CN116336197B

CN116336197B - Wear-resistant throttle valve and application method thereof

Info

Publication number: CN116336197B
Application number: CN202310598088.0A
Authority: CN
Inventors: 陈庭威; 洪晋姚; 张磊; 洪晋福
Original assignee: Huaying Valve Industry Co ltd
Current assignee: Huaying Valve Industry Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-07-28
Anticipated expiration: 2043-05-25
Also published as: CN116336197A

Abstract

The invention discloses a wear-resistant throttle valve and a use method thereof, and relates to the technical field of valves, wherein the wear-resistant throttle valve comprises a valve body, an opening and closing mechanism is arranged on the valve body, a liquid inlet pipe is arranged at one end of the valve body, a clamping joint is arranged at the end part of the liquid inlet pipe, a first channel, a middle channel and a second channel are continuously arranged at the middle part of the valve body, the first channel and the second channel are respectively and vertically connected with the two ends of the middle channel, the middle channel is vertically arranged between the central axis of the middle channel and the central axis of the valve body, the middle channel is connected with the opening and closing mechanism, an inserting joint is arranged at one end of the valve body far away from the liquid inlet pipe, an intermediate sleeve is connected with the inserting joint, a connecting sleeve is arranged on the intermediate sleeve, and the inserting joint is in sealed connection with a connecting pipe through the intermediate sleeve and the locking and connecting mechanism; the invention realizes the quick locking and sealing connection and disconnection between the valve body and the connecting pipe through the locking and connecting mechanism, is convenient for the positioning and maintenance operation of the connecting part of the valve and prevents the occurrence of medium leakage due to rust.

Description

Wear-resistant throttle valve and application method thereof

Technical Field

The invention relates to the technical field of valves, in particular to a wear-resistant throttle valve and a use method thereof.

Background

The existing throttle valve mainly has two types, one is rotary type and the other is sliding type, and the main function of the throttle valve is to control the flow rate and the flow velocity of fluid passing through the throttle valve, namely, fluid (such as water, oil, steam and the like) flows in from one inlet of the throttle valve, passes through a valve seat opening and flows out from the other outlet, and in the process, the lifting and opening of the valve plate plays a role in adjusting the flow rate and the flow velocity.

The existing multistage throttle valve is connected with a pipeline by using a flange, and the flange is connected with water stains for a long time to generate a rust phenomenon, so that the connection between the flange and the pipeline is unstable, and leakage is easy to occur.

Disclosure of Invention

The invention aims to provide a wear-resistant throttle valve and a use method thereof, so as to solve the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the utility model provides a wear-resisting choke valve, includes the valve body, be provided with opening and closing mechanism on the valve body, the one end of valve body is provided with the feed liquor pipe, the tip of feed liquor pipe is provided with the joint, the middle part of valve body is provided with first passageway, middle passageway, second passageway in succession, first passageway and second passageway are connected perpendicularly with the both ends of middle passageway respectively, install perpendicularly between middle passageway and the central axis that the valve body is located, middle passageway links to each other with opening and closing mechanism, the one end that the feed liquor pipe was kept away from to the valve body is provided with the bayonet joint, the bayonet joint is connected with the intermediate sleeve, be provided with the adapter sleeve on the intermediate sleeve, be provided with locking coupling mechanism in the intermediate sleeve, the bayonet joint passes through intermediate sleeve and locking coupling mechanism and connecting tube sealing connection.

The locking coupling mechanism is including setting up the shrink section towards valve body one side at the connecting pipe, be provided with the locking frame on the shrink section, fixed connection between locking frame and the shrink section, the end of shrink section is provided with the butt joint, be provided with sealing washer on the butt joint, be provided with the packing ring groove on the butt joint of valve body and butt joint, the packing ring groove is mutually supported with sealing washer, the inner circle grafting of middle cover has the spliced pole, be provided with the sliding ball on the spliced pole, mutually support between sliding ball and the locking frame, the one end that the sliding ball was kept away from to the spliced pole is provided with the wedge, the spliced pole has been cup jointed in the outside of adapter sleeve inner circle and has been pushed up tight spring, the outer lane cooperation of wedge is provided with compressing tightly the subassembly.

