CN213054109U - Portable high-low side valve grinding machine - Google Patents
Portable high-low side valve grinding machine Download PDFInfo
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- CN213054109U CN213054109U CN202022003924.0U CN202022003924U CN213054109U CN 213054109 U CN213054109 U CN 213054109U CN 202022003924 U CN202022003924 U CN 202022003924U CN 213054109 U CN213054109 U CN 213054109U
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Abstract
The utility model relates to a grinder technical field specifically discloses a portable high low side valve grinds machine, include: the grinding device comprises a driving mechanism, a transmission mechanism, a fixed seat, a grinding rod, a grinding disc, a grinding pressure adjusting mechanism, a hollow shaft mounting seat and a grinding disc positioning and clamping mechanism; the hollow shaft is arranged in the hollow shaft mounting seat through a bearing capable of bearing axial force, and the hollow shaft mounting seat is arranged on the fixed seat; the grinding rod is arranged in the hollow core shaft, and the lower part of the grinding rod is sequentially connected with the grinding disc and the grinding disc positioning and clamping mechanism; the upper part and the middle part of the grinding rod are both provided with a connecting structure connected with the grinding pressure adjusting mechanism. The utility model discloses not only can satisfy the requirement of increase grinding pressure, can also reduce grinding pressure to can be applicable to the great valve grinding of disk seats such as low other valve, prevent that sealed face transition from grinding, also avoided grinding the technical problem that the motor that pressure caused greatly bore the too big damage motor of load simultaneously.
Description
Technical Field
The utility model relates to a grinder technical field mainly is applicable to and grinds high, low side valve gate valve seat.
Background
The high/low bypass valve is an important device of a bypass system of a steam turbine of a power plant. In the operation process, the high/low side valve bears the pressure and temperature of main/re-steam, and the sealing surface of the valve core and the valve seat is easily blown or slag is easily entrained. Therefore, the tightness of the sealing surface is an important guarantee for the economy and safety of the unit. To prevent leakage of the high/low side valves during operation, the grinding seats need to be overhauled on site and must be achieved with high grinding precision. Compared with other valve structures, the high/low side valve is higher in installation height, the valve seat of the low side valve is larger, and the size and the weight of the used grinding disc are also larger. The current common method of inspection relies on long trained professionals operating portable and bench grinders.
Although the existing portable grinder can grind a high/low side valve, the use effect is poor, the radial positioning operation of a grinding disc is complicated, grinding abrasive paper is easy to fall off, and a driving motor is easy to overload or the sealing surface is excessively ground. The desk type valve grinder occupies a large area and is expensive.
The utility model discloses a current utility model patent with application number CN02200180.8 provides a portable electronic stop valve grinds machine, mainly comprises transmission host computer, afterburning clamping positioner, abrasive disc subassembly triplex. This machine of grinding can only increase grinding pressure, can not reduce, when using this to grind the great valve of disk seats such as low other valve, grinding pressure can be great, and the motor bears the load too big, can cause sealed face excessively to grind and the motor damages the result. In addition, the radial positioning operation of the forcing clamping positioning device of the grinding machine is complicated.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a portable high low side valve grinds machine, the utility model discloses the requirement of pressure can not only be satisfied in the increase of the mill pressure adjustment mechanism that adopts, can also realize reducing the pressure to the disk seat abrasive surface. When the grinding pressure adjusting mechanism is arranged in the middle of the grinding rod, the grinding pressure can be increased through adjustment; when grinding pressure adjustment mechanism sets up in grinding pole upper portion, through adjusting, can realize passing through the dabber with grinding pole, abrasive disc positioning and clamping mechanism's part dead weight, bearing that can bear the axial force, dabber mount pad, the fixing base transmits for the valve terminal surface to alleviate the pressure at this device to grinding position, can be applicable to the great valve grinding of disk seats such as low by-pass valve, prevent that sealed face transition from grinding, also avoided grinding the technical problem that the motor that pressure caused greatly bears the too big damage motor of load simultaneously.
