CN212696277U

CN212696277U - Water jet cutter

Info

Publication number: CN212696277U
Application number: CN202021598907.XU
Authority: CN
Inventors: 陈思容
Original assignee: Shenzhen Cypress Industrial Development Co ltd
Current assignee: Shenzhen Songbai Science And Technology Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-12
Anticipated expiration: 2030-08-03
Also published as: CN212696277U8

Abstract

The utility model provides a water knife, which comprises a pressure equalizing pipe, a water inlet pipe and a water outlet box; the two ends of the pressure equalizing pipe are closed, a first pressure dividing hole is formed in the middle area of the side wall of the pressure equalizing pipe along the length direction of the pressure equalizing pipe, a second pressure dividing hole is formed in the area close to the two ends of the pressure equalizing pipe, and a third pressure dividing hole is formed between the first pressure dividing hole and the second pressure dividing hole; the diameter of the second partial pressure hole is smaller than that of the first partial pressure hole; the diameter of the third partial pressure hole is smaller than that of the second partial pressure hole; the water inlet pipe is connected to the middle part of the pressure equalizing pipe; an accommodating cavity with an opening at one side is formed in the water outlet box, the opening is fixed at the side part of the pressure equalizing pipe, and all pressure dividing holes of the pressure equalizing pipe are covered; a plurality of water spray holes communicated with the accommodating cavity are formed in the other side of the water outlet box and are uniformly distributed. Through the setting of equalizer tube and play water box, rivers are formed with the even water column of position and water pressure when going out water box blowout, when wasing the circuit board, guarantee the consent and the surperficial abundant washing of circuit board, the effectual yields that improves the circuit board.

Description

Water jet cutter

Technical Field

The utility model relates to a clean technical field of circuit board, in particular to water sword.

Background

Printed circuit boards (also called PCB boards) are important electronic components, used as support for electronic components, and are carriers for electrical connection of electronic components. Printed circuit boards have evolved from single-layer to double-sided, multi-layer, and flexible, and still remain the trend toward each, due to the constant movement toward high precision, high density, and high reliability. After the PCB is drilled, the PCB needs to be cleaned to remove the scraps on the surface of the PCB and in the holes.

In the water jet cutter in the prior art, because the pressure of water sprayed out of the water jet cutter is not uniform enough, when a circuit board is cleaned, scraps are easily blocked in holes, the holes are not plugged, and a plurality of defective products are generated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water jet scalpel, the pressure of this water jet scalpel spun water is even to guarantee the consent and the abundant washing on surface to the circuit board, the effectual yields that improves the circuit board.

In order to solve the technical problem, the utility model adopts the following technical scheme:

according to one aspect of the utility model, the utility model provides a water jet cutter, which comprises a pressure equalizing pipe, a water inlet pipe and a water outlet box; the two ends of the pressure equalizing pipe are closed, a first pressure dividing hole is formed in the middle area of the side wall of the pressure equalizing pipe along the length direction of the pressure equalizing pipe, a second pressure dividing hole is formed in the area close to the two ends of the pressure equalizing pipe, and a third pressure dividing hole is formed between the first pressure dividing hole and the second pressure dividing hole; the diameter of the second partial pressure hole is smaller than that of the first partial pressure hole; the diameter of the third partial pressure hole is smaller than that of the second partial pressure hole; the water inlet pipe is connected to the middle part of the pressure equalizing pipe and is opposite to the first pressure equalizing hole, and an outlet of the water inlet pipe is communicated with the inside of the pressure equalizing pipe; an accommodating cavity with an opening at one side is formed in the water outlet box, the opening is fixed on the side part of the pressure equalizing pipe, and all pressure dividing holes of the pressure equalizing pipe are covered; the other side of the water outlet box is provided with a plurality of water spray holes communicated with the accommodating cavity, and the plurality of water spray holes are uniformly distributed; the aperture of the water spraying hole is smaller than that of the third partial pressure hole.

