Manual valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a manual valve which comprises a three-way valve body. The three-way valve body is provided with a first cavity, a second cavity and a third cavity. The sealing seat is arranged in the second cavity and is provided with a through hole; the control mechanism comprises a lead screw, a hand wheel, an output assembly and a sealing assembly, the lead screw is located in the first cavity, the hand wheel is connected with the lead screw, the output assembly is in transmission connection with the lead screw, the sealing assembly is connected with the output assembly, and part of the sealing assembly is located on one side of the third cavity and corresponds to the sealing seat. According to the manual valve, the opening and closing state of the valve can be easily adjusted through the control mechanism, and use convenience is improved; in addition, the output assembly is connected with the sealing assembly, the stability and reliability of the valve under the high-pressure or high-flow-speed condition are enhanced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valves, in particular to a manual valve. BACKGROUND

[0002] The manual valve is a control component in a pipeline fluid conveying system, and is used to change the shutoff, connection, distribution and medium flow direction, and has the functions of flow guiding, shutoff and throttling. In the related technology, the sealing effect of the manual valve is poor, and it is difficult to achieve good sealing effect, and the range of the applicable valve diameter is limited.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those skilled in the art. SUMMARY

[0004] In view of at least one of the above technical problems, the present application provides a manual valve, which solves the problems of poor sealing effect of the manual valve, difficulty in achieving good sealing effect, and limited range of applicable valve diameter.

[0005] The present application provides a manual valve, comprising:

[0006] The three-way valve body has a first cavity, a second cavity and a third cavity;

[0007] The sealing seat is provided in the second cavity and has a through hole;

[0008] The control mechanism comprises a lead screw, a hand wheel, an output assembly and a sealing assembly. The lead screw is located in the first cavity. The hand wheel is connected with the lead screw. The output assembly is in transmission connection with the lead screw. The sealing assembly is connected with the output assembly. Part of the sealing assembly is located on one side of the third cavity and corresponds to the sealing seat.

[0009] One of the above technical solutions has at least one of the following advantages or beneficial effects: the manual valve can easily adjust the opening and closing state of the valve through the control mechanism, improving the convenience of use. In addition, the output assembly and the sealing assembly are connected, which enhances the stability and reliability of the valve under high pressure or high flow rate conditions, and prolongs the service life.

[0010] In some possible implementation manners, the control mechanism further comprises a mounting assembly, the mounting assembly is provided in the first cavity, the lead screw, the hand wheel and the output assembly are all located in the mounting assembly, and the sealing assembly is located on one side of the mounting assembly.

[0011] In some possible implementation manners, the mounting assembly comprises a fixed plate, a pipe body and a pipe cap. The fixed plate and the pipe body are provided in the first cavity. The pipe body abuts against the fixed plate. The pipe cap is provided on the pipe body. The lead screw is provided in the fixed plate.

[0012] In some possible implementation manners, the control mechanism further comprises a support assembly, the support assembly being located in the first cavity, and the lead screw being arranged on the support assembly.

[0013] In some possible implementation manners, the support assembly comprises a support column and a bearing with seat, the support column being located in the first cavity, the bearing with seat being connected with the support column, and the lead screw being arranged on the bearing with seat.

[0014] In some possible implementation manners, the output assembly comprises a trapezoidal nut, a guide seat and a fixing ring, the trapezoidal nut being in transmission connection with the lead screw, the guide seat being connected with the trapezoidal nut, the fixing ring being connected with the guide seat, and the closing assembly being connected with the fixing ring.

[0015] In some possible implementation manners, the closing assembly comprises a push rod and a valve core seat, the push rod being connected with the output assembly, an end of the push rod being located on one side of the third cavity, and the valve core seat being connected with the end of the push rod.

