Shaft hub enlarged valve plate of double-shaft butterfly valve

Abstract

The utility model relates to a double-shaft butterfly valve shaft hub enlarged valve plate which comprises a shell, a second driving shaft, a valve plate body and a fixing block, bearing seats are arranged on the upper side and the lower side of the inner wall of the shell respectively, a first driving shaft and a second driving shaft are rotationally installed in the two bearing seats respectively, and a connecting block is arranged on one side of the outer wall of the first driving shaft. A valve plate body is mounted on the outer wall of one end of the connecting block, a water through hole is formed in the outer wall of one side of the valve plate body, a connecting shaft is mounted on one side of the outer wall of the upper end of the second driving shaft, a fixing block is mounted on one side of the outer wall of the connecting shaft, a sliding groove is formed in the outer wall of the fixing block, and a sliding block is slidably mounted in the sliding groove; a connecting plate is installed on the outer wall of the end, penetrating through the sliding groove, of the sliding block, a baffle is installed on the outer wall of one end of the connecting plate, and the purpose of adjusting the pressure difference of the two sides of the valve plate body is achieved, so that the compressive strength of the valve plate body can be relieved, the follow-up opening difficulty of the valve plate body can be reduced, and the rotation smoothness of the valve plate body is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely relates to a double axle butterfly valve axle hub enlarged valve plate. BACKGROUND

[0002] Double axle butterfly valve, also called high performance butterfly valve, is a kind of valve improved from single eccentric butterfly valve, its design allows effective work in high pressure and high temperature environment, the main feature of this butterfly valve is that the shaft center of valve rod deviates from the center of butterfly plate and the center of body, the enlarged valve plate of axle hub refers to the valve plate of large size, when the size of external pipeline is clear, the flow rate of medium can be improved through large size butterfly valve and valve plate.

[0003] The butterfly valve in the prior art has many benefits in use, but still has the following problems, the opening fluency of the valve plate is not perfect, when the butterfly valve is connected with the external pipeline, the pressure of the medium in the pipeline extrudes the valve plate, and the pressure on both sides of the valve plate is inconsistent, so that the opening difficulty of the valve plate is high. UTILITY MODEL CONTENTS

[0004] In view of the problems in the prior art, the utility model provides a double axle butterfly valve axle hub enlarged valve plate.

[0005] The utility model discloses a double axle butterfly valve axle hub enlarged valve plate, which adopts the technical scheme that a kind of double axle butterfly valve axle hub enlarged valve plate, including shell, second drive shaft, valve plate body and fixed block, the shell inner wall upper and lower sides are all provided with bearing seat, two The first drive shaft and second drive shaft are respectively rotatably installed in the bearing seat, the first drive shaft outer wall one side is provided with connecting block, the connecting block one end outer wall is installed with valve plate body, the valve plate body one side outer wall is equipped with water hole, the second drive shaft upper end outer wall one side is installed with connecting shaft, the connecting shaft outer wall one side is installed with fixed block, the fixed block outer wall is equipped with sliding slot, the sliding slot is slidably installed with sliding block, the sliding block penetrates the sliding slot one end outer wall and is installed with connecting plate, the connecting plate one end outer wall is installed with baffle.

[0006] By adopting the above technical scheme, the external driving motor can drive the first drive shaft and the second drive shaft to rotate respectively, and the valve plate body controls the on-off of the shell. The medium on the outside of the valve plate body can flow to the other side through the water hole.

[0007] Specifically, the connecting block is provided with a bolt on the outer wall of both sides, and the connecting block is connected with the first drive shaft through the bolt.

[0008] By adopting the above technical scheme, the bolt can connect the connecting block and the first drive shaft, so that the external driving motor can drive the first drive shaft and the valve plate body to rotate, thereby controlling the use angle of the valve plate body.

[0009] Specifically, the sealing ring is fixedly attached to the outer wall of the valve plate body and contacts the inner wall of the shell.

