CN115122202A

CN115122202A - Hand-held grinder

Info

Publication number: CN115122202A
Application number: CN202110313017.2A
Authority: CN
Inventors: 袁志华
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2022-09-30
Anticipated expiration: 2041-03-24
Also published as: CN115122202B

Abstract

The application provides a handheld grinder belongs to oil and gas construction technical field. The grinder includes: the nozzle comprises a body, a handle, a blade, a shade and a nozzle; the shade, the blades and the nozzle are respectively arranged at the front end of the body, and the handle is arranged on the side surface of the body; the shape of the shade is bowl-shaped, and the shade is sleeved outside the blade; the nozzle is arranged inside the shade; a handle for being held to manipulate the body; the blade is used for polishing the working surface of the part to be derusted; the nozzle is used for spraying water to the working surface so as to eliminate sparks generated during grinding of the working surface; the shade is used for collecting waste water and scrap iron generated during grinding operation. The nozzle arranged on the grinder can spray water to the working surface when the blade polishes the working surface of the part to be derusted, so that sparks generated by high-speed polishing of the blade on the working surface can be eliminated, the condition of fire caused when the part to be derusted is polished in a natural gas production place is avoided, and the danger of derusting work is reduced.

Description

Hand-held grinder

Technical Field

The application relates to the technical field of petroleum and natural gas construction, in particular to a handheld grinding machine.

Background

In the oil and gas production industry, because production devices constructed on site are exposed to the atmospheric environment, movable parts such as screw caps, screws and the like on the production devices are easy to rust, the parts need to be periodically derusted and maintained to ensure the normal operation of the production devices, and mechanical derusting is usually performed on the parts to be derusted by using a handheld grinder.

The handheld grinder in the related art comprises a handle and a blade, wherein the handle is held to control the blade to be in contact with a part to be derusted to derust in the derusting operation process, and because the blade is in high-speed contact with the part to be derusted, high-temperature scrap iron, namely sparks, which belongs to a potential fire source, is generated during derusting; and because the natural gas production site belongs to flammable and explosive places, fire hazard is generated when the natural gas production site derusts the rust, and personnel and property loss is easily caused by large accidents, so that the danger of derusting work is increased.

Disclosure of Invention

The embodiment of the application provides a handheld grinder, can reduce the danger of rust cleaning work. The technical scheme is as follows:

in one aspect, a hand held grinder is provided, the grinder comprising: the nozzle comprises a body, a handle, a blade, a shade and a nozzle;

the shade, the blades and the nozzle are respectively arranged at the front end of the body, and the handle is arranged on the side surface of the body;

the shape of the shade is bowl-shaped, and the shade is sleeved outside the blade;

the nozzle is arranged inside the shade;

the handle is used for being held to operate the body;

the blade is used for polishing the working surface of the part to be derusted;

the nozzle is used for spraying water to the working surface so as to eliminate sparks generated when the working surface is polished;

the shade is used for collecting waste water and scrap iron generated during grinding of the working face.

In a possible implementation manner, the grinder further comprises a flow guide pipe, a first groove matched with the flow guide pipe is formed in the body, and the flow guide pipe is arranged in the first groove;

one end of the flow guide pipe is connected with the nozzle, the other end of the flow guide pipe is used for being connected with a water supply device, and the water supply device is used for conveying water to the flow guide pipe;

and the flow guide pipe is used for supplying water to the nozzle.

In a possible implementation manner, the grinder further comprises a pressurizing device, the pressurizing device is arranged on the body, and the pressurizing device is connected with the nozzle;

the pressurizing device is used for controlling the pressure of the water sprayed by the nozzle.

In a possible implementation manner, the pressurizing device comprises a booster pump and a first switch, a second groove matched with the booster pump is arranged on the body, the booster pump is arranged in the second groove, and the first switch is arranged on the upper surface of the body;

two ends of the booster pump are respectively connected with the first switch and the nozzle;

the first switch is used for controlling the pressure of the water sprayed by the nozzle through the booster pump.

