CN105840829A - Impact-rotary high-pressure sealing device - Google Patents
Impact-rotary high-pressure sealing device Download PDFInfo
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- CN105840829A CN105840829A CN201610219588.9A CN201610219588A CN105840829A CN 105840829 A CN105840829 A CN 105840829A CN 201610219588 A CN201610219588 A CN 201610219588A CN 105840829 A CN105840829 A CN 105840829A
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- sealing
- end cap
- reinforcing sleeve
- drum
- drill steel
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
Abstract
The invention discloses an impact-rotary high-pressure sealing device. The impact-rotary high-pressure sealing device comprises a sealing barrel (10), sealing sleeves (4), end covers (8), guide sleeves (6), outer end covers (7) and a drill rod component (11), wherein the two sealing sleeves, the two end covers, the two guide sleeves and the two outer end covers are arranged on the sealing barrel in a left and right symmetrical manner; the drill rod component is connected at the axial position of the sealing barrel in a penetration manner, and comprises a reinforcement sleeve (11-2) and a drill rod (11-3); the outer peripheries and the inner peripheries of the sealing sleeves and the end covers are separately provided with a sealing groove along the peripheral direction; each sealing groove is internally provided with a sealing ring I (1), a sealing ring II (2) and a sealing ring III (5); and the guide sleeves are arranged in guide sleeve positioning assembly grooves of the end covers. The impact-rotary high-pressure sealing device is compact in structure; a high-pressure working medium can be safely sealed in a sealing cavity without leakage, and thus the aims of maintaining normal high-pressure working conditions and lowering potential safety hazards are realized; and the impact-rotary high-pressure sealing device is applicable to high-pressure sealing at working conditions of gadders and well drills and other impact-rotary working conditions.
Description
Technical field
The present invention relates to a kind of sealing device, a kind of being applicable to is impacted the high pressure seal under rotational case, belongs to rock drill equipment technology field.
Background technology
Impact rotation mode is commonly used to digging and excavates in rock engineering, it is typically drill bit or bore bit to rotate and pierce while impinging earth strata, shock loading exceedes the breaking strength of rock, adds the effect shearing rock that upper rotary produces, and the effect of this impact rotation mode fractured rock significantly improves.
Impact drilling be broken in the master operation of hard above rock, extensively apply in excavation rock engineering in digging, as a example by rock drill, the energy of rock drill output passes to rock by drill steel and bore bit (drill rod), reach fractured rock and form the purpose in big gun hole, hydraulic gate is a kind of rock drill grown up on the basis of air drill in recent years, it is the one novel driving rock drilling equipment being used as power with highly pressurised liquid, is now widely used for the big cross section Work places in mine working and traffic tunnel driving.
Hydraulic gate is mainly by impact part (piston and cylinder body), control part (control valve), accumulator and connection duct composition, impact part and connection channel section are equipped with sealing device, sealing device is used to prevent working media from leaking from equipment or prevents introduced contaminants from invading a kind of device of device interior, wherein hydraulic gate connects the sealing device of the channel section normal high pressure operations to maintaining hydraulic gate, guarantee equipment and the safety of the person, prevent or reduce the consumption of material and the energy, the aspects such as the operating efficiency of raising equipment play vital effect.
There is leakage problem in the connection channel section of existing hydraulic gate, particularly High Rotation Speed and the most in varying degrees the most common with the Seepage of dynamic seal (packing) under rotary shaft axial displacement operating mode.
Summary of the invention
For the problems referred to above, the present invention provides a kind of impact rotary high pressure sealing device, compact conformation, it is possible to be sealed in annular seal space by high-pressure working medium safety non-leakage, and then realizes maintaining normal high pressure operations, the purpose of reduction potential safety hazard.
