Desalted water plug-in flowmeter sealing device

Abstract

A groove is formed in a flow meter, a rubber fixing ring is installed in the groove, when the flow meter is installed on a reserved seat, the fixing ring is erected on a boss of the reserved seat, the circumference of the outer side of the fixing ring makes contact with the inner wall of the reserved seat, an anti-seepage table is arranged at the bottom end of the fixing ring, and the anti-seepage table is arranged at the bottom end of the fixing ring. The anti-seepage table is in contact with the inner wall of the reserved seat, a cavity is reserved between the anti-seepage table and the flowmeter to prevent liquid leakage, the flowmeter is sleeved with the fixing cover, the fixing cover is screwed on the reserved seat, a first sealing ring is arranged between the fixing cover and the reserved seat, and the first sealing ring overcomes plastic deformation caused by temperature change through extrusion, blocks a gap and avoids leakage; the connecting pipe and the runner pipe are connected through threads, a gap is reserved at the cut-off end of the external threads, a second sealing ring is installed at the gap, after the connecting pipe and the runner pipe are installed, the second sealing ring is extruded, leakage at the connecting position is prevented, the connecting end is further provided with a flange plate, the connecting position is further sealed, and leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of flowmeter sealing, in particular to a desalted water insertion type flowmeter sealing device. Background Technique

[0002] In the chemical water production system, most of the flowmeters for desalted water adopt an insertion design. These flowmeters are fixed on plastic pipes made of PVC material through reserved plastic interfaces. However, due to temperature fluctuations and other environmental factors, these insertion type flowmeters often have leakage problems during operation. Leakage not only reduces the system efficiency but also causes further damage to the equipment. In addition, when the sealing ring inside the flowmeter fails, the replacement process is very complex and difficult. Under the influence of high temperature and chemical media, the internal sensors of the flowmeter are often damaged, which makes the readings of the flowmeter inaccurate or even completely ineffective. This situation not only affects the accuracy of the data but also impacts the operation of the system. Since the installation and replacement processes of the flowmeter are relatively inconvenient, this further increases the difficulty and complexity of the maintenance work. Content of the Utility Model

[0003] The purpose of the utility model is to provide a desalted water insertion type flowmeter sealing device to solve the problems that the insertion type flowmeter often has leakage problems during operation, when the sealing ring inside the flowmeter fails, the replacement is very complex and difficult, and the installation and replacement processes of the flowmeter are relatively inconvenient, which further increases the difficulty and complexity of the maintenance work.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A desalted water insertion type flowmeter sealing device is installed on a connecting pipe made of PVC material, and includes a reserved seat, a flowmeter, a fixing ring, and a fixing cover. A reserved seat is arranged on the connecting pipe. The reserved seat is a through pipe, and its bottom end penetrates through the connecting pipe. An external thread groove is opened on the outer circumference of the reserved seat, and a boss is arranged on the inner wall of the reserved seat. A flowmeter is inserted into the reserved seat. A groove is opened on the outer circumference of the flowmeter, and a fixing ring is connected in the groove. The fixing ring is placed on the boss, and the outer circumference of the fixing ring abuts against the inner wall of the reserved seat. A fixing cover is sleeved on the flowmeter, arranged at the top of the fixing ring, and is slidably matched with the flowmeter. An internal thread groove is opened on the inner wall of the fixing cover, and the internal thread groove is used in cooperation with the external thread groove of the reserved seat. The fixing cover is screwed onto the reserved seat. A first sealing ring is arranged between the top end of the reserved seat and the fixing cover, and is sleeved on the flowmeter.

[0005] Preferably, the fixing ring is made of rubber material.

[0006] Preferably, a downwardly extending anti-seepage platform is further provided at the bottom end of the fixing ring. The outer circumference of the anti-seepage platform abuts against the inner wall of the reserved seat, and a cavity is left between the anti-seepage platform and the flowmeter to prevent leakage.

[0007] Preferably, external thread grooves are respectively formed on both sides of the connecting pipe. A gap is left between the cut-off end of the external thread groove and both side ends of the connecting pipe, and a second sealing ring is sleeved on the gap.