In some embodiments, the first pressure-dividing hole, the second pressure-dividing hole and the third pressure-dividing hole are all provided in plurality and distributed along the length direction of the pressure-equalizing pipe.

In some embodiments, the water jet scalpel further comprises a partition board, the partition board is arranged along the length direction of the water outlet box, and the peripheral side of the partition board is attached to the inner peripheral wall of the accommodating cavity; the two surfaces of the partition plate respectively face the water spray hole and the opening of the accommodating cavity; and the clapboard is provided with a plurality of through flow guide holes.

In some embodiments, the diameter of the diversion hole is smaller than the diameter of the third partial pressure hole and larger than the diameter of the water spray hole.

In some embodiments, the pilot holes are tapered holes having a diameter that decreases in a direction toward the blowholes.

In some embodiments, a step is formed in the accommodating cavity, and the partition plate is carried on the step.

In some embodiments, a distance between adjacent second partial pressure holes and a distance between adjacent third partial pressure holes are both smaller than a distance between adjacent first partial pressure holes.

In some embodiments, the number of second partial pressure holes is less than the number of first partial pressure holes and the number of third partial pressure holes.

In some embodiments, the first pressure-dividing hole occupies an area of one of the three longitudinal directions of the pressure-equalizing pipe, and the second pressure-dividing hole and the third pressure-dividing hole on either side of the first pressure-dividing hole occupy an area of one of the three longitudinal directions of the pressure-equalizing pipe.

In some embodiments, the bottom wall of the accommodating cavity is a flat plate structure, the water spray holes are arranged in multiple groups on the water outlet box along the width direction, and a plurality of water discharge holes are uniformly distributed in each group along the length direction; the water spray holes of each group are arranged in a staggered mode in sequence in the length direction of the water outlet box.

According to the above technical scheme, the utility model discloses following advantage and positive effect have at least:

the utility model discloses in, the equalizer tube both ends are sealed, and its lateral wall is equipped with first partial pressure hole in following its length direction middle part region, is equipped with the second partial pressure hole in being close to both ends region, is equipped with the third partial pressure hole between first partial pressure hole and second partial pressure hole. Water in the water inlet pipe enters the pressure equalizing pipe from the middle part of the pressure equalizing pipe, and the pressure of the water pressure in the middle part of the pressure equalizing pipe is the maximum. The water flows from the middle part to the two ends, and the water pressure at the third pressure division hole is smaller. Because the two ends of the pressure equalizing pipe are closed, when water flows to the two ends of the pressure equalizing pipe, the water pressure at the second pressure dividing hole is blocked, so that the water pressure at the third pressure dividing hole is higher than the water pressure at the third pressure dividing hole.

When the diameter of the second partial pressure hole is smaller than that of the first partial pressure hole; the diameter of the third partial pressure hole is smaller than that of the second partial pressure hole; through the drainage and the restriction effect in the partial pressure hole of different diameters size for when the equalizer tube was worn out from each partial pressure hole to water, water pressure was roughly the same.

An accommodating cavity with an opening at one side is formed in the water outlet box, the opening is fixed at the side part of the pressure equalizing pipe, and all pressure dividing holes of the pressure equalizing pipe are covered; the water pressure equalizing pipe is used for receiving water led out from the equalizing pipe, when the water moves in the accommodating cavity, the pressure along the moving direction of the water is approximately the same, and the water pressure is uniform. A plurality of hole for water spraying that intercommunication holding chamber was seted up to the opposite side of play water box, a plurality of hole for water spraying evenly distributed to make the position of following hole for water spraying spun even, pressure is roughly the same. The aperture of the water spraying hole is smaller than that of the third partial pressure hole, so that water obtains higher pressure in the water outlet box to ensure that the water sprayed out of the water outlet box has higher water pressure. Through the setting of equalizer tube and play water box, rivers are formed with the even water column of position and water pressure when going out water box blowout, when wasing the circuit board, guarantee the consent and the surperficial abundant washing of circuit board, the effectual yields that improves the circuit board.