As a further scheme of the invention: the compression assembly comprises a threaded connecting rod connected with a middle sleeve, an inserting groove is formed in the middle sleeve, a pressing ring is sleeved in the inserting groove, the inner ring of the pressing ring is matched with the wedge surface of the wedge block, a threaded groove is formed in the pressing ring, an inner hexagon nut is arranged on the threaded connecting rod, the inner hexagon nut is matched with the connecting sleeve, an inserting groove is formed in the middle sleeve, and the threaded connecting rod penetrates through the inserting groove and is in threaded connection with the threaded groove.

As still further aspects of the invention: the end of the valve body is provided with a plug connector, the plug connector is matched with the plug groove, the plug connector is provided with a locking hole, the middle sleeve is provided with a threaded pin on the upper side of the plug groove, and the threaded pin is matched with the locking hole in an aligning manner after the plug connector is matched with the plug groove.

As still further aspects of the invention: the plug is characterized in that a positioning lug is arranged on the plug, and a positioning groove matched with the positioning lug is formed in the end part of the plug groove.

As still further aspects of the invention: the connecting sleeve and the middle sleeve are slidably mounted, a locking butt joint hole is formed in the middle sleeve, an opening of the locking butt joint hole is opened, a locking rod is inserted into the connecting sleeve, a limit ring is arranged on the middle sleeve, and when the end part of the connecting sleeve is in contact with the limit ring, the locking rod is mutually aligned and matched with the locking butt joint hole.

As still further aspects of the invention: the connecting spring is arranged between the plug connector and the pressing ring, the middle of the locking frame is provided with an inwards concave locking groove, two sides of the locking groove are provided with second arc-shaped surfaces, the second arc-shaped surfaces are in transitional connection with first arc-shaped surfaces, and the first arc-shaped surfaces are in smooth transitional connection with the contraction section.

As still further aspects of the invention: the opening and closing mechanism comprises a mounting sleeve arranged on the valve body, the mounting sleeve is vertically arranged between the mounting sleeve and the valve body, a placing cavity is formed in the mounting sleeve, the placing cavity is communicated with the middle channel and coaxially arranged, a threaded lifting rod is inserted into the placing cavity, a sealing rod is arranged at the bottom of the threaded lifting rod, the sealing rod is matched with the middle channel, a sealing ring is arranged at the connecting part of the threaded lifting rod and the sealing rod, the sealing ring is in sealing connection with the placing cavity, a stepped groove is formed in the top of the mounting sleeve, a threaded sleeve is arranged in the stepped groove, the threaded sleeve is in threaded connection with the threaded lifting rod, a sealing cap is sleeved on the mounting sleeve and the threaded sleeve, the sealing cap is fixedly connected with the mounting sleeve through a threaded column, and a connecting column is arranged on the upper side of the threaded lifting rod and is connected with a rotating handle.

The application method of the wear-resistant throttle valve comprises the following steps:

s1, before the throttle valve is installed in the middle of a pipeline, firstly, rotating a closing rod of the throttle valve to the lowest point, closing the throttle valve, sleeving a middle sleeve on a connecting pipe, enabling a plug connector to be matched with a plug groove of the middle sleeve, sealing and butting the plug connector with the end part of a valve body, and locking and connecting the middle sleeve with the plug connector through a threaded pin;

s2, the valve body and the middle sleeve are slidably mounted on the connecting pipe, so that the sliding ball is matched with the locking frame on the contraction section, the position of the threaded connecting rod on the connecting sleeve is adjusted, the threaded connecting rod is connected with the threaded groove, the connecting sleeve is slid, the pressing ring is pressed on the wedge-shaped block, and the matched locking between the sliding ball and the locking frame is completed;

and S3, connecting one end of the valve body, which is close to the liquid inlet pipe, with the pipeline through a clamping joint, rotating the threaded lifting rod, opening the middle channel of the valve body, and communicating the pipeline.