[0008] Preferably, it further includes flow-through pipes which are respectively arranged on the left and right sides of the connecting pipe. Internal thread grooves are formed on the inner walls of the flow-through pipes, and the internal thread grooves are used in cooperation with the external thread grooves of the connecting pipe. The flow-through pipes are respectively screwed onto the left and right sides of the connecting pipe, and the connecting ends of the flow-through pipes are closely attached to the connecting ends of the connecting pipe.

[0009] Preferably, a distance is provided between the internal thread groove and the connecting end of the flow-through pipe, and this distance corresponds to the gap between the cut-off end of the external thread groove of the connecting pipe and the side end of the connecting pipe, so as to squeeze the second sealing ring to prevent leakage.

[0010] Preferably, it further includes flange plates which are respectively arranged at the connecting ends of the flow-through pipes and the connecting pipe and are fastened by bolts.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] By providing a groove on the flowmeter and installing a rubber fixing ring in the groove, when the flowmeter is installed on the reserved seat, the fixing ring will be placed on the convex platform of the reserved seat. The outer circumference of the fixing ring contacts the inner wall of the reserved seat, and an anti-seepage platform is provided at the bottom end. The anti-seepage platform contacts the inner wall of the reserved seat and at the same time a cavity is left between the anti-seepage platform and the flowmeter to prevent liquid leakage. The fixing cover is sleeved on the flowmeter and screwed onto the reserved seat. A first sealing ring is provided between the fixing cover and the reserved seat. The first sealing ring overcomes the plastic deformation caused by temperature change through extrusion to seal the gap and avoid leakage. In addition, the connection between the connecting pipe and the flow-through pipe is connected by threads. A gap is left at the cut-off end of the external thread, and a second sealing ring is installed at the gap. After installing the connecting pipe and the flow-through pipe, the second sealing ring is squeezed to prevent leakage at the connection. Flange plates are also provided at the connecting ends to further seal the connection and prevent leakage. When replacing the internal sealing ring and the flowmeter, the fixing cover can be unscrewed, the fixing ring can be disassembled, and then the fixing cover can be slid out to complete the replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0014] Figure 2 It is a schematic diagram of the mutually cooperating structure of the connecting pipe and the flow-through pipe of the present utility model.

[0015] Figure 3This is a schematic diagram of the overall disassembly structure of the present utility model.

[0016] Figure 4 This is a schematic diagram of the mating structure of the reserved seat and the boss of the present utility model.

[0017] In the figure: 1, connecting pipe; 2, reserved seat; 3, flowmeter; 4, circulation pipe; 5, fixing ring; 6, first sealing ring; 7, fixing cover; 8, anti-seepage table; 9, boss; 10, flange; 11, second sealing ring. Specific embodiments

[0018] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0022] Embodiment 1: Please refer to Figure 1 , 3, 4. An embodiment provided by the present utility model: An insertion type flowmeter sealing device for demineralized water, installed on a connecting pipe 1 made of PVC material, includes a reserved seat 2, a flowmeter 3, a fixing ring 5, and a fixing cover 7. A reserved seat 2 is provided on the connecting pipe 1. The reserved seat 2 is the installation base of the flowmeter 3. It passes through the bottom end of the connecting pipe 1 and is fastened to the fixing cover 7 through an external thread groove. A boss 9 provided on the inner wall of the reserved seat 2 is used to support and position the fixing ring 5 to ensure the stable installation of the flowmeter 3. The reserved seat 2 is a through pipe, and its bottom end penetrates the connecting pipe 1. An external thread groove is provided on the outer circumferential surface of the reserved seat 2. A boss 9 is provided on the inner wall of the reserved seat 2. The flowmeter 3 is inserted into the reserved seat 2. The flowmeter 3 is the core component for measuring the fluid flow rate and is inserted into the reserved seat 2. A groove on its outer circumferential surface is used to accommodate the fixing ring 5, thereby fixing the position of the flowmeter 3. A groove is provided on the outer circumferential surface of the flowmeter 3, and the fixing ring 5 is connected in the groove. The fixing ring 5 is made of rubber. The fixing ring 5 is used to fix the flowmeter 3 in the reserved seat 2. Its rubber material provides good sealing performance, and by being placed on the boss 9, the outer circumference of the fixing ring 5 contacts the inner wall of the reserved seat 2, which helps prevent leakage. The fixing ring 5 is placed on the boss 9, and the top end of the fixing ring 5 abuts against the inner wall of the fixing cover 7. The outer circumference of the fixing ring 5 abuts against the inner wall of the reserved seat 2. A fixing cover 7 is sleeved on the flowmeter 3. The fixing cover 7 is used to fasten the flowmeter 3 and is fixed to the reserved seat 2 by screwing. Its internal thread groove cooperates with the external thread groove of the reserved seat 2 to ensure the tight connection between the fixing cover 7 and the reserved seat 2. The fixing cover 7 also protects and stabilizes the flowmeter 3. It is provided at the top end of the fixing ring 5 and is slidably fitted to the flowmeter 3. An internal thread groove is provided on the inner wall of the fixing cover 7. The internal thread groove is used in cooperation with the external thread groove of the reserved seat 2. The fixing cover 7 is screwed onto the reserved seat 2. A first sealing ring 6 is provided between the top end of the reserved seat 2 and the fixing cover 7. The first sealing ring 6 is sleeved on the flowmeter 3 and is located between the top end of the reserved seat 2 and the fixing cover 7 to further prevent fluid leakage. The first sealing ring 6 overcomes the plastic deformation caused by temperature changes through extrusion, thereby ensuring the sealing effect.

