Plunger end cover for pressure reducing device

Abstract

The utility model discloses a plunger end cover for a pressure reducing device, and relates to the technical field of plunger end covers. An end cover is arranged at the top of the mounting base, an inserting ring is fixedly connected to the bottom of the end cover, a limiting ring is fixedly connected to the inner wall of the mounting base, a fixing ring is arranged above the limiting ring, a first annular clamping groove is formed in the outer surface of the inserting ring, and a first sealing ring is connected to the inner wall of the first annular clamping groove in a sleeved mode. A second annular clamping groove is formed in the outer surface of the limiting ring, a second sealing ring is connected to the inner wall of the second annular clamping groove in a sleeving mode, and three positioning blocks are fixedly connected to the bottom of the end cover. According to the utility model, the insertion ring is arranged, specifically, after the insertion ring enters the interior of the mounting base, the insertion ring is respectively inserted into the limiting ring and the fixing ring, the outer surface of the sealing ring II is in contact with the surface of the insertion ring, and the outer surface of the sealing ring I is in contact with the surface of the fixing ring, so that a double-layer sealing effect is achieved, the use stability is improved, and the leakage condition is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of plunger end caps, and particularly relates to a plunger end cap for a pressure reducing device. Background Technique

[0002] Plungers are usually used inside pressure reducing devices and are widely used in occasions where high pressure, large flow rate, and flow rate need to be adjusted. The connection between plungers needs to be fixed with end caps. The existing plunger end caps are usually connected and fixed with bolts during installation, and only rely on the fixation of bolts to play a sealing role. This method has a poor sealing effect and is prone to leakage, thus affecting the use of the pressure reducing device. Therefore, we propose a plunger end cap for a pressure reducing device. Content of the Utility Model

[0003] The purpose of the utility model is to provide a plunger end cap for a pressure reducing device. By setting an insertion ring, specifically, when the insertion ring enters the installation base, it will be inserted into the limit ring and the fixed ring respectively. Then, the outer surface of the second seal ring contacts the surface of the insertion ring, and the outer surface of the first seal ring contacts the surface of the fixed ring, thereby playing a double-layer sealing role, improving the stability during use, and avoiding leakage. It solves the problem that the existing plunger end caps are usually connected and fixed with bolts during installation, and only rely on the fixation of bolts to play a sealing role, and this method has a poor sealing effect and is prone to leakage.

[0004] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0005] The utility model is a plunger end cap for a pressure reducing device, including an installation base. A end cap is arranged on the top of the installation base. An insertion ring is fixedly connected to the bottom of the end cap. A limit ring is fixedly connected to the inner wall of the installation base. A fixed ring is arranged above the limit ring;

[0006] A first annular groove is formed on the outer surface of the insertion ring. A first seal ring is sleeved on the inner wall of the first annular groove. A second annular groove is formed on the outer surface of the limit ring. A second seal ring is sleeved on the inner wall of the second annular groove. By setting the insertion ring, specifically, when the insertion ring enters the installation base, it will be inserted into the limit ring and the fixed ring respectively. Then, the outer surface of the second seal ring contacts the surface of the insertion ring, and the outer surface of the first seal ring contacts the surface of the fixed ring, thereby playing a double-layer sealing role, improving the stability during use, and avoiding leakage.

[0007] Furthermore, three positioning blocks are fixedly connected to the bottom of the end cap. The three positioning blocks are arranged in a circumferential array with the insertion ring as the center. A number of jacks are formed inside the end cap. The number of jacks are arranged in an annular array with the insertion ring as the center. After the positioning blocks enter the positioning holes, they are used to position the end cap, so that the jacks formed on the end cap can be smoothly aligned with the threaded holes formed on the top of the installation base.

[0008] Further, the top of the limiting ring is inserted into the bottom of the inserting ring, the outer surface of the fixing ring is fixedly connected to the inner wall of the mounting base, three positioning holes are formed in the top of the mounting base, the three positioning holes are arranged in a circular array centered on the inserting ring, a plurality of threaded holes are formed in the top of the mounting base, the plurality of threaded holes are arranged in a circular array centered on the inserting ring, and the insertion holes correspond to the threaded holes, which facilitates the subsequent fixing of the end cover and the mounting base using bolts.

