Low-temperature corrugated pipe sealing stop valve
By introducing a slow flow pipe and a slow flow plate structure into the bellows sealed stop valve, the impact force of the medium is buffered, the problem of easy damage of the sealing block is solved, and the sealing performance and service life are improved.
Patent Information
- Application Number
- CN202422994734.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-12-05
AI Technical Summary
When the existing bellows-sealed stop valve is in use, the medium has a great impact on the sealing block at the bottom of the valve disc, which makes the sealing block easily damaged, reduces the sealing performance and increases the number of maintenance times, affecting normal use.
A low-temperature bellows-sealed stop valve was designed. A slow-flow tube and slow-flow plate structure was set inside the valve body. The slow-flow plate was used to buffer the impact force of the medium and reduce the impact force on the sealing block. Combined with the filter ring and sealing ring, the connection sealing performance was improved and maintenance was facilitated.
It effectively reduces the impact force of the medium on the sealing block, avoids damage to the sealing block, improves the sealing performance and service life of the stop valve, and reduces the maintenance frequency.
Smart Images
Figure CN223331165U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of stop valves, in particular to a low-temperature bellows sealed stop valve. Background Art
[0002] Bellows sealed stop valve is a valve used to control the flow rate. It adopts bellows seal design, which eliminates the shortcomings of ordinary valve stem packing seal that ages quickly and leaks easily, improves energy efficiency and increases production equipment safety.
[0003] When the existing bellows-sealed stop valve is in use, the medium has a greater impact on the sealing block at the bottom of the valve disc when the internal valve disc is opened and closed. Over time, the sealing block is easily damaged, resulting in further reduction in the sealing performance of the stop valve, increasing the number of maintenance times of the stop valve, and thus affecting the normal use of the stop valve.
[0004] Therefore, it is necessary to provide a new low-temperature bellows sealed stop valve to solve the above technical problems. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a low-temperature bellows sealed stop valve which can buffer the impact force of the medium on the sealing block.
[0006] The low-temperature bellows-sealed stop valve provided by the utility model comprises a stop valve body, a valve seat is fixed inside the stop valve body, a valve disc is provided inside the stop valve body and on the top of the valve seat, a sealing block is fixedly connected to the bottom end of the valve disc, a valve stem is fixed to the top of the valve disc, a bellows is sleeved on the outside of the valve stem, and the valve stem extends out of the top end of the stop valve body and is fixedly connected to a handwheel.
[0007] The cam is provided with a first screw threaded hole, and the first screw threaded hole is provided on the cam face, and the cam face has a first screw threaded hole, and the cam face has a second screw threaded hole.
[0008] In order to achieve the effect of limiting the movement of the extrusion plate, the utility model provides a low-temperature bellows sealed stop valve. Preferably, a baffle is provided inside the second through hole and on the limiting rod, and the outer side of the baffle is fixedly connected to the inner wall of the second through hole.
[0009] In order to achieve the effect of improving the sealing performance of the connection between the slow-flow ring and the stop valve body, the utility model provides a low-temperature bellows sealed stop valve. Preferably, a plug ring is fixedly connected to one side of the slow-flow tube, and a first sealing ring is fixedly connected to the outside of the plug ring, and the outside of the first sealing ring abuts against the inner wall of the stop valve body.
[0010] In order to achieve the effect of filtering impurities in the medium, the utility model provides a low-temperature bellows sealed stop valve. Preferably, a circular ring is fixedly connected to the inside of the plug ring, a threaded hole is opened on the circular ring, a filter ring is screwed into the threaded hole, a filter screen is fixed on the filter ring, and a rotating rod is fixedly connected to one side of the filter ring.
