High-stability centrifugal machine for metaldehyde polycondensation

Abstract

The high-stability centrifugal machine for metaldehyde polycondensation comprises a centrifugal machine body, a rotating groove is formed in the top of the centrifugal machine body, a centrifugal motor is arranged in the rotating groove, and a centrifugal frame arranged in the rotating groove is arranged on an output shaft of the centrifugal motor; a to-be-detected plate is arranged at the bottom of the centrifugal tube, mounting grooves communicated with the positioning placement holes are formed in the positions, corresponding to the positioning placement holes, in the centrifugal frame, laser sensors used for measuring the distance of the to-be-detected plate are arranged in the mounting grooves, and alarms are arranged at the positions, corresponding to the positioning placement holes, of the top of the centrifugal frame. And a PLC (Programmable Logic Controller) for driving the alarm to give an alarm when the distance measured by the laser sensor to the plate to be detected is greater than a set value is arranged at the bottom of the centrifugal frame. The centrifugal tube in-place detection device is reasonable in structure, can detect the in-place condition of the centrifugal tube, and is high in centrifugal stability.

Description

Technical Field

[0001] The utility model relates to a centrifuge, in particular to a centrifuge for polycondensation of metaldehyde with high stability. Background Art

[0002] Metaldehyde is a highly selective snailicide that can prevent and control mollusks such as golden apple snails on rice, snails, slugs on vegetables, cotton and tobacco. The physical and chemical properties of metaldehyde are introduced as follows: This product is white needle-shaped crystals, density: 1.27, melting point: 246℃, sublimation at 115℃, vapor pressure: 6.6Pa (25℃), insoluble in water, soluble in benzene and chloroform, easy to depolymerize when heated or in acid. The half-life in soil is 1.4-6.6 days, it is not photolytic or hydrolytic, and a centrifuge is required when condensing metaldehyde.

[0003] In the prior art, the existing centrifuge for polycondensation of metaldehyde cannot detect the placement of the centrifuge tube when in use, resulting in the centrifuge tube not being in place when tilted. If the centrifuge tube is not fixed in time using the cover plate in the centrifuge, a certain gap will exist between the centrifuge tube that is not in place and the cover plate, resulting in different deflection angles when the centrifuge tube deflects, if the friction between the centrifuge tube and the centrifuge is different, and thus the centrifuge cannot be stable when working. Now, a centrifuge for polycondensation of metaldehyde with high stability is urgently needed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model aims to provide a centrifuge for polycondensation of metaldehyde with high stability to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure, can detect the position of the centrifuge tube, and has high centrifugal stability.

[0005] In order to achieve the above object, the utility model is realized by the following technical scheme: a centrifuge for polycondensation of metaldehyde with high stability, comprising:

[0006] A centrifuge body, a rotating groove is provided on the top of the centrifuge body, a centrifugal motor is provided inside the rotating groove, a centrifugal frame placed inside the rotating groove is provided on the output shaft of the centrifugal motor, a centrifugal groove is provided on the top of the centrifugal frame, a plurality of positioning holes connected to the centrifugal groove are evenly distributed inside the centrifugal frame, and a centrifugal tube is placed inside the positioning holes;

[0007] A plate to be detected is arranged at the bottom of the centrifuge tube, installation grooves connected with the positioning holes are opened at positions corresponding to the positioning holes inside the centrifuge frame, laser sensors for measuring the distance to the plate to be detected are arranged inside the installation grooves, alarms are arranged at positions corresponding to the positioning holes on the top of the centrifuge frame, and a PLC controller is arranged at the bottom of the centrifuge frame for driving the alarm to sound an alarm when the distance measured by the laser sensor to the plate to be detected is greater than a set value.

[0008] Furthermore, a brush is arranged between the lower side of the inner wall of the rotating groove and the bottom of the centrifugal frame.

[0009] Furthermore, an insulating ring is provided at the bottom of the centrifugal frame, and the brush includes an annular conductive plate arranged on the side wall of the insulating ring and a contact conductive plate arranged on the lower side of the inner wall of the rotating groove and in contact with the annular conductive plate, and an insulating pad is provided between the bottom of the contact conductive plate and the lower side of the inner wall of the rotating groove.

[0010] Furthermore, the axis center line of the output shaft of the centrifugal motor, the axis center line of the insulating ring and the axis center line of the annular conductive plate coincide with each other.

[0011] Furthermore, a wire groove connected to the installation groove is provided at the bottom of the centrifugal frame.

[0012] Furthermore, a counterweight block is arranged at a position symmetrical to the PLC controller at the bottom of the centrifugal frame, and the weight of the counterweight block is the same as the weight of the PLC controller.

