CN115445793A - Safety protection device for opening of shell of horizontal screw machine and control method - Google Patents
Safety protection device for opening of shell of horizontal screw machine and control method Download PDFInfo
- Publication number
- CN115445793A CN115445793A CN202210948668.3A CN202210948668A CN115445793A CN 115445793 A CN115445793 A CN 115445793A CN 202210948668 A CN202210948668 A CN 202210948668A CN 115445793 A CN115445793 A CN 115445793A
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- China
- Prior art keywords
- travel switch
- horizontal screw
- machine
- shell
- screw machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
- B04B7/06—Safety devices ; Regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
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- Mechanisms For Operating Contacts (AREA)
Abstract
The utility model provides a safety arrangement is opened to spiral shell machine casing crouches, two travel switch, travel switch installs one side on the frame, and travel switch's guide arm top links to each other with the one end of clamp plate, and the other end of clamp plate is fixed in the border of upper housing through housing screw, and one side that travel switch was kept away from to the upper housing is through connecting piece and frame, and lower casing is installed on the frame to be connected with the laminating of upper housing mutually. The safety protection device has the advantages of simple structure, ingenious design, low cost and convenience in use, realizes the safety protection function of opening the machine shell through the travel switch and the pressing plate, and improves the safety by 100 percent.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a horizontal screw machine shell opening safety protection device and a control method.
Background
The horizontal screw machine is a general-purpose device for performing solid-liquid separation by using centrifugal force generated by high-speed rotation: after the separated material enters the drum, the solid phase is quickly settled to the inner wall of the drum and the liquid phase is settled to the surface of the solid phase under the action of centrifugal force because of the density difference between the solid and the liquid. The rotary drum and the spiral rotate in the same direction, a rotation speed difference exists between the rotary drum and the spiral, a solid phase is pushed to a slag hole at the small end of the rotary drum under the action of the spiral, a liquid phase is naturally discharged through a liquid outlet on a large end cover shaft, the machine shell is installed on the machine base of the horizontal screw machine, rotary members such as the rotary drum work in the machine shell, the horizontal screw machine is a machine rotating at a high speed, and the machine shell must be in a locking closing state during normal work, so that the rotary part of the horizontal screw machine is protected safely. When overhauing the spiral shell machine crouches at engineering actual scene, the casing usually need be opened to the maintenance personal, overhaul the completion back, will close the casing and just can restart the spiral shell machine crouches behind the locking casing, but maintenance personal is convenient sometimes, often just starts the spiral shell machine crouches under the condition that the casing was opened, under the effect of high-speed centrifugal force, the rotary drum rotating part has small parts such as screw to throw out easily, this just leads to the fact the incident easily, cause the injury for the field personnel, bring the potential safety hazard for manufacturing enterprise.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a horizontal screw machine shell opening safety protection device and a control method.
The invention provides a safety protection device for opening a shell of a horizontal screw machine, which comprises two travel switches (4), wherein the travel switches (4) are arranged on one side of a machine base (5), the top ends of guide rods of the travel switches (4) are connected with one end of a pressing plate (3), the other end of the pressing plate (3) is fixed on the edge of an upper shell (1) through a compression screw (2), one side of the upper shell (1), which is far away from the travel switches (4), is connected with the machine base (5) through a connecting piece, and a lower shell (6) is arranged on the machine base (5) and is in fit connection with the upper shell (1).
As a further technical scheme of the invention, the travel switch (4) adopts a direct-acting travel switch, the travel switch (4) comprises a guide rod (41), a spring (42), a normally open contact (44) and a normally closed contact (43), the spring (42) is sleeved on the guide rod (41), the normally open contact (44) is installed at the bottom end of the guide rod (41), and the normally closed contact (43) is installed at the middle section of the guide rod (41).
Furthermore, the connecting piece comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are hinged to form a rotating pair, the first connecting rod is connected with the upper shell (1), and the second connecting rod is fixedly connected to the base (5).
Furthermore, the upper shell (1) can be fixedly connected with the lower shell (6) through a compression screw (2).
Furthermore, the signal end of the travel switch (4) is connected with an electric cabinet of the horizontal screw machine.
The invention also provides a control method of the horizontal screw machine shell opening safety protection device, in particular,
if the normally open contacts (44) of the two travel switches are closed and the normally closed contacts (43) are opened, the horizontal screw machine is started, and if the two normally open contacts (44) are opened and the normally closed contacts (43) are closed, the horizontal screw machine cannot be started;
when the upper machine shell (1) is closed and the compression screw (2) is in a locking state, the guide rod (41) in the travel switch (4) is pressed downwards by the pressure plate (3), the normally closed contact (43) is opened, the normally open contact (44) is closed, a signal of the normally open contact is transmitted to the electric cabinet of the horizontal screw machine, and the electric cabinet starts the horizontal screw machine;
after the upper machine shell (1) is opened, the normally closed contact (43) is closed and the normally open contact (44) is opened under the elastic force action of the spring (42) in the stroke switch (4), and the signal of the normally closed contact is transmitted to the electric cabinet of the horizontal screw machine, so that the electric cabinet cannot start the horizontal screw machine.
The safety protection device has the advantages of simple structure, ingenious design, low cost, convenience in use and 100% improvement in safety, and the safety protection function of opening the machine shell is realized through the travel switch and the pressing plate.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of the operation of the lower stroke switch of the upper housing in the closed state according to the present invention;
fig. 3 is a schematic diagram of the operation of the stroke switch in the open state of the upper case according to the present invention.
In the figure: 1. the device comprises an upper shell, 2 compression screws, 3 pressing plates, 4 travel switches, 5 engine bases, 6 lower shell, 41 guide rods, 42 springs, 43 normally closed contacts and 44 normally open contacts.
