Novel ceramic plug valve

Abstract

The utility model discloses a novel ceramic plug valve which comprises an upper closing pipe and a lower closing pipe, an upper fixing plate is fixedly connected outside the upper closing pipe, a lower fixing plate is fixedly connected outside the lower closing pipe, a movable plate is sleeved outside the lower closing pipe, the movable plate is connected with the lower closing pipe in a sliding mode, and an inserting plate is fixedly connected to the top of the movable plate. A through groove is formed in the lower fixing plate. According to the novel ceramic plug valve, when an upper closing pipe and a lower closing pipe are spliced together, an inserting plate on the lower closing pipe penetrates through an inserting groove in the upper closing pipe, then a bidirectional lead screw is rotated till a clamping groove in the inserting plate is clamped with an upper fixing plate, and due to the fact that the clamping groove is of a right-trapezoid structure, the inner side of the clamping groove is provided with an inclined face; the inclined plane can directly abut against the upper fixing plate, the upper fixing plate can be extruded through the inclined plane, the upper fixing plate and the lower fixing plate can be attached more firmly, finally splicing of the upper closing pipe and the lower closing pipe is achieved, and operation is more convenient and saves more labor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plug valve, more particularly to a new type of ceramic plug valve. BACKGROUND

[0002] The plug valve is a rotating valve with a plug as a closure member. The plug is rotated 90 degrees to open or close the valve. It is a valve with a hole in the plug as a closure member. The plug rotates with the valve stem to open and close. The plug of the plug valve is usually a cone that cooperates with the conical hole surface of the valve body to form a sealing pair. The plug valve is the earliest valve used, with simple structure, quick opening and closing, and small fluid resistance.

[0003] Chinese patent discloses patent number CN202321868476.8, a kind of lining ceramic plug valve, the utility model discloses the design of the separate type of upper joint pipe and lower joint pipe, and utilizes upper fixed plate and lower fixed plate to be fixed, and sets up connecting pipe slider and connecting groove to splice to avoid the problem that incorrect splicing appears gap, realize the function of the plug valve for easy disassembly, facilitate the installation and maintenance of plug valve, but still there are certain problems, the ceramic plug valve is spliced by upper joint pipe and lower joint pipe, upper fixed plate and lower fixed plate are connected between upper joint pipe and lower joint pipe, and upper fixed plate and lower fixed plate are fixed between the upper fixed plate and lower fixed plate by connecting nut and connecting screw, and connecting screw and connecting nut have eight groups in total, which means that when splicing upper joint pipe and lower joint pipe, it needs to be operated eight times repeatedly, reduces the convenience of use, therefore, we provide new type ceramic plug valve. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing new type ceramic plug valve to solve the problems in the above background art:

[0005] Some existing ceramic plug valves are spliced by upper joint pipe and lower joint pipe, upper fixed plate and lower fixed plate are connected between upper joint pipe and lower joint pipe, and upper fixed plate and lower fixed plate are fixed between the upper fixed plate and lower fixed plate by connecting nut and connecting screw, and connecting screw and connecting nut have eight groups in total, which means that when splicing upper joint pipe and lower joint pipe, it needs to be operated eight times repeatedly, reduces the convenience of use.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a new ceramic plug valve, including upper joint pipe and lower joint pipe, the outside fixed connection of upper joint pipe has upper fixed plate, the outside fixed connection of lower joint pipe has lower fixed plate, the outside of lower joint pipe is equipped with movable plate, movable plate and lower joint pipe slidingly connected, the top fixed connection of movable plate has the plug, the inside of lower fixed plate is equipped with through groove, the plug passes through through groove and extends to the top of lower fixed plate, the plug and through groove slidingly connected, the inside of upper fixed plate is equipped with the insertion slot, the insertion slot uses with plug, one side of plug is equipped with the clamping slot, the clamping slot uses with upper fixed plate.

[0008] Preferably, the clamping slot is a right trapezoidal structure.

[0009] Preferably, the movable plate is two, the two movable plates are symmetrically distributed, and a bidirectional screw rod is arranged between the two movable plates.

[0010] Preferably, the bidirectional screw rod is externally projected with a nut, and the nut is fixedly connected with the bidirectional screw rod.

