Corrugated pipe stop valve with high-pressure self-locking function

Abstract

The utility model relates to the technical field of stop valves, in particular to a corrugated pipe stop valve with a high-pressure self-locking function, which comprises a valve cover, a valve body is arranged at the bottom end of the valve cover, a fastening bolt penetrates into the top end of the valve cover, a communication cavity is arranged in the middle of the interior of the valve cover, and a fastening mechanism is arranged in the communication cavity. The fastening mechanism comprises sliding grooves, the two sliding grooves are correspondingly formed in the two sides of the interior of the communication cavity respectively, sealing blocks are slidably connected into the sliding grooves, connecting rods are fixed to the outer walls of the sealing blocks, and through the sliding grooves, the sealing blocks, the connecting rods and telescopic springs, the connecting rods can penetrate into the switch shell to start the coil under the high-pressure condition, so that the switch shell is closed. And in cooperation with an iron core, a permanent magnet rod, a placement groove, an abutting block and a clamping block, the high-pressure self-locking effect can be rapidly achieved, it is avoided that assemblies of the fastening mechanism affect disassembly and assembly of the valve deck and the valve body, and replacement or cleaning of internal assemblies is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of globe valves, in particular to a bellows globe valve with a high-pressure self-locking function. Background Technique

[0002] The globe valve controls the separation and combination of the valve core and the valve seat through the up-and-down movement of the valve stem, so that the on-off of the globe valve can be realized. The bellows globe valve realizes an excellent sealing effect through the characteristics of the bellows on the premise of ensuring the movement of the valve stem.

[0003] In the existing technology, during the use of the bellows globe valve, the bellows needs to be replaced after long-term use. However, the pressure inside the bellows globe valve is very high, and opening it may be dangerous. Therefore, the valve cover needs to have a high-pressure self-locking function.

[0004] The existing patent (Publication No.: CN218152525U) discloses a bellows globe valve with a high-pressure self-locking function. When the valve cover needs to be disassembled and repaired, the bolt needs to be unscrewed. At this time, if the pressure in the valve cavity is too high, the excessive pressure will push the piston to move inward, thereby squeezing the hydraulic oil in the first chamber and entering the second chamber through the pipeline, and pushing the arc block to move outward. When the arc block moves outward, the arc surface contacts the notch, thereby jamming the bolt. At this time, the bolt cannot be disassembled from the outside by tools, thus realizing the high-pressure self-locking function.

[0005] In view of the above problems, although the solution given by the existing patent can achieve the high-pressure self-locking function through the cooperation of components such as the piston, in the specific use process, the piston needs to be pushed by pressure and the cooperation of hydraulic oil is required. However, during the disassembly and maintenance process, these hydraulic oils may overflow, resulting in trouble during maintenance. Summary of the Invention

[0006] The purpose of the utility model is to provide a bellows globe valve with a high-pressure self-locking function, which can quickly achieve the high-pressure self-locking effect, avoid the components of the fastening mechanism affecting the disassembly and assembly of the valve cover and the valve body, and facilitate the replacement or cleaning of the internal components, so as to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A bellows globe valve with a high-pressure self-locking function includes a valve cover. The bottom end of the valve cover is provided with a valve body, and a fastening bolt penetrates through the top end of the valve cover. A communication cavity is opened at the middle position inside the valve cover, and a fastening mechanism is arranged inside the communication cavity.

[0008] The fastening mechanism includes sliding grooves, and the two sliding grooves are respectively formed on both sides inside the communication cavity. A sealing block is slidably connected inside the sliding groove. A connecting rod is fixed to the outer wall of the sealing block, and a telescopic spring is sleeved outside the connecting rod. One end of the connecting rod away from the sealing block penetrates into a switch housing. Coils are installed on both sides of the outer wall of the switch housing, and an iron core is installed inside the coils. A placement groove is formed inside the valve cover corresponding to the position of the coils, and a permanent magnet rod penetrates out of the placement groove.

[0009] Preferably, the sealing block forms an elastic structure with the switch housing through the telescopic spring, and the sealing block forms a sliding structure with the sliding groove.

[0010] Preferably, a contact block is fixed to the end of the permanent magnet rod passing out of the placement groove, and a clamping block is fixed to the outer wall of the contact block facing the fastening bolt.

[0011] Preferably, a positioning cavity is formed inside the valve cover corresponding to the fastening bolt, and a reset mechanism is arranged inside the positioning cavity.

[0012] Preferably, the reset mechanism includes fixing rods. The two fixing rods are fixed on both sides of the clamping block at the front end of the contact block, and one end of the fixing rod away from the contact block penetrates into a sleeve.

[0013] Preferably, the reset mechanism further includes a limit block. The limit block is fixed to the end of the fixing rod penetrating into the sleeve, and a reset spring is connected between the limit block and the sleeve.

[0014] Preferably, the sleeve forms an elastic structure with the fixing rod through the reset spring, and the fixing rod forms a sliding structure with the positioning cavity.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. Through the sliding groove, the sealing block, the connecting rod and the telescopic spring, the connecting rod can penetrate into the switch housing to start the coil under high pressure, and cooperate with the iron core, the permanent magnet rod, the placement groove, the contact block and the clamping block to quickly achieve a high-pressure self-locking effect, avoiding the components of the fastening mechanism from affecting the disassembly and assembly of the valve cover and the valve body, and facilitating the replacement or cleaning of the internal components, etc.;

[0017] 2. Through the positioning cavity, the fixing rod and the sleeve, the contact block can move stably, avoiding deviation and affecting the locking of the fastening bolt. At the same time, in cooperation with the limit block and the reset spring, the fixing rod can be reset under normal circumstances to avoid disengaging from the sleeve. Description of the Drawings

[0018] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the overall structure view of the present utility model;

[0020] Figure 2 It is the schematic structural view of the valve cover of the present utility model;

[0021] Figure 3 It is the schematic structural view of the coil of the present utility model;

[0022] Figure 4 For the present utility model's Figure 2 Enlarged view of A;

[0023] Figure 5 It is the schematic structural view of the return spring of the present utility model.