[0013] According to the utility model, a centrifuge for polycondensation of metaldehyde with high stability measures the distance to a plate to be detected by emitting a laser beam using a laser sensor. When the distance is greater than a set value, it indicates that the position of the plate to be detected at the bottom of the centrifuge tube to the laser sensor has not reached the set distance, indicating that the centrifuge tube is not in place. The laser sensor transmits a signal to a PLC controller, and the PLC controller receives the signal to cause an alarm to sound a warning, thereby facilitating detection of the placement of the centrifuge tube, and timely discovery and adjustment can be made. Therefore, when the cover plate is used to press and fix the centrifuge tube, there will be no gap between the two, thereby improving the stability of the centrifuge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0015] Figure 1 It is a three-dimensional diagram of a centrifuge for polycondensation of metaldehyde with high stability according to one embodiment of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of a centrifugal frame in a centrifuge for polycondensation of metaldehyde with high stability according to one embodiment of the utility model;

[0017] Figure 3 It is a front cross-sectional view of a centrifugal frame in a centrifuge for polycondensation of metaldehyde with high stability according to one embodiment of the utility model;

[0018] Figure 4 A schematic diagram of a control system according to an embodiment of the utility model;

[0019] In the figure: 1. centrifuge body; 2. rotating groove; 3. centrifugal frame; 31. centrifugal groove; 4. positioning hole; 5. alarm; 6. centrifugal tube; 61. plate to be tested; 7. installation groove; 8. laser sensor; 9. wire groove; 10. PLC controller; 101. counterweight; 11. insulating ring; 12. centrifugal motor; 13. brush; 131. annular conductive plate; 132. contact conductive plate. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1 As shown, the utility model provides a technical solution: a centrifuge for polycondensation of metaldehyde with high stability, comprising:

[0022] A centrifuge body 1, a rotating groove 2 is provided on the top of the centrifuge body 1, a centrifugal motor 12 is provided inside the rotating groove 2, a centrifugal frame 3 placed inside the rotating groove 2 is provided on the output shaft of the centrifugal motor 12, a centrifugal groove 31 is provided on the top of the centrifugal frame 3, a plurality of positioning holes 4 connected to the centrifugal groove 31 are evenly distributed inside the centrifugal frame 3, and a centrifugal tube 6 is placed inside the positioning holes 4;

[0023] A plate to be detected 61 is arranged at the bottom of the centrifuge tube 6, and mounting grooves 7 connected to the positioning and placing holes 4 are provided at positions corresponding to the positioning and placing holes 4 inside the centrifuge frame 3. A laser sensor 8 for measuring the distance of the plate to be detected 61 is arranged inside the mounting groove 7. An alarm 5 is arranged at the top of the centrifuge frame 3 at positions corresponding to the positioning and placing holes 4. A PLC controller 10 is arranged at the bottom of the centrifuge frame 3 to drive the alarm 5 to sound an alarm when the distance measured by the laser sensor 8 to the plate to be detected 61 is greater than a set value. This design measures the distance of the plate to be detected 61 by using the laser sensor 8 to emit a laser beam. When it is greater than the set value, it means that the position of the plate to be detected 61 at the bottom of the centrifuge tube 6 to the laser sensor 8 has not reached the set distance, which means that the centrifuge tube 6 is not in place. The laser sensor 8 transmits a signal to the PLC controller 10, and the PLC controller 10 receives the signal to cause the alarm 5 to sound a warning, so that it is easy to detect the placement of the centrifuge tube 6, and can be discovered and adjusted in time, so that when the cover plate is used to press and fix the centrifuge tube 6, there will be no gap between the two, thereby improving the stability of the centrifuge.

[0024] Reference Figure 2 and Figure 3 A brush 13 is arranged between the lower side of the inner wall of the rotating groove 2 and the bottom of the centrifugal frame 3, an insulating ring 11 is arranged at the bottom of the centrifugal frame 3, the brush 13 includes an annular conductive plate 131 arranged on the side wall of the insulating ring 11 and a contact conductive plate 132 arranged on the lower side of the inner wall of the rotating groove 2 and in contact with the annular conductive plate 131, an insulating pad is arranged between the bottom of the contact conductive plate 132 and the lower side of the inner wall of the rotating groove 2, and the design facilitates connection with the power supply inside the centrifuge to power the PLC controller 10, the alarm 5 and the laser sensor 8 by using the brush 13, and does not affect their use when they rotate.

