of the solution in the container, the solution inside will fluctuate, and the fluctuating solution will cause the second floating ball 3 to shake, thereby affecting the measurement accuracy of the liquid level transmitter.

[0046] Therefore, the fixer 5 is arranged on the main pipe 1, when the first floating ball 2 moves upward away from the top side of the position limiter 4 under the buoyancy, and the second floating ball 3 abuts against the bottom side of the position limiter 4, the fixer 5 can be clamped with the second floating ball 3, thereby avoiding the second floating ball 3 from shaking, and improving the measurement accuracy of the liquid level transmitter.

[0047] In a preferred embodiment, the retainer 5 includes a snap-fit ​​rod 51, a drive rod 52, and a spring 53. The snap-fit ​​rod 51 and the drive rod 52 are both slidably disposed on the main pipe 1, and their sliding directions are perpendicular to each other. The drive rod 52 and the snap-fit ​​rod 51 are engaged in abutment, and the spring 53 is abutted at the end of the drive rod 52 away from the limiter 4.

[0048] The second float 3 has a locking cavity 301 inside, such as Figure 7 As shown, when the first float 2 abuts against the top side of the limiter 4, the limiter 4 applies downward pressure to the top of the drive rod 52, causing the spring 53 to contract and the drive rod 52 to move downward, thereby driving the locking rod 51 to move into the main pipe 1, so that it will not lock into the locking cavity 301; as Figure 8 As shown, when the solution level rises and the first float 2 moves away from the limiter 4, the drive rod 52 loses the pressure of the first float 2, and the spring 53 pushes the drive rod 52 upward, thereby causing one end of the locking rod 51 to extend out of the periphery of the main pipe 1 and lock with the locking cavity 301, thereby limiting the second float 3 and preventing the second float 3 from shaking significantly.

[0049] The locking rod 51 has a sliding groove 501, which is a rectangular through hole. The lower end of the drive rod 52 is inclined and slides within the sliding groove 501. Figure 9 As shown, when the drive rod 52 moves upward, it can cause the locking rod 51 to slide to the right, thereby allowing the locking rod 51 to extend into the locking cavity 301; when the drive rod 52 moves downward, it can cause the locking rod 51 to slide to the left, returning to the original position. Figure 9 The position shown allows the locking lever 51 to move into the interior of the main tube 1, thereby achieving the driving engagement between the drive lever 52 and the locking lever 51.

[0050] The first float 2 includes a lower cover 21, an upper cover 22, bolts 23, and multiple counterweight rings 24, such as Figure 10 As shown, the upper cover 22 is fixedly mounted on the lower cover 21 by bolts 23, and the counterweight ring 24 is disposed between the upper cover 22 and the lower cover 21. By adjusting the number of counterweight rings 24, the weight of the first float 2 is changed, thereby changing the density of the first float 2, so that the first float 2 can float on the surface of solutions with different densities.

[0051] The upper cover 22 has a through hole 201, and the lower cover 21 has a threaded hole. The bolt 23 passes through the through hole 201 and is screwed into the threaded hole, so that the bolt head of the bolt 23 abuts against the side of the upper cover 22 away from the lower cover 21, thereby fixing the upper cover 22 and the lower cover 21.

[0052] like Figure 11As shown, bolt 23 includes a round head bolt 231 and a T-head bolt 232. The head of the T-head bolt 232 is oblong, and the head of the round head bolt 231 is round. The screws of both the T-head bolt 232 and the round head bolt 231 are slidably and rotatably disposed within the through hole 201. The cross-section of the through hole 201 is the same as the cross-section of the T-head bolt 232, both being oblong, allowing the head of the T-head bolt 232 to pass through the through hole 201. When the T-head bolt 232 rotates to a position coinciding with the through hole 201, the upper cover 22 and the lower cover 21 can be disassembled simply by unscrewing the round head bolt 231, thereby improving the disassembly and assembly efficiency of the upper cover 22 and the lower cover 21, and further improving the density adjustment efficiency of the first float 2.

[0053] In order to quickly adjust the density of the second float 3, the structure of the second float 3 can be the same as that of the first float 2.

[0054] The method of using the top-mounted float level transmitter of the present invention is as follows:

[0055] like Figure 1 As shown, when measuring the liquid level of two solutions with different densities, the density of the first float 2 and the second float 3 is first adjusted by changing the number of counterweight rings 24 so that the first float 2 can float on the surface of the upper solution and the second float 3 can float at the interface of the two solutions. Then, the rotating ring 41 is rotated to move the limiter 4 into the ring groove 101. Finally, the main pipe 1 is installed on the container to be measured.