In a possible implementation manner, the grinder further comprises a second switch, the second switch is arranged on the upper surface of the body, and the second switch is connected with the nozzle;

and the second switch is used for controlling the water quantity sprayed by the nozzle.

In a possible implementation manner, the inner surface of the shade is provided with a plurality of ribs which are transversely distributed on the inner surface of the shade;

the plurality of ribs are used for guiding the waste water and the scrap iron.

In one possible implementation, the nozzle is an atomizing nozzle for spraying atomized water toward the work surface.

In a possible implementation manner, a plurality of air diffusing holes are formed in the cover, and the air diffusing holes are used for exhausting mist in the cover.

In one possible implementation, a rotor is arranged on the nozzle;

the rotor is used for adjusting the water spraying direction of the nozzle.

In a possible implementation manner, a rotating shaft is arranged at the front end of the body, and a first central hole and a second central hole matched with the rotating shaft are respectively arranged at the centers of the blade and the shade;

the blade is connected with the body through the rotating shaft and the first central hole;

the shade is connected with the body through the rotating shaft and the second center hole.

The technical scheme provided by the embodiment of the application has the beneficial effects that at least:

the embodiment of the application provides a handheld grinder, because the nozzle that this grinder set up can be when the blade is polished the working face of waiting to rust remove part water spray to the working face, just so can eliminate because the spark that the working face produced is polished at a high speed to the blade, and then avoided polishing in the natural gas production place and wait to rust remove the condition that causes the conflagration when the part to reduce the danger of rust removal work.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a block diagram of a hand grinder according to an embodiment of the present disclosure;

fig. 2 is a block diagram of a hand-held grinder according to an embodiment of the present disclosure;

fig. 3 is a structural diagram of a mask according to an embodiment of the present disclosure.

The reference numerals in the figures are denoted respectively by:

1-body;

2-a handle;

3-a blade;

4-masking;

401-ribs;

402-air dispersing holes;

5-a nozzle;

6-a flow guide pipe;

7-a pressurizing device;

701-a booster pump;

702-a first switch;

8-second switch.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The embodiment of the application provides a handheld grinder, see fig. 1, the grinder includes: body 1, handle 2, blade 3, mask 4 and nozzle 5.

The shade 4, the blades 3 and the nozzle 5 are respectively arranged at the front end of the body 1, and the handle 2 is arranged at the side surface of the body 1.

The shape of the shade 4 is bowl-shaped, and the shade 4 is sleeved outside the blade 3.

The nozzle 5 is arranged inside the mask 4.

A handle 2 for being held to manipulate the body 1.

And the blade 3 is used for polishing the working surface of the part to be derusted.

And the nozzle 5 is used for spraying water to the working surface so as to eliminate sparks generated when the working surface is polished.

And the shade 4 is used for collecting waste water and scrap iron generated during grinding operation.

The embodiment of the application provides a handheld grinder, because the nozzle 5 that this grinder set up can be when the blade 3 polishes the working face of treating the rust cleaning part and water spray to the working face, just so can eliminate because the spark that the blade 3 high speed polished the working face and produced, and then avoided polishing in the natural gas production place and treated the condition that causes the conflagration when removing rust part to the danger of rust cleaning work has been reduced.

Wherein, body 1 includes shell and motor, and the motor setting is in the inside of shell, and the motor is driving motor, and the motor is used for providing drive power for handheld abrasive machine.

Wherein the motor may be disposed at a middle or rear end of the inside of the housing.

Wherein, the shell is made of hard high-temperature-resistant insulating plastic, and has high performance, high strength, bright surface, excellent heat resistance and hardness; for example, the housing may be made of nylon glass fiber.

Referring to fig. 2, a handle 2 is provided at a side of the housing for being held to manipulate the body 1.

The handle 2 comprises a screw rod and a rubber sleeve, and the rubber sleeve is sleeved outside the screw rod.

Wherein, the one end that the gum cover was worn out at the top of screw rod is equipped with the external screw thread, and the side of shell is equipped with the internal thread hole that matches with the external screw thread, and handle 2 and shell pass through external screw thread and internal thread jogged joint.

