Valve with good sealing performance

Abstract

The utility model relates to the technical field of valves, in particular to a valve with good sealing performance, which comprises a valve body and a valve cover, a threaded groove is arranged at the center of the valve cover and is in threaded connection with a screw rod, a support table is fixedly sleeved on the lower portion of the outer side of the screw rod, and a ball is arranged at the top end of the support table. The supporting table is used for installing and placing the base, a bearing is fixedly installed in the base and movably connected to the outer side of the screw in a sleeving mode, the top end of the base is fixedly connected with the bottom end of a spring, the spring is connected to the outer side of the screw in a sleeving mode, and the top end of the spring is fixedly connected with the bottom end of a connecting plate. And a second sealing ring is arranged at the top end of the connecting plate. By arranging the spring, the second sealing ring can be pushed to abut against the threaded groove in the bottom of the valve deck all the time, in this way, the second sealing ring can provide the sealing effect for the valve deck all the time, when the screw is rotated, the spring is compressed by pushing the base upwards, and therefore the sealing effect of the second sealing ring is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a valve with good sealing property. BACKGROUND

[0002] Valve is used for opening and closing pipeline, controls flow direction, adjusts and controls the parameter of pipeline accessory of conveying medium, according to its function, can be divided into shut-off valve, check valve and regulating valve etc., valve is the control component in fluid conveying system, has the functions such as cut-off, regulation, flow guide, prevent backflow, pressure stabilization, shunt and overflow pressure relief, and is used for the valve of fluid control system, from the simplest cut-off valve to the various valves used in the extremely complicated automatic control system, its variety and specification are quite numerous.

[0003] In application number: CN202123445145.7, a valve with good sealing property is disclosed, which is convenient to fix the valve seat under the action of the telescopic rod and the spring, when the rubber pad is damaged, the spring pushes the valve seat to move downward, to avoid water flow through the rubber pad as much as possible, improve the sealing property of the device, at the same time, the sealing property of the device is further improved under the action of the first sealing ring and the second sealing ring.

[0004] But the second sealing ring of the sealing valve needs to be abutted against the bottom of the thread groove under the condition that the screw rod rotates a certain number of turns, which leads to that if the rotation number of the screw rod is not enough, the second sealing ring cannot provide sealing effect for the thread groove, therefore a valve with good sealing property is proposed. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model provides a valve with good sealing property.

[0006] The utility model solves the technical scheme that adopts a valve with good sealing property, including valve body and valve cover, the valve cover is installed in the top of valve body, the top of valve body is fixedly connected with valve cover through bolt, the center of valve cover is equipped with thread groove and screw rod thread connection, the outside lower part of screw rod is fixedly sleeved with support table, the top of support table is equipped with ball, support table is used for installing and placing base, the inside of base is fixedly installed with bearing, the outside of screw rod is movably sleeved with bearing;

[0007] The top of base is fixedly connected with the bottom end of spring, the spring is sleeved on the outside of screw rod, the top of spring is fixedly connected with the bottom end of connecting plate, the top of connecting plate is equipped with second sealing ring.

[0008] Through the arrangement of the spring, the second sealing ring can be pushed against the threaded groove at the bottom of the valve cover, so that the second sealing ring can provide sealing effect for the valve cover all the time, and when the screw rod is rotated to make water flow in the valve body, the base is pushed upward to compress the spring, and the spring is compressed to enhance the pushing force on the second sealing ring, so that the sealing effect of the second sealing ring is enhanced.

[0009] Specifically, the bottom end of the screw rod is fixedly connected with the top end of the sealing block, the sealing block is a semicircular body, and the outer peripheral wall of the sealing block is tightly attached to the inner peripheral wall of the valve seat.

[0010] Through the arrangement of the sealing block, the valve seat can be blocked, so that water in the valve body cannot flow.

[0011] Specifically, the bottom end of the valve cover is fixedly connected with the top end of the spring telescopic rod, two spring telescopic rods are arranged, and the valve seat is connected with the valve cover through the two spring telescopic rods.