[0016] The application will be further described below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0018] Figure 1 is an internal structure diagram of the manual valve shown in the embodiments of the present application;

[0019] Figure 2 is Figure 1 a mechanism diagram of the control mechanism in the embodiments of the present application;

[0020] In the drawings: 100, three-way valve body; 110, first cavity; 120, second cavity; 130, third cavity;

[0021] 200, sealing seat; 210, through hole;

[0022] 300, control mechanism; 310, lead screw; 320, hand wheel; 330, output assembly; 340, closing assembly; 350, mounting assembly;

[0023] 360, support assembly;

[0024] 331, trapezoidal nut; 332, guide seat; 333, fixing ring;

[0025] 341, push rod; 342, valve core seat; 351, fixed plate; 352, tube body; 353, tube cap; 361, support column; 362, bearing with seat; DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0027] As shown in Figure 1 and Figure 2 shown, Figure 1 is an internal structure diagram of the manual valve shown in the embodiments of the present application; Figure 2 is Figure 1 a mechanism diagram of the control mechanism; the present embodiment provides a manual valve, which comprises a three-way valve body 100, a sealing seat 200 and a control mechanism 300.

[0028] The three-way valve body 100 has a first cavity 110, a second cavity 120 and a third cavity 130; the sealing seat 200 is arranged in the second cavity 120, and the sealing seat 200 has a through hole 210; the control mechanism 300 comprises a lead screw 310, a hand wheel 320, an output assembly 330 and a sealing assembly 340, the lead screw 310 is located in the first cavity 110, the hand wheel 320 is connected with the lead screw 310, the output assembly 330 is in transmission connection with the lead screw 310, the sealing assembly 340 is connected with the output assembly 330, part of the sealing assembly 340 is located on one side of the third cavity 130 and is arranged corresponding to the sealing seat 200.

[0029] The sealing seat 200 is arranged in the second cavity 120. In some embodiments, the sealing seat 200 is inserted into the second cavity 120, and the outer surface of the sealing seat 200 is fitted with the inner wall of the second cavity 120, in addition, the sealing seat 200 is in abutment with the protruding block of the second cavity 120.

[0030] In some embodiments, the outer surface of the sealing seat 200 is provided with two sealing rings.

[0031] The hand wheel 320 is connected with the lead screw 310. In some embodiments, the hand wheel 320 and the lead screw 310 can be connected in various ways. For example, at least one of fixed connection, detachable connection and the like. The fixed connection can include at least one of bonding, welding, integral molding and the like. The detachable connection can include at least one of clamping, buckling, threaded connection and the like.

[0032] The manual valve in the embodiment can easily adjust the opening and closing state of the valve through the control mechanism 300, improve the convenience of use; in addition, through the connection of the output assembly 330 and the sealing assembly 340, the stability and reliability of the valve under high pressure or high flow rate conditions are enhanced, and the service life is prolonged.

[0033] In some embodiments, as shown in Figure 1 and Figure 2 The control mechanism 300 further includes a mounting assembly 350, which is arranged in the first cavity 110, the lead screw 310, the hand wheel 320 and the output assembly 330 are located in the mounting assembly 350, and the sealing assembly 340 is located on one side of the mounting assembly 350.

[0034] The mounting assembly 350 is used to provide mounting space for the lead screw 310 and the hand wheel 320. In some embodiments, the mounting assembly 350 is inserted into the first cavity 110, and the shape of the mounting assembly 350 is matched with the shape of the first cavity 110.

[0035] In some embodiments, as shown in Figure 1 and Figure 2 The mounting assembly 350 includes a fixed plate 351, a tube body 352 and a tube cap 353, the fixed plate 351 and the tube body 352 are arranged in the first cavity 110, the tube body 352 abuts against the fixed plate 351, the tube cap 353 is arranged on the tube body 352, and the lead screw 310 is arranged in the fixed plate 351.

[0036] The fixed plate 351 is arranged in the first cavity 110. In some embodiments, the fixed plate 351 is inserted into the first cavity 110, and the outer surface of the fixed plate 351 is matched with the inner wall of the first cavity 110, in addition, the fixed plate 351 abuts against the protruding block of the first cavity 110.

