CN212745094U

CN212745094U - Gate valve

Info

Publication number: CN212745094U
Application number: CN202021539251.4U
Authority: CN
Inventors: 黄敬
Original assignee: Yuhuan Zhengqu Fluid Intelligent Control Co ltd
Current assignee: Yuhuan Zhengqu Fluid Intelligent Control Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-03-19
Anticipated expiration: 2030-07-30

Abstract

The utility model provides a gate valve belongs to valve manufacturing technical field. It has solved current flashboard and has slided easily on the valve body and rock, and the flashboard wearing and tearing when rocking easily, poor stability, problem that life is short. The activity is provided with the square end cap with limbers cross section complex in the limbers of this gate valve, wear to be equipped with the valve rod in the valve body, this valve rod and the rotatory sealed cooperation of valve body, the lower extreme and the square end cap screw fit of valve rod, the orifice end of the limbers of inlet channel and the drill way end of the limbers of outlet channel all are equipped with the intermediate lever, two intermediate levers symmetric distribution are in the both sides of square end cap, be provided with between this square end cap and the intermediate lever that corresponds when the valve rod drives square end cap in the limbers, when radially slideing down, enable the directional guider who steadily slidees of square end cap. The utility model discloses slide stable in structure, the wearing and tearing are difficult for rocking, and it is sealed tighter when square end cap closes the limbers, and structural stability is better, long service life.

Description

Gate valve

Technical Field

The utility model belongs to the technical field of the valve is made, a gate valve is related to.

Background

The control valve is also called as a valve, is a control part in a fluid conveying system, has the functions of diversion, interception, regulation, throttling, backflow prevention, diversion or overflow pressure relief and the like, can be used for controlling various types of fluid activities such as air, water, steam, various corrosive chemical media, slurry, liquid metal, radioactive substances and the like, but the existing control gate valve always leaks liquid, so that the equipment needs to be replaced frequently, and huge economic loss is caused.

In order to solve the above problems, various gate valves have been designed, and some of them have been applied for patent, for example, chinese patent literature discloses a rod-pulling type gate valve [ application No.: 02239528.8, respectively; authorization notice number: CN2550583Y ], which comprises a valve cap, a valve body, a valve rod, a hand wheel and a gate plate, wherein one end of the valve rod is fastened and connected with the hand wheel, the other end of the valve rod is movably connected with the gate plate through a thread, the large part of the valve rod and the gate plate are all arranged in a cavity where the valve cap is communicated with the valve body, the cavity wall of the valve cap is provided with a step, so that the valve cap can be divided into an upper cavity and a lower cavity which are communicated up and down, the valve rod is provided with a convex ring which is matched with the upper cavity of the valve cap, the valve rod on the upper part of the convex ring.

In foretell structure, this flashboard is the sliding closure valve on the valve body, and guider when this flashboard slided is not set up between this flashboard and the valve body, and this flashboard slides easily on the valve body and rocks, rocks easy time flashboard wearing and tearing, leads to the flashboard to close sealed not tight, and structural stability is relatively poor, and life is short.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, square end cap in the limbers of valve body middle and upper, lower radial sliding stable in structure, difficult wearing and tearing, long service life's gate valve.

The purpose of the utility model can be realized by the following technical proposal: a gate valve comprises a valve body with a water inlet channel and a water outlet channel, wherein a water through hole for communicating the water inlet channel with the water outlet channel is formed in the valve body, the water through hole is rectangular, a square plug matched with the cross section of the water through hole is movably arranged in the water through hole, a valve rod is arranged in the valve body in a penetrating mode, the valve rod is matched with the valve body in a rotating and sealing mode, the lower end of the valve rod is matched with the square plug in a spiral mode, when the valve rod rotates, the valve rod drives the square plug to slide up and down in the water through hole in the radial direction to close or open the water inlet channel and the water outlet channel, and the gate valve is characterized in that an intermediate rod is arranged at the orifice end of the water through hole of the water inlet channel and the orifice end of the water through hole of the water outlet channel, the two intermediate rods are symmetrically distributed on two sides of the square plug, and a middle rod used for driving, And when the lower part slides in the radial direction, the guide device can ensure that the square plug slides stably in a directional manner.

