Quick closing double eccentric half ball valve

Abstract

The utility model discloses a kind of quick closing type double eccentric half ball valves, specifically related to the technical field of half ball valve, including valve body, the valve body front end and rear end are fixedly connected with connecting pipe, the connecting pipe rear end sliding connection has sealing device in front portion, the valve body outer surface upper portion is fixedly connected with connecting block, switch device is installed in the connecting block inner cavity.The utility model said a kind of quick closing type double eccentric half ball valve, sealing device is designed, when half ball valve is closed, sealing ring can be close to valve under the pressure of telescopic spring, so that the device has better sealing property, sealing ring is under the action of telescopic spring, has telescopic property, when rotating valve, it will not produce hard friction, protect the integrity of device, so that it will not produce gap;Switch device is designed, so that stepper motor drives valve will only rotate 90 degrees, so that it can just seal valve body, displacement excessive situation will not appear, improve the stability of device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of half ball valve, especially to a quick closing type double eccentric half ball valve. BACKGROUND

[0002] The eccentric half ball valve is a valve in which the center axis of the valve body and the center axis of the half ball are offset in size, and a sealing pair is arranged on one side of the valve body, and the valve is opened and closed by rotating the ball around the center line of the valve body.

[0003] The eccentric half ball valve is composed of a valve body, an eccentric shaft, a valve cover, a spherical crown, a shaft sleeve and a valve seat.

[0004] The existing half ball valve needs to be rotated manually when closing, and the closing speed is relatively slow. There is a gap in the closed state, so a quick closing type double eccentric half ball valve is needed.

[0005] Chinese patent No. CN210069009U discloses an eccentric half ball valve, which comprises an upper half eccentric half ball valve shell, a lower half eccentric half ball valve shell and an eccentric half ball valve part.

[0006] The above-mentioned patent still has the following shortcomings in the implementation process:

[0007] The above-mentioned patent lifts the sliding ring upward, rotates the valve rod, and rotates the valve rod and the rotating ring and the first limiting ring, which drives the ball to rotate, thereby completing the operation of opening and closing the eccentric half ball valve. Although this can achieve the purpose of opening and closing the half ball valve, the ball and the lower half eccentric half ball valve shell are in hard friction during rotation, and a gap may be generated between them after a long time, thereby reducing the sealing performance. UTILITY MODEL CONTENTS

[0008] The main purpose of the utility model is to provide a quick closing type double eccentric half ball valve, which can effectively solve the problem of the sealing performance of the eccentric half ball valve during quick closing.

[0009] To achieve the above-mentioned purpose, the utility model adopts the technical scheme:

[0010] A quick closing type double eccentric half ball valve, comprising a valve body, the valve body front end and rear end are both fixedly connected with a connecting pipe, the connecting pipe rear end at the front is slidably connected with a sealing device, the valve body outer surface upper part is fixedly connected with a connecting block, and the connecting block inner cavity is installed with an opening and closing device.

[0011] Preferably, the sealing device comprises four telescopic rods, the rear end annular array of the connecting pipe is provided with four circular grooves, the four telescopic rods are slidably connected in the inner cavities of the circular grooves, the front ends of the four telescopic rods are fixedly connected with telescopic springs, the rear ends of the four telescopic rods are fixedly connected with a sealing ring, and the rear portions of the inner cavities of the four circular grooves are fixedly connected with limiting plates.

[0012] Preferably, the outer surfaces of the four telescopic rods are slidably located in the inner cavities of the limiting plates on the same side.

[0013] Preferably, the switch device comprises a connecting column, the connecting column is rotatably connected in the inner cavity of the connecting block, the lower end of the connecting column is rotatably connected with a rotating plate, the front end of the rotating plate is fixedly connected with a valve, the upper portion of the inner cavity of the connecting column is fixedly connected with a limiting ring, the inner surface of the limiting ring is rotatably connected with a transmission rod, the upper end of the transmission rod is fixedly connected with a stepping motor, the front side of the upper portion of the outer surface of the transmission rod is fixedly connected with a rectangular plate, the upper portion of the inner cavity of the connecting column is fixedly connected with a limiting ring, the vertical surfaces of the limiting ring are provided with rectangular grooves, and the inner cavities of the two rectangular grooves are fixedly connected with monitoring mechanisms.