The utility model provides a portable high-low side valve grinds machine, include: the grinding device comprises a driving mechanism, a transmission mechanism, a fixed seat, a grinding rod and a grinding disc; further comprising: the grinding pressure adjusting mechanism, the hollow shaft mounting seat and the grinding disc positioning and clamping mechanism are arranged on the grinding plate;
the fixed seat is provided with an interface connected with the valve end face mounting hole, and the central position of the fixed seat is provided with a through hole penetrating through the upper end face and the lower end face of the fixed seat;
the hollow shaft is arranged in the hollow shaft mounting seat through a bearing capable of bearing axial force, and the hollow shaft mounting seat is arranged on the fixed seat;
the actuating end of the driving mechanism is connected with the hollow shaft through the transmission mechanism;
the hollow shaft is of a hollow structure, the grinding rod is arranged in the hollow structure of the hollow shaft, and the lower part of the grinding rod penetrates through the through hole in the fixed seat and is sequentially connected with the grinding disc and the grinding disc positioning and clamping mechanism;
the grinding rod is connected with the hollow shaft through a transmission structure;
the upper part and the middle part of the grinding rod are provided with connecting structures connected with the grinding pressure adjusting mechanism;
when the pressure adjusting mechanism is arranged in the middle of the grinding rod, the actuating end of the pressure adjusting mechanism is in contact with one side of the fixed seat facing the grinding disc; when the pressure adjusting mechanism is arranged on the upper part of the grinding rod, the actuating end of the pressure adjusting mechanism is contacted with the upper end surface of the hollow shaft.
The optimized technical scheme of the base structure is that the outer side wall of the grinding disc positioning and clamping mechanism is in clearance fit with the inner side wall of the valve seat; grinding disk positioning and clamping mechanism includes: the device comprises a pressing disc, a first ball bearing, a centering disc and a locking bolt;
the lower end of the grinding rod is provided with a bolt hole;
the pressing disc is of a combined structure of two cylinders which are large in upper part and small in lower part and are coaxially arranged, and a locking bolt mounting hole is formed in the center of the pressing disc;
the centering disc is of a cylindrical structure, the outer diameter of the centering disc is consistent with that of the pressing disc, and the height of the centering disc is higher than that of a small cylinder on the pressing disc;
the ball bearing is arranged between the inner wall of the centering disc and the outer wall of the small cylinder at the lower part of the pressing disc, the inner ring of the first ball bearing is matched with the pressing disc, and the centering disc is matched with the outer ring of the first ball bearing;
the locking bolt is connected with the bolt hole at the lower end of the grinding rod through the locking bolt mounting hole on the pressing disc in a locking mode.
The technical scheme for further optimizing the structure is that a conical concave surface is formed in the upper portion of the pressing disc, and the taper of the conical concave surface is smaller than that of the working surface of the grinding disc.
Still further preferred technical scheme is, the fixing base includes: a positioning plate and a straight arm;
the length of the straight arm is larger than the outer diameter of the positioning disc, the positioning disc is coaxially arranged on the straight arm, and the interfaces connected with the valve end face mounting holes are arranged on two end parts of the straight arm, which exceed the positioning disc;
the side at positioning disk place is the one side towards the valve disk seat, positioning disk lateral wall and valve disk seat inside wall clearance fit.
Still further preferably, the grinding pressure adjusting mechanism includes: a spring and an adjusting block;
the upper part and the middle part of the grinding rod are provided with connecting structures which are connected with the grinding pressure adjusting mechanism and respectively comprise: the first thread structure is positioned at the upper part of the grinding rod, and the second thread structure is positioned in the middle of the grinding rod;
the adjusting block is provided with a threaded through hole;
when the adjusting block is arranged on the second threaded structure in the middle of the grinding rod through the threaded through hole, the upper part of the spring is in contact with the bottom surface of the positioning disc; when the adjusting block is arranged on the first threaded structure on the upper portion of the grinding rod through the threaded through hole, the lower portion of the spring is in contact with the upper end face of the hollow shaft.
Still further preferred technical scheme is that the upper end of the grinding rod is provided with a groove with an inner hexagonal structure.
Still further preferably, the adjusting block in the grinding pressure adjusting mechanism includes: the first adjusting block and the second adjusting block;
the first adjusting block is arranged on the first thread structure on the grinding rod;
the second adjusting block is arranged on the second threaded structure of the grinding rod.
The technical scheme for improving the scheme is that the grinding rod is provided with length scales.