[0010] By adopting the above technical scheme, the valve plate body is sealed with the inner wall of the shell by the sealing ring, the inside of the shell is blocked, and the on-off of the medium in the shell is controlled.

[0011] Specifically, the embedding groove is formed in one side of the outer wall of the lower end of the first driving shaft, and the connecting shaft is rotatably installed in the embedding groove.

[0012] By adopting the above technical scheme, the connecting shaft can rotate in the embedding groove, and the first driving shaft and the second driving shaft can be connected through the connecting shaft and the embedding groove, so that the pressure strength of the first driving shaft is ensured.

[0013] Specifically, the plug is installed on one side of the outer wall of the baffle away from the connecting plate, the plug is located in the water passage, and the outer wall of one side of the plug is designed in a conical shape.

[0014] By adopting the above technical scheme, the plug can move horizontally in the water passage, and the plug can block the water passage.

[0015] Specifically, the sealing gasket is fixedly attached to the outer wall of the baffle and contacts the outer wall of the valve plate body.

[0016] By adopting the above technical scheme, the baffle drives the sealing gasket to move, so that the sealing gasket can extrude the outer wall of the valve plate body, and the water passage is further blocked by the baffle and the sealing gasket.

[0017] Specifically, the sliding groove is designed in a circular arc shape, and the outer wall of the sliding block is designed in a convex shape.

[0018] By adopting the above technical scheme, the sliding block can slide according to the shape of the sliding groove, and the use position of the sliding block can be adjusted.

[0019] The beneficial effects of the utility model are as follows:

[0020] (1) The double-shaft butterfly valve hub enlarged valve plate can make the medium on the outer side of the valve plate body flow into the inner side of the valve plate body through the gap between the water passage and the plug, so that the pressure difference on both sides of the valve plate body is adjusted, the pressure strength of the valve plate body is relieved, the subsequent opening difficulty of the valve plate body is reduced, and the rotation fluency of the valve plate body is ensured.

[0021] (2) The double-shaft butterfly valve axle hub enlarged valve plate, the baffle and the plug can block the water hole, ensure that the flow is directly controlled in the water hole, and the driving connecting block and the valve plate body rotate to connect the inside of the shell, and the medium in the shell can be controlled. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model is further described below in combination with the drawings and examples.

[0023] Figure 1 It is second drive shaft structure exploded schematic view of the utility model;

[0024] Figure 2 It is shell structure appearance schematic view of the utility model;

[0025] Figure 3 It is connecting block structure enlarged schematic view of the utility model;

[0026] Figure 4 It is valve plate body structure enlarged schematic view of the utility model;

[0027] Figure 5 It is fixed block structure turnover exploded schematic view of the utility model.

[0028] In the drawing: 1, shell; 11, bearing seat; 12, first drive shaft; 13, connecting block; 14, bolt; 15, valve plate body; 16, sealing ring; 17, water hole; 18, fitting groove; 2, second drive shaft; 21, connecting shaft; 22, fixed block; 23, sliding slot; 24, connecting plate; 25, baffle; 26, sealing pad; 27, plug; 28, sliding block. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0030] In order to save manpower and improve efficiency, as an embodiment of the utility model, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5The utility model discloses a double shaft butterfly valve axle hub enlarged valve plate, including shell 1, second drive shaft 2, valve plate body 15 and fixed block 22, the both sides of upper and lower of shell 1 inner wall are all provided with bearing seat 11, and the first drive shaft 12 and second drive shaft 2 are rotatably installed in two bearing seats 11 respectively, and the outer wall one side of first drive shaft 12 is provided with connecting block 13, and the outer wall one end of connecting block 13 is installed with valve plate body 15, and the outer wall of one side of valve plate body 15 is provided with water hole 17, and the outer wall one side of second drive shaft 2 upper end is installed with connecting shaft 21, and the outer wall one side of connecting shaft 21 is installed with fixed block 22, and the outer wall of fixed block 22 is provided with sliding slot 23, and the sliding block 28 is slidably installed in the inside of sliding slot 23, and the outer wall one end of sliding block 28 is installed with connecting plate 24, and the outer wall one end of connecting plate 24 is installed with baffle 25.