Drawings

Fig. 1 is a schematic front structural view of an embodiment of the water jet scalpel.

Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Fig. 3 is a front sectional view of the pressure equalizing pipe in the embodiment of the water jet cutter of the present invention.

FIG. 4 is a cross-sectional view at B-B of the pressure equalizer tube of FIG. 3.

Fig. 5 is a front sectional view of the water outlet box in the embodiment of the water jet scalpel of the present invention.

Fig. 6 is a schematic bottom structure view of the water outlet box in the embodiment of the water jet scalpel of the present invention.

Fig. 7 is a cross-sectional view at C-C of the cartridge of fig. 5.

Fig. 8 is a top view of a spacer in an embodiment of the water jet cutter of the present invention.

The reference numerals are explained below:

100. a water inlet pipe; 200. a pressure equalizing pipe; 210. a first pressure-dividing hole; 220. a second pressure-dividing hole; 230. a third pressure dividing hole; 300. a water outlet box; 310. a spray head; 320. a plug; 330. an accommodating cavity; 331. a step; 340. a water spray hole; 400. a partition plate; 410. and (4) flow guide holes.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 is a schematic front structural view of an embodiment of the water jet scalpel. Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Referring to fig. 1 and 2, the present embodiment provides a water jet cutter, which is mainly used for cleaning a printed circuit board. The water jet scalpel comprises a water inlet pipe 100, a pressure equalizing pipe 200 communicated with the water inlet pipe 100, a water outlet box 300 connected to the outer side of the pressure equalizing pipe 200, and a partition plate 400 arranged in the water outlet box 300.

The water inlet pipe 100 guides water into the pressure equalizing pipe 200 so that the pressure of the water exiting from the pressure equalizing pipe 200 in the moving direction thereof is substantially the same, the water having substantially the same pressure enters the outlet box 300, and obtains a large pressure by the partition plate 400, and finally is ejected from the outlet box 300 to form a plurality of water columns. The plurality of water columns have substantially the same pressure in the moving direction thereof to uniformly clean the circuit board.

In the present embodiment, the pressure equalizer 200 is horizontally disposed, and the following directions relating to the upper, lower, left, right, top, or bottom are all referred to as the horizontal arrangement of the pressure equalizer 200.

Referring again to fig. 1, the water inlet pipe 100 is connected to the middle of the pressure equalizer 200. Specifically, the water inlet pipe 100 is vertically disposed, and the lower end thereof is connected to the upper surface of the pressure equalizing pipe 200.

The outlet of the water inlet pipe 100 communicates with the inside of the pressure equalizing pipe 200 to introduce water into the pressure equalizing pipe 200.

In this embodiment, a filter screen (not shown) is disposed in the water inlet pipe 100 to filter water and guide the water into the pressure equalizing pipe 200, and the filter screen is detachably installed in the water inlet pipe 100 to facilitate cleaning or replacing the filter screen.

In this embodiment, the diameter of the outlet of the water inlet pipe 100 is 21 mm.

Fig. 3 is a front sectional view of the pressure equalizing pipe in the embodiment of the water jet cutter of the present invention. FIG. 4 is a cross-sectional view at B-B of the pressure equalizer tube of FIG. 3.

Referring to fig. 3 and 4, both ends of the pressure equalizing tube 200 are closed, so that a chamber closed at both ends is formed inside the pressure equalizing tube 200. In this embodiment, the pressure equalizing pipe 200 is horizontally disposed, and both ends of the pressure equalizing pipe 200 in the length direction are closed.

The side wall of the pressure equalizing pipe 200 is provided with a plurality of pressure equalizing holes along the length direction thereof. The pressure equalizing hole includes a first pressure dividing hole 210 provided at a middle region of a sidewall of the pressure equalizing pipe 200, a second pressure dividing hole 220 near both end regions, and a third pressure dividing hole 230 provided between the first pressure dividing hole 210 and the second pressure dividing hole 220.

