CN217966509U - Grinding equipment for sealing surface of valve seat - Google Patents

Abstract

The utility model relates to a valve processing technology field provides a sealed face grinding device of disk seat, include: a base on which a frame is arranged; the grinding assembly comprises a grinding piece and a grinding driving piece which are detachably connected, the grinding piece comprises a grinding surface, the grinding surface is horizontally arranged in a valve cavity of the valve body and is matched with a sealing surface of the valve seat in a form fit manner, and the grinding driving piece is suitable for extending into the valve cavity along a medium channel of the valve body so as to be connected with the grinding piece; the drive mechanism is arranged on the rack and at least comprises a rotary driving piece, the drive grinding driving piece can rotate relative to the valve cavity and drives the grinding piece to rotate, and in the rotating process, the grinding surface of the grinding piece is attached to the sealing surface and is suitable for grinding the sealing surface. The staff will grind the grinding member correspondence of subassembly and install on the sealed face of valve body, then will rotate the driving piece and be connected to grinding member again on, the operation rotates the driving piece and can grinds sealed face, and the staff need not to grind the operation to grinding face, and degree of automation is high.

Description

Grinding equipment for sealing surface of valve seat

Technical Field

The utility model relates to a valve processing technology field, concretely relates to sealed face grinding device of disk seat.

Background

The sealing surfaces of the valve seat and the valve core of the valve body form a valve sealing structure, the sealing surfaces of the gate valve and the check valve adopt a plane sealing surface form, the gate valve realizes forced sealing by external closing force, and the check valve controls sealing by medium pressure difference.

Because the valve is in process of production, the valve body and seat circle adopt the welding form to be connected, need grind the processing to the sealed face of seat circle after valve body and seat circle welding are accomplished, adopt handheld electric rotary gun or radial drill to grind to the sealed face of disk seat among the prior art, and the grinding process needs manual operation, and degree of automation is low.

Meanwhile, when the valve is used, the sealing surface is corroded by media for a long time, and the foreign bodies in gas and fluid are washed away and the valve is frequently opened and closed, so that the flatness of the sealing surface of the valve seat is damaged, the valve is leaked, raw materials are wasted, and economic loss is caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming and adopting handheld electric rotary gun or radial drill to the grinding of the sealed face of disk seat among the prior art to grind, and the grinding process needs manual operation, defect that degree of automation is low to a sealed face grinding device of disk seat is provided.

A valve seat sealing surface grinding apparatus comprising: a base on which a frame is arranged; the grinding assembly comprises a grinding piece and a grinding driving piece which are detachably connected, the grinding piece comprises a grinding surface, the grinding surface is horizontally arranged in a valve cavity of the valve body and is matched with a sealing surface of the valve seat in a form fit mode, and the grinding driving piece is suitable for extending into the valve cavity along a medium channel of the valve body so as to be connected with the grinding piece; the driving mechanism is arranged on the rack and at least comprises a rotary driving piece, the power output end of the rotary driving piece is connected with the grinding driving piece so as to drive the grinding driving piece to rotatably move relative to the valve cavity and drive the grinding piece to rotatably move, and in the rotating process, the grinding surface of the grinding piece is attached to the sealing surface and is suitable for grinding the sealing surface.

Optionally, in the above valve seat sealing surface grinding apparatus, the grinding assembly further includes an adjusting table, an inclined surface is formed on the adjusting table, and the valve body is adapted to be mounted on the inclined surface, so that the sealing surface is horizontally arranged.

Optionally, a mounting portion is disposed on one side surface of the grinding member in the valve seat sealing surface grinding device, a cavity with an opening at one end is formed at one end of the grinding driving member, and the cavity is adapted to the mounting portion;

the installation department both sides are established a spacing portion respectively, correspond spacing portion is in the stop part is seted up to the opening tip of cavity, the cavity of grinding the driving piece is suitable for inserting on the installation department, just spacing portion with the stop part is suitable for the butt, the grinding driving piece passes through the stop part to drive power is applyed to spacing portion, in order to drive a grinding rotational motion.

Alternatively, in the above valve seat sealing surface grinding apparatus, the blocking portion may be adapted to be provided in a curved opening.