[0011] In order to achieve the effect of convenient disassembly and assembly of the fixing ring and the slow-flow ring, the utility model provides a low-temperature bellows sealed stop valve. Preferably, a second sealing ring is fixedly connected to one side of the fixing ring, and a plurality of second bolts are provided on one side of the fixing ring. One end of the second bolt passes through the third through hole opened in the fixing ring and is screwed into the second threaded groove opened in the slow-flow tube.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] This low-temperature bellows-sealed stop valve can buffer the impact force of the medium during flow, thereby reducing the impact force of the medium on the sealing block, avoiding damage to the sealing block, and further avoiding affecting the sealing performance of the stop valve body, so that the stop valve body can be used normally. It solves the problem that when the existing bellows-sealed stop valve is in use, the medium has a large impact on the sealing block at the bottom of the valve disc when the internal valve disc is opened and closed. Over time, the sealing block is easily damaged, resulting in further reduction in the sealing performance of the stop valve, increasing the number of maintenance times of the stop valve, and affecting the normal use of the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic structural diagram of the low-temperature bellows sealed stop valve provided by the utility model;
[0015] Figure 2 For this utility model Figure 1 A in the middle is an enlarged schematic diagram;
[0016] Figure 3 This is a three-dimensional diagram of the slow flow pipe structure of the utility model;
[0017] Figure 4This is a three-dimensional diagram of the slow-flow ring structure of the utility model;
[0018] Figure 5 This is a three-dimensional diagram of the structure of the slow flow plate of the utility model;
[0019] Figure 6 This is a schematic diagram of the connection between the circular ring and the filter ring of the utility model;
[0020] Figure 7 This is a schematic diagram of the connection between the curved plate and the slow flow plate of the utility model.
[0021] Wherein: 1. Stop valve body; 101. Slow-flow pipe; 102. Mounting ring; 103. First bolt; 104. First through hole; 105. First thread groove; 106. Slow-flow ring; 107. Arc hole; 108. Fixing ring; 109. Water inlet pipe; 110. Arc plate; 111. Slow-flow plate; 112. Second through hole; 113. Spring; 114. Extrusion plate; 115. Limit rod; 116 , limiting hole; 117, baffle; 118, plug ring; 119, first sealing ring; 120, circular ring; 121, threaded hole; 122, filter ring; 123, filter screen; 124, rotating rod; 125, second sealing ring; 126, second bolt; 127, third through hole; 128, second thread groove; 2, valve seat; 3, valve disc; 4, sealing block; 5, valve stem; 6, bellows; 7, handwheel. DETAILED DESCRIPTION
[0022] The present invention will be further described below with reference to the accompanying drawings and implementation examples.
[0023] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 ,in Figure 1 This is a schematic structural diagram of the low-temperature bellows sealed stop valve provided by the utility model; Figure 2 For this utility model Figure 1 A in the middle is an enlarged schematic diagram; Figure 3 This is a three-dimensional diagram of the slow flow pipe structure of the utility model; Figure 4 This is a three-dimensional diagram of the slow-flow ring structure of the utility model; Figure 5 This is a three-dimensional diagram of the structure of the slow flow plate of the utility model; Figure 6 This is a schematic diagram of the connection between the circular ring and the filter ring of the utility model; Figure 7Schematic diagram of the connection between the arc plate and the slow flow plate of the utility model. A low-temperature bellows sealed stop valve, comprising a stop valve body 1, a valve seat 2 is fixed inside the stop valve body 1, a valve disc 3 is provided inside the stop valve body 1 and on top of the valve seat 2, a sealing block 4 is fixedly connected to the bottom end of the valve disc 3, a valve stem 5 is fixed to the top of the valve disc 3, a bellows 6 is sleeved on the outside of the valve stem 5, and the valve stem 5 extends out of the top of the stop valve body 1 and is fixedly connected to a handwheel 7; a slow flow tube 101 is provided on one side of the stop valve body 1, a mounting ring 102 is fixedly connected to the outside of the slow flow tube 101, a plurality of first bolts 103 are provided on one side of the mounting ring 102, one end of the first bolt 103 passes through a first through hole 104 provided in the mounting ring 102 and is screwed into a first thread groove 105 provided in the stop valve body 1, a slow flow ring 106 is provided inside the slow flow tube 101, and a slow flow ring 106 is provided on the slow flow ring 106 There are two arc-shaped holes 107, which are convenient for disassembly and assembly of the slow flow plate 111. The slow flow ring 106 extends out of the slow flow tube 101, and one end is fixedly connected to a fixing ring 108. One side of the fixing ring 108 is connected to a water inlet pipe 109. Several groups of arc plates 110 are fixed inside the slow flow ring 106. Several groups of arc plates 110 are grouped in pairs. A slow flow plate 111 is arranged between the two arc plates 110. A second through hole 112 is opened inside the slow flow plate 111, and a spring 113 is arranged inside the second through hole 112. Extrusion plates 114 are fixed at both ends of the spring 113. The extrusion plate 114 is fixedly connected to a limiting rod 115 on the side away from the spring 113. The limiting rod 115 extends out of the second through hole 112 and one end is inserted into the limiting hole 116 opened in the arc plate 110.