In this embodiment, the pressure equalizing pipe 200 is horizontally disposed, and the first pressure dividing hole 210, the second pressure dividing hole 220 and the third pressure dividing hole 230 are all disposed at the bottom of the pressure equalizing pipe 200 and penetrate through the wall thickness of the pressure equalizing pipe 200. The third pressure-dividing holes 230 are arranged at both sides of the first pressure-dividing hole 210.

The partial pressure hole is disposed opposite to the water inlet pipe 100. In this embodiment, the pressure dividing hole is disposed at the bottom of the pressure equalizing pipe 200, and the water inlet pipe 100 is connected to the upper portion of the pressure equalizing pipe 200.

In this embodiment, the inner circumference of the pressure equalizing pipe 200 is circular, and the pressure dividing holes are formed in the bottom of the pressure equalizing pipe 200, so that water is gathered at the bottom end of the inner circumference of the pressure equalizing pipe 200, and the stability of water discharged from the pressure dividing holes is ensured.

The water in the water inlet pipe 100 enters the pressure equalizing pipe 200 from the middle of the pressure equalizing pipe 200, and the water pressure is the largest in the middle of the pressure equalizing pipe 200. The water flows from the middle to both ends, and the water pressure at the third partial pressure hole 230 is small. Both ends of the pressure equalizing pipe 200 are closed, and water flowing to both ends of the pressure equalizing pipe 200 is blocked, so that the water pressure at the second pressure dividing hole 220 is greater than the water pressure at the third pressure dividing hole 230.

The diameter of the second partial pressure hole 220 is smaller than that of the first partial pressure hole 210; the diameter of the third partial pressure hole 230 is smaller than that of the second partial pressure hole 220; through the drainage and restriction of the pressure dividing holes with different diameters, the water pressure is approximately the same when the water passes out of the pressure equalizing pipe 200 from each of the 4 pressure dividing holes.

In this embodiment, the diameter of the first partial pressure hole 210 is smaller than the diameter of the outlet of the inlet pipe 100, and the diameter of the first partial pressure hole 210 is larger than the diameter of the second partial pressure hole 220.

The first pressure dividing holes 210, the second pressure dividing holes 220 and the second pressure dividing holes 220 are all provided in plurality and distributed along the length direction of the pressure equalizing pipe 200.

The pressure of the water in the pressure equalizing pipe 200 at the first pressure dividing hole 210, the second pressure dividing hole 220 and the third pressure dividing hole 230 is different, so that the flow rate of the water is different. The distance between the adjacent second pressure-dividing holes 220 and the distance between the adjacent third pressure-dividing holes 230 are smaller than the distance between the adjacent first pressure-dividing holes 210. So that the flow rates of water passing through the first pressure-dividing hole 210, the second pressure-dividing hole 220, and the third pressure-dividing hole 230 per unit time are substantially the same.

In the present embodiment, the number of the second pressure-dividing holes 220 is smaller than the number of the first pressure-dividing holes 210 and the number of the third pressure-dividing holes 230. The water is blocked at both ends of the pressure equalizer tube 200, and the water flow is at a higher pressure near the ends, which are at a lower location. A smaller number of second pressure-dividing holes 220 are provided at both ends of the pressure-equalizing tube 200 to correspond to the water pressure at the ends of the pressure-equalizing tube 200 such that the water pressure of the water discharged from each of the second pressure-dividing holes 220 is substantially the same.

In this embodiment, the first pressure-dividing hole 210 occupies one of three longitudinal areas of the pressure-equalizing tube 200, and the second pressure-dividing hole 220 and the third pressure-dividing hole 230 on either side of the first pressure-dividing hole 210 occupy the other one of the three longitudinal areas of the pressure-equalizing tube 200.

