CN219640806U - Flexible high-pressure hose driving device - Google Patents

Abstract

The utility model discloses a flexible high-pressure hose driving device, which comprises a frame body; the two ends of the frame body are respectively provided with an inlet and an outlet, and the hose can penetrate through the frame body; the frame body is internally provided with a rotatable driving wheel and a driven wheel, and the hose is clamped between the driving wheel and the driven wheel; the driving wheel is connected with a motor and is used for driving the driving wheel to rotate and detecting the rotating speed of the driving wheel; the driven wheel is connected with a measuring device and is used for detecting the rotating speed of the driven wheel; the measuring device is electrically connected with the motor and is used for controlling the rotation of the driving wheel according to the rotation speed difference value of the driving wheel and the driven wheel. When the rotary speed difference is larger than a preset value, the motor is firstly reversed to enable the driving wheel to be reversed, the spray head is stopped after being retracted for a certain distance, the normal pipe feeding speed is recovered, and the rotary speed is circularly reciprocated until the cleaning of the whole pipeline is completed. The utility model can simulate the hand feeling of manual pipe feeding and judge the scab condition of the pipe wall, and has the advantages of high cleaning efficiency and good quality.

Description

Flexible high-pressure hose driving device

Technical Field

The utility model belongs to the technical field of high-pressure water cleaning, and particularly relates to a flexible high-pressure hose driving device.

Background

In the field of ultrahigh-pressure water jet cleaning, cleaning of a tube array heat exchanger is one of the difficulties. The heat exchanger in the industrial production field plays a role in heat exchange, the processed product flows through the tube array of the heat exchanger, high-temperature steam is introduced outside the tube array, and after the heat exchanger is operated for a period of time, scabs can be formed on the inner wall of the tube array, and even the scabs can completely block the tube array of the heat exchanger. The self-rotating spray head is arranged at the front end of the high-pressure hose, high-speed water jet is sprayed out of the spray head after high-pressure water is introduced, the inner wall of the heat exchanger tube array is cleaned, and otherwise, the heat exchange efficiency of the heat exchanger is affected. The tubulars are typically flushed one by manual feeding. The mode risk is high, and high-speed water jet pressure is great, and operating personnel is close to the tubulation operation, has the risk of being hit by high-pressure water flow. Secondly, the tube array of the tube array heat exchanger is numerous, the labor intensity of manual tube feeding is high, and the cleaning quality and the cleaning efficiency are very low. The existing cleaning equipment also has a mechanical pipe conveying mode, but the mechanical pipe conveying can not sense the scab condition of the inner wall of the pipe array, and the pipe array hole which is relatively large scab or is completely blocked is encountered, so that the forced pipe conveying can cause the damage of a high-pressure hose, and the effective cleaning is difficult to complete.

Disclosure of Invention

In order to overcome the defects in the background art, the utility model provides a flexible high-pressure hose driving device and a using method thereof, and aims to simulate the hand feeling of manual pipe feeding by mechanical pipe feeding, judge the condition of pipe wall scarring by sensing the resistance of pipe feeding into a pipe array, and repeatedly clean the scarring positions so as to achieve the purposes of improving the cleaning quality and the cleaning efficiency; and then can replace the manual work completely, avoid the risk, automatic completion tubulation inner wall's cleaning work.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a flexible high-pressure hose driving device comprises a frame body; the two ends of the frame body are respectively provided with an inlet and an outlet, and the hose can penetrate through the frame body; the key points are as follows: the hose is clamped between the driving wheel and the driven wheel, and is driven to move by friction force between the driving wheel and the hose wall and driven to rotate by friction force between the driven wheel and the hose wall when the driving wheel rotates;

the driving wheel is connected with a motor and is used for driving the driving wheel to rotate and detecting the rotating speed of the driving wheel;

the driven wheel is connected with a measuring device and is used for detecting the rotating speed of the driven wheel;

the measuring device is electrically connected with the motor and is used for controlling the driving wheel to rotate according to the rotating speed difference value of the driving wheel and the driven wheel.

As a further optimization, the driven wheel is rotatably arranged on the pressing wheel frame; the pinch roller frame is connected with the frame body in a sliding way; the two ends of the spring are respectively propped against the pressing wheel frame and the frame body and are used for driving the driven wheel to push the hose to be abutted against the driving wheel through self resilience force so that the hose is clamped between the driving wheel and the driven wheel.