Wherein, be equipped with a plurality of pits and a plurality of bump on the gum cover, a plurality of pits and a plurality of bump have increased the hand to the frictional force of handle 2, can prevent that handle 2 from slipping on hand.

The position of the handle 2 may be set and changed as required, which is not specifically limited in the embodiment of the present application; for example, the handle 2 may be provided at the front of the side or at the middle of the side.

With continued reference to fig. 2, the blade 3 is arranged at the front end of the body 1 and is used for polishing the working surface of the part to be derusted.

Wherein, the front end of body 1 is equipped with the pivot, and the center of blade 3 is equipped with the first centre bore that matches with the pivot, and blade 3 is connected through pivot and first centre bore with body 1.

Wherein, the pivot setting is at the lower surface of the front end of body 1, and blade 3 is connected with the lower surface of the front end of body 1.

Wherein, the pivot is connected for coaxial rotation with first centre bore, and when the pivot passed through the drive power of motor and rotated at a high speed, the pivot drove the coaxial high-speed rotation of blade 3.

The lower surface of the blade 3 is in contact with the working surface of the part to be derusted and is used for polishing the working surface of the part to be derusted.

Wherein, the shape of blade 3 is disk structure, and the material of blade 3 can be metal blade 3 and dull polish blade 3.

In a possible implementation mode, the blade 3 is a frosted blade 3, and the handheld grinder can remove rust on a part to be removed through the blade 3.

In another possible implementation, the blade 3 is a metal blade 3, and a hand-held grinder can cut pipes, steel plates, and the like through the blade 3.

With continued reference to fig. 2, the nozzle 5 is provided at the front end of the body 1, and the nozzle 5 is provided inside the mask 4; and the nozzle 5 is used for spraying water to the working surface so as to eliminate sparks generated when the working surface is polished.

Wherein, nozzle 5 is located the inside of shade 4, and is located the below of blade 3, and nozzle 5 is from the below of blade 3 towards the operation face that blade 3 ground, sprays water to the operation face.

The distance between the nozzle 5 and the working surface can be set and changed according to needs, and is not particularly limited in the embodiment of the application; for example, the distance between the nozzle 5 and the work surface is 3 to 5 cm.

The nozzle 5 is an atomizing nozzle for spraying atomized water to the work surface.

Wherein, the shape of the nozzle 5 can be flat mouth shape, which is convenient for the nozzle 5 to spray atomized water.

In the embodiment of the present application, atomized water is sprayed onto the work surface, so that the water is brought into contact with the work surface in a mist form, thereby preventing the sprayed water from being scattered by the blades 3 rotating at a high speed, and further effectively ensuring the humidity of the work surface.

Wherein, the nozzle 5 is provided with a rotor; and the rotor is used for adjusting the water spraying direction of the nozzle 5.

Wherein, the rotor can be arranged at the rear end of the nozzle 5, and the connection mode of the rotor and the nozzle 5 can be a threaded connection or a flexible connection.

In the embodiment of the application, the rotor is arranged on the nozzle 5, so that the direction of water sprayed by the nozzle 5 can be conveniently adjusted, and the direction of water sprayed by the nozzle 5 is aligned with the working surface. And, because the nozzle 5 is located below the blade 3, when the blade 3 needs to be replaced, the direction of the nozzle 5 is adjusted through the rotor, the nozzle 5 is adjusted to one side of the blade 3, and then the blade 3 is convenient to replace.

Wherein, abrasive machine still includes honeycomb duct 6, is equipped with the first groove that matches with honeycomb duct 6 on the body 1, and honeycomb duct 6 sets up in the first groove.

One end of the guide pipe 6 is connected with the nozzle 5, the other end of the guide pipe 6 is connected with a water supply device, and the water supply device is used for conveying water to the guide pipe 6; and a draft tube 6 for supplying water to the nozzle 5.

In a possible implementation manner, the first groove is arranged outside the body 1 and on the outer surface of the shell of the body 1, so that after the flow guide pipe 6 is fixed in the first groove, workers can observe the working condition of the flow guide pipe 6 conveniently.

