Small gate valve

Abstract

A small gate valve belongs to the technical field of pipeline valves. The valve is characterized by comprising a valve body, a valve plate, a sealing assembly and a driving assembly, the valve body is provided with a space for the valve plate to pass through, the valve plate is provided with a communicating part and a closing part, the valve plate and the valve body can slide relatively, so that the communicating part or the closing part is alternately aligned with a flow channel of the valve body, and the sealing assembly is arranged on the valve body in a sliding mode. The driving assembly is connected with the sealing assembly and enables the sealing assembly to press or loosen the valve plate. According to the small gate valve, the driving assembly and the sealing assembly are arranged on the valve body, the sealing assembly reciprocates on the valve body through the driving assembly, when the valve plate is replaced, the driving assembly drives the sealing assembly to slide on the valve body, the sealing assembly presses or loosens the valve plate, the valve plate is convenient to replace, abrasion between the valve body and the valve plate is reduced, and the service life of the valve plate is prolonged. The service life of the valve body is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a small plug-in valve belongs to plug-in valve technical field. BACKGROUND

[0002] Plug-in valve is a kind of control equipment, mainly applied to chemical industry, building materials and other industries, the role is through the opening and closing of control equipment to regulate the flow of medium, the simple structure of plug-in valve is compact, and it has the characteristics such as good sealing and wear resistance, plays an important role in various industries, from industrial production to environmental protection, from energy management to food safety, plug-in valve is an indispensable control element.

[0003] In order to ensure that the sealing between valve body and valve plate is reliable, a certain compression force needs to be maintained between valve body and valve plate, and when the valve body is opened and closed, wear will occur between valve body and plug-in plate, which will affect the sealing performance. In the prior art, wear-resistant structure is provided for the sealing part of the opening and closing part and the valve seat of the valve. This improved structure is usually "a temporary solution", and after long-term work of the valve, wear will still occur between the valve body and the valve plate to some extent, reducing the service life of the valve and the sealing parts. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a plug-in valve capable of reducing wear between valve plate and valve body.

[0005] The utility model adopts the technical scheme that the small plug-in valve includes valve body, valve plate, sealing assembly and driving assembly, the valve body is provided with space for the valve plate to pass through, the valve plate is provided with conducting part and closed part, the valve plate and the valve body can slide relative to each other, so that the conducting part or the closed part is alternately aligned with the flow channel of the valve body, the sealing assembly is slidably arranged on the valve body, the driving assembly is connected with the sealing assembly, and the sealing assembly is pressed or released from the valve plate.

[0006] Preferably, the driving assembly includes a worm gear, a worm and a bottom ring, the bottom ring is rotatably arranged on the valve body, the worm gear is fixedly arranged on the bottom ring, the worm is arranged on one side of the valve body, and the worm drives the worm gear to rotate.

[0007] Preferably, the driving assembly further includes a moving ring, the moving ring is arranged on the bottom ring and is arranged on the side close to the valve plate.

[0008] Preferably, the sealing assembly includes a compression ring, a connecting ring and a fastener, the connecting ring is threadedly connected to the driving assembly, one end of the fastener is arranged on the compression ring, and the other end of the fastener is fixedly arranged on the connecting ring, and the compression ring is driven to reciprocate by the driving assembly.

[0009] Preferably, the compression ring is in the shape of an I-beam, and one end of the fastener extends into the groove of the compression ring.

[0010] Preferably, the sealing assembly further comprises a retaining ring, which is arranged between the compression ring and the connecting ring and gradually inclines from the side close to the compression ring to the side of the connecting ring.

[0011] Preferably, the valve body further comprises a limiting block, which is arranged between the worm gear and the valve body, one end of the limiting block is arranged on one side of the worm gear, and the other end is arranged on the valve body, so that the limiting block can limit the worm gear.

[0012] Preferably, the valve plate further comprises casters and a limiting ring, the limiting ring is arranged on one side of the valve plate and is arranged on the valve body through a connecting rod, the casters are arranged on the other side of the valve body, and the limiting ring and the casters form a compression force on the valve plate.

