JPH027012Y2 - - Google Patents
Info
- Publication number
- JPH027012Y2 JPH027012Y2 JP19076686U JP19076686U JPH027012Y2 JP H027012 Y2 JPH027012 Y2 JP H027012Y2 JP 19076686 U JP19076686 U JP 19076686U JP 19076686 U JP19076686 U JP 19076686U JP H027012 Y2 JPH027012 Y2 JP H027012Y2
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- flow rate
- air flow
- projection nozzle
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 17
- 238000005422 blasting Methods 0.000 claims description 10
- 230000007423 decrease Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 208000033748 Device issues Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Arrangements Characterized By The Use Of Fluids (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、各種被処理物に圧縮空気と共に投射
材を投射してバリ取り、スケール落とし、シヨツ
トピーニング等を行うエアブラスト機において、
使用される投射ノズルの摩耗量を検知する投射ノ
ズルの摩耗量感知装置に関するものである。[Detailed description of the invention] (Field of industrial application) The present invention is an air blast machine that projects a blasting material together with compressed air onto various objects to be processed for deburring, descaling, shot peening, etc.
The present invention relates to a projection nozzle wear detection device that detects the wear amount of a projection nozzle used.
（従来の技術）
一般に、エアブラスト機に使用される投射ノズ
ルは耐摩耗鋳鉄、セラミツクスその他の耐摩耗性
材料より形成されているが、投射ノズル中を高速
度で通過するシヨツト、グリツト等の投射材によ
り摩耗し、その通路内壁面が拡大される。この結
果、投射ノズルより噴出する投射材と圧縮空気と
の混合体において、圧縮空気量が増加して投射材
の投射密度が低下し、投射ノズルの性能が低下す
ることになつて仕上げ速度や仕上げ精度が不安定
となり、製品の品質管理がやりにくく、生産性も
低下する等の欠点がある。この対策としてまず、
投射ノズルの摩耗状況を調べることが必要となる
が、現在これは作業者が目視により大体の情況を
判断するか或いは簡単なスケールにより測定して
摩耗程度を把握するのが殆んどであつた。(Prior Art) Generally, the projection nozzle used in an air blast machine is made of wear-resistant cast iron, ceramics, or other wear-resistant materials. The material wears away, and the inner wall surface of the passage becomes enlarged. As a result, in the mixture of shot material and compressed air that is ejected from the shot nozzle, the amount of compressed air increases and the shot density of the shot material decreases, which reduces the performance of the shot nozzle and reduces the finishing speed and finish. There are drawbacks such as unstable accuracy, difficulty in product quality control, and reduced productivity. As a countermeasure, first,
It is necessary to check the wear status of the projection nozzle, but at present, this is mostly done by operators who judge the general situation visually or by measuring with a simple scale to understand the degree of wear. .
（考案が解決しようとする問題点）
このような目視あるいは簡単なスケールによる
測定では、不正確であるうえに手数がかかり、し
かも粉塵等の多い悪い環境の研掃作業現場では困
難である。(Problems to be Solved by the Invention) Such measurements by visual inspection or by using a simple scale are inaccurate and time-consuming, and are difficult to perform at a cleaning work site in a bad environment with a lot of dust.
