A float ball sorting system and a sorting method for producing a float ball liquid level switch

Abstract

The present invention provides a float ball sorting system and a sorting method for the production of float ball liquid level switches, and belongs to the field of sensor production technology. The conveyor belt is controlled to move slowly, and the float ball is set on the hook section at the feeding section. The float ball with a weight less than the standard float ball weight range is separated from the restriction of the hook section by the limit gate near the head end of the detection section, and enters the underweight storage cavity with the guidance of the liquid flow; the float ball within the guaranteed float ball weight range is separated from the restriction of the hook section by the limit gate near the end of the detection section, and enters the qualified storage cavity with the guidance of the liquid flow; the float ball with a weight greater than the standard float ball weight range is separated from the hook section due to the long distance between the hook section and the liquid surface, and enters the overweight storage cavity with the guidance of the liquid flow; the float balls in the underweight storage cavity, the qualified storage cavity and the overweight storage cavity are collected separately continuously or in different time periods, and the sorting of the float balls is completed. The present invention has the advantages of high efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of sensor production, and relates to a floating ball sorting system and sorting method for the production of floating ball liquid level switches. Background Art

[0002] The structure and principle of a floating ball liquid level switch are as follows: One or more magnetic reed switches are arranged in a closed metal or plastic tube, and then the tube penetrates through one or more floating rings that are hollow inside and are equipped with ring magnets. By using a fixing ring, the floating ball and the magnetic reed switch are controlled to be in relevant positions, so that the floating ball floats up and down within a certain range. The magnet inside the floating ball is used to attract the contacts of the magnetic reed switch, generating on and off actions for liquid level control or indication. It can be seen from this that the accuracy of its "floating ring" (i.e., the floating ball) directly affects the accuracy of the floating ball liquid level switch. A perforation is provided in the middle of the tubular float with an internal magnetic ring, and this perforation is used to cooperate with the tube with a magnetic reed switch. The float itself is formed by injection molding, and factors such as injection pressure cause individual differences in the weight of the float. It is necessary to select floats within a certain weight range, and floats outside or below this range should be removed. Summary of the Invention

[0003] The purpose of the present invention is to provide a floating ball sorting system for the production of floating ball liquid level switches in view of the above problems existing in the prior art. The technical problem to be solved by the present invention is how to improve the sorting efficiency.

[0004] The purpose of the present invention can be achieved by the following technical solutions: A floating ball sorting system for the production of floating ball liquid level switches, the floating ball includes a columnar body, and a perforation is provided in the middle of the body. The floating ball sorting system is characterized in that it includes a frame, a conveyor belt, and a sorting water tank. A number of carriers are arranged at equal intervals on the conveyor belt. The conveyor belt includes a loading section and a detection section. The carrier includes an extension rod horizontally fixed on one side of the conveyor belt and a mounting rod rotatably connected to the extension rod. The mounting rod includes a rotating section parallel to the extension rod, a hanging section perpendicular to the rotating section, and a hook section fixed at the lower end of the hanging section. The state of each mounting rod on the conveyor belt under the action of gravity is that the hanging section is vertically downward and the hook section is vertically upward;

[0005] The hook section is used to be adapted to the perforation, and the ratio of the length of the hook section to the length of the perforation is 0.2 - 0.6;

[0006] The sorting water tank includes a detection chamber close to the conveyor belt and a sorting chamber far from the conveyor belt. Two partition plates are arranged in the sorting chamber, and the two partition plates divide the sorting chamber into an underweight storage chamber, a qualified storage chamber, and an overweight storage chamber. Sorting plates extending to the liquid level of the detection chamber are respectively connected to the two partition plates. A gap allowing the hanging section to pass through is reserved between the inner end of the sorting plate and the side wall of the detection chamber. A limiting door located above the hook section is provided on the sorting plate;

[0007] The sorting chamber is filled with a functional liquid. The head end of the detection section is higher than the tail end. The floating ball at the detection section partially protrudes above the liquid level of the functional liquid, and the floating ball at the detection section is in a suspended state.

[0008] Furthermore, the functional liquid is water or a non-saturated brine mixture.

[0009] Furthermore, there is a gap between the partition plate and the bottom of the sorting water tank. A water pump is arranged at the bottom of the sorting chamber. The water inlet end of the water pump is located in the sorting chamber, and the water outlet end of the water pump is located at the bottom of the detection chamber.

[0010] Furthermore, a guiding plate is arranged between the detection chamber and the sorting chamber. The side of the guiding plate close to the detection chamber extends below the liquid level of the detection chamber.