[0013] Preferably, the casters and the limiting ring are two in number and are arranged side by side along the direction in which the valve plate travels.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model discloses a small plug valve, which is provided with a driving assembly and a sealing assembly on the valve body, the sealing assembly is reciprocated on the valve body through the driving assembly, when the valve plate is replaced, the sealing assembly is slid on the valve body through the driving assembly, the sealing assembly compresses or loosens the valve plate, the valve plate is convenient to replace, the abrasion between the valve body and the valve plate is reduced, and the service life of the valve body is increased. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 It is the sectional view of the front view of the utility model;

[0019] Figure 4 It is the local enlarged view of A place;

[0020] Figure 5 It is the local enlarged view of B place;

[0021] Figure 6 It is the local enlarged sectional view of C place.

[0022] In the figure: 1, valve body; 2, push rod mechanism; 3, valve plate; 4, fastener; 5, worm wheel; 6, drive assembly; 7, compression ring; 8, limit block; 9, caster; 10, bottom ring; 11, connecting ring; 12, check ring; 13, limit ring; 14, moving ring. DETAILED DESCRIPTION

[0023] The utility model will be further explained below in combination with specific embodiments, however, people skilled in the art should understand that the detailed description given in combination with the drawings is for better explanation, the structure of the utility model must exceed these limited embodiments, and for some equivalent replacement schemes or common means, the detailed description will not be described in the text, but still belongs to the protection scope of the application.

[0024] Figures 1-6 It is the best embodiment of the utility model, the following will be combined with the drawings Figure 1 The utility model is further explained. Figure 6 The utility model is further explained.

[0025] Small plug-in valve, including valve 1, valve plate 3, sealing assembly and drive assembly 6, be provided with the space of valve plate 3 through valve body 1, be provided with the open section and closed section on valve plate 3, valve plate 3 and valve body 1 can be relatively slid, make open section or closed section alternately with the flow passage of valve body 1 is in line with, sealing assembly is slidably arranged on valve body 1, drive assembly 6 is connected with sealing assembly, and sealing assembly is compressed or loosened valve plate 3. Small plug-in valve of the utility model, drive assembly and sealing assembly are provided on valve body, sealing assembly is reciprocated on valve body through drive assembly, when replacing valve plate, sealing assembly is slid on valve body by drive assembly, sealing assembly is compressed or loosened valve plate, it is convenient to replace valve plate, reduce the abrasion between valve body and valve plate, increase the service life of valve body.

[0026] Drive assembly 6 includes worm wheel 5, worm and bottom ring 10, bottom ring 10 is rotatably arranged on valve body 1, worm wheel 5 is fixedly arranged on bottom ring 10, worm is arranged on one side of valve body 1, and worm drives worm wheel 5 to rotate. Drive assembly 6 further includes moving ring 13, moving ring 13 is arranged on bottom ring 10, and moving ring 13 is arranged on one side close to valve plate 3.

[0027] Sealing assembly includes compression ring 7, connecting ring 11 and fastener 4, connecting ring 11 is arranged on drive assembly 6 by threaded connection, one end of fastener 4 is arranged on compression ring 7, and the other end is fixedly arranged on connecting ring 11, and compression ring 7 is reciprocated by drive assembly 6, and compression ring 7 is in the shape of I, and one end of fastener 4 extends into the recess of compression ring 7;Connecting ring 11 and moving ring 14 are connected by screw threads, drive assembly 6 rotates, moving ring 14 and connecting ring 11 relatively rotate, and connecting ring 14 drives compression ring to rotate forward or backward.

[0028] The sealing assembly further comprises a stop ring 12, which is arranged between the compression ring 7 and the connecting ring 11, and is inclined from the side close to the compression ring 7 to the side of the connecting ring 11 from bottom to top, and the stop ring 12 blocks the moving ring and prevents the compression ring 7 from excessively compressing the valve plate 3.