Still further, according to a preferable technical scheme, the hollow shaft mounting seat is a reduction box;
the bearing capable of bearing axial force comprises: a first bearing and a second bearing; at least one of the first bearing and the second bearing is a thrust bearing;
the top and the bottom of the reduction gearbox are symmetrically provided with hollow shaft mounting holes, and one side of the reduction gearbox is provided with a driving mechanism mounting port;
the upper end of the hollow shaft is connected with the top of the reduction gearbox through a first bearing, and the lower end of the hollow shaft is connected with the bottom of the reduction gearbox through a second bearing;
the driving mechanism is connected with a driving mechanism mounting port of the reduction gearbox;
the transmission mechanism includes: the driving solid core shaft, the second ball bearing, the rotary bevel gear A and the rotary bevel gear B; the rotary bevel gear A and the rotary bevel gear B are meshed with each other, the driving solid core shaft and the hollow core shaft are vertically arranged, and the driving solid core shaft is connected with a power output end of the driving mechanism.
More preferred technical scheme does, set up in grind the pole with between the hollow axle the transmission structure includes: flat keys, key slots;
the grinding rod is characterized in that a key groove formed in the outer wall of the grinding rod along the length direction of the grinding rod is arranged, a flat key is arranged on the inner wall of the hollow mandrel, the grinding rod is arranged in the hollow mandrel, and the flat key is located in the key groove.
The beneficial effects of the utility model reside in that:
1. the utility model provides a mill can not only satisfy the requirement of increase grinding pressure through setting up grinding pressure adjustment mechanism on grinding rod upper portion, middle part, can also realize shifting this device to the partial pressure of disk seat abrasive surface to the valve end face mounting hole to when grinding the great valve of disk seats such as low other valve, can prevent sealed face transition grinding, also avoided grinding the technical problem that the motor that pressure caused greatly bore the too big damage motor of load simultaneously.
2. The utility model discloses the abrasive disc positioning and clamping mechanism who adopts utilizes the locking bolt to lock abrasive paper through closing disk and abrasive disc, and abrasive paper is difficult for droing, on the basis that compresses tightly abrasive paper, through ball bearing installation centering dish to the realization does not take place frictional purpose with valve disk seat inner circle, thereby guarantees the positioning function of centering dish to the grinding disc, realizes the radial accurate location of abrasive disc, improves and grinds the precision.
3. Be provided with the positioning disk with disk seat inner wall clearance fit on the fixing base for this device easily assembles the counterpoint.
4. As the grinding pressure adjusting mechanism of the device, the grinding pressure adjusting mechanism has the advantages of simple structure, easiness in manufacturing and operation, capability of setting the adjusting block and the spring in the middle or the upper part of the grinding rod to reduce components according to the grinding pressure requirement, and capability of setting the adjusting block in the middle and the upper part of the grinding rod respectively to save the step of position conversion of the adjusting block.
5. The utility model discloses a portable grinding machine, simple structure, low in manufacturing cost, easily installation and maintenance, easy operation are suitable for popularization and application.
Drawings
Fig. 1 is a schematic structural view of the grinding pressure adjusting mechanism of the embodiment of the present invention acting on the upper portion of the grinding rod.
Fig. 2 is a schematic structural view of the grinding pressure adjusting mechanism of the embodiment of the present invention acting on the middle of the grinding rod.
Fig. 3 is a schematic structural view of the embodiment of the present invention using the reduction box as the hollow shaft mounting seat.
Fig. 4 is a schematic view of a grinding rod structure adopted in the embodiment of the present invention.
Fig. 5 is a schematic top-side view of the structure shown in fig. 4.
Fig. 6 is a schematic view of a fixing base structure adopted in the embodiment of the present invention.
Fig. 7 is a schematic top view of the structure shown in fig. 6.
Fig. 8 is a schematic structural view of a positioning and clamping mechanism for an abrasive disk used in an embodiment of the present invention.