In another possible implementation, the first groove is provided inside the body 1, on the inner surface of the casing of the body 1, which facilitates the integration of the flow duct 6 with the body 1, avoiding the situation in which the flow duct 6 is exposed outside and easily damaged.

Wherein, the water supply device can be provided with a bottom valve which is used for controlling the water in the water supply device to enter the draft tube 6.

The water supply device is a movable water source storage, so that a water source can be conveniently added into the water supply device, and the water supply device can move along with the position of the hand-held grinder.

The capacity of the water supply device can be set and changed according to needs, and is not particularly limited in the embodiment of the application; for example, the water supply may have a capacity of 2L.

Wherein, the distance between the draft tube 6 and the water supply device exceeds 1.5 meters, and the draft tube can be arranged and changed according to the needs; for example, the distance between the draft tube 6 and the water supply device is 1.8 meters.

The length of the flow guide tube 6 can be set and changed according to the needs, which is not specifically limited in the embodiment of the present application.

The diameter of the draft tube 6 can be set and changed according to the needs, which is not specifically limited in the embodiment of the present application; the diameter of the draft tube 6 is, for example, 2 mm.

Wherein, the one end that honeycomb duct 6 and nozzle 5 are connected is fixed in the bottom surface of shade 4, and is the barb shape, makes nozzle 5 can be from down up to the operation face water spray of polishing towards the lower surface of blade 3.

Wherein, the honeycomb duct 6 can be a plastic hose, light in weight, easy deformation, the installation of being convenient for.

In a possible implementation manner, the grinder further comprises a pressurizing device 7, wherein the pressurizing device 7 is arranged on the body 1, and the pressurizing device 7 is connected with the nozzle 5; and a pressurizing device 7 for controlling the pressure of the water sprayed from the nozzle 5.

The pressurizing device 7 comprises a booster pump 701 and a first switch 702, a second groove matched with the booster pump 701 is arranged on the body 1, the booster pump 701 is arranged in the second groove, and the first switch 702 is arranged on the upper surface of the body 1.

Wherein, two ends of the booster pump 701 are respectively connected with the first switch 702 and the nozzle 5; a first switch 702 for controlling the pressure of the water ejected from the nozzle 5 by the pressurizing pump 701.

Wherein the second groove is provided on the housing of the body 1.

In a possible implementation manner, the second groove is arranged inside the casing, so that after the booster pump 701 is fixed in the second groove, the booster pump 701 is convenient to integrate with the body 1, and the situation that the booster pump 701 is exposed outside and easily damaged is avoided.

In another possible implementation, the second groove is disposed outside the housing, and a top surface of the second groove is provided with a cover plate for enclosing the booster pump 701 in the second groove, so that the mounting and dismounting of the booster pump 701 is facilitated.

Wherein, the pressurizing pump 701 is connected with the nozzle 5 to control the pressure of the water sprayed from the nozzle 5.

In a possible implementation, the booster pump 701 is connected to the nozzle 5 through the flow conduit 6, and the booster pump 701 controls the pressure of the water sprayed from the nozzle 5 by controlling the pressure of the water flowing from the flow conduit 6 to the nozzle 5.

In another possible implementation, the booster pump 701 is directly connected to the nozzle 5, and the booster pump 701 controls the pressure of the water sprayed from the nozzle 5 by controlling the pressure of the water in the nozzle 5.

The power of the booster pump 701 may be set and changed as needed, which is not specifically limited in the embodiment of the present application; for example, the booster pump 701 has a power of 5V.

The first switch 702 may have a plurality of positions, so as to control the pressure of the water sprayed from the nozzle 5 more precisely.

In another possible implementation, the first switch 702 may also be disposed on a side surface or a bottom surface of the body 1.

In the embodiment of the application, the pressurizing device 7 can ensure that the water sprayed from the nozzle 5 overcomes the influence of gravity, atomized water is sprayed after pressurization, and the sprayed atomized water can reach the working surface to be cooled, so that sparks are eliminated.

With continued reference to fig. 2, the grinder further comprises a second switch 8, the second switch 8 is arranged on the upper surface of the body 1, and the second switch 8 is connected with the nozzle 5; and a second switch 8 for controlling the amount of water sprayed from the nozzle 5.

