Combined drilling device for valve shell

Abstract

The invention relates to the field of drilling machining, in particular to a valve shell combined drilling device which comprises a base, a drilling mechanism, a limiting mechanism and a supporting mechanism. The drilling mechanism comprises a drill rod parallel to the axis of the flange plate, the supporting mechanism comprises a first sealing sleeve, a second sealing sleeve and a connecting pipeline, the first sealing sleeve and the second sealing sleeve are both of cylindrical structures, are coaxial and are in sliding connection in the axial direction, and the connecting pipeline is connected with the first sealing sleeve and the second sealing sleeve; and the amount of the cooling liquid entering the second sealing sleeve is positively correlated with the thickness of the flange plate. The first sealing sleeve and the second sealing sleeve are arranged to abut against the two sides of the flange plate correspondingly, the drill rod can be guided, cuttings splashing and curled edge burrs at the drilling position can be reduced, the flange plate can be clamped in an auxiliary mode, and the first sealing sleeve and the second sealing sleeve can jointly act with a connecting pipeline to control the amount of cooling liquid at the drill rod; and cuttings in the drill hole of the flange plate are brought out while the drill rod is cooled by using the cooling liquid, so that the drilling quality is improved.

Description

Technical Field

[0001] The invention relates to the field of drilling processing, and in particular to a combined drilling device for a valve housing. Background Art

[0002] Drilling the flange of a valve housing is a critical process in valve manufacturing. Its primary purpose is to provide mounting holes for the flange, which are used for connection to pipelines and other equipment. High-precision drilling is required to ensure a tight seal and reliable connections. Precise positioning and clamping are required before drilling, and the position and verticality of the holes must be strictly controlled during drilling to avoid inaccurate flange installation. Chips generated during the drilling process can easily damage the flange end face, and curling and burrs can easily form at the exit of the hole when the hole is drilled through, compromising drilling quality and, in turn, affecting subsequent flange installation and sealing performance. Summary of the Invention

[0003] The present invention provides a combined drilling device for a valve housing, so as to solve the problem in the prior art that the drilling quality is prone to defects when drilling a flange.

[0004] The combined drilling device for a valve housing of the present invention adopts the following technical solution: The cam is connected to the flange of the valve body by a plurality of channels, and the channels are connected to the flange by a plurality of channels.

[0005] Optionally, a filter cartridge is rotatably mounted on a side of the first sleeve away from the flange, and the filter cartridge rotates in the same direction and at the same speed as the drill rod to collect chips.

[0006] Optionally, the connecting pipe includes an outer tube connected to the first sleeve and a valve core connected to the second sleeve, and one end of the outer tube is socketed with one end of the valve core; coolant is continuously introduced into the outer tube when the drill rod is drilling, and a conical valve port is opened in the outer tube; the interior of the valve core is hollow and connected to the interior of the second sleeve, and the valve core is sealed and slidably fitted with the inner wall of the outer tube, and the end of the valve core close to the outer tube is connected to a conical block adapted to the conical valve port, the greater the distance between the outer tube and the valve core, the larger the gap between the conical block and the conical valve port, and the more coolant enters the valve core.

[0007] Optionally, the limiting mechanism includes a linkage disk and a limiting disk; the linkage disk is rotatably mounted on the base, and the rotation axis is parallel to the drill rod; a guide hole, a first guide groove and a second guide groove of the same shape and offset in sequence along the radial direction of the linkage disk are opened on the linkage disk, the guide hole passes through the two side surfaces of the linkage disk, and includes a coaxial section and an offset section that are connected in sequence, the coaxial section is coaxial with the linkage disk, the offset section is inclined, and one end close to the coaxial section is located on the side of the center of the linkage disk close to the other end; the first guide groove and the second guide groove are opened on the same side of the linkage disk, and from the offset section to the coaxial section In the direction of the shaft section, the depth of the coaxial section of the first guide groove gradually decreases, and the depth of the coaxial section of the second guide groove gradually increases; the limit plate is installed on the base, and is located on the side of the linkage plate where the first guide groove is opened; the first sleeve is connected to the first push rod, and the second sleeve is connected to the second push rod; the first push rod and the second push rod both pass through the limit plate, and the limit plate limits the first push rod and the second push rod from rotating with the linkage plate; one end of the first push rod is provided with a protrusion abutting the first guide groove and a guide rod passing through the guide hole, and the second push rod slides with the first push rod and abuts against the second guide groove.