[0031] In use, the external drive motor can drive the first drive shaft 12 and the second drive shaft 2 to rotate respectively, and the valve plate body 15 controls the on-off of the inside of the shell 1. The medium outside the valve plate body 15 can flow to the other side through the water hole 17.

[0032] In order to fix the valve plate body 15, for example, as shown, Figure 3 The outer wall of the connecting block 13 is provided with a bolt 14 on both sides, and the connecting block 13 is connected to the first drive shaft 12 by the bolt 14.

[0033] In use, the bolt 14 can connect the connecting block 13 and the first drive shaft 12, so that the external drive motor can drive the first drive shaft 12 and the valve plate body 15 to rotate, thereby controlling the use angle of the valve plate body 15.

[0034] In order to seal, for example, as shown, Figure 3 The outer wall of the valve plate body 15 is fixed with a sealing ring 16, and the sealing ring 16 is in contact with the inner wall of the shell 1.

[0035] In use, the valve plate body 15 ensures the sealing between the inner wall of the shell 1 by the sealing ring 16, which can block the inside of the shell 1, and ensure that the on-off of the medium in the shell 1 is controlled.

[0036] In order to ensure the pressure strength of the first drive shaft 12, for example, as shown, Figure 1 The outer wall of the first drive shaft 12 is provided with an embedded groove 18 on one side of the lower end, and the connecting shaft 21 is rotatably installed in the embedded groove 18.

[0037] In use, the connecting shaft 21 can rotate in the embedded groove 18, and the first drive shaft 12 and the second drive shaft 2 can be connected by the connecting shaft 21 and the embedded groove 18, thereby ensuring the pressure strength of the first drive shaft 12.

[0038] In order to plug the water hole 17, for example, as shown,Figure 5 As shown in the drawings, the outer wall of the baffle plate 25 away from the connecting plate 24 is provided with a plug 27, the plug 27 is located inside the water hole 17, and the outer wall of the plug 27 is designed in a conical shape.

[0039] In use, the plug 27 can move horizontally inside the water hole 17, and the plug 27 can block the water hole 17.

[0040] In order to seal, for example, as shown in the drawings, Figure 5 As shown in the drawings, the outer wall of the baffle plate 25 is fixedly connected with a sealing gasket 26, and the sealing gasket 26 is in contact with the outer wall of the valve plate body 15.

[0041] In use, the baffle plate 25 drives the sealing gasket 26 to move, so that the sealing gasket 26 can extrude the outer wall of the valve plate body 15, and the baffle plate 25 and the sealing gasket 26 further block the water hole 17.

[0042] In order to adjust the use position of the plug 27, for example, as shown in the drawings, Figure 5 As shown in the drawings, the sliding groove 23 is designed in a circular arc shape, and the outer wall of the sliding block 28 is designed in a convex shape.

[0043] In use, the sliding block 28 can slide according to the shape of the sliding groove 23, so that the use position of the sliding block 28 can be adjusted.

[0044] In use, the external driving motor can drive the second driving shaft 2 to rotate circularly inside the bearing, so that the connecting shaft 21 and the fixed block 22 rotate, the sliding block 28 keeps the position relatively stable through the plug 27, so that the sliding block 28 does not rotate with the fixed block 22, and according to the position change of the sliding groove 23, the plug 27 can be driven to move horizontally, so that the sealing ring 16 is separated from the valve plate body 15, so that the medium outside the valve plate body 15 can flow into the inside of the valve plate body 15 through the gap between the water hole 17 and the plug 27, and the purpose of adjusting the pressure difference on both sides of the valve plate body 15 is achieved, so that the pressure intensity of the valve plate body 15 can be relieved, the subsequent opening difficulty of the valve plate body 15 can be reduced, and the rotation fluency of the valve plate body 15 is ensured.