As a further optimization, the motor is a servo motor; the measuring device is an encoder.

As a further optimization, the driving wheel and the driven wheel are provided with a plurality of driving wheels and driven wheels respectively; the driving wheels and the driven wheels are respectively positioned at two sides of the hose; at least one of the drive wheels is connected with the motor; at least one driven wheel is connected with the measuring device.

As a further optimization, the driving wheel and the driven wheel are two in each case.

As further optimization, a driving gear is connected to the output shaft of the servo motor; the driving wheel corresponding to the servo motor comprises a driven gear which is coaxially connected; the driving gear is meshed with the driven gear and is used for driving the driving wheel to rotate through gear transmission by the servo motor; the driven wheel corresponding to the encoder is coaxially connected with an end gear; the end gear is meshed with a speed measuring gear of the encoder, and is used for measuring the rotating speed of the driven wheel through gear transmission; the encoder is arranged on the pressing wheel frame and used for moving along with the driven wheel.

As further optimization, sliding strips are arranged on two sides of the pinch roller frame; the sliding strip is slidably inserted into a preset slideway on the frame body and is used for slidably connecting the pinch roller frame with the frame body.

The utility model also provides a using method of the flexible high-pressure hose driving device, which is characterized by comprising the following steps of:

s1, penetrating one end of a hose through the frame body, and enabling the hose to be clamped between the driving wheel and the driven wheel; connecting the tail end of the hose with a spray head;

s2, aligning the spray head with a pipeline to be cleaned, and communicating the other end of the hose with a high-pressure water source so that the spray head can spray high-pressure water jet;

s3, starting a motor to drive the driving wheel to rotate so as to drive the hose to move, conveying the spray head into the pipeline at a normal pipe conveying speed, and synchronously measuring the rotating speed of the driving wheel; meanwhile, the measuring device detects the rotating speed of the driven wheel;

s4: comparing the rotating speed of the driven wheel with the rotating speed of the driving wheel to obtain a rotating speed difference value;

s5: when the rotating speed difference value is larger than a preset value, controlling the motor to enter an induction working mode;

the preset value at least comprises a third threshold value;

when the rotating speed difference is greater than a third threshold, the induction working mode is that the driving wheel is reversed, the nozzle is stopped after being retracted for a certain distance, and the steps S3 to S5 are repeated, so that the normal pipe feeding speed is recovered, and the cleaning of the whole pipeline is completed.

Further preferably, the preset value further comprises a first threshold value and a second threshold value; the first threshold value, the second threshold value and the third threshold value are sequentially set from small to large;

when the rotating speed difference is larger than a first threshold, the induction working mode is to firstly reduce the rotating speed so that the driving wheel reduces the rotating speed, the spray head slowly advances until the rotating speed difference is smaller than the first threshold, and then repeating the steps S3 to S5, and recovering the normal pipe feeding speed until the cleaning of the whole pipeline is completed; when the rotating speed difference is greater than a second threshold, the induction working mode is firstly stopped so that the driving wheel stops rotating, and after the nozzle stops for a period of time, the steps S3 to S5 are repeated, and the normal pipe feeding speed is recovered until the cleaning of the whole pipeline is completed; when the rotating speed difference is greater than a third threshold, the induction working mode is that the driving wheel is reversed, the nozzle is stopped after being retracted for a certain distance, and the steps S3 to S5 are repeated, so that the normal pipe feeding speed is recovered, and the cleaning of the whole pipeline is completed.

Further preferably, the first threshold value is that the rotation speed of the driven wheel is 10% slower than that of the driving wheel; the second threshold value is that the rotation speed of the driven wheel is 30% slower than that of the driving wheel; the third threshold value is that the rotation speed of the driven wheel is 60% slower than that of the driving wheel.

The utility model has the beneficial effects that:

(1) The hand feeling can be simulated, the cleaning process automatically senses the obstacle, the scab resistance on the pipe wall is automatically adapted, and the tubulation is automatically cleaned; even can automatically identify and adapt to the tube array which is completely blocked by the scab.