Optionally, in the above valve seat sealing surface grinding apparatus, the driving mechanism further includes a lifting frame disposed on the frame, the rotary driving member is adapted to be mounted on the lifting frame, and a power output end of the rotary driving member is connected to the grinding driving member through an intermediate connecting member, so as to drive the grinding driving member to rotate.

Optionally, in the above valve seat sealing surface grinding apparatus, two ends of the intermediate connecting member are disposed on the body of the lifting frame, and are adapted to be provided with a first connecting port and a second connecting port at two ends thereof, one end of the grinding driving member is correspondingly inserted into the first connecting port, and a power output end of the rotary driving member is adapted to be inserted into the second connecting port.

Optionally, in the above valve seat sealing surface grinding apparatus, the driving mechanism further includes a lifting driving member, and a power output end of the lifting driving member is connected to the lifting frame, so as to be adapted to drive the lifting frame to move up and down along the machine frame.

Optionally, in the above valve seat sealing surface grinding apparatus, the driving mechanism further includes a pressure controller, and the pressure controller is electrically connected to the power output end of the lifting driving member to control the output pressure of the lifting driving member.

Optionally, in the above valve seat sealing surface grinding apparatus, the driving mechanism further includes a guide assembly including a set of first guide rails and at least one first slider, wherein the two first guide rails are disposed on the frame corresponding to two sides of the lifting frame, all the first sliders are connected to the lifting frame, and the lifting driving member is adapted to drive the lifting frame to move up and down so as to drive all the first sliders to move along the first guide rails.

Optionally, the grinding equipment for the sealing surface of the valve seat further comprises a displacement adjusting assembly, the adjusting table is arranged on the displacement adjusting assembly, the displacement adjusting assembly comprises a screw rod and at least one screw nut, the adjusting table is connected with all the screw nuts, and the screw rod rotates to drive the screw nuts to drive the adjusting table to move along the axial direction of the screw rod.

Optionally, in the above valve seat sealing surface grinding apparatus, the displacement adjusting assembly further includes a second guide rail and a second slider which are respectively disposed at two sides of the screw rod, the adjusting table is connected to all the second sliders, and the second sliders are adapted to move along the corresponding second guide rails.

Optionally, the grinding apparatus for a sealing surface of a valve seat further comprises a deflection adjusting assembly disposed on the adjusting table, the deflection adjusting assembly comprising a deflection driving member and a positioning member, the adjusting table being provided with a groove, a portion of the positioning member extending into the groove, and a power output end of the deflection driving member adapted to extend into the groove and connected to the positioning member;

the setting element includes the location reference surface, the location reference surface with the grinding surface sets up perpendicularly, just the drive piece that deflects drives the setting element is followed the recess removes, in order will the location reference surface with the valve body laminating is suitable for the adjustment the deflection angle of valve body.

Optionally, in the above valve seat sealing surface grinding apparatus, the deflection adjusting assembly further includes at least one pressing member including a pressing force output end, and the pressing force output end abuts against the positioning member to apply a pressing force to the positioning member.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a pair of sealed face grinding device of disk seat, include: a base on which a frame is arranged; the grinding assembly comprises a grinding piece and a grinding driving piece which are detachably connected, the grinding piece comprises a grinding surface, the grinding surface is horizontally arranged in a valve cavity of the valve body and is matched with a sealing surface of the valve seat in a form fit mode, and the grinding driving piece is suitable for extending into the valve cavity along a medium channel of the valve body so as to be connected with the grinding piece; the driving mechanism is arranged on the rack and at least comprises a rotary driving piece, the power output end of the rotary driving piece is connected with the grinding driving piece so as to drive the grinding driving piece to rotate relative to the valve cavity and drive the grinding piece to rotate, and in the rotating process, the grinding surface of the grinding piece is attached to the sealing surface and is suitable for grinding the sealing surface.

Among the grinding device of this structure, it sets up to dismantle the connection with grinding the grinding member among the grinding unit, utilize actuating mechanism's rotation driving piece drive to grind the driving piece and drive a grinding rotary motion, at the pivoted in-process, the lapping surface and the sealed face laminating of grinding member set up, and then realize the effect of grinding sealed face, the staff corresponds the grinding member of grinding unit and installs on the sealed face of valve body, then will rotate the driving piece and be connected to grinding on the member, the operation rotates the driving piece and can grind sealed face, the staff need not to grind the operation to the grinding surface, and the automation is high, overcome and adopted handheld electric rotary gun or radial drill to grind to the grinding of the sealed face of disk seat among the prior art, the process of grinding needs manual operation, the defect that degree of automation is low.

