CN213575857U

CN213575857U - Throttle valve speed regulating device

Info

Publication number: CN213575857U
Application number: CN202022523248.XU
Authority: CN
Inventors: 李斌
Original assignee: Sichuan Tianao Environmental Protection Science & Technology Co ltd
Current assignee: Sichuan Tianao Environmental Protection Science & Technology Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-06-29
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses a choke valve speed adjusting device, including the valve body, be equipped with the valve pocket in the valve body, the perforation has been seted up on the upper portion of valve pocket, wears to be equipped with the valve rod in the perforation, has seted up the seal groove on the perforation, and the built-in lug that is equipped with of seal groove, seal groove endotheca are equipped with the sealing washer, have seted up the slot on the seal groove, and the slot is interlude to have the lug in the slot, has seted up the fluting on the valve body, and grooved tank bottom cover is equipped with the packing ring, and the packing ring is placed on the seal ring. Through rotatory spiral cover, make external screw thread one and internal thread screw-thread fit, fix the spiral cover on the valve body, make the spiral cover push down the press piece in the fluting, make and press the press piece can be with the waterproof layer compaction, the packing ring of fluting bottom can be fixed to the compacted waterproof layer, and the sealing washer in the seal groove is compressed tightly to the rethread packing ring, and through the lug extrusion, the sealing washer can seal the gap between perforation and valve rod.

Description

Throttle valve speed regulating device

Technical Field

The utility model belongs to the technical field of the choke valve, concretely relates to choke valve speed adjusting device.

Background

The throttle valve is a valve for controlling fluid flow by changing throttle section or throttle length, and can be combined into a one-way throttle valve by connecting the throttle valve and the one-way valve in parallel, the throttle valve and the one-way throttle valve are simple flow control valves, in a constant displacement pump hydraulic system, the throttle valve is matched with an overflow valve, and can be combined into three throttle speed regulating systems, namely an oil inlet path throttle speed regulating system, an oil return path throttle speed regulating system and a bypass throttle speed regulating system, the throttle valve has no flow negative feedback function, cannot compensate speed instability caused by load change, generally only is used for occasions with small load change or low requirement on speed stability, the throttle valve is applied to more automobile fields, generally the automobile throttle valve is arranged on an engine and is used for controlling the oil mass (commonly called as an accelerator) entering a cylinder for combustion, the larger opening degree is, the more fuel, the opening degree of the accelerator is changed, so that the rotation speed of the engine is controlled.

The existing throttle valve speed regulating device changes the intercepting area of a valve core in a valve body through rotating a valve rod, can control the size of a valve outlet, increases the pressure in the valve body, thereby the pressure can increase the flow rate of oil in the valve body, achieves the effect of speed regulation, and has the following defects: because the connecting position of the valve rod and the valve body has a gap, the pressure intensity in the valve is always kept the same as the external environment, the change fluctuation is small, the flow velocity of oil is fixed, the speed regulation effect of the throttle valve is influenced, and the speed regulation effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a choke valve speed adjusting device to solve the current not good problem of choke valve speed adjusting device leakproofness.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a choke valve speed adjusting device, includes the valve body, be equipped with the valve pocket in the valve body, the perforation has been seted up on the upper portion of valve pocket, wear to be equipped with the valve rod in the perforation, the seal groove has been seted up on the perforation, the built-in lug that is equipped with of seal groove, the seal groove endotheca is equipped with the sealing washer, the slot has been seted up on the sealing washer, the slot interlude has the lug in the slot, the fluting has been seted up on the valve body, the grooved tank bottom cover is equipped with the packing ring, the packing ring is placed on the sealing washer, the packing ring upper berth is equipped with.

Preferably, the upper portion of the valve body is provided with a first external thread, the screw cap is internally provided with an internal thread, and the first external thread is in threaded connection with the internal thread.

Preferably, a through hole is formed in the screw cap, a valve rod penetrates through the through hole, a connecting rod is arranged on the screw cap in a penetrating mode, a supporting plate is arranged on the connecting rod in a penetrating mode, a threaded hole is formed in the supporting plate, the valve rod penetrates through the threaded hole, a second external thread is arranged on the valve rod, and the second external thread is in threaded fit with the threaded hole.

Preferably, the valve rod is sleeved with a rotary disc, a sleeve block is arranged below the rotary disc, a second opening is formed in the sleeve block, a first opening is formed in the valve rod, and a first bolt is inserted into the first opening and the second opening and locked by a nut.

Preferably, the screw cap is provided with an extrusion hole, and a second bolt is in threaded fit in the extrusion hole.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a choke valve speed adjusting device, through rotatory spiral cover, make external screw thread one and interior screw-thread fit, fix the spiral cover on the valve body, make the spiral cover push down according to the briquetting in the fluting, make according to the briquetting can be with the waterproof layer compaction, the packing ring of fluting bottom can be fixed to the compacted waterproof layer, the sealing washer in the seal groove is compressed tightly to the rethread packing ring, because the sealing washer receives when decurrent effort, through the conflict of lug in the slot, the sealing washer takes place deformation and seals the gap between perforation and valve rod, thereby can improve the leakproofness of whole device, make the speed governing effect can reach better.