Wherein, 1-pistol drill, 2-reduction box, 2.1-driving solid mandrel, 2.1.1-second ball bearing, 2.1.2-rotary bevel gear A, 2.2-hollow mandrel, 2.2.1-first bearing, 2.2.2-second bearing, 2.2.3-rotary bevel gear B, 2.2.4-flat key, 2.3-driving mechanism mounting port, 3-fixed seat, 3.1-positioning disk, 3.2-straight arm, 3.2.1-bolt adjusting groove, 3.2.2-bolt, 4-grinding rod, 4.1-double key, 4.2-second thread structure, 4.3-second adjusting block, 4.4-key groove, 4.5-first thread structure, 4.6-groove of inner hexagonal structure, 5-grinding disk, 6-grinding disk positioning and clamping mechanism, 6.1-pressing disk, 6.2-first ball bearing, 6.2.1-locking snap ring, 6.2-annular gland, 6.3-centering plate, 6.4-locking bolt, 7-spring, 8-first regulating block.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the objectives of the present invention, the following detailed description will be made in conjunction with the accompanying drawings and preferred embodiments for the specific implementation and working principle of the portable high-low side valve grinder according to the present invention.
The utility model provides a portable high low side valve grinds machine, its basic scheme includes: actuating mechanism, drive mechanism, fixing base 3, grinding rod 4, abrasive disc 5, grinding pressure adjustment mechanism, hollow shaft 2.2, hollow shaft mount pad, abrasive disc positioning and clamping mechanism 6. Wherein, be provided with the interface of being connected with valve end face mounting hole on the fixing base 3, the through-hole that runs through both ends face about the fixing base 3 is seted up to 3 central point departments of fixing base for place grinding miller pole 4. The hollow shaft 2.2 is arranged in the hollow shaft mounting seat through a bearing capable of bearing axial force, and the hollow shaft mounting seat is arranged on the fixed seat 3. Actuating mechanism's execution end is connected with hollow shaft 2.2 through drive mechanism, and hollow shaft 2.2 is hollow structure, grinds pole 4 and sets up in hollow structure of hollow shaft 2.2, grinds 4 lower part and is connected with abrasive disc 5, abrasive disc positioning and clamping mechanism 6 order after the through-hole on fixing base 3 is worn out, grinds and is connected through drive structure between pole 4 and the hollow shaft 2.2. The upper part and the middle part of the grinding rod 4 are both provided with a connecting structure connected with the grinding pressure adjusting mechanism. When the pressure adjusting mechanism is arranged in the middle of the grinding rod 4, the actuating end of the pressure adjusting mechanism is contacted with one side of the fixed seat 3 facing the grinding disc 5; when the pressure adjusting mechanism is arranged on the upper part of the grinding rod 4, the actuating end of the pressure adjusting mechanism is contacted with the upper end surface of the hollow shaft 2.2.
As shown in fig. 1 and 2, in the present embodiment, the reduction box 2 shown in fig. 3 is used as the hollow shaft mount. The reduction gearbox 2 is of a square structure and is fixedly connected to the fixing seat 3 through screws, hollow shaft mounting holes are symmetrically formed in the top and the bottom of the reduction gearbox 2, and a driving mechanism mounting opening 2.3 is formed in one side of the reduction gearbox 2.
The hollow shaft 2.2 and the hollow shaft mounting seat are connected in the following mode: the upper end of the hollow shaft 2.2 is connected with the top of the reduction gearbox 2 through a first bearing 2.2.1, the lower end of the hollow shaft 2.2 is connected with the bottom of the reduction gearbox 2 through a second bearing 2.2.2, and at least one of the first bearing 2.2.1 and the second bearing 2.2.2 adopts a thrust bearing to bear axial force.
As for the transmission mechanism, the transmission mechanism in the present embodiment, as shown in fig. 1 and 2, includes: a driving solid shaft 2.1, a second ball bearing 2.1.1, a rotary bevel gear A2.1.2 and a rotary bevel gear B2.2.3. In this embodiment, the pistol drill 1 is used as the drive mechanism.
The second ball bearing 2.1.1 and the rotary bevel gear A2.1.2 are arranged on the driving solid core shaft 2.1, the rotary bevel gear B2.2.3 is arranged on the hollow core shaft 2.2, the rotary bevel gear A2.1.2 and the rotary bevel gear B2.2.3 are meshed and matched with each other, and the driving solid core shaft 2.1 and the hollow core shaft 2.2 are vertically arranged. One end of the driving solid core shaft 2.1, which is far away from the hollow core shaft 2.2, is connected with the power output end of the pistol drill 1, which is arranged on the reduction gearbox 2 through the driving mechanism mounting port 2.3. Two end parts of the hollow shaft 2.2 are parallel and level with the upper end and the lower end of the reduction gearbox 2. Hollow shaft 2.2 is inside hollow structure, and the inner wall is equipped with the parallel key mounting groove, and parallel key 2.2.4 utilizes screw fixed mounting in the parallel key mounting groove.