In one embodiment, eight first pressure-dividing holes 210 are provided, the diameter of each first pressure-dividing hole 210 is 8mm, and the distance between two adjacent first pressure-dividing holes 210 is 30 mm. The number of the third pressure dividing holes 230 is sixteen, the number of the third pressure dividing holes 230 is eight on each side of the first pressure dividing hole 210, the third pressure dividing holes 230 on both sides of the first pressure dividing hole 210 are symmetrically arranged, the diameter of each third pressure dividing hole 230 is 4mm, and the distance between every two adjacent third pressure dividing holes 230 is 21 mm. The number of the second pressure dividing holes 220 is four, the number of the second pressure dividing holes 220 is two on each side of the first pressure dividing hole 210, the second pressure dividing holes 220 on both sides of the first pressure dividing hole 210 are symmetrically arranged, the diameter of each second pressure dividing hole 220 is 5mm, and the distance between every two adjacent second pressure dividing holes 220 is 21 mm.

Fig. 5 is a front sectional view of the water outlet box in the embodiment of the water jet scalpel of the present invention. Fig. 6 is a schematic bottom structure view of the water outlet box in the embodiment of the water jet scalpel of the present invention. Fig. 7 is a cross-sectional view at C-C of the cartridge of fig. 5.

Referring to fig. 6, in the embodiment, the water outlet box 300 includes a nozzle 310 and plugs 320 fixed at two ends of the nozzle 310, the nozzle 310 is a strip-shaped structure, the nozzle 310 is provided with a groove along a length direction, the groove penetrates through two ends of the nozzle 310, the plugs 320 close two ends of the groove, and an accommodating cavity 330 with an opening at one side is formed between the nozzle 310 and the plugs 320.

The opening of the water outlet box 300 is fixed on the side part of the pressure equalizing tube 200, and the opening of the water outlet box 300 covers all the pressure dividing holes of the pressure equalizing tube 200.

In this embodiment, the water outlet box 300 is horizontally disposed and fixed on the lower surface of the pressure equalizing tube 200.

One side of the water outlet box 300, which is away from the opening, is provided with a plurality of water spraying holes 340, and the water spraying holes 340 penetrate through the wall thickness of the water outlet box 300 and are communicated with the accommodating cavity 330. The water in the pressure equalizing pipe 200 flows into the accommodating cavity 330 from the pressure dividing holes and is sprayed out from the water spraying holes 340 to clean the circuit board.

The diameter of the water spraying hole 340 is smaller than that of the third pressure dividing hole 230, and the water gathers a larger pressure in the accommodating chamber 330, so that the water sprayed from the water spraying hole 340 has a larger impact force.

In this embodiment, the bottom wall of the accommodating cavity 330 is a flat plate structure, the water spraying holes 340 are arranged in multiple groups along the width direction of the water outlet box 300, and a plurality of water discharging holes are uniformly distributed in each group along the length direction of the water outlet box 300; the sets of water outlets 340 are staggered in the longitudinal direction of the outlet box 300, so that when the circuit board moves in the width direction of the outlet box 300, the circuit board is cleaned without gaps.

The distance between two adjacent water spray holes 340 of each row is 3-4 times the diameter of the water spray holes 340. In this embodiment, the diameter of each water spraying hole 340 is 0.5mm, the water spraying holes 340 are arranged in three rows, the three rows of water spraying holes 340 are staggered in sequence along the length direction of the water outlet box 300, and the interval in the length direction of the water outlet box 300 is 0.5mm, so that cleaning without gaps is formed.

A step 331 is formed in the receiving cavity 330, and the step 331 is used for bearing the partition 400.

Referring to fig. 1, fig. 2 and fig. 8, in the present embodiment, the partition board 400 is disposed along the length direction of the water outlet box 300, and the peripheral side of the partition board 400 is attached to the inner peripheral wall of the accommodating cavity 330. The two surfaces of the partition 400 face the water spray hole 340 and the opening of the receiving chamber 330, respectively.