[0014] Preferably, the lower end of the transmission rod is fixedly connected with the upper end of the rotating plate.

[0015] Preferably, the monitoring mechanism comprises a pressure sensor and a fixed plate, the pressure sensor is fixedly connected to the vertical surface of the rectangular groove, the fixed plate is fixedly connected between the rear portion of the bottom wall and the top wall of the rectangular groove, the inner cavity of the fixed plate is slidably connected with a contact column, the front portion of the outer surface of the contact column is fixedly connected with a supporting plate, and the rear end of the supporting plate is fixedly connected with a pressure spring together with the front end of the fixed plate.

[0016] Preferably, the supporting plate is slidably arranged in the inner cavity of the rectangular groove.

[0017] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0018] 1、 the sealing device is designed, the sealing ring can be close to the valve under the pressure of the telescopic spring when the half ball valve is closed, the device has good sealing performance, the sealing ring has telescopic performance under the action of the telescopic spring, the valve will not produce hard friction when rotating, the integrity of the device is protected, and no gap is produced.

[0019] 2、 the switch device is designed, the valve is only rotated by 90 degrees under the driving of the stepping motor, the valve body can be sealed, displacement is not excessive, and the stability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic view of the utility model;

[0021] Figure 2 It is internal structure schematic view of the utility model;

[0022] Figure 3 It is sealing device structure schematic view of the utility model;

[0023] Figure 4 It is the utility model's Figure 2 It is the enlarged schematic view of A place in the middle;

[0024] Figure 5 It is switch device structure schematic view of the utility model;

[0025] Figure 6 It is monitoring mechanism and limit ring structure schematic view of the utility model;

[0026] Figure 7 It is monitoring mechanism unfolded state schematic view of the utility model;

[0027] Figure 8 It is monitoring mechanism closed state schematic view of the utility model.

[0028] In the drawing: 1, valve body;2, connecting block;3, switch device;4, connecting pipe;5, sealing device;51, sealing ring;52, extension spring;53, extension rod;54, limit plate;31, valve;32, rotating plate;33, connecting column;34, transmission rod;35, monitoring mechanism;36, limit ring;37, stepping motor;38, rectangular plate;351, pressure sensor;352, fixed plate;353, pressure spring;354, support plate;355, contact column. DETAILED DESCRIPTION

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

[0030] As Figure 1 And Figure 2 The utility model discloses a quick closing type double eccentric half ball valve, including valve body 1, the front end and rear end of valve body 1 are all fixedly connected with connecting pipe 4, the rear end of connecting pipe 4 in the front is slidably connected with sealing device 5, and the upper part of the outer surface of valve body 1 is fixedly connected with connecting block 2, and switch device 3 is installed in the inner chamber of connecting block 2.

[0031] The connecting pipe 4 needs to be connected with the water pipe to be connected before the device is implemented, and the specific connection relationship can be selected according to requirements.

[0032] The device is powered by external power supply.

[0033] In the above, after connecting the water pipe with the device, the water source is connected, Figure 2The shown is the closed state, if you want to change it to the open state, just control the switch device 3 to rotate, the switch device 3 rotates 90 degrees and stops rotating, the connecting pipe 4 is communicated with the valve body 1, the water enters the valve body 1, and then is sequentially forwarded forward;

[0034] In the above, to close it, just control the switch device 3 to rotate, the switch device 3 rotates 90 degrees reversely, the sealing device 5 is attached to the switch device 3, the sealing is carried out, the switch device 3 is cut off the communication between the valve body 1 and the connecting block 2, and the closed state is completed.

[0035] Further, in order to realize the sealing purpose of the sealing device 5 to the switch device 3, referring to Figure 3 and Figure 4 , the sealing device 5 comprises four telescopic rods 53, four circular grooves are arranged in the annular array at the rear end of the connecting pipe 4, the four telescopic rods 53 are slidably connected in the inner cavities of the circular grooves, the four telescopic rods 53 are fixedly connected with telescopic springs 52 at the front ends, the four telescopic rods 53 are fixedly connected with a sealing ring 51 at the rear ends, and the rear portions of the four circular groove inner cavities are fixedly connected with limit plates 54;

[0036] The outer surfaces of the four telescopic rods 53 are slidably located in the inner cavities of the limit plates 54 on the same side.

