阅读说明：本技术 一种不易堵塞的喷砂机磨料阀 (Abrasive valve of sand blasting machine not easy to block ) 是由 曾俊 于 2021-08-17 设计创作，主要内容包括：本发明涉及喷砂机阀门组件领域,且公开了一种不易堵塞的喷砂机磨料阀,包括磨料阀体,磨料阀体的侧面法兰连接有气动管体,气动管体内腔的中部由隔膜封隔为两个独立的腔室,且隔膜的侧面与气动管体的侧盖之间设有强力弹簧,隔膜的另一个腔室接通有注气管。通过磨料阀体内流量调节软管两侧连通的第一压块、第二压块结构设计,利用第一压块、第二压块之间的可旋转的联动转轴带动被动转轮、弧形凸起旋转的设计方式,利用联动转轴带动被动转轮上的弧形凸起相对弹性的流量调节软管旋转,有利于物料顺利流经流量调节软管的较小开口处,有效避免了磨料经磨料阀体底端进入量较大,容易在流量调节软管内堵塞的问题。(The invention relates to the field of valve components of sand blasting machines, and discloses a sand blasting machine abrasive valve not easy to block, which comprises an abrasive valve body, wherein a pneumatic pipe body is connected to the side face flange of the abrasive valve body, the middle part of the inner cavity of the pneumatic pipe body is sealed into two independent chambers by a diaphragm, a strong spring is arranged between the side face of the diaphragm and a side cover of the pneumatic pipe body, and a gas injection pipe is communicated with the other chamber of the diaphragm. Through the first briquetting of flow control hose both sides intercommunication in the abrasive material valve body, second briquetting structural design, utilize first briquetting, rotatable linkage pivot between the second briquetting drives passive runner, the protruding rotatory design mode of arc, it is rotatory to utilize the linkage pivot to drive the protruding relative elastic flow control hose of arc on the passive runner, be favorable to the material to flow through the less opening part of flow control hose smoothly, it is great effectively to have avoided the abrasive material to pass through abrasive material valve body bottom admission capacity, the problem of jam in the flow control hose easily.)

1. The utility model provides a sand blasting machine abrasive material valve of difficult jam, including abrasive material valve body (1), the side flange joint of abrasive material valve body (1) has pneumatic body (2), the middle part of pneumatic body (2) inner chamber is sealed by diaphragm (3) and is separated into two independent cavities, and be equipped with powerful spring (301) between the side of diaphragm (3) and the side cap of pneumatic body (2), another cavity of diaphragm (3) connects through has gas injection pipe (20), the fixed cover in middle part of abrasive material valve body (1) is equipped with flow control hose (101), its characterized in that: be equipped with first briquetting (5) and second briquetting (6) that are located flow control hose (101) middle part both sides in abrasive material valve body (1), fixedly connected with pushes away axle (4) between diaphragm (3) and first briquetting (5), be equipped with rotatable linkage pivot (10) between first briquetting (5), second briquetting (6), and fixed cover is equipped with passive runner (11) that are located between second briquetting (6), flow control hose (101) in linkage pivot (10), passive runner (11) are equipped with three arc arch (12) towards one side of flow control hose (101), when flow control hose (101) between first briquetting (5), second briquetting (6) are not laminated completely sealedly, linkage pivot (10) drive arc arch (12) relative flow control hose (101) rotation.

2. The difficult-to-clog sander abrasive valve of claim 1, wherein: the utility model discloses a pneumatic pipe body, including push away the lateral wall junction of the outside of axle (4) and pneumatic body (2), one side fixedly connected with apron (7) of pneumatic body (2) are kept away from in abrasive material valve body (1), the middle part screw thread cover of apron (7) is equipped with threaded rod (9), the one end fixedly connected with of threaded rod (9) is located rotatory piece (21) in apron (7) outside, the other end bearing housing of threaded rod (9) is equipped with sliding block (8) that are located abrasive material valve body (1), and the outside of sliding block (8) cup joints with the inner wall activity of abrasive material valve body (1), the one end of linkage pivot (10) cup joints with the side bearing of sliding block (8), second briquetting (6) cup joint with linkage pivot (10) activity, and second briquetting (6) along with linkage pivot (10) horizontal migration together.

