CN207824657U

CN207824657U - valve seat grinder

Info

Publication number: CN207824657U
Application number: CN201721782406.5U
Authority: CN
Inventors: 张旭东
Original assignee: Zigong Chuan Nan Pottery Mill
Current assignee: Zigong Chuan Nan Pottery Mill
Priority date: 2017-12-19
Filing date: 2017-12-19
Publication date: 2018-09-07
Anticipated expiration: 2027-12-19

Abstract

The utility model discloses a kind of valve seat grinders, including rack, variable-frequency motor, the lower main shaft being connected by shaft coupling with variable-frequency motor, lower main shaft is externally provided with bearing and bearing block, it is characterised in that the upper end of lower main shaft is connected with support base by key, fixed Work fixing device on support base；Speed regulating motor is equipped in rack, the output shaft of speed regulating motor is connected with upper main shaft, and upper main shaft is connected by key and mounting base, is installed with the inclined air motor of axis in mounting base, and the connecting rod that output shaft and the lower end of air motor are installed with mill ball is connected；The utility model has the advantages that grinding efficiency is high, sealing effect is good and applied widely.

Description

Valve seat grinder

Technical field

The utility model is related to a kind of grinders, are especially used for the grinder of ball seat.

Background technology

The sealing performance of ball valve depends on the compactness of ball valve and valve seat, therefore need to be ground to valve seat；Currently used for The grinding device of ball seat is the support base of installation support mill ball and valve seat on pedestal, real by hand-turning valve seat Now grind；Its production efficiency is relatively low, and sealing effect is poor, and the scope of application is small.

Invention content

The purpose of this utility model is to be directed to deficiencies of the prior art, provides a kind of valve seat grinder, it has Have the advantages that grinding efficiency is high, sealing effect is good and applied widely.

In order to achieve the above objectives, the valve seat grinder of the utility model, including rack, variable-frequency motor and variable-frequency motor are logical The lower main shaft that shaft coupling is connected is crossed, lower main shaft is externally provided with bearing and bearing block, it is characterised in that the upper end of lower main shaft and support base It is connected by key, fixed Work fixing device on support base；In rack be equipped with speed regulating motor, the output shaft of speed regulating motor with it is upper Main shaft is connected, and upper main shaft is connected by key and mounting base, and the inclined air motor of axis is installed in mounting base, air motor The connecting rod that output shaft is installed with mill ball with lower end is connected.

Above-mentioned Work fixing device can be scroll chuck；

Above-mentioned Work fixing device may be the mounting disc equipped with several radial lock-screws；

In use, valve seat is fixed on Work fixing device, valve seat and grinding are driven by variable-frequency motor, speed regulating motor Ball reversely rotates, while air motor driving grinding revolutions, and the relative rotation speed of valve seat and mill ball, processing efficiency can be improved Height, and the finish and compactness of sealing surface are improved, to improve sealing effect；The inclined connecting rod of axis so that mill ball can Suitable for the valve seat of different-diameter,（When grinding the valve seat of different size, mill ball, grinding ball link and adjustment step are only needed to change Stepper motor driver step number）, applied widely；

The output shaft of the air motor is connected with connecting tube as a further improvement of the utility model, in connecting tube If blind hole, connecting tube two lateral walls are equipped with one section of axial slide, and the upper end sliding of the connecting rod is set in blind hole, in connecting rod Compressed spring is equipped in the connecting tube at upper end rear；One pivot pin pass through connecting rod and slide be placed in axial slide, under pivot pin The connecting tube excircle of side is equipped with annular groove, and baffle ring is equipped in annular groove；Mill ball can apply certain in the axis upward sliding of connecting rod Precompression, convenient for improve grinding effect, and to the valve seat of different-diameter carry out station compensation；

Be additionally provided with stepper motor in rack as a further improvement of the utility model, the output shaft of stepper motor with The input shaft of Dual-output reducer is connected, and an output shaft of Dual-output reducer is connected by shaft coupling and horizontal drive shaft, water The other end of moving axis of flating pass is connected by the input shaft of shaft coupling and retarder, the output shaft and Dual-output reducer of the retarder Another output shaft be connected by shaft coupling and respective ball screw, the speed regulating motor is fixedly arranged on longitudinal slide, longitudinal The both ends of slide are associated with the nut coordinated with respective ball screw；The lengthwise position of adjustable mill ball, is suitable for different height Valve seat；

The shaft coupling being connected as a further improvement of the utility model, with Dual-output reducer and retarder is plum blossom Shaft coupling；Plum coupling can automatic core-adjusting, improve the synchronism of longitudinal slide both ends longitudinal movement；

In conclusion the utility model has the advantages that grinding efficiency is high, sealing effect is good and applied widely.

Description of the drawings

Fig. 1 is the front view of the utility model embodiment.

Fig. 2 is the front view of connecting tube in Fig. 1.

Fig. 3 is the A-A sectional views of Fig. 2.

Fig. 4 is the front view of Work fixing device in another embodiment of the utility model.