For achieving the above object, this impact rotary high pressure sealing device includes sealing drum, sealing shroud, end cap, fairlead, outer end cap and drill steel assembly；Sealing shroud, end cap, fairlead and outer end cap are all symmetrical set as two pieces；
Described drill steel assembly cross-under is at the shaft core position of sealing drum, drill steel assembly includes reinforcing sleeve and drill steel, drill steel is hollow structure, the reinforcing sleeve of cylindrical sleeve type is fixedly set on drill steel and seals between reinforcing sleeve with drill steel to install and is connected, the forward end seal of drill steel is provided with drill bit, back-end sealing is provided with water blocking, and the centre position on reinforcing sleeve and drill steel is radially provided with through hole；
Described sealing drum is symmetrical horizontal cylindrical structure, and the outer surface of the sealing drum of cylindrical structure is fixedly installed on base plate by gripper shoe, and base plate is fixedly mounted on before and after's guiding mechanism；The inner surface medium position of the sealing drum of cylindrical structure is provided with inwardly projecting positioning step；The position of the through hole of the medium position of sealing drum, corresponding reinforcing sleeve and drill steel is provided with water inlet；
Described sealing shroud is socketed on the reinforcing sleeve being arranged in sealing drum and inner face acts against on the positioning step of sealing drum, the internal diameter size of sealing shroud and the outside dimension matched in clearance of reinforcing sleeve, the outside dimension of sealing shroud and the internal diameter size matched in clearance of sealing drum, it is equipped with seal groove along the circumferential direction on the excircle of sealing shroud and inner periphery, the sealing ring I that the internal diameter size with sealing drum coordinates and the sealing ring II coordinated with the outside dimension of reinforcing sleeve are installed in seal groove；
Described end cap is the nested structure with location and installation step, on the reinforcing sleeve that socket is arranged in sealing drum, and inner face acts against on the outer face of sealing shroud, the internal diameter size of end cap nested structure and the outside dimension matched in clearance of reinforcing sleeve, the outside dimension of end cap nested structure and the internal diameter size matched in clearance of sealing drum, seal groove along the circumferential direction it is equipped with on the excircle of end cap nested structure and inner periphery, the sealing ring I that internal diameter size with sealing drum coordinates and the sealing ring III coordinated with the outside dimension of reinforcing sleeve are installed in seal groove, it is additionally provided with fairlead location and installation groove on the inner periphery position, outer face of end cap nested structure；
Described fairlead is socketed on the reinforcing sleeve being arranged in sealing drum and inner face acts against on the location end face of fairlead location and installation groove of end cap, the internal diameter size of fairlead coordinates with the outside dimension of reinforcing sleeve, and the outside dimension of fairlead coordinates with the internal diameter size of the fairlead location and installation groove of end cap；
Described outer end cap is to have on the nested structure of location and installation step, the reinforcing sleeve that is arranged in sealing drum of socket and inner face acts against on the outer face of fairlead, the installation step outer face laminating of the installation step inner face of outer end cap and end cap entirely through installing bolt location and installation outside the end of sealing drum on installed surface.
Scheme as a further improvement on the present invention, the position of the inner surface medium position correspondence reinforcing sleeve of described sealing drum and the through hole of drill steel is provided with the internal diameter size receiving chamber more than reinforcing sleeve outside dimension.
Scheme as a further improvement on the present invention, it is also equipped with water jacket inside described sealing drum, water jacket is arranged on the positioning step within sealing drum, and the outside dimension matched in clearance of the outside dimension of water jacket and the internal diameter size tight fit of positioning step sealing drum within, the internal diameter size of water jacket and drill steel assembly, water jacket left and right both ends of the surface protrude from the left and right both ends of the surface of the positioning step within sealing drum.
Scheme as a further improvement on the present invention, described sealing shroud is vehicle type sealing shroud, and the seal groove on the excircle of vehicle type sealing shroud and inner periphery is disposed as twice, described sealing ring I and sealing ring II is the most supporting is set to two pieces.
As one embodiment of the present invention, described sealing ring II is Combined sealing circle.
Preferred version as the present invention, the open type seal groove structure that the seal groove arranged on the inner periphery of described sealing shroud is provided in the inner circle both ends of the surface of sealing shroud, described Combined sealing circle one end acts against the inner face of open type seal groove, the other end and acts against respectively on water jacket and end cap.
Scheme as a further improvement on the present invention, the sealing ring III that described end cap coordinates with the outside dimension of reinforcing sleeve is lip-type packing.
Scheme as a further improvement on the present invention, arranges sealing gasket between installed surface outside the installation step inner face of described end cap and sealing drum end.
