Venturi tube sealing structure

Abstract

The utility model discloses a venturi tube sealing structure, and relates to the technical field of venturi tube sealing. The venturi tube comprises a venturi tube body, wherein two cavities are formed in one side of the venturi tube body; the upper ends of the pull rods are in threaded fit with the interior of the Venturi tube body, the lower ends of the pull rods are in threaded fit with fixing cylinders, rotating rods are fixedly matched with the lower ends of the fixing cylinders, sealing covers are rotationally matched with the peripheral sides of the rotating rods, and the upper sides of the sealing covers are located at the lower ends of the cavities. According to the venturi tube, the sealing cover is attached to the lower end of the cavity under the action of the fixing cylinder, the cavity is sealed through the sealing cover, the situation that the sealing effect of the venturi tube body is affected by the assembling process of a fixing plug pin in the prior art is reduced, and the sealing process of the venturi tube body is more convenient and faster.

Description

Technical Field

[0001] This utility model belongs to the field of venturi tube sealing, specifically, it relates to a venturi tube sealing structure. Background Technology

[0002] A venturi tube is a device used to measure differential pressure in fluids. It measures the pressure difference between the inlet and minimum cross-sections of the tube, based on its initial contraction followed by gradual expansion. A sealing structure is required to maintain the venturi tube's placement area.

[0003] Patent application CN220600428U discloses a sealing structure for a venturi tube. Paragraph 0022 of the specification describes a method where a fixed block is rotated to a suitable position, and then a pull rod is rotated through a circular groove. The top of the pull rod is connected to a turntable via a pin. Rotating the turntable causes the fixed block to press against the sealing rubber ring, thus sealing the connecting pipe. This sealing structure for a venturi tube connects the sealing cap and the pull rod via a fixed pin. The rotation of the pull rod causes the sealing cap to gradually tighten, compressing the sealing rubber gasket to achieve a sealing effect. Because the sealing cap and the pull rod are connected by a plug-in connection, the replacement and maintenance of the sealing cap are very simple and convenient.

[0004] However, in practical applications, the Venturi tube body needs to be sealed with a sealing cap and a sealing rubber gasket. The connecting block B needs to be positioned at the lower end of the pull rod with a fixing pin. Since the process of disassembling the fixing pin is relatively complicated, the fixing pin will affect the efficiency of disassembling the connecting block B, which in turn will affect the sealing effect of the Venturi tube body.

[0005] To address these shortcomings, a venturi tube sealing structure is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a venturi tube sealing structure.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A venturi tube sealing structure includes a venturi tube body, wherein two cavities are formed on one side of the venturi tube body;

[0009] Two pull rods are provided. The upper end of the pull rod is threaded into the interior of the venturi tube body, and the lower end of the pull rod is threaded into a fixed cylinder. The lower end of the fixed cylinder is fixedly fitted with a rotating rod, and a sealing cover is rotatably fitted around the rotating rod. The upper side of the sealing cover is located at the lower end of the cavity.

[0010] Optionally, two connecting blocks are fixedly fitted on the upper side of the venturi tube body, and a threaded hole is provided on one side of the connecting block, with the adjacent threaded hole communicating with the cavity.

[0011] Optionally, the upper end of the pull rod is provided with a first external thread, which is threaded into the threaded hole.

[0012] Optionally, the lower end of the pull rod is provided with a second external thread, and the inner side wall of the fixed cylinder is provided with an internal thread, wherein the second external thread and the internal thread are threadedly engaged.

[0013] Optionally, two L-shaped rods are fixedly fitted to the outer wall of the rotating rod, and one side of the fixed cylinder is fixedly fitted to one end of the L-shaped rods.

[0014] Optionally, the lower end of the pull rod is provided with a first through hole, and the upper end of the rotating rod is located inside the first through hole.

[0015] Optionally, the upper end of the pull rod is fixedly fitted with a first rotating disk, and the lower end of the rotating rod is fixedly fitted with a second rotating disk.

[0016] Optionally, a second through hole is provided on one side of the sealing cover, and the rotating rod is located inside the second through hole.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0018] The sealing cap is designed to fit against the lower end of the cavity under the action of the fixing cylinder, and the cavity is sealed by the sealing cap. This reduces the impact of the fixing pin assembly process on the sealing effect of the Venturi tube body in the prior art, and makes the sealing process of the Venturi tube body more convenient.

[0019] The second through hole is designed to allow the rotating rod to rotate inside the sealing cover under the action of the operator. The second through hole also guides the rotation direction of the rotating rod, reducing the problem of tilting during rotation and improving the stability of the rotating rod during rotation.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the picture:

[0023] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of a pull rod structure according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the connecting block structure according to an embodiment of the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] Venturi tube body 100, cavity 101, connecting block 102, threaded hole 103, pull rod 104, first rotating disk 105, sealing cover 106, rotating rod 107, second through hole 108, second rotating disk 109, L-shaped rod 110, fixed cylinder 111, first through hole 112.

[0029] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Please see Figure 1-4 As shown, this embodiment provides a venturi tube sealing structure, including a venturi tube body 100, with two cavities 101 opened on one side of the venturi tube body 100.