（問題点を解決するための手段）
本考案は投射ノズル内径と消費圧縮空気流量と
は比例関係にあることに着目し、空気流量計を使
用して自動的に投射ノズルの摩耗を検知可能とし
て前記のような問題点を解決したエアブラスト機
における投射ノズルの摩耗量感知装置に関するも
ので、投射材を貯溜する圧力タンクの投射材排出
孔に投射材と圧縮空気との合流管を接続させて該
合流管の一端に圧縮空気管路を接続するとともに
他端に投射ノズルを接続したエアブラスト機にお
いて、前記圧縮空気管路に投射ノズルの摩耗によ
り増加する圧縮空気流量に対応して移動する検出
体を備えた空気流量計を設け、該空気流量計には
所定の位置に達した前記検出体を検知する光電式
感知装置を取付けるとともに、該光電式感知装置
を前記検出体の検知により作動する警報装置に接
続させたことを特徴とするものである。(Means for solving the problem) This invention focuses on the fact that there is a proportional relationship between the inner diameter of the projection nozzle and the consumed compressed air flow rate, and makes it possible to automatically detect the wear of the projection nozzle using an air flow meter. This device relates to a wear detection device for the blasting nozzle in an air blast machine that solves the above-mentioned problems.The device connects a convergence pipe for the blasting material and compressed air to the blasting material discharge hole of the pressure tank that stores the blasting material. In an air blast machine in which a compressed air pipe is connected to one end of the merging pipe and a projection nozzle is connected to the other end, detecting that the compressed air pipe moves in response to an increased compressed air flow rate due to wear of the projection nozzle. An air flow meter with a body is provided, a photoelectric sensing device is attached to the air flow meter to detect the detection object that has reached a predetermined position, and the photoelectric sensing device is activated by detection of the detection object. It is characterized by being connected to an alarm device.
（作用）
このようなエアブラスト機における投射ノズル
の摩耗感知装置は、投射ノズルの摩耗によつて生
ずるその内径拡大の許容限界より決定される消費
空気流量の値から、空気流量計の流量計本体にお
ける検出体の許容限界時における位置が決まるの
で、この位置に検出体が達したら光電式感知装置
が作動するように発光装置と受光装置を縦軸にそ
れぞれ位置決め固定しておいて空気圧用圧力源を
作動させれば、圧縮空気の一部は圧縮空気管路を
経て合流管へ送給され、該合流管において圧力タ
ンク内より投射材排出孔を経て順次落下してくる
投射材と混合され、その後、この混合流体は投射
ノズルへ送給されて被処理物へ投射されることと
なるが、研掃作業の続行により投射ノズルが摩耗
してその内径が拡大されると、消費される圧縮空
気流量も増加し、これにより流量計本体内の検出
体が前記増加流量に対応して上昇する。そして摩
耗が更に進み、内径拡大量が前記許容限界に達す
ると、その消費圧縮空気流量の増加により検出体
が対応して上昇し、あらかじめ想定された位置に
達すると、光電式感知装置の発光装置、受光装置
間が該検出体により遮断され、警報装置より警報
が発せられる。そこでコツクを締めて作業を中止
し、投射ノズルを交換する。(Function) The wear detection device of the projection nozzle in such an air blast machine detects the flow rate of the air flow meter based on the value of the consumed air flow rate determined from the permissible limit of the inner diameter expansion caused by the wear of the projection nozzle. Since the position of the detected object at the permissible limit is determined, the light emitting device and the light receiving device are positioned and fixed on the vertical axis, respectively, and the pneumatic pressure source is set so that the photoelectric sensing device is activated when the detected object reaches this position. When the compressed air is operated, a part of the compressed air is sent to the confluence pipe through the compressed air pipe, and in the confluence pipe, it is mixed with the projectile material that sequentially falls from the pressure tank through the projectile discharge hole, Afterwards, this mixed fluid is sent to the projection nozzle and projected onto the workpiece, but as the jet nozzle wears out and its inner diameter expands as the cleaning process continues, the compressed air is consumed. The flow rate also increases, which causes the sensing object within the flow meter body to rise in response to the increased flow rate. When the wear progresses further and the internal diameter expansion reaches the above-mentioned allowable limit, the detected object rises correspondingly due to the increase in the consumed compressed air flow rate, and when it reaches the predetermined position, the light emitting device of the photoelectric sensing device , the light receiving device is interrupted by the detection object, and the alarm device issues an alarm. Then I tightened the screw, stopped the work, and replaced the projection nozzle.