The gate valve is mainly characterized in that a guide device is arranged between the square plug and the corresponding intermediate rod, the square plug can slide in the water through hole in the valve body in the up-and-down radial direction through the guide device, the square plug is not prone to shaking and wearing when sliding, the water inlet channel and the water outlet channel are closed and sealed tightly by the square plug, and the service life is long. In actual use, the square plug is of a square plate structure.

In the above gate valve, the guiding device includes a guiding sleeve, the side walls on both sides of the square plug are provided with vertically arranged guiding grooves, the guiding sleeve is respectively fixed at the upper ends of the two intermediate rods through bolts, when the square plug is movably arranged in the water through hole, the guiding sleeves on the two intermediate rods are vertically arranged in the guiding grooves of the corresponding square plugs, and the outer wall of the guiding sleeve is attached to the groove walls of the corresponding guiding grooves of the square plugs. The guide grooves on the two sides of the square plug are matched with the guide sleeves arranged on the two sides in a guide mode, so that the square plug can stably slide in the water through hole in the vertical radial direction, the structural stability is high, and the square plug is closed or opened stably in the valve body.

In the above gate valve, the guide sleeve is a rectangular sleeve, an inner wall of a sleeve hole of the guide sleeve is provided with an internal thread, an outer wall of the bolt is provided with an external thread, the guide sleeve is located on the inner side of the corresponding intermediate rod, and the bolt penetrates through the intermediate rod and is in threaded connection with the internal thread of the guide sleeve through the external thread. The purpose that sets up like this is the assembly of the inboard of convenient uide bushing at the intermediate lever, and convenient assembling, and the contact of the cell wall of the outer wall of this uide bushing and guide way is the contact of face with the face, and the purpose that sets up like this makes the better direction cooperation of guide bushing and square end cap's guide way.

In the above gate valve, the valve body includes an upper valve body and a lower valve body, the upper valve body and the lower valve body are detachably connected, a sealing ring for sealing and matching the upper valve body and the lower valve body is arranged between the upper valve body and the lower valve body, a step groove formed by expanding is formed in the middle of the inner wall of the upper valve body, a step sleeve is detachably connected to the step groove, a step position is arranged at the upper end of the step sleeve, a convex ring is arranged on the outer wall of the valve rod, when the valve rod is arranged in the upper valve body of the valve body in a penetrating mode, the convex ring of the valve rod is located in the step position of the corresponding step sleeve and is axially abutted against the step sleeve, and the valve rod is rotatably matched with the upper valve body. When the step sleeve is detachably connected in the step groove of the upper valve body, the step position of the step sleeve and the step groove of the upper valve body form a rotating cavity, the convex ring is positioned in the rotating cavity to enable the valve rod and the upper valve body to be in rotating fit, the structure is stable, the service life is long, and axial movement of the valve rod when the valve rod is in rotating fit with the upper valve body can be effectively prevented.

In the gate valve, the outer wall of the step sleeve is provided with an external thread, the wall of the step groove is provided with an internal thread, and the external thread of the step sleeve is spirally connected to the internal thread of the step groove. The purpose of the arrangement is to facilitate the detachable connection of the step sleeve in the step groove; during actual assembly, when the step sleeve is in spiral connection with the step groove, glue is applied to the spiral connection position of the step sleeve and the step groove, so that the step sleeve is prevented from being loosened in a spiral mode in the step groove, and the service life is long.

In foretell a gate valve, the outer limit of the upper end of valve rod on axial interval distribution have three rings to inlay and establish the groove, these three rings inlay and establish the inslot and all inlay and be equipped with the sealing ring, when the valve rod worn to locate in the last valve body of valve body, these three sealing rings all supported the cooperation with the inner wall of last valve body is sealed to lean on. The three annular embedding grooves are axially distributed at intervals, so that the sealing effectiveness between the valve rod and the upper valve body can be ensured.

In the gate valve, the upper end of the upper valve body is provided with an assembly cylinder extending upwards in the axial direction, the upper end of the valve rod extends out of the upper valve body and extends into the assembly cylinder, and the upper end of the valve rod in the assembly cylinder is triangular. The purpose of setting up like this is to prevent that the valve rod from being opened by mistake, only can rotate the valve rod with the upper end axial of dedicated sleeve and valve rod cup joints the cooperation.

Compared with the prior art, the gate valve has the advantages that: the square plug has the advantages that the structural design is reasonable and simple, the upper radial sliding structure and the lower radial sliding structure of the square plug in the limber hole in the valve body are stable, the square plug is not prone to shaking and abrasion, the square plug is sealed tightly when closing the limber hole, the structural stability is good, and the service life is long.