[0009] Further, a circular groove is formed in the top of the fixing ring, a pressing ring is slidably connected to the inner wall of the circular groove, a plurality of limiting grooves are formed in the bottom of the circular groove, a limiting rod is slidably connected to the inner wall of the limiting groove, and a limiting block is fixedly connected to the bottom of the limiting rod. By providing the pressing ring, specifically, after the end cover is installed, the inserting ring will squeeze the pressing ring downward. When the end cover needs to be disassembled, the plurality of bolts are disassembled, and then the pressing ring is reset upward under the elastic action of the spring, and the pressing ring will push the inserting ring upward, thereby ejecting the end cover, which facilitates the rapid disassembly by the staff and makes the operation more convenient.

[0010] Further, a spring is fixedly connected to the top of the limiting block, the top of the spring is fixedly connected to the top inner wall of the limiting groove, the top of the limiting rod is fixedly connected to the bottom of the pressing ring, the outer surface of the second sealing ring contacts the surface of the end cover, the outer surface of the first sealing ring contacts the surface of the fixing ring, and the inserting ring is inserted into the fixing ring. The limiting rod can limit the pressing ring to make the pressing ring move in a straight line.

[0011] Further, the positioning block is adapted to the positioning hole, the bottom of the end cover contacts the top of the mounting base, the top of the pressing ring contacts the surface of the inserting ring, and the outer surface of the inserting ring contacts the inner wall of the mounting base. When the inserting ring is installed, it will squeeze the pressing ring downward, so the pressing ring slides in the fixing ring, and at the same time drives the limiting rod and the limiting block to move downward together, and stretches the spring.

[0012] The utility model has the following beneficial effects:

[0013] 1. By providing the inserting ring, specifically, after the inserting ring enters the inside of the mounting base, it will be inserted into the limiting ring and the fixing ring respectively. Then, the outer surface of the second sealing ring contacts the surface of the inserting ring, and the outer surface of the first sealing ring contacts the surface of the fixing ring, thereby playing a double-layer sealing role, improving the stability during use, and avoiding leakage.

[0014] 2. By providing the pressing ring, specifically, after the end cover is installed, the inserting ring will squeeze the pressing ring downward. When the end cover needs to be disassembled, the plurality of bolts are disassembled, and then the pressing ring is reset upward under the elastic action of the spring, and the pressing ring will push the inserting ring upward, thereby ejecting the end cover, which facilitates the rapid disassembly by the staff and makes the operation more convenient.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 It is a schematic diagram of the internal sectional structure of the installation base of this utility model;

[0019] Figure 3 It is this utility model Figure 2 A magnified schematic diagram of A therein;

[0020] Figure 4 It is a schematic diagram of the bottom structure of the end cover of this utility model;

[0021] Figure 5 It is a schematic diagram of the top structure of the installation base of this utility model;

[0022] Figure 6 It is a schematic diagram of the overall structure of the compression ring of this utility model.

[0023] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0024] 1. Installation base; 11. End cover; 111. Insertion ring; 112. Positioning block; 113. Seal ring I; 114. Insertion hole; 12. Limiting ring; 121. Seal ring II; 13. Fixed ring; 131. Compression ring; 132. Limiting rod; 133. Limiting block; 134. Spring; 14. Positioning hole; 15. Threaded hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of this utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this utility model without creative efforts fall within the scope of protection of this utility model.