[0024] Through the above technical solution, the mounting ring 102 and the slow flow tube 101 are placed on one side of the stop valve body 1, and then one end of the first bolt 103 is passed through the first through hole 104 and screwed into the first threaded groove 105, so as to fix the mounting ring 102 and the slow flow tube 101 on one side of the stop valve body 1, and the slow flow plate 111 is inserted between the two arc plates 110, and the limiting rod 115 in the second through hole 112 is inserted into the limiting hole 116 under the elastic action of the spring 113, and the slow flow plate 111 is fixed in the middle of the arc plate 110 through the cooperation of the limiting rod 115 and the limiting hole 116. Similarly, the remaining slow flow plates 111 are inserted into the middle of the arc plate 110. The flow plate 111 is installed in the slow flow ring 106, and then the slow flow ring 106 is placed in the slow flow tube 101, so that when the medium enters the slow flow tube 101 through the water inlet pipe 109, multiple slow flow plates 111 can block and buffer the impact force of the medium, so that when the medium enters the stop valve body 1, its impact force is gradually reduced due to the influence of the slow flow plate 111, so that the impact force on the sealing block 4 at the bottom of the valve disc 3 is reduced, which plays a certain protective role on the sealing block 4, avoids damage to the sealing block 4, and thus avoids affecting the sealing performance of the stop valve body 1, so that the stop valve body 1 can be used normally.
[0025] Reference Figure 7A baffle 117 is provided inside the second through hole 112 and on the limiting rod 115. The outer side of the baffle 117 is fixedly connected to the inner wall of the second through hole 112. The baffle 117 limits the movement of the extrusion plate 114 to prevent the extrusion plate 114 from moving to the outside of the second through hole 112 due to the elastic action of the spring 113, so that the extrusion plate 114 can be used normally in the second through hole 112.
[0026] Reference Figure 1 and Figure 3 A plug ring 118 is fixedly connected to one side of the slow-flow tube 101, and a first sealing ring 119 is fixedly connected to the outside of the plug ring 118. The outside of the first sealing ring 119 abuts against the inner wall of the stop valve body 1. When the slow-flow tube 101 is installed, the plug ring 118 is inserted into the stop valve body 1. The first sealing ring 119 is used to improve the sealing performance of the connection between the plug ring 118 and the stop valve body 1 to prevent leakage of the medium.
[0027] Reference Figure 3 and Figure 6 A circular ring 120 is fixedly connected to the insert ring 118, and a threaded hole 121 is opened on the circular ring 120. A filter ring 122 is screwed into the threaded hole 121, and a filter screen 123 is fixed on the filter ring 122. A rotating rod 124 is fixedly connected to one side of the filter ring 122. The filter ring 122 is placed into the circular ring 120, and the rotating rod 124 is rotated to screw the filter ring 122 into the threaded hole 121. Impurities in the medium are filtered through the filter screen 123 in the filter ring 122 to prevent impurities in the medium from entering the interior of the stop valve body 1.
[0028] Reference Figure 1 、 Figure 2 and Figure 4 A second sealing ring 125 is fixedly connected to one side of the fixing ring 108, and several second bolts 126 are provided on one side of the fixing ring 108. One end of the second bolt 126 passes through the third through hole 127 opened in the fixing ring 108 and is screwed into the second thread groove 128 opened in the slow flow tube 101. The second bolt 126 is rotated, and the second bolt 126 can be removed from one side of the fixing ring 108 through the screw connection between the second bolt 126 and the second thread groove 128. Then the fixing ring 108 and the slow flow ring 106 can be taken out from the slow flow tube 101, so as to facilitate regular maintenance of the slow flow plate 111 in the slow flow ring 106, and thus facilitate replacement of the damaged slow flow plate 111.