Compared with the prior art, the invention has the beneficial effects that:

(1) One end of the valve body is in sealing connection with the pipeline through the clamping connector, a first channel, a middle channel and a second channel are arranged in the valve body, an opening and closing mechanism is arranged through the middle channel, opening and closing of the valve body are achieved, meanwhile, the other end of the valve body is provided with the inserting connector, the inserting connector is combined with the middle sleeve and the connecting pipe in sealing connection, and quick connection and disassembly overhaul between the valve body and the pipeline are achieved.

(2) The shrink section of connecting pipe is last to set up the locking frame, and the cooperation intermediate sleeve sets up plug rod and sliding ball, combines the mutually supporting of sliding ball and locking frame, realizes the location installation to intermediate sleeve, and then accomplishes the whole and the connecting pipe locking of valve body and intermediate sleeve and be connected, presses on the wedge through compressing tightly the subassembly, avoids plug rod and wedge to rise and drives the sliding ball and break away from the locking frame to guarantee the locking state, wherein the setting of tight spring in top makes the sliding ball contact each other between can all the time and the locking frame and cooperates. The connecting sleeve is arranged on the middle sleeve, the threaded connecting rod is installed on the connecting sleeve, the pressing ring inside the inserting groove is connected, the connecting sleeve is driven to slide back and forth in the inserting groove when the connecting sleeve is sleeved in the middle, the pressing ring and the wedge block are matched or separated, and the locking state of the sliding ball and the locking frame is switched back and forth.

(3) The connecting spring is arranged between the plug and the pressing ring, two ends of the connecting spring are fixedly connected with the plug and the pressing ring respectively, and after the locking rod is separated from the locking butt joint hole, the pressing ring automatically retreats under the pulling of the connecting spring to release the pressing locking of the wedge block.

Drawings

FIG. 1 is a schematic illustration of a cut-away structure of a wear-resistant throttle valve.

Fig. 2 is a schematic structural view of a wear-resistant throttle valve.

FIG. 3 is a schematic diagram of a connection structure between an opening and closing mechanism and a valve body in a wear-resistant throttle valve.

Fig. 4 is an enlarged schematic view of the structure of fig. 3 at a.

FIG. 5 is a schematic diagram of a locking connection and connecting tube in a wear-resistant throttle valve.

FIG. 6 is a schematic diagram of a connection structure between an end of a valve body and an intermediate sleeve in a wear-resistant throttle valve.

Fig. 7 is a schematic structural view of an intermediate sleeve in a wear-resistant throttle valve.

Fig. 8 is a schematic structural view of a locking connection mechanism in a wear-resistant throttle valve.

Fig. 9 is a schematic view showing a sectional structure of a locking frame in a wear-resistant throttle valve.

In the figure: 1. a valve body; 10. a liquid inlet pipe; 11. a clamping joint; 12. a first channel; 13. an intermediate channel; 14. a second channel; 15. a plug; 150. a locking hole; 151. positioning the protruding blocks; 16. a gasket groove; 2. an opening and closing mechanism; 20. a closing rod; 21. a mounting sleeve; 22. a placement cavity; 23. a seal ring; 24. a threaded lifting rod; 26. a thread sleeve; 27. a sealing cap; 28. a threaded column; 29. a connecting column; 210. a stepped groove; 3. a middle sleeve; 30. locking the butt joint hole; 31. a plug-in groove; 32. a threaded pin; 33. a positioning groove; 34. an insertion groove; 35. a limit ring; 4. connecting sleeves; 40. a threaded connecting rod; 41. an inner hexagon nut; 42. a locking lever; 5. a locking connection mechanism; 50. a locking frame; 500. a locking groove; 501. a first arcuate surface; 502. a second arcuate surface; 51. inserting a connecting rod; 52. wedge blocks; 53. a sliding ball; 54. a spring is tightly propped; 55. pressing the ring; 56. a thread groove; 57. a connecting spring; 6. a connecting pipe; 60. a constriction section; 61. butt joint; 62. and a sealing gasket.