[0037] In the above, when the switch device 3 is controlled to rotate and close, the switch device 3 contacts the sealing ring 51, the sealing ring 51 moves forward, when the sealing ring 51 moves forward, the telescopic rod 53 connected with the sealing ring 51 moves forward in the circular groove, when the telescopic rod 53 moves forward, the telescopic spring 52 is pressed to generate pressure, when the switch device 3 is rotated, the telescopic spring 52 releases the pressure and pushes the telescopic rod 53 to move backward, the telescopic rod 53 drives the sealing ring 51 to move forward, the sealing ring 51 is attached to the switch device 3, and the sealing effect is achieved.

[0038] In the above, the limit plate 54 can limit the displacement distance of the telescopic rod 53, prevent the telescopic rod 53 from being disengaged from the circular groove due to excessive displacement.

[0039] In the above, the telescopic rod 53 is made of stainless steel.

[0040] In the above, the sealing ring 51 is made of silica gel, so that the sealing property is better when the sealing ring 51 is attached to the switch device 3.

[0041] Further, in order to realize the purpose of the switch device 3 to close and open the valve body 1 and the connecting pipe 4, and to connect and rotate 90 degrees and stop rotating, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8The switch device 3 comprises a connecting column 33, the connecting column 33 is rotationally connected in the inner cavity of the connecting block 2, the lower end of the connecting column 33 is rotationally connected with a rotating plate 32, the front end of the rotating plate 32 is fixedly connected with a valve 31, the upper end of a transmission rod 34 is fixedly connected with a stepping motor 37, the inner cavity of the connecting column 33 is fixedly connected with a limiting ring 36, the inner surface of the limiting ring 36 is rotationally connected with the transmission rod 34, the outer surface of the transmission rod 34 is fixedly connected with a rectangular plate 38 on the upper front side, and the vertical surface of the limiting ring 36 is provided with a rectangular groove, and the inner cavities of the two rectangular grooves are fixedly connected with a monitoring mechanism 35;

[0042] The lower end of the transmission rod 34 is fixedly connected with the upper end of the rotating plate 32;

[0043] The monitoring mechanism 35 comprises a pressure sensor 351 and a fixed plate 352, the pressure sensor 351 is fixedly connected to the vertical surface of the rectangular groove, the fixed plate 352 is fixedly connected between the rear part of the bottom wall and the top wall of the rectangular groove, the inner cavity of the fixed plate 352 is slidingly connected with a contact column 355, the outer surface of the contact column 355 is fixedly connected with a support plate 354 on the front part, and the rear end of the support plate 354 is fixedly connected with a pressure spring 353 together with the front end of the fixed plate 352;

[0044] The support plate 354 slides in the inner cavity of the rectangular groove.

[0045] In the above, when the valve body 1 and the connecting pipe 4 are connected, the stepping motor 37 is controlled to rotate, when the stepping motor 37 rotates, the transmission rod 34 is driven to rotate in the inner cavity of the limiting ring 36 through the shaft coupling, when the transmission rod 34 rotates, the rotating plate 32 connected with the lower end of the transmission rod 34 is driven to rotate, the rotating plate 32 drives the valve 31 connected therewith to rotate, so that the valve 31 rotates in the valve body 1 and abuts against the sealing ring 51, so that the valve 31 cuts off the connection between the valve body 1 and the connecting pipe 4, when the transmission rod 34 rotates, the rectangular plate 38 connected with the transmission rod 34 is driven to rotate, when the rectangular plate 38 rotates by 90 degrees, the monitoring mechanism 35 installed in the limiting ring 36 is contacted, after the monitoring mechanism 35 is contacted, information is transmitted to the stepping motor 37, so that the stepping motor 37 stops rotating, the stepping motor 37 drives the transmission rod 34 to rotate by 90 degrees and then stops rotating, at this time, the valve 31 can cut off the connection between the valve body 1 and the connecting pipe 4;