(2) The cleaning efficiency is high, and the quality is good; the tube feeding speed can be adaptively selected for the tube array without or with less scarring, so as to improve the efficiency; the tube feeding speed can be reduced in a self-adaptive manner for tubes with more scars, and the scars can be repeatedly cleaned, so that the cleaning quality is ensured.

(3) The mechanical device is used for carrying out pipe feeding operation, so that the manual work can be completely replaced, the manpower is saved, and the risk that the personnel is injured by high-pressure water or splashed slag blocks is avoided.

In a word, the device can simulate the hand feeling during manual pipe feeding, judge the scar situation of the pipe wall, and repeatedly clean the scar; has the advantages of high cleaning efficiency, good quality, replacement of manpower, safety and reliability.

Drawings

Fig. 1 is a schematic diagram of the working principle of embodiment 1 of the present utility model;

FIG. 2 is a schematic structural view of embodiment 1 of the present utility model;

fig. 3 is a schematic view of the structure of a frame body in embodiment 1 of the present utility model;

fig. 4 is a schematic view of a passive wheel mounting structure according to embodiment 1 of the present utility model;

FIG. 5 is a schematic cross-sectional view of a driving wheel according to embodiment 1 of the present utility model;

FIG. 6 is a schematic diagram of the encoder of embodiment 1 of the present utility model;

fig. 7 is a schematic structural view of a motor of embodiment 1 of the present utility model.

In the figure: the device comprises a frame body 1, side strips 11, a slide rail block 12, a mounting frame 13, a pressing cap 14, a window plate 15, a hose 2, a spray head 21, a driving wheel 3, a driven gear 31, a soft elastic layer 32, a central shaft 33, a rotating sleeve 34, a bearing 35, a bearing 36, a retaining ring 37, a long bolt 37, a driven wheel 4, a roller frame 41, a slide rail 411, a spring 42, a roller wheel 43, a roller plate mounting hole 44, a servo motor 5, a driving gear 51, a roller 6, a roller plate 61, a speed measuring gear 62, a tube 7, a scab 71 and a guide frame 8.

Detailed Description

The following description of the embodiments of the present utility model will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments thus described are only some, but not all, of the preferred embodiments of the present utility model. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

Example 1: please refer to fig. 1-7;

the utility model provides the following technical scheme: a flexible high-pressure hose driving device is applied to the inner wall scab 71 of a tube array 7 of a high-pressure water cleaning tube array heat exchanger, and comprises a frame body 1; the two ends of the frame body 1 are respectively provided with an inlet and an outlet, and the hose 2 can penetrate through the frame body 1; illustratively, the two ends of the frame body 1 are connected with a window plate 15 by bolts, an inlet and an outlet of the hose 2 are arranged in the middle of the window plate 15, and a guiding device for guiding the hose 2 to enter and exit can be connected to the window plate 15; the key points are as follows: the frame body 1 is provided with a rotatable driving wheel 3 and a driven wheel 4, the hose 2 is clamped between the driving wheel 3 and the driven wheel 4, and is used for driving the hose 2 to move through the friction force between the driving wheel 3 and the wall of the hose 2 and driving the driven wheel 4 to rotate through the friction force between the driven wheel 4 and the wall of the hose 2 when the driving wheel 3 rotates; the driving wheel 3 is connected with a motor and is used for driving the driving wheel 3 to rotate and detecting the rotating speed of the driving wheel 3; the driven wheel 4 is connected with a measuring device for detecting the rotating speed of the driven wheel 4; the measuring device is electrically connected with the motor and is used for controlling the rotation of the driving wheel 3 according to the rotation speed difference value of the driving wheel 3 and the driven wheel 4.

Wherein the frame body 1 provides a rotatable supporting foundation for the driving wheel 3 and the driven wheel 4, so that the driving wheel 3 and the driven wheel 4 are stable. The frame body 1 is designed in a hollowed-out manner, so that the frame body can be used under severe working conditions (water and solid scale slag containing certain acid and alkali can be sprayed in the cleaning process), and the frame is designed to be convenient for removing harmful substances. Illustratively, the frame body 1 is arranged side by side with the tubulation 7, and a movable guide frame 8 is arranged above the tubulation 7 to guide the spray heads 21 at the end of the hose 2 to be aligned with the mouth of the tubulation 7 one by one; it is also possible to arrange the frame body 1 above the tube array 7 and to make the frame body 1 movable, the guide frame 8 may be omitted.