Detailed Description

In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The technical scheme of the invention is further described in detail below with reference to the specific embodiments.

Example 1:

as shown in fig. 1, fig. 2 and fig. 3, the wear-resistant throttle valve comprises a valve body 1, an opening and closing mechanism 2 is arranged on the valve body 1, a liquid inlet pipe 10 is arranged at one end of the valve body 1, a clamping joint 11 is arranged at the end part of the liquid inlet pipe 10, a first channel 12, a middle channel 13 and a second channel 14 are continuously arranged at the middle part of the valve body 1, the first channel 12 and the second channel 14 are respectively and vertically connected with two ends of the middle channel 13, the middle channel 13 is vertically arranged between the central axis of the middle channel 13 and the central axis of the valve body 1, the middle channel 13 is connected with the opening and closing mechanism 2, an inserting joint 15 is arranged at one end, far away from the liquid inlet pipe 10, of the valve body 1, a middle sleeve 3 is connected with the inserting joint 15, a connecting sleeve 4 is arranged on the middle sleeve 3, a locking connecting mechanism 5 is arranged in the middle sleeve 3, and the inserting joint 15 is in sealing connection with the connecting pipe 6 through the middle sleeve 3 and the locking connecting mechanism 5.

Specifically, one end of the valve body 1 is in sealing connection with the pipeline through the clamping connector 11, a first channel 12, a middle channel 13 and a second channel 14 are arranged in the valve body 1, the opening and closing mechanism 2 is installed through the middle channel 13, the opening and closing of the valve body 1 are achieved, meanwhile, the other end of the valve body 1 is provided with the inserting connector 15, the inserting connector 15 is combined with the middle sleeve 3 and the connecting pipe 6 in sealing connection, and the quick connection and the split maintenance between the valve body 1 and the pipeline are achieved.

As shown in fig. 6, 7 and 8, the locking connection mechanism 5 includes a contraction section 60 disposed at one side of the connection pipe 6 facing the valve body 1, a locking frame 50 is disposed on the contraction section 60, the locking frame 50 is fixedly connected with the contraction section 60, a butt joint 61 is disposed at an end of the contraction section 60, a sealing gasket 62 is disposed on the butt joint 61, a gasket groove 16 is disposed at a butt joint position between the valve body 1 and the butt joint 61, the gasket groove 16 is mutually matched with the sealing gasket 62, an inner ring of the middle sleeve 3 is inserted with an insertion rod 51, a sliding ball 53 is disposed on the insertion rod 51, the sliding ball 53 is mutually matched with the locking frame 50, a wedge block 52 is disposed at an end of the insertion rod 51 far away from the sliding ball 53, a tightening spring 54 is sleeved on an outer side of an inner ring of the connection sleeve 4, and a compression assembly is cooperatively disposed on an outer ring of the wedge block 52.

Specifically, set up locking frame 50 on the shrink section 60 of connecting pipe 6, cooperation intermediate sleeve 3 sets up plug rod 51 and sliding ball 53, combine the mutually supporting of sliding ball 53 and locking frame 50, realize the location installation to intermediate sleeve 3, and then accomplish the whole of valve body 1 and intermediate sleeve 3 and connecting pipe 6 locking connection, press on wedge 52 through compressing tightly the subassembly, avoid plug rod 51 and wedge 52 to rise and drive sliding ball 53 and break away from locking frame 50, thereby guarantee locking state, wherein the setting of tight spring 54 in top makes sliding ball 53 can contact the cooperation each other between the locking frame 50 all the time.

Example 2:

this example is a further improvement and definition of example 1 based on example 1.

Including all of the components of embodiment 1, further including:

further, as shown in fig. 6, the compressing assembly includes a threaded connecting rod 40 connected with the middle sleeve 3, an inserting groove 31 is provided in the middle sleeve 3, a pressing ring 55 is sleeved in the inserting groove 31, an inner ring of the pressing ring 55 is matched with a wedge surface of the wedge block 52, a threaded groove 56 is provided on the pressing ring 55, a socket cap nut 41 is provided on the threaded connecting rod 40, the socket cap nut 41 is matched with the connecting sleeve 4, an inserting groove 34 is provided on the middle sleeve 3, and the threaded connecting rod 40 passes through the inserting groove 34 and is connected with the threaded groove 56 in a threaded manner.