Scheme as a further improvement on the present invention, described sealing shroud is packing seal set, the seal groove that seal groove on the excircle of packing seal set and inner periphery is disposed as on twice and packing seal set inner periphery arranging is provided in the open type seal groove structure in the inner circle both ends of the surface of packing seal set, described sealing ring II one end acts against the inner face of open type seal groove, the other end and acts against on water jacket and end cap respectively, the described sealing ring II leaning water jacket is V-type packing seal, and the described sealing ring II leaning end cap is Combined sealing circle.
Scheme as a further improvement on the present invention, described fairlead is copper fairlead.
Compared with prior art, this impact rotary high pressure sealing device is equipped with sealing ring owing to being provided with on sealing shroud and end cap, sealing shroud and end cap at sealing drum two ends, therefore the water under high pressure in sealing drum can be formed dual sealing functions, and then ensure sealing effectiveness；Owing to being provided with, on the inner periphery position, outer face of sealing shroud, the fairlead that the outside dimension with reinforcing sleeve coordinates, the circular runout of drill steel assembly therefore can be limited；Owing to being provided with the internal diameter size receiving chamber more than reinforcing sleeve outside dimension in the position of the through hole of the inner surface medium position correspondence reinforcing sleeve of sealing drum and drill steel, water under high pressure therefore can be made to enter inside drill steel at the through hole of the reinforcing sleeve and drill steel that accommodate optional position in chamber；Owing to sealing ring II uses Combined sealing circle, therefore can effectively utilize O RunddichtringO self sealing action under fluid matasomatism, it is achieved better seal effect；The sealing under higher hydraulic condition can be realized when sealing shroud uses packing seal set；Impact rotary high pressure sealing device, compact conformation, high-pressure working medium can be sealed in annular seal space safety non-leakage, and then realize maintaining normal high pressure operations, the purpose of reduction potential safety hazard, it is adaptable to such as the high pressure sealing in the case of the impact rotary work such as rock drill, trepan.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of the present invention；
Fig. 2 is the P direction view of Fig. 1；
Fig. 3 is present invention structural representation when using packing seal to overlap；
Fig. 4 is the Q direction view of Fig. 3；
Fig. 5 is the configuration diagram of drill steel assembly of the present invention；
Fig. 6 be the present invention with hydraulic gate with the use of time configuration diagram.
In figure: 1, sealing ring I, 2, sealing ring II, 3, water jacket, 4, sealing shroud, 5, sealing ring III, 6, fairlead, 7, outer end cap, 8, end cap, 9, gripper shoe, 10, sealing drum, 11, drill steel assembly, 11-1, water blocking, 11-2, reinforcing sleeve, 11-3, drill steel, 11-4, drill bit, 12, base plate, 15, front and back guiding mechanism.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, this impact rotary high pressure sealing device includes sealing drum 10, sealing shroud 4, end cap 8, fairlead 6, outer end cap 7 and drill steel assembly 11；Sealing shroud 4, end cap 8, fairlead 6 and outer end cap 7 are disposed as two pieces, are left and right symmetrically arranged on sealing drum 10.
Described drill steel assembly 11 cross-under is at the shaft core position of sealing drum 10, as shown in Figure 5, drill steel assembly 11 includes reinforcing sleeve 11-2 and drill steel 11-3, drill steel 11-3 is hollow structure, the reinforcing sleeve 11-2 of cylindrical sleeve type is fixedly set on drill steel 11-3 and seals between reinforcing sleeve 11-2 with drill steel 11-3 to install and is connected, the forward end seal of drill steel 11-3 is provided with drill bit 11-4, back-end sealing is provided with water blocking 11-1, reinforcing sleeve 11-2 and drill steel 11-3 is positioned at the centre position within sealing drum 10 and is radially provided with through hole.
Described sealing drum 10 is symmetrical horizontal cylindrical structure, the outer surface of the sealing drum 10 of cylindrical structure is fixedly installed on base plate 12 by gripper shoe 9, as shown in Figure 6, base plate 12 is fixedly mounted on before and after's guiding mechanism 15, and it is movable on front and back's guiding mechanism 15 together that whole device can follow hydraulic gate；The inner surface medium position of the sealing drum 10 of cylindrical structure is provided with inwardly projecting positioning step；The medium position of sealing drum 10, the position of through hole of corresponding reinforcing sleeve 11-2 and drill steel 11-3 are provided with water inlet.