[0008] Optionally, a first elastic member is provided between the first push rod and the limiting plate, and the first elastic member urges the protrusion to abut against the first guide groove; a second elastic member is provided between the first push rod and the second push rod, and the second elastic member urges the second push rod to abut against the second guide groove.

[0009] Optionally, an inclined spring sheet is provided in the coaxial section of the first guide groove, which gradually reduces the depth of the coaxial section of the first guide groove and is used to abut against the protrusion of the first push rod.

[0010] Optionally, a liquid storage tank is fixed on the first sleeve, the liquid storage tank is filled with coolant, and the liquid storage tank is connected to the interior of the outer cylinder through a hose; when the filter cylinder rotates, the cylinder transmission assembly drives the coolant in the liquid storage tank to flow to the outer cylinder.

[0011] Optionally, there are multiple drill rods and support mechanisms, which are distributed at circumferential intervals around the linkage disk; the limit disk is coaxial with the linkage disk, and the limit disk can rotate synchronously with the linkage disk, thereby driving the support mechanism to rotate synchronously to change the clamping position of the first sleeve and the second sleeve on the flange, and the limit disk is locked with the base after rotation adjustment.

[0012] Optionally, the initial length of the first push rod is adjustable and locked after adjustment.

[0013] Optionally, a sealing ring is provided at one end of the first and second sealing sleeves close to the flange, and the inner ring of the sealing ring does not exceed the inner ring of the second sealing sleeve.

[0014] The beneficial effects of the present invention are as follows: the combined drilling device of the valve housing of the present invention is provided with a first seal and a second seal which are respectively abutted against both sides of the flange, which can not only guide the drill rod and reduce chip splashing and curling burrs at the drilling site, but also assist in clamping the flange, and can work together with the connecting pipe to control the amount of coolant at the drill rod, and use the coolant to cool the drill rod while taking out the chips in the flange drilling hole, thereby ensuring the drilling effect and improving the drilling quality.

[0015] Furthermore, the filter cartridge, which rotates at the same speed and in the same direction as the drill rod, rotates synchronously with the chips discharged from the spiral guide groove of the drill rod, thereby reducing the relative rotation of the chips and the filter cartridge, thereby reducing the splashing of the chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a combined drilling device for a valve housing according to the present invention; Figure 2 A schematic cross-sectional view of the overall structure of an embodiment of a combined drilling device for a valve housing according to the present invention; Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle; Figure 4 for Figure 2 A magnified schematic diagram of point B in the middle; Figure 5 for Figure 4 The enlarged schematic diagram of point C in the middle; Figure 6 This is a disassembled schematic diagram of an embodiment of a combined drilling device for a valve housing according to the present invention; Figure 7 A schematic structural diagram of a linkage disk in an embodiment of a combined drilling device for a valve housing according to the present invention; Figure 8 This is a structural schematic diagram of a support structure in an embodiment of a combined drilling device for a valve housing of the present invention; Figure 9 This is a schematic diagram of the disassembled support structure of an embodiment of a combined drilling device for a valve housing of the present invention.

[0018] In the figure: 100, base; 210, drill rod; 220, sliding turntable; 300, supporting mechanism; 320, first envelope; 330, second envelope; 340, connecting pipe; 341, outer tube; 342, valve core; 360, first push rod; 361, bump; 362, guide rod; 363, first elastic member; 370, second push rod; 371, second elastic member; 380, liquid storage tank; 381, auger blade; 390, filter cartridge; 400, valve housing; 410, flange; 500, limiting mechanism; 510, linkage disk; 511, guide hole; 512, first guide groove; 513, second guide groove; 520, limiting disk; 521, sliding hole. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] An embodiment of a combined drilling device for a valve housing of the present invention is used to drill a flange 410 of a valve housing 400, such as Figures 1 to 9 As shown, it includes a base 100 and a drilling mechanism arranged on the base 100 , a limiting mechanism 500 and a supporting mechanism 300 arranged on the limiting mechanism 500 .

