CN219062490U

CN219062490U - Electric gate valve

Info

Publication number: CN219062490U
Application number: CN202223580789.1U
Authority: CN
Inventors: 盛一冰; 何善良; 姚勇
Original assignee: Ningbo Instrument Valve Factory
Current assignee: Ningbo Instrument Valve Factory
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-23
Anticipated expiration: 2032-12-31

Abstract

The utility model relates to an electric gate valve which comprises a driving piece, a valve core, a first valve body, a second valve body, a thread bush, a valve rod, a guide sleeve and a double-connecting-rod assembly, wherein a first valve cavity is arranged in the first valve body; the valve core and the guide rod are only in contact sliding connection, and the valve core and the guide rod have the hidden danger of derailment in the use process, so that the technical problem of unsatisfactory working stability is solved.

Description

Electric gate valve

Technical Field

The utility model relates to the technical field of gate valves, in particular to an electric gate valve.

Background

The gate valve is a valve with a gate plate and a valve seat being always tightly contacted and sealed, and the principle is that the gate plate is provided with a circular opening with the diameter, the circular opening on the gate plate is completely separated from the diameter and is matched with the diameter through opening and closing the gate plate, and the valve has the advantages that the valve body has no groove in the diameter, a medium can not be blocked, the valve has the full-through radial flow characteristic, and the sealing structure can be divided into a soft sealing structure and a hard sealing structure. For example, chinese patent CN203703188U discloses an electric ultra-high vacuum gate valve, which adopts a double-link structure to drive a valve core component to move up and down along a guide rod, so as to enhance the stability of operation, avoid vacuum jitter, and make the whole vacuum system work stably. However, in the gate valve disclosed in the above patent, the valve core and the guide rod are only in contact sliding connection, and the valve core and the guide rod have the hidden danger of derailment in the use process, so that the working stability is still not ideal.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide an electric gate valve capable of preventing a valve core from derailing with a guide rod and further improving the working stability, so as to solve the technical problem that the valve core and the guide rod of the gate valve in the prior art are only in contact sliding connection, and the valve core and the guide rod have hidden danger of derailing in the use process, so that the working stability is still not ideal.

In order to solve the technical problems, the utility model provides an electric gate valve which comprises a driving piece, a valve core, a first valve body, a second valve body, a threaded sleeve, a valve rod, a guide sleeve and a double-connecting rod assembly, wherein the first valve cavity is arranged in the first valve body, the second valve cavity is arranged in the second valve body, the lower end of the first valve body is connected with the upper end of the second valve body, the first valve cavity is communicated with the second valve cavity, the driving piece is connected with the upper end of the first valve body, the driving piece is connected with the threaded sleeve and drives the threaded sleeve to rotate, the threaded sleeve is positioned in the first valve cavity, the guide rod, the valve core and the guide sleeve are all positioned in the second valve cavity, the guide rod is vertically arranged, the guide sleeve is connected with the valve core, the guide sleeve is sleeved on the guide rod in a sliding manner, the valve rod is positioned in the first valve cavity and the second valve cavity, the upper end of the valve rod is in threaded connection with the threaded sleeve, the lower end of the valve rod is in rotary connection with the upper end of the double-connecting rod assembly, and the lower end of the double-connecting rod assembly is in rotary connection with the valve core.

After adopting the structure, the electric gate valve has the following advantages: the driving piece is electrified to drive the threaded sleeve to rotate, and the threaded sleeve is in threaded connection with the valve rod, so that the valve rod can vertically move to drive the valve core to move up and down through the double-connecting-rod assembly, the guide sleeve and the guide rod play a guiding role in the movement of the valve core in the movement process of the valve core, the guide sleeve is sleeved on the guide rod and can prevent the guide sleeve from being separated from the guide rod, namely, the valve core is prevented from being separated from the guide rod, and the working stability is improved.

As an improvement, the first valve body comprises a third valve body, a fourth valve body and a first fixing bolt, an annular bulge is connected to the lower end face of the third valve body, a mounting groove matched with the bulge is formed in the upper end face of the fourth valve body, the bulge is inserted in the mounting groove and connected with the fourth valve body through the first fixing bolt, the driving piece is connected with the upper end of the third valve body, the threaded sleeve is positioned in the third valve body, and the lower end of the fourth valve body is connected with the second valve body; by adopting the structure, the first valve body is provided with the split structure, so that the assembly is convenient, and the connection structure of the valve rod and the threaded sleeve can be conveniently observed and overhauled through separating the third valve body from the fourth valve body.