3. The difficult-to-clog sander abrasive valve of claim 1, wherein: one end of the linkage rotating shaft (10), which is far away from the sliding block (8), penetrates through the flow adjusting hose (101) and extends into the pushing shaft (4), one end of the linkage rotating shaft (10) is movably sleeved with a sliding piston (13) which is positioned in the pushing shaft (4), the sliding piston (13) can horizontally move in the pushing shaft (4), the top and the bottom of the sliding piston (13) are fixedly connected with linkage shafts (131), one ends of the two linkage shafts (131) extend to the outer part of the pushing shaft (4) and are fixedly connected with driven sliding rings (14), the driven sliding rings (14) are movably sleeved in the abrasive valve body (1), the inner sides of the driven sliding rings (14) are not in contact with the outer sides of the pushing shaft (4), driven plates (15) which are positioned on one sides of the driven sliding rings (14) are further fixedly sleeved on the pushing shaft (4), the outer sides of the driven plates (15) are movably sleeved with the inner walls of the abrasive valve body (1), and electric contacts (16) are arranged on the opposite sides of the driven plate (15) and the driven slip ring (14), and a lead extending out of the abrasive valve body (1) is electrically connected to each of the two electric contacts (16).

4. A difficult to clog sander abrasive valve according to claim 3, wherein: one end of a wire connected with an electric contact (16) on the passive slip ring (14) is electrically connected with a switch and the anode of a power supply in sequence, one end of the wire connected with the electric contact (16) on the passive plate (15) is electrically connected with the anode of an electromagnetic relay, the cathode of the electromagnetic relay is electrically connected with the cathode of the power supply, two normally closed terminals of the electromagnetic relay are electrically connected with the wire respectively, one end of the wire is electrically connected with the anode of a motor, a warning lamp, the switch and the anode of the power supply in sequence, and the other wire is electrically connected with the cathode of the power supply.

5. A difficult to clog sander abrasive valve according to claim 3, wherein: the top and the bottom of the push shaft (4) are both provided with sliding grooves, and the sliding grooves are movably sleeved with the linkage shaft (131).

Technical Field

The invention relates to the field of valve components of sand blasting machines, in particular to an abrasive valve of a sand blasting machine, which is not easy to block.

Background

The sand blasting machine is a common workpiece surface treatment device, the sand blasting machine forms high-speed jet beams by using compressed air as power, and sprays high-speed jet materials (such as copper ore sand, quartz sand, iron sand, sea sand, carborundum and the like) to the surface of a workpiece to be treated to change the appearance of the outer surface of the workpiece.

The pneumatic abrasive valve is a device commonly used by a sand blasting machine, the pneumatic abrasive valve is a pipe clamp type normally closed abrasive valve, when sand blasting operation is carried out, an electric control switch is used for sending control signals (compressed air) to the air inlet valve and the normally closed abrasive valve, a strong spring in the abrasive valve is flattened under the action of the compressed air, and the compression degree of the hose is adjusted through controlling the flow, so that the sand blasting flow is adjusted.

However, when the existing pneumatic abrasive valve is closed when the pneumatic abrasive valve is stopped, the entering amount of the abrasive material through the bottom end of the abrasive valve body is large, when the flow adjusting hose is at a small opening, the abrasive material is easily blocked in the flow adjusting hose, and the subsequent normal use is affected.

Disclosure of Invention

The invention provides a sand blasting machine abrasive valve which is not easy to block, has the advantage that the abrasive valve is not easy to block when closed, and solves the technical problems mentioned in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme to realize: the utility model provides a sand blasting machine abrasive valve that is difficult for blockking up, includes the abrasive material valve body, the side flange joint of abrasive material valve body has pneumatic body, and the middle part of pneumatic body inner chamber is sealed by the diaphragm and separates to be two independent cavities, and is equipped with powerful spring between the side of diaphragm and the side cap of pneumatic body, and another cavity switch-on of diaphragm has the gas injection pipe, and the fixed cover in middle part of abrasive material valve body is equipped with the flow control hose, be equipped with first briquetting and the second briquetting that is located flow control hose middle part both sides in the abrasive material valve body, fixedly connected with push shaft between diaphragm and the first briquetting, be equipped with rotatable linkage pivot between first briquetting, the second briquetting, and fixed cover is equipped with the passive runner that is located between second briquetting, the flow control hose in the linkage pivot, passive runner is equipped with three arc arch towards one side of flow control hose, first briquetting, When the flow adjusting hose between the second pressing blocks is not completely attached and sealed, the linkage rotating shaft drives the arc-shaped protrusions to rotate relative to the flow adjusting hose.