2. The utility model provides an among the sealed face grinding device of disk seat, grinding unit is still including adjusting the platform, adjust the bench and set up the inclined plane, the valve body is suitable for to be installed on the inclined plane, so that the level setting is personally submitted to the sealing.

In the grinding equipment of this structure, through setting up the adjustment platform, set up the inclined plane on the adjustment platform, can adjust the inclination of valve body for the sealed face that is in the tilt state in the valve body can be in horizontal position, guarantees that the abrasive surface of grinding the piece can laminate with sealed face.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a grinding apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure shown in FIG. 1;

FIG. 3 is a schematic view of a connection structure between the polishing driving member and the polishing member;

FIG. 4 is a schematic view of the structure of the intermediate link;

FIG. 5 is a schematic view of a connection structure of the adjustment stage and the displacement adjustment assembly;

FIG. 6 is a schematic view of the positions of the mounting and limiting portions on the polishing element;

description of reference numerals:

1. a base; 2. a frame;

3. a grinding assembly; 301. a grinding member; 302. grinding the driving member; 303. grinding the surface; 304. an adjusting table; 305. an installation part; 306. a cavity; 307. a limiting part; 308. a blocking portion; 309. an inclined surface;

4. a drive mechanism; 401. rotating the driving member; 402. a lifting frame; 403. an intermediate connecting member; 404. a first connection port; 405. a second connection port; 406. a lifting drive member; 407. a pressure controller; 408. a first guide rail; 409. a first slider;

5. a displacement adjustment assembly; 501. a screw rod; 502. a feed screw nut; 503. a second guide rail; 504. a second slider;

6. a deflection adjustment assembly; 601. a deflection drive; 602. a positioning member; 603. positioning a reference surface; 604. and a pressing member.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

The present embodiment describes a valve seat sealing surface grinding apparatus, referring to fig. 1-6, the grinding apparatus includes a base 1, a frame 2, a grinding assembly 3, and a driving mechanism 4, wherein the frame 2 is disposed on the base 1, the grinding assembly 3 includes a grinding member 301 and a grinding driving member 302 which are detachably connected, the grinding member 301 includes a grinding surface 303, the grinding surface 303 is horizontally disposed in a valve cavity of the valve body and is in form fit with a sealing surface of the valve seat, the grinding driving member 302 is adapted to extend into the valve cavity along a media passage of the valve body to be connected with the grinding member 301, the driving mechanism 4 is disposed on the frame 2 and at least includes a rotation driving member 401, a power output end of the rotation driving member 401 is connected with the grinding driving member 302 to drive the grinding driving member 302 to rotate relative to the valve cavity and to drive the grinding member 301 to rotate, and during the rotation, the grinding surface 303 of the grinding member 301 is in fit with the sealing surface to grind the sealing surface.

Set up grinding piece 301 and grinding driving piece 302 in grinding subassembly 3 to dismantling the connection, utilize the rotation driving piece 401 drive of actuating mechanism 4 to grind driving piece 302 and drive grinding piece 301 rotary motion, at the pivoted in-process, the lapping surface 303 and the sealed face laminating of grinding piece 301 set up, and then realize the effect of grinding sealed face, the staff corresponds the grinding piece 301 of grinding subassembly 3 and installs on the sealed face of valve body, then will rotate driving piece 401 and be connected to on grinding piece 301 again, operation rotation driving piece 401 can grind sealed face, the staff need not to grind the operation to grinding surface 303, degree of automation is high, and this grinding piece 301's lapping surface 303 sets up to the horizontal plane, can grind sealed face for the level form, guarantee its roughness.

In this embodiment, in order to adjust the inclination angle of the valve body, the grinding assembly 3 further includes an adjusting table 304, an inclined plane 309 is formed on the adjusting table 304, the valve body is suitable for being installed on the inclined plane 309, so that the sealing surface is horizontally arranged, the sealing surface in the inclined state in the valve body can be in a horizontal position, and it is ensured that the grinding surface 303 of the grinding piece 301 can be attached to the sealing surface, for example, the sealing surface of the wedge valve is adjusted, so that the sealing surface of the wedge valve can be in a horizontal state, and after the sealing surface is attached to the sealing surface, the flat grinding of the grinding piece 301 on the sealing surface is realized.

