CN115854037A

CN115854037A - Industrial valve

Info

Publication number: CN115854037A
Application number: CN202211093723.1A
Authority: CN
Inventors: 高瑶瑶
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2023-03-28

Abstract

The invention relates to an industrial valve, which comprises a valve body, a valve cover, a valve rod, a valve core, a connecting spring, a sliding seal ring, a valve rod nut, a fixed support rod and a hand wheel, wherein an annular groove can be tightly blocked by matching an elastic rubber sleeve with an annular seal block; after using the valve for a long time, the easy jam of valve rod, inject lubricating oil into this moment in to the oil filler tank, rotate through glossy ball and take out lubricating oil for the valve rod rotates more easily, and the condition that lubricating oil spills over can not take place yet for this kind of structure simultaneously, has the ball cooperation also to make the valve rod rotate easier.

Description

Industrial valve

Technical Field

The invention relates to the technical field of valves, in particular to an industrial valve.

Background

The valve is a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, and has the functions of diversion, cut-off, throttling, check, flow splitting, overflow pressure relief and the like. The valves for controlling fluid are various in variety and specification from the simplest stop valve to the most complicated valves used in the automatic control system, and mainly comprise a valve body, an opening and closing mechanism and a valve cover.

The stop valve is a most widely used cut-off valve in chemical production, and a valve rod is used for driving a circular valve disc (valve head) connected with the stop valve to lift, and the opening and closing of the valve are controlled by changing the distance between the valve disc and a valve seat. Common problems in shut-off valves are: 1. when the stop valve stops the fluid, the valve disc blocks the through hole of the valve seat to realize fluid blocking, but under the thrust action of water, the fluid can seep out from the gap between the valve disc and the valve seat along with the time to cause the internal leakage of the fluid, so that the ideal fluid blocking effect can not be achieved; 2. the valve rod of the stop valve is kept still at the same position for a long time, so that the valve rod is easy to corrode and clamp, and the valve rod cannot be easily rotated when the valve rod needs to be rotated, so that the use is influenced due to unsmooth operation. Aiming at two common problems, the invention improves and designs the structure of the stop valve to a certain extent.

Disclosure of Invention

In order to solve the technical problem, the invention provides an industrial valve.

The utility model provides an industrial valve, includes valve body, valve gap, valve rod, case, coupling spring, slip sealing washer, valve-stem nut, fixed support bar and hand wheel, seted up inlet chamber, export chamber and central through-hole in the valve body, the central through-hole is connecting inlet chamber and export chamber and central through-hole circumference cavity wall and has seted up the annular groove, the valve body upper end is through screw thread post fixedly connected with valve gap, the valve gap middle part rotates and is connected with the valve rod, the valve rod lower extreme just is provided with the case with the cooperation of central through-hole, case upper end fixedly connected with coupling spring and connecting spring cover establish on the valve rod, coupling spring upper end fixedly connected with slip sealing washer, be connected with sliding fit's mode between slip sealing washer and the valve rod, be connected with valve-stem nut with threaded connection's mode on the valve rod, valve-stem nut and the valve gap pass through the fixed support bar fixed connection that bilateral symmetry set up, valve rod upper end fixed mounting has the hand wheel.

The valve core comprises a step valve clack, a hydraulic compression piece, an annular sealing block and a connection fixing block, the lower end of the valve rod is matched with the central through hole to form the step valve clack, a step cylindrical groove is formed in the middle of the lower end of the step valve clack, the hydraulic compression piece is connected in the step cylindrical groove in a sliding fit mode, the annular sealing block is connected at the lower end of the step valve clack in a sliding fit mode, the annular sealing block is in sealing fit with the annular groove, the connection fixing block is evenly arranged on the upper end of the annular sealing block in the circumferential direction, and the connection fixing block is rotatably connected with the hydraulic compression piece.

The first preferred technical scheme is as follows: the hydraulic compression part comprises a floating block, a telescopic connecting rod and a central fixing rod, the floating block is connected in a stepped cylindrical groove in a sliding fit mode, a connecting groove is evenly formed in the circumferential end face of the floating block, the telescopic connecting rod is connected in the connecting groove in a rotating mode, one end, far away from the floating block, of the telescopic connecting rod is connected with a connecting fixing block in a rotating mode, the middle of the telescopic connecting rod is connected with the central fixing rod in a rotating mode, and the central fixing rod is fixedly connected to the stepped valve clack.