[0023] During installation, first, the fixing cover 7 is sleeved on the flowmeter 3. Subsequently, the rubber fixing ring 5 is stretched and sleeved in the groove of the flowmeter 3. Then, the fixing ring 5 of the flowmeter 3 is placed on the boss 9 of the reserved seat 2. Then, the first sealing ring 6 is connected to the top end of the reserved seat 2, and the fixing cover 7 is slid down while squeezing the first sealing ring 6. The fixing cover 7 and the reserved seat 2 are screwed together through the internal thread groove and the external thread groove. The first sealing ring 6 overcomes the plastic deformation caused by temperature changes through extrusion, thereby ensuring the sealing effect. When disassembling, first, the fixing cover 7 is unscrewed, then the flowmeter 3 is taken out. After disassembling the fixing ring 5, the fixing cover 7 is slid out, and the disassembly can be completed.

[0024] Embodiment 2: Please refer toFigure 3 , based on Example 1, it also has the following structure:

[0025] The bottom end of the fixed ring 5 is also provided with an anti-seepage platform 8 extending downward, and the outer circumferential side of the anti-seepage platform 8 is in contact with the inner wall of the reserved seat 2. Since the outer circumferential side of the anti-seepage platform 8 is in contact with the inner wall of the reserved seat 2, a sealed contact area is formed to effectively prevent leakage. The design of the anti-seepage platform 8 and its cooperation with the fixed ring 5 enable the system to effectively prevent leakage of liquid or gas. A cavity is left between the anti-seepage platform 8 and the flowmeter 3 to prevent leakage. The existence of the cavity allows a pressure zone to be set between the liquid and the flowmeter 3, and the outer circumferential side of the anti-seepage platform 8 is further in contact with the inner wall of the reserved seat 2 through water pressure.

[0026] Example 3: Please refer to Figure 2 , based on Example 1, it also has the following structure:

[0027] External thread grooves are respectively provided on both sides of the connecting pipe 1. A gap is left between the cut-off end of the external thread groove and the two side ends of the connecting pipe 1. A second sealing ring 11 is sleeved on the gap. The connecting pipe 1 is used as the main connecting component to connect the circulation pipes 4 on the left and right sides. The external thread grooves on both sides of the connecting pipe 1 cooperate with the internal thread grooves of the circulation pipe 4 to form a mechanical connection.

[0028] It also includes a flow pipe 4, which is respectively arranged on the left and right sides of the connecting pipe 1. The inner wall of the flow pipe 4 is provided with an internal thread groove, which is used in conjunction with the external thread groove of the connecting pipe 1. The flow pipe 4 is arranged on both sides of the connecting pipe 1 to cooperate with the internal thread groove on the flow pipe 4. Through this thread cooperation, a stable connection can be achieved and a smooth passage of the fluid can be ensured. The flow pipe 4 is respectively screwed on the left and right sides of the connecting pipe 1, and the connecting end of the flow pipe 4 is tightly fitted with the connecting end of the connecting pipe 1.