In this embodiment, an installation portion 305 is disposed on one side surface of the grinding member 301, a cavity 306 with an opening at one end is disposed at one end of the grinding driving member 302, the cavity 306 is adapted to the installation portion 305, that is, the installation portion 305 is installed in the cavity 306, meanwhile, a limiting portion 307 is disposed on two sides of the installation portion 305, a blocking portion 308 is disposed at an opening end portion of the cavity 306 corresponding to the limiting portion 307, and after the cavity 306 of the grinding driving member 302 is adapted to be inserted into the installation portion 305, the limiting portion 307 can be adapted to abut against the blocking portion 308.

Above-mentioned grinding driving piece 302 can block portion 308 and exert drive power to spacing portion 307 to drive grinding piece 301 rotational motion, at rotational motion's in-process, block portion 308 is blockked by spacing portion 307, guarantee the stability of rotation process, after rotating, only need rotate block portion 308 and spacing portion 307 separation, then upward operation grinding driving piece 302, can dismantle grinding driving piece 302 and grinding piece 301 and accomplish, specifically, can be suitable for blocking portion 308 to be the setting of curve opening.

In a specific application, the head of the mounting part 305 can be spherical, and the spherical top of the mounting part 305 is in contact with the bottom plane of the cavity 306, so that the requirements that the grinding surface 303 of the grinding piece 301 is floated, finely adjusted and tightly attached to the sealing surface of the valve body are met.

In this embodiment, the driving mechanism 4 further includes a lifting frame 402 disposed on the frame 2, the rotary driving member 401 is adapted to be mounted on the lifting frame 402, and the power output end of the rotary driving member is connected to the grinding driving member 302 through an intermediate connecting member 403 to drive the grinding driving member 302 to rotate, specifically, two ends of the intermediate connecting member 403 are disposed on the body of the lifting frame 402, and are adapted to be provided with a first connecting port 404 and a second connecting port 405 at two ends thereof, one end of the grinding driving member 302 is correspondingly inserted into the first connecting port 404, the other end of the grinding driving member 302 is connected to the grinding member 301, and the power output end of the rotary driving member 401 is adapted to be inserted into the second connecting port 405.

In a specific application, the first connection port 404 and the second connection port 405 may be provided with internal splines, the outer circumferential surface of the grinding driving member 302 and the outer circumferential surface of the power output end of the rotary driving member 401 are provided with external splines, the connection of the grinding driving member 302, the intermediate connection member 403 and the rotary driving member 401 is completed through the connection of the splines, and the rotary driving member 401 may be a rotary motor, or may be a hydraulic motor.

In this embodiment, in order to adjust the height of the lifting frame 402 to achieve the effect of extracting the grinding drive 302 from the valve cavity, the driving mechanism 4 further includes a lifting drive 406, a power output end of the lifting drive 406 is connected to the lifting frame 402 to be suitable for driving the lifting frame 402 to move up and down along the machine frame 2, and in a specific application, the lifting drive 406 employs a hydraulic drive cylinder, and a piston cylinder of the hydraulic drive cylinder is used as a power output end and is connected to the lifting frame 402 to achieve the lifting and lowering of the lifting frame 402.

The grinding drive 302 and the intermediate connecting member 403 in this embodiment are both provided in the shape of rods.

The driving mechanism in this embodiment further includes a pressure controller 407, wherein the pressure controller 407 is electrically connected to the power output end of the lifting driving member 406 to control the output pressure of the lifting driving member 406, so as to adjust the pressure applied by the polishing member 301 to the sealing surface.

In this embodiment, the driving mechanism further includes a guiding assembly, which includes a set of first guide rails 408 and at least one first sliding block 409, wherein the two first guide rails 408 are disposed on the frame 2 corresponding to two sides of the lifting frame 402, all the first sliding blocks 409 are connected to the lifting frame 402, and the lifting driving member 406 is adapted to drive the lifting frame 402 to move up and down so as to drive all the first sliding blocks 409 to move along the first guide rails 408.