The preferred technical scheme is as follows: the oil injection groove has been seted up to valve-stem nut upper end bilateral symmetry, and the upper end is provided with the cylinder stopper in the oil injection groove, and the interior screw thread crest department in the vertical side of valve-stem nut is provided with the external screw thread root recess cooperation of ball and valve rod, has seted up connect the through-hole between ball and the oil injection groove.

The preferred technical scheme is three: the annular sealing block is sleeved with an elastic rubber sleeve in the part protruding out of the step valve clack, and the elastic rubber sleeve is fixedly installed at the lower end of the step valve clack.

The preferable technical scheme is four: the upper end of the sliding seal ring is fixedly provided with an annular rubber pad, and the sliding seal ring needs to shield a joint between the valve body and the valve cover.

The preferred technical scheme is five: the floating block is in a stepped cylinder shape, and the length of a cylinder on the lower side of the floating block needs to be longer than a moving gap reserved on the upper side of a stepped cylinder groove.

The preferred technical scheme is six: an annular stepped gasket is arranged between the stepped valve clack and the central through hole.

The invention has the following beneficial effects: 1. the invention provides an industrial valve which comprises a valve body, a valve cover, a valve rod, a valve core, a connecting spring, a sliding sealing ring, a valve rod nut, a fixed supporting rod and a hand wheel, wherein an annular groove can be tightly blocked by matching an elastic rubber sleeve with an annular sealing block; after using the valve for a long time, the easy card of valve rod is filled in, injects lubricating oil into the oiling groove this moment, rotates through glossy ball and takes out lubricating oil for the valve rod rotates more easily, and the condition that lubricating oil spills over can not take place yet to this kind of structure simultaneously, has the ball cooperation also to make the valve rod rotate easier.

2. According to the hydraulic compressing piece provided by the invention, the floating block is moved upwards by the thrust of fluid to the floating block, the side of the floating block, which is close to the floating block, is driven by the telescopic connecting rod to incline upwards, and the side, which is close to the connecting fixing block, inclines downwards to extrude the annular sealing block to be tightly attached to the annular groove.

3. According to the sliding seal ring, the annular rubber pad is arranged on the upper end face of the sliding seal ring in a matched mode, so that abrasion caused by the fact that the sliding seal ring extrudes the inner end face of the valve cover is avoided, and the sliding seal ring shields the connecting seam between the valve body and the valve cover, so that the condition that leakage possibly occurs between the valve body and the valve cover is avoided.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic structural view of a front plane of the present invention.

Fig. 3 is an enlarged view of the invention at M in fig. 2.

FIG. 4 isbase:Sub>A cross-sectional view taken at A-A of FIG. 3 according to the present invention.

FIG. 5 is a cross-sectional view taken at B-B of FIG. 3 in accordance with the present invention.

FIG. 6 is an enlarged view of the invention at N in FIG. 2.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. a valve core; 41. a step valve flap; 42. a hydraulic compression member; 421. a slider; 422. a telescopic link; 423. a central fixing rod; 43. an annular seal block; 44. connecting a fixed block; 45. an elastic rubber sleeve; 46. an annular stepped shim; 5. a connecting spring; 6. sliding the seal ring; 60. an annular rubber pad; 7. a valve stem nut; 71. a cylindrical plug; 72. a ball bearing; 8. fixing a support frame; 9. a handwheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 and 2, an industrial valve comprises a valve body 1, a valve cover 2, a valve rod 3, a valve core 4, a connecting spring 5, a sliding seal ring 6, a valve rod nut 7, a fixed support frame 8 and a hand wheel 9, wherein an inlet cavity, an outlet cavity and a valve seat through hole are formed in the valve body 1, the valve seat through hole is connected with the inlet cavity and the outlet cavity, an annular groove is formed in the circumferential cavity wall surface of the valve seat through hole, the upper end of the valve body 1 is fixedly connected with the valve cover 2 through a threaded column, the middle of the valve cover 2 is rotatably connected with the valve rod 3, the lower end of the valve rod 3 is provided with the valve core 4 in a matched manner with the valve seat through hole, the upper end of the valve core 4 is fixedly connected with the connecting spring 5, the connecting spring 5 is sleeved on the valve rod 3, the sliding seal ring 6 is fixedly connected with the valve rod 3 in a sliding fit manner, the valve rod nut 7 is connected with the valve rod 3 in a threaded manner, the valve rod nut 7 is fixedly connected with the fixed support frame 8 which is symmetrically arranged with the valve rod nut 2, and the hand wheel 9 is fixedly arranged at the upper end of the valve rod 3.