Drawings

Fig. 1 is a schematic sectional structure view of the gate valve.

Fig. 2 is a schematic top view of the gate valve.

In the figure, 1, a valve body; 1a, an upper valve body; 1b, a lower valve body; 2. a water through hole; 3. a square plug; 4. a valve stem; 5. an intermediate lever; 6. a guide sleeve; 7. a guide groove; 8. a bolt; 9. a seal ring; 10. step sleeves; 11. a step position; 12. a convex ring; 13. a seal ring; 14. the cartridge is assembled.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figures 1 and 2, the gate valve mainly comprises a valve body 1 with a water inlet channel and a water outlet channel, a water through hole 2 which enables the water inlet channel and the water outlet channel to be communicated is arranged in the valve body 1, the water through hole 2 is rectangular, a square plug 3 matched with the cross section of the water through hole 2 is movably arranged in the water through hole 2, a valve rod 4 penetrates through the valve body 1, the valve rod 4 is matched with the valve body 1 in a rotating and sealing mode, the lower end of the valve rod 4 is matched with the square plug 3 in a spiral mode, when the valve rod 4 rotates, the square plug 3 is driven by the valve rod 4 to slide up and down in the water through hole 2 in the radial direction to close or open the water outlet channel, intermediate rods 5 are arranged at the hole opening end of the water through hole 2 of the water inlet channel and the hole opening end of the water through hole 2 of the water outlet channel, the two intermediate rods 5 are symmetrically distributed on two sides of the square plug 3, and a gap is arranged, And when the lower part slides in the radial direction, the square plug 3 can slide stably in an oriented way.

In actual manufacturing, the guide device is implemented by the following specific modes: the water-flow type water-flow hole plugging device mainly comprises guide sleeves 6, guide grooves 7 which are vertically arranged are formed in the side walls of two sides of a square plug 3, the guide sleeves 6 are respectively fixed at the upper ends of two middle rods 5 through bolts 8, when the square plug 3 is movably arranged in a water-flow hole 2, the guide sleeves 6 on the two middle rods 5 are vertically arranged in the guide grooves 7 of the corresponding square plugs 3, and the outer walls of the guide sleeves 6 are matched with the groove walls of the guide grooves 7 of the corresponding square plugs 3 in an attached mode; in actual manufacturing, the guide sleeve 6 is a rectangular sleeve, the inner wall of the sleeve hole of the guide sleeve 6 is provided with internal threads, the outer wall of the bolt 8 is provided with external threads, the guide sleeve 6 is positioned on the inner side of the corresponding intermediate rod 5, and the bolt 8 penetrates through the intermediate rod 5 and is in threaded connection with the internal threads of the guide sleeve 6 through the external threads.

During actual manufacturing, the valve body 1 mainly comprises an upper valve body 1a and a lower valve body 1b, the upper valve body 1a and the lower valve body 1b are detachably connected, a sealing ring 9 which enables the upper valve body 1a and the lower valve body 1b to be in sealing fit is arranged between the upper valve body 1a and the lower valve body 1b, a step groove formed by expanding diameter is formed in the middle of the inner wall of the upper valve body 1a, a step sleeve 10 is detachably connected onto the step groove, the upper end of the step sleeve 10 is provided with a step position 11, the outer wall of the valve rod 4 is provided with a convex ring 12, when the valve rod 4 is arranged in the upper valve body 1a of the valve body 1 in a penetrating mode, the convex ring 12 of the valve rod 4 is located in the step position 11 of the corresponding step sleeve 10 and is axially abutted against the step sleeve 10, and the valve rod 4; specifically speaking: the outer wall of the step sleeve 10 is provided with an external thread, the groove wall of the step groove is provided with an internal thread, and the external thread of the step sleeve 10 is spirally connected to the internal thread of the step groove.

When actually making, axial interval distribution has three rings to inlay and establishes the groove on the outside of the upper end of this valve rod 4, and these three rings are inlayed and are established the inslot and all are inlayed and be equipped with sealing ring 13, and when valve rod 4 worn to locate in the last valve body 1a of valve body 1, these three sealing ring 13 all supported the cooperation with the inner wall of last valve body 1a is sealed.