[0029] The implementation principle of a low-temperature bellows-sealed stop valve according to an embodiment of the present invention is as follows: the mounting ring 102 and the slow-flow tube 101 are placed on one side of the stop valve body 1, and then one end of the first bolt 103 is passed through the first through hole 104 and screwed into the first threaded groove 105, so as to fix the mounting ring 102 and the slow-flow tube 101 on one side of the stop valve body 1, and the slow-flow plate 111 is inserted between the two arc-shaped plates 110, and the limiting rod 115 in the second through hole 112 is inserted into the limiting hole 116 under the elastic action of the spring 113, and the slow-flow plate 111 is fixed in the arc-shaped plate 110 through the cooperation of the limiting rod 115 and the limiting hole 116 Similarly, the remaining slow flow plates 111 are installed in the slow flow ring 106, and then the slow flow ring 106 is placed in the slow flow tube 101, so that when the medium enters the slow flow tube 101 through the water inlet pipe 109, the multiple slow flow plates 111 can block and buffer the impact force of the medium, so that when the medium enters the stop valve body 1, its impact force is gradually reduced due to the influence of the slow flow plates 111, so that the impact force on the sealing block 4 at the bottom of the valve disc 3 is reduced, which plays a certain protective role on the sealing block 4, avoids damage to the sealing block 4, and thus avoids affecting the sealing performance of the stop valve body 1, so that the stop valve body 1 can be used normally.
[0030] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here. The components, structures and principles known to technical personnel in this field can be known by technical personnel through technical manuals or through conventional experimental methods.
[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A low-temperature bellows-sealed stop valve, characterized by: The invention comprises a stop valve body (1), a valve seat (2) is fixed inside the stop valve body (1), a valve flap (3) is provided inside the stop valve body (1) and on the top of the valve seat (2), a sealing block (4) is fixedly connected to the bottom end of the valve flap (3), a valve stem (5) is fixed to the top end of the valve flap (3), a bellows (6) is sleeved on the outside of the valve stem (5), and a hand wheel (7) is fixedly connected to the top end of the valve stem (5) extending out of the stop valve body (1); A slow flow tube (101) is provided on one side of the stop valve body (1), and a mounting ring (102) is fixedly connected to the outside of the slow flow tube (101). A plurality of first bolts (103) are provided on one side of the mounting ring (102), and one end of the first bolt (103) passes through a first through hole (104) provided on the mounting ring (102) and is screwed into a first thread groove (105) provided on the stop valve body (1). A slow flow ring (106) is provided inside the slow flow tube (101), and two arc-shaped holes (107) are provided on the slow flow ring (106). One end of the slow flow ring (106) extending out of the slow flow tube (101) is fixedly connected to a fixing ring (108), and one side of the fixing ring (108) is connected to A water inlet pipe (109) is provided. Several groups of arc plates (110) are fixed inside the slow flow ring (106). The several groups of arc plates (110) are grouped in pairs. A slow flow plate (111) is provided between the two arc plates (110). A second through hole (112) is provided inside the slow flow plate (111). A spring (113) is provided inside the second through hole (112). Extrusion plates (114) are fixed at both ends of the spring (113). The extrusion plate (114) is fixedly connected to a limiting rod (115) on the side away from the spring (113). One end of the limiting rod (115) extends out of the second through hole (112) and is inserted into the limiting hole (116) provided in the arc plate (110).
2. A low-temperature bellows-sealed stop valve according to claim 1, characterized in that: A baffle (117) is sleeved inside the second through hole (112) and on the limiting rod (115), and the outer side of the baffle (117) is fixedly connected to the inner wall of the second through hole (112).
3. The low-temperature bellows-sealed stop valve according to claim 1, characterized in that: An insert ring (118) is fixedly connected to one side of the slow flow tube (101), a first sealing ring (119) is fixedly connected to the outside of the insert ring (118), and the outside of the first sealing ring (119) abuts against the inner wall of the stop valve body (1).
4. A low-temperature bellows-sealed stop valve according to claim 3, characterized in that: A circular ring (120) is fixedly connected inside the insert ring (118), a threaded hole (121) is provided on the circular ring (120), a filter ring (122) is screwed into the threaded hole (121), a filter screen (123) is fixed on the filter ring (122), and a rotating rod (124) is fixedly connected to one side of the filter ring (122).
5. The low-temperature bellows-sealed stop valve according to claim 1, characterized in that: A second sealing ring (125) is fixedly connected to one side of the fixing ring (108), and a plurality of second bolts (126) are provided on one side of the fixing ring (108). One end of the second bolt (126) passes through a third through hole (127) provided in the fixing ring (108) and is screwed into the inside of a second thread groove (128) provided in the slow flow pipe (101).