The workman is at first with the entrance chamber and the export chamber of valve body 1 respectively with fluid import pipe and fluid outlet pipe respectively fixed connection well, later through rotating hand wheel 9 control valve rod 3 direction rotation for case 4 and the sealed jam of disk seat through-hole realize ending to the fluid, and the reverse rotation makes case 4 and the separation of disk seat through-hole realize fluidic circulation smoothly.

Referring to fig. 2, 3, 4 and 5, the valve core 4 includes a step valve clack 41, a hydraulic compressing element 42, an annular sealing block 43 and a connecting fixing block 44, the step valve clack 41 is disposed at the lower end of the valve rod 3 and matched with the valve seat through hole, a step cylindrical groove is disposed in the middle of the lower end of the step valve clack 41, the hydraulic compressing element 42 is connected in the step cylindrical groove in a sliding fit manner, the annular sealing block 43 is connected at the lower end of the step valve clack 41 in a sliding fit manner, the annular sealing block 43 is in sealing fit with the annular groove, the connecting fixing block 44 is uniformly arranged at the upper end of the annular sealing block 43 in the circumferential direction, and the connecting fixing block 44 is rotatably connected with the hydraulic compressing element 42; when the fluid is cut off, the hydraulic pressing piece 42 acts on the connecting fixing block 44 by utilizing the thrust of the fluid to the hydraulic pressing piece 42, and then the annular sealing block 43 is pressed down to be tightly matched with the annular groove to prevent the fluid from leaking.

Referring to fig. 2, 3 and 4, the hydraulic compressing element 42 includes a floating block 421, a telescopic link 422 and a central fixing rod 423, the floating block 421 is connected in a sliding fit manner in a stepped cylindrical groove, a connecting groove is uniformly formed in the circumferential end surface of the floating block 421, the telescopic link 422 is rotatably connected in the connecting groove, one end of the telescopic link 422, which is far away from the floating block 421, is rotatably connected with a connecting fixing block 44, the middle part of the telescopic link 422 is rotatably connected with the central fixing rod 423, and the central fixing rod 423 is fixedly connected to the stepped valve flap 41; the slider 421 is moved upwards by the thrust of fluid to the slider 421, and the slider 421 with the telescopic connecting rod 422 inclines upwards at the side close to the slider 421, and inclines downwards at the side close to the connecting fixed block 44 to press the annular sealing block 43 to be tightly attached to the annular groove.

Referring to fig. 2 and 6, oil injection grooves are symmetrically formed in the left and right of the upper end of the valve rod nut 7, a cylindrical plug 71 is arranged at the inner upper end of each oil injection groove, a ball 72 is arranged at the crest of an internal thread in the vertical direction of the valve rod nut 7, the ball 72 is matched with a groove in the bottom of an external thread of the valve rod 3, and a connecting through hole is formed between the ball 72 and the oil injection grooves; after using the valve for a long time, the easy card of valve rod 3 is filled in, injects lubricating oil into the oiling groove this moment, rotates through glossy ball 72 and takes away lubricating oil for valve rod 3 rotates more easily, and the condition that lubricating oil spills over can not take place yet to this kind of structure simultaneously, has the cooperation of ball 72 also to make valve rod 3 rotate easier.

Referring to fig. 2, 3 and 5, the portion of the annular sealing block 43 protruding from the step valve flap 41 is sleeved with an elastic rubber sleeve 45, and the elastic rubber sleeve 45 is fixedly installed at the lower end of the step valve flap 41; the annular groove can be tightly blocked by matching the elastic rubber sleeve 45 with the annular sealing block 43, and the elastic rubber sleeve 45 is deformed under pressure to be tightly attached to the wall surface of the annular groove by matching with the hydraulic pressing piece 42 by utilizing the thrust of water, so that the problem that fluid leakage is easy to occur between the valve core 4 and the valve seat through hole is solved.

Referring to fig. 2, an annular rubber gasket 60 is fixedly installed at the upper end of the sliding seal ring 6, and the sliding seal ring 6 is required to shield a seam between the valve body 1 and the valve cover 2; thereby avoided sliding seal 6 extrusion valve gap 2 inner end face to cause wearing and tearing through ring rubber pad 60, further avoided taking place the condition emergence of revealing between valve body 1 and the valve gap 2 through sliding seal 6.

Referring to fig. 2 and 3, the slider 421 is a stepped cylinder, and the length of the lower cylinder is longer than the moving gap of the upper side of the stepped cylinder.

Referring to fig. 2 and 3, an annular step gasket 46 is disposed between the step valve flap 41 and the valve seat through hole.