[0037] In some embodiments, the outer surface of the fixed plate 351 has a sealing ring.

[0038] In some embodiments, a surface of the fixed plate 351 towards the sealing seat 200 is provided with an oil seal, and the lead screw 310 is arranged in the oil seal.

[0039] The tube body 352 is arranged in the first cavity 110. In some embodiments, the tube body 352 is inserted into the first cavity 110, and is matched with the inner wall of the first cavity 110. One end of the tube body 352 abuts against the fixed plate 351.

[0040] The tube cap 353 is arranged on the tube body 352. In some embodiments, the tube cap 353 is detachably connected with the end of the tube body 352 away from the fixed plate 351. In actual use, the tube cap 353 can be removed, and then the hand wheel 320 is rotated to drive the lead screw 310, and control the sealing assembly 340 to move away from or close to the sealing seat 200.

[0041] In some embodiments, as shown in Figure 1 and Figure 2 The control mechanism 300 further comprises a support assembly 360, which is located in the first cavity 110, and the lead screw 310 is arranged on the support assembly 360.

[0042] In some embodiments, the support assembly 360 is connected with the mounting assembly 350 for supporting the lead screw 310.

[0043] In some embodiments, as shown in Figure 1 and Figure 2 The support assembly 360 comprises a support column 361 and a seat bearing 362, the support column 361 is located in the first cavity 110, and the seat bearing 362 is connected with the support column 361, and the lead screw 310 is arranged on the seat bearing 362.

[0044] The support column 361 is a part for connecting the fixed plate 351 and the seat bearing 362. In some embodiments, the number of the support column 361 is two, and they are symmetrically arranged, so that the two support columns 361 can stably support the seat bearing 362, and after installation, the seat bearing 362 can be parallel to the fixed plate 351 and keep the seat bearing 362 stable. In some embodiments, the support column 361 is screwed with the fixed plate 351.

[0045] The seat bearing 362 is a part that can allow the lead screw 310 to rotate relatively. In some embodiments, the opposite ends of the seat bearing 362 are screwed with the support column 361 respectively. In this way, the middle part of the seat bearing 362 is aligned with the middle part of the fixed plate 351, that is, the central axis of the seat bearing 362 overlaps with the central axis of the fixed plate 351, so that the lead screw 310 is vertically arranged on the fixed plate 351, and it is ensured that the lead screw 310 can rotate smoothly.

[0046] In some embodiments, as shown in Figure 1 and Figure 2 The output assembly 330 comprises a trapezoidal nut 331, a guide seat 332 and a fixed ring 333, the trapezoidal nut 331 is in driving connection with the lead screw 310, the guide seat 332 is connected with the trapezoidal nut 331, the fixed ring 333 is connected with the guide seat 332, and the sealing assembly 340 is connected with the fixed ring 333.

[0047] The trapezoidal nut 331 is a part for driving cooperation with the lead screw 310. In some embodiments, the internal thread of the trapezoidal nut 331 is in driving connection with the external thread of the lead screw 310. When the lead screw 310 rotates, the trapezoidal nut 331 can move relatively along the length direction of the lead screw 310.

[0048] The guide seat 332 is a component used to ensure that the closure assembly 340 does not deviate during forward movement. In some embodiments, the opposite ends of the guide seat 332 are sleeved on the support column 361, thereby restricting the forward direction of the guide seat 332 and preventing it from shifting in a direction perpendicular to the support column 361, thus ensuring the stable forward movement of the closure assembly 340. In some embodiments, the guide seat 332 also serves to connect the trapezoidal nut 331 and the retaining ring 333. For example, the guide seat 332 is located between the trapezoidal nut 331 and the retaining ring 333, and the three are connected by screws.

[0049] The retaining ring 333 is a part used to secure the closure assembly 340. In some embodiments, the retaining ring 333 is screwed onto the guide seat 332. A portion of the retaining ring 333 is fitted onto the trapezoidal nut 331, and another portion of the retaining ring 333 extends out of the trapezoidal nut 331.