In actual manufacturing, the upper end of the upper valve body 1a is provided with an assembly cylinder 14 extending upwards in the axial direction, the upper end of the valve rod 4 extends into the assembly cylinder 14 after extending out of the upper valve body 1a, and the upper end of the valve rod 4 in the assembly cylinder 14 is triangular.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A gate valve comprises a valve body (1) with a water inlet channel and a water outlet channel, wherein a water through hole (2) enabling the water inlet channel and the water outlet channel to be communicated is formed in the valve body (1), the water through hole (2) is rectangular, a square plug (3) matched with the cross section of the water through hole (2) is movably arranged in the water through hole (2), a valve rod (4) penetrates through the valve body (1), the valve rod (4) is matched with the valve body (1) in a rotating and sealing mode, the lower end of the valve rod (4) is matched with the square plug (3) in a spiral mode, when the valve rod (4) rotates, the valve rod (4) drives the square plug (3) to slide up and down in the water through hole (2) in the radial direction to close or open the water inlet channel and the water outlet channel, and the gate valve is characterized in that the orifice end of the water through hole (2) of the water inlet channel and the orifice end of the water through hole (2) of the water outlet, the two middle rods (5) are symmetrically distributed on two sides of the square plug (3), and a guide device which can enable the square plug (3) to directionally and stably slide when the valve rod (4) drives the square plug (3) to radially slide up and down in the water through hole (2) is arranged between the square plug (3) and the corresponding middle rod (5).

2. A gate valve according to claim 1, characterized in that the guiding device comprises a guiding sleeve (6), the side walls of the two sides of the square plug (3) are provided with vertically arranged guiding grooves (7), the guiding sleeve (6) is respectively fixed at the upper ends of the two intermediate rods (5) through bolts (8), when the square plug (3) is movably arranged in the water hole (2), the guiding sleeves (6) on the two intermediate rods (5) are vertically arranged in the corresponding guiding grooves (7) of the square plug (3), and the outer wall of the guiding sleeve (6) is attached to and matched with the groove walls of the corresponding guiding grooves (7) of the square plug (3).

3. A gate valve according to claim 2, characterized in that the guide sleeve (6) is a rectangular sleeve, the inner wall of the sleeve hole of the guide sleeve (6) is provided with internal threads, the outer wall of the bolt (8) is provided with external threads, the guide sleeve (6) is positioned on the inner side of the corresponding intermediate rod (5), and the bolt (8) passes through the intermediate rod (5) and is screwed with the internal threads of the guide sleeve (6) through the external threads.

4. A gate valve according to claim 3, characterized in that the valve body (1) comprises an upper valve body (1 a) and a lower valve body (1 b), the upper valve body (1 a) and the lower valve body (1 b) are detachably connected, a sealing ring (9) which enables the upper valve body (1 a) and the lower valve body (1 b) to be in sealing fit is arranged between the upper valve body (1 a) and the lower valve body (1 b), a step groove formed by expanding diameter is arranged in the middle of the inner wall of the upper valve body (1 a), a step sleeve (10) is detachably connected to the step groove, a step position (11) is arranged at the upper end of the step sleeve (10), a convex ring (12) is arranged on the outer wall of the valve rod (4), when the valve rod (4) is arranged in the upper valve body (1 a) of the valve body (1), the convex ring (12) of the valve rod (4) is positioned in the step position (11) of the corresponding step sleeve (10) and is axially abutted against the step sleeve (10), the valve rod (4) is rotatably matched with the upper valve body (1 a).

5. A gate valve according to claim 4, characterized in that the outer wall of the step sleeve (10) is provided with an external thread, the wall of the step groove is provided with an internal thread, and the external thread of the step sleeve (10) is screwed on the internal thread of the step groove.

6. A gate valve according to claim 5, characterized in that, three annular embedding grooves are axially distributed on the outer edge of the upper end of the valve rod (4) at intervals, sealing rings (13) are embedded in the three annular embedding grooves, and when the valve rod (4) is arranged in the upper valve body (1 a) of the valve body (1) in a penetrating way, the three sealing rings (13) are matched with the inner wall of the upper valve body (1 a) in a sealing and abutting way.

7. A gate valve according to claim 6, characterized in that the upper end of the upper valve body (1 a) is provided with an axially upward extending fitting cylinder (14), the upper end of the valve rod (4) extends out of the upper valve body (1 a) into the fitting cylinder (14), and the upper end of the valve rod (4) in the fitting cylinder (14) is triangular.