[0012] Through the arrangement of the spring telescopic rod, the sealing effect of the valve seat in the valve body can be enhanced.

[0013] Specifically, the top end of the valve body is provided with a sealing groove, and the sealing groove is used for clamping installation of the first sealing ring.

[0014] Through the arrangement of the first sealing ring in the sealing groove, the sealing property between the valve cover and the valve body can be enhanced.

[0015] Specifically, one end of the valve body is provided with a water inlet, the other end of the valve body is provided with a water outlet, the inside of the valve body is provided with a valve body cavity, the water inlet is communicated with the valve body cavity, and the water outlet is communicated with the valve body cavity.

[0016] Through the arrangement of the above technical scheme, water flows into the inside of the valve body through the water inlet, passes through the valve seat to the valve body cavity, and finally flows out from the water outlet.

[0017] The utility model discloses a beneficial effect:

[0018] The utility model discloses a valve with good sealing property, through the arrangement of the spring, the second sealing ring can be pushed against the threaded groove at the bottom of the valve cover, so that the second sealing ring can provide sealing effect for the valve cover all the time, and when the screw rod is rotated to make water flow in the valve body, the base is pushed upward to compress the spring, and the spring is compressed to enhance the pushing force on the second sealing ring, so that the sealing effect of the second sealing ring is enhanced. ACCURACY OF DRAWINGS

[0019] The utility model is further illustrated below in combination with the drawings and embodiments.

[0020] Fig. 1 It is a plane structure schematic view of the utility model;

[0021] Fig. 2 It is a three-dimensional structure schematic view of the utility model;

[0022] Fig. 3 It is a valve body structure schematic view of the utility model;

[0023] In the drawing: 1, valve body; 2, bolt; 3, first sealing ring; 4, valve cover; 5, screw rod; 6, second sealing ring; 7, connecting plate; 8, spring; 9, water inlet; 10, base; 11, bearing; 12, sealing block; 13, support platform; 14, valve seat; 15, ball; 16, water outlet; 17, sealing groove; 18, valve body inner cavity; 19, spring telescopic rod. Specific implementation

[0024] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further illustrated below in combination with specific implementation.

[0025] As an embodiment of the utility model, as shown in the drawing, Figs. 1-3 A valve with good sealing performance comprises a valve body 1 and a valve cover 4, the valve cover 4 is snap-fitted and installed at the top end of the valve body 1, the top end of the valve body 1 is fixedly connected with the valve cover 4 through a bolt 2, a threaded groove is formed in the center of the valve cover 4 and is threadedly connected with a screw rod 5, a support platform 13 is fixedly sleeved on the outer lower part of the screw rod 5, the top end of the support platform 13 is provided with a ball 15, and the support platform 13 is used for placing a base 10; the base 10 is internally fixedly provided with a bearing 11, and the bearing 11 is movably sleeved on the outer side of the screw rod 5.

[0026] The top end of the base 10 is fixedly connected with the bottom end of a spring 8, the spring 8 is sleeved on the outer side of the screw rod 5, the top end of the spring 8 is fixedly connected with the bottom end of a connecting plate 7, and the top end of the connecting plate 7 is provided with a second sealing ring 6.

[0027] In use, the second sealing ring 6 can provide a sealing effect on the threaded groove at the bottom of the valve cover 4 at all times due to the arrangement of the spring 8, and the sealing effect of the second sealing ring 6 can be enhanced when the screw rod 5 rotates.

[0028] The utility model also comprises that the bottom end of the screw rod 5 is fixedly connected with the top end of a sealing block 12, the sealing block 12 is a semicircular body, and the outer peripheral wall of the sealing block 12 is tightly attached to the inner peripheral wall of a valve seat 14.

[0029] In use, the sealing block 12 can block the valve seat 14, so that the water in the valve body 1 cannot flow.

[0030] The utility model also includes, the bottom of valve cover 4 with spring telescopic rod 19 top fixed connection, spring telescopic rod 19 are equipped with two, valve seat 14 pass through two spring telescopic rod 19 with valve cover 4 are connected.