Described sealing shroud 4 is socketed on the reinforcing sleeve 11-2 being arranged in sealing drum 10 and inner face acts against on the positioning step of sealing drum 10, the internal diameter size of sealing shroud 4 and the outside dimension matched in clearance of reinforcing sleeve 11-2, the outside dimension of sealing shroud 4 and the internal diameter size matched in clearance of sealing drum 10, it is equipped with seal groove along the circumferential direction on the excircle of sealing shroud 4 and inner periphery, the sealing ring I 1 that the internal diameter size with sealing drum 10 coordinates and the sealing ring II 2 coordinated with the outside dimension of reinforcing sleeve 11-2 are installed in seal groove.
Described end cap 8 is the nested structure with location and installation step, on the reinforcing sleeve 11-2 that socket is arranged in sealing drum 10, and inner face acts against on the outer face of sealing shroud 4, the internal diameter size of end cap 8 nested structure and the outside dimension matched in clearance of reinforcing sleeve 11-2, the outside dimension of end cap 8 nested structure and the internal diameter size matched in clearance of sealing drum 10, it is equipped with seal groove along the circumferential direction on the excircle of end cap 8 nested structure and inner periphery, the sealing ring I 1 that internal diameter size with sealing drum 10 coordinates and the sealing ring III 5 coordinated with the outside dimension of reinforcing sleeve 11-2 are installed in seal groove, it is additionally provided with fairlead location and installation groove on the inner periphery position, outer face of end cap 8 nested structure.
Described fairlead 6 is socketed on the reinforcing sleeve 11-2 being arranged in sealing drum 10 and inner face acts against on the location end face of fairlead location and installation groove of end cap 8, the internal diameter size of fairlead 6 coordinates with the outside dimension of reinforcing sleeve 11-2, the outside dimension of fairlead 6 coordinates with the internal diameter size of the fairlead location and installation groove of end cap 8, and fairlead 6 can limit the circular runout of drill steel assembly 11.
Described outer end cap 7 be there is the nested structure of location and installation step, the reinforcing sleeve 11-2 that is arranged in sealing drum 10 of socket is upper and inner face acts against and realizes axially positioning fairlead 6 on the outer face of fairlead 6, the installation step outer face laminating of the installation step inner face of outer end cap 7 and end cap 8 entirely through installing bolt location and installation the end of sealing drum 10 outside on installed surface, can realize the compression to sealing shroud 4 by distance between installed surface outside the installation step inner face of regulation end cap 8 and sealing drum 10 end and position degree.
As a example by hydraulic gate, as shown in Figure 6, the drill steel 11-3 rear end of this impact rotary high pressure sealing device is installed with hydraulic gate and after being connected, i.e. becomes an entirety with hydraulic gate, and pressure duct one end connection high-pressure water, the other end are connected with the water inlet of sealing drum 10；During duty, hydraulic gate is movable drives whole device movable on front and back's guiding mechanism 15, simultaneously hydraulic gate drive drill steel 11-3 around its axial-rotation, and then make the drill bit 11-4 of drill steel 11-3 front end rock stratum is carried out impact carry out rotary shear；Simultaneously, the water inlet locations of water under high pressure self-sealing cylinder 10 enters the inside of sealing drum 10, due under the collaborative sealing function of sealing shroud 4 and end cap 8, in water under high pressure is sealed in sealing drum 10 and spouting in the impact opening on drill bit 11-4 of the inside of drill steel 11-3 hollow, and then realize rock stratum carrying out further erosion in the course of the work, accelerating crushing rock formation.
Enter inside drill steel 11-3 to realize the through hole of the smooth reinforced set 11-2 and drill steel 11-3 of water under high pressure, scheme as a further improvement on the present invention, the position of the through hole of the inner surface medium position correspondence reinforcing sleeve 11-2 and drill steel 11-3 of described sealing drum 10 is provided with the internal diameter size receiving chamber more than reinforcing sleeve 11-2 outside dimension, and the water inlet of water under high pressure first sealed cylinder 10 is full of and accommodates chamber, again inside the through hole entrance drill steel 11-3 of the reinforcing sleeve 11-2 and drill steel 11-3 of optional position.