[0050] In some embodiments, the closure component 340 is inserted into another portion of the retaining ring 333 and abuts against the trapezoidal nut 331.

[0051] In some embodiments, such as Figure 1 and Figure 2 As shown, the sealing assembly 340 includes a push rod 341 and a valve core seat 342. The push rod 341 is connected to the output assembly 330, and the end of the push rod 341 is located on one side of the third cavity 130. The valve core seat 342 is connected to the end of the push rod 341.

[0052] The push rod 341 is a component that connects the retaining ring 333 and the valve core seat 342. In some embodiments, the push rod 341 is screwed to the output assembly 330. For example, a screw passes radially through the output assembly 330 along the push rod 341 and abuts against the push rod 341, thereby fixing the push rod 341 to the output assembly 330. Exemplarily, the push rod 341 is fixed to the retaining ring 333 by a screw.

[0053] In some embodiments, the push rod 341 is sleeved on the lead screw 310 and has a clearance fit with the lead screw 310. Thus, the output assembly 330 can drive the push rod 341 to move synchronously. Furthermore, the movement of the push rod 341 does not affect the rotation of the lead screw 310, thereby simplifying the valve structure.

[0054] The valve seat 342 is a part used to close the through hole 210. In some embodiments, the valve seat 342 is screwed to the push rod 341.

[0055] In some embodiments, the valve core seat 342 is provided with a water seal at one end facing the through hole 210 to enhance sealing performance.

[0056] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0057] In the description of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or simply indicate that the first feature is higher in horizontal height than the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or simply indicate that the first feature is lower in horizontal height than the second feature.

[0058] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a mediating element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a mediating element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0059] In the description of the present application, it needs to be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0060] In the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Any person skilled in the art, without departing from the technical scheme of the present application, can make many possible changes and modifications to the technical scheme of the present application, or modify equivalent embodiments with equivalent changes. Therefore, any equivalent changes made according to the shape, structure and principle of the present application, without departing from the technical scheme of the present application, shall be covered within the protection scope of the present application.

Claims

1. A manual valve, characterized by The utility model relates to a three-way valve, which comprises: a three-way valve body having a first cavity, a second cavity and a third cavity; a sealing seat provided in the second cavity, the sealing seat having a through hole; a control mechanism comprising a lead screw, a hand wheel, an output assembly and a closed assembly, the lead screw being located in the first cavity, the hand wheel being connected with the lead screw, the output assembly being in transmission connection with the lead screw, the closed assembly being connected with the output assembly, part of the closed assembly being located on one side of the third cavity and corresponding to the sealing seat.

2. The manual valve of claim 1, wherein, The control mechanism further comprises a mounting assembly provided in the first cavity, the lead screw, the hand wheel and the output assembly being located in the mounting assembly, and the closed assembly being located on one side of the mounting assembly.

3. The manual valve of claim 2, wherein, The mounting assembly comprises a fixed plate and a tube body, both of which are provided in the first cavity, the tube body being in abutment with the fixed plate, and a tube cap being provided on the tube body, the lead screw being provided in the fixed plate.

4. The manual valve of claim 1, wherein, The control mechanism further comprises a support assembly located in the first cavity, the lead screw being provided on the support assembly.

5. The manual valve of claim 4, wherein, The support assembly comprises a support column and a bearing with seat, the support column being located in the first cavity, the bearing with seat being connected with the support column, and the lead screw being provided on the bearing with seat.

6. The manual valve of claim 5, wherein, The output assembly comprises a trapezoidal nut, a guide seat and a fixed ring, the trapezoidal nut being in transmission connection with the lead screw, the guide seat being connected with the trapezoidal nut, the fixed ring being connected with the guide seat, and the closed assembly being connected with the fixed ring.

7. The manual valve of claim 1, wherein The closed assembly comprises a push rod and a valve core seat, the push rod being connected with the output assembly, an end of the push rod being located on one side of the third cavity, and the valve core seat being connected with the end of the push rod.

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