CN2610136Y

CN2610136Y - Conical surface liquid distribution rotation valve

Info

Publication number: CN2610136Y
Application number: CN 03242435
Authority: CN
Inventors: 梁法占
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-20
Filing date: 2003-03-20
Publication date: 2004-04-07
Anticipated expiration: 2013-03-20

Abstract

Disclosed is a taper-face and liquid-matched distributing rotary valve, and each component unit has a valve core and a valve body. The valve core appears the shape that the upper portion has a cylinder and the lower portion is connected with a taper table. One side of the taper table has a working oil hole which is communicated with an oil inlet at the underside of the taper table. The taper face symmetrical with the oil hole has an overflow semi-cyclic slot. The valve body is sleeved on the outer portion of the valve core, and the valve body has an inner cavity corresponding to the valve core cylinder and the cone. The cylinder on the upper portion of the valve core is fixedly connected with a rotating crank, and the side of the valve body has two working oil holes. The solid distance between the edges of the two oil holes is longer than the aperture of the valve core working oil hole. The two limit positions for valve rotation realize the communication between the valve core working oil hole and one of the two working oil holes. Meanwhile, the other working oil hole is communicated with the overflow semi-cyclic slot of the valve core. The utility model is simple in structure, good for sealing capability, small in abrasion, long for durability, small in volume and light in weight. The utility model can be combined for utilization with one to a plurality of units, which adapts for the working need of the multipath distributing valve of hydraulic system.

Description

Cone match liquid distributes rotary valve

Technical field

The utility model relates to the selector valve that hydraulic system is used, and particularly a kind of cone match liquid of one-tenth multichannel distributing valve capable of being combined distributes rotary valve.

Background technique

Selector valve is the moving necessary assembly of hydraulic pressure tradition system, and rotary valve is the class in the selector valve, uses very extensive in engineering machinery, the spool of the rotary valve of prior art generally is that the cylndrical surface cooperates, and has poor sealing performance, to bear pressure low, easy leakage of oil when pressure is high, volume is big, and weight is big, is difficult to be combined into the multichannel distributing valve, its spool generally uses rubber, not wear-resisting, deficiency such as working life is short, therefore, prior art has improvement, perfect necessity, increases new multichannel distributing valve product.

Summary of the invention

The purpose of this utility model provides a kind of cone match liquid and distributes rotary valve, and is simple in structure, and good seal performance, wearing and tearing are little, the spreadable life limit for length, and volume is little, and is in light weight, can 1 uses to a plurality of unit combination, adapts to the job requirement of hydraulic system multichannel distributing valve.

The purpose of this utility model is achieved in that a kind of cone match liquid distributes rotary valve, and it has at least one assembly unit, and each assembly unit has spool, valve body;

Spool is top has cylindrical body, bottom to connect the shape of circular cone, in the conical surface one side of this circular cone radially circle work oilhole is arranged, this oilhole is communicated with the axial oil inlet hole of circular cone bottom surface, on the circular cone conical surfaces of 180 degree radially overflow half circle groove is being arranged with oilhole, the radially angle of this annular groove is between 120 ° to 180 °;

Valve body is set in the outside of spool, this valve body has the cylindrical body of inner chamber and spool and cone corresponding, this inner chamber bottom has cylindrical cavity to extend downwards, this cylindrical cavity has the spring that is installed in the annular groove with the intersection in awl chamber, this jump ring is realized the conical surface seal location of spool and valve body, the upper cylinder of described spool has the part of stretching out from valve body, and this part is connected with horizontal turning handle; Two work oilholes are arranged in a side of valve body, solid distance between this two oilholes edge makes spool work oilhole all not communicate with two work oilholes of this valve body when the neutral position greater than the aperture of spool work oilhole, this two oil-hole location suitably and one of two work oilholes realizing spool work oilholes and valve body in two limit positions of valve core rotation communicate, simultaneously the overflow half circle groove of another work oilhole and spool and valve body other communicate by the side overflow hole.