[0011] Furthermore, a number of anti-rolling plates are arranged in the middle and lower part of the detection chamber. The anti-rolling plates are of a mesh structure, and the water outlet end of the water pump is located below the lowermost anti-rolling plate.

[0012] Furthermore, a water guiding plate is arranged on the sorting water tank near the end of the detection section.

[0013] Furthermore, the limiting height of the limiting door is adjustable.

[0014] Furthermore, the detection section forms an angle of 2-6° with the horizontal plane, and the angle between the detection section and the horizontal plane is adjustable.

[0015] A floating ball sorting method, characterized by comprising the following steps:

[0016] A. Modulate the density of the functional liquid so that a floating ball of standard weight is in a floating state with part of it exposed above the liquid level in the detection chamber; start the water pump to make the liquid in the detection chamber flow horizontally to the sorting chamber from the guiding plate, and control the total amount of liquid in the sorting water tank so that the liquid depth in the sorting chamber is about half of the liquid depth in the detection chamber;

[0017] B. Debugging, adjust the limiting height of the limiting door so that a floating ball of standard weight threaded on the hook section can pass through the limiting door near the head end of the detection section but cannot pass through the limiting door near the tail end of the detection section; adjust the angle between the detection section and the horizontal plane so that the distance between the top of the hook section on the carrier at the lowest position of the detection section and the liquid level is greater than the height of the floating ball;

[0018] C. Control the conveyor belt to move slowly. At the feeding section, sleeved the floating balls on the hook section. The floating balls with weights less than the standard floating ball weight range are affected by the limit gate near the head of the detection section and are separated from the hook section, and enter the underweight storage cavity under the guiding action of the liquid flow; the floating balls within the standard floating ball weight range are affected by the limit gate near the end of the detection section and are separated from the hook section, and enter the qualified storage cavity under the guiding action of the liquid flow; the floating balls with weights greater than the standard floating ball weight range are separated from the hook section due to the relatively large distance between the hook section and the liquid surface, and enter the overweight storage cavity under the guiding action of the liquid flow.

[0019] D. Continuously or at intervals, separately collect the floating balls in the underweight storage cavity, the qualified storage cavity, and the overweight storage cavity, and thus complete the sorting of the floating balls.

[0020] Since the floating balls are formed by a mold, and under the action of the foaming pressure, the outer contours of the floating balls have extremely small differences. In this solution, it is only necessary to detect whether their weights meet the standards. The traditional method of weighing one by one not only has low efficiency but also is difficult to be commonly used for floating balls of different specifications. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of this sorting system.

[0022] Figure 2 is a three-dimensional structural diagram of the detection section and the sorting water tank.

[0023] Figure 3 is a cross-sectional view of the sorting water tank (the dotted line indicates the liquid level).

[0024] Figure 4 is a schematic diagram of the states of the same floating ball at different positions in the detection section (the dotted line indicates the liquid level).

[0025] Figure 5 is a schematic diagram of the states of floating balls with different weights at the same position in the detection section (the dotted line indicates the liquid level).

[0026] Figure 6 is a schematic structural diagram of the conveyor belt and the carrier.

[0027] Figure 7 is a schematic diagram of the states of floating balls with the same weight in the detection section (the dotted line indicates the liquid level).

[0028] Figure 8 is a schematic structural diagram of the floating ball.

[0029] In the figure, 11 is the main body; 12 is the perforation; 2 is the frame; 3 is the conveyor belt; 31 is the loading section; 32 is the detection section; 4 is the sorting water tank; 41 is the detection chamber; 42 is the partition board; 43 is the cavity for storing underweight objects; 44 is the cavity for storing qualified objects; 45 is the cavity for storing overweight objects; 46 is the sorting plate; 47 is the limiting door; 48 is the guide plate; 49 is the water guide plate; 51 is the extension rod; 52 is the mounting rod; 53 is the rotating section; 54 is the drooping section; 55 is the hook section; 5 is the water pump; 6 is the anti-sway plate. Detailed implementation mode

