Gate valve pressing plate fixing structure

Abstract

The utility model discloses a gate valve pressing plate fixing structure, and relates to the technical field of gate valves. According to the gate valve pressing plate fixing structure, the pin shaft is rotated to drive the transverse plate to rotate, so that the magnet is attracted to the surface of the valve cover, the pin shaft is limited in the vertical state, the pin shaft is pre-installed and fixed, the upper end of the pin shaft is conveniently arranged in the pin holes in the two ends of the pressing plate body in a penetrating mode, the rotating plate is rotated to drive the protective sleeve to move to the position above the nut, and then the rotating plate is pressed downwards; the inclined face of the limiting elastic buckle is stressed to drive the limiting elastic buckle to be contained in an elastic buckle groove till the elastic buckle groove moves to the lower end of the transverse plate, at the moment, the limiting elastic buckle pops up under the elastic force effect of the reset spring and is clamped with the transverse plate, the stand column is limited, and at the moment, the lower end of the protection sleeve is tightly attached to the pressing plate body. And meanwhile, the damping spring provides continuous pressure and is matched with the protection sleeve to buffer vibration generated by the pressing plate body, and protection and pressing of the nut and the pressing plate body are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a gate valve pressure plate fixing structure. Background Art

[0002] The gate valve has the advantages of compact structure, good valve rigidity, smooth channel, small flow resistance and long service life. Among them, the pressure plate of the gate valve is used to fasten the sealing gasket and the valve disc body. It is an important component of the gate valve and requires the use of a pressure plate fixing structure for installation and fixation.

[0003] For example, publication number CN202659930U discloses a gate valve pressure plate fixing structure, comprising a valve body, a valve cover mounted on the upper end of the valve body, a valve stem rotatably mounted in the valve cover, a pressure plate sleeved on the valve stem at the upper end of the valve cover, a flange on the side wall of the pressure plate, a pin slot provided on the flange, a shaft seat on the upper end side wall of the valve cover, a pin hole provided in the shaft seat, a pin rotatably mounted in the pin hole; the utility model is easy to install and use, and easy to repair and maintain;

[0004] The gate valve pressure plate fixing structure in this utility model lacks a pre-installed positioning structure for the pin shaft, which causes the pin shaft to easily deflect and tilt when assembled with the pressure plate, affecting the assembly efficiency. It also lacks a protective fixing function for the pin shaft nut, which causes the pin shaft nut to be easily affected by vibration and become deflected and loose, affecting the stability of the pressure plate. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a gate valve pressure plate fixing structure, which solves the problem that the gate valve pressure plate fixing structure lacks a pre-installation positioning structure for the pin shaft, which causes the pin shaft to easily deflect and tilt when assembled with the pressure plate, affecting the assembly efficiency, and lacks a protective fixing function for the pin shaft nut, which causes the pin shaft nut to be easily affected by vibration and become deflected and loose, affecting the stability of the pressure plate.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a gate valve pressure plate fixing structure, including a valve cover, a valve stem is provided on the inner side of the valve cover, the upper end of the valve stem extends to the outer side of the valve cover and is sleeved with a pressure plate body, pins are provided at the front and rear ends of the pressure plate body, a nut is threadedly connected to the outer side of the upper end of the pin, a cross plate is fixedly installed on the outer side of the lower end of the pin, a magnet is provided at one end of the cross plate close to the valve stem, a through groove is provided on the surface of the cross plate, a column is provided on the inner side of the through groove, and limit spring buckles are provided on the left and right sides of the column, the upper end of the column is rotatably connected to a rotating plate, a protective sleeve is provided on the outer side of the nut, and a shock-absorbing spring is provided at the upper end of the protective sleeve.

[0007] Preferably, the front and rear ends of the pressure plate body are provided with pin holes running through them, the pin shaft and the inner side of the pin hole are adapted to each other, and the lower end of the pin shaft and the surface of the valve cover are rotatably connected through a connecting seat, which facilitates the rotation of the pin shaft and the positioning of the pressure plate body.

[0008] Preferably, two transverse plates are symmetrically arranged front to back, and the ends of the two transverse plates close to each other are magnetically connected to the surface of the valve cover through magnets, and are arranged parallel to the surface of the valve cover in the upper and lower directions, which facilitates the pre-installation positioning of the pin shaft.