（実施例）
次に、本考案はを図示の実施例に基づいて詳細
に説明すれば、１はシヨツト、グリツト等の投射
材を貯溜する圧力タンクで、その底部には投射材
排出孔３を形成する連結筒部２が突設してあり、
該連結筒部２には投射材と圧縮空気との合流管４
がその長手方向の管路５に交差して形成した上部
接続孔６を投射材排出孔３側へ対向させた状態と
して連通状に固定してある。合流管４の管路５の
一端には、後記する空気圧用圧力源１３に接続し
た圧縮空気管路７の端部が接続してあるとともに
他端には、ゴムホース８を介して圧縮空気と共に
投射材を噴出する投射ノズル９の接続してある。
また、圧縮空気管路７は途中の分岐部４０におい
て分岐管路１１に分岐され、該分岐管路１１は圧
力タンクの上部へ接続され、その先端側は圧力タ
ンク１の天井壁部に設けた開閉弁１２へ連通させ
てある。この圧縮空気管路７は空気圧縮機等の空
気圧用圧力源１３に接続され、これに続いて圧縮
空気管路７には空気圧調整ユニツト１４、エアフ
イルタ１５、エアレギユレータ１６、主圧力計１
７、空気流量計１８、コツク１９、空気流量調整
弁２０、圧力計２１が直列として配設してある。
空気流量計１８は第２図に示すように、圧縮空気
の流路となる透明筒状の流量計本体２２を有し、
その下部連結部２３、上部連結部２４それぞれ圧
縮空気管路７に連結されて矢印Ｔで示す方向に圧
縮空気が内部を流通するようにしてあり、２５は
流量計本体２２内に位置されて圧縮空気流中に没
入されてその流量に応じ流量計本体２２内を昇降
可能とされている流量指示用の検出体である。ま
た、流量計本体２２の上、下端の指示筒部２６，
２６にはそれぞれ対称状にアーム２７，２７が突
設してあり、各アーム２７の端部はそれぞれ縦軸
２８，２８により連結されている。２９は両縦軸
２８に一対とされる発光装置３０、受光装置３１
をそれぞれ摺動可能に取付けてなる電源内蔵形の
光電式感知装置で、その受光装置３１にはラン
プ、ブザー等による警報を発する警報装置３が接
続されており、３３は投射材を示す。(Example) Next, the present invention will be explained in detail based on the illustrated embodiment. Reference numeral 1 denotes a pressure tank for storing shot material such as shot and grit, and a shot material discharge hole 3 is provided at the bottom of the tank. A connecting cylinder portion 2 to be formed is provided protrudingly,
The connecting cylinder part 2 has a confluence pipe 4 for projecting material and compressed air.
An upper connecting hole 6 formed to intersect with the longitudinal pipe line 5 is fixed in communication with the projecting material discharge hole 3 in a state facing the side thereof. One end of the conduit 5 of the confluence pipe 4 is connected to an end of a compressed air conduit 7 connected to a pneumatic pressure source 13 (described later), and the other end is connected to a compressed air conduit 7 which is injected with compressed air via a rubber hose 8. A projection nozzle 9 for ejecting material is connected thereto.
Further, the compressed air pipe line 7 is branched into a branch pipe line 11 at a branch part 40 in the middle, and the branch pipe line 11 is connected to the upper part of the pressure tank, and its tip side is provided on the ceiling wall of the pressure tank 1. It is communicated with the on-off valve 12. The compressed air line 7 is connected to a pneumatic pressure source 13 such as an air compressor, and the compressed air line 7 is connected to an air pressure adjustment unit 14, an air filter 15, an air regulator 16, and a main pressure gauge 1.
7. An air flow meter 18, a cock 19, an air flow regulating valve 20, and a pressure gauge 21 are arranged in series.
As shown in FIG. 2, the air flow meter 18 has a transparent cylindrical flow meter body 22 that serves as a flow path for compressed air.