[0025] Reference Figure 3 The axis center line of the output shaft of the centrifugal motor 12, the axis center line of the insulating ring 11 and the axis center line of the annular conductive plate 131 coincide with each other, which improves the rationality of the design. A wire groove 9 connected to the mounting groove 7 is provided at the bottom of the centrifugal frame 3. By using the wire groove 9, the design facilitates the wire to pass through the wire groove 9 to power the laser sensor 8. A counterweight 101 is provided at a position symmetrical to the PLC controller 10 at the bottom of the centrifugal frame 3. The weight of the counterweight 101 is the same as the weight of the PLC controller 10. This design facilitates the centrifugal frame 3 to maintain rotation stability when rotating.

[0026] Reference Figure 4 An A / D converter is provided at the input end of the PLC controller 10, a D / A converter is provided at the output end of the PLC controller 10, the laser sensor 8 is electrically connected to the A / D converter, and the alarm 5 is electrically connected to the D / A converter.

[0027] Reference Figure 1-Figure 4 As an embodiment of the utility model: when it is necessary to detect the placement of the centrifuge tube 6, the staff puts the centrifuge tube 6 with the plate to be detected 61 into the positioning placement hole 4, and then makes the laser sensor 8 work to emit a laser beam to measure the distance from the plate to be detected 61. When it is greater than the set value, it means that the position of the plate to be detected 61 at the bottom of the centrifuge tube 6 to the laser sensor 8 has not reached the set distance, which means that the centrifuge tube 6 is not in place. The laser sensor 8 transmits a signal to the PLC controller 10. The PLC controller 10 receives the signal and causes the alarm 5 to issue an alarm, thereby facilitating the detection of the placement of the centrifuge tube 6. It can be discovered and adjusted in time, so that when the cover plate is used to press and fix the centrifuge tube 6, there will be no gap between the two, thereby improving the stability of the centrifuge, wherein the cover plate is the prior art that matches the centrifugal groove 31 of the centrifuge frame 3 to press and fix the centrifuge tube 6, thereby improving the practicality of the utility model.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A centrifuge for polycondensation of metaldehyde with high stability, comprising: A centrifuge body (1), wherein a rotating groove (2) is provided on the top of the centrifuge body (1), a centrifugal motor (12) is arranged inside the rotating groove (2), a centrifugal frame (3) arranged inside the rotating groove (2) is arranged on the output shaft of the centrifugal motor (12), a centrifugal groove (31) is provided on the top of the centrifugal frame (3), a plurality of positioning holes (4) connected to the centrifugal groove (31) are evenly distributed inside the centrifugal frame (3), and a centrifugal tube (6) is placed inside the positioning holes (4); It is characterized in that A plate to be detected (61) is arranged at the bottom of the centrifuge tube (6); a mounting groove (7) in communication with the positioning hole (4) is provided at a position corresponding to the positioning hole (4) inside the centrifuge frame (3); a laser sensor (8) for measuring the distance to the plate to be detected (61) is arranged inside the mounting groove (7); an alarm (5) is arranged at a position corresponding to the positioning hole (4) on the top of the centrifuge frame (3); and a PLC controller (10) is arranged at the bottom of the centrifuge frame (3) for driving the alarm (5) to sound an alarm when the distance measured by the laser sensor (8) to the plate to be detected (61) is greater than a set value.

2. A centrifuge for polycondensation of metaldehyde with high stability according to claim 1, characterized in that: An electric brush (13) is arranged between the lower side of the inner wall of the rotating groove (2) and the bottom of the centrifugal frame (3).

3. A centrifuge for polycondensation of metaldehyde with high stability according to claim 2, characterized in that: An insulating ring (11) is arranged at the bottom of the centrifugal frame (3); the brush (13) comprises an annular conductive plate (131) arranged on the side wall of the insulating ring (11) and a contact conductive plate (132) arranged on the lower side of the inner wall of the rotating groove (2) and in contact with the annular conductive plate (131); an insulating pad is arranged between the bottom of the contact conductive plate (132) and the lower side of the inner wall of the rotating groove (2).

4. A centrifuge for polycondensation of metaldehyde with high stability according to claim 3, characterized in that: The axis center line of the output shaft of the centrifugal motor (12), the axis center line of the insulating ring (11) and the axis center line of the annular conductive plate (131) coincide with each other.

5. A centrifuge for polycondensation of metaldehyde with high stability according to claim 1, characterized in that: A wire groove (9) communicating with the mounting groove (7) is provided at the bottom of the centrifugal frame (3).

6. A centrifuge for polycondensation of metaldehyde with high stability according to claim 1, characterized in that: A counterweight (101) is provided at a position symmetrical to the PLC controller (10) at the bottom of the centrifugal frame (3), and the weight of the counterweight (101) is the same as the weight of the PLC controller (10).

Images