[0009] Preferably, the through slot is located at one end of the two horizontal plates away from each other and is arranged to pass through the upper and lower parts. Two upright posts are symmetrically arranged front to back and are slidably connected to the inner side of the through slot. Limiting plates are fixedly installed at both ends of the upright posts to facilitate the sliding and lifting of the upright posts.

[0010] Preferably, spring clip grooves are provided on the left and right sides of the column, one end of the limit spring clip is slidably connected to the inner side of the spring clip groove, and the other end of the limit spring clip extends to the outer side of the spring clip groove and the lower end of the horizontal plate to adapt to each other. The limit spring clip and the inner side of the spring clip groove are elastically connected by a reset spring, which facilitates the retraction and extension of the limit spring clip and the limitation of the column.

[0011] Preferably, a groove 1 is provided at the lower end of the protective sleeve, and the nut and the upper end of the inner side of the groove 1 are tightly fitted. A groove 2 is provided at the upper end of the groove 1, and the groove 2 and the outer side of the upper end of the pin shaft are adapted to each other. The lower end of the protective sleeve and the surface of the pressure plate body are tightly fitted. The protective sleeve is made of rubber material to achieve protection and compression of the nut.

[0012] Preferably, the lower end of the shock-absorbing spring is fixedly connected to the upper end of the protective sleeve, and the upper end of the shock-absorbing spring is fixedly connected to the rotating plate, which facilitates the disassembly, assembly and movement of the protective sleeve and achieves shock absorption and compression of the protective sleeve. Beneficial effects

[0013] The utility model provides a gate valve pressure plate fixing structure. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The gate valve pressure plate fixing structure is provided with a valve cover, a pressure plate body, a pin shaft, a horizontal plate, and a magnet. The horizontal plate is rotated by rotating the pin shaft, so that the magnet is attracted to the surface of the valve cover, and the pin shaft is limited to a vertical state, thereby realizing pre-installation and fixing of the pin shaft, and facilitating the upper end of the pin shaft to pass through the pin holes at both ends of the pressure plate body.

[0015] 2. The gate valve pressure plate fixing structure is provided with a valve cover, a nut, a through groove, a column, a limit spring buckle, a spring buckle groove, a reset spring, a rotating plate, a protective sleeve, a groove one, a groove two, and a shock-absorbing spring. The protective sleeve is driven to move to the top of the nut by rotating the rotating plate, and then the rotating plate is pressed down to drive the column to slide along the through groove. The inclined surface of the limit spring buckle is driven by force to be retracted into the spring buckle groove until the spring buckle groove moves to the lower end of the cross plate. At this time, the limit spring buckle pops out under the elastic force of the reset spring and engages with the cross plate to limit the column. At this time, the lower end of the protective sleeve is tightly fitted with the pressure plate body, and the upper end of the nut and the pin shaft are sleeved on the inner sides of groove one and groove two. At the same time, the shock-absorbing spring provides a continuous pressure and cooperates with the protective sleeve to buffer the vibration generated by the pressure plate body, thereby protecting and pressing the nut and the pressure plate body, and increasing the stability of the pressure plate body fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0018] Figure 3 This is an enlarged structural diagram of point A of the present utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the protective cover of the present utility model;

[0020] Figure 5 This is a partial front view half-section structural diagram of the column of the present invention.