The lower connecting part 23 and the upper connecting part 24 are respectively connected to the compressed air pipe line 7 so that compressed air flows therein in the direction shown by arrow T, and 25 is located inside the flowmeter main body 22 to compress the air. This is a detection body for indicating a flow rate that is immersed in the air flow and can be moved up and down within the flow meter main body 22 according to the flow rate. In addition, the indicator cylinder portions 26 at the upper and lower ends of the flow meter main body 22,
Arms 27, 27 are symmetrically protruded from 26, and the ends of each arm 27 are connected by vertical shafts 28, 28, respectively. Reference numeral 29 indicates a light emitting device 30 and a light receiving device 31, which are arranged as a pair on both vertical axes 28.
This is a photoelectric sensing device with a built-in power supply, each of which is slidably attached to the light receiving device 31, and an alarm device 3 that issues an alarm using a lamp, a buzzer, etc. is connected to the light receiving device 31, and 33 indicates a projection material.
しかして、以上の構成のエアブラスト機におい
ては、圧縮空気管路７中を通る圧縮空気流量が増
加すると、風量の影響で圧力タンク１における連
結筒部２を流下する投射材３３の流下速度が低下
し、逆に圧縮空気量が減少すると投射材３３の流
下速度が増大するという相互関係があり、すなわ
ち、圧縮空気流量が増加すると投射ノズル９より
の投射量の投射材密度が低下し、圧縮空気流量が
減少すると前記投射材密度が増大する。次に、第
３図はこの関係を示すグラフで、このグラフは内
径５mmの投射ノズルを使用し、空気圧力を５Kg／
cm2Ｇに一定させて粒径JIS−S40のスチールシヨ
ツトを使用して行つた測定結果で、これによると
例えば、圧縮空気流量が1.4Nm3／minでは投射量
は０、すなわち空吹きの状態となり、また、圧縮
空気流量が1.0Nm3／minでは投射量は6000ｇ／
minとなる。そして、前記関係を圧縮空気圧力を
５Kg／cm2Ｇに一定として各種内径の投射ノズルに
より求め、横軸を圧縮空気流量、縦軸を投射ノズ
ル内径として、空吹きその他の場合について作成
したものの一部と示したのが第４図のグラフで、
これによると、投射ノズル内径と消費する圧縮空
気流量とは比例関係にあることがわかる。したが
つて、例えば空吹き時の圧縮空気流量を測定すれ
ば、その時点での投射ノズル内径を把握すること
が可能である。そこで、この関係を利用して使用
する圧縮空気圧力を所定の一定の状態としてお
き、空気流量調整弁２０を操作して圧縮空気管路
７における圧縮空気流量を所定の値に設定し、こ
の圧縮空気流量と使用する投射ノズル９の内径と
により、あらかじめ求めておいた第３図に示す圧
縮空気流量と投射量との関係から投射量を設定す
る。更に、あらかじめ作成しておいて第４図に示
す圧縮空気流量と投射ノズル９の内径との関係か
ら、摩耗による投射ノズル９の内径拡大の許容限
界すなわち使用している投射ノズルの内径がどの
程度まで摩耗したら交換を要するかの最大径にお
ける圧縮空気流量を求める。このようにして圧縮
空気流量が決定されると、これに対応する流量計
本体２２内の検出体２５の位置が決定されるの
で、この位置に達したときの検出体２５を検知で
きるように、第２図に示す光電式感知装置２９の
発光装置３０及び受光装置３１を縦軸２８，２８
に沿つて昇降させて位置決め固定する。 Therefore, in the air blast machine having the above configuration, when the flow rate of compressed air passing through the compressed air pipe 7 increases, the flow rate of the blasting material 33 flowing down the connecting cylinder part 2 in the pressure tank 1 increases due to the influence of the air volume. On the other hand, when the compressed air flow rate decreases, the flow velocity of the shot material 33 increases. In other words, when the compressed air flow rate increases, the density of the shot material in the amount of shot material from the projection nozzle 9 decreases, and the compressed air flow rate increases. As the air flow rate decreases, the projection material density increases. Next, Figure 3 is a graph showing this relationship. This graph uses a projection nozzle with an inner diameter of 5 mm and an air pressure of 5 kg/
The measurement results were conducted using a steel shot with a particle size of JIS-S40 at a constant cm 2 G. According to this, for example, when the compressed air flow rate is 1.4 Nm 3 /min, the amount of shot is 0, that is, the amount of air is 0. condition, and when the compressed air flow rate is 1.0Nm 3 /min, the injection amount is 6000g/min.