The sealing drum 10 of described cylindrical structure generally uses foundry goods or forging, larger-size positioning step is set and compares waste material, therefore to saving material, reduce cost, scheme as a further improvement on the present invention, described sealing drum 10 is internal is also equipped with water jacket 3, water jacket 3 is arranged on the positioning step within sealing drum 10, and the internal diameter size tight fit of the outside dimension of water jacket 3 and positioning step within sealing drum 10, the internal diameter size of water jacket 3 and the outside dimension matched in clearance of drill steel assembly 11, water jacket about 3 both ends of the surface protrude from the left and right both ends of the surface of the positioning step within sealing drum 10；The water jacket 3 being separately provided processing can reduce the processing dimension of sealing drum 10 positioning step, and then realizes cost-effective purpose.
In order to increase sealing effectiveness further, scheme as a further improvement on the present invention, described sealing shroud 4 is vehicle type sealing shroud, and the seal groove on the excircle of vehicle type sealing shroud and inner periphery is disposed as twice, described sealing ring I 1 and sealing ring II 2 is the most supporting is set to two pieces.
Owing to Combined sealing circle can effectively utilize O RunddichtringO self sealing action under fluid matasomatism, therefore to be further ensured that the sealing effectiveness of sealing shroud 4, as one embodiment of the present invention, described sealing ring II 2 is Combined sealing circle.
Combined sealing circle uses the sealing effectiveness of open type seal groove more preferable when bar footpath size is not more than 70mm, owing to the outside dimension of reinforcing sleeve 11-2 is generally not more than 70mm, therefore open type seal groove is preferably employed, i.e., preferred version as the present invention, the open type seal groove structure that the seal groove arranged on the inner periphery of described sealing shroud 4 is provided in the inner circle both ends of the surface of sealing shroud 4, described Combined sealing circle one end acts against the inner face of open type seal groove, the other end and acts against respectively on water jacket 3 and end cap 8.
In order to increase sealing effectiveness, as a further improvement on the present invention scheme further, the sealing ring III 5 that described end cap 8 coordinates with the outside dimension of reinforcing sleeve 11-2 is lip-type packing.
In order to increase sealing effectiveness further, prevent outside the water under high pressure installation step inner face from end cap 8 and sealing drum 10 end seepage between installed surface, scheme as a further improvement on the present invention, arranges sealing gasket between installed surface outside the installation step inner face of described end cap 8 and sealing drum 10 end.
In order to strengthen the scope of application, this impact rotary high pressure sealing device is made to be applicable to the occasion of higher hydraulic pressure, scheme as a further improvement on the present invention, such as Fig. 3, shown in Fig. 4, described sealing shroud 4 is packing seal set, seal groove on the excircle of packing seal set and inner periphery is disposed as twice, and the seal groove arranged on packing seal set inner periphery is provided in the open type seal groove structure in the inner circle both ends of the surface of packing seal set, described sealing ring II 2 one end acts against the inner face of open type seal groove, the other end acts against on water jacket 3 and end cap 8 respectively, the described sealing ring II 2 leaning water jacket 3 is V-type packing seal, the described sealing ring II 2 leaning end cap 8 is Combined sealing circle.
In order to ensure guide effect and increase wearability, scheme as a further improvement on the present invention, described fairlead 6 is copper fairlead.
This impact rotary high pressure sealing device is equipped with sealing ring owing to being provided with on sealing shroud 4 and end cap 8, sealing shroud 4 and end cap 8 at sealing drum 10 two ends, therefore the water under high pressure in sealing drum 10 can be formed dual sealing functions, and then ensure sealing effectiveness；Owing to being provided with the fairlead 6 that the outside dimension with reinforcing sleeve 11-2 coordinates on the inner periphery position, outer face of sealing shroud 4, the circular runout of drill steel assembly 11 therefore can be limited；Owing to being provided with the internal diameter size receiving chamber more than reinforcing sleeve 11-2 outside dimension in the position of the through hole of the inner surface medium position correspondence reinforcing sleeve 11-2 and drill steel 11-3 of sealing drum 10, therefore can make water under high pressure inside the through hole entrance drill steel 11-3 accommodating the reinforcing sleeve 11-2 and drill steel 11-3 of optional position in chamber；Owing to sealing ring II 2 uses Combined sealing circle, therefore can effectively utilize O RunddichtringO self sealing action under fluid matasomatism, it is achieved better seal effect；The sealing under higher hydraulic condition can be realized when sealing shroud 4 uses packing seal to overlap；Impact rotary high pressure sealing device, compact conformation, high-pressure working medium can be sealed in annular seal space safety non-leakage, and then realize maintaining normal high pressure operations, the purpose of reduction potential safety hazard, it is adaptable to such as the high pressure sealing in the case of the impact rotary work such as rock drill, trepan.