In this embodiment, the partition board 400 is disposed horizontally, and the accommodating cavity 330 is divided into an upper chamber and a lower chamber by the partition board 400.

The partition 400 is provided with a plurality of flow guide holes 410, and the extending direction of the flow guide holes 410 is parallel to the axial direction of the pressure dividing holes.

The plurality of flow guide holes 410 are formed along the length direction of the separator 400 and correspond to the pressure dividing holes. The aperture of the diversion hole 410 is smaller than the aperture of the third pressure division hole 230 and larger than the aperture of the water spray hole 340. The aperture of the flow guide hole 410 is smaller than that of the third pressure dividing hole 230, so that the water obtains a greater water pressure due to the spatial restriction in the chamber above the partition 400. The diameter of the flow guide holes 410 is larger than that of the water spray holes 340, so that water obtains a larger water pressure due to the space limitation in the chamber below the partition 400, and the water has a larger impact force when being sprayed out of the water spray holes 340. Meanwhile, the continuous spraying of the water flow from the water spraying holes 340 can be effectively ensured, and the continuity of the water flow is kept.

The guide holes 410 are tapered holes whose hole diameters are gradually reduced in a direction toward the spouting holes 340. To increase the water pressure at the outlet of the pilot hole 410. In this embodiment, the flow guide holes 410 are vertically arranged, the flow guide holes 410 are large in top and small in bottom, the diameter of the upper end of the flow guide hole 410 is 3mm, and the diameter of the lower end of the flow guide hole 410 is 2 mm.

The utility model discloses in, the pressure-equalizing pipe 200 both ends are sealed, and its lateral wall is equipped with first partial pressure hole 210 in following its length direction middle part region, is equipped with second partial pressure hole 220 in being close to both ends region, is equipped with third partial pressure hole 230 between first partial pressure hole 210 and second partial pressure hole 220. The water in the water inlet pipe 100 enters the pressure equalizing pipe 200 from the middle of the pressure equalizing pipe 200, and the water pressure is the maximum in the middle of the pressure equalizing pipe 200. The water flows from the middle to both ends, and the water pressure at the third partial pressure hole 230 is small. Since both ends of the pressure equalizing pipe 200 are closed, water flowing to both ends of the pressure equalizing pipe 200 is blocked, so that the water pressure at the second pressure dividing hole 220 is greater than the water pressure at the third pressure dividing hole 230.

When the diameter of the second partial pressure hole 220 is smaller than that of the first partial pressure hole 210; the diameter of the third partial pressure hole 230 is smaller than that of the second partial pressure hole 220; through the drainage and restriction of the partial pressure holes with different diameters, when water passes through the pressure equalizing pipe 200 from each partial pressure hole, the water pressure is approximately the same.

An accommodating cavity 330 with an opening at one side is formed in the water outlet box 300, the opening is fixed at the side part of the pressure equalizing tube 200 and covers all the pressure dividing holes of the pressure equalizing tube 200; to receive the water guided from the pressure equalizing tube 200, when the water moves in the accommodating chamber 330, the pressure along the moving direction is substantially the same, and the water pressure is uniform. The other side of the outlet box 300 is provided with a plurality of water spraying holes 340 communicated with the accommodating cavity 330, and the plurality of water spraying holes 340 are uniformly distributed, so that the positions of the water sprayed from the water spraying holes 340 are uniform, and the pressure is approximately the same. The diameter of the water spraying hole 340 is smaller than that of the third pressure dividing hole 230, so that the water obtains a larger pressure in the water outlet box 300 to ensure that the water sprayed from the water outlet box 300 has a larger water pressure. Through the setting of equalizer tube 200 and play water box 300, rivers are formed with the position and the even water column of water pressure when going out water box 300 blowout, when wasing the circuit board, guarantee the abundant washing to the consent and the surface of circuit board, the effectual yields that improves the circuit board.