As an improvement, the outer diameter of the bulge is gradually reduced from top to bottom, the diameter of the mounting groove is gradually reduced from top to bottom, and the slope of the reduction of the outer diameter of the bulge is the same as the slope of the reduction of the diameter of the mounting groove; by adopting the structure, the third valve body and the fourth valve body are connected more tightly, and the third valve body and the fourth valve body can be easily separated only by slightly separating the third valve body and the fourth valve body when the valve is detached, so that the valve is convenient to detach.

As an improvement, the second valve body comprises a valve body, an end cover, a mounting seat, a second fixing bolt and a third fixing bolt, a through hole is formed in the middle of the end cover, the end cover is connected to the upper end of the valve body through the second fixing bolt and communicated with the first valve cavity and the second valve cavity through the through hole, the lower end of the first valve body is connected with the end cover, the mounting seat is positioned at the bottom end of the interior of the valve body, the mounting seat is connected with the valve body through the third fixing bolt, the upper end of the guide rod is inserted into the lower end face of the end cover, and the lower end of the guide rod is inserted into the upper end face of the mounting seat; by adopting the structure, the valve rod is convenient to install due to the detachable split structure among the mounting seat, the end cover and the valve body.

As an improvement, the number of guide rods is two, the number of guide sleeves is four, the left side of the valve core is connected with two guide sleeves, the right side of the valve core is connected with two guide sleeves, the valve core is positioned between the two guide rods, and each guide sleeve is in sliding sleeve connection with the guide rod on the same side; by adopting the structure, the sliding connection between the valve core and the guide rod is more stable.

As an improvement, the double-connecting-rod assembly comprises two groups of connecting rod assemblies which are arranged in a crossing way, each connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod, the upper end of the second connecting rod is rotationally connected with the lower end face of the end cover, the lower end of the second connecting rod is rotationally connected with the upper end of the third connecting rod, the lower end of the third connecting rod is rotationally connected with the valve core, the upper end of the first connecting rod is rotationally connected with the lower end of the valve rod, and the lower end of the first connecting rod is rotationally connected with the middle part of the second connecting rod.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic view of a second valve body portion according to the present utility model.

FIG. 3 is a schematic view of a first valve body portion according to the present utility model.

Reference numerals: 1. a driving member; 2. a valve core; 3. a first valve body; 31. a third valve body; 32. a fourth valve body; 33. a first fixing bolt; 4. a second valve body; 41. a valve body; 42. an end cap; 43. a mounting base; 44. a second fixing bolt; 45. a third fixing bolt; 5. a thread sleeve; 6. a valve stem; 7. a guide rod; 8. guide sleeve; 9. a dual link assembly; 10. a first valve chamber; 11. a second valve chamber; 12. a protrusion; 13. a mounting groove; 14. a through hole; 16. a first link; 17. a second link; 18. and a third link.

Detailed Description

The following describes an electric gate valve in detail with reference to the drawings.

As shown in fig. 1 to 3, an electric gate valve comprises a driving piece 1, a valve core 2, a first valve body 3, a second valve body 4, a threaded sleeve 5, a valve rod 6, a guide rod 7, a guide sleeve 8 and a double-connecting-rod assembly 9, wherein a first valve cavity 10 is arranged in the first valve body 3, a second valve cavity 11 is arranged in the second valve body 4, the lower end of the first valve body 3 is connected with the upper end of the second valve body 4, the first valve cavity 10 is communicated with the second valve cavity 11, as shown in fig. 1, the first valve cavity 10 penetrates through the upper end and the lower end of the first valve body 3, the second valve cavity 11 penetrates through the upper end of the second valve body 4, the width of the first valve body 3 is smaller than that of the second valve body 4, and the width of the first valve cavity 10 is smaller than that of the second valve cavity 11.

