Planetary mixer with protective device

Abstract

The utility model relates to a planetary mixer with a protection device, which comprises a rack, an upper barrel, a mixing barrel, a mixing component and a power device, an operation inlet is formed between the upper barrel and the mixing barrel when the upper barrel and the mixing barrel are opened, the planetary mixer further comprises the protection device, an audible and visual alarm and a control system, the diffuse reflection grating is installed on a machine frame cross beam on the outer side of the upper barrel and used for generating a protection light curtain at an operation inlet, and when light signals of the diffuse reflection grating are shielded, the control system controls the power device to stop working or / and controls the audible and visual alarm to give an audible and visual alarm. When an object passes through a light curtain formed by the diffuse reflection grating, the object can be detected, so that a signal is output to a control system to lock the operation of the stirring assembly or / and sound-light alarm, and the occurrence of safety accidents can be effectively avoided; in addition, the diffuse reflection grating is installed on the cross beam, so that secondary installation in a use place by a client is not needed, and the production place of the client is not occupied additionally.

Description

TECHNICAL FIELD

[0001] The utility model relates to a planetary mixer, especially a planetary mixer with a protection device. BACKGROUND

[0002] At present, in the chemical planetary mixer industry, users often need to open and close the stirring barrel to add materials or clean materials during the production process. In this process, the operator's body needs to enter the stirring dangerous area inside the stirring barrel. Once the stirring paddle rotates, it may cause a major safety accident.

[0003] When facing the above problems in the industry, the current technical solution is to use a limit switch to detect the closing of the upper and lower barrels at a certain distance, and then start stirring. However, this cannot completely avoid the above risks. Another solution is to install a light curtain detection device on the outside of the equipment, which uses a pair of emitting and receiving poles to form a light curtain. When a person enters the light curtain range and is detected by the light curtain, the stirring operation is locked. However, this structure requires the installation of the light curtain after the equipment is installed on site, which is difficult to install and calibrate, occupies a large area, and consumes a lot of manpower. Moreover, the detection device is installed on the ground, which has the risk of being damaged by the stirring barrel during movement. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide a planetary mixer with a protection device. The planetary mixer uses a diffuse reflection grating as a protection device. When an object passes through the light curtain formed by the diffuse reflection grating, it will be detected, thereby outputting a signal to the control system to lock the stirring assembly and / or sound and light alarm, which can effectively prevent safety accidents. In addition, the diffuse reflection grating can be installed on the beam of the equipment during production, which does not require secondary installation by the customer at the use site and does not occupy the customer's production site.

[0005] The technical solution to solve the above technical problems is a planetary mixer with a protection device, which includes a rack, an upper barrel, a stirring barrel, a stirring assembly, and a power device for driving the stirring assembly. The rack includes a beam and a vertical beam. The upper barrel is fixed on the beam, and the stirring barrel is located below the upper barrel. When the upper barrel and the stirring barrel are opened, an operating entrance is formed between the upper barrel and the stirring barrel. The protection device, a sound and light alarm, and a control system are also included. The protection device is a diffuse reflection grating, which is installed on the beam outside the upper barrel to generate a protective light curtain at the operating entrance. The control system is electrically connected to the power device, the diffuse reflection grating, and the sound and light alarm. When the light signal of the diffuse reflection grating is blocked, the control system controls the power device to stop working or / and controls the sound and light alarm to sound and light alarm.

[0006] Further, the upper barrel is close to the longitudinal beam on one side, the diffuse reflection grating is composed of a side grating one, a side grating two and a front grating, the side grating one, the side grating two and the front grating are arranged into a Y-shaped and fixed on the cross beam, and the front grating is fixed on the cross beam away from the longitudinal beam on the one side of the upper barrel.

[0007] By adopting the technical scheme, the planet mixer with the protection device has the following beneficial effects:

[0008] 1. The planet mixer with the protection device directly installs the diffuse reflection grating on the original equipment, the diffuse reflection grating is integrated with an emitter and a receiver, is directly installed on the rack of the mixer, and the light curtain formed by the diffuse reflection grating covers three sides of the stirring barrel (one side of the stirring barrel is shielded by the longitudinal beam). When the stirring barrel of the mixer is opened, if a person needs to work in the stirring barrel, the person will be detected by the diffuse reflection grating, so that the control system can lock the power device to stop the stirring assembly from running or / and the sound and light alarm can be sent through the alarm, the purpose of protecting and warning the operator is achieved, and the production accident can be avoided.

[0009] 2. The planet mixer with the protection device can install and calibrate the diffuse reflection grating in the equipment production process, achieves the protection purpose, solves the work content that the equipment must be installed with the grating again when the equipment reaches the customer, and the diffuse reflection grating is directly installed on the rack of the equipment, so that the customer site is not occupied additionally, the cost is reduced, and the equipment debugging efficiency is improved.

[0010] In the following, the technical features of the planet mixer with the protection device are further described in combination with the drawings and the embodiments. DRAWINGS

[0011] Figure 1 The planet mixer with the protection device is shown in the front view.

[0012] Figure 2 The planet mixer with the protection device is shown in the left view.

[0013] Figure 3 The planet mixer with the protection device is shown in the top view.