[0021] In the figure: 1. Valve cover; 2. Valve stem; 3. Pressure plate body; 4. Pin shaft; 41. Connecting seat; 5. Nut; 6. Horizontal plate; 7. Magnet; 8. Through slot; 9. Column; 91. Limit plate; 10. Limit spring; 101. Spring slot; 102. Return spring; 11. Rotating plate; 12. Protective cover; 121. Groove 1; 122. Groove 2; 13. Shock-absorbing spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-5The utility model provides a technical solution: a gate valve pressure plate fixing structure, including a valve cover 1, a valve stem 2 is provided on the inner side of the valve cover 1, the upper end of the valve stem 2 extends to the outer side of the valve cover 1 and is sleeved with a pressure plate body 3, and pins 4 are provided at the front and rear ends of the pressure plate body 3. Pin holes are provided through the front and rear ends of the pressure plate body 3, and the inner sides of the pin holes and the pins 4 are adapted to each other. The lower end of the pin 4 and the surface of the valve cover 1 are rotatably connected through a connecting seat 41. A nut 5 is threadedly connected to the outer side of the upper end of the pin 4, and a horizontal plate 6 is fixedly installed on the outer side of the lower end of the pin 4. A magnet 7 is provided at one end of the horizontal plate 6 close to the valve stem 2. A through groove 8 is provided on the surface of the horizontal plate 6, and a column 9 is provided on the inner side of the through groove 8. There are two plates 6 symmetrically arranged front and back, and the ends of the two horizontal plates 6 close to each other are magnetically connected to the surface of the valve cover 1 through magnets 7, and are arranged parallel to the surface of the valve cover 1 in the upper and lower directions. The through groove 8 is located at the ends of the two horizontal plates 6 away from each other and is arranged to pass through in the upper and lower directions. There are two upright posts 9 symmetrically arranged front and back, and are slidably connected to the inner side of the through groove 8. The horizontal plate 6 is driven to rotate by rotating the pin shaft 4, so that the magnet 7 is attracted to the surface of the valve cover 1, and the pin shaft 4 is limited to a vertical state, thereby realizing pre-installation and fixation of the pin shaft 4, facilitating the upper end of the pin shaft 4 to pass through the pin holes at both ends of the pressure plate body 3. After the passing is completed, the pressure plate body 3 is fixed by threading the nut 5 with the upper end of the pin shaft 4;

[0024] The left and right sides of the column 9 are provided with limit spring buckles 10, and the upper and lower ends of the column 9 are fixedly installed with limit plates 91. The left and right sides of the column 9 are provided with spring buckle grooves 101. One end of the limit spring buckle 10 is slidably sleeved with the inner side of the spring buckle groove 101, and the other end of the limit spring buckle 10 extends to the outer side of the spring buckle groove 101 and adapts to the lower end of the cross plate 6. The limit spring buckle 10 and the inner side of the spring buckle groove 101 are elastically connected by a return spring 102. By rotating the rotating plate 11, the protective sleeve 12 is moved to the top of the nut 5, and then the rotating plate 11 is pressed down, which can drive the column 9 to slide along the through groove 8. The inclined surface of the limit spring buckle 10 is driven by force to be received into the spring buckle groove 101 until the spring buckle groove 101 moves to the lower end of the cross plate 6. At this time, the limit spring buckle 10 pops up under the elastic force of the return spring 102 and engages with the cross plate 6 to achieve the limit of the column 9;

[0025] The upper end of the column 9 is rotatably connected to the rotating plate 11, and a protective sleeve 12 is provided on the outer side of the nut 5. A groove 121 is provided at the lower end of the protective sleeve 12. The nut 5 and the upper end of the inner side of the groove 121 are tightly fitted. A groove 2 122 is provided at the upper end of the groove 121. The groove 2 122 and the outer side of the upper end of the pin 4 are adapted to each other. The lower end of the protective sleeve 12 is tightly fitted with the surface of the pressure plate body 3. The protective sleeve 12 is made of rubber. A shock-absorbing spring 13 is provided at the upper end of the protective sleeve 12. The lower end of the shock-absorbing spring 13 is fixedly connected to the upper end of the protective sleeve 12, and the upper end of the shock-absorbing spring 13 is fixedly connected to the rotating plate 11. By making the lower end of the protective sleeve 12 fit tightly with the pressure plate body 3, the nut 5 and the upper end of the pin shaft 4 are sleeved on the inner side of groove 121 and groove 2 122. At the same time, the shock-absorbing spring 13 provides a continuous pressure and cooperates with the protective sleeve 12 to buffer the vibration generated by the pressure plate body 3, thereby realizing protection and compression of the nut 5 and the pressure plate body 3.