As shown in fig. 6 and 7, the fixing base 3 in this embodiment includes: positioning plate 3.1, straight arm 3.2. Wherein, the length of straight arm 3.2 is greater than the external diameter of positioning disk 3.1, and positioning disk 3.1 sets up on straight arm 3.2 coaxially, and the side at positioning disk 3.1 place is the one side towards the valve disk seat. The through hole that the center of positioning disk 3.1 and straight arm 3.2 was seted up for fixing base 3 central point department sets up the through hole that runs through fixing base 3 upper and lower both ends face, supplies grinding rod 4 to pass.
The outer diameter of the positioning disc 3.1 is manufactured according to the contour dimension of the valve seat of the high/low side valve, so that the outer side wall of the positioning disc 3.1 is in clearance fit with the inner side wall of the valve seat.
The two ends of the straight arm 3.2 are provided with bolt adjusting grooves 3.2.1, and the bolt adjusting grooves 3.2.1 are interfaces connected with the valve end face mounting holes. The fixing seat 3 can be stably fixed on the valve by utilizing the bolt 3.2.2 to be connected with the bolt hole on the end surface of the high/low side valve through the bolt adjusting groove 3.2.1.
As shown in fig. 1 and 2, the grinding pressure adjusting mechanism used in the present embodiment includes: spring 7, regulating block. The regulating block includes: the first adjusting block 8 and the second adjusting block 4.3 are used for saving the operation steps of switching the adjusting blocks between the upper part and the middle part of the grinding rod 4 during pressure adjustment. Threaded through holes are formed in the first adjusting block 8 and the second adjusting block 4.3, and the outer ring of the first adjusting block 8 and the symmetrical machining plane of the second adjusting block 4.3 are convenient to operate the adjusting blocks through a wrench.
As shown in fig. 4 and 5, the head end of the grinding rod 4 used in this embodiment is provided with a groove 4.6 having an inner hexagonal structure, so that the grinding rod 4 can be conveniently fixed by an inner hexagonal wrench when the pressure is adjusted. The upper part of the grinding rod 4 is provided with a key groove 4.4 and a first thread structure 4.5. The grinding rod 4 is matched with a flat key 2.2.4 in the hollow shaft 2.2 through a key groove 4.4 to transmit the rotating speed. The grinding rod 4 is connected with the first adjusting block 8 through a first thread structure 4.5 in a matching mode. The length scales are arranged in the key grooves 4.4 on the grinding rod 4. The middle part of the grinding rod 4 is provided with a second thread structure 4.2, a second adjusting block 4.3 and a second thread structure 4.2 which are matched and connected. The lower end of the grinding rod 4 is of a double-key 4.1 structure, the grinding rod 4 is connected with the grinding disc 5 through a double key 4.1, and a bolt hole is formed in the bottom of the grinding rod 4.
When grinding pressure needs to be increased, the spring 7 is arranged between the second adjusting block 4.3 and the positioning disc 3.1, the upper portion of the spring 7 is in contact with the bottom surface of the positioning disc 3.1, and downward pressure of the grinding rod 4 is increased by adjusting the second adjusting block 4.3 upwards. When needs reduce grinding pressure, set up spring 7 between 2 tops of first regulating block 8 and reducing gear box, the bottom of spring 7 and the contact of 2.2 up end of hollow shaft, through adjusting first regulating block 8 downwards, will grind pole 4, abrasive disc 5, the partial dead weight of abrasive disc positioning and clamping mechanism 6 transmits for the valve terminal surface through hollow shaft 2.2, bearing, hollow shaft mount pad, fixing base 3 that can bear the axial force to alleviate the pressure of this device to grinding the position.