[0021] The drilling mechanism includes a drill rod 210 that is parallel to the axis of the flange 410. The drill rod 210 can rotate and move along its axial direction to drill a hole in the flange 410. Specifically, the base 100 is provided with a sliding turntable 220 that moves along the axial direction of the drill rod 210. The sliding turntable 220 moves along a guide rail provided on the base 100, and the sliding turntable 220 is equipped with a motor for driving the drill rod 210 to rotate. The configuration of the sliding turntable 220 and the drill rod 210 is both conventional, and their working principles are not described in detail here.

[0022] The support mechanism 300 includes a first sleeve 320, a second sleeve 330, and a connecting pipe 340. The first and second sleeves 320, 330 are both cylindrical, coaxial, and slidably connected along their axial direction. The inner diameters of the first and second sleeves 320, 330 are consistent with the size of the hole to be drilled in the drill rod 210. The first and second sleeves 320, 330 are located on either side of the flange 410 in the axial direction and, under the action of the limiting mechanism 500, approach each other until they abut against the flange 410. After passing through the first sleeve 320, the drill rod 210 drills a hole in the flange 410 and then enters the second sleeve 330. The connecting pipe 340 connects the first and second sleeves 320, 330 and is provided with a liquid channel inside that allows coolant to flow into the second sleeve 330. The connecting pipe 340 ensures that the amount of coolant entering the second sleeve 330 is positively correlated with the thickness of the flange 410.

[0023] When drilling a hole in the flange 410, the limiting mechanism 500 first causes the first and second sleeves 320 and 330 to abut against the axial sides of the flange 410, respectively. The drill rod 210 then enters the first sleeve 320 to drill the hole. The drilled chips are then discharged within and along the first sleeve 320, preventing them from splashing and damaging the end surface of the flange 410. Furthermore, because the second sleeve 330 abuts the flange 410, the drill rod 210 is restrained by the second sleeve 330 when drilling through the flange 410, making curling and burrs less likely to form at the drilling site. After drilling through the flange 410, the drill rod 210 enters the second sleeve 330. Coolant within the second sleeve 330 enters the first sleeve 320 through the drill hole, cooling the drill rod 210 within the hole. The thicker the flange 410 is, the more heat the drill rod 210 generates during drilling. By making the amount of coolant entering the second sleeve 330 positively correlated with the thickness of the flange 410, the cooling effect on the drill rod 210 is ensured, and the coolant flowing from the second sleeve 330 to the first sleeve 320 can also remove the chips remaining in the hole drilled in the flange 410.

[0024] The first sleeve 320 and the second sleeve 330 are respectively arranged to abut against the two sides of the flange 410, which can not only guide the drill rod 210 and reduce chip splashing and curling burrs at the drill hole, but also assist in clamping the flange 410, and can work together with the connecting pipe 340 to control the amount of coolant at the drill rod 210, using the coolant to cool the drill rod 210 while taking out the chips in the drill hole of the flange 410, thereby ensuring the drilling effect and improving the drilling quality.

[0025] In this embodiment, a filter cartridge 390 is rotatably mounted on the side of the first housing 320 away from the flange 410. The filter cartridge 390 rotates in the same direction and at the same speed as the drill rod 210 to collect chips. Rotating in the same direction and at the same speed as the drill rod 210, the filter cartridge 390 rotates synchronously with the chips discharged from the spiral guide groove of the drill rod 210, reducing relative rotation between the chips and the filter cartridge 390 and, consequently, reducing chip splashing.

[0026] In this embodiment, the connecting pipe 340 includes an outer tube 341 connected to the first housing 320 and a valve core 342 connected to the second housing 330. One end of the outer tube 341 is sleeved onto one end of the valve core 342. Coolant continuously flows into the outer tube 341 during drilling by the drill rod 210, and a conical valve port is defined within the outer tube 341. The valve core 342 is hollow and communicates with the interior of the second housing 330 via a flexible tube. The valve core 342 slides in a sealed manner against the inner wall of the outer tube 341, and a conical block is connected to the end of the valve core 342 closest to the outer tube 341, which mates with the conical valve port. The greater the distance between the outer tube 341 and the valve core 342, the larger the gap between the conical block and the conical valve port, allowing more coolant to enter the valve core 342, and consequently, more coolant to enter the second housing 330 through the valve core 342. The thicker the flange 410 is, the larger the distance between the first and second seals 320 and 330 is, and the larger the distance between the outer tube 341 and the valve core 342 is.