Optionally, the lateral wall junction of the outside of push away the axle and the pneumatic body is equipped with the sealing washer, one side fixedly connected with apron that the pneumatic body was kept away from to the abrasive material valve body, the middle part screw thread cover of apron is equipped with the threaded rod, the one end fixedly connected with of threaded rod is located the rotatory piece in the apron outside, the other end bearing housing of threaded rod is equipped with the sliding block that is located the abrasive material valve body, and the outside of sliding block cup joints with the inner wall activity of abrasive material valve body, the one end of linkage pivot cup joints with the side bearing of sliding block, the second briquetting cup joints with linkage pivot activity, and the second briquetting is along with linkage pivot horizontal migration together.

Optionally, one end of the linkage rotating shaft, which is far away from the sliding block, penetrates through the flow adjusting hose and extends to the inside of the pushing shaft, a sliding piston, which is located in the pushing shaft, is movably sleeved at one end of the linkage rotating shaft, the sliding piston can horizontally move in the pushing shaft, the top and the bottom of the sliding piston are fixedly connected with the linkage shafts, one ends of the two linkage shafts extend to the outside of the pushing shaft and are fixedly connected with driven sliding rings, the driven sliding rings are movably sleeved in the abrasive valve body, the inner sides of the driven sliding rings are not in contact with the outer sides of the pushing shaft, driven plates, which are located on one sides of the driven sliding rings, are fixedly sleeved on the pushing shaft, the outer sides of the driven plates are movably sleeved with the inner wall of the abrasive valve body, electric contacts are arranged on the opposite sides of the driven plates and the driven sliding rings, and the two electric contacts are electrically connected with a lead wire extending out of the abrasive valve body.

Optionally, one end of a wire connected to the electrical contact on the passive slip ring is electrically connected to the switch and the positive electrode of the power supply in sequence, one end of a wire connected to the electrical contact on the passive plate is electrically connected to the positive electrode of the electromagnetic relay, the negative electrode of the electromagnetic relay is electrically connected to the negative electrode of the power supply, two normally closed terminals of the electromagnetic relay are electrically connected to the wires respectively, one end of a wire is electrically connected to the positive electrode of the motor, the warning light, the switch and the positive electrode of the power supply in sequence, and the other wire is electrically connected to the negative electrode of the power supply in sequence

Optionally, the top and the bottom of the pushing shaft are both provided with sliding grooves, and the sliding grooves are movably sleeved with the linkage shaft.

The invention provides a sand blasting machine abrasive valve not easy to block, which has the following beneficial effects:

1. this sand blasting machine abrasive material valve of difficult jam, first briquetting through flow control hose both sides intercommunication in the abrasive material valve body, second briquetting structural design, utilize first briquetting, rotatable linkage pivot between the second briquetting drives passive runner, the protruding rotatory design of arc, not influencing first briquetting, the second briquetting makes under the sealed prerequisite of flow control hose both sides inner wall laminating, it is rotatory to utilize the linkage pivot to drive the protruding relative elastic flow control hose of arc on the passive runner, be favorable to the material to flow through the less opening part of flow control hose smoothly, it is great effectively to have avoided the abrasive material to pass through abrasive material valve body bottom entering volume, when the less opening part of flow control hose, block up in the flow control hose easily, influence the problem of follow-up normal use.

2. This sand blasting machine abrasive valve of difficult jam, through first briquetting, the passive sliding ring of linkage pivot linkage between the second briquetting, the structural design of passive board, when closing the abrasive valve, if this department is blocked by the abrasive material, at this moment, the arc arch still keeps the rotatory state of relative flow control hose, utilize the bellied rotation of arc to block at the intraductal first briquetting of flow control hose, the abrasive grain clearance of second briquetting laminating department goes out, thereby when avoiding the abrasive valve to close, because of the too much jam of abrasive grain at first briquetting, between the second briquetting, the elasticity that leads to the spring can't make the both sides inner wall of flow control hose laminate completely and form sealedly, make the abrasive valve leak, cause the extravagant problem of abrasive material.