As shown in fig. 8, the abrasive disk positioning and clamping mechanism 6 employed in the present embodiment includes: the device comprises a pressing disc 6.1, a first ball bearing 6.2, a centering disc 6.3 and a locking bolt 6.4. Compress tightly that the dish 6.1 is unanimous with centering disk 6.3 external diameter, and confirm according to the size of valve seat to guarantee abrasive disc positioning and clamping mechanism 6's lateral wall and valve seat inside wall clearance fit.
The pressing disc 6.1 is of a combined structure of two cylinders which are coaxially arranged in a large-upper mode and a small-lower mode, and a locking bolt mounting hole is formed in the center of the pressing disc 6.1. The toper concave surface has been seted up on the upper portion of the big cylinder on closing plate 6.1 upper portion, and the tapering of toper concave surface is less than the tapering of 5 working faces of abrasive disc, and locking bolt 6.4 is through the locking bolt mounting hole on closing plate 6.1 and the bolt hole locking connection of 4 lower extremes of grinding rod, compresses tightly abrasive paper on the abrasive disc 5.
The centering disc 6.3 is of a cylindrical structure, and the height of the centering disc 6.3 is higher than that of the small cylinder on the pressing disc 6.1. First ball bearing 6.2 sets up between the small cylinder outer wall of centering 6.3 inner walls and the pressure disk 6.1 lower part, and first ball bearing 6.2 inner circle and the cooperation of pressure disk 6.1, centering 6.3 and the cooperation of first ball bearing 6.2 outer lane. The outer ring of the lower end face of the first ball bearing 6.2 is axially locked by a locking snap ring 6.2.1, and the inner ring of the lower end face of the first ball bearing 6.2 is locked by an annular gland 6.2.2 through a screw. The structure of the grinding disc positioning and clamping mechanism 6 can ensure that the centering disc 6.3 does not rub against the inner ring of the valve seat when the abrasive paper is compressed in the grinding process, and ensures the positioning function of the centering disc 6.3 on the grinding disc 5.
The installation process of this embodiment is:
the grinding machine that this embodiment provided can be dismantled and deposit, carry, and the temporary assembly when treating the use, convenient and fast. The assembly process is as follows: firstly, the grinding disc 5 is arranged on a double-key 4.1 at the lower end of the grinding rod 4, sand paper is pasted on the grinding disc 5, the grinding disc positioning and clamping mechanism 6 is tightly pressed and connected with the grinding disc 5 through a locking bolt 6.4, and the locking bolt 6.4 is screwed down to tightly press the sand paper. The assembled grinding rod 4 is installed on a valve, the grinding disc positioning and clamping mechanism 6 is inserted into a valve seat for positioning, the spring 7 is sleeved on the upper portion or the middle portion of the grinding rod 4 according to the weight of the grinding machine and the required grinding pressure, and the fixing seat 3 and the reduction gearbox 2 which are connected together are sleeved on the grinding rod 4. Then, two bolts 3.2.2 are used for fastening and connecting the bolt adjusting grooves 3.2.1 and the bolt holes on the end face of the valve, and the fixing seat 3 is stably fixed on the valve. And finally, screwing the first adjusting block 8 and connecting the pistol drill.
The working principle of the embodiment is as follows:
the hollow shaft 2.2 in the reduction box 2 is driven to rotate by the pistol drill 1. The hollow shaft 2.2 transmits the rotational speed to the grinding spindle 4 via a flat key 2.2.4. The grinding rod 4 transmits the rotating speed to the grinding disc 5 through the double key 4.1, and further, the grinding of the high/low side valve sealing surface can be realized. The second adjusting block 4.3 and the first adjusting block 8 are respectively adjusted to realize the increase and decrease adjustment of the grinding pressure by installing the springs 7 at different positions.
When the sealing surface of the valve seat of the high/low side valve is not large, the self-weight pressure of the grinding device born by the sealing surface of the valve is not large (the self-weight pressure is not generated when the valve is inverted), and the adjustment operation for reducing the grinding pressure is not needed during grinding, so that the first adjusting block 8 is not needed, and the spring 7 is arranged in the middle of the grinding rod 4. The spring 7 is contacted with the upper end face of the second adjusting block 4.3 and the lower end face of the positioning disc 3.1. Only the second adjusting block 4.3 has to be adjusted to compress the spring 7 and thus increase to the appropriate grinding pressure. The grinder is now mounted as shown in figure 2.