[0029] The small plug valve further comprises a limiting block 8, which is arranged between the worm gear 5 and the valve body 1, one end of the limiting block 8 is arranged on one side of the worm gear 5, and the other end is arranged on the valve body 1, and the limiting block 8 can limit the fixing of the worm gear 5.

[0030] The valve plate 3 further comprises a trundle 9 and a limiting ring 14, the limiting ring 14 is arranged on one side of the valve plate 3, the limiting ring 14 is arranged on the valve body 1 through a connecting rod, the trundle 9 is arranged on the other side of the valve body 1, the limiting ring 14 and the trundle 9 form a compression force on the valve plate 3, the trundle 9 and the limiting ring 14 are two in parallel along the direction of the valve plate 3, and the trundle 9 and the limiting ring 14 are symmetrically arranged on both sides of the valve body 1.

[0031] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to obtain equivalent embodiments. However, any simple modification, equivalent change and modification of the above embodiments without departing from the technical scheme of the present application, and according to the technical essence of the present application, still belong to the protection scope of the present application.

Claims

1. A compact plug valve characterized by: It includes valve body (1), valve plate (3), sealing assembly and drive assembly (6), the space through which valve plate (3) is arranged on valve body (1), valve plate (3) is provided with open section and closed section, valve plate (3) and valve body (1) can be relatively slid, make open section or closed section alternately with the flow channel of valve body (1) alignment, sealing assembly is slidably arranged on valve body (1), drive assembly is connected with sealing assembly, and sealing assembly is compressed or loosened valve plate (3).

2. A compact plug valve according to claim 1, characterized in that: The drive assembly includes worm wheel (5), worm and bottom ring (10), the bottom ring (10) is rotatably arranged on the valve body (1), the worm wheel (5) is fixedly arranged on the bottom ring (10), the worm is arranged on one side of the valve body (1), and the worm drives the rotation of the worm wheel (5).

3. A compact insertion valve according to claim 1, characterized in that: The drive assembly further includes a moving ring (14), the moving ring (14) is arranged on the bottom ring (10), and the moving ring (14) is arranged on the side close to the valve plate (3).

4. A compact insertion valve according to claim 1, characterized in that: The sealing assembly includes a compression ring (7), a connecting ring (11) and a fastener (4), the connecting ring (11) is arranged on the drive assembly (6) by threaded connection, one end of the fastener (4) is arranged on the compression ring (7), the other end is fixedly arranged on the connecting ring (11), and the compression ring (7) is driven to reciprocate by the drive assembly (6).

5. A compact insertion valve according to claim 4, characterized in that: The compression ring (7) is in the shape of an I-beam, and one end of the fastener (4) extends into the groove of the compression ring (7).

6. A compact insertion valve according to claim 4, characterized in that: The sealing assembly further includes a check ring (12), the check ring (12) is arranged between the compression ring (7) and the connecting ring (11), and the check ring (12) gradually inclines from the side close to the compression ring (7) to the side of the connecting ring (11) from bottom to top.

7. A compact insertion valve according to claim 1, characterized in that: It also includes a limiting block (8), the limiting block (8) is arranged between the worm wheel (5) and the valve body (1), one end of the limiting block (8) is arranged on one side of the worm wheel (5), the other end is arranged on the valve body (1), and the limiting block (8) can limit the fixing of the worm wheel (5).

8. A compact insertion valve according to claim 1, characterized in that: The valve plate (3) further includes a caster (9) and a limiting ring (13), the limiting ring (13) is arranged on one side of the valve plate (3), the limiting ring (13) is arranged on the valve body (1) through a connecting rod, the caster (9) is arranged on the other side of the valve body, and the limiting ring (13) and the caster (9) form the compression force of the valve plate (3).

9. A compact insertion valve according to claim 8, characterized in that: The caster (9) and the limiting ring (13) have two in parallel along the direction of the valve plate (3), and the caster (9) and the limiting ring (13) have two symmetrically arranged on both sides of the valve body (1).

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