[0056] like Figure 2 As shown, when measuring the liquid level of a solution, the density of the first float 2 and the second float 3 is first adjusted by changing the number of counterweight rings 24 so that both the first float 2 and the second float 3 can float on the surface of the solution. Then, the first float 2 is slid above the limiter 4 and the second float 3 is slid below the limiter 4. Next, the rotating ring 41 is rotated so that the part of the rotating ring 41 and the raised part 42 are moved out of the ring groove 101 and extend out of the periphery of the main pipe 1. Finally, the main pipe 1 is installed on the container to be measured.

[0057] To improve the ease of operation of the level gauge, a corresponding rotation drive device can be installed in the main pipe 1 to realize the automatic rotation of the rotating ring 41. Similarly, the density adjustment of the first float 2 and the second float 3 can also be achieved by adding or draining liquid into the float, so as to cooperate with equipment such as water pumps to realize the automatic adjustment of the density of the first float 2 and the second float 3.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A top-mounted float level transmitter, comprising a main pipe (1), a first float (2), and a second float (3), wherein the main pipe (1) is vertically arranged; the first float (2) is arranged above the second float (3), and both are slidably arranged on the main pipe (1); Its features are: It also includes a limiter (4), and an annular groove (101) is provided on the periphery of the main pipe (1). The limiter (4) is rotatably disposed in the annular groove (101) and can extend out of the periphery of the main pipe (1). When the limiter (4) extends out of the periphery of the main pipe (1), the limiter (4) is located between the first float (2) and the second float (3), and the limiter (4) can abut against the first float (2) and the second float (3). The densities of the first float (2) and the second float (3) are adjustable; The limiter (4) includes a rotating ring (41) and an extension part (42). The rotating ring (41) is rotatably and slidably disposed in the annular groove (101). The rotation axis of the rotating ring (41) is parallel to and spaced apart from the axis of the main pipe (1). When the rotating ring (41) rotates, a portion of the rotating ring (41) extends out of the circumference of the main pipe (1). The extension part (42) is fixedly disposed on the rotating ring (41). When the rotating ring (41) rotates, the extension part (42) can move out of the annular groove (101) and extend out of the circumference of the main pipe (1). It also includes a retainer (5), which is disposed on the main tube (1). When the first float (2) is away from the limiter (4) and the second float (3) is against the limiter (4), the retainer (5) is engaged with the second float (3). The fixing device (5) includes a snap-fit ​​rod (51), a drive rod (52) and a spring (53). The snap-fit ​​rod (51) and the drive rod (52) are both slidably disposed on the main tube (1), and the drive rod (52) abuts against the snap-fit ​​rod (51). The spring (53) abuts against the end of the drive rod (52) away from the limiter (4). The second float (3) has a snap-fit ​​cavity (301). When the first float (2) abuts against the limiter (4), the snap-fit ​​rod (51) moves into the main tube (1). When the first float (2) moves away from the limiter (4), the snap-fit ​​rod (51) snaps against the snap-fit ​​cavity (301).

2. The top-mounted float level transmitter as described in claim 1, characterized in that: The sliding direction of the latching rod (51) is perpendicular to the sliding direction of the driving rod (52); a groove (501) is provided in the latching rod (51), and the lower end of the driving rod (52) is inclined and slidably disposed in the groove (501).

3. The top-mounted float level transmitter as described in claim 1, characterized in that: The first float (2) includes a lower cover (21), an upper cover (22), a bolt (23) and a plurality of counterweight rings (24). The upper cover (22) is fixedly mounted on the lower cover (21) by the bolt (23). The counterweight rings (24) are disposed between the upper cover (22) and the lower cover (21).

4. The top-mounted float level transmitter as described in claim 3, characterized in that: The bolt (23) includes a round head bolt (231) and a T-head bolt (232). The upper cover (22) has a through hole (201). The T-head bolt (232) and the round head bolt (231) are both slidably and rotatably disposed in the through hole (201), and the cross-section of the through hole (201) is the same as the cross-section of the T-head bolt (232).

5. A top-mounted float level transmitter as described in claim 1, characterized in that: The cross-sections of the rotating ring (41) and the main pipe (1) are both circular, and the outer diameter of the rotating ring (41) is the same as the outer diameter of the main pipe (1).

6. A top-mounted float level transmitter as described in claim 5, characterized in that: The heightening part (42) is made of elastic material. In its natural state, the overall height of the heightening part (42) and the rotating ring (41) is greater than the height of the ring groove (101).

7. A top-mounted float level transmitter as described in claim 6, characterized in that: The lower end of the first float (2) is arc-shaped and abuts against the top side of the raised part (42) away from the main tube (1).

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