[0026] Please refer to Figures 1-6As shown in the figure, the utility model is a plunger end cover for a pressure reducing device, including an installation base 1. A end cover 11 is arranged on the top of the installation base 1. A plug ring 111 is fixedly connected to the bottom of the end cover 11. A limiting ring 12 is fixedly connected to the inner wall of the installation base 1. A fixing ring 13 is arranged above the limiting ring 12;

[0027] An annular clamping groove one is formed on the outer surface of the plug ring 111. A sealing ring one 113 is sleeved on the inner wall of the annular clamping groove one. An annular clamping groove two is formed on the outer surface of the limiting ring 12. A sealing ring two 121 is sleeved on the inner wall of the annular clamping groove two. By setting the plug ring 111, specifically when the plug ring 111 enters the inside of the installation base 1, it will be inserted into the limiting ring 12 and the fixing ring 13 respectively. Then, the outer surface of the sealing ring two 121 contacts the surface of the plug ring 111, and the outer surface of the sealing ring one 113 contacts the surface of the fixing ring 13, thus playing a double-layer sealing role, improving the stability during use and avoiding leakage.

[0028] Three positioning blocks 112 are fixedly connected to the bottom of the end cover 11. The three positioning blocks 112 are arranged in a circumferential array with the plug ring 111 as the center. A number of jacks 114 are formed inside the end cover 11. The number of jacks 114 are arranged in an annular array with the plug ring 111 as the center.

[0029] The top of the limiting ring 12 is inserted into the bottom of the plug ring 111. The outer surface of the fixing ring 13 is fixedly connected to the inner wall of the installation base 1. Three positioning holes 14 are formed on the top of the installation base 1. The three positioning holes 14 are arranged in an annular array with the plug ring 111 as the center. A number of threaded holes 15 are formed on the top of the installation base 1. The number of threaded holes 15 are arranged in an annular array with the plug ring 111 as the center.

[0030] An annular groove is formed on the top of the fixing ring 13. A pressing ring 131 is slidably connected to the inner wall of the annular groove. A number of limiting grooves are formed at the bottom of the annular groove. A limiting rod 132 is slidably connected to the inner wall of the limiting groove. The bottom of the limiting rod 132 is fixedly connected to a limiting block 133. By setting the pressing ring 131, specifically after the end cover 11 is installed, the plug ring 111 will squeeze the pressing ring 131 downward. When it is necessary to disassemble the end cover 11, remove multiple bolts, then the pressing ring 131 is reset upward under the elastic action of the spring 134, and the pressing ring 131 will push the plug ring 111 upward, thus ejecting the end cover 11, facilitating the staff to quickly disassemble and making the operation more convenient.

[0031] The top of the limiting block 133 is fixedly connected to a spring 134. The top of the spring 134 is fixedly connected to the top of the inner wall of the limiting groove. The top of the limiting rod 132 is fixedly connected to the bottom of the pressing ring 131. The outer surface of the sealing ring two 121 contacts the surface of the end cover 11. The outer surface of the sealing ring one 113 contacts the surface of the fixing ring 13. The plug ring 111 is inserted into the fixing ring 13.

[0032] The positioning block 112 is adapted to the positioning hole 14. The bottom of the end cover 11 contacts the top of the mounting base 1. The top of the pressing ring 131 contacts the surface of the inserting ring 111. The outer surface of the inserting ring 111 contacts the inner wall of the mounting base 1.

[0033] A specific application of this embodiment is as follows:

[0034] During use, first put the first sealing ring 113 on the outer surface of the inserting ring 111 where there is a first annular groove. Then, put the second sealing ring 121 on the second annular groove provided on the surface of the limiting ring 12. Subsequently, insert the end cover 11 into the top of the mounting base 1 through the inserting ring 111 at the bottom. Then, the positioning block 112 will enter the positioning hole 14 to position the end cover 11, so that the jack 114 provided on the end cover 11 can be successfully aligned with the threaded hole 15 provided on the top of the mounting base 1, facilitating subsequent fixing of the end cover 11 and the mounting base 1 with bolts. There is no need for the staff to continuously adjust the position of the mounting base 1 for alignment. When the inserting ring 111 enters the interior of the mounting base 1, it will be inserted into the limiting ring 12 and the fixing ring 13 respectively. Then, the outer surface of the second sealing ring 121 contacts the surface of the inserting ring 111, and the outer surface of the first sealing ring 113 contacts the surface of the fixing ring 13, thus playing a double-layer sealing role, improving the stability during use and avoiding leakage. At the same time, when the inserting ring 111 is installed, it will squeeze the pressing ring 131 downward. Then, the pressing ring 131 slides within the fixing ring 13, driving the limiting rod 132 and the limiting block 133 to move downward together and stretching the spring 134. The limiting rod 132 can limit the pressing ring 131 to make a linear motion. Finally, the end cover 11 can be installed on the mounting base 1 by using multiple bolts. When it is necessary to disassemble the end cover 11, remove the multiple bolts. Then, the pressing ring 131 is reset upward under the elastic action of the spring 134, and the pressing ring 131 pushes the inserting ring 111 upward, thus ejecting the end cover 11, facilitating the staff to quickly disassemble and making the operation more convenient.

[0035] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] The above-described preferred embodiments of the utility model disclosed are only used to help illustrate the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the utility model, so that those skilled in the art can well understand and utilize the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A plunger end cap for a pressure reducing device, comprising a mounting base (1), an end cap (11) being arranged on the top of the mounting base (1), and an insert ring (111) being fixedly connected to the bottom of the end cap (11), characterized in that: A limiting ring (12) is fixedly connected to the inner wall of the mounting base (1), and a fixing ring (13) is arranged above the limiting ring (12); The outer surface of the insert ring (111) begins to have an annular groove 1, the inner wall of which is sleeved with a sealing ring 1 (113); the outer surface of the limiting ring (12) is provided with an annular groove 2, the inner wall of which is sleeved with a sealing ring 2 (121).

2. A plunger end cap for a pressure reducing device according to claim 1, characterized in that: Three positioning blocks (112) are fixedly connected to the bottom of the end cover (11), and the three positioning blocks (112) are arranged in a circular array with the insert ring (111) as the center. A plurality of insertion holes (114) are opened inside the end cover (11), and the plurality of insertion holes (114) are arranged in a circular array with the insert ring (111) as the center.

3. A plunger end cap for a pressure reducing device according to claim 2, characterized in that: The top of the limiting ring (12) is plugged into the bottom of the plug ring (111); the outer surface of the fixing ring (13) is fixedly connected to the inner wall of the mounting base (1); three positioning holes (14) are provided on the top of the mounting base (1); the three positioning holes (14) are arranged in a circular array with the plug ring (111) as the center; a plurality of threaded holes (15) are provided on the top of the mounting base (1); the plurality of threaded holes (15) are arranged in a circular array with the plug ring (111) as the center.

4. A plunger end cap for a pressure reducing device according to claim 3, characterized in that: The top of the fixing ring (13) is provided with an annular groove, the inner wall of the annular groove is slidably connected to a pressure ring (131), the bottom of the annular groove is provided with a plurality of limit grooves, the inner wall of the limit groove is slidably connected to a limit rod (132), and the bottom of the limit rod (132) is fixedly connected to a limit block (133).

5. A plunger end cap for a pressure reducing device according to claim 4, characterized in that: The top of the limiting block (133) is fixedly connected to a spring (134), the top of the spring (134) is fixedly connected to the top of the inner wall of the limiting groove, and the top of the limiting rod (132) is fixedly connected to the bottom of the pressure ring (131).

6. A plunger end cap for a pressure reducing device according to claim 4, characterized in that: The outer surface of the second sealing ring (121) contacts the surface of the end cover (11), the outer surface of the first sealing ring (113) contacts the surface of the fixing ring (13), and the insert ring (111) is plugged into the fixing ring (13).

7. A plunger end cap for a pressure reducing device according to claim 4, characterized in that: The positioning block (112) is matched with the positioning hole (14), the bottom of the end cover (11) contacts the top of the mounting base (1), the top of the pressure ring (131) contacts the surface of the insert ring (111), and the outer surface of the insert ring (111) contacts the inner wall of the mounting base (1).

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