The utility model provides a choke valve speed adjusting device, because the collets is sliding fit with the valve rod, pass through the collets with the carousel and be connected with the valve rod, with bolt one alternate in trompil two on the collets and the trompil one on the valve rod and use nut locking, make the carousel can drive the valve rod and rotate, be convenient for disassemble, can avoid receiving external factor influence, with the rotatory carousel of hand, through two external screw threads on the valve rod and the screw hole screw-thread fit on the layer board, make the valve rod can carry out vertical linear motion, conveniently control the size of valve in the choke valve, thereby can be better carry out speed control.

Drawings

Fig. 1 is a schematic front view of the present invention;

fig. 2 is a left side view of the present invention;

fig. 3 is a schematic view of the structure of the present invention;

fig. 4 is a left side view structure diagram of the present invention;

FIG. 5 is an enlarged view of a portion a of FIG. 3;

fig. 6 is an enlarged schematic view of fig. 4 at b.

In the figure: the valve comprises a valve body 1, a valve cavity 2, a through hole 3, a valve rod 4, a sealing groove 5, a convex block 6, a sealing ring 7, an insertion groove 8, a grooving 9, a gasket 10, a waterproof layer 11, a pressing block 12, a screw cap 13, a first external thread 14, a first internal thread 15, a through hole 16, a connecting rod 17, a supporting plate 18, a threaded hole 19, a rotary disk 20, a sleeve block 21, a first hole 22, a first bolt 23, a nut 24, a second hole 25, a second external thread 26, an extrusion hole 27 and a second bolt 28.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1, 2, 3, 4 and 5, a throttle valve speed adjusting device includes a valve body 1, an upper end of the valve body 1 is a cylindrical structure, a valve cavity 2 is arranged in the valve body 1, a through hole 3 is arranged at an upper portion of the valve cavity 2 and is a circular hole, a valve rod 4 penetrates through the through hole 3, the valve rod 4 is a cylindrical rod, the valve rod 4 is in sliding fit in the through hole 3, a sealing groove 5 is arranged at an upper end of the through hole 3, the sealing groove 5 is a conical groove and is located at a middle position, a bump 6 is welded and connected to a side wall of the sealing groove 5, the bump 6 is an annular structure and is located at the middle position, a sealing ring 7 is sleeved in the sealing groove 5, the sealing ring 7 is an annular structure and is made of rubber, a slot 8 is arranged at a lower end face of the sealing ring 7 and is an annular U-shaped slot, the bump 6 is inserted in the slot 8, the valve body is a circular groove and is positioned in the middle, the valve rod 4 penetrates through the placing groove 9, a gasket 10 is placed at the bottom of the placing groove 9, the gasket 10 is an annular gasket and is made of iron, the gasket 10 is sleeved on the valve rod 4, the gasket 10 is positioned above the sealing ring 7, a waterproof layer 11 is paved on the gasket 10, the waterproof layer 11 is nano graphite particles and can be used for placing liquid media to escape from the valve body 1 along the valve rod 4, a pressing block 12 is sleeved on the waterproof layer 11, the pressing block 12 is of a cylindrical structure and is slidably sleeved on the valve rod 4 in a sliding fit manner, an external thread 14 is arranged on the periphery of the upper portion of the valve body 1, a screw cap 13 is sleeved on the upper portion of the valve body 1, an internal thread 15 is arranged in the screw cap 13, the external thread 14 is in threaded connection with the internal thread 15, the external thread 14 is in threaded fit with the internal thread 15 by rotating the screw cap 13, the messenger can be with 11 compactions of waterproof layer according to briquetting 12, and the packing ring 10 of 9 bottoms of fluting can be fixed to the waterproof layer 11 of compaction, and rethread packing ring 10 compresses tightly sealing washer 7 in the seal groove 5, because sealing washer 7 receives decurrent effort, through the conflict of lug 6 in the slot 8, and sealing washer 7 takes place the deformation and seals the gap between perforation 3 and valve rod 4 to can improve the leakproofness of whole device.