When the sealing surface of the high/low side valve seat is larger, the used grinding disc 5 has larger diameter and larger weight, and the self-weight pressure of the grinding device born on the sealing surface of the valve is larger. During grinding, the adjustment operation of reducing the grinding pressure is needed, and the specific operation is as follows: firstly, a spring 7 is arranged at the upper part of a grinding rod 4, and the spring 7 is contacted with the upper end surface of a hollow core shaft 2.2 and the lower end surface of a first adjusting block 8; and secondly, the grinding rod 4 is tightly fixed, the first adjusting block 8 is slowly rotated clockwise, the scale change condition of the first adjusting block 8 on the grinding rod 4 is observed, and the first adjusting block 8 is screwed to a proper position according to the pre-estimated grinding pressure, so that the grinding pressure is reduced to a proper value. The grinder is now mounted as shown in figure 1.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. A portable high and low side valve grinder comprising: the grinding device comprises a driving mechanism, a transmission mechanism, a fixed seat, a grinding rod and a grinding disc; it is characterized by also comprising: the grinding pressure adjusting mechanism, the hollow shaft mounting seat and the grinding disc positioning and clamping mechanism are arranged on the grinding plate;
the fixed seat is provided with an interface connected with the valve end face mounting hole, and the central position of the fixed seat is provided with a through hole penetrating through the upper end face and the lower end face of the fixed seat;
the hollow shaft is arranged in the hollow shaft mounting seat through a bearing capable of bearing axial force, and the hollow shaft mounting seat is arranged on the fixed seat;
the actuating end of the driving mechanism is connected with the hollow shaft through the transmission mechanism;
the hollow shaft is of a hollow structure, the grinding rod is arranged in the hollow structure of the hollow shaft, and the lower part of the grinding rod penetrates through the through hole in the fixed seat and is sequentially connected with the grinding disc and the grinding disc positioning and clamping mechanism;
the grinding rod is connected with the hollow shaft through a transmission structure;
the upper part and the middle part of the grinding rod are provided with connecting structures connected with the grinding pressure adjusting mechanism;
when the pressure adjusting mechanism is arranged in the middle of the grinding rod, the actuating end of the pressure adjusting mechanism is in contact with one side of the fixed seat facing the grinding disc; when the pressure adjusting mechanism is arranged on the upper part of the grinding rod, the actuating end of the pressure adjusting mechanism is contacted with the upper end surface of the hollow shaft.
2. The portable high-low side valve grinder of claim 1, wherein the outer side wall of the grinding disk positioning and clamping mechanism is in clearance fit with the inner side wall of the valve seat; grinding disk positioning and clamping mechanism includes: the device comprises a pressing disc, a first ball bearing, a centering disc and a locking bolt;
the lower end of the grinding rod is provided with a bolt hole;
the pressing disc is of a combined structure of two cylinders which are large in upper part and small in lower part and are coaxially arranged, and a locking bolt mounting hole is formed in the center of the pressing disc;
the centering disc is of a cylindrical structure, the outer diameter of the centering disc is consistent with that of the pressing disc, and the height of the centering disc is higher than that of a small cylinder on the pressing disc;
the ball bearing is arranged between the inner wall of the centering disc and the outer wall of the small cylinder at the lower part of the pressing disc, the inner ring of the first ball bearing is matched with the pressing disc, and the centering disc is matched with the outer ring of the first ball bearing;
the locking bolt is connected with the bolt hole at the lower end of the grinding rod through the locking bolt mounting hole on the pressing disc in a locking mode.
3. The portable high-low side valve grinder of claim 2, wherein the upper part of the pressing plate is provided with a conical concave surface, and the conicity of the conical concave surface is smaller than that of the working surface of the grinding plate.
4. The portable high-low side valve grinder of any one of claims 1 to 3, wherein the fixing base comprises: a positioning plate and a straight arm;
the length of the straight arm is larger than the outer diameter of the positioning disc, the positioning disc is coaxially arranged on the straight arm, and the interfaces connected with the valve end face mounting holes are arranged on two end parts of the straight arm, which exceed the positioning disc;
the side at positioning disk place is the one side towards the valve disk seat, positioning disk lateral wall and valve disk seat inside wall clearance fit.