There is eccentric circular hole at the cylindrical body middle part of described spool, and this circular hole top is screw, and this circular hole bottom has for the conical surface that contracts in the sealing usefulness, and this conical surface is communicated with pressure limiting overflow aperture, and the bottom surface that this aperture penetrates circular cone is communicated with the peripheral hardware in-line; Communicating with eccentric circular hole of this annular groove by the next radial direction through hole that is equipped with; Circular pressure regulating valve block is equipped with in bottom at the eccentric circular hole of this spool, the front end of this valve piece has that the conical surface is corresponding with the circular hole conical surface to be become to be sealed and matched, pressure spring is equipped with on the top of this valve piece, in the screw of the eccentric circular hole on this spring top pressure regulating screw is housed, fastening screw trip bolt is equipped with on the top of this pressure regulating screw, and the ailhead of this fastening screw trip bolt exposes from the top of spool.

The assembly unit of described spool, valve body has 1 to organize at the most, be contained in respectively in the housing, the work oilhole of the connection hydraulic system that two work oilholes connection housings of the valve body of each assembly unit are drawn respectively, the oil inlet hole of each assembly unit is communicated with the unified in-line of housing, and the overflow hole of each assembly unit is communicated with the unified overflow passage of housing.

The turning handle of described spool connects one group of limitation locking operation equipment, it is configured to: a slotted hole is arranged on the turning handle, this slotted hole is with a screw pin articulated stand, this support is fixed in spacing chapter box, this chapter box is installed on housing, in this chapter box a left side is housed, right two symmetrical groups inclined-plane lock slider, this slide block respectively has latch ramp, this two slide block is contained in the dead slot of chapter box when the work oilhole is in disconnected neutral position, this two slide block is articulated in the chapter box with hinge pin respectively, this slide block has knee with the hinged pull bar of hinge pin, this pull bar one end is set with Returnning spring, and end connects another pull bar of symmetry with connecting rod in addition.

The material of described each assembly of rotary valve is a metal.

The utility model has following actively useful effect:

1. simple in structure, the technology standard is extensive, and material is common, and product cost is low.

2. good airproof performance need not rubber articles and assists, and the conical surface is realized sealing automatically under the oil pressure effect.

3. it is little to wear and tear, the spreadable life limit for length.

4. operability is good, and reliability is good.

5. flexible operation mode can have modes such as manual, electronic, pneumatic, hydraulic transmission.

6. safety coefficient height.

7. volume is little, and four the work oilholes commonly used with engineering machinery are example, and prior art is 300 * 300mm, and this product is 260 * 140mm, and weight also is reduced to 25kg by kg more than 30.

8. this product can use separately by an assembly unit, and a suitable two-position four-way valve also can be used in combination by a plurality of assembly units, adapts to the work requirements of hydraulic system multichannel distributing valve, can produce series product.

Description of drawings

Fig. 1 is the structural representation of assembly unit of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1, the position that diagram two work oilholes are all blocked;

Fig. 3 is the assembly exploded view of Fig. 1;

The same Fig. 2 of Fig. 4 shows one of work oilhole position that communicates;

Fig. 5 is the composite structure embodiment of two assembly units of the utility model;

Fig. 6 is the B-B partial view of Fig. 5, shows the structure that limits the lock-bit operation equipment.

Embodiment

Accompanying drawing number:

1. spool

101. cylindrical body 102. circular cone 103. eccentric circular holes

104. the circular hole conical surface 105. pressure limiting overflow holes 106. work oilholes

107. oil inlet hole 108. overflow half circle groove 109. through holes

110. turning handle

2. circular pressure regulating valve block 201. conical surfaces

3. pressure spring 4. pressure regulating screws 5. fastening screw trip bolts

6. valve body

601. chamber 602. cylindrical cavities, 603. work oilholes

604. work oilhole 605. overflow holes

7. spring

8. body

801. work oilhole 802. work oilholes 803. overflow passages

9. limitation locking operation equipment

901. chapter box 902. supports 903. screw pins

904. slide block 905. latch ramps 906. dead slots

907. hinge pin 908. hinge pins 909. pull bars

910. Returnning spring 911. connecting rods

Please refer to Fig. 1, Fig. 2, Fig. 3, the utility model is that a kind of cone match liquid distributes rotary valve, and it has at least one assembly unit, and each assembly unit has spool 1, valve body 6, housing 8 and limitation locking operation equipment 9.