In this embodiment, the water jet cutter is arranged as one, the pressure equalizing pipe 200 is horizontally arranged, and the water outlet box 300 sprays water downwards to clean the circuit board. The cleaning of the circuit board is suitable for each process step in the circuit board processing process.

In some embodiments, the two water knives are arranged symmetrically up and down to clean the upper and lower surfaces of the circuit board simultaneously.

In other implementations, the water jet blades are arranged in multiple groups, the multiple groups of water jet blades are arranged along the horizontal direction, and each group comprises two water jet blades which are symmetrically arranged up and down so as to continuously clean the circuit board.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A water jet scalpel, comprising:

the two ends of the pressure equalizing pipe are closed, a first pressure dividing hole is formed in the middle area of the side wall of the pressure equalizing pipe along the length direction of the pressure equalizing pipe, a second pressure dividing hole is formed in the area close to the two ends of the pressure equalizing pipe, and a third pressure dividing hole is formed between the first pressure dividing hole and the second pressure dividing hole; the diameter of the second partial pressure hole is smaller than that of the first partial pressure hole; the diameter of the third partial pressure hole is smaller than that of the second partial pressure hole;

the water inlet pipe is connected to the middle part of the pressure equalizing pipe and is opposite to the first pressure dividing hole, and an outlet of the water inlet pipe is communicated with the inside of the pressure equalizing pipe;

the water outlet box is internally provided with an accommodating cavity with an opening at one side, the opening is fixed at the side part of the pressure equalizing pipe and covers all pressure dividing holes of the pressure equalizing pipe; the other side of the water outlet box is provided with a plurality of water spray holes communicated with the accommodating cavity, and the plurality of water spray holes are uniformly distributed; the aperture of the water spraying hole is smaller than that of the third partial pressure hole.

2. The water jet cutter according to claim 1, wherein the first pressure dividing hole, the second pressure dividing hole and the third pressure dividing hole are provided in plurality and distributed along the length direction of the pressure equalizing pipe.

3. The water jet scalpel according to claim 1, further comprising a partition plate, wherein the partition plate is arranged along the length direction of the water outlet box, and the peripheral side of the partition plate is attached to the inner peripheral wall of the accommodating cavity; the two surfaces of the partition plate respectively face the water spray hole and the opening of the accommodating cavity; and the clapboard is provided with a plurality of through flow guide holes.

4. The water jet cutter as claimed in claim 3, wherein the diameter of the flow guide hole is smaller than that of the third partial pressure hole and larger than that of the water jet hole.

5. The water jet cutter as claimed in claim 4, wherein the guide hole is a tapered hole having a diameter gradually decreasing in a direction toward the water jetting hole.

6. The water jet scalpel according to claim 3, wherein the accommodating cavity is formed with a step, and the partition is carried on the step.

7. The water jet cutter according to claim 2, wherein a distance between adjacent second pressure-dividing holes and a distance between adjacent third pressure-dividing holes are each smaller than a distance between adjacent first pressure-dividing holes.

8. The water jet cutter according to claim 2, wherein the number of the second partial pressure holes is smaller than the number of the first partial pressure holes and the number of the third partial pressure holes.

9. The water jet cutter according to claim 2, wherein the first pressure dividing hole occupies an area of one of three sides in the length direction of the pressure equalizing pipe, and the second pressure dividing hole and the third pressure dividing hole on either side of the first pressure dividing hole occupy an area of one of three sides in the length direction of the pressure equalizing pipe.

10. The water knife according to claim 1, wherein the bottom wall of the accommodating cavity is of a flat plate structure, the plurality of groups of the water spraying holes are arranged on the water outlet box along the width direction, and a plurality of water discharging holes are uniformly distributed on each group along the length direction; the water spray holes of each group are arranged in a staggered mode in sequence in the length direction of the water outlet box.