When in use, the method comprises the following steps:

s1, penetrating one end of a hose 2 through the frame body 1, and enabling the hose 2 to be clamped between the driving wheel 3 and the driven wheel 4; the end of the hose 2 is connected with a spray head 21;

s2, aligning the spray head 21 with a tube array to be cleaned, and communicating the other end of the hose 2 with a high-pressure water source so that the spray head 21 can spray high-pressure water jet;

s3, starting a motor to drive the driving wheel 3 to rotate so as to drive the hose 2 to move, feeding the spray head 21 into the tube array at a normal tube feeding speed, and synchronously measuring the rotating speed of the driving wheel 3; meanwhile, the measuring device detects the rotating speed of the driven wheel 4;

s4: comparing the rotation speed of the driven wheel 4 with the rotation speed of the driving wheel 3 to obtain a rotation speed difference value;

s5: when the rotating speed difference value is larger than a preset value, controlling the motor to enter an induction working mode; the preset value comprises a first threshold value, a second threshold value and a third threshold value which are sequentially set from small to large;

when the rotation speed difference is greater than a first threshold, the induction working mode is to reduce the rotation speed of the driving wheel 3, so that the spray head 21 slowly advances, and the steps S3 to S5 are repeated until the rotation speed difference is less than the first threshold, and the normal pipe feeding speed is recovered until the cleaning of the whole tubulars is completed;

when the rotation speed difference is greater than a second threshold, the induction working mode is firstly stopped, so that the driving wheel 3 stops rotating, the spray head 21 stops for a period of time, and then the steps S3 to S5 are repeated, and the normal pipe feeding speed is recovered until the cleaning of the whole tubular is completed;

when the rotation speed difference is greater than a third threshold, the induction working mode is that the driving wheel 3 is reversed, the spray head 21 is stopped after retreating for a certain distance, and the steps S3 to S5 are repeated, so that the normal pipe feeding speed is recovered until the cleaning of the whole tubular is completed;

and S6, after the cleaning of one tube array is finished, the motor reversely rotates to recover the hose 2, then the spray head 21 is aligned to the next tube array, and the steps S2 to S5 are repeated to clean the next tube array.

The working principle of this embodiment is that the spray head 21 can automatically sense that the spray head encounters the obstacle and scab 71 in the advancing process, then automatically enter a mode of simulating manual pipe feeding (namely, an induction working mode), and slowly advance a small distance after the spray head retreats to clean the obstacle and scab 71, so that the process is repeated until the whole pipe is cleaned. The principle of automatic perception of the obstacle is: the driving wheel 3 drives the high-pressure hose 2 to advance, after encountering an obstacle, the driving wheel 3 can continue to rotate, the torque of the driving wheel 3 is larger than the friction force, and the slipping phenomenon is generated. The driven wheel 4 can slow down or even stop rotating, and the rotation of the driven wheel 4 is driven by friction force generated when the hose 2 advances or retreats, the measuring device detects that the driven wheel 4 does not rotate or decelerates, the phenomenon is identified through the circuit control system, the judgment of encountering obstacles can be made, and then corresponding pipe conveying measures are made according to the size of the encountered obstacles and the size of the scabs 71. The corresponding pipe feeding measures are realized by setting the first threshold value, the second threshold value and the third threshold value. When the obstruction reaches the first threshold, the scab 71 on the pipe wall is smaller, the passage of the spray head 21 cannot be blocked, and the spray head can slowly advance, so that the cleaning effect on the scab 71 is improved; when the obstruction reaches the second threshold, indicating that the scab 71 is larger, stopping the pipe feeding so as to enable the spray head 21 to clean the scab 71 for a long time, and continuing to advance after the scab 71 is cleaned, thereby improving the cleaning effect; when the obstruction reaches the third threshold, indicating that the scab 71 is very large, it is difficult for the nozzle 21 to pass directly, and the hose 2 or the nozzle 21 is damaged by continuing to feed the hose, retracting a section of the hose 2, and then advancing again, until the scab 71 is cleaned and passed through by the reciprocating impact action, and then continuing the normal cleaning speed. Wherein the threshold value of the exemplary present embodiment: the third threshold corresponds to the situation in which the driven wheel 4 stops rotating, the hose 2 is completely blocked, and the driving wheel 3 is completely slipping, i.e. the difference in rotational speed is maximum; the first threshold corresponds to the situation that when the rotation speed of the driven wheel 4 is 5% slower than that of the driving wheel 3, the driving wheel 3 slightly slips, but still can drive the hose 2 to continue to advance; the second threshold value is between the first threshold value and the third threshold value, and corresponds to a situation in which the resistance is large and the driving wheel 3 is severely slipped even though the hose 2 can still continue to advance when the rotation speed of the driven wheel 4 is 30% slower than the rotation speed of the driving wheel 3.