[0030] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0031] As Figure 8 shown, the floating ball includes a columnar main body 11, and the middle part of the main body 11 has a perforation 12. As Figure 1 , Figure 2 , Figure 3 and Figure 6 shown, the floating ball sorting system includes a frame 2, a conveyor belt 3 and a sorting water tank 4. A plurality of carriers are arranged at equal intervals on the conveyor belt 3. The conveyor belt 3 includes a loading section 31 and a detection section 32. The carrier includes an extension rod 51 horizontally fixed on one side of the conveyor belt 3 and a mounting rod 52 rotatably connected to the extension rod 51. The mounting rod 52 includes a rotating section 53 parallel to the extension rod 51, a drooping section 54 perpendicular to the rotating section 53, and a hook section 55 fixed at the lower end of the drooping section 54. The state of each mounting rod 52 on the conveyor belt 3 under the action of gravity is that the drooping section 54 is vertically downward and the hook section 55 is vertically upward;

[0032] The hook section 55 is used to be adapted to the perforation 12, and the ratio of the length of the hook section 55 to the length of the perforation 12 is 0.2 - 0.6; if the diameter of the perforation 12 is much larger than the diameter of the hook section 55, a deeper insertion is required.

[0033] The sorting water tank includes a detection chamber 41 close to the conveyor belt 3 and a sorting chamber far from the conveyor belt 3. Two partition boards 42 are arranged in the sorting chamber. The two partition boards 42 divide the sorting chamber into a cavity 43 for storing underweight objects, a cavity 44 for storing qualified objects and a cavity 45 for storing overweight objects. Sorting plates 46 extending to the liquid level of the detection chamber 41 are respectively connected to the two partition boards 42. A gap allowing the drooping section 54 to pass through is reserved between the inner end of the sorting plate 46 and the side wall of the detection chamber 41. A limiting door 47 located above the hook section 55 is provided on the sorting plate 46;

[0034] The sorting chamber is filled with a functional liquid. The front end of the detection section 32 is higher than the rear end. The floating balls at the detection section 32 partially protrude above the liquid level of the functional liquid, and the floating balls at the detection section 32 are in a suspended state.

[0035] The functional liquid is water or an unsaturated brine mixture, and generally water is sufficient. Since the density range of the floating balls is between 0.2 and 0.6 g / cm³, the floating balls within this density range can ensure that most of them are above the water surface in water. However, if the density of the functional liquid is increased, a larger proportion of the floating balls can be above the liquid surface, and the floating balls floating in the detection chamber 41 have less influence on the liquid level fluctuation, which is beneficial to improving the detection accuracy.

[0036] There is a gap between the partition plate 42 and the bottom of the sorting water tank. A water pump 5 is arranged at the bottom of the sorting chamber. The water inlet end of the water pump 5 is located within the sorting chamber, and the water outlet end of the water pump 5 is located at the bottom of the detection chamber 41.

[0037] A material guiding plate 48 is arranged between the detection chamber 41 and the sorting chamber. The side of the material guiding plate 48 close to the detection chamber 41 extends below the liquid level in the detection chamber 41. The floating balls in the detection chamber 41 that are released from the restriction of the hanging hook section 55 can enter the sorting chamber under the action of the material guiding plate 48.

[0038] Several anti-rolling plates 6 are arranged in the middle and lower part of the detection chamber 41. The anti-rolling plates 6 are of a mesh plate structure, and the water outlet end of the water pump 5 is located below the lowermost anti-rolling plate 6. The function of the anti-rolling plates 6 is to reduce the influence of the liquid entering the detection chamber 41 from the sorting chamber on the liquid level in the detection chamber 41 and maintain the liquid level relatively stable within a certain range.

[0039] A water guiding plate 49 is arranged on the sorting water tank near the end of the detection end. The water guiding plate 49 can reduce the loss of the liquid in the sorting water tank.

[0040] The limiting height of the limiting door 47 is adjustable. The sorting plate 46 is detachably connected to the sorting water tank, so that the height of the limiting door 47 is adjustable. The sorting plate 46 can divide the detection chamber 41 into three parts, and the floating balls floating between the three parts will not intermix.

[0041] The detection section 32 forms an angle of 2 to 6° with the horizontal plane, and the angle between the detection section 32 and the horizontal plane is adjustable. The conveyor belt 3 is pulled by several driving rollers, and each driving roller is rotatably connected to the frame 2. The position of the driving roller at the end of the detection section 32 on the frame 2 is adjustable, so that the angle between the detection section 32 and the horizontal plane is adjustable. However, the driving roller used to adjust this angle needs to ensure that the conveyor belt 3 is in a tensioned state after adjustment.

