CN212718081U - Valve core structure for plug board valve - Google Patents

Abstract

The utility model relates to a damping technology field of push-pull valve case specifically is a case structure that plug board valve was used for solving among the prior art when the steel ball returns in the ball socket from the plane of closing plate and backup pad, can bring great impact for closing plate and backup pad, thereby make the case produce the problem of great noise and vibration. The utility model discloses a closed plate, backup pad, ball socket, connecting plate, steel ball cover, steel ball and first mounting groove, two all open on the connecting plate and have the first waist shape hole that corresponds each other with first mounting groove, relative two install the buffer tube that passes first waist shape hole in the first mounting groove respectively, relative two install buffer spring between the buffer tube. The utility model discloses in when the steel ball returns in the ball socket, buffer spring will be compressed, and buffer spring can slow down the speed that backup pad and closing plate were withdrawed to play the cushioning effect to backup pad and closing plate, and then can reduce this case structure's vibration and noise.

Description

Valve core structure for plug board valve

Technical Field

The utility model relates to a damping technique field of case especially relates to the damping technique field of push-pull valve case, and more specifically relates to a case structure that plug board valve was used.

Background

A gate valve is an element of a vacuum valve for regulating the flow of gas and for cutting or connecting a pipe. The gate valve in the prior art comprises a valve body and a pneumatic propulsion mechanism, wherein flanges are arranged on two opposite outer side surfaces of the valve body, the valve body is provided with two coaxial valve ports, a valve core is arranged in the valve body, the valve core is often pushed to the valve ports through a cylinder shaft or a hinge mechanism, then a cam is used for tightly propping a sealing plate to seal the valve ports, and at the moment, fluid cannot pass through a pipeline; or the valve core is driven to be far away from the valve port through the cylinder shaft or the hinge mechanism, and at the moment, fluid can pass through the pipeline, so that the pipeline is switched on and off.

The valve core of the gate valve in the prior art comprises a closing plate and a supporting plate, two connecting plates which are parallel to each other are arranged between the closing plate and the supporting plate, a steel ball sleeve is fixedly welded between the two connecting plates, two steel balls are installed in the steel ball sleeve, ball sockets are arranged on the opposite surfaces of the closing plate and the supporting plate, the ball sockets are conical surfaces, the two steel balls are sealed in the ball sockets, a sealing ring is installed on the closing plate, the two connecting plates are connected with a power mechanism through a pushing block, one end of the connecting plate, which is far away from the power mechanism, is also connected with a limiting block, when the power mechanism pushes the two connecting plates, the steel ball sleeve and the steel ball to move as a whole towards the direction far away from the power mechanism, the steel balls are gradually pushed out from the steel ball sockets and welded on the connecting plates, the closing plate and the supporting plate are gradually spread by the steel balls, the sealing, the compression of the sealing ring reaches the maximum, so that the sealing function of the gate valve is realized, and fluid cannot pass through; when the steel ball retreats from the plane of the supporting plate and the closing plate to the steel ball socket under the action of the power mechanism, the sealing ring arranged on the closing plate is not compressed, and the gate valve is in an open state at the moment, so that fluid can pass through.

However, when the steel ball retreats from the plane of the closing plate and the supporting plate to the ball socket, the steel ball can enter the ball socket instantaneously from the plane of the closing plate and the supporting plate, and therefore large impact can be brought to the closing plate and the supporting plate, and the valve core generates large noise and vibration. Therefore, there is a strong need for a valve cartridge that is less noisy and vibrates.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model aims to provide a case structure that picture peg valve was used for solving among the prior art when the steel ball returns in the ball socket from the plane of closing plate and backup pad, can bring great impact for closing plate and backup pad to make the case produce the problem of great noise and vibration. The utility model discloses in when the steel ball returns in the ball socket, buffer spring will be compressed, and buffer spring can slow down the speed that backup pad and closing plate were withdrawed to play the cushioning effect to backup pad and closing plate, and then can reduce this case structure's vibration and noise.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a case structure that picture peg valve was used, includes closing plate and backup pad, all open the ball socket on the opposite face of closing plate and backup pad, be equipped with two connecting plates that are parallel to each other in closing plate and the backup pad, two the welding has a plurality of steel ball covers between the connecting plate, be equipped with two steel balls that can be located the ball socket of closing plate and backup pad respectively in the steel ball cover, all open on the opposite face of closing plate and backup pad has a plurality of first mounting grooves, two all open the first waist shape hole that has the mutual correspondence with first mounting groove on the connecting plate, relative two install the buffer cylinder that passes first waist shape hole in the first mounting groove respectively, relative two install buffer spring between the buffer cylinder.