[0026] When in use, the horizontal plate 6 is driven to rotate by rotating the pin shaft 4, so that the magnet 7 is attracted to the surface of the valve cover 1, and the pin shaft 4 is limited to a vertical state, thereby realizing pre-installation and fixation of the pin shaft 4, and conveniently passing the upper end of the pin shaft 4 through the pin holes at both ends of the pressure plate body 3. After passing through, the pressure plate body 3 is fixed by threading the nut 5 with the upper end of the pin shaft 4. By rotating the rotating plate 11, the protective sleeve 12 is driven to move to the top of the nut 5, and then the rotating plate 11 is pressed down, which can drive the column 9 to slide along the through groove 8. The inclined surface of the limiting spring buckle 10 is driven by force to be received into the spring buckle groove 101 until the spring buckle groove 101 moves to the lower end of the horizontal plate 6. At this time, the limiting spring buckle 10 pops up under the elastic force of the reset spring 102 and engages with the horizontal plate 6. , realizing the limitation of the column 9. At this time, the lower end of the protective sleeve 12 fits tightly with the pressure plate body 3, and the upper ends of the nut 5 and the pin shaft 4 are sleeved on the inner sides of the groove 121 and the groove 2 122. At the same time, the shock-absorbing spring 13 provides a continuous pressure and cooperates with the protective sleeve 12 to buffer the vibration generated by the pressure plate body 3, thereby protecting and tightening the nut 5 and the pressure plate body 3, and increasing the stability of the fixation of the pressure plate body 3. When the nut 5 needs to be removed later, the limiting spring buckle 10 is pressed to force it into the spring buckle groove 101, and the limitation of the column 9 is released. The column 9 can be pushed up, driving the protective sleeve 12 to disengage from the nut 5, and then rotating the rotating plate 11 to drive the protective sleeve 12 to turn to one side, which is convenient for screwing the nut 5.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gate valve pressure plate fixing structure, comprising a valve cover (1), characterized in that: A valve stem (2) is provided on the inner side of the valve cover (1), and the upper end of the valve stem (2) extends to the outer side of the valve cover (1) and is sleeved with a pressure plate body (3), and a pin shaft (4) is provided at the front and rear ends of the pressure plate body (3), and a nut (5) is threadedly connected to the outer side of the upper end of the pin shaft (4), and a transverse plate (6) is fixedly installed on the outer side of the lower end of the pin shaft (4), and a magnet (7) is provided at one end of the transverse plate (6) close to the valve stem (2), and a through groove (8) is provided on the surface of the transverse plate (6), and a column (9) is provided on the inner side of the through groove (8), and a limit spring buckle (10) is provided on the left and right sides of the column (9), and the upper end of the column (9) is rotatably connected to a rotating plate (11), and a protective sleeve (12) is provided on the outer side of the nut (5), and a shock-absorbing spring (13) is provided at the upper end of the protective sleeve (12).

2. A gate valve pressure plate fixing structure according to claim 1, characterized in that: The front and rear ends of the pressure plate body (3) are provided with pin holes extending therethrough, the pin shaft (4) and the inner side of the pin hole are adapted to each other, and the lower end of the pin shaft (4) and the surface of the valve cover (1) are rotatably connected via a connecting seat (41).

3. The gate valve pressure plate fixing structure according to claim 1, characterized in that: Two transverse plates (6) are symmetrically arranged front to back, and the ends of the two transverse plates (6) that are close to each other are magnetically connected to the surface of the valve cover (1) through magnets (7), and are arranged vertically parallel to the surface of the valve cover (1).

4. The gate valve pressure plate fixing structure according to claim 1, characterized in that: The through slot (8) is located at one end of the two transverse plates (6) away from each other and is arranged to penetrate the vertical direction. Two upright posts (9) are arranged symmetrically in front and back and are slidably connected to the inner side of the through slot (8). The upper and lower ends of the upright posts (9) are fixedly mounted with limit plates (91).

5. The gate valve pressure plate fixing structure according to claim 1, characterized in that: The left and right sides of the column (9) are provided with snap-action grooves (101), one end of the position-limiting snap-action groove (10) is slidably sleeved with the inner side of the snap-action groove (101), the other end of the position-limiting snap-action groove (100) extends to the outer side of the snap-action groove (101) and is adapted to the lower end of the horizontal plate (6), and the position-limiting snap-action groove (100) and the inner side of the snap-action groove (101) are elastically connected via a return spring (102).

6. The gate valve pressure plate fixing structure according to claim 1, characterized in that: The lower end of the protective sleeve (12) is provided with a groove 1 (121), the nut (5) and the upper end of the inner side of the groove 1 (121) are tightly fitted, the upper end of the groove 1 (121) is provided with a groove 2 (122), the groove 2 (122) and the outer side of the upper end of the pin shaft (4) are adapted to each other, the lower end of the protective sleeve (12) is tightly fitted with the surface of the pressure plate body (3), and the protective sleeve (12) is made of rubber.

7. The gate valve pressure plate fixing structure according to claim 1, characterized in that: The lower end of the shock-absorbing spring (13) is fixedly connected to the upper end of the protective sleeve (12), and the upper end of the shock-absorbing spring (13) is fixedly connected to the rotating plate (11).

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