[0042] The floating ball sorting method includes the following steps:

[0043] A. Modulate the density of the functional liquid so that a float ball of standard weight floats partially above the liquid level in the detection chamber 41; start the water pump 5 to make the liquid in the detection chamber 41 flow horizontally from the guide plate 48 into the sorting chamber, and control the total amount of liquid in the sorting water tank so that the liquid depth in the sorting chamber is about half of the liquid depth in the detection chamber 41; at the entrance of the detection section 32, the float ball on the hook section leaves the liquid level, and as the detection section 32 tilts, the float ball gradually contacts the liquid level.

[0044] B. Debugging: Adjust the limit height of the limit door 47 so that a float ball of standard weight threaded on the hook section 55 can pass through the limit door 47 near the head end of the detection section 32 but cannot pass through the limit door 47 near the tail end of the detection section 32; adjust the inclination angle between the detection section 32 and the horizontal plane so that the distance between the top of the hook section 55 on the carrier in the lowest position of the detection section 32 and the liquid level is greater than the height of the float ball; ensure that the float ball at the tail end of the detection section 32 can completely break away from the restriction of the hook section and enter the detection chamber 41.

[0045] C. Control the slow movement of the conveyor belt 3, and sleeve the float ball on the hook section at the loading section 31. The float ball with a weight less than the standard float ball weight range is restricted by the limit door 47 near the head end of the detection section 32 and breaks away from the hook section 55, and enters the underweight storage chamber 43 under the guiding action of the liquid flow; the float ball within the standard float ball weight range is restricted by the limit door 47 near the tail end of the detection section 32 and breaks away from the hook section 55, and enters the qualified storage chamber 44 under the guiding action of the liquid flow; the float ball with a weight greater than the standard float ball weight range breaks away from the hook section 55 due to the relatively large distance between the hook section 55 and the liquid level, and enters the overweight storage chamber 45 under the guiding action of the liquid flow; the moving speed of the conveyor belt 3 needs to ensure that the carrier is in a vertical state. Of course, this is also related to the weight of the carrier. The carrier ensures that the hanging section 54 is almost in a vertical state under the action of gravity, and the hanging section 54 tilts to cause the float ball to break away from the hook section 55. A small inclination angle will not cause the float ball to break away from the hook section 55 due to the moving direction of the carrier.

[0046] D. Continuously or at intervals, separately collect the float balls in the underweight storage chamber 43, the qualified storage chamber 44, and the overweight storage chamber 45, that is, complete the sorting of the float balls.

[0047] Since the float balls are formed by a mold, and under the action of the foaming pressure, the outer contours of the float balls have extremely small differences. In this solution, it is only necessary to detect whether their weights meet the standards. The traditional method of weighing one by one not only has low efficiency but also is difficult to be applied to float balls of different specifications.

[0048] To better explain the principle of this system, the following description is given:

[0049] As Figure 7As shown, due to the inclination of the detection section 32, for float balls of the same weight, from the head end to the tail end of the detection section 32, the connection length between the float ball and the corresponding hook portion gradually decreases. When the length of the hook section 55 inserted into the through hole 12 of the float ball is short, the limit door 47 can drive the float ball to incline and disengage from the hook section 55. At the tail end of the detection section 32, the float ball completely disengages from the hook section 55 and enters the detection cavity 41; the limit door 47 near the tail end of the detection section 32 is slightly lower than the limit door 47 near the head end of the detection section 32.

[0050] As Figure 4 shown, when the same float ball is at different positions on the detection section 32, the length of the hook section 55 inserted into the through hole 12 of the float ball is different.

[0051] As Figure 5 shown, for float balls of different weights at the same position on the detection section 32, the length of the hook section 55 inserted into the through hole 12 of the float ball is also different, so the heights of float balls of different weights above the liquid level are different.

[0052] The structure of the carrier can not only ensure that the conveyor belt 3 is located on one side of the sorting water tank, but also enable the hook section 55 to be located inside the sorting water tank and extend below the liquid level.