[0027] In this embodiment, the limiting mechanism 500 includes a linkage disk 510 and a limiting disk 520. The linkage disk 510 is rotatably mounted on the base 100, with its axis of rotation parallel to the drill rod 210. Specifically, a ring gear is fixed to the outside of the linkage disk 510, a second motor is mounted on the base 100, and a gear meshing with the outer ring gear of the linkage disk 510 is mounted on the output shaft of the second motor. The linkage disk 510 is provided with a guide hole 511, a first guide groove 512, and a second guide groove 513, all of the same shape and offset in sequence along the radial direction of the linkage disk 510. The guide hole 511 extends through both sides of the linkage disk 510 and includes a coaxial section and an offset section that are connected in sequence. The coaxial section is coaxial with the linkage disk 510, and the offset section is tilted relative to the radial direction of the linkage disk 510, with one end near the coaxial section located on the side of the other end near the center of the linkage disk 510. The first guide groove 512 and the second guide groove 513 are opened on the same side of the linkage disk 510, and the depth of the coaxial section of the first guide groove 512 gradually decreases from the offset section to the coaxial section, while the depth of the coaxial section of the second guide groove 513 gradually increases. The limiting plate 520 is installed on the base 100 and is located on the side of the first guide groove 512 of the linkage plate 510; the first sleeve 320 is connected to the first push rod 360, and the second sleeve 330 is connected to the second push rod 370; the first push rod 360 and the second push rod 370 are connected in an axial sliding manner and both pass through the limiting plate 520, and the limiting plate 520 limits the first push rod 360 and the second push rod 370 from rotating with the linkage plate 510 and allows the first push rod 360 and the second push rod 370 to move radially along the linkage plate 510; specifically, a sliding hole 521 extending radially along the linkage plate 510 is provided on the limiting plate 520, and the first push rod 360 and the second push rod 370 both pass through the sliding hole 521 and are limited by the sliding hole 521 to rotate with the linkage plate 510. One end of the first push rod 360 is provided with a protrusion 361 that slidably engages with the first guide groove 512 and a guide rod 362 that passes through the guide hole 511. The second push rod 370 slidably engages with the second guide groove 513. The movement of the guide rod 362 along the guide hole 511 guides and drives the movement of the first push rod 360 and the second push rod 370. In the initial state, the guide rod 362, the protrusion 361 and the second push rod 370 respectively cooperate with the offset sections of the guide hole 511, the first guide groove 512 and the second guide groove 513, and the first sleeve 320 and the second sleeve 330 are both located on the outside of the flange 410; the linkage disk 510 rotates so that the guide rod 362, the protrusion 361 and the second push rod 370 respectively move along the offset sections of the guide hole 511, the first guide groove 512 and the second guide groove 513, so that the first push rod 360 and the second push rod 370 move along the sliding hole 521 toward the center of the linkage disk 510, and the first push rod 360 drives the first sleeve 320, and the second push rod 370 drives the second sleeve 330 to approach the flange 410 until they are located on both sides of the flange 410.Afterwards, the linkage disk 510 continues to rotate, so that the guide rod 362, the protrusion 361 and the second push rod 370 move along the coaxial sections of the guide hole 511, the first guide groove 512 and the second guide groove 513 respectively. Since the depth of the coaxial section of the first guide groove 512 gradually decreases and the depth of the coaxial section of the second guide groove 513 gradually increases along the direction from the offset section to the coaxial section, the protrusion 361 pushes the first push rod 360 to drive the first sleeve 320 to move and abut against the flange 410 under the push of the coaxial section of the first guide groove 512, and the second push rod 370 slidingly matched with the second guide groove 513 drives the second sleeve 330 to move and abut against the flange 410, until the first sleeve 320 and the second sleeve 330 are respectively pressed against the flange 410, and the linkage disk 510 stops rotating.

[0028] In this embodiment, a first elastic member 363 is disposed between the first push rod 360 and the limiting plate 520. The first elastic member 363 forces the protrusion 361 to abut against the first guide groove 512. A second elastic member 371 is disposed between the first push rod 360 and the second push rod 370. The second elastic member 371 forces the second push rod 370 to abut against the second guide groove 513. The first elastic member 363 and the second elastic member 371 are provided to maintain the first push rod 360 and the second push rod 370 in abutment with the linkage plate 510. The protrusion 361 and the first guide groove 512, and the second push rod 370 and the second guide groove 513, do not need to be slidably connected; they only need to maintain abutment.

