CN215031078U - Screening machine shuts down shock mitigation system - Google Patents

Abstract

The utility model relates to a screening machine stop shock mitigation system, which is characterized in that the screening machine stop shock mitigation system comprises an energy storage system, wherein the energy storage system comprises a relay device, a circuit control device, a circuit breaker, a first speed relay, a second speed relay, a spiral pipe and a switch device; the relay device is connected with a vibrating motor of the screening machine, a zero line of a power supply, a circuit control device and a solenoid, and the solenoid is used for storing energy when the screening machine stops; circuit controlling means still connects circuit breaker, first speed relay, second speed relay, spiral pipe and switching device respectively, and first speed relay still connects respectively circuit breaker and switching device, second speed relay still connect switching device, the circuit breaker is used for control energy storage system's switching, first speed relay are used for triggering when the vibrating motor rotational speed reaches the rotational speed threshold value, and second speed relay is used for triggering when the vibrating motor stops, the utility model discloses can extensively be used for in the sieve separator field.

Description

Screening machine shuts down shock mitigation system

Technical Field

The utility model relates to a damping system is shut down to sieve separator belongs to the sieve separator field.

Background

The sieve separator can realize screening the material of different size shapes fast, all has extensive application in fields such as mine, machinery, chemical industry, medicine and food, and the principle of most sieve separators on the market at present adopts high-frequency vibration to drive the material and sieves through the net of different sizes. When the screening machine works normally, the generated vibration is small (the amplitude is about 2-3 mm); when the screening machine is stopped, although the electric power input is lost, the screening equipment cannot be stopped immediately and still is in a vibration state because the screening machine still has certain vibration inertia, but the vibration energy of the screening equipment is lower and lower, and finally the screening machine is completely stopped after the kinetic energy of the screening machine is gradually dissipated. In the process that the screening machine stops gradually, the vibration frequency and the vibration amplitude are not synchronous and have larger variation; vibration frequency drops to 0 gradually, but the phenomenon that the amplitude reduces after the increase appears earlier, especially when passing through the resonant frequency zone time, the sieve separator amplitude is greater than the amplitude of normal operation far away, is about 4 ~ 5 times, and the biggest amplitude can reach ten few millimeters, and the vibration dimension also can change, and the orbit is more complicated than normal during operation, for example: for the linear screening machine, the vibration is changed from small quasi-one-dimensional vibration during normal operation into large three-dimensional vibration, and the large vibration easily causes damage to equipment, reduces the service life of the equipment, and particularly easily causes the loss or accelerated wear of some movable parts, such as springs, vacuum flexible connection and the like. In addition, in an environment where space is compact, large vibrations easily hit other components, resulting in damage to those components.

In most common application environments, because maintenance is convenient, damage caused by large-amplitude vibration when a screening machine stops is not obvious, but in some special application environments, reduction or reduction of the damage is very necessary, for example, in a more precise laboratory environment or a nuclear environment, wherein screening of a large number of target materials is involved in a subcritical spent fuel transmutation system (ADS) driven by an accelerator, which is an advanced nuclear fission device in the future, maintenance and maintenance of the screening machine are very inconvenient and very high in cost, particularly, a soft connecting part, which is an interface between the screening machine and other equipment, is a vacuum precise device, the requirement on the tolerance of vibration fatigue is strict, and the vacuum property of the screening machine is very easily damaged for large-amplitude vibration exceeding a certain range, so that damage to the equipment caused by the large-amplitude vibration is reduced as much as possible.

However, the vibration damping system of the screening machine in the prior art is mainly concerned with the vibration damping when the screening machine is in normal operation, and is not concerned with the vibration damping system when the screening machine is stopped.

Disclosure of Invention

To the above problem, the utility model aims at providing a damping system is shut down to sieve separator can eliminate the vibration by a wide margin that produces when the sieve separator shuts down to slow down the destruction that vibrates by a wide margin to equipment and relevant adapting unit production.

In order to achieve the purpose, the utility model adopts the following technical proposal: a shutdown damping system of a screening machine comprises an energy storage system, wherein the energy storage system comprises a relay device, a circuit control device, a circuit breaker, a first speed relay, a second speed relay, a spiral pipe and a switch device;

the relay device is connected with a vibrating motor of the screening machine, a zero line of a power supply, the circuit control device and the solenoid, and the solenoid is used for storing energy when the screening machine stops;

the circuit control device is further connected with the circuit breaker, the first speed relay, the second speed relay, the spiral pipe and the switch device respectively, the first speed relay is further connected with the circuit breaker and the switch device respectively, the second speed relay is further connected with the switch device, the circuit breaker is used for controlling the opening and closing of the energy storage system, the first speed relay is used for triggering when the rotating speed of the vibrating motor reaches a rotating speed threshold value, and the second speed relay is used for triggering when the vibrating motor stops.

Preferably, the relay device comprises a thermal relay, a first relay and a second relay;

the thermal relay is connected with a vibration motor of the screening machine, and is also respectively connected with the circuit control device, the first relay, the second relay, the solenoid and a zero line of a power supply;

the first relay is also respectively connected with the second relay, the second speed relay and the switch device;

the second relay is also respectively connected with the first speed relay, the second speed relay and the switch device.