Claims (10)
1. an impact rotary high pressure sealing device, it is characterised in that include sealing drum (10), sealing shroud (4), end cap (8), fairlead (6), outer end cap (7) and drill steel assembly (11)；Sealing shroud (4), end cap (8), fairlead (6) and outer end cap (7) are all symmetrical set as two pieces；
Described drill steel assembly (11) cross-under shaft core position in sealing drum (10), drill steel assembly (11) includes reinforcing sleeve (11-2) and drill steel (11-3), drill steel (11-3) is hollow structure, the reinforcing sleeve (11-2) of cylindrical sleeve type is fixedly set on drill steel (11-3) and seals between reinforcing sleeve (11-2) with drill steel (11-3) to install and is connected, the forward end seal of drill steel (11-3) is provided with drill bit (11-4), back-end sealing is provided with water blocking (11-1), and the centre position on reinforcing sleeve (11-2) and drill steel (11-3) is radially provided with through hole；
Described sealing drum (10) is symmetrical horizontal cylindrical structure, and the outer surface of the sealing drum (10) of cylindrical structure is fixedly installed on base plate (12) by gripper shoe (9), and base plate (12) is fixedly mounted on before and after's guiding mechanism (15)；The inner surface medium position of the sealing drum (10) of cylindrical structure is provided with inwardly projecting positioning step；The position of the through hole of the medium position of sealing drum (10), corresponding reinforcing sleeve (11-2) and drill steel (11-3) is provided with water inlet；
On the reinforcing sleeve (11-2) that described sealing shroud (4) socket is arranged in sealing drum (10), and inner face acts against on the positioning step of sealing drum (10), the internal diameter size of sealing shroud (4) and the outside dimension matched in clearance of reinforcing sleeve (11-2), the outside dimension of sealing shroud (4) and the internal diameter size matched in clearance of sealing drum (10), it is equipped with seal groove along the circumferential direction on the excircle of sealing shroud (4) and inner periphery, the sealing ring I (1) that internal diameter size with sealing drum (10) coordinates and the sealing ring II (2) coordinated with the outside dimension of reinforcing sleeve (11-2) are installed in seal groove；
Described end cap (8) is the nested structure with location and installation step, on the reinforcing sleeve (11-2) that socket is arranged in sealing drum (10), and inner face acts against on the outer face of sealing shroud (4), the internal diameter size of end cap (8) nested structure and the outside dimension matched in clearance of reinforcing sleeve (11-2), the outside dimension of end cap (8) nested structure and the internal diameter size matched in clearance of sealing drum (10), it is equipped with seal groove along the circumferential direction on the excircle of end cap (8) nested structure and inner periphery, the sealing ring I (1) that internal diameter size with sealing drum (10) coordinates and the sealing ring III (5) coordinated with the outside dimension of reinforcing sleeve (11-2) are installed in seal groove, it is additionally provided with fairlead location and installation groove on the inner periphery position, outer face of end cap (8) nested structure；
The reinforcing sleeve (11-2) that described fairlead (6) socket is arranged in sealing drum (10) is upper and inner face acts against on the location end face of fairlead location and installation groove of end cap (8), the internal diameter size of fairlead (6) coordinates with the outside dimension of reinforcing sleeve (11-2), and the outside dimension of fairlead (6) coordinates with the internal diameter size of the fairlead location and installation groove of end cap (8)；
Described outer end cap (7) be there is the nested structure of location and installation step, the reinforcing sleeve (11-2) that is arranged in sealing drum (10) of socket is upper and inner face acts against on the outer face of fairlead (6), the installation step outer face laminating of the installation step inner face of outer end cap (7) and end cap (8) entirely through installing bolt location and installation outside the end of sealing drum (10) on installed surface.
Impact rotary high pressure sealing device the most according to claim 1, it is characterized in that, the position of inner surface medium position correspondence reinforcing sleeve (11-2) of described sealing drum (10) and the through hole of drill steel (11-3) is provided with the internal diameter size receiving chamber more than reinforcing sleeve (11-2) outside dimension.