Specifically, the connecting sleeve 4 is arranged on the middle sleeve 3, the threaded connecting rod 40 is installed by using the connecting sleeve 4, the pressing ring 55 in the inserting groove 31 is connected, when the connecting sleeve 4 is driven to slide on the middle sleeve 3, the pressing ring 55 can slide back and forth in the inserting groove 31, the pressing ring 55 and the wedge-shaped block 52 are matched or separated, and the locking state of the sliding ball 53 and the locking frame 50 is switched back and forth.

Further, as shown in fig. 5 and 6, the end of the valve body 1 is provided with a plug 15, the plug 15 is matched with the plug slot 31, the plug 15 is provided with a locking hole 150, the middle sleeve 3 is provided with a threaded pin 32 on the upper side of the plug slot 31, and the plug 15 is matched with the plug slot 31, and then the threaded pin 32 is matched with the locking hole 150 in a mutually aligned manner. The plug 15 is provided with a positioning bump 151, and the end of the plug slot 31 is provided with a positioning slot 33 which is matched with the positioning bump 151.

Specifically, the middle sleeve 3 is provided with the positioning groove 33 at the end of the plugging groove 31, and meanwhile, the tail of the plug 15 is provided with the positioning protruding block 151, so that when the plug 15 is matched with the plugging groove 31, the mutual matching between the positioning protruding block 151 and the positioning groove 33 can avoid the relative rotation between the middle sleeve 3 and the plug 15.

Further, as shown in fig. 6, the connecting sleeve 4 is slidably mounted between the middle sleeve 3, a locking butt joint hole 30 is provided in the middle sleeve 3, an opening of the locking butt joint hole 30 is opened, a locking rod 42 is inserted into the connecting sleeve 4, a limit ring 35 is provided on the middle sleeve 3, and when an end portion of the connecting sleeve 4 contacts with the limit ring 35, the locking rod 42 and the locking butt joint hole 30 are aligned with each other.

Specifically, the connecting sleeve 4 completes the locking switching operation through the locking lever 42 and the locking butt hole 30 provided on the intermediate sleeve 3.

Further, as shown in fig. 8 and 9, a connection spring 57 is disposed between the plug 15 and the pressing ring 55, an inward concave locking groove 500 is disposed in the middle of the locking frame 50, two second arcuate surfaces 502 are disposed on two sides of the locking groove 500, the second arcuate surfaces 502 are in transitional connection with a first arcuate surface 501, and a smooth transitional connection between the first arcuate surface 501 and the contraction section 60 is provided.

Specifically, a connection spring 57 is disposed between the plug 15 and the pressing ring 55, wherein two ends of the connection spring 57 are fixedly connected with the plug 15 and the pressing ring 55 respectively, and when the locking rod 42 is separated from the locking butt hole 30, the pressing ring 55 automatically retreats under the pulling of the connection spring 57 to release the pressing locking of the wedge block 52.

Example 3:

this example is a further improvement and limitation made on the basis of example 1 and example 2.

Including all the components in embodiment 1 and embodiment 2, further including:

further, as shown in fig. 3 and 4, the opening and closing mechanism 2 includes a mounting sleeve 21 disposed on the valve body 1, the mounting sleeve 21 is vertically mounted with the valve body 1, a placement cavity 22 is disposed in the mounting sleeve 21, the placement cavity 22 is communicated with the middle channel 13 and coaxially disposed, a threaded lifting rod 24 is inserted into the placement cavity 22, a sealing rod 20 is disposed at the bottom of the threaded lifting rod 24, the sealing rod 20 is matched with the middle channel 13, a sealing ring 23 is disposed at a connection position of the threaded lifting rod 24 and the sealing rod 20, the sealing ring 23 is in sealing connection with the placement cavity 22, a stepped groove 210 is disposed at the top of the mounting sleeve 21, a threaded sleeve 26 is disposed in the stepped groove 210, the threaded sleeve 26 is in threaded connection with the threaded lifting rod 24, a sealing cap 27 is sleeved on the mounting sleeve 21 and the threaded sleeve 26, the sealing cap 27 is fixedly connected with the mounting sleeve 21 through a threaded column 28, a connecting column 29 is disposed at the upper side of the threaded lifting rod 24, and the connecting column 29 is connected with a rotating handle.