3. The abrasive valve of the sand blasting machine which is not easy to block is completely attached to the inner walls of the two sides of the flow regulating hose, after effective sealing is realized, the driven plate is contacted with the electric contact on the driven slip ring, the electromagnetic relay is electrified and is changed from a normally closed state to a normally open state, so that the motor is powered off, the linkage rotating shaft stops rotating, the warning lamp is turned off at the same time, thereby being convenient for operators to determine whether the abrasive valve is completely closed or not and being convenient for use, avoiding the problems that when the prior abrasive valve is closed after use, the abrasive particles existing between the first pressing block and the second pressing block in the flow regulating hose are not completely flowed away, so that the first pressing block and the second pressing block press the inner walls at two sides of the flow regulating hose and cannot be effectively attached, and the abrasive material is kept in a completely sealed state under the action of strong elasticity of a strong spring, so that the problem of waste of subsequent abrasive material ejection is caused.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a system electrical schematic of the motor construction of the present invention;

FIG. 4 is a cross-sectional view of a side piece of the flow control hose of the structure of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the arcuate projection of the structure of FIG. 4 of the present invention.

In the figure: 1. an abrasive valve body; 101. a flow regulating hose; 2. a pneumatic tube body; 3. a diaphragm; 301. a strong spring; 4. pushing the shaft; 5. a first pressing block; 6. a second pressing block; 7. a cover plate; 8. a slider; 9. a threaded rod; 10. a linkage rotating shaft; 11. a passive rotating wheel; 12. an arc-shaped bulge; 13. a sliding piston; 131. a linkage shaft; 14. a passive slip ring; 15. a passive plate; 16. an electrical contact; 17. a battery compartment; 18. a driving gear; 19. a driven gear; 20. a gas injection pipe; 21. rotating the block; 22. and a baffle plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an abrasive valve of a sand blasting machine, which is not easy to block, includes an abrasive valve body 1, a pneumatic tube body 2 is flanged to one side of the abrasive valve body 1, a flow regulating hose 101 is fixedly sleeved in the middle of the inner cavity of the abrasive valve body 1, abrasive enters from the bottom inlet of the abrasive valve body 1, flows through the flow regulating hose 101 in the inner cavity of the abrasive valve body 1 and flows out from the outlet at the top end of the abrasive valve body 1, the inner cavity of the pneumatic tube body 2 is divided into two independent chambers by a diaphragm 3, a strong spring 301 is fixedly connected to the middle of the side surface of the diaphragm 3, one end of the strong spring 301, which is far away from the diaphragm 3, is connected to the side cover of the pneumatic tube body 2, a push shaft 4 is fixedly connected to the middle of the other side of the diaphragm 3, please refer to fig. 2, one end of the push shaft 4, which is far away from the diaphragm 3, extends into the abrasive valve body 1 and is fixedly connected to a first press block 5, a seal ring is arranged at the connection position of the outer side of the push shaft 4 and the side wall of the pneumatic tube body 2, one side of the first pressing block 5, which is far away from the push shaft 4, is movably connected with the side face of the flow adjusting hose 101, a second pressing block 6, which is located at the other side of the flow adjusting hose 101, is arranged in the abrasive valve body 1, the second pressing block 6 corresponds to the first pressing block 5, the pneumatic tube body 2 is communicated with the gas injection tube 20, which is far away from one side of the strong spring 301, the gas injection tube 20 inflates the inner cavity of the diaphragm 3, so that the gas pressure in the diaphragm 3 is increased, the elastic force of the strong spring 301 is overcome, the push shaft 4 drives the first pressing block 5 to move leftwards, the channel at the inner side of the flow adjusting hose 101 is opened, so that the abrasive flows through the flow adjusting hose 101, when the abrasive valve is closed, the inflation state in the diaphragm 3 is cancelled, under the strong elastic force of the push shaft 4, the first pressing block 5 integrally moves rightwards, so that the first pressing block 5 is matched with the threaded rod 9 to tightly press the flow adjusting hose 101, the flow regulating hose 101 is blocked to close the abrasive valve, so that the abrasive is prevented from flowing out through the abrasive valve.