[0014] In the drawings: 1-rack, 101-cross beam, 102-longitudinal beam, 2-power device, 3-control system, 4-sound and light alarm, 5-diffuse reflection grating, 51-side grating one, 52-side grating two, 53-front grating, 6-upper barrel, 7-stirring assembly, 71-low-speed stirring assembly, 72-high-speed dispersion assembly, 8-stirring barrel.

[0015] Figure 1 The dotted area in the drawings is P1, indicating the side grating detection area.Figure 2 The dotted area in the figure is P2, which represents the front grating detection area. DETAILED DESCRIPTION

[0016] Example 1: A planetary mixer with a protective device, such as Figures 1-3 As shown, the planetary mixer comprises a frame 1, an upper barrel 6, a planetary component, a mixing barrel 8, a stirring assembly 7, and a power unit 2 for driving the stirring assembly. The planetary component is disposed within the upper barrel 6. The stirring assembly 7 comprises a low-speed stirring assembly 71 and a high-speed dispersing assembly 72. The frame comprises a crossbeam 101 and a longitudinal beam 102. The upper barrel 6 is fixed to the crossbeam 101. The stirring barrel 8 is located below the upper barrel. When the upper barrel and the stirring barrel are opened, an operating entrance is formed between the upper barrel 6 and the stirring barrel 8. The planetary mixer also includes a protective device, an audible and visual alarm 4, and a control system 3. The protective device is a diffuse reflection grating 5, which is mounted on the crossbeam 101 outside the upper barrel and is used to generate a protective light curtain at the operating entrance. The control system 3 is electrically connected to the power unit 2, the diffuse reflection grating 5, and the audible and visual alarm 4. When the light signal from the diffuse reflection grating 5 is blocked, the control system 3 controls the power unit 2 to stop operation, lock the stirring assembly, and / or controls the audible and visual alarm to sound an audible and visual alarm. That is, when the light signal of the diffuse reflection grating 5 is blocked, the control system can control the machine to stop or issue an audible and visual alarm, or stop and issue an audible and visual alarm at the same time according to customer needs.

[0017] In this embodiment, one side of the upper drum 6 is adjacent to the longitudinal beam 102. That is, the side of the upper drum near the longitudinal beam 102 is blocked by the longitudinal beam, preventing operators from operating from this side. The diffuse reflection grating 5 is composed of side grating 1 51, side grating 2 52, and front grating 53. These side gratings 1, 2, and front gratings are arranged in a U-shape and fixed to the crossbeam 101. The front grating 53 is fixed to the crossbeam 101 on the side of the upper drum away from the longitudinal beam. When the diffuse reflection grating 5 is powered on, it forms a diffuse reflection light curtain detection area in designated areas in front of, to the left of, and to the right of the operating entrance formed between the upper drum 6 and the mixing drum 8. Any object passing through the light curtain will be detected by the diffuse reflection grating, which will then output a signal to the control system to lock the operation of the mixing assembly and / or trigger an audible or visual alarm. The rear side of the operating entrance is blocked by the longitudinal beam, and the diffuse reflection grating 5 covers any direction from which an object can enter the mixing drum.

[0018] The specific structures of the frame 1, upper barrel 6, planetary components, stirring barrel 8, stirring assembly 7 and power device 2 for driving the stirring assembly described in the present invention are the same as those in the prior art and will not be repeated here.

[0019] The utility model discloses the advantage is: 1. whether the object enters the stirring operation area and realizes detection closed loop, thereby control equipment operating state, 2. realize the protection device installation on the equipment, and the object that possibly enters the operation area is closed detection, 3. solved the equipment party installation to the protection of the type of grating, need the difficulty that the customer field installation faces, 4. reduced the site occupation and the other problems that will occur after occupying the site because of installing the type of grating.

Claims

1. A planetary mixer with a protective device, comprising a frame (1), an upper barrel (6), a mixing barrel (8), a mixing assembly (7), and a power device (2) for driving the mixing assembly, wherein the frame comprises a crossbeam (101) and a longitudinal beam (102), the upper barrel (6) is fixed on the crossbeam (101), the mixing barrel (8) is located below the upper barrel, and when the upper barrel and the mixing barrel are opened, an operation entrance is formed between the upper barrel and the mixing barrel, characterized in that: The device also includes a protective device, an audible and visual alarm (4), and a control system (3). The protective device is a diffuse reflection grating (5). The diffuse reflection grating is mounted on a crossbeam outside the upper barrel and is used to generate a protective light curtain at the operation entrance. The control system (3) is electrically connected to the power device (2), the diffuse reflection grating (5), and the audible and visual alarm (4). When the light signal of the diffuse reflection grating is blocked, the control system controls the power device to stop working and / or controls the audible and visual alarm to emit an audible and visual alarm.

2. A planetary mixer with a protective device according to claim 1, characterized in that: One side of the upper barrel (6) is close to the longitudinal beam (102), and the diffuse reflection grating is composed of a side grating (51), a side grating (52) and a front grating (53). The side grating (51), the side grating (52) and the front grating are arranged in a U-shape and fixed on the crossbeam. The front grating is fixed on the crossbeam on the side of the upper barrel away from the longitudinal beam.

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