In a possible implementation, the second switch 8 is connected to the nozzle 5 through the flow duct 6, and the second switch 8 controls the amount of water sprayed by the nozzle 5 by controlling the amount of water flowing from the flow duct 6 to the nozzle 5.

In another possible implementation manner, the second switch 8 is directly connected to the nozzle 5, the second switch 8 controls the amount of water sprayed from the nozzle 5 by controlling the opening degree of the nozzle 5, and the nozzle 5 may be provided with a plurality of opening degrees, each opening degree may spray a different amount of water.

Wherein, the second switch 8 can have a plurality of gears, and then can be more accurate the control nozzle 5 water yield that spouts.

In another possible implementation, the second switch 8 may also be disposed on a side or bottom surface of the body 1.

In the embodiment of the present application, the amount of water ejected from the nozzle 5 can be controlled by providing the second switch 8, so that the amount of water ejected from the nozzle 5 can be adjusted according to actual operation requirements.

With continued reference to fig. 2, the mask 4 is arranged at the front end of the body 1, the shape of the mask 4 is bowl-shaped, and the mask 4 is sleeved outside the blades 3; and the shade 4 is used for collecting waste water and scrap iron generated during grinding operation.

Wherein, the center of shade 4 is equipped with the second centre bore that matches with the pivot of body 1, and shade 4 is connected through pivot and second centre bore with body 1.

Wherein, the pivot sets up the lower surface at the front end of body 1, and shade 4 is connected at the lower surface of the front end of body 1.

In a possible implementation manner, the rotating shaft is connected with the second center hole in a relative rotation manner, and the shade 4 is fixed when the rotating shaft rotates at a high speed by the driving force of the motor.

In another possible implementation manner, the rotating shaft is coaxially and rotatably connected with the second central hole, and when the rotating shaft is rotated by the driving force of the motor, the rotating shaft drives the shade 4 to coaxially rotate.

The upper top surface of the upper end of the shade 4 is positioned above the blades 3, the circumferential peripheral surface of the lower end of the shade 4 is positioned outside the blades 3, the size of the circumferential peripheral surface of the shade 4 is matched with that of the blades 3, and the diameter of the circumferential peripheral surface of the shade 4 is 3-8cm larger than that of the blades 3, so that the blades 3 can freely rotate in the shade 4; for example, the diameter of the circumferential surface is 5cm larger than the diameter of the blade 3.

Referring to fig. 3, the inner surface of the mask 4 is provided with a plurality of ribs 401, and the plurality of ribs 401 are transversely distributed on the inner surface of the mask 4; and the plurality of ribs 401 are used for guiding wastewater and scrap iron.

Wherein, many beads 401 are connected in order, make waste water and iron fillings along bead 401 water conservancy diversion to the lower extreme of shade 4 in order, discharge through the lower extreme of shade 4.

Wherein, many beads 401 have certain gradient respectively, and the angle of gradient can be 5-30 degrees, and like this, be convenient for waste water and iron fillings collect the bead 401 back on the shade 4, waste water and iron fillings are along the lower extreme of the bead 401 water conservancy diversion to shade 4 that has certain gradient to waste water and iron fillings of being convenient for more are derived from shade 4.

The number of the ribs 401 may be set and changed as needed, and is not specifically limited in the embodiment of the present application; for example, the number of ribs 401 may be 3, 5, 8, etc.

Wherein, shade 4 is transparent, soft materials, conveniently observes the operation progress, and is convenient for change blade 3, can normally dismouting blade 3 after shade 4 overturns.

With continued reference to fig. 3, the mask 4 is provided with a plurality of air diffusing holes 402, and the plurality of air diffusing holes 402 are used for discharging the mist in the mask 4.

The number of the air diffusing holes 402 may be set and changed as needed, which is not particularly limited in the embodiment of the present application.

The size of the air diffusing holes 402 may be set and changed as needed, which is not specifically limited in this embodiment.