The device has the advantages that:

(1) The hand feeling can be simulated, the cleaning process automatically senses the obstacle, the resistance of scabs 71 on the pipe wall is automatically adapted, and the tubulars are automatically cleaned; even a tube array that is completely blocked by the scab 71 can be automatically identified and accommodated.

(2) The cleaning efficiency is high, and the quality is good; the tube feeding speed can be adaptively selected for tubes without the scab 71 or with fewer scabs 71, so as to improve the efficiency; the tube feeding speed can be adaptively slowed down for the tube array with more scars 71, and the scars 71 are repeatedly cleaned, so that the cleaning quality is ensured.

(3) The mechanical device is used for carrying out pipe feeding operation, so that the manual work can be completely replaced, the manpower is saved, and the risk that the personnel is injured by high-pressure water or splashed slag blocks is avoided.

In a word, the device can simulate the hand feeling during manual pipe feeding, judge the condition of the pipe wall scab 71 and repeatedly clean the scab 71; has the advantages of high cleaning efficiency, good quality, replacement of manpower, safety and reliability.

It should be noted that, the preset value at least includes a third threshold value, so that the device has a rollback function to simulate the hand feeling of a person to overcome the situation of tube array blockage. On the basis, the first threshold value and the second threshold value which are added can better adapt to the situation that the device is not completely blocked, the rollback times are reduced, and the efficiency is improved. In addition, the embodiment is applied to cleaning the heat exchanger tube array, but the device can also be applied to cleaning other pipelines.

Illustratively, in order to keep the driven wheel 4 in a floating state, the tight contact between both sides of the hose 2 and the driving wheel 3 and the driven wheel 4 is maintained, stabilizing the friction force. The stable friction force can stabilize the power of the conveying hose 2 on one hand, and on the other hand, the power and the resistance are conveniently compared, so that the obstacle size is accurately judged. The driven wheel 4 is rotatably arranged on the pressing wheel frame 41; the pinch roller frame 41 is in sliding connection with the frame body 1; the two ends of the spring 42 are respectively propped against the pressing wheel frame 41 and the frame body 1, and are used for driving the driven wheel 4 to push the hose 2 to be abutted against the driving wheel 3 by self resilience force, so that the hose 2 is clamped between the driving wheel 3 and the driven wheel 4. In the exemplary installation mode of the spring 42, one end of the spring 42 is inserted into the press cap 14, the expansion direction of the spring 42 is kept opposite to the press wheel frame 41 under the action of the press cap 14, the outer wall of the press cap 14 is provided with external threads for being screwed on the mounting frame 13, and the mounting frame 13 is connected to the frame body 1 through bolts. The pressing cap 14, the mounting frame 13 and the spring 42 are detachable, so that the maintenance is convenient; second, the amount of compression of the spring 42, and thus the amount of clamping force, can be adjusted by rotation of the cap 14, so that the underlying friction is adjustable.

The motor is preferably a servo motor 5, and a control circuit of the motor can well control the rotation of the driving wheel 3 and can feed back the rotation speed of the driving wheel 3 in real time. There are many rotational speed measuring devices for the driven wheel 4, and a common rotational speed sensor is a sensor that converts the rotational speed of a rotating object into an electric power output. The rotation speed sensor belongs to an indirect measuring device and can be manufactured by mechanical, electric, magnetic, optical, hybrid methods and the like. The rotation speed sensor can be divided into an analog type and a digital type according to different signal forms. The preferred measuring device of this embodiment is an encoder 6 which has high sensitivity, high reliability, long life, good impact resistance and shock resistance.