As shown in fig. 1, a driving piece 1 is connected to the upper end of a first valve body 3, the driving piece 1 is connected with a thread bush 5 and drives the thread bush 5 to rotate, the thread bush 5 is positioned in a first valve cavity 10, a valve rod 6 is positioned in the first valve cavity 10 and a second valve cavity 11, the upper end of the valve rod 6 is in threaded connection with the thread bush 5, and the upper end of the valve rod 6 is positioned in the thread bush 5; as shown in fig. 1 and 3, the first valve body 3 comprises a third valve body 31, a fourth valve body 32 and a first fixing bolt 33, an annular protrusion 12 is connected to the lower end surface of the third valve body 31, a mounting groove 13 matched with the protrusion 12 is formed in the upper end surface of the fourth valve body 32, the protrusion 12 is inserted into the mounting groove 13 and connected with the fourth valve body 32 through the first fixing bolt 33, the first fixing bolt 33 passes through the fourth valve body 32 and is connected with the protrusion 12 in a threaded manner, and the protrusion 12 is positioned on the inner side of the lower end surface of the third valve body 31; the driving piece 1 is connected with the upper end of the third valve body 31, the thread bush 5 is positioned in the third valve body 31, the whole thread bush 5 is positioned in the third valve body 31, and the lower end of the fourth valve body 32 is connected with the second valve body 4. In addition, as shown in fig. 3, the outer diameter of the protrusion 12 gradually decreases from top to bottom, the diameter of the installation groove 13 gradually decreases from top to bottom, and the slope of the decrease in the outer diameter of the protrusion 12 is the same as the slope of the decrease in the diameter of the installation groove 13, that is, the outer wall of the protrusion 12 in the cross section of fig. 3 is parallel to and attached to the inner wall of the installation groove 13.

As shown in fig. 1 and 2, the guide rod 7, the valve core 2 and the guide sleeve 8 are all positioned in the second valve cavity 11, the guide rod 7 is vertically arranged, the guide sleeve 8 is connected with the valve core 2, the guide sleeve 8 is slidably sleeved on the guide rod 7, the lower end of the valve rod 6 is rotationally connected with the upper end of the double-connecting-rod assembly 9, and the lower end of the double-connecting-rod assembly 9 is rotationally connected with the valve core 2; as shown in fig. 2, the second valve body 4 includes a valve body 41, an end cover 42, a mounting seat 43, a second fixing bolt 44 and a third fixing bolt 45, the cross section of the valve body 41 is U-shaped, a through hole 14 is provided in the middle of the end cover 42, the lower end of the first valve body 3 is connected with the end cover 42, and specifically, the lower end of the fourth valve body 32 is welded with the end cover 42. The end cover 42 is connected to the upper end of the valve body 41 through a second fixing bolt 44 and is communicated with the first valve cavity 10 and the second valve cavity 11 through the through hole 14, and the second fixing bolt 44 passes through the end cover 42 and is in threaded connection with the valve body 41; the mounting seat 43 is positioned at the bottom end inside the valve body 41, the mounting seat 43 is connected with the valve body 41 through a third fixing bolt 45, the third fixing bolt 45 penetrates through the side wall of the valve body 41 and is in threaded connection with the mounting seat 43, the upper end of the guide rod 7 is inserted into the lower end face of the end cover 42, and the lower end of the guide rod 7 is inserted into the upper end face of the mounting seat 43; as shown in fig. 2, the number of guide rods 7 is two, the number of guide sleeves 8 is four, the left side of the valve core 2 is connected with an upper guide sleeve 8 and a lower guide sleeve 8, the right side of the valve core 2 is connected with an upper guide sleeve 8 and a lower guide sleeve 8, the valve core 2 is positioned between the two guide rods 7, each guide sleeve 8 is in sliding sleeve connection with the guide rod 7 on the same side, namely, the guide sleeve 8 on the left side of the valve core 2 is in sliding sleeve connection with the guide rod 7 on the left side, and the guide sleeve 8 on the right side of the valve core 2 is in sliding sleeve connection with the guide rod 7 on the right side.

As shown in fig. 1 and 2, the double-link assembly 9 includes two sets of link assemblies that are disposed in a crossing manner, the link assemblies include a first link 16, a second link 17 and a third link 18, the upper end of the second link 17 is rotationally connected with the lower end surface of the end cap 42, the lower end of the second link 17 is rotationally connected with the upper end of the third link 18, the lower end of the third link 18 is rotationally connected with the valve core 2, the upper end of the first link 16 is rotationally connected with the lower end of the valve rod 6, the lower end of the first link 16 is rotationally connected with the middle part of the second link 17, the lower end of the valve rod 6 passes through the through hole 14 and is located in the second valve cavity 11, and the specific structure of the double-link assembly 9 is the prior art and will not be repeated herein.

During assembly, the double-connecting-rod assembly 9, the end cover 42, the valve rod 6, the valve core 2, the guide sleeve 8, the guide rod 7 and the mounting seat 43 are connected, then the mounting seat 43 is placed in the valve body 41 and is fixed by the third fixing bolt 45, the end cover 42 is fixed with the valve body 41 by the second fixing bolt 44, and then the fourth valve body 32 is connected with the end cover 42 to connect the driving piece 1, the thread bush 5 and the valve rod 6; in this embodiment, the driving piece 1 is a motor, and the driving piece 1 is electrified to drive the threaded sleeve 5 to rotate, and because the threaded sleeve 5 is in threaded connection with the valve rod 6, the valve rod 6 can vertically move so as to drive the valve core 2 to move up and down through the double-connecting rod assembly 9, and in the moving process of the valve core 2, the guide sleeve 8 and the guide rod 7 play a guiding role on the movement of the valve core 2, and the guide sleeve 8 is sleeved on the guide rod 7 so as to prevent the guide sleeve 8 from being separated from the guide rod 7, namely prevent the valve core 2 from being separated from the guide rod 7, thereby improving the working stability.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above-described one embodiment, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.