[0029] In this embodiment, an inclined spring plate is disposed within the coaxial section of the first guide groove 512. This spring plate gradually reduces the depth of the coaxial section of the first guide groove 512 and is configured to abut against the protrusion 361 of the first push rod 360. The inclined spring plate facilitates abutment between the first sleeve 320 and the flange 410 via the first push rod 360, and can deform to prevent the linkage disk 510 from excessively rotating, which could damage the flange 410 caused by the first sleeve 320, or cause deformation or breakage of the first push rod 360.

[0030] In this embodiment, a liquid reservoir 380 is fixed to the first housing 320. The liquid reservoir 380 is filled with coolant and communicates with the interior of the outer cylinder 341 via a hose. When the filter cartridge 390 rotates, the cylinder transmission assembly drives the coolant in the liquid reservoir 380 to flow toward the outer cylinder 341. Preferably, the liquid reservoir 380 is connected to the exterior of the filter cartridge 390. The filter cartridge 390 is rotatably mounted on the end of the first housing 320 away from the flange 410 via a bearing and driven by a first motor mounted on the limit plate 520. The first motor drives the filter cartridge 390 to rotate via a gear assembly. A liquid outlet is defined at the bottom of the liquid reservoir 380, communicating with the outer cylinder 341 via a hose. An auger blade 381 is rotatably mounted within the outlet. The transmission assembly includes a ring gear arranged on the outside of the filter cartridge 390 and a gear installed on the central axis of the auger blade 381. The ring gear is perpendicular to the gear axis and meshes with each other. When the filter cartridge 390 rotates, it drives the auger blade 381 to rotate. The auger blade 381 delivers the coolant in the liquid storage tank 380 to the outer cylinder 341 through a hose.

[0031] In this embodiment, there are multiple drill rods 210 and support mechanisms 300, which are spaced apart circumferentially around the linkage disk 510. The limit disk 520 is coaxial with the linkage disk 510 and can rotate synchronously with the linkage disk 510, thereby driving the support mechanism 300 to rotate synchronously, thereby changing the clamping position of the first and second sleeves 320 and 330 on the flange 410. After the limit disk 520 is rotated and adjusted, it is locked to the base 100 via a bolt assembly. When the limit disk 520 needs to be adjusted, it is only necessary to first release the lock between the limit disk 520 and the base 100, start the second motor, and the limit disk 520, under the linkage of the guide rod 362 of the first push rod 360, rotates synchronously with the linkage disk 510, driving the support mechanism 300 to rotate synchronously and change its relative position with the flange 410. Then, the second motor is turned off and the limit disk 520 is locked to the base 100 again.

[0032] In this embodiment, the initial length of the first push rod 360 is adjustable and locked after adjustment, thereby adjusting the relative position of the first and second sleeves 320, 330 to the flange 410 before clamping the flange 410. Specifically, the first push rod 360 is a telescopic rod consisting of an outer tube and an inner rod, which is locked by a screw that passes through the outer tube and abuts the inner rod, or a sleeve rod consisting of two threaded pipes threaded together, which can be extended or shortened by relative rotation, utilizing its own threads to self-lock. Preferably, a scale can be provided on the first push rod 360 to accommodate valve housings 400 of different specifications.

[0033] In this embodiment, sealing rings are provided on the ends of the first and second sleeves 320 and 330 proximal to the flange 410, and the inner rings of the sealing rings do not extend beyond the inner ring of the second sleeve 330. Specifically, an annular protrusion is provided on the inner rings of the ends of the first and second sleeves 320 and 330 proximal to the flange 410. The outer circumferential wall of the annular protrusion does not extend beyond the outer circumferential wall of the first or second sleeve 320 or 330. The sealing ring is positioned outside the annular protrusion and extends axially beyond the end of the annular protrusion within the first or second sleeve 320 or 330, thereby abutting against the flange 410 and preventing coolant from flowing out. This also acts as a buffer against the abutment between the first and second sleeves 320 and 330 and the flange 410, reducing damage to the end surface of the flange 410.