Preferably, the circuit control device includes a first contactor, a second contactor, and a third contactor;

the first contactor is respectively connected with the solenoid, the circuit breaker, the second contactor, the third contactor, the first relay, the second relay and the switching device;

the second contactor is also respectively connected with the solenoid, the circuit breaker, the third contactor, the first relay, the second speed relay and the switching device;

the third contactor is also connected with the solenoid, the first relay, the second relay and the switching device respectively.

Preferably, the switch device includes a first button switch, a second button switch, and a third button switch;

the first button switch, the second button switch and the third button switch are connected with each other;

the first button switch and the second button switch are also respectively connected with the first contactor, the second contactor, the third contactor, the first relay and the second relay;

and the third button switch is also respectively connected with the second contactor, the first relay, the second relay, the first speed relay and the second speed relay.

The utility model discloses owing to take above technical scheme, it has following advantage:

1. the utility model discloses owing to be provided with energy storage system, energy storage system connects the sieve separator, can convert the vibration energy of sieve separator to energy storage system rapidly for the sieve separator becomes quiescent condition by the motion state fast, eliminates the sieve separator at the vibration by a wide margin that shuts down the in-process and produce.

2. The utility model discloses can reduce vibration and frequency by a wide margin that produces when shutting down the sieve separator, the harm degree to the soft adapting unit in sieve separator vacuum that significantly reduces.

3. The utility model discloses can reduce the down time of sieve separator, and do not produce any other influences to equipment, can effectively prolong the life-span of equipment and relevant part, can wide application in the sieve separator field.

Drawings

Fig. 1 is a schematic structural diagram of a system according to an embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "upper", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

The embodiment of the utility model provides a damping system is shut down to sieve separator mainly is to increase energy storage system on the sieve separator, becomes, in the vibration energy of sieve separator converts energy storage system rapidly for the sieve separator becomes quiescent condition by the motion state fast, can eliminate the sieve separator and shut down the vibration by a wide margin that the in-process produced.

As shown in fig. 1, the utility model provides a damping system is shut down to sieve separator, including energy storage system, wherein, energy storage system circuit control device, circuit breaker QF, first speed relay KS1, second speed relay KS2, relay, spiral pipe L and switching device, circuit control device includes first ~ third contactor KM1 ~ KM3, relay includes first ~ second relay KA1 ~ KA2 and thermal relay FR, switching device includes first ~ third button switch SB1 ~ SB 3.

The vibrating motor of sieve separator connects the one end of electrothermal relay FR, and electrothermal relay FR still connects the zero line N of first contactor KM1, second contactor KM2, third contactor KM3, first relay KA1, second relay KA2, solenoid L and power respectively, and electrothermal relay FR is used for carrying out overload protection, and solenoid L is used for the energy storage when the sieve separator is shut down.

The first contactor KM1 is also respectively connected with a solenoid L, a breaker QF, a second contactor KM2, a third contactor KM3, a first relay KA1, a second relay KA2, a first button switch SB1 and a second button switch SB2, the first contactor KM1 is used for controlling the low-voltage starting of the screening machine, and the breaker QF is used for controlling the opening or closing of the energy storage system.

The second contactor KM2 is also connected with a solenoid L, a breaker QF, a third contactor KM3, a first relay KA1, a second relay KA2, a second speed relay KS2, a first push-button switch SB1, a second push-button switch SB2 and a third push-button switch SB3, respectively, and the second contactor KM2 is used for circuit control when the screening machine is stopped.

The third contactor KM3 is also respectively connected with a solenoid L, a first relay KA1, a second relay KA2, a first button switch SB1 and a second button switch SB2, and the third contactor KM3 is used for circuit control when the screening machine operates at high voltage.

The first relay KA1 is also connected with a second relay KA2, a second speed relay KS2, a first push-button switch SB1, a second push-button switch SB2 and a third push-button switch SB3, respectively, and the first relay KA1 is used for controlling the start or the close of the third contactor KM 3.

The second relay KA2 is also connected to a first speed relay KS1, a second speed relay KS2, a first push-button switch SB1, a second push-button switch SB2 and a third push-button switch SB3, respectively, and the second relay KA2 is used to control the start or the close of the second contactor KM 2.

The first speed relay KS1 is also respectively connected with a breaker QF and a third button switch SB3, and the first speed relay KS1 is used for reflecting the rotating speed of the vibration motor and is triggered when the rotating speed of the vibration motor reaches a preset rotating speed threshold value.

The second speed relay KS2 is also connected to a third push button switch SB3, and the second speed relay KS2 is used to prevent reverse rotation of the vibration motor, and is activated when the vibration motor is stopped.

The first, second and third push-button switches SB1, SB2 and SB3 are connected to each other, the first push-button switch SB1 is used to activate the energy storage system, the second push-button switch SB2 is used to emergency-power-off the energy storage system, and the third push-button switch SB3 is used to stop the energy storage system.