Specifically, a stepped groove 210 is formed in the top of the mounting sleeve 21, the threaded sleeve 26 is mounted, meanwhile, the sealing cap 27, the mounting sleeve 21 and the threaded sleeve 26 are connected in a locking mode through a threaded column 28, and the rotating handle drives the threaded lifting rod 24 to rotate and lift when rotating, so that the sealing rod 20 ascends or descends, and the valve body 1 is opened or closed.

s1, before the throttle valve is installed in the middle of a pipeline, firstly, a closing rod 20 of the throttle valve is rotated to the lowest point, the throttle valve is closed, a middle sleeve 3 is sleeved on a connecting pipe 6, a plug connector 15 is matched with a plug groove 31 of the middle sleeve 3, meanwhile, a butt joint 61 is in sealing butt joint with the end part of a valve body 1, and the middle sleeve 3 is in locking connection with the plug connector 15 through a threaded pin 32;

s2, the valve body 1 and the middle sleeve 3 are slidably mounted on the connecting pipe 6, so that the sliding ball 53 is matched with the locking frame 50 on the contraction section 60, the position of the threaded connecting rod 40 on the connecting sleeve 4 is adjusted, the threaded connecting rod 40 is connected with the threaded groove 56, the connecting sleeve 4 is slid, the pressing ring 55 is pressed on the wedge-shaped block 52, and the matched locking between the sliding ball 53 and the locking frame 50 is completed;

and S3, connecting one end of the valve body 1, which is close to the liquid inlet pipe 10, with a pipeline through a clamping connector 11, rotating a threaded lifting rod 24, opening an intermediate channel 13 of the valve body 1, and communicating the pipeline.

The working principle of the embodiment of the invention is as follows:

as shown in fig. 1-9, one end of the valve body 1 is in sealing connection with a pipeline through a clamping connector 11, a first channel 12, a middle channel 13 and a second channel 14 are arranged in the valve body 1, an opening and closing mechanism 2 is arranged through the middle channel 13, so that the valve body 1 is opened and closed, meanwhile, an inserting connector 15 is arranged at the other end of the valve body 1, and the quick connection and disassembly overhaul between the valve body 1 and the pipeline are realized by combining the inserting connector 15 with the middle sleeve 3 and the connecting pipe 6 in sealing connection. The locking frame 50 is arranged on the contraction section 60 of the connecting pipe 6, the inserting connection rod 51 and the sliding ball 53 are arranged in cooperation with the middle sleeve 3, the sliding ball 53 is combined with the locking frame 50 to be matched with each other, the positioning and the installation of the middle sleeve 3 are achieved, the whole of the valve body 1 and the middle sleeve 3 is further connected with the connecting pipe 6 in a locking mode, the pressing assembly is pressed on the wedge-shaped block 52, the inserting connection rod 51 and the wedge-shaped block 52 are prevented from being lifted to drive the sliding ball 53 to be separated from the locking frame 50, the locking state is guaranteed, and the sliding ball 53 can be always contacted with the locking frame 50 in a mutual contact mode through the arrangement of the jacking spring 54. The connecting sleeve 4 is arranged on the middle sleeve 3, the threaded connecting rod 40 is installed by the connecting sleeve 4, the pressing ring 55 in the inserting groove 31 is connected, when the connecting sleeve 4 is driven to slide on the middle sleeve 3, the pressing ring 55 can slide back and forth in the inserting groove 31, the pressing ring 55 and the wedge-shaped block 52 are matched or separated, and the locking state of the sliding ball 53 and the locking frame 50 is switched back and forth. The middle sleeve 3 is provided with the positioning groove 33 at the end part of the inserting groove 31, and meanwhile, the tail part of the inserting head 15 is provided with the positioning protruding block 151, and after the inserting head 15 is matched with the inserting groove 31, the mutual matching between the positioning protruding block 151 and the positioning groove 33 can avoid the relative rotation between the middle sleeve 3 and the inserting head 15. The connecting sleeve 4 completes the locking switching operation through the locking lever 42 and the locking butt hole 30 provided on the intermediate sleeve 3. A connecting spring 57 is arranged between the plug 15 and the pressing ring 55, wherein two ends of the connecting spring 57 are fixedly connected with the plug 15 and the pressing ring 55 respectively, and when the locking rod 42 is separated from the locking butt joint hole 30, the pressing ring 55 automatically retreats under the pulling of the connecting spring 57 to release the pressing locking of the wedge-shaped block 52. The top of the installation sleeve 21 is provided with a stepped groove 210 for installing the threaded sleeve 26, and meanwhile, the sealing cap 27, the installation sleeve 21 and the threaded sleeve 26 are in locking connection through the threaded column 28, and the rotating handle drives the threaded lifting rod 24 to rotate and lift when rotating, so that the sealing rod 20 ascends or descends, and the valve body 1 is opened or closed.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a wear-resisting choke valve, includes valve body (1), its characterized in that, be provided with opening and closing mechanism (2) on valve body (1), the one end of valve body (1) is provided with feed liquor pipe (10), the tip of feed liquor pipe (10) is provided with joint (11), the middle part of valve body (1) is provided with first passageway (12), intermediate channel (13), second passageway (14) in succession, first passageway (12) and second passageway (14) are connected perpendicularly with the both ends of intermediate channel (13) respectively, install perpendicularly between the central axis at intermediate channel (13) and valve body (1) place, intermediate channel (13) link to each other with opening and closing mechanism (2), the one end that feed liquor pipe (10) was kept away from to valve body (1) is provided with plug connector (15), plug connector (15) are connected with intermediate sleeve (3), be provided with adapter sleeve (4) on intermediate sleeve (3), be provided with locking coupling mechanism (5) in intermediate sleeve (3), plug connector (15) are connected with connecting pipe (6) through intermediate sleeve (3) and locking mechanism (6) seal;

the locking connecting mechanism (5) comprises a contraction section (60) arranged on one side of the connecting pipe (6) towards the valve body (1), a locking frame (50) is arranged on the contraction section (60), the locking frame (50) is fixedly connected with the contraction section (60), a butt joint head (61) is arranged at the tail end of the contraction section (60), a sealing gasket (62) is arranged on the butt joint head (61), a gasket groove (16) is formed in the butt joint position of the valve body (1) and the butt joint head (61), the gasket groove (16) is matched with the sealing gasket (62), an inserting rod (51) is inserted into an inner ring of the middle sleeve (3), a sliding ball (53) is arranged on the inserting rod (51), the sliding ball (53) is matched with the locking frame (50), a wedge block (52) is arranged at one end of the inserting rod (51) far away from the sliding ball (53), a tightening spring (54) is sleeved on the outer side of the inner ring of the connecting sleeve (4), and a compression assembly is arranged on the outer ring of the wedge block (52).

2. The wear-resistant throttle valve according to claim 1, wherein the compression assembly comprises a threaded connecting rod (40) connected with an intermediate sleeve (3), an inserting groove (31) is formed in the intermediate sleeve (3), a pressing ring (55) is sleeved in the inserting groove (31), an inner ring of the pressing ring (55) is matched with a wedge surface of a wedge block (52), a threaded groove (56) is formed in the pressing ring (55), an inner hexagon nut (41) is arranged on the threaded connecting rod (40), the inner hexagon nut (41) is matched with a connecting sleeve (4), an inserting groove (34) is formed in the intermediate sleeve (3), and the threaded connecting rod (40) penetrates through the inserting groove (34) and is in threaded connection with the threaded groove (56).