[0053] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A float ball sorting system for producing a float ball liquid level switch, the float ball comprising a cylindrical body (11), the middle of the body (11) having a through hole (12), characterized in that: The invention comprises a frame (2), a conveyor belt (3) and a sorting water tank (4), wherein a plurality of carriers are arranged on the conveyor belt (3) at equal intervals, wherein the conveyor belt (3) comprises a feeding section (31) and a detection section (32), wherein the carrier comprises an extension rod (51) fixed horizontally on one side of the conveyor belt (3) and a mounting rod (52) rotatably connected to the extension rod (51), wherein the mounting rod (52) comprises a rotating section (53) parallel to the extension rod (51), a hanging section (54) perpendicular to the rotating section (53) and a hook section (55) fixed at the lower end of the hanging section (54), and wherein the mounting rods (52) on the conveyor belt (3) are in a state of being held under weight: the hanging section (54) is vertically facing downward, and the hook section (55) is vertically facing upward; The hook section (55) is used to match the through hole (12), and the ratio of the length of the hook section (55) to the length of the through hole (12) is 0.2 to 0.6; The sorting water tank comprises a detection chamber (41) close to the conveyor belt (3) and a sorting chamber far from the conveyor belt (3), wherein two partitions (42) are arranged in the sorting chamber, and the two partitions (42) divide the sorting chamber into an under-light storage chamber (43), a qualified storage chamber (44) and an over-weight storage chamber (45), and the two partitions (42) are respectively connected with sorting plates (46) extending to the liquid surface of the detection chamber (41), and a gap is reserved between the inner end of the sorting plate (46) and the side wall of the detection chamber (41) to allow the drooping section (54) to pass through, and the sorting plate (46) has a limit gate (47) located above the hook section (55); The sorting cavity is filled with functional liquid, the head end of the detection section (32) is higher than the tail end, the float part located at the detection section (32) extends above the liquid surface of the functional liquid, and the float located at the detection section (32) is in a suspended state; The limiting height of the limiting door (47) is adjustable; The detection section (32) has an inclination angle of 2 to 6° with the horizontal plane, and the inclination angle between the detection section (32) and the horizontal plane is adjustable.

2. According to claim 1, a float ball sorting system for producing a float ball liquid level switch is characterized in that: The functional liquid is water or an unsaturated salt water mixture.

3. The float ball sorting system for producing float ball liquid level switches according to claim 2, characterized in that: There is a gap between the partition plate (42) and the bottom of the sorting water tank. A water pump (5) is provided at the bottom of the sorting chamber. The water inlet end of the water pump (5) is located in the sorting chamber, and the water outlet end of the water pump (5) is located at the bottom of the detection chamber (41).

4. The float ball sorting system for producing float ball liquid level switches according to claim 3, characterized in that: A material guide plate (48) is provided between the detection chamber (41) and the sorting chamber, and a side of the material guide plate (48) close to the detection chamber (41) extends below the liquid surface of the detection chamber (41).

5. The float ball sorting system for producing float ball liquid level switches according to claim 4, characterized in that: A plurality of anti-roll plates (6) are provided in the middle and lower part of the detection chamber (41); the anti-roll plates (6) are mesh plate structures; and the water outlet end of the water pump (5) is located below the lowest anti-roll plate (6).

6. The float ball sorting system for producing float ball liquid level switches according to claim 5, characterized in that: A water guide plate (49) is provided on the sorting water tank near the end of the detection end.

7. A method for float ball separation using the float ball separation system according to any one of claims 1 to 6, characterized in that: The steps include: A. Modulating the density of the functional liquid so that the float ball of standard weight is partially exposed above the liquid surface in the detection chamber (41); starting the water pump (5) so that the liquid in the detection chamber (41) flows from the guide plate (48) to the sorting chamber, and controlling the total amount of liquid in the sorting water tank so that the depth of the liquid in the sorting chamber is half of the depth of the liquid in the detection chamber (41); B. Debugging, adjusting the limit height of the limit gate (47) so that a float ball of standard weight passing through the limit gate (47) near the head end of the detection section (32) can pass through the limit gate (47) near the end of the detection section (32); adjusting the inclination angle between the detection section (32) and the horizontal plane so that the distance between the top of the hook section (55) on the carrier where the detection section (32) is at the lowest position and the liquid surface is greater than the height of the float ball; C. Control the conveyor belt (3) to move slowly, and place the float on the hook section (55) at the feeding section (31). The float with a weight less than the standard float weight range is restricted by the limit gate (47) near the head end of the detection section (32) and is separated from the hook section (55), and enters the underweight storage chamber (43) under the guidance of the liquid flow; the float within the standard float weight range is restricted by the limit gate (47) near the end of the detection section (32) and is separated from the hook section (55), and enters the qualified storage chamber (44) under the guidance of the liquid flow; the float with a weight greater than the standard float weight range is separated from the hook section (55) due to the long distance between the hook section (55) and the liquid surface, and enters the overweight storage chamber (45) under the guidance of the liquid flow; D. Continuously or in different time periods, the floating balls in the under-light storage chamber (43), the qualified storage chamber (44) and the over-heavy storage chamber (45) are collected respectively, thus completing the sorting of the floating balls.

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