Spool 1 is top has cylindrical body 101, bottom to connect the shape of circular cone 102, there is eccentric circular hole 103 at this cylindrical body middle part, this circular hole top is screw, this circular hole bottom has for the conical surface 104 that contracts in the sealing usefulness, this conical surface is communicated with pressure limiting overflow aperture 105, and the bottom surface that this aperture penetrates circular cone 102 is communicated with the peripheral hardware in-line; In the conical surface one side of this circular cone 102 radially circle work oilhole 106 is arranged, this oilhole is communicated with the axial oil inlet hole 107 of circular cone bottom surface, with oilhole 106 radially overflow half circle groove 108 is being arranged on the circular cone conical surfaces of 180 degree, the radially angle of this annular groove is between＞120 °～180 °, communicating with eccentric circular hole 103 by the next radial direction through hole 109 that is equipped with of this annular groove; Circular valve piece 2 is equipped with in bottom at the eccentric circular hole 103 of this spool 1, the front end of this valve piece has that the conical surface 201 and the circular hole conical surface 104 are corresponding to be become to be sealed and matched, pressure spring 3 is equipped with on the top of this valve piece 2, pressure regulating screw 4 is housed in the screw of the eccentric circular hole on this spring top, fastening screw trip bolt 5 is equipped with on the top of this pressure regulating screw 4, and the ailhead of this fastening screw trip bolt exposes from the top of spool 1.

Valve body 6 is set in the outside of spool 1, this valve body 6 has inner chamber 601 corresponding with the cylindrical body and the cone of spool 1, this inner chamber bottom has cylindrical cavity 602 to extend downwards, this cylindrical cavity has the spring 7 that is installed in the annular groove with the intersection in awl chamber, this jump ring is realized the conical surface seal location of spool 1 and valve body 2, the upper cylinder 101 of described spool 1 has the part of stretching out from valve body 6, and this part is connected with horizontal turning handle 110; Two work oilholes 603,604 are arranged in a side of valve body 6, solid distance between this two oilholes edge makes spool work oilhole 106 all not communicate with two work oilholes 603,604 of this valve body 6 when the neutral position greater than the aperture of spool 1 work oilhole 106, this work oilhole does not communicate with overflow half circle groove 108 yet.This two oilholes, 603,604 location-appropriates and realize that in two limit positions that spool 1 rotates spool work oilholes 106 communicate with two one of oilholes 603,604 of working of valve body 6; The overflow half circle groove 108 that overflow hole 605 and spool 1 is arranged in the in addition side of this valve body 6 communicates with the work oilhole of another not oil-feed during at two limit positions that spool 1 rotates, and realizes the oil return (see figure 4) that communicates.

The assembly unit of described spool 1, valve body 6 has 1 to organize at the most, be contained in respectively in the housing 8, the work oilhole 801,802 of the connection hydraulic system that two work oilhole 603,604 limits connection housings 8 of the valve body 6 of each assembly unit are drawn respectively, the oil inlet hole 108 of each assembly unit is communicated with the unified in-line of housing 8, and the overflow hole 605 of each assembly unit is communicated with the unified overflow passage 803 of housing 8.

Please refer to Fig. 5, Fig. 6, the turning handle 110 of described spool 1 connects one group of limitation locking operation equipment 9, it is configured to: a slotted hole is arranged on the turning handle 110, this slotted hole is with a screw pin 903 articulated stands 902, this support is fixed in spacing chapter box 901, this chapter box is installed on housing 8, in this chapter box a left side is housed, right two symmetrical groups inclined-plane lock slider 904, this slide block respectively has latch ramp 905, this two slide block is contained in the dead slot 906 of chapter box 901 when the work oilhole is in disconnected neutral position, this two slide block is articulated in chapter box 901 with hinge pin 907 respectively, this slide block 904 has knee with hinge pin 908 hinged pull bars 909, this pull bar one end is set with Returnning spring 910, end connects another symmetrical pull bar with connecting rod 911 in addition, is provided with people's manual operating commutation, also can be electronic, pneumatic, surge and realize commutation.

During enforcement, the material of described housing 8 is a cast iron, and the material of described spool 1, valve piece 2, valve body 6 is a spheroidal graphite cast iron.