The buffer cylinder is internally provided with a guide groove, the buffer spring is arranged in the guide groove, the buffer cylinder comprises an installation body and a guide body which are formed into a whole, and the diameter of the installation body is larger than that of the guide body.

Preferably, the mounting body is provided with a plurality of connecting holes, and the mounting body is connected with the closing plate or the supporting plate through screws penetrating through the connecting holes.

Two all open the welding groove on the relative position of connecting plate, the both ends of steel ball cover all are equipped with the shaft shoulder, the shaft shoulder is installed in the welding groove.

Preferably, rubber ring grooves are formed in the planes of the two ends of the steel ball sleeve, and damping rubber rings are installed in the rubber ring grooves.

Preferably, two all open on the connecting plate has second waist shape hole, it has the second mounting groove to open in the backup pad, install the guide cylinder that passes second waist shape hole in the second mounting groove, open the bottom surface of guide cylinder has logical groove, it has the ladder groove that corresponds with the second mounting groove to open on the closing plate, install in the guide cylinder and pass logical groove and weld the guiding axle at the ladder inslot, the nut that is located the guide cylinder is installed to the one end of guiding axle, install reset spring between the bottom surface in nut and the guide cylinder, guiding axle and logical inter-groove clearance fit.

Preferably, the ball socket is shaped as a spherical arc.

The utility model has the advantages as follows:

(1) the utility model discloses in when the steel ball returns in the ball socket, buffer spring will be compressed, and buffer spring can slow down the speed that backup pad and closing plate were withdrawed to play the cushioning effect to backup pad and closing plate, and then can reduce this case structure's vibration and noise.

(2) The utility model discloses the shaft shoulder at well steel ball cover both ends can be more accurate with the welding of steel ball cover on two connecting plates to required size and depth of parallelism between two connecting plates of assurance that can be more accurate.

(3) The utility model discloses all open the rubber ring groove on the both ends plane of well steel ball cover, the shock attenuation rubber ring is installed to the rubber ring inslot, and when the steel ball arrived on the plane of backup pad and closing plate, the shock attenuation rubber ring can contact with backup pad and closing plate, vibration and noise that reduction backup pad and closing plate that like this can be further.

(4) The utility model discloses in when the steel ball is located the ball socket of backup pad and closing plate, buffer spring by the precompression between backup pad and closing plate, like this when the steel ball is released the plane in-process buffer spring of backup pad and closing plate can exert a thrust for backup pad and closing plate, the steel ball of being convenient for is released.

(5) The utility model discloses well ball socket's shape is the spherical cambered surface, and the steel ball is released along with spherical cambered surface relatively coherent from the steel ball socket, and the resistance change that meets is little, can not take place the huge change of power to produce vibration and noise when reduction backup pad that can be very big and closure plate are strutted.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the supporting plate and the closing plate of the present invention when they are not supported by the steel balls;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the supporting plate and the closing plate of the present invention when they are spread by the steel ball;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4 according to the present invention;

FIG. 6 is a schematic cross-sectional view of the closure plate of the present invention;

fig. 7 is a schematic view of the sectional structure of the support plate of the present invention;

FIG. 8 is a schematic view of the buffer spring of the present invention installed in two buffer cylinders;

FIG. 9 is a schematic view of the front sectional structure of the buffer spring of the present invention installed in two buffer cylinders;

FIG. 10 is a schematic view of the steel ball of the present invention mounted in the steel ball sleeve;

FIG. 11 is a schematic view of a front sectional structure of the steel ball of the present invention installed in the steel ball sleeve;

fig. 12 is a schematic view of the three-dimensional structure of the guide cylinder, the guide shaft and the return spring of the present invention when they are mounted together;

fig. 13 is a schematic front sectional view of the guide cylinder, the guide shaft and the return spring of the present invention when they are mounted together;

reference numerals: the damping rubber ring comprises a supporting plate 1, a second mounting groove 101, a connecting plate 2, a second waist-shaped hole 21, a first waist-shaped hole 22, a sealing plate 3, a stepped groove 31, a buffer cylinder 4, a mounting body 41, a connecting hole 411, a guide groove 42, a guide body 43, a buffer spring 5, a guide cylinder 6, a guide groove 61, a guide shaft 7, a steel ball sleeve 8, a rubber ring groove 81, a shaft shoulder 82, a steel ball 9, a sealing ring 10, a reset spring 11, a first mounting groove 12, a ball socket 13, a damping rubber ring 14 and a nut 15.

Detailed Description

For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.