The concrete during operation: after the valve is installed in a connecting pipeline, the valve core 4 is controlled by rotating the hand wheel 9 to realize the circulation or the cut-off of fluid, when the valve is in a cut-off state, the floating block 421 is pushed by the fluid to rise to drive the telescopic connecting rod 422 to rotate for a certain angle, so that the annular sealing block 43 is extruded, the elastic rubber sleeve 45 is closely attached in the annular groove, the sealing of the fluid on-off position can be effectively realized, and meanwhile, the arranged sliding sealing ring 6 plays a further role in preventing leakage for the sealing between the valve cover 2 and the valve body 1; when the valve rod 3 is not rotated smoothly, lubricating oil can be injected into the oil injection groove, the valve rod 3 is rotated slowly, and the lubricating oil is enabled to lubricate the valve rod 3 through the matching rotation of the ball 72 so as to facilitate the rotation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an industrial valve, includes valve body (1), valve gap (2), valve rod (3), case (4), coupling spring (5), slip sealing washer (6), valve-stem nut (7), fixed stay frame (8) and hand wheel (9), its characterized in that: set up the entrance chamber in valve body (1), export chamber and disk seat through-hole, the disk seat through-hole is being connected entrance chamber and export chamber and disk seat through-hole circumference cavity wall and has seted up annular groove, valve body (1) upper end is through screw thread post fixedly connected with valve gap (2), valve gap (2) middle part is rotated and is connected with valve rod (3), valve rod (3) lower extreme and be provided with case (4) with the cooperation of disk seat through-hole, case (4) upper end fixedly connected with coupling spring (5) and coupling spring (5) cover are established on valve rod (3), coupling spring (5) upper end fixedly connected with sliding seal circle (6), be connected with sliding fit's mode between sliding seal circle (6) and valve rod (3), be connected with valve rod nut (7) with threaded connection's mode on valve rod (3), fixed support frame (8) fixed connection that valve rod nut (7) and valve gap (2) set up through the bilateral symmetry, valve rod (3) upper end fixed mounting has hand wheel (9), wherein:

the valve core (4) comprises a step valve clack (41), a hydraulic compression piece (42), an annular sealing block (43) and a connection fixing block (44), the step valve clack (41) is arranged at the lower end of the valve rod (3) and matched with the valve seat through hole, a step cylindrical groove is formed in the middle of the lower end of the step valve clack (41), the hydraulic compression piece (42) is connected in the step cylindrical groove in a sliding fit mode, the annular sealing block (43) is connected at the lower end of the step valve clack (41) in a sliding fit mode, the annular sealing block (43) is in sealing fit with the annular groove, the connection fixing block (44) is uniformly arranged at the upper end of the annular sealing block (43) in the circumferential direction, and the connection fixing block (44) is rotationally connected with the hydraulic compression piece (42).

2. An industrial valve as claimed in claim 1 wherein: waterpower compression member (42) are including slider (421), scalable connecting rod (422) and central dead lever (423), be connected with slider (421) with sliding fit's mode in the ladder cylinder inslot, the spread groove has evenly been seted up to slider (421) circumference terminal surface, the spread groove internal rotation is connected with scalable connecting rod (422), the one end rotation that slider (421) were kept away from in scalable connecting rod (422) is connected with connection fixed block (44), scalable connecting rod (422) middle part rotation is connected with central dead lever (423), central dead lever (423) fixed connection is on ladder valve clack (41).

3. An industrial valve as claimed in claim 1 wherein: the oil injection groove is symmetrically formed in the left and right of the upper end of the valve rod nut (7), the cylindrical plug (71) is arranged at the upper end in the oil injection groove, the ball (72) is arranged at the top of an internal thread tooth in the vertical direction of the valve rod nut (7), the ball (72) is matched with an external thread tooth bottom groove of the valve rod (3), and a connecting through hole is formed between the ball (72) and the oil injection groove.

4. An industrial valve as claimed in claim 1 wherein: the part of the annular sealing block (43) protruding out of the step valve clack (41) is sleeved with an elastic rubber sleeve (45), and the elastic rubber sleeve (45) is fixedly installed at the lower end of the step valve clack (41).

5. An industrial valve as claimed in claim 1 wherein: the upper end of the sliding seal ring (6) is fixedly provided with an annular rubber pad (60), and the sliding seal ring (6) needs to shield a seam between the valve body (1) and the valve cover (2).

6. An industrial valve as claimed in claim 2 wherein: the floating block (421) is in a step cylinder shape, and the length of the cylinder at the lower side of the floating block is longer than the moving gap reserved at the upper side of the step cylinder groove.

7. An industrial valve as claimed in claim 1 wherein: an annular stepped gasket (46) is arranged between the stepped valve clack (41) and the valve seat through hole.