Claims

1. a cone match liquid distributes rotary valve, and it has at least one assembly unit, and each assembly unit has spool (1), valve body (6), it is characterized in that:

Spool (1) is top has cylindrical body (101), bottom to connect the shape of circular cone (102), in the conical surface one side of this circular cone (102) radially circle work oilhole (106) is arranged, this oilhole is communicated with the axial oil inlet hole (107) of circular cone bottom surface, on the circular cone conical surfaces of 180 degree radially overflow half circle groove (108) is being arranged with oilhole (106), the radially angle of this annular groove is between 120 ° to 180 °;

Valve body (6) is set in the outside of spool (1), this valve body (6) has inner chamber (601) corresponding with the cylindrical body and the cone of spool (1), this inner chamber bottom has cylindrical cavity (602) to extend downwards, this cylindrical cavity has the spring (7) that is installed in the annular groove with the intersection in awl chamber, this jump ring is realized the conical surface seal location of spool (1) and valve body (2), the upper cylinder (101) of described spool (1) has the part of stretching out from valve body (6), and this part is connected with horizontal turning handle (110); Two work oilholes (603) are arranged in a side of valve body (6), (604), solid distance between this two oilholes edge make greater than the aperture of spool (1) work oilhole (106) spool work oilhole (106) when the neutral position with two oilholes (603) of working of this valve body (6), (604) all do not communicate, this two oilhole (603), (604) location-appropriate and realize two work oilholes (603) of spool work oilholes (106) and valve body (6) in two limit positions that spool (1) rotates, one of (604) communicate, simultaneously the overflow half circle groove (108) of another work oilhole and spool (1) and valve body (6) other communicate by side overflow hole (605).

2. cone match liquid as claimed in claim 1 distributes rotary valve, it is characterized in that: there is eccentric circular hole (103) at cylindrical body (101) middle part of described spool (1), this circular hole top is screw, this circular hole bottom has for the conical surface (104) that contracts in the sealing usefulness, this conical surface is communicated with pressure limiting overflow aperture (105), and the bottom surface that this aperture penetrates circular cone (102) is communicated with the peripheral hardware in-line; Communicating with eccentric circular hole (103) of this annular groove by the next radial direction through hole (109) that is equipped with; Circular pressure regulating valve block (2) is equipped with in bottom at the eccentric circular hole (103) of this spool (1), the front end of this valve piece has that the conical surface (201) is corresponding with the circular hole conical surface (104) to be become to be sealed and matched, pressure spring (3) is equipped with on the top of this valve piece (2), pressure regulating screw (4) is housed in the screw of the eccentric circular hole on this spring top, fastening screw trip bolt (5) is equipped with on the top of this pressure regulating screw (4), and the ailhead of this fastening screw trip bolt exposes from the top of spool (1).

3. a cone match liquid as claimed in claim 1 distributes rotary valve, it is characterized in that: the assembly unit of described spool (1), valve body (6) has 1 to organize at the most, be contained in respectively in the housing (8), work oilhole (801), (802) of the connection hydraulic system that two work oilholes (603), (604) connection housings (8) of the valve body of each assembly unit (6) are drawn respectively, the oil inlet hole of each assembly unit (108) is communicated with the unified in-line of housing (8), and the overflow hole of each assembly unit (605) is communicated with the unified overflow passage (803) of housing (8).

4. cone match liquid as claimed in claim 1 distributes rotary valve, it is characterized in that: the turning handle (110) of described spool (1) connects one group of limitation locking operation equipment (9), it is configured to: turning handle has a slotted hole on (110), this slotted hole is with a screw pin (903) articulated stand (902), this support is fixed in spacing chapter box (901), this chapter box is installed on housing (8), in this chapter box a left side is housed, right two symmetrical groups inclined-plane lock slider (904), this slide block respectively has latch ramp (905), this two slide block is contained in the dead slot (906) of chapter box (901) when the work oilhole is in disconnected neutral position, this two slide block is articulated in chapter box (901) with hinge pin (907) respectively, this slide block (904) has knee with the hinged pull bar of hinge pin (908) (909), this pull bar one end is set with Returnning spring (910), and end connects another pull bar of symmetry with connecting rod (911) in addition.

5. cone match liquid as claimed in claim 1 distributes rotary valve, and it is characterized in that: the material of described each assembly of rotary valve is a metal.