[0045] After the above-mentioned pressure difference adjusting step, the driving motor drives the second driving shaft 2 to reverse, so that the plug 27 is reset, the sealing gasket 26 can extrude the valve plate body 15, and the baffle plate 25 and the plug 27 can block the water hole 17, so that the medium directly controlled inside the water hole 17 can flow;

[0046] The two driving motors drive the first driving shaft 12 and the second driving shaft 2 to rotate at the same speed and in the same direction, so that the connecting block 13 and the valve plate body 15 can be driven to rotate, the inside of the shell 1 is communicated, and the on-off of the medium in the shell 1 can be controlled;

[0047] The first driving shaft 12 and the second driving shaft 2 can be connected and the first driving shaft 12 can be supported through the chimeric groove 18 and the connecting shaft 21, so that the pressure bearing strength of the valve plate body 15 is ensured.

[0048] It should be noted that the utility model is a kind of double-shaft butterfly valve axle hub enlarged valve plate, components in the utility model are components known to those skilled in the art, and its structure and principle are known to those skilled in the art by technical manual or by conventional experimental method.

[0049] The basic principle, main features and advantages of the utility model are shown and described above.The skilled person in the art should understand that the utility model is not limited by the above-described embodiments, and the above-described embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A double-axis butterfly valve hub with an enlarged valve plate, characterized in that: The invention comprises a housing (1), a second drive shaft (2), a valve plate body (15) and a fixing block (22), wherein the housing (1) is provided with bearing seats (11) on both upper and lower sides of the inner wall, the first drive shaft (12) and the second drive shaft (2) are rotatably mounted inside the two bearing seats (11), a connecting block (13) is provided on one side of the outer wall of the first drive shaft (12), the outer wall of one end of the connecting block (13) is provided with a valve plate body (15), and one side of the valve plate body (15) is provided with a connecting block (13). A water hole (17) is provided on the outer wall, a connecting shaft (21) is installed on one side of the outer wall of the upper end of the second driving shaft (2), a fixing block (22) is installed on one side of the outer wall of the connecting shaft (21), a sliding groove (23) is provided on the outer wall of the fixing block (22), a slider (28) is slidably installed inside the sliding groove (23), the slider (28) passes through the outer wall of one end of the sliding groove (23), and a connecting plate (24) is installed on the outer wall of one end of the connecting plate (24), and a baffle (25) is installed on the outer wall of one end of the connecting plate (24).

2. A dual-axis butterfly valve hub with enlarged valve plate according to claim 1, characterized in that: Bolts (14) are provided on both sides of the outer walls of the connecting block (13), and the connecting block (13) is connected to the first drive shaft (12) via the bolts (14).

3. The double-axis butterfly valve hub with enlarged valve plate according to claim 1, characterized in that: A sealing ring (16) is fixedly attached to the outer wall of the valve plate body (15), and the sealing ring (16) is in contact with the inner wall of the outer shell (1).

4. The double-axis butterfly valve hub with enlarged valve plate according to claim 1, characterized in that: An engaging groove (18) is provided on one side of the outer wall of the lower end of the first driving shaft (12), and one side of the connecting shaft (21) is rotatably mounted inside the engaging groove (18).

5. The double-axis butterfly valve hub with enlarged valve plate according to claim 1, characterized in that: A plug (27) is installed on the outer wall of the baffle (25) on the side facing away from the connecting plate (24). The plug (27) is located inside the water hole (17). The outer wall of one side of the plug (27) is designed in a conical shape.

6. The double-axis butterfly valve hub with enlarged valve plate according to claim 1, characterized in that: A sealing gasket (26) is fixedly attached to the outer wall of the baffle (25), and the sealing gasket (26) is in contact with the outer wall of the valve plate body (15).

7. The double-axis butterfly valve hub with enlarged valve plate according to claim 1, characterized in that: The sliding groove (23) is designed in an arc shape, and the outer wall of the sliding block (28) is designed in a convex shape.

Images