[0011] Preferably, the inside of the plug is slidingly connected with a limiting rod, the limiting rod is fixedly connected with the lower fixed plate, and a spring is sleeved outside the limiting rod and between the plug and the through groove.

[0012] Preferably, the outside of the plug away from the movable plate is provided with a chamfer.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] When the upper joint pipe and the lower joint pipe are spliced together, the plug on the lower joint pipe passes through the insertion slot on the upper joint pipe, and then the bidirectional screw rod is rotated until the clamping slot on the plug is clamped with the upper fixed plate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is the overall structure schematic view of the utility model;

[0016] Fig. 2 It is the movable plate structure schematic view of the utility model;

[0017] Fig. 3 It is the whole cross section schematic view of the utility model.

[0018] The figure label explanation: 1, upper joint pipe; 2, lower joint pipe; 3, upper fixed plate; 4, lower fixed plate; 5, movable plate; 6, plug-in plate; 7, through slot; 8, plug-in slot; 9, clamping slot; 10, bidirectional screw rod; 11, nut; 12, support plate; 13, limiting rod; 14, spring; 15, chamfer. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figs. 1 to 3 The utility model discloses a novel ceramic plug valve, which comprises an upper joint pipe 1 and a lower joint pipe 2. The upper joint pipe 1 is fixedly connected with an upper fixed plate 3 outside. The lower joint pipe 2 is fixedly connected with a lower fixed plate 4 outside. The lower joint pipe 2 is sleeved with a movable plate 5 outside. The movable plate 5 is a semicircular arc structure, and its inner side wall is attached to the outer side wall of the lower joint pipe 2. The movable plate 5 is slidably connected with the lower joint pipe 2. The top of the movable plate 5 is fixedly connected with a plug-in plate 6. A through slot 7 is formed in the lower fixed plate 4. The plug-in plate 6 passes through the through slot 7 and extends above the lower fixed plate 4. The plug-in plate 6 is slidably connected with the through slot 7. A plug-in slot 8 is formed in the upper fixed plate 3. The plug-in slot 8 is used in cooperation with the plug-in plate 6. A clamping slot 9 is formed on one side of the plug-in plate 6. The clamping slot 9 is used in cooperation with the upper fixed plate 3. After the plug-in plate 6 passes through the plug-in slot 8, the movable plate 5 is controlled to move, so that the movable plate 5 drives the plug-in plate 6 to move until the clamping slot 9 on the plug-in plate 6 is clamped with the upper fixed plate 3, thereby realizing the quick joint of the upper joint pipe 1 and the lower joint pipe 2.

[0021] Further, the clamping slot 9 is a right trapezoidal structure. The right trapezoidal structure makes the inner side of the clamping slot 9 have an inclined surface. The inclined surface directly abuts against the upper fixed plate 3 and can extrude the upper fixed plate 3, so that the upper fixed plate 3 and the lower fixed plate 4 can be more tightly attached.

[0022] Further, the two movable plates 5 are symmetrically distributed, a bidirectional screw rod 10 is arranged between the two movable plates 5, the bidirectional screw rod 10 vertically penetrates the movable plate 5 and extends to the other side of the movable plate 5, the bidirectional screw rod 10 is in threaded connection with the movable plate 5, a nut 11 is projected on the outside of the bidirectional screw rod 10, the nut 11 is fixedly connected with the bidirectional screw rod 10, the bidirectional screw rod 10 is rotated through the nut 11, and the two movable plates 5 are simultaneously moved by the bidirectional screw rod 10, so that the two movable plates 5 are close to or away from each other.

[0023] Further, the two movable plates 5 are symmetrically distributed, a bidirectional screw rod 10 is arranged between the two movable plates 5, the bidirectional screw rod 10 vertically penetrates the movable plate 5 and extends to the other side of the movable plate 5, the bidirectional screw rod 10 is in threaded connection with the movable plate 5, a nut 11 is projected on the outside of the bidirectional screw rod 10, the nut 11 is fixedly connected with the bidirectional screw rod 10, the bidirectional screw rod 10 is rotated through the nut 11, and the two movable plates 5 are simultaneously moved by the bidirectional screw rod 10, so that the two movable plates 5 are close to or away from each other.