[0034] When using the combined drilling device for a valve housing according to the present invention, the valve housing 400 must be mounted on the base 100, with the axis of the flange 410 of the valve housing 400 aligned horizontally. A corresponding number of drilling mechanisms and limiting mechanisms 500 can be adaptively installed based on the number of flanges 410 in the valve housing 400. Before drilling, the length of the first push rod 360 is adjusted so that the first and second sleeves 320, 330 are positioned on either side of the flange 410, respectively, and the spacing between the first and second sleeves 320, 330 and the flange 410 is kept as consistent as possible. Then the second motor is started, and the second motor drives the linkage disk 510 to rotate. The linkage disk 510 drives the guide rod 362 to move along the offset section of the guide hole 511. Under the restriction of the sliding hole 521 on the limit plate 520, the first push rod 360 and the second push rod 370 move along the sliding hole 521 toward the center of the linkage disk 510. The first push rod 360 drives the first envelope 320, and the second push rod 370 drives the second envelope 330 to approach the flange 410 until they are located on both sides of the flange 410. Afterwards, the linkage disk 510 continues to rotate, so that the guide rod 362, the protrusion 361 and the second push rod 370 move along the coaxial sections of the guide hole 511, the first guide groove 512 and the second guide groove 513 respectively. The elastic piece inclined in the first guide groove 512 pushes the first push rod 360 to move so that the first sleeve 320 abuts against the flange 410. The depth of the coaxial section of the second guide groove 513 gradually increases, so that the second push rod 370 drives the second sleeve 330 to move and abut against the flange 410 under the action of the second elastic member 371, until the first sleeve 320 and the second sleeve 330 are respectively pressed against the flange 410, and the linkage disk 510 stops rotating. The output shaft of the second motor is locked after it is stopped, so that the rotation of the linkage disk 510 is locked.

[0035] Afterwards, the sliding turntable 220 moves to drive the drill rod 210 close to the flange 410. The drill rod 210 passes through the inner ring of the linkage plate 510 and the limit plate 520 and then extends into the first sleeve 320 through the filter cartridge 390. The drill rod 210 is started to rotate, and the first motor is started to drive the filter cartridge 390 to rotate. While the filter cartridge 390 rotates, the auger blade 381 is driven to rotate through the transmission assembly to transport the coolant in the liquid storage tank 380 to the outer cylinder 341. The coolant in the outer cylinder 341 flows into the valve core 342 through the gap between the conical valve port and the conical block, and then flows into the second sleeve 330 through the hose. The thicker the flange 410 is, the larger the gap between the conical valve port and the conical block is during the period when the drill rod 210 drills through the flange 410, and the more coolant flows into the second sleeve 330. When the drill rod 210 drills the flange 410, the chips generated are discharged into the filter cartridge 390 along the spiral guide groove on the drill rod 210, reducing chip splash. After drilling through the flange 410, the drill rod 210 directly enters the second sleeve 330. Because the second sleeve 330 abuts the other side of the flange 410, curling and burrs are less likely to form at the drilled hole, resulting in higher drilling quality. After drilling through the flange 410, the coolant in the second sleeve 330 flows from the drilled hole to the first sleeve 320 through the spiral guide groove on the drill rod 210, cooling the drill rod 210 while removing any remaining chips. Because the filter cartridge 390 is connected to the interior of the first sleeve 320, the coolant flowing into the first sleeve 320 enters the filter cartridge 390, is filtered by the filter cartridge 390, and then flows back to the liquid storage tank 380, ready for reuse during the next drilling operation. A one-way valve may also be provided in the hose or the connecting pipe 340 to prevent the coolant in the second envelope 330 from flowing back to the liquid storage tank 380 from the connecting pipe 340 or the hose.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A combined drilling device for a valve housing, used for drilling a flange of a valve housing, characterized in that: It includes a base and a drilling mechanism arranged on the base, a limiting mechanism and a supporting mechanism arranged on the limiting mechanism; The drilling mechanism includes a drill rod parallel to the flange axis, and the drill rod can rotate and move along its axial direction to drill a hole in the flange; The supporting mechanism includes a first sleeve, a second sleeve and a connecting pipe. The first sleeve and the second sleeve are both cylindrical structures and are coaxial and connected in an axial sliding manner. The first sleeve and the second sleeve are respectively located on both sides of the flange in the axial direction, and are close to each other under the action of the limiting mechanism until they are respectively in contact with the flange. After the drill rod passes through the first sleeve, it drills a hole in the flange and enters the second sleeve after drilling through the flange. The connecting pipe connects the first sleeve and the second sleeve, and is provided with a liquid channel inside to allow coolant to flow into the second sleeve. The connecting pipe makes the amount of coolant entering the second sleeve positively correlated with the thickness of the flange.