5. The portable high-low side valve grinder of claim 4, wherein the grinding pressure adjustment mechanism comprises: a spring and an adjusting block;
the upper part and the middle part of the grinding rod are provided with connecting structures which are connected with the grinding pressure adjusting mechanism and respectively comprise: the first thread structure is positioned at the upper part of the grinding rod, and the second thread structure is positioned in the middle of the grinding rod;
the adjusting block is provided with a threaded through hole;
when the adjusting block is arranged on the second threaded structure in the middle of the grinding rod through the threaded through hole, the upper part of the spring is in contact with the bottom surface of the positioning disc; when the adjusting block is arranged on the first threaded structure on the upper portion of the grinding rod through the threaded through hole, the lower portion of the spring is in contact with the upper end face of the hollow shaft.
6. The portable high-low side valve grinder of claim 5, wherein the upper end of the grinding rod is provided with a groove with a hexagonal structure.
7. The portable high-low side valve grinder of claim 6, wherein the adjusting block in the grinding pressure adjusting mechanism comprises: the first adjusting block and the second adjusting block;
the first adjusting block is arranged on the first thread structure on the grinding rod;
the second adjusting block is arranged on the second threaded structure of the grinding rod.
8. The portable high-low side valve grinder of claim 7, wherein the grinding rod is provided with length scales.
9. The portable high-low side valve grinder of claim 8, wherein the hollow shaft mounting seat is a reduction box;
the bearing capable of bearing axial force comprises: a first bearing and a second bearing; at least one of the first bearing and the second bearing is a thrust bearing;
the top and the bottom of the reduction gearbox are symmetrically provided with hollow shaft mounting holes, and one side of the reduction gearbox is provided with a driving mechanism mounting port;
the upper end of the hollow shaft is connected with the top of the reduction gearbox through a first bearing, and the lower end of the hollow shaft is connected with the bottom of the reduction gearbox through a second bearing;
the driving mechanism is connected with a driving mechanism mounting port of the reduction gearbox;
the transmission mechanism includes: the driving solid core shaft, the second ball bearing, the rotary bevel gear A and the rotary bevel gear B; the rotary bevel gear A and the rotary bevel gear B are meshed with each other, the driving solid core shaft and the hollow core shaft are vertically arranged, and the driving solid core shaft is connected with a power output end of the driving mechanism.
10. The portable high and low side valve grinder of claim 9, wherein the transmission structure disposed between the grinding rod and the hollow spindle comprises: flat keys, key slots;
the grinding rod is characterized in that a key groove formed in the outer wall of the grinding rod along the length direction of the grinding rod is arranged, a flat key is arranged on the inner wall of the hollow mandrel, the grinding rod is arranged in the hollow mandrel, and the flat key is located in the key groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022003924.0U CN213054109U (en) | 2020-09-14 | 2020-09-14 | Portable high-low side valve grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022003924.0U CN213054109U (en) | 2020-09-14 | 2020-09-14 | Portable high-low side valve grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213054109U true CN213054109U (en) | 2021-04-27 |
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ID=75558935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022003924.0U Expired - Fee Related CN213054109U (en) | 2020-09-14 | 2020-09-14 | Portable high-low side valve grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213054109U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182976A (en) * | 2021-06-30 | 2021-07-30 | 南通索星流体设备有限公司 | Special processing equipment for wedge sealing surface of valve body of wedge-top ball valve |
| CN114248158A (en) * | 2021-12-24 | 2022-03-29 | 河北国源电气股份有限公司 | Online grinding device for coupling hole for rotor |
-
2020
- 2020-09-14 CN CN202022003924.0U patent/CN213054109U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113182976A (en) * | 2021-06-30 | 2021-07-30 | 南通索星流体设备有限公司 | Special processing equipment for wedge sealing surface of valve body of wedge-top ball valve |
| CN113182976B (en) * | 2021-06-30 | 2021-08-31 | 南通索星流体设备有限公司 | Special processing equipment for wedge sealing surface of valve body of wedge-top ball valve |
| CN114248158A (en) * | 2021-12-24 | 2022-03-29 | 河北国源电气股份有限公司 | Online grinding device for coupling hole for rotor |
| CN114248158B (en) * | 2021-12-24 | 2023-01-17 | 河北国源电气股份有限公司 | Online grinding device for coupling hole for rotor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210427 |