[0024] Further, the inside of the plug plate 6 is slidably connected with a limiting rod 13, the limiting rod 13 is fixedly connected with the lower fixed plate 4, a spring 14 is sleeved on the outside of the limiting rod 13 and located between the plug plate 6 and the through groove 7, the position of the plug plate 6 is limited by the limiting rod 13, so that the plug plate 6 moves more stably, and the plug plate 6 has a tendency to automatically approach the upper fixed plate 3 due to the elastic force of the spring 14, which is favorable for the clamping of the upper fixed plate 3 and the clamping groove 9.

[0025] Further, the outside of the plug plate 6, away from the movable plate 5, is provided with a chamfer 15, since the plug plate 6 needs to pass through the plug groove 8, the area of one side of the plug plate 6 is smaller due to the chamfer 15, which is more favorable for the plug plate 6 to be inserted into the plug groove 8 and for the combination of the plug plate 6 and the plug groove 8.

[0026] The use steps of the utility model are as follows: when the ceramic plug valve is used, the upper joint pipe 1 and the lower joint pipe 2 are spliced together, the plug plate 6 on the lower joint pipe 2 passes through the plug groove 8 on the upper joint pipe 1, then the bidirectional screw rod 10 is rotated, the two movable plates 5 are close to each other driven by the bidirectional screw rod 10, at this time, the plug plate 6 approaches the upper fixed plate 3, until the clamping groove 9 on the plug plate 6 is clamped with the upper fixed plate 3, since the clamping groove 9 is a right trapezoidal structure, the inside of the clamping groove 9 has an inclined surface, the inclined surface directly abuts against the upper fixed plate 3, and the upper fixed plate 3 is extruded through the inclined surface, so that the upper fixed plate 3 and the lower fixed plate 4 can be more tightly attached, finally the upper joint pipe 1 and the lower joint pipe 2 are spliced, compared with the ceramic-lined ceramic plug valve with patent No.

[0027] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit 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 new ceramic plug valve, comprising an upper joint pipe (1) and a lower joint pipe (2), an upper fixed plate (3) is fixedly connected to the outside of the upper joint pipe (1), and a lower fixed plate (4) is fixedly connected to the outside of the lower joint pipe (2), characterized in that: The outer sleeve of the lower pipe (2) is provided with a movable plate (5), the movable plate (5) is in sliding connection with the lower pipe (2), the top of the movable plate (5) is fixedly connected with an insertion plate (6), the inner part of the lower fixed plate (4) is provided with a through slot (7), the insertion plate (6) passes through the through slot (7) and extends above the lower fixed plate (4), the insertion plate (6) is in sliding connection with the through slot (7), the inner part of the upper fixed plate (3) is provided with an insertion slot (8), the insertion slot (8) is used in cooperation with the insertion plate (6), one side of the insertion plate (6) is provided with a clamping groove (9), and the clamping groove (9) is used in cooperation with the upper fixed plate (3).

2. The new ceramic stopcock valve according to claim 1, characterized by: The clamping groove (9) is a right trapezoidal structure.

3. The new ceramic stopcock valve according to claim 1, characterized in that: The movable plate (5) is provided with two, the two movable plates (5) are symmetrically distributed, and a bidirectional screw rod (10) is arranged between the two movable plates (5), the bidirectional screw rod (10) penetrates through the movable plate (5) vertically and extends to the other side of the movable plate (5), the bidirectional screw rod (10) is in threaded connection with the movable plate (5), and nuts (11) are projected on the outer part of the bidirectional screw rod (10).

4. The new ceramic stopcock valve according to claim 3, characterized in that: The outer part of the bidirectional screw rod (10) and the corresponding two sides of the nut (11) are provided with support plates (12), the support plates (12) are fixedly connected with the lower pipe (2), and the bidirectional screw rod (10) is in rotary connection with the support plates (12).

5. The new ceramic stopcock valve according to claim 1, characterized in that: The inner part of the insertion plate (6) is in sliding connection with a limiting rod (13), the limiting rod (13) is fixedly connected with the lower fixed plate (4), and the outer part of the limiting rod (13) and between the insertion plate (6) and the through slot (7) are provided with springs (14).

6. The new ceramic stopcock valve according to claim 1, characterized in that: The outer part of the insertion plate (6) is provided with a chamfer (15) away from one side of the movable plate (5).

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