In order to increase the friction force and improve the power of the pipe feeding, the driving wheel 3 and the driven wheel 4 are respectively provided with a plurality of driving wheels; a plurality of driving wheels 3 and a plurality of driven wheels 4 are respectively arranged at two sides of the hose 2; at least one of said driving wheels 3 is connected to said motor; at least one of the driven wheels 4 is connected with the measuring device. Preferably, there are two driving wheels 3 and driven wheels 4.

Preferably, the output shaft of the servo motor 5 is connected with a driving gear 51; the driving wheel 3 corresponding to the servo motor 5 comprises a driven gear 31 coaxially connected; the driving gear 51 is in meshed connection with the driven gear 31, and is used for driving the driving wheel 3 to rotate through gear transmission by the servo motor 5; an end gear 43 is coaxially connected to the driven wheel 4 corresponding to the encoder 6; the end gear 43 is in meshed connection with a speed measuring gear 62 of the encoder 6, and is used for measuring the rotating speed of the driven wheel 4 through gear transmission; the encoder 6 is mounted on the carriage 41 for movement with the driven wheel 4. Specifically, the encoder 6 is mounted on the encoder 6 seat plate, and the encoder 6 seat plate is mounted on the encoder 6 seat plate mounting holes 44 on the puck frame 41 by bolts. Therefore, the rotation speed of the driving wheel 3 and the driven wheel 4 can be measured in a gear transmission mode, so that the device can adapt to the environment with low rotation speed during pipe feeding operation, and the accuracy of measurement can be improved through the meshing of gears.

An exemplary sliding connection manner is that sliding strips 411 are arranged on two sides of the pressing wheel frame 41; the sliding strip 411 is slidably inserted into a preset sliding way on the frame body 1, so as to be used for slidably connecting the pinch roller frame 41 with the frame body 1. Sliding pairs are arranged on two sides of the driven wheel 4, so that the gesture is more stable in the lifting process of the driven wheel. The sliding strip 411 is connected to the pinch roller frame 41 through bolts, so that replacement after abrasion is facilitated. Similarly, the slide way is a slide way block 12 which is connected with the side bar 11 through a bolt, and the side bar 11 is also connected with the frame body 1 through a bolt, so that the side bar can be replaced after being damaged, and is convenient to maintain.

To protect the hose 2, wear is reduced. The circumference sides of the driving wheel 3 and the driven wheel 4 are respectively provided with a soft elastic layer 32 which can be elastically deformed. Illustratively, the soft elastic layer 32 is a rubber wheel sleeve preset on the wheel body, and more preferably, the rubber wheel sleeve is a polyurethane rubber wheel, which has elasticity, wear resistance and long service life.

The exemplary drive wheel 3 further includes a central shaft 33, a swivel sleeve 34, bearings 35, a bearing 35 stop ring, long bolts 37; the central shaft 33 is used for being connected to the frame body 1 to play a supporting role, the central shaft 33 is sleeved with a bearing 35, the outer side of the bearing 35 is sleeved with a rotary sleeve 34, the driving wheel 3 body is sleeved on the outer side of the rotary sleeve 34 to achieve a rotatable role, one side of the commonly used bearing 35 is provided with a bearing 35 baffle ring, so that when the fixing nut is screwed, the fixing nut pushes the bearing 35 baffle ring, and the axial displacement of the inner ring of the bearing 35 is avoided; the preferable long bolt 37 penetrates through the driving wheel 3 body and the soft elastic layer 32 in sequence and then is screwed into a preset threaded hole of the driven gear 31, so that the driven gear 31 and the soft elastic layer 32 are fixedly connected with the driving wheel 3 body into a whole.

Example 2: reference may be made to fig. 1-7;

this example uses the same apparatus as example 1, but with a different method of use. Specifically, the first threshold value is that the rotation speed of the driven wheel 4 is 10% slower than the rotation speed of the driving wheel 3; the second threshold value is that the rotation speed of the driven wheel 4 is 30% slower than the rotation speed of the driving wheel 3; the third threshold value is that the rotation speed of the driven wheel 4 is more than 60% slower than the rotation speed of the driving wheel 3.

Advantages of this embodiment over embodiment 1:

(1) The power is transmitted through friction force, and the driven wheel 4 rotates by itself to have system resistance, so that the rotation speed difference has system error. In example 1, the first threshold was set to 5% and the cleaning was too sensitive, so that the cleaning was performed at a low speed for a long period of time, and the efficiency was lowered. In this embodiment, the first threshold is set to 10%, so that the system error can be overcome, and the efficiency is improved.