Wherein, because blade 3 produces high temperature iron fillings when polishing the operation face of treating the rust cleaning part, nozzle 5 spun atomized water can produce the fog with high temperature iron fillings after contacting, and the fog gathering is back in shade 4, influences the progress of polishing that the staff observed blade 3. In this application embodiment, through set up scattered gas hole 402 on shade 4, can discharge the fog of the in-process gathering of polishing in shade 4 to make things convenient for the staff to observe the operation progress.

In this application embodiment, establish blade 3's shade 4 through setting up the cover, and establish shade 4 into bowl structure, can ensure to polish the iron fillings and the waste water control that produce in the minizone, the later stage of being convenient for is to the collection and the processing of waste water and iron fillings.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hand held grinder, characterized in that, the grinder includes: the device comprises a body (1), a handle (2), blades (3), a shade (4) and a nozzle (5);

the shade (4), the blades (3) and the nozzle (5) are respectively arranged at the front end of the body (1), and the handle (2) is arranged on the side surface of the body (1);

the shape of the shade (4) is bowl-shaped, and the shade (4) is sleeved outside the blade (3);

the nozzle (5) is arranged inside the shade (4);

the handle (2) is used for being held to operate the body (1);

the blade (3) is used for polishing the working surface of the part to be derusted;

the nozzle (5) is used for spraying water to the working surface so as to eliminate sparks generated when the working surface is polished;

the shade (4) is used for collecting waste water and scrap iron generated during grinding of the working face.

2. The hand-held grinder according to claim 1, further comprising a flow guide tube (6), wherein the body (1) is provided with a first groove matched with the flow guide tube (6), and the flow guide tube (6) is arranged in the first groove;

one end of the draft tube (6) is connected with the nozzle (5), the other end of the draft tube (6) is used for being connected with a water supply device, and the water supply device is used for conveying water to the draft tube (6);

the draft tube (6) is used for supplying water to the nozzle (5).

3. The hand-held grinder of claim 1, further comprising a pressurizing device (7), the pressurizing device (7) being provided on the body (1), the pressurizing device (7) being connected with the nozzle (5);

the pressurizing device (7) is used for controlling the pressure of the water sprayed by the nozzle (5).

4. The hand-held grinder of claim 3, wherein the pressurizing device (7) comprises a pressurizing pump (701) and a first switch (702), a second groove matched with the pressurizing pump (701) is arranged on the body (1), the pressurizing pump (701) is arranged in the second groove, and the first switch (702) is arranged on the upper surface of the body (1);

two ends of the booster pump (701) are respectively connected with the first switch (702) and the nozzle (5);

the first switch (702) is used for controlling the pressure of the water sprayed by the nozzle (5) through the booster pump (701).

5. The hand-held grinder of claim 1, further comprising a second switch (8), the second switch (8) being disposed on an upper surface of the body (1), the second switch (8) being connected to the nozzle (5);

the second switch (8) is used for controlling the amount of water sprayed by the nozzle (5).

6. A hand-held grinder as claimed in claim 1, characterised in that the inner surface of the mask (4) is provided with a plurality of ribs (401), the plurality of ribs (401) being distributed transversely on the inner surface of the mask (4);

the ribs (401) are used for guiding the waste water and the scrap iron.

7. Hand-held grinder according to claim 1, characterised in that the nozzle (5) is an atomising nozzle for spraying atomised water towards the work surface.

8. The hand-held grinder of claim 1, wherein the mask (4) is provided with a plurality of air-diffusing holes (402), and the air-diffusing holes (402) are used for discharging mist in the mask (4).

9. Hand-held grinder as claimed in claim 1, characterized in that the nozzle (5) is provided with a rotor;

the rotor is used for adjusting the water spraying direction of the nozzle (5).

10. The hand-held grinder according to claim 1, characterized in that the front end of the body (1) is provided with a rotating shaft, and the centers of the blade (3) and the mask (4) are respectively provided with a first center hole and a second center hole matched with the rotating shaft;

the blade (3) is connected with the body (1) through the rotating shaft and the first central hole;

the shade (4) is connected with the body (1) through the rotating shaft and the second center hole.