Referring to fig. 1, a cover plate 7 is fixedly connected to one side of the abrasive valve body 1 away from the pneumatic tube body 2, a threaded rod 9 is sleeved on a middle portion of the cover plate 7 through threads, a rotating block 21 located on the outer side of the cover plate 7 is fixedly connected to one end of the threaded rod 9, a sliding block 8 located in the abrasive valve body 1 is sleeved on the other end of the threaded rod 9 through a bearing, the outer side of the sliding block 8 is movably sleeved on the inner wall of the abrasive valve body 1, a linkage rotating shaft 10 is sleeved on one side of the sliding block 8 away from the threaded rod 9 through a bearing, a second pressing block 6 is movably sleeved on the linkage rotating shaft 10, a baffle 22 is fixedly sleeved on the linkage rotating shaft 10, the second pressing block 6 is limited through the baffle 22, so that the second pressing block 6 moves horizontally along with the linkage rotating shaft 10, when the abrasive valve is opened, the rotating block 21 is rotated to control the sliding block 8 to move horizontally in the abrasive valve body 1, so as to drive the second pressing block 6 to move horizontally relative to the first pressing block 5, the horizontal distance between the first pressing block 5 and the second pressing block 6 is adjusted, so that the flow of the abrasive in the flow adjusting hose 101 is controlled, an operator can conveniently control the ejection amount of the abrasive according to the requirements of specific conditions, and excessive waste of the abrasive is avoided.

Referring to fig. 2, one end of the linkage rotating shaft 10, which is far away from the sliding block 8, penetrates through the flow rate adjusting hose 101 and extends into the pushing shaft 4, a sliding piston 13 located in the pushing shaft 4 is movably sleeved at one end of the linkage rotating shaft 10, the sliding piston 13 can horizontally move in the pushing shaft 4, the top and the bottom of the sliding piston 13 are both fixedly connected with a linkage shaft 131, one ends of the two linkage shafts 131 are both extended to the outside of the pushing shaft 4 and are fixedly connected with driven slip rings 14, the driven slip rings 14 are movably sleeved in the abrasive valve body 1, the inner sides of the driven slip rings 14 are not in contact with the outside of the pushing shaft 4, a driven plate 15 located on one side of the driven slip rings 14 is also fixedly sleeved on the pushing shaft 4, the outer sides of the driven plate 15 are movably sleeved with the inner wall of the abrasive valve body 1, electrical contacts 16 are respectively arranged on the opposite sides of the driven plate 15 and the driven slip rings 14, and the two electrical contacts 16 are both electrically connected with a conducting wire extending out of the abrasive valve body 1, when the first pressing block 5 and the second pressing block 6 are attached to press the flow regulating hose 101 to seal the flow regulating hose 101, the electrical contact 16 is in contact with the driven slip ring 14, and the on-off of the circuit is controlled by the contact between the electrical contact 16 and the driven slip ring 14, so as to judge whether the flow regulating hose 101 is completely attached and sealed under the pressure of the first pressing block 5 and the second pressing block 6, referring to fig. 4-5, a driven rotating wheel 11 is fixedly sleeved on a linkage rotating shaft 10, the driven rotating wheel 11 is positioned between the flow regulating hose 101 and the second pressing block 6, two sides of the driven rotating wheel 11 are respectively movably connected with the second pressing block 6 and the side surface of the flow regulating hose 101, one side of the driven rotating wheel 11 facing the flow regulating hose 101 is provided with three arc-shaped bulges 12, the three arc-shaped bulges 12 are symmetrical with the axis of the driven rotating wheel 11, and a single first pressing block 5 and a single pressing block 6 are blocked by abrasive particles in the flow regulating hose 101, when the abrasive particles are not completely attached, the driven rotating wheel 11 and the arc-shaped bulge 12 are driven to rotate by the linkage rotating shaft 10, the abrasive particles clamped at the attachment position of the first pressing block 5 and the second pressing block 6 in the flow regulating hose 101 are cleaned out by the rotation of the arc-shaped bulge 12 under the action of the strong elasticity of the strong spring 301, thereby avoiding the situation that when the abrasive valve is closed, the inner walls at the two sides of the flow adjusting hose 101 are completely attached to form sealing due to the elasticity of the spring caused by the excessive abrasive particles blocked between the first pressing block 5 and the second pressing block 6, the height of the arc-shaped bulge 12 is less than the thickness of the flow adjusting hose 101, so that when no abrasive solid is blocked in the flow adjusting hose 101, the inner walls at two sides of the flow adjusting hose 101 can completely wrap the arc-shaped bulge 12, thereby ensuring that the arc-shaped protrusions 12 do not affect the sealing performance when the inner walls of the two sides of the flow rate adjusting hose 101 are attached to each other by the elastic force of the strong spring 301.