It becomes min. Then, the above relationship was determined using projection nozzles of various inner diameters with the compressed air pressure constant at 5 kg/cm 2 G, and one of the results was created for dry blowing and other cases, with the horizontal axis representing the compressed air flow rate and the vertical axis representing the internal diameter of the projection nozzle. The graph in Figure 4 shows the
According to this, it can be seen that there is a proportional relationship between the inner diameter of the projection nozzle and the flow rate of compressed air consumed. Therefore, for example, by measuring the compressed air flow rate during dry blowing, it is possible to determine the inner diameter of the projection nozzle at that time. Therefore, by using this relationship, the compressed air pressure used is kept at a predetermined constant state, and the air flow rate adjustment valve 20 is operated to set the compressed air flow rate in the compressed air pipe line 7 to a predetermined value. Based on the air flow rate and the inner diameter of the projection nozzle 9 used, the projection amount is set from the relationship between the compressed air flow rate and the projection amount as shown in FIG. 3, which has been determined in advance. Furthermore, from the relationship between the compressed air flow rate and the inner diameter of the projection nozzle 9 created in advance and shown in FIG. Find the compressed air flow rate at the maximum diameter that will require replacement if it wears out. When the compressed air flow rate is determined in this way, the corresponding position of the detection body 25 within the flow meter main body 22 is determined, so that the detection body 25 can be detected when it reaches this position. The light emitting device 30 and light receiving device 31 of the photoelectric sensing device 29 shown in FIG.
Position and fix by raising and lowering along the
このように構成されたものは、開状態にある開
閉弁１２の天井壁開口より圧力タンク１内へ所定
量の投射材３３を装入したのち空気圧用圧力源１
３を作動させると、圧縮空気が圧縮空気管路７に
より空気圧調整ユニツト１４、エアフイルタ１
５、エアレギユレータ１６等の調整装置を通つて
所定の状態に調整され、空気流量計１８よりコツ
ク１９に至る。そこでコツク１９を開くと、圧縮
空気は分岐部１０において一部は分岐管路１１へ
進み、圧力タンク１内へ入つて開閉弁１２を押上
げ、前記天井壁開口を閉鎖する。一方、分岐部１
０より圧縮空気管路７へ進んだ圧縮空気は、空気
流量調整弁２０により空気圧一定の下に所定の空
気量とされて合流管４の管路５へ送給される。こ
のとき、圧力タンク１内の投射材３３は連結筒部
２の投射材排出孔３より上部接続孔６を経て管路
５中へ順次落下し、ここで前記圧縮空気と適度な
混合割合とされ、この混合体はゴムホース８を経
てノズル９より噴射され、被処理物へ投射されて
研掃作業が行われる。しかして、この研掃作業に
より投射ノズル９が摩耗してその内径が拡大され
ると、第４図に示すような関係により消費される
圧縮空気量が増加する。このため、圧縮空気管路
７を通る圧縮空気流量が増加し、これにより空気
流量計１８の圧縮空気流中に没入させてある検出
体２５が流量計本体２２内を上昇し、増加流量に
対応する位置を占めることになる。投射ノズル９
の摩耗が進んで更に圧縮空気量が増加し、内径拡
大が許容限界に達すると、検出体２５がこれに対
応する位置まで流量計本体２２内を上昇する。こ
の上昇によりあらかじめセツトしてあつた光電式
感知装置２９の発光装置３０よりの信号光線が遮
断され、直ちに警報装置３２へ信号が送られてラ
ンプあるいはブザーによる警報が発せられる。そ
こでコツク１９を締めてゴムホース８より投射ノ
ズル９を外して交換する。また、投射ノズル９の
摩耗状況は流量計本体２２における検出体２５の
位置により判断できるので、第４図に示す投射ノ
ズル内径に対する圧縮空気流量の関係より、投射
ノズル内径の増加に対する検出体２５の位置の変
化の状態を求め、これを空気流量計１８に印加し
ておくことにより投射ノズル９の内径変化を観察
することができる。 With this configuration, after a predetermined amount of shot material 33 is charged into the pressure tank 1 through the ceiling wall opening of the on-off valve 12 which is in the open state, the pneumatic pressure source 1
3, compressed air is passed through the compressed air line 7 to the air pressure adjustment unit 14 and the air filter 1.