Example 1:

as shown in fig. 1-9, a valve core structure for a plug-in valve comprises a closing plate 3 and a supporting plate 1, ball sockets 13 are respectively arranged on opposite surfaces of the closing plate 3 and the supporting plate 1, two parallel connecting plates 2 are arranged in the closing plate 3 and the supporting plate 1, a plurality of steel ball sleeves 8 are welded between the two connecting plates 2, two steel balls 9 which can be respectively arranged in the ball sockets 13 of the closing plate 3 and the supporting plate 1 are arranged in the steel ball sleeves 8, a plurality of first mounting grooves 12 are respectively arranged on the opposite surfaces of the closing plate 3 and the supporting plate 1, first kidney-shaped holes 22 which correspond to the first mounting grooves 12 are respectively arranged on the two connecting plates 2, buffer cylinders 4 which penetrate the first kidney-shaped holes 22 are respectively arranged in the two opposite first mounting grooves 12, and buffer springs 5 are arranged between the two opposite buffer cylinders 4.

Wherein, the buffer cylinder 4 is internally provided with a guide groove 42, the buffer spring 5 is arranged in the guide groove 42, the buffer cylinder 4 comprises an installation body 41 and a guide body 43 which are mutually formed into a whole, the diameter of the installation body 41 is larger than that of the guide body 43, the installation body 41 is provided with a plurality of connecting holes 411, and the installation body 41 is connected with the closing plate 3 or the supporting plate 1 through screws passing through the connecting holes 411.

The working principle is as follows: the width of the first kidney-shaped holes 22 is determined by the size of the buffer cylinder 4 assembled on the supporting plate 1 and the closing plate 3, the length of the first kidney-shaped holes 22 is determined by the designed movement stroke of the steel balls 9, and the number of the first kidney-shaped holes 22 is determined by the designed number of the buffer springs 5 respectively. When the steel ball 9 is gradually pushed out from the ball socket 13 by the steel ball sleeve 8 on the welding piece of the connecting plate 2, the sealing rubber ring on the closing plate 3 is gradually compressed, the advancing resistance of the steel ball 9 is gradually increased, when the steel ball 9 is finally pushed out by the steel ball sleeve 8 and reaches the plane of the closing plate 3 and the supporting plate 1, the resistance of the steel ball 9 is instantly reduced to the minimum, but the compression of the sealing rubber ring is maximum, so that the sealing effect is achieved. When the steel ball 9 is pushed out to the plane of the supporting plate 1 and the closing plate 3, the buffer spring 5 can apply a pushing force to the supporting plate 1 and the closing plate, so that the steel ball 9 can be conveniently pushed out. On the contrary, when the steel ball 9 retreats from the plane of the supporting plate 1 and the closing plate to the corresponding ball socket 9, the buffer spring 5 has stronger buffer and vibration reduction effects on the supporting plate 1 and the closing plate 3, thereby reducing the vibration and the noise of the valve core structure.

Example 2:

as shown in fig. 1 to 11, this embodiment provides a preferable structure that can further reduce the vibration and noise of the valve body on the basis of embodiment 1 described above. Namely, welding grooves are formed in the relative positions of the two connecting plates 2, shaft shoulders 82 are arranged at the two ends of the steel ball sleeve 8, and the shaft shoulders 82 are arranged in the welding grooves. The shaft shoulders 82 at the two ends of the steel ball sleeve 8 can more accurately weld the steel ball sleeve 8 on the two connecting plates 2, and can more accurately ensure the required size and parallelism between the two connecting plates 2.

Rubber ring grooves 81 are formed in the two end planes of the steel ball sleeve 8, and damping rubber rings 14 are installed in the rubber ring grooves 81. When the steel balls 9 reach the plane of the supporting plate 1 and the closing plate 3, the damping rubber ring 14 can contact with the supporting plate 1 and the closing plate 3, so that the vibration and the noise of the supporting plate 1 and the closing plate 3 can be further reduced.

Example 3:

as shown in fig. 1 to 13, this embodiment provides a preferable structure that can connect the support plate 1 and the closing plate 3 more stably on the basis of the above embodiment 1. All opened second waist shape hole 21 on two connecting plates 2 promptly, it has second mounting groove 101 to open in backup pad 1, install the guide cylinder 6 that passes second waist shape hole 21 in the second mounting groove 101, open the bottom surface of guide cylinder 6 has logical groove 61, it has the ladder groove 31 that corresponds with second mounting groove 101 to open on the closing plate 3, install the guiding axle 7 that passes logical groove 61 and weld in ladder groove 31 in the guide cylinder 6, nut 15 that is located guide cylinder 6 is installed to the one end of guiding axle 7, install reset spring 11 between the bottom surface in nut 15 and the guide cylinder 6, clearance fit between guiding axle 7 and logical groove 61.