In a preferred embodiment, the solenoid L includes three solenoids, each of which is connected to a first contactor KM1, a second contactor KM2, a third contactor KM3, and a thermal relay FR, respectively.

The utility model discloses screening machine shuts down shock mitigation system's application method is explained in detail through specific embodiment below, includes following step:

1) set up the utility model discloses an energy storage system to with the vibrating motor of energy storage system connection sieve separator.

2) The breaker QF is switched on to switch on the power supply, the first button switch SB1 is pressed, the energy storage system is started, the first contactor KM1 is electrified for pull-in, and the screening machine starts to work.

3) When the rotating speed of a vibration motor of the screening machine running under low pressure reaches a preset rotating speed threshold value, a contact of a first speed relay KS1 is closed, a first relay KA1 is electrified and attracted, a third contactor KM3 is electrified and attracted, a solenoid L is in short circuit, and the screening machine enters full-pressure normal working operation.

4) When the screening machine is stopped, the third button switch SB3 is pressed, the first contactor KM1 and the third contactor KM3 are powered off and released, the contact of the second speed relay KS2 is closed, the second relay KA2 is powered on and pulled in, the second contactor KM2 is powered on and pulled in, at the moment, the solenoid L starts to store energy, and the screening machine enters a vibration energy storage state through the solenoid L.

5) When the vibration frequency of the vibration motor is lower than a preset frequency threshold (which can be set to be static), the contact of the second speed relay KS2 is opened, the second contactor KM2 loses power and releases, and the vibration reduction working state of the screening machine is finished.

6) When the energy storage system is abnormal, the second button switch is pressed down to perform emergency power-off, and the energy storage system is not used under normal conditions.

7) When the energy storage system is overloaded, the thermal relay FR is switched off to carry out overload protection.

Adopt the utility model discloses a shock mitigation system is shut down to sieve separator to orthoscopic vibration sieve separator tests the verification as an example, as shown in table 1 below, the decline that shows all appears in vibration and frequency by a wide margin that produces when sieve separator shuts down, especially in horizontal and vertical direction amplitude and the reduction of frequency can significantly reduce the harm degree to the soft adapting unit in sieve separator vacuum. Additionally, adopt the utility model discloses an amplitude decay rate when shock mitigation system sieve separator is shut down to the sieve separator accelerates, and down time is reduced to 2 ~ 3s by original 10 ~ 15s, and does not produce any other influence to equipment, can effectively prolong the life-span of equipment and relevant part:

table 1 comparison graph of experimental effect before and after shock absorption of screening machine:

above-mentioned each embodiment only is used for explaining the utility model discloses, wherein structure, connected mode and the preparation technology etc. of each part all can change to some extent, all are in the utility model discloses equal transform and improvement of going on technical scheme's the basis all should not exclude outside the protection scope of the utility model.

Claims (4)

1. A screening machine shutdown damping system is characterized by comprising an energy storage system, wherein the energy storage system comprises a relay device, a circuit control device, a circuit breaker, a first speed relay, a second speed relay, a spiral pipe and a switch device;

the relay device is connected with a vibrating motor of the screening machine, a zero line of a power supply, the circuit control device and the solenoid, and the solenoid is used for storing energy when the screening machine stops;

the circuit control device is further connected with the circuit breaker, the first speed relay, the second speed relay, the spiral pipe and the switch device respectively, the first speed relay is further connected with the circuit breaker and the switch device respectively, the second speed relay is further connected with the switch device, the circuit breaker is used for controlling the opening and closing of the energy storage system, the first speed relay is used for triggering when the rotating speed of the vibrating motor reaches a rotating speed threshold value, and the second speed relay is used for triggering when the vibrating motor stops.

2. The system of claim 1, wherein the relay device comprises a thermal relay, a first relay, and a second relay;

the thermal relay is connected with a vibration motor of the screening machine, and is also respectively connected with the circuit control device, the first relay, the second relay, the solenoid and a zero line of a power supply;

the first relay is also respectively connected with the second relay, the second speed relay and the switch device;

the second relay is also respectively connected with the first speed relay, the second speed relay and the switch device.

3. The system of claim 2, wherein the circuit control device comprises a first contactor, a second contactor, and a third contactor;

the first contactor is respectively connected with the solenoid, the circuit breaker, the second contactor, the third contactor, the first relay, the second relay and the switching device;

the second contactor is also respectively connected with the solenoid, the circuit breaker, the third contactor, the first relay, the second speed relay and the switching device;

the third contactor is also connected with the solenoid, the first relay, the second relay and the switching device respectively.

4. The screening machine shutdown shock absorption system of claim 3 wherein the switch means comprises a first push button switch, a second push button switch and a third push button switch;

the first button switch, the second button switch and the third button switch are connected with each other;

the first button switch and the second button switch are also respectively connected with the first contactor, the second contactor, the third contactor, the first relay and the second relay;

and the third button switch is also respectively connected with the second contactor, the first relay, the second relay, the first speed relay and the second speed relay.

Images