Referring to fig. 1, 2, 3, 4 and 6, the upper surface of the screw cap 13 is annularly provided with 4 extrusion holes 27 which are threaded holes, the number of the extrusion holes 28 is two, the bolt two 28 is in threaded fit, the bolt two 28 can press the pressing block 12 downwards by rotating the bolt two 28 with a wrench, the pressing block 12 can always compact the waterproof layer 11, the screw cap 13 is provided with a through hole 16 which is a circular hole and is located at the middle position, the through hole 16 is penetrated with the valve rod 4, the valve rod 4 is in sliding fit with the through hole 16, the upper end of the screw cap 13 is annularly welded and connected with a connecting rod 17 which is a cylindrical rod, the number of the connecting rod is 4, the top of the upper end of the connecting rod 17 is welded and connected with a supporting plate 18 which is a cylindrical plate, the supporting plate 18 is provided with a threaded hole 19, the threaded hole 19 is penetrated with the valve rod 4, the valve rod 4 is located at the threaded hole 19, through rotating the valve rod 4, can make the valve rod 4 move in the screw hole 19 of layer board 18, thereby can adjust the cross-sectional area of case, change the size of valve, the pot head of valve rod 4 is equipped with carousel 20, for circular disk, welded connection has a cover block 21 on the lower terminal surface of carousel 20, cover block 21 is the ring structure, the top at valve rod 4 is put to the cover ring 21 cover, for sliding fit, trompil two 25 is the circular port in the front and back end of lantern ring 21, trompil one 22 has been seted up on the upper portion of valve rod 4, for the circular port, be located the intermediate position, trompil one 22 and trompil two 25 are worn to insert the bolt 23 and are locked with nut 24, because cover block 21 and valve rod 4 are sliding fit, be connected carousel 20 with valve rod 4 through cover block 21, it is tight with nut 23 to use the bolt 23 to alternate in trompil two 25 on cover block 21 and the trompil one 22 on valve, be convenient for disassemble, can avoid receiving external factor influence, with rotatory carousel 20, through two 26 of external screw thread on the valve rod 4 and the 19 screw-thread fit of screw hole on the layer board 18 for valve rod 4 can carry out vertical linear motion, the size of valve in the convenient control choke valve, thereby can be better carry out speed control.

In implementation, the sleeve block 21 is in sliding fit with the valve rod 4, the rotary disc 20 is connected with the valve rod 4 through the sleeve block 21, the first bolt 23 is inserted into the second opening 25 on the sleeve block 21 and the first opening 22 on the valve rod 4 and is locked by the nut 23, so that the rotary disc 20 can drive the valve rod 4 to rotate, disassembly is convenient, and influence from external factors can be avoided, the rotary disc 20 is rotated by hand, the valve rod 4 can perform longitudinal linear motion through the threaded engagement of the second external thread 26 on the valve rod 4 and the threaded hole 19 on the supporting plate 18, the size of a valve in the throttle valve is conveniently controlled, speed adjustment can be better performed, the external thread 14 is in threaded fit with the internal thread 15 through rotating the rotary cover 13, the rotary cover 13 is fixed on the valve body 1, the rotary cover 13 presses the pressing block 12 in the slot 9 downwards, the pressing block 12 can compact the waterproof layer 11, the compacted waterproof layer 11 can fix the gasket 10 at the bottom of the, compress tightly sealing washer 7 in the seal groove 5 through packing ring 10 again, because sealing washer 7 receives decurrent effort, through the conflict of lug 6 in the slot 8, sealing washer 7 takes place the deformation and seals the gap between perforation 3 and valve rod 4 to can improve the leakproofness of whole device, make the speed governing effect can reach better, solve the current not good problem of choke valve speed adjusting device leakproofness.

Claims

1. The utility model provides a throttle valve speed adjusting device, includes valve body (1), its characterized in that: the improved valve is characterized in that a valve cavity (2) is arranged in the valve body (1), a through hole (3) is formed in the upper portion of the valve cavity (2), a valve rod (4) is arranged in the through hole (3) in a penetrating mode, a sealing groove (5) is formed in the through hole (3), a convex block (6) is arranged in the sealing groove (5), a sealing ring (7) is arranged in the sealing groove (5) in a sleeved mode, a slot (8) is formed in the sealing ring (7), the convex block (6) is inserted in the slot (8), a groove (9) is formed in the valve body (1), a gasket (10) is sleeved at the bottom of the groove (9), the gasket (10) is placed on the sealing ring (7), a waterproof layer (11) is arranged on the gasket (10) in a paved on the waterproof layer (11), a pressing block (12) is sleeved on the waterproof layer (11), a rotary cover (13) is arranged, and a second bolt (28) is matched with the internal thread of the extrusion hole (27).

2. A throttle valve timing device as defined in claim 1, wherein: the upper portion of the valve body (1) is provided with a first external thread (14), an internal thread (15) is arranged in the screw cap (13), and the first external thread (14) is in threaded connection with the internal thread (15).

3. A throttle valve timing device as defined in claim 1, wherein: the improved valve is characterized in that a through hole (16) is formed in the rotary cover (13), a valve rod (4) penetrates through the through hole (16), a connecting rod (17) is arranged on the rotary cover (13), a supporting plate (18) is arranged on the connecting rod (17), a threaded hole (19) is formed in the supporting plate (18), the valve rod (4) penetrates through the threaded hole (19), a second external thread (26) is formed in the valve rod (4), and the second external thread (26) is in threaded fit with the threaded hole (19).

4. A throttle valve timing device as defined in claim 1, wherein: the improved valve is characterized in that a rotary disc (20) is sleeved on the valve rod (4), a sleeve block (21) is arranged below the rotary disc (20), a second opening (25) is formed in the sleeve block (21), a first opening (22) is formed in the valve rod (4), and a first bolt (23) is inserted into the first opening (22) and the second opening (25) and locked by a nut (24).