The utility model discloses in: the connecting plate 2, the supporting plate 1 and the closing plate 3 are tensioned into a whole through a return spring 11, under the limitation of a steel ball sleeve 8, the initial position of a steel ball 9 is tensioned in a ball socket 13 on the supporting plate 1 and the closing plate 3 through the return spring 11, so that the supporting plate 1 and the closing plate are separated by the steel ball 9 by an initial height distance, the size of the separation distance is determined by the size of the steel ball 9, the number of the overlapped steel balls 9 and the depth of the ball socket 13 designed on the supporting plate 1 and the closing plate 3, the whole connecting plate 2 is always positioned in the middle part of the height distance, the steel ball 9 is limited not to roll randomly, but the steel ball 9 can do linear reciprocating motion along with the connecting plate 2, the motion distance is determined by design requirements and finally limited by the size of a second kidney-shaped hole 21, the length of the second kidney-shaped hole 21 is determined by the motion stroke of the designed steel ball 9, during the movement, the guide shaft 7 can move along the length direction of the through groove 61.

Example 4:

as shown in fig. 6 to 7, this embodiment provides a preferable structure that can further reduce the vibration and noise of the valve body on the basis of the above embodiments 1 to 3. Namely, the ball socket 13 is in the shape of a spherical cambered surface, the steel ball 9 is pushed out of the ball socket 13 continuously along with the spherical cambered surface, the encountered resistance change is small, and the great change of force cannot occur, so that the vibration and noise generated when the supporting plate 1 and the closing plate 3 are propped open can be greatly reduced.

The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a case structure that picture peg valve was used, includes closing plate (3) and backup pad (1), ball socket (13) have all been opened on the opposite face of closing plate (3) and backup pad (1), be equipped with two connecting plates (2) that are parallel to each other in closing plate (3) and backup pad (1), two the welding has a plurality of steel ball cover (8) between connecting plate (2), be equipped with two steel ball (9) that can be located ball socket (13) of closing plate (3) and backup pad (1) respectively in steel ball cover (8), its characterized in that: all open on the opposite face of closing plate (3) and backup pad (1) and have a plurality of first mounting groove (12), two all open on connecting plate (2) and have first waist shape hole (22) that correspond each other with first mounting groove (12), relative two install buffer cylinder (4) that pass first waist shape hole (22), relative two respectively in first mounting groove (12) install buffer spring (5) between buffer cylinder (4).

2. The valve core structure for a plug-in valve according to claim 1, wherein: guide way (42) have been seted up in buffer cylinder (4), buffer spring (5) are installed in guide way (42), buffer cylinder (4) are including installation body (41) and guide body (43) of mutual shaping as an organic whole, the diameter of installation body (41) is greater than the diameter of guide body (43).

3. The valve core structure for a plug-in valve according to claim 2, wherein: the mounting body (41) is provided with a plurality of connecting holes (411), and the mounting body (41) is connected with the closing plate (3) or the supporting plate (1) through screws penetrating through the connecting holes (411).

4. The valve core structure for a plug-in valve according to claim 1, wherein: two all open the welding groove on the relative position of connecting plate (2), the both ends of steel ball cover (8) all are equipped with shaft shoulder (82), shaft shoulder (82) are installed in the welding groove.

5. The valve core structure for a plug-in valve according to claim 4, wherein: rubber ring grooves (81) are formed in the planes of the two ends of the steel ball sleeve (8), and damping rubber rings (14) are installed in the rubber ring grooves (81).

6. The valve core structure for a plug-in valve according to claim 1, wherein: two all open on connecting plate (2) and have second waist shape hole (21), it has second mounting groove (101) to open on backup pad (1), install guide cylinder (6) that pass second waist shape hole (21) in second mounting groove (101), open the bottom surface of guide cylinder (6) has logical groove (61), it has ladder groove (31) that correspond with second mounting groove (101) to open on closing plate (3), install guide shaft (7) that pass logical groove (61) and welding in ladder groove (31) in guide cylinder (6), nut (15) that are located guide cylinder (6) are installed to the one end of guide shaft (7), install reset spring (11) between the bottom surface in nut (15) and guide cylinder (6), guide shaft (7) and lead to clearance fit between groove (61).

7. A cartridge structure for a plug-in valve according to any one of claims 1 to 6, wherein: the ball socket (13) is in the shape of a spherical cambered surface.

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