[0032] Two pull rods 104 are provided. The upper end of the pull rod 104 is threaded into the inside of the venturi tube body 100. The lower end of the pull rod 104 is threaded into a fixed cylinder 111. The lower end of the fixed cylinder 111 is fixedly fitted with a rotating rod 107. A sealing cover 106 is rotatably fitted around the rotating rod 107. The upper side of the sealing cover 106 is located at the lower end of the cavity 101.

[0033] Working principle:

[0034] First, place the pull rod 104 inside the cavity 101, and then rotate the rotating rod 107. The rotating rod 107 drives the fixed cylinder 111 to rotate, and the inner side wall of the fixed cylinder 111 is threaded onto the outer side wall of the lower end of the pull rod 104. The rotating rod 107 drives the sealing cover 106 to fit against the lower end of the cavity 101, and the cavity 101 is sealed by the sealing cover 106.

[0035] The sealing cap 106 is provided so that it fits against the lower end of the cavity 101 under the action of the fixing cylinder 111, and the cavity 101 is sealed by the sealing cap 106. This reduces the process of assembling the fixing pin in the prior art, which affects the sealing effect of the Venturi tube body 100, and makes the sealing process of the Venturi tube body 100 more convenient.

[0036] To make the rotation of the sealing cover 106 on the rotating rod 107 side of this embodiment more stable, improvements are made through the following structure, such as... Figure 1-4 As shown, in this embodiment, two connecting blocks 102 are fixedly fitted on the upper side of the venturi tube body 100. A threaded hole 103 is provided on one side of each connecting block 102, and adjacent threaded holes 103 communicate with the cavity 101. A first external thread is provided at the upper end of the pull rod 104, and the first external thread is threadedly engaged with the threaded hole 103. A second external thread is provided at the lower end of the pull rod 104. An internal thread is provided on the inner wall of the fixed cylinder 111, and the second external thread is threadedly engaged with the internal thread. The outer wall of the rotating rod 107 is fixed... Two L-shaped rods 110 are fitted together. One side of the fixed cylinder 111 is fixedly fitted to one end of the L-shaped rod 110. The lower end of the pull rod 104 is provided with a first through hole 112. The upper end of the rotating rod 107 is located inside the first through hole 112. The upper end of the pull rod 104 is fixedly fitted with a first rotating disk 105. The lower end of the rotating rod 107 is fixedly fitted with a second rotating disk 109. One side of the sealing cover 106 is provided with a second through hole 108. The rotating rod 107 is located inside the second through hole 108.

[0037] In this embodiment, the first rotating disk 105 is rotated first, causing the pull rod 104 to be threaded into the threaded hole 103. Then, the second rotating disk 109 is rotated, causing the rotating rod 107 to rotate inside the second through hole 108. One end of the rotating rod 107 is placed inside the pull rod 104 through the first through hole 112. The rotating rod 107 drives the fixed cylinder 111 to rotate through the L-shaped rod 110. The fixed cylinder 111 is threaded into the lower end of the pull rod 104 through the internal thread. The rotating rod 107 drives the sealing cover 106 to adhere to the lower end of the cavity 101 through the second through hole 108, thereby completing the sealing of the Venturi tube body 100.

[0038] The second through hole 108 is provided so that the rotating rod 107 can rotate inside the sealing cover 106 through the second through hole 108 under the action of the operator, and the rotation direction of the rotating rod 107 is guided by the second through hole 108, which reduces the problem of the rotating rod 107 tilting when rotating and improves the stability of the rotating rod 107 when rotating.

[0039] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A venturi seal structure, characterized by, Include: Venturi tube body (100), one side of the venturi tube body (100) is provided with two cavities (101); Two pull rods (104), the upper end of the pull rod (104) is threadedly connected in the venturi tube body (100), the lower end of the pull rod (104) is threadedly connected with a fixed cylinder (111), the lower end of the fixed cylinder (111) is fixedly connected with a rotating rod (107), the circumferential side of the rotating rod (107) is rotatably connected with a sealing cover (106), the upper side of the sealing cover (106) is located at the lower end of the cavity (101).

2. A venturi seal according to claim 1, wherein, The upper side of the venturi tube body (100) is fixedly connected with two connecting blocks (102), one side of the connecting block (102) is provided with a threaded hole (103), and adjacent threaded holes (103) are communicated with the cavity (101).

3. A venturi seal according to claim 2, wherein, The upper end of the pull rod (104) is provided with a first external thread, and the first external thread is threadedly connected with the threaded hole (103).

4. A venturi seal according to claim 1, wherein, The lower end of the pull rod (104) is provided with a second external thread, and the inner side wall of the fixed cylinder (111) is provided with an internal thread, and the second external thread is threadedly connected with the internal thread.

5. A venturi seal according to claim 1, wherein, The outer side wall of the rotating rod (107) is fixedly connected with two L-shaped rods (110), and one side of the fixed cylinder (111) is fixedly connected on one end of the L-shaped rod (110).

6. A venturi seal according to claim 1, wherein, The lower end of the pull rod (104) is provided with a first through hole (112), and the upper end of the rotating rod (107) is located in the first through hole (112).

7. A venturi seal according to claim 1, wherein, One side of the sealing cover (106) is provided with a second through hole (108), and the rotating rod (107) is located in the second through hole (108).

8. A venturi seal according to claim 1, wherein, The upper end of the pull rod (104) is fixedly connected with a first rotating disc (105), and the lower end of the rotating rod (107) is fixedly connected with a second rotating disc (109).

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