(2) When the driven wheel 4 stops rotating, the hose 2 is completely blocked and the driving wheel 3 is completely slipped, the measure of embodiment 1 is taken again, the third threshold value of embodiment 1 is too late; for the situation that the nozzle 21 is not completely blocked but the travelling speed is slow, a cleaning mode of reciprocating impact can be adopted to break through the blocking point as soon as possible, so that the efficiency is improved. In this embodiment, the third threshold is set to 60% or more, and the cleaning mode of reciprocating impact can be performed on the creep section, thereby improving the opening efficiency.

In summary, this example has a higher cleaning efficiency than example 1.

The utility model has not been described in detail in the prior art; it should be understood by those skilled in the art that any combination of the features of the foregoing embodiments may be adopted, and that all possible combinations of the features of the foregoing embodiments are not described for brevity of description, however, such combinations are not to be considered as a contradiction between the features. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. A flexible high pressure hose drive comprising a frame body (1); the two ends of the frame body (1) are respectively provided with an inlet and an outlet, and the hose (2) can penetrate through the frame body (1); the method is characterized in that: the frame body (1) is internally provided with a rotatable driving wheel (3) and a driven wheel (4), the flexible pipe (2) is clamped between the driving wheel (3) and the driven wheel (4), and is used for driving the flexible pipe (2) to move through friction between the driving wheel (3) and the wall of the flexible pipe (2) and driving the driven wheel (4) to rotate through friction between the driven wheel (4) and the wall of the flexible pipe (2) when the driving wheel (3) rotates;

the driving wheel (3) is connected with a motor and is used for driving the driving wheel (3) to rotate and detecting the rotating speed of the driving wheel (3);

the driven wheel (4) is connected with a measuring device and is used for detecting the rotating speed of the driven wheel (4);

the measuring device is electrically connected with the motor and is used for controlling the rotation of the driving wheel (3) according to the rotation speed difference value of the driving wheel (3) and the driven wheel (4).

2. A flexible high pressure hose driving apparatus according to claim 1, wherein: the driven wheel (4) is rotatably arranged on the pressing wheel frame (41); the pinch roller frame (41) is in sliding connection with the frame body (1); the two ends of the spring (42) are respectively propped against the pressing wheel frame (41) and the frame body (1) and are used for driving the driven wheel (4) to push the hose (2) to be abutted against the driving wheel (3) through self resilience force so that the hose (2) is clamped between the driving wheel (3) and the driven wheel (4).

3. A flexible high pressure hose driving apparatus according to claim 2, wherein: the motor is a servo motor (5); the measuring device is an encoder (6).

4. A flexible high pressure hose driving apparatus according to claim 3, wherein: the driving wheel (3) and the driven wheel (4) are respectively provided with a plurality of driving wheels; the driving wheels (3) and the driven wheels (4) are respectively positioned at two sides of the hose (2); at least one of the driving wheels (3) is connected with the motor; at least one driven wheel (4) is connected with the measuring device.

5. The flexible high pressure hose driving apparatus according to claim 4, wherein: the number of the driving wheel (3) and the driven wheel (4) is two.

6. The flexible high pressure hose driving apparatus according to claim 5, wherein: a driving gear (51) is connected to the output shaft of the servo motor (5); the driving wheel (3) corresponding to the servo motor (5) comprises a driven gear (31) which is coaxially connected; the driving gear (51) is in meshed connection with the driven gear (31) and is used for driving the driving wheel (3) to rotate through gear transmission by the servo motor (5); an end gear (43) is coaxially connected to the driven wheel (4) corresponding to the encoder (6); the end gear (43) is in meshed connection with a speed measuring gear (62) of the encoder (6) and is used for measuring the rotating speed of the driven wheel (4) through gear transmission;

the encoder (6) is mounted on the carriage (41) for movement with the driven wheel (4).

7. The flexible high pressure hose driving apparatus of claim 6, wherein: slide bars (411) are arranged on two sides of the pinch roller frame (41); the sliding strip (411) is slidably inserted into a preset slideway on the frame body (1) and is used for slidably connecting the pinch roller frame (41) with the frame body (1).