Detailed Description
Referring to fig. 1, in the present embodiment, there is provided a safety protection device for opening a housing of a horizontal screw machine, two travel switches 4, where the travel switches 4 are installed on one side of a machine base 5, a top end of a guide rod of each travel switch 4 is connected to one end of a pressing plate 3, the other end of the pressing plate 3 is fixed to an edge of an upper housing 1 through a pressing screw 2, one side of the upper housing 1, which is far away from the travel switches 4, is connected to the machine base 5 through a connecting member, and a lower housing 6 is installed on the machine base 5 and is attached to the upper housing 1.
The travel switch 4 is a direct-acting travel switch, the travel switch 4 comprises a guide rod 41, a spring 42, a normally open contact 44 and a normally closed contact 43, the spring 42 is sleeved on the guide rod 41, the normally open contact 44 is mounted at the bottom end of the guide rod 41, and the normally closed contact 43 is mounted at the middle section of the guide rod 41.
The connecting piece includes head rod and second connecting rod, and head rod and second connecting rod are articulated mutually, constitute the revolute pair, and head rod links to each other with upper casing 1, and the second connecting rod links firmly on frame 5.
The upper shell 1 can be fixedly connected with the lower shell 6 through the compression screw 2.
The signal end of the travel switch 4 is connected with the electric cabinet of the horizontal screw machine.
The control method of the device comprises the following steps:
referring to fig. 2 and 3, if the normally open contacts 44 of the two travel switches are closed and the normally closed contacts 43 are opened, the horizontal screw machine is started, and if the two normally open contacts 44 are opened and the normally closed contacts 43 are closed, the horizontal screw machine cannot be started;
when the upper machine shell 1 is closed and the compression screw 2 is in a locking state, the guide rod 41 in the travel switch 4 is pressed downwards by the pressure plate 3, the normally closed contact 43 is opened, the normally open contact 44 is closed, a signal of the normally open contact is transmitted to the electric cabinet of the horizontal screw machine, and the electric cabinet starts the horizontal screw machine;
after the upper machine shell 1 is opened, under the elastic force of the spring 42 in the stroke switch 4, the normally closed contact 43 is closed, the normally open contact 44 is opened, and at the moment, a signal of the closed normally closed contact is transmitted to the electric cabinet of the horizontal screw machine, so that the electric cabinet cannot start the horizontal screw machine.
The device has the advantages of simple structure, ingenious design, low cost, convenient use and 100% improvement of safety, and realizes the safety protection function of opening the casing through the travel switch and the pressing plate.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is intended to be protected by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a safety arrangement is opened to spiral shell machine casing crouches, a serial communication port, includes two travel switch (4), travel switch (4) install the one side on frame (5), the guide arm top of travel switch (4) links to each other with the one end of clamp plate (3), the border that the other end of clamp plate (3) was fixed in last casing (1) through housing screw (2), go up one side that travel switch (4) were kept away from in casing (1) pass through the connecting piece with frame (5), lower casing (6) install in on frame (5), and with go up casing (1) and laminate mutually and be connected.
2. The horizontal screw machine shell opening safety protection device according to claim 1, wherein the travel switch (4) is a direct-acting travel switch, the travel switch (4) comprises a guide rod (41), a spring (42), a normally open contact (44) and a normally closed contact (43), the spring (42) is sleeved on the guide rod (41), the normally open contact (44) is installed at the bottom end of the guide rod (41), and the normally closed contact (43) is installed at the middle section of the guide rod (41).
3. The safety protection device for opening of a horizontal screw machine shell according to claim 1, wherein the connecting member comprises a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are hinged to form a revolute pair, the first connecting rod is connected with the upper shell (1), and the second connecting rod is fixedly connected with the machine base (5).
4. A horizontal screw machine casing opening safety protection device according to claim 1, characterized in that the upper casing (1) can be fixedly connected with the lower casing (6) through the compression screw (2).
5. The safety protection device for opening of the shell of the horizontal screw machine according to claim 1, wherein a signal end of the travel switch (4) is connected with an electric cabinet of the horizontal screw machine.
6. A control method of a horizontal screw machine shell opening safety protection device is characterized in that specifically,
if the normally open contacts (44) of the two travel switches are closed and the normally closed contacts (43) are opened, the horizontal screw machine is started, and if the two normally open contacts (44) are opened and the normally closed contacts (43) are closed, the horizontal screw machine cannot be started;
when the upper machine shell (1) is closed and the compression screw (2) is in a locking state, the guide rod (41) in the travel switch (4) is pressed downwards by the pressure plate (3), the normally closed contact (43) is opened, the normally open contact (44) is closed, a signal of the normally open contact is transmitted to the electric cabinet of the horizontal screw machine, and the electric cabinet starts the horizontal screw machine;
after upper housing (1) is opened, under the spring action of spring (42) in stroke switch (4), normally closed contact (43) are closed, and normally open contact (44) are opened, and the closed signal transmission of normally closed contact arrives the spiral shell machine electric cabinet that crouches this moment, and the electric cabinet can't start the spiral shell machine that crouches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948668.3A CN115445793A (en) | 2022-08-09 | 2022-08-09 | Safety protection device for opening of shell of horizontal screw machine and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210948668.3A CN115445793A (en) | 2022-08-09 | 2022-08-09 | Safety protection device for opening of shell of horizontal screw machine and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115445793A true CN115445793A (en) | 2022-12-09 |
Family
ID=84296204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210948668.3A Pending CN115445793A (en) | 2022-08-09 | 2022-08-09 | Safety protection device for opening of shell of horizontal screw machine and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115445793A (en) |
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2022
- 2022-08-09 CN CN202210948668.3A patent/CN115445793A/en active Pending
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