2. A combined drilling device for a valve housing according to claim 1, characterized in that: A filter cartridge is rotatably mounted on a side of the first sleeve away from the flange. The filter cartridge rotates in the same direction and at the same speed as the drill pipe to collect chips.

3. A combined drilling device for a valve housing according to claim 2, characterized in that: The connecting pipe includes an outer tube connected to the first sleeve and a valve core connected to the second sleeve, and one end of the outer tube is sleeved with one end of the valve core; when the drill rod is drilling, coolant is continuously introduced into the outer tube, and a conical valve port is provided in the outer tube; the interior of the valve core is hollow and connected to the interior of the second sleeve, and the valve core is sealed and slidably fitted with the inner wall of the outer tube, and the end of the valve core close to the outer tube is connected to a conical block adapted to the conical valve port, the greater the distance between the outer tube and the valve core, the greater the gap between the conical block and the conical valve port, and the more coolant enters the valve core.

4. A combined drilling device for a valve housing according to claim 3, characterized in that: The limiting mechanism includes a linkage disk and a limiting disk; the linkage disk is rotatably mounted on the base, and the rotation axis is parallel to the drill rod; a guide hole, a first guide groove and a second guide groove of the same shape and offset in sequence along the radial direction of the linkage disk are opened on the linkage disk, and the guide hole passes through the two side surfaces of the linkage disk, including a coaxial section and an offset section connected in sequence, the coaxial section is coaxial with the linkage disk, the offset section is inclined, and one end close to the coaxial section is located on the side close to the center of the linkage disk of the other end; the first guide groove and the second guide groove are opened on the same side of the linkage disk, and from the offset section to the coaxial section In the direction of the rotation of the linkage disk, the depth of the coaxial section of the first guide groove gradually decreases, and the depth of the coaxial section of the second guide groove gradually increases; the limiting plate is installed on the base and is located on the side of the linkage disk where the first guide groove is opened; the first sleeve is connected to the first push rod, and the second sleeve is connected to the second push rod; the first push rod and the second push rod both pass through the limiting plate, and the limiting plate limits the first push rod and the second push rod from rotating with the linkage disk; one end of the first push rod is provided with a protrusion abutting the first guide groove and a guide rod passing through the guide hole, and the second push rod slides with the first push rod and abuts the second guide groove.

5. The combined drilling device for a valve housing according to claim 4, characterized in that: A first elastic member is provided between the first push rod and the limiting plate, and the first elastic member prompts the protrusion to abut against the first guide groove; a second elastic member is provided between the first push rod and the second push rod, and the second elastic member prompts the second push rod to abut against the second guide groove.

6. The combined drilling device for a valve housing according to claim 5, characterized in that: An inclined spring piece is provided in the coaxial section of the first guide groove. The spring piece gradually reduces the depth of the coaxial section of the first guide groove and is used to abut against the protrusion of the first push rod.

7. The combined drilling device for a valve housing according to claim 3, characterized in that: A liquid storage tank is fixed on the first sleeve. The liquid storage tank is filled with coolant and is connected to the interior of the outer cylinder through a hose. When the filter cylinder rotates, the cylinder transmission assembly drives the coolant in the liquid storage tank to flow to the outer cylinder.

8. The combined drilling device for a valve housing according to claim 4, characterized in that: There are multiple drill rods and support mechanisms, which are distributed at intervals around the circumference of the linkage disk; the limit disk is coaxial with the linkage disk, and the limit disk can rotate synchronously with the linkage disk, thereby driving the support mechanism to rotate synchronously to change the clamping position of the first sleeve and the second sleeve on the flange, and the limit disk is locked with the base after rotation and adjustment.

9. The combined drilling device for a valve housing according to claim 4, characterized in that: The initial length of the first ejector rod is adjustable and locked after adjustment.

10. The combined drilling device for a valve housing according to claim 1, characterized in that: Sealing rings are provided on one end of the first sealing sleeve and the second sealing sleeve close to the flange, and the inner ring of the sealing ring does not go beyond the inner ring of the second sealing sleeve.

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