3. The wear-resistant throttle valve according to claim 2, characterized in that the end part of the valve body (1) is provided with a plug connector (15), the plug connector (15) is mutually matched with the plug groove (31), the plug connector (15) is provided with a locking hole (150), the middle sleeve (3) is provided with a threaded pin (32) on the upper side of the plug groove (31), and the plug connector (15) is mutually matched with the plug groove (31) and then the threaded pin (32) is mutually aligned and matched with the locking hole (150).

4. A wear-resistant throttle valve according to claim 2, characterized in that the plug (15) is provided with a positioning projection (151), and the end of the plug groove (31) is provided with a positioning groove (33) which is mutually matched with the positioning projection (151).

5. The wear-resistant throttle valve according to claim 1, wherein the connecting sleeve (4) is slidably mounted between the middle sleeve (3), a locking butt joint hole (30) is arranged in the middle sleeve (3), an opening of the locking butt joint hole (30) is opened, a locking rod (42) is inserted into the connecting sleeve (4), a limit ring (35) is arranged on the middle sleeve (3), and when the end part of the connecting sleeve (4) is in contact with the limit ring (35), the locking rod (42) is aligned with the locking butt joint hole (30).

6. The wear-resistant throttle valve according to claim 2, wherein a connecting spring (57) is arranged between the plug connector (15) and the pressing ring (55), an inwards-concave locking groove (500) is arranged in the middle of the locking frame (50), two second arc-shaped surfaces (502) are arranged on two sides of the locking groove (500), the second arc-shaped surfaces (502) are in transitional connection with a first arc-shaped surface (501), and the first arc-shaped surface (501) is in smooth transitional connection with the contraction section (60).

7. The wear-resistant throttle valve according to claim 1, wherein the opening and closing mechanism (2) comprises a mounting sleeve (21) arranged on the valve body (1), the mounting sleeve (21) is vertically arranged with the valve body (1), a placing cavity (22) is arranged in the mounting sleeve (21), the placing cavity (22) is communicated with the middle channel (13) and coaxially arranged, a threaded lifting rod (24) is inserted in the placing cavity (22), a sealing rod (20) is arranged at the bottom of the threaded lifting rod (24), the sealing rod (20) is matched with the middle channel (13), a sealing ring (23) is arranged at the connecting part of the threaded lifting rod (24) and the sealing rod (20), a sealing groove (210) is arranged at the top of the mounting sleeve (21), a threaded sleeve (26) is arranged in the placing cavity (210), the threaded sleeve (26) is in threaded connection with the threaded lifting rod (24), a sealing cap (21) and a sealing cap (27) are arranged on the mounting sleeve (21) and the threaded lifting rod (27) through the sealing cap (27), the connecting post (29) is connected with the rotary handle.

8. A method of using the wear resistant throttle valve of any of claims 1-7, comprising the steps of:

s1, before the throttle valve is installed in the middle of a pipeline, firstly, a closing rod (20) of the throttle valve is rotated to the lowest point, the throttle valve is closed, a middle sleeve (3) is sleeved on a connecting pipe (6), a plug connector (15) is matched with a plug groove (31) of the middle sleeve (3), meanwhile, a butt joint head (61) is in sealing butt joint with the end part of a valve body (1), and the middle sleeve (3) is in locking connection with the plug connector (15) through a threaded pin (32);

s2, the valve body (1) and the middle sleeve (3) are slidably arranged on the connecting pipe (6) so that the sliding ball (53) is matched with the locking frame (50) on the contraction section (60), the position of the threaded connecting rod (40) on the connecting sleeve (4) is adjusted so that the threaded connecting rod (40) is connected with the threaded groove (56), the connecting sleeve (4) is slid, the pressing ring (55) is pressed on the wedge-shaped block (52), and the matched locking between the sliding ball (53) and the locking frame (50) is completed;

s3, connecting one end of the valve body (1) close to the liquid inlet pipe (10) with a pipeline through a clamping connector (11), rotating a threaded lifting rod (24), and opening an intermediate channel (13) of the valve body (1) to be communicated with the pipeline.