[0031] In use, the sealing effect of the valve seat 14 in the valve body 1 can be enhanced by the provision of the spring telescopic rod 19, and the specific working principle can be referred to the existing mature technology mentioned in the background art.

[0032] The utility model also includes, the top of valve body 1 is equipped with sealing groove 17, sealing groove 17 are used for first sealing ring 3 joint installation.

[0033] In use, the sealing effect of the valve seat 14 in the valve body 1 can be enhanced by the provision of the spring telescopic rod 19, and the specific working principle can be referred to the existing mature technology mentioned in the background art.

[0034] The utility model also includes, one end of valve body 1 is equipped with water inlet 9, the other end of valve body 1 is equipped with water outlet 16, the inside of valve body 1 is equipped with valve body inner chamber 18, water inlet 9 with valve body inner chamber 18 communication, water outlet 16 with valve body inner chamber 18 communication.

[0035] In use, the water flow enters the inside of the valve body 1 through the water inlet 9, passes through the valve seat 14 to the valve body inner chamber 18, and finally flows out from the water outlet 16.

[0036] In use, the water from the water inlet 9 enters the inside of the valve body 1, and the sealing block 12 can be rotated and moved upward by rotating the top of the screw rod 5, so that the sealing block 12 will not seal the valve seat 14 again. Subsequently, the water passes through the valve seat 14 into the valve body inner chamber 18, and finally flows out from the water outlet 16. During the use of the valve body 1, the connecting plate 7 and the second sealing ring 6 are always pushed upward by the spring 8, which can ensure that the second sealing ring 6 can always provide a sealing effect to the threaded groove of the valve cover 4. When the screw rod 5 is rotated to make the valve body inner chamber 18 water, the screw rod 5 will drive the support table 13 to rotate and move upward. The support table 13 is provided with the ball 15, so that the rotation of the support table 13 will not drive the base 10 to rotate. In combination with the bearing 11 sleeved on the outside of the screw rod 5, the rotation of the screw rod 5 will also not drive the base 10 to rotate. In this way, the base 10 can only be driven to move upward, so as to compress the spring 8 and enhance the sealing effect of the second sealing ring 6.

[0037] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A valve with good tightness comprising a valve body (1) and a bonnet (4), characterized in that, The valve cover (4) is buckled and installed on the top end of the valve body (1), the top end of the valve body (1) is fixedly connected with the valve cover (4) through the bolt (2), the center of the valve cover (4) is provided with a threaded groove, and the threaded rod (5) is threadedly connected with the threaded groove, the outer lower portion of the threaded rod (5) is fixedly sleeved with the supporting table (13), the top end of the supporting table (13) is provided with the ball (15), and the supporting table (13) is used for mounting and placing the base (10); the base (10) is internally fixedly installed with the bearing (11), and the bearing (11) is movably sleeved on the outer side of the threaded rod (5). The top end of the base (10) is fixedly connected with the bottom end of the spring (8), the spring (8) is sleeved on the outer side of the threaded rod (5), the top end of the spring (8) is fixedly connected with the bottom end of the connecting plate (7), and the top end of the connecting plate (7) is provided with the second sealing ring (6).

2. The valve of claim 1, wherein The bottom end of the threaded rod (5) is fixedly connected with the top end of the sealing block (12), the sealing block (12) is a semicircular body, and the outer peripheral wall of the sealing block (12) is tightly attached to the inner peripheral wall of the valve seat (14).

3. The valve of claim 2, wherein, The bottom end of the valve cover (4) is fixedly connected with the top end of the spring telescopic rod (19), the valve seat (14) is connected with the valve cover (4) through the two spring telescopic rods (19).

4. The valve of claim 1, wherein, The top end of the valve body (1) is provided with the sealing groove (17), and the first sealing ring (3) is clamped and installed in the sealing groove (17).

5. The valve of claim 1, wherein One end of the valve body (1) is provided with the water inlet (9), the other end of the valve body (1) is provided with the water outlet (16), the inside of the valve body (1) is provided with the valve body cavity (18), the water inlet (9) is communicated with the valve body cavity (18), and the water outlet (16) is communicated with the valve body cavity (18).

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