5. The air is adjusted to a predetermined state through an adjusting device such as an air regulator 16, and is then sent to a control unit 19 via an air flow meter 18. When the tank 19 is opened, a portion of the compressed air flows into the branch pipe 11 at the branch section 10, enters the pressure tank 1, pushes up the on-off valve 12, and closes the ceiling wall opening. On the other hand, branch part 1
The compressed air that has proceeded from 0 to the compressed air pipe line 7 is adjusted to a predetermined amount of air under a constant air pressure by the air flow rate regulating valve 20 and is sent to the pipe line 5 of the confluence pipe 4. At this time, the shot material 33 in the pressure tank 1 sequentially falls from the shot material discharge hole 3 of the connecting cylinder part 2 through the upper connection hole 6 into the pipe line 5, where it is mixed with the compressed air at an appropriate ratio. This mixture is injected from a nozzle 9 via a rubber hose 8, and is projected onto the object to be treated to perform the cleaning work. When the projection nozzle 9 is worn out and its inner diameter is enlarged due to this cleaning operation, the amount of compressed air consumed increases due to the relationship shown in FIG. For this reason, the compressed air flow rate passing through the compressed air pipe line 7 increases, and as a result, the detection body 25 immersed in the compressed air flow of the air flow meter 18 rises within the flow meter body 22 to cope with the increased flow rate. will be in a position to do so. Projection nozzle 9
When the wear progresses and the amount of compressed air increases further, and the expansion of the inner diameter reaches the permissible limit, the detection body 25 moves up within the flowmeter main body 22 to a corresponding position. This rise interrupts the signal beam from the light emitting device 30 of the photoelectric sensing device 29, which has been set in advance, and immediately sends a signal to the alarm device 32, which issues an alarm using a lamp or buzzer. Then, tighten the lock 19, remove the projection nozzle 9 from the rubber hose 8, and replace it. Furthermore, since the wear status of the projection nozzle 9 can be determined by the position of the detection body 25 in the flowmeter main body 22, the relationship between the compressed air flow rate and the projection nozzle inner diameter shown in FIG. By determining the state of change in position and applying this to the air flowmeter 18, changes in the inner diameter of the projection nozzle 9 can be observed.
（考案の効果）
以上の説明より明らかなように、本考案によれ
ば、研掃作業により投射ノズルが摩耗してその内
径庄大が許容限界に達すると、空気流量計に付設
した光電式感知装置が所定位置に上昇した検出体
を検知して警報装置を作動させるので、許容限界
以上に摩耗した投射ノズルを気付かずに使用し続
けるというようなことはなくなり、投射材の投射
密度が低下して仕上げ速度や仕上げ精度が不安定
となることがなく、製品の品質管理が容易となつ
て生産性も向上する。しかも、警報は自動的に発
せられるので摩耗状態の点検を行う必要はなく、
確実に交換時期を知ることができて極めて便利で
る。(Effect of the invention) As is clear from the above explanation, according to the invention, when the projection nozzle is worn out due to the grinding work and its inner diameter reaches the permissible limit, the photoelectric sensing device attached to the air flow meter Since the device detects the object that has risen to a predetermined position and activates the alarm device, it is no longer possible to continue using a projection nozzle that has worn beyond the allowable limit without noticing, and the projection density of the projection material decreases. This eliminates instability in finishing speed and finishing accuracy, making product quality control easier and improving productivity. Moreover, since the alarm is issued automatically, there is no need to inspect the wear condition.