[0029] There is a spacing between the internal thread groove of the circulation tube 4 and the connecting end, and the spacing corresponds to the gap between the cut-off end of the external thread groove of the connecting tube 1 and the side end of the connecting tube 1, which is used to squeeze the second sealing ring 11 to prevent leakage. The second sealing ring 11 is sleeved on the gap between the external thread groove and the internal thread groove of the connecting tube 1. When the circulation tube 4 is connected to the connecting tube 1, the second sealing ring 11 is squeezed to ensure that the second sealing ring 11 fits tightly at the connection, thereby providing a sealing effect and ensuring that the connection part will not leak when subjected to pressure and fluid flow.

[0030] It also includes flanges 10, which are respectively arranged at the connection ends of the circulation pipe 4 and the connection pipe 1 and fastened by bolts. The flanges 10 are arranged at the connection ends of the circulation pipe 4 and the connection pipe 1 and fastened by bolts. The main function of the flanges 10 is to increase the stability and sealing of the connection. After the bolts are fastened, the strength of the connection can be improved to prevent the connection from loosening due to operation or vibration.

[0031] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the art are not described in detail herein. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A desalted water insertion flow meter sealing device, mounted on a connecting pipe (1) made of PVC, characterized in that: The invention comprises a reserved seat (2), a flow meter (3), a fixing ring (5), and a fixing cover (7). The connection pipe (1) is provided with the reserved seat (2). The reserved seat (2) is a through pipe, the bottom end of which passes through the connection pipe (1). An external thread groove is provided on the outer circumference of the reserved seat (2). A boss (9) is provided on the inner wall of the reserved seat (2). The flow meter (3) is inserted into the reserved seat (2). A groove is provided on the outer circumference of the flow meter (3). The fixing ring (5) is connected to the groove. The fixing ring (5) is mounted on the boss (9). The outer circumference of the fixing ring (5) contacts the inner wall of the reserved seat (2); the flow meter (3) is sleeved with a fixing cover (7) which is arranged on the top of the fixing ring (5) and is slidably matched with the flow meter (3); an inner thread groove is provided on the inner wall of the fixing cover (7) and is used in conjunction with the outer thread groove of the reserved seat (2); the fixing cover (7) is screwed onto the reserved seat (2); a first sealing ring (6) is provided between the top of the reserved seat (2) and the fixing cover (7) and is sleeved on the flow meter (3).

2. The desalted water insertion flow meter sealing device according to claim 1, characterized in that: The fixing ring (5) is made of rubber.

3. The desalted water insertion flow meter sealing device according to claim 1, characterized in that: The bottom end of the fixed ring (5) is also provided with an anti-seepage platform (8) extending downward, the outer circumference of the anti-seepage platform (8) abuts against the inner wall of the reserved seat (2), and a cavity is left between the anti-seepage platform (8) and the flow meter (3) to prevent leakage.

4. The desalted water insertion flow meter sealing device according to claim 1, characterized in that: External thread grooves are respectively provided on both sides of the connecting pipe (1), and gaps are left between the cut-off ends of the external thread grooves and both side ends of the connecting pipe (1), with second sealing rings (11) sleeved on the gaps.

5. The desalted water insertion flow meter sealing device according to claim 1, characterized in that: It also includes a circulation pipe (4) which is respectively arranged on the left and right sides of the connecting pipe (1). An internal thread groove is provided on the inner wall of the circulation pipe (4). The internal thread groove cooperates with the external thread groove of the connecting pipe (1). The circulation pipe (4) is respectively screwed on the left and right sides of the connecting pipe (1). The connecting end of the circulation pipe (4) is tightly fitted with the connecting end of the connecting pipe (1).

6. The sealing device of the desalted water insertion flowmeter according to claim 5, characterized in that: The internal thread groove of the circulation pipe (4) and the connection end are provided with a spacing, and the spacing corresponds to the gap provided between the cut-off end of the external thread groove of the connection pipe (1) and the side end of the connection pipe (1), and is used to squeeze the second sealing ring (11) to prevent leakage.

7. The desalted water insertion flow meter sealing device according to claim 1, characterized in that: It also includes flanges (10) which are respectively arranged at the connection ends of the circulation pipe (4) and the connection pipe (1) and are fastened by bolts.

Images