Specifically, referring to fig. 3, one end of the wire connected to one electrical contact 16 is electrically connected to the switch and the positive electrode of the power supply in turn, one end of the wire connected to the other electrical contact 16 is electrically connected to the positive electrode of the electromagnetic relay, the negative pole of the electromagnetic relay is electrically connected with the negative pole of the power supply, two normally closed terminals of the electromagnetic relay are respectively and electrically connected with a lead, one end of one lead is sequentially and electrically connected with the positive pole of the motor, the warning light, the switch and the positive pole of the power supply, the other lead is electrically connected with the negative pole of the power supply, referring to figure 1, the motor is fixedly arranged on one side of a sliding block 8, and the output shaft of the motor drives the driving gear 18 located on the other side of the sliding block 8, the linkage rotating shaft 10 is fixedly sleeved with the driven gear 19 meshed with the driving gear 18, the power supply is arranged in the battery compartment 17, the battery compartment 17 is arranged on the abrasive material valve body 1, and the warning light is arranged on the battery compartment 17.

When the abrasive valve is opened during the operation of the sand blasting machine, two switches in the circuit of the electromagnetic relay are closed, at the moment, the electromagnetic relay is electrified to be in a normally closed state, the motor is electrified to drive the linkage rotating shaft 10 to rotate, gas is filled into the pneumatic tube body 2 through the diaphragm 3, so that the first pressing block 5 is separated from the second pressing block 6, the abrasive flows through the flow adjusting hose 101, when the opening degree of the flow adjusting hose 101 is adjusted to be in a smaller state, and the abrasive flow is controlled to be in a smaller state, the linkage rotating shaft 10 is utilized to drive the arc-shaped bulge 12 on the driven rotating wheel 11 to rotate relative to the elastic flow adjusting hose 101, so that the material can smoothly flow through the smaller opening of the flow adjusting hose 101, the problems that the abrasive enters the lower end of the abrasive valve body 1 to a larger amount, and is easily blocked in the flow adjusting hose 101 when passing through the smaller opening of the flow adjusting hose 101, and the subsequent normal use is affected are effectively avoided, when the abrasive valve needs to be closed, the air supply of the pneumatic tube body 2 is cancelled, under the action of strong elasticity of the strong spring 301, the push shaft 4 drives the first pressing block 5 to move towards the second pressing block 6, the flow adjusting hose 101 is pressed to be blocked, if the position is blocked by abrasive, the arc-shaped bulge 12 still keeps a state of rotating relative to the flow adjusting hose 101, so that the flow adjusting hose 101 flows to one side under the action of the rotation of the arc-shaped bulge 12, until the inner walls of the two sides of the flow adjusting hose 101 are completely attached, after effective sealing is realized, the driven plate 15 is contacted with the electric contact 16 on the driven sliding ring 14, the electromagnetic relay is electrified, the normally closed state is changed into the normally open state, the motor is powered off, the linkage rotating shaft 10 stops rotating, the warning lamp is turned off at the same time, and an operator can conveniently determine whether the abrasive valve is completely closed or not, so that the use is convenient, thereby avoided current abrasive material valve when closing after the use, easily because of the abrasive material granule that exists between first briquetting 5, the second briquetting 6 in the flow control hose 101 does not completely flow away, lead to first briquetting 5, the second briquetting 6 to push down the unable effectual laminating that realizes of flow control hose 101 both sides inner wall to under the strong spring action of powerful spring 301, keep this to be totally enclosed state, thereby cause the extravagant problem of follow-up abrasive material blowout.

Referring to fig. 2, the top and the bottom of the push shaft 4 have both been provided with a sliding groove, and the sliding groove is movably sleeved with the linkage shaft 131, so as to move in the control linkage rotating shaft 10, after adjusting the distance between the first pressing block 5 and the second pressing block 6, the distance between the passive sliding ring 14 and the passive plate 15 has been correspondingly adjusted at the same time, thereby ensuring that the first pressing block 5 and the second pressing block 6 press the flow adjusting hose 101 to be completely attached, the two electrical contacts 16 can contact, the top of the passive plate 15 and the passive sliding ring 14 has both been provided with a through groove, and the passive plate 15 and the passive sliding ring 14 can be conveniently moved through the through groove without affecting the wires extending out when moving.

The power is low voltage power, and the motor is gear motor to the energy saving consumes, and improves the security, avoids linkage pivot 10 to rotate at the excessive speed simultaneously and rubs with flow control hose 101 binding face, leads to flow control hose 101 wearing and tearing to consume, causes the problem of leakage.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.