Claims

1. An electric gate valve is characterized by comprising a driving piece (1), a valve core (2), a first valve body (3), a second valve body (4), a threaded sleeve (5), a valve rod (6), a guide rod (7), a guide sleeve (8) and a double-connecting-rod assembly (9), wherein a first valve cavity (10) is arranged in the first valve body (3), a second valve cavity (11) is arranged in the second valve body (4), the lower end of the first valve body (3) is connected with the upper end of the second valve body (4) and the first valve cavity (10) is communicated with the second valve cavity (11), the driving piece (1) is connected with the upper end of the first valve body (3), the driving piece (1) is connected with the threaded sleeve (5) and drives the threaded sleeve (5) to rotate, the threaded sleeve (5) is positioned in the first valve cavity (10), the guide rod (7), the valve core (2) and the guide sleeve (8) are both positioned in the second valve cavity (11), the guide rod (7) is vertically arranged, the guide sleeve (8) is connected with the first valve cavity (7), the guide sleeve (8) is connected with the second valve cavity (11) in a sliding mode, the upper end of the valve rod (6) is in threaded connection with the threaded sleeve (5), the lower end of the valve rod (6) is in rotary connection with the upper end of the double-connecting-rod assembly (9), and the lower end of the double-connecting-rod assembly (9) is in rotary connection with the valve core (2).

2. An electric gate valve according to claim 1, characterized in that the first valve body (3) comprises a third valve body (31), a fourth valve body (32) and a first fixing bolt (33), an annular protrusion (12) is connected to the lower end surface of the third valve body (31), a mounting groove (13) matched with the protrusion (12) is formed in the upper end surface of the fourth valve body (32), the protrusion (12) is inserted into the mounting groove (13) and connected with the fourth valve body (32) through the first fixing bolt (33), the driving piece (1) is connected with the upper end of the third valve body (31), the thread bush (5) is located in the third valve body (31), and the lower end of the fourth valve body (32) is connected with the second valve body (4).

3. An electric gate valve according to claim 2, wherein the outer diameter of the boss (12) gradually decreases from top to bottom, the diameter of the mounting groove (13) gradually decreases from top to bottom, and the slope of the decrease in the outer diameter of the boss (12) is the same as the slope of the decrease in the diameter of the mounting groove (13).

4. An electric gate valve according to claim 1, characterized in that the second valve body (4) comprises a valve body (41), an end cover (42), a mounting seat (43), a second fixing bolt (44) and a third fixing bolt (45), a through hole (14) is formed in the middle of the end cover (42), the end cover (42) is connected to the upper end of the valve body (41) through the second fixing bolt (44) and is communicated with the first valve cavity (10) and the second valve cavity (11) through the through hole (14), the lower end of the first valve body (3) is connected with the end cover (42), the mounting seat (43) is located at the bottom end inside the valve body (41), the mounting seat (43) is connected with the valve body (41) through the third fixing bolt (45), the upper end of the guide rod (7) is inserted on the lower end face of the end cover (42), and the lower end of the guide rod (7) is inserted on the upper end face of the mounting seat (43).

5. The electric gate valve according to claim 4, wherein the number of the guide rods (7) is two, the number of the guide sleeves (8) is four, the left side of the valve core (2) is connected with two guide sleeves (8), the right side of the valve core (2) is connected with two guide sleeves (8), the valve core (2) is located between the two guide rods (7), and each guide sleeve (8) is in sliding sleeve connection with the guide rod (7) on the same side.

6. The electric gate valve according to claim 4, wherein the double-link assembly (9) comprises two sets of link assemblies which are arranged in a crossing manner, the link assemblies comprise a first link (16), a second link (17) and a third link (18), the upper end of the second link (17) is rotationally connected with the lower end face of the end cover (42), the lower end of the second link (17) is rotationally connected with the upper end of the third link (18), the lower end of the third link (18) is rotationally connected with the valve core (2), the upper end of the first link (16) is rotationally connected with the lower end of the valve rod (6), and the lower end of the first link (16) is rotationally connected with the middle part of the second link (17).