It's extremely convenient because you can know exactly when it's time to replace it.
図面は本考案の実施例を示すもので、第１図は
投射ノズルの摩耗量感知装置を含む圧縮空気管路
の回路図、第２図は光電式感知装置を備えた空気
流量計の概略正面図、第３図は投射ノズルからの
投射量と圧縮空気量との関係の一例を示すグラ
フ、第４図は投射ノズル内径と消費される圧縮空
気流量との関係を示すグラフである。
１……圧力タンク、３……投射材排出孔、４…
…合流管、７……圧縮空気管路、９……投射ノズ
ル、１８……空気流量計、２５……検出体、２９
……光電式感知装置、３２……警報装置。
The drawings show an embodiment of the present invention, and Fig. 1 is a circuit diagram of a compressed air pipeline including a projection nozzle wear amount sensing device, and Fig. 2 is a schematic front view of an air flow meter equipped with a photoelectric sensing device. 3 is a graph showing an example of the relationship between the amount of projection from the projection nozzle and the amount of compressed air, and FIG. 4 is a graph showing the relationship between the inner diameter of the projection nozzle and the flow rate of compressed air consumed. 1... Pressure tank, 3... Projection material discharge hole, 4...
... Merging pipe, 7 ... Compressed air pipe line, 9 ... Projection nozzle, 18 ... Air flow meter, 25 ... Detection object, 29
...Photoelectric sensing device, 32...Alarm device.
Claims (1)
投射材と圧縮空気との合流管を接続させて該合流
管の一端に圧縮空気管路を接続するとともに他端
に投射ノズルを接続したエアブラスト機におい
て、前記圧縮空気管路に投射ノズルの摩耗により
増加する圧縮空気流量に対応して移動する検出体
を備えた空気流量計を設け、該空気流量計には所
定の位置に達した前記検出体を検知する光電式感
知装置を取付けるとともに、該光電式感知装置を
前記検出体の検知により作動する警報装置に接続
させたことを特徴とするエアブラスト機における
投射ノズルの摩耗量感知装置。 An air blaster in which a convergence pipe for the blasting material and compressed air is connected to the blasting material discharge hole of a pressure tank that stores the blasting material, a compressed air pipe is connected to one end of the converging tube, and a blasting nozzle is connected to the other end. In the machine, an air flow meter equipped with a detection body that moves in response to the compressed air flow rate that increases due to wear of the projection nozzle is provided in the compressed air pipe, and the air flow meter has a detection body that moves when the flow rate of the compressed air increases due to wear of the projection nozzle. A wear amount sensing device for a projection nozzle in an air blast machine, characterized in that a photoelectric sensing device for detecting a body is attached, and the photoelectric sensing device is connected to an alarm device activated by detection of the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19076686U JPH027012Y2 (en) | 1986-12-11 | 1986-12-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19076686U JPH027012Y2 (en) | 1986-12-11 | 1986-12-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6394662U JPS6394662U (en) | 1988-06-18 |
| JPH027012Y2 true JPH027012Y2 (en) | 1990-02-20 |
Family
ID=31144292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19076686U Expired JPH027012Y2 (en) | 1986-12-11 | 1986-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH027012Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4706968B2 (en) * | 2005-12-26 | 2011-06-22 | 新東工業株式会社 | Shot peening equipment |
| JP2021102255A (en) * | 2019-12-26 | 2021-07-15 | 新東工業株式会社 | Shot treatment device and shot treatment method |
-
1986
- 1986-12-11 JP JP19076686U patent/JPH027012Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6394662U (en) | 1988-06-18 |
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