The grinding device in this embodiment further includes a displacement adjusting assembly 5, the adjusting table 304 is disposed on the displacement adjusting assembly 5, the displacement adjusting assembly 5 includes a screw 501 and at least one screw nut 502, the adjusting table 304 is connected to all the screw nuts 502, the screw nut 502 can be driven to drive the adjusting table 304 to move along the axial direction of the screw 501 after the screw 501 rotates, so as to achieve real-time adjustment of the position of the valve body, and the power source of the screw is a rotating motor, for example, a servo motor is used.

In this embodiment, the displacement adjusting assembly 5 further includes a second guide rail 503 and a second slider 504 which are respectively disposed at two sides of the screw rod 501, the adjusting platform 304 is connected to all the second sliders 504, and all the second sliders 504 are adapted to move along the corresponding second guide rail 503, and the second guide rail 503 and the second slider 504 are simply adapted to facilitate operation.

In this embodiment, the deflection adjusting assembly 6 further includes a deflection driving member 601 and a positioning member 602, a groove is formed in the adjusting table 304, a portion of the positioning member 602 extends into the groove, a power output end of the deflection driving member 601 is adapted to extend into the groove and is connected to the positioning member 602, the positioning member 602 includes a positioning reference surface 603, the positioning reference surface 603 is perpendicular to the grinding surface 303, and the deflection driving member 601 drives the positioning member 602 to move along the groove so as to attach the positioning reference surface 603 to the valve body, so as to adjust a deflection angle of the valve body.

Specifically, adjusting the deflection angle of the valve body is a process, the positioning reference surface 603 is continuously close to the middle flange of the valve body, and then is continuously attached to the flange surface of the middle flange of the valve body, the deflection angle of the valve body can be continuously adjusted in the attaching process, and when the positioning reference surface 603 of the positioning member 602 is completely attached to the flange surface, the deflection adjustment of the valve body can be completed.

In order to avoid that the grinding force applied by the grinding driving member to the valve seat by the grinding member during the grinding process causes the valve body to rotate again, the deflection adjusting assembly in this embodiment further includes at least one pressing member 604, which includes a pressing force output end abutting against the positioning member 602 to apply a pressing force to the positioning member 602, specifically, the pressing members 604 are provided in two numbers, which are respectively disposed at two sides of the positioning member 602, and employ pressing cylinders, piston rods of which are pressed toward the positioning member 602 to fix the positioning member 602 in the groove, so that the positioning member 602 can fix the valve body on the adjusting table 304, and prevent the valve body from rotating again during the grinding process.

The cylinder and the motor in the embodiment are controlled by a controller adopting a PLC, all parameters are set by the PLC and then the whole grinding process is automatically controlled, and the requirements of automatic coarse grinding and accurate grinding of different models of products are met.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims (13)

1. An apparatus for grinding a sealing surface of a valve seat, comprising:

a base (1) on which a frame (2) is arranged;

a grinding assembly (3) comprising a detachably connected grinding member (301) and a grinding driving member (302), wherein the grinding member (301) comprises a grinding surface (303), the grinding surface (303) is horizontally arranged in a valve cavity of the valve body and is matched with a sealing surface of a valve seat in a form fit manner, and the grinding driving member (302) is suitable for extending into the valve cavity along a medium passage of the valve body so as to be connected with the grinding member (301);

the driving mechanism (4) is arranged on the rack (2) and at least comprises a rotary driving piece (401), the power output end of the rotary driving piece (401) is connected with the grinding driving piece (302) to drive the grinding driving piece (302) to do rotary motion relative to the valve cavity and drive the grinding piece (301) to do rotary motion, and in the rotating process, the grinding surface (303) of the grinding piece (301) is attached to the sealing surface and is suitable for grinding the sealing surface.

2. The apparatus for grinding the sealing surface of a valve seat according to claim 1, wherein the grinding unit (3) further comprises an adjusting table (304), the adjusting table (304) being provided with an inclined surface (309), and the valve body is adapted to be mounted on the inclined surface (309) so as to horizontally arrange the sealing surface.