Specific implementation mode

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1 to Figure 3, the valve seat grinder, including rack 1, variable-frequency motor 2 and variable-frequency motor 2 pass through shaft coupling The 3 lower main shafts 4 being connected, lower main shaft 4 are externally provided with bearing 5 and bearing block 6, and bearing block 6 is connected firmly with the welding of rack 1, lower main shaft 4 it is upper End is connected with support base 7 by key, fixed scroll chuck 8 on support base 7；Stepper motor 9, stepping electricity are additionally provided in rack 1 The output shaft of machine 9 is connected with the input shaft of Dual-output reducer 10, and an output shaft of Dual-output reducer 10 passes through plum blossom shaft coupling Device 11 is connected with horizontal drive shaft 12, the input shaft that the other end of horizontal drive shaft 12 passes through plum coupling 13 and retarder 14 Be connected, the output shaft of the retarder 14 and another output shaft of Dual-output reducer 10 by plum coupling 15 with it is respective Ball screw 16 is connected, and a speed regulating motor 17 is fixedly arranged on longitudinal slide 18, and the both ends of longitudinal slide 18 are associated with and respective ball The nut 19 that lead screw 16 coordinates；The output shaft of speed regulating motor 17 is connected with upper main shaft 20, and upper main shaft 20 passes through key and mounting base 21 It is connected, mounting base 21 is fixedly connected with the inclined air motor 22 of axis, and output shaft and the connecting tube 23 of air motor 22 are connected, connection Blind hole is set in pipe 23,23 two lateral walls of connecting tube are equipped with one section of axial slide 24, and being set to for the upper end sliding of a connecting rod 25 is blind In hole, 25 upper end rear of connecting rod connecting tube 23 in be equipped with compressed spring 26, a pivot pin 27 pass through connecting rod 25 and slide set In axial slide 24,23 excircle of connecting tube below pivot pin 27 is equipped with annular groove 28, and baffle ring 30 is equipped in annular groove 28；Connecting rod 25 lower ends are installed with mill ball 29；Upper main shaft 20 is additionally provided with endoporus, the tracheae for installing air motor 22；

In use, valve seat is fixed on scroll chuck 8, start variable-frequency motor 2, speed regulating motor 17 so that lower main shaft 4, Support base 7 and scroll chuck 8 drive valve seat rotation, upper main shaft 20 to pass through mounting base 21, air motor 22, connecting tube 23 and connecting rod 25 drive mill balls 29 are reversely rotated with valve seat, while air motor 22 drives 29 rotation of mill ball, and valve seat can be improved and grind The relative rotation speed of abrading-ball 29, it is high in machining efficiency, and the finish and compactness of sealing surface are improved, to improve sealing effect；Axis The inclined connecting rod of line 25 so that mill ball 29 is applicable to the valve seat of different-diameter,（When grinding the valve seat of different size, only need Replace mill ball, grinding ball link and adjustment stepper motor driver step number）, applied widely；

Pass through stepper motor 9, Dual-output reducer 10, horizontal drive shaft 12, retarder 14, ball screw 16 and nut 19, the lengthwise position of mill ball 29 is adjusted, is suitable for the valve seat of different height；Compressed spring 26 is so that mill ball 29 can be even The axis upward sliding of bar, applies certain precompression, convenient for improving grinding effect, and carries out station to the valve seat of different-diameter Compensation；

The present invention is not limited to the above embodiments, can also be as shown in figure 4, to can be used equipped with several radial lockings The mounting disc 32 of screw 31 is used as valve seat fixing device.

Claims

1. a kind of valve seat grinder, including rack, variable-frequency motor, the lower main shaft being connected by shaft coupling with variable-frequency motor, lower master Axis is externally provided with bearing and bearing block, it is characterised in that the upper end of lower main shaft is connected with support base by key, fixed work on support base Part fixing device；Speed regulating motor is equipped in rack, the output shaft of speed regulating motor is connected with upper main shaft, and upper main shaft passes through key and peace Dress seat is connected, and the inclined air motor of axis is installed in mounting base, and output shaft and the lower end of air motor are installed with mill ball Connecting rod be connected.

2. valve seat grinder as described in claim 1, it is characterised in that the Work fixing device is scroll chuck.

3. valve seat grinder as described in claim 1, it is characterised in that the Work fixing device is equipped with several radial locks The mounting disc of tight screw.

4. the valve seat grinder as described in claims 1 to 3 is any, it is characterised in that the output shaft of the air motor and connection Pipe is connected, and blind hole is set in connecting tube, and connecting tube two lateral walls are equipped with one section of axial slide, and the upper end sliding of the connecting rod is set In in blind hole, compressed spring is equipped in the connecting tube at small end rear；One pivot pin pass through connecting rod and slide be placed in axial direction In sliding slot, the connecting tube excircle below pivot pin is equipped with annular groove, and baffle ring is equipped in annular groove.

5. valve seat grinder as claimed in claim 4, it is characterised in that stepper motor is additionally provided in rack, stepper motor Output shaft is connected with the input shaft of Dual-output reducer, and an output shaft of Dual-output reducer passes through shaft coupling and horizontal drive shaft It is connected, the other end of horizontal drive shaft is connected by the input shaft of shaft coupling and retarder, the output shaft of the retarder and lose-lose Another output shaft for going out retarder is connected by shaft coupling and respective ball screw, and the speed regulating motor is fixedly arranged on longitudinal slide On, the both ends of longitudinal slide are associated with the nut coordinated with respective ball screw.

6. valve seat grinder as claimed in claim 5, it is characterised in that described with Dual-output reducer and retarder is connected Shaft coupling is plum coupling.