[0046] In the above, when the rectangular plate 38 rotates, the contact column 355 is contacted at first, so that the contact column 355 slides to the inside of the rectangular groove, when the rectangular plate 38 rotates by 90 degrees, the contact column 355 is pushed to contact the pressure sensor 351, and the pressure sensor 351 transmits information to the stepping motor 37, so that the stepping motor 37 stops rotating;

[0047] Similarly, when the contact column 355 slides into the rectangular slot, the support plate 354 connected to the surface of the contact column 355 slides into the rectangular slot, and under the cooperation of the fixed plate 352, the pressure spring 353 generates pressure. When the rectangular plate 38 rotates in the opposite direction, the pressure spring 353 releases the pressure and pushes the support plate 354 to move away from the rectangular slot.

[0048] In the above, when the control step motor 37 drives the valve 31 to rotate in the opposite direction to open the connection between the valve body 1 and the connecting pipe 4, the rectangular plate 38 contacts the monitoring mechanism 35 on the other side, and the transmission rod 34 rotates 90 degrees and stops rotating.

[0049] In the above, the pressure sensor 351 is a device or apparatus that can sense pressure signals and can convert the pressure signals into usable output electrical signals according to certain rules. The model is: U5600 wireless high-precision pressure sensor.

[0050] It should be particularly noted that the specific installation method and circuit connection method and control method of the step motor 37 and the pressure sensor 351 used in the present application are all conventional designs, and the present application will not be described in detail.

[0051] The basic principles and main features of the present application and the 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 examples, and the above examples 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 claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A quick-closing double eccentric hemispherical valve, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to both the front and rear ends of a connecting pipe (4). The rear end of the connecting pipe (4) located at the front end is slidably connected to a sealing device (5). A connecting block (2) is fixedly connected to the upper part of the outer surface of the valve body (1). A switching device (3) is installed in the inner cavity of the connecting block (2). The sealing device (5) includes four telescopic rods (53). The rear end of the connecting pipe (4) is provided with four circular slots in an annular array. The four telescopic rods (53) are slidably connected to the inner cavity of the circular slots. The front end of each of the four telescopic rods (53) is fixedly connected with a telescopic spring (52). The rear end of each of the four telescopic rods (53) is fixedly connected with a sealing ring (51). The rear part of the inner cavity of each of the four circular slots is fixedly connected with a limiting plate (54). The outer surfaces of the four telescopic rods (53) slide on the inner cavity of the limiting plate (54) located on the same side; The switching device (3) includes a connecting column (33), which is rotatably connected to the inner cavity of the connecting block (2). A rotating plate (32) is rotatably connected to the lower end of the connecting column (33). A valve (31) is fixedly connected to the front end of the rotating plate (32). A limit ring (36) is fixedly connected to the upper part of the inner cavity of the connecting column (33). A transmission rod (34) is rotatably connected to the inner surface of the limit ring (36). A stepper motor (37) is fixedly connected to the upper end of the transmission rod (34). A rectangular plate (38) is fixedly connected to the upper front side of the outer surface of the transmission rod (34). A rectangular groove is opened on the vertical surface of the limit ring (36). A monitoring mechanism (35) is fixedly connected to the inner cavity of both rectangular grooves.

2. The quick-closing double eccentric hemispherical valve according to claim 1, characterized in that: The lower end of the transmission rod (34) is fixedly connected to the upper end of the rotating plate (32).

3. The quick-closing double eccentric hemispherical valve according to claim 1, characterized in that: The monitoring mechanism (35) includes a pressure sensor (351) and a fixing plate (352). The pressure sensor (351) is fixedly connected to the vertical surface of the rectangular groove. The fixing plate (352) is fixedly connected to the rear part between the bottom wall and the top wall of the rectangular groove. A contact post (355) is slidably connected to the inner cavity of the fixing plate (352). A support plate (354) is fixedly connected to the front part of the outer surface of the contact post (355). A pressure spring (353) is fixedly connected to the rear end of the support plate (354) and the front end of the fixing plate (352).

4. The quick-closing double eccentric hemispherical valve according to claim 3, characterized in that: The support plate (354) slides within the rectangular groove cavity.

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