Impact rotary high pressure sealing device the most according to claim 1 and 2, it is characterized in that, described sealing drum (10) is internal is also equipped with water jacket (3), water jacket (3) is arranged on the positioning step that sealing drum (10) is internal, and the internal diameter size tight fit of positioning step, the internal diameter size of water jacket (3) and the outside dimension matched in clearance of drill steel assembly (11) that the outside dimension of water jacket (3) is internal with sealing drum (10), water jacket (3) left and right both ends of the surface protrude from the left and right both ends of the surface of the internal positioning step of sealing drum (10).
Impact rotary high pressure sealing device the most according to claim 3, it is characterized in that, described sealing shroud (4) is vehicle type sealing shroud, seal groove on the excircle of vehicle type sealing shroud and inner periphery is disposed as twice, described sealing ring I (1) and sealing ring II (2) is the most supporting is set to two pieces.
Impact rotary high pressure sealing device the most according to claim 4, it is characterised in that described sealing ring II (2) is Combined sealing circle.
Impact rotary high pressure sealing device the most according to claim 5, it is characterized in that, the seal groove arranged on the inner periphery of described sealing shroud (4) is provided in the open type seal groove structure in the inner circle both ends of the surface of sealing shroud (4), and described Combined sealing circle one end acts against the inner face of open type seal groove, the other end and acts against respectively on water jacket (3) and end cap (8).
Impact rotary high pressure sealing device the most according to claim 4, it is characterised in that the upper sealing ring III (5) coordinated with the outside dimension of reinforcing sleeve (11-2) of described end cap (8) is lip-type packing.
Impact rotary high pressure sealing device the most according to claim 1 and 2, it is characterised in that outside the installation step inner face of described end cap (8) and sealing drum (10) end, between installed surface, sealing gasket is set.
Impact rotary high pressure sealing device the most according to claim 3, it is characterized in that, described sealing shroud (4) is packing seal set, seal groove on the excircle of packing seal set and inner periphery is disposed as twice, and the seal groove arranged on packing seal set inner periphery is provided in the open type seal groove structure in the inner circle both ends of the surface of packing seal set, described sealing ring II (2) one end acts against the inner face of open type seal groove, the other end acts against on water jacket (3) and end cap (8) respectively, the described sealing ring II (2) leaning water jacket (3) is V-type packing seal, the described sealing ring II (2) leaning end cap (8) is Combined sealing circle.
Impact rotary high pressure sealing device the most according to claim 1 and 2, it is characterised in that described fairlead (6) is copper fairlead.
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| CN201610219588.9A CN105840829B (en) | 2016-04-11 | 2016-04-11 | One kind impact rotary high pressure sealing device |
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| CN201610219588.9A CN105840829B (en) | 2016-04-11 | 2016-04-11 | One kind impact rotary high pressure sealing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963651A (en) * | 2015-07-29 | 2015-10-07 | 中铁工程装备集团有限公司 | Novel gushing-prevention device for small-sized orifice |
| CN108999838A (en) * | 2018-10-17 | 2018-12-14 | 北京因时机器人科技有限公司 | A kind of driver and its driver push rod |
| CN112360481A (en) * | 2020-11-09 | 2021-02-12 | 中国铁建重工集团股份有限公司 | Rock breaking equipment and impact device thereof |
| CN114109429A (en) * | 2021-11-11 | 2022-03-01 | 山东大学 | Water jet assisted rock breaking system for rock drilling jumbo and working method of water jet assisted rock breaking system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104963651A (en) * | 2015-07-29 | 2015-10-07 | 中铁工程装备集团有限公司 | Novel gushing-prevention device for small-sized orifice |
| CN108999838A (en) * | 2018-10-17 | 2018-12-14 | 北京因时机器人科技有限公司 | A kind of driver and its driver push rod |
| CN108999838B (en) * | 2018-10-17 | 2024-02-27 | 北京因时机器人科技有限公司 | Driver and driver push rod thereof |
| CN112360481A (en) * | 2020-11-09 | 2021-02-12 | 中国铁建重工集团股份有限公司 | Rock breaking equipment and impact device thereof |
| CN114109429A (en) * | 2021-11-11 | 2022-03-01 | 山东大学 | Water jet assisted rock breaking system for rock drilling jumbo and working method of water jet assisted rock breaking system |
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