[0024] Explanation of reference numerals:

[0025] 1. Valve cover; 2. Valve body; 3. Fastening bolt; 4. Communication cavity; 5. Fastening mechanism; 501. Sliding groove; 502. Sealing block; 503. Connecting rod; 504. Telescopic spring; 505. Switch housing; 506. Coil; 507. Iron core; 508. Permanent magnet rod; 509. Placement groove; 6. Contact block; 7. Clamping block; 8. Positioning cavity; 9. Reset mechanism; 901. Fixed rod; 902. Sleeve; 903. Limiting block; 904. Return spring. Specific embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0027] The present utility model provides a technical solution:

[0028] Please refer to Figures 1 to 5A bellows stop valve with a high-pressure self-locking function comprises a valve cover 1, a valve body 2 is arranged at the bottom end of the valve cover 1, a fastening bolt 3 is inserted into the top end of the valve cover 1, a connecting cavity 4 is opened at the middle position inside the valve cover 1, and a fastening mechanism 5 is arranged inside the connecting cavity 4; the fastening mechanism 5 comprises a sliding groove 501, two sliding grooves 501 are respectively opened at two sides inside the connecting cavity 4, a sealing block 502 is slidably connected inside the sliding groove 501, a connecting rod 503 is fixed to the outer wall of the sealing block 502, a telescopic spring 504 is sleeved on the outer side of the connecting rod 503, and the connecting rod 503 is away from the sealing A switch housing 505 is passed through one end of the block 502, coils 506 are installed on both sides of the outer wall of the switch housing 505, an iron core 507 is installed inside the coil 506, a placement groove 509 is opened inside the valve cover 1 at a position corresponding to the coil 506, a permanent magnet rod 508 passes through the placement groove 509, an elastic structure is formed between the sealing block 502 and the switch housing 505 through the telescopic spring 504, a sliding structure is formed between the sealing block 502 and the sliding groove 501, a resistance block 6 is fixed to one end of the permanent magnet rod 508 passing through the placement groove 509, and a clamping block 7 is fixed to the outer wall of the resistance block 6 facing the fastening bolt 3.

[0029] By adopting the above technical solution, it is necessary to disassemble the valve cover 1 to maintain the internal components of the valve body 2. When the interior is in a high-pressure state, the pressure enters the sliding groove 501 through the connecting chamber 4, thereby pushing the sealing block 502, compressing the telescopic spring 504, and allowing the connecting rod 503 to enter the switch housing 505 to touch the coil 506 switch. The telescopic spring 504 is prevented from bending due to force through the connecting rod 503. At the same time, under normal circumstances, the sealing block 502 can be automatically reset through the telescopic spring 504. When the coil 506 is started, the iron core 507 generates magnetic force, thereby pushing the permanent magnet rod 508 to slide along the mounting groove 509, allowing the resistance block 6 to push the card block 7 to fit and compress the thread of the fastening bolt 3, thereby achieving high-pressure self-locking. At the same time, when disassembling and assembling under normal circumstances, the fastening mechanism 5 is prevented from affecting the efficiency of disassembly and assembly.

[0030] Specifically, Figure 2 and Figure 5 As shown, a positioning cavity 8 is opened inside the valve cover 1 corresponding to the fastening bolt 3, and a reset mechanism 9 is arranged inside the positioning cavity 8. The reset mechanism 9 includes a fixing rod 901, and two fixing rods 901 are fixed on both sides of the front end block 7 of the interference block 6. The end of the fixing rod 901 away from the interference block 6 is penetrated by a sleeve 902. The reset mechanism 9 also includes a limit block 903, and the limit block 903 is fixed to the end of the fixing rod 901 that is penetrated by the sleeve 902. A reset spring 904 is connected between the limit block 903 and the sleeve 902. The sleeve 902 forms an elastic structure with the fixing rod 901 through the reset spring 904, and a sliding structure is formed between the fixing rod 901 and the positioning cavity 8.

[0031] By adopting the above technical solution, by reserving the position of part of the fastening bolt 3 in the positioning cavity 8, it is convenient for the engaging block 6 and the clamping block 7 to be engaged and limited. By sliding the fixing rod 901 along the sleeve 902, the engaging block 6 is kept stable during the sliding process and avoids deviation. At the same time, under normal circumstances, the fixing rod 901 is reset by the return spring 904. At the same time, the limiting block 903 is cooperated to prevent the fixing rod 901 from being pushed excessively and disengaging from the sleeve 902.

[0032] Working principle: The upper and lower valve covers 1 of the valve body 2 are fixedly connected by the fastening bolt 3. When the air pressure inside the valve body 2 is relatively high, it enters the sliding groove 501 through the communication cavity 4 and pushes the sealing block 502, so that the connecting rod 503 is inserted into the switch housing 505 to start the coil 506. When closed, the connecting rod 503 is reset by the telescopic spring 504, and the snap ring of the connecting rod 503 is used to prevent it from disengaging from the switch housing 505. After the coil 506 is started, the iron core 507 generates a magnetic force, which pushes the permanent magnet rod 508 with the same magnetic pole to slide along the placement groove 509 and penetrate out of the positioning cavity 8, so that the engaging block 6 drives the clamping block 7 