3. The grinding device for the sealing surface of the valve seat is characterized in that a mounting part (305) is arranged on one side surface of the grinding piece (301), a cavity (306) with an opening end is formed in one end of the grinding driving piece (302), and the cavity (306) is matched with the mounting part (305);

install portion (305) both sides are established a spacing portion (307) respectively, correspond spacing portion (307) are in the open end of cavity (306) sets up stop part (308), the cavity (306) of grinding driving piece (302) are suitable for inserting on installation portion (305), just spacing portion (307) with stop part (308) are suitable for the butt, grinding driving piece (302) pass through stop part (308) to spacing portion (307) application drive power, in order to drive grinding piece (301) rotational motion.

4. The valve seat sealing surface grinding apparatus according to claim 3, wherein the blocking portion (308) is adapted to be disposed in a curvilinear opening.

5. A valve seat sealing surface grinding apparatus according to any one of claims 1 to 4, wherein the driving mechanism (4) further comprises a lifting frame (402) arranged on the frame (2), the rotary driving member (401) is adapted to be mounted on the lifting frame (402), and the power output end of the rotary driving member is connected with the grinding driving member (302) through an intermediate connecting member (403) so as to drive the grinding driving member (302) to rotate.

6. The valve seat sealing surface grinding device according to claim 5, wherein the middle connecting piece (403) is arranged on the body of the lifting frame (402) at two ends and is suitable for being provided with a first connecting port (404) and a second connecting port (405) at the two ends, one end of the grinding driving piece (302) is correspondingly inserted into the first connecting port (404), and the power output end of the rotary driving piece (401) is suitable for being inserted into the second connecting port (405).

7. The valve seat sealing surface grinding apparatus according to claim 6, wherein the driving mechanism (4) further comprises an elevating drive member (406), and a power output end of the elevating drive member (406) is connected with the elevating frame (402) so as to be suitable for driving the elevating frame (402) to move up and down along the machine frame (2).

8. The valve seat sealing surface grinding apparatus according to claim 7, wherein the drive mechanism further comprises a pressure controller (407), the pressure controller (407) being electrically connected to the power output of the lift drive (406) to control the output pressure of the lift drive (406).

9. The valve seat sealing surface grinding device according to claim 8, wherein the driving mechanism further comprises a guide assembly which comprises a set of first guide rails (408) and at least one first sliding block (409), wherein the two first guide rails (408) are arranged on the machine frame (2) corresponding to two sides of the lifting frame (402), all the first sliding blocks (409) are connected with the lifting frame (402), and the lifting driving member (406) is suitable for driving the lifting frame (402) to move up and down so as to drive all the first sliding blocks (409) to move along the first guide rails (408).

10. The valve seat sealing surface grinding device according to claim 9, further comprising a displacement adjusting assembly (5), wherein the adjusting table (304) is arranged on the displacement adjusting assembly (5), the displacement adjusting assembly (5) comprises a screw (501) and at least one screw nut (502), the adjusting table (304) is connected with all the screw nuts (502), and the screw (501) moves in a rotating manner to drive the screw nut (502) to drive the adjusting table (304) to move along the axial direction of the screw (501).

11. The valve seat sealing surface grinding apparatus according to claim 10, wherein the displacement adjusting assembly (5) further comprises a second guide rail (503) and a second slider (504) which are adapted to be disposed on both sides of the lead screw (501), the adjusting table (304) is connected to all of the second sliders (504), and the second sliders (504) are adapted to move along the corresponding second guide rails (503).

12. The valve seat sealing surface grinding apparatus according to claim 11, further comprising a deflection adjustment assembly (6) disposed on the adjustment table (304) and including a deflection driving member (601) and a positioning member (602), wherein a recess is defined in the adjustment table (304), a portion of the positioning member (602) extends into the recess, and a power take-off of the deflection driving member (601) is adapted to extend into the recess and couple to the positioning member (602);

the positioning piece (602) comprises a positioning reference surface (603), the positioning reference surface (603) is perpendicular to the grinding surface (303), and the deflection driving piece (601) drives the positioning piece (602) to move along the groove, so that the positioning reference surface (603) is attached to the valve body and the deflection angle of the valve body can be adjusted.

13. The valve seat sealing face grinding apparatus of claim 12, wherein the deflection adjustment assembly further comprises at least one pressing member (604) including a pressing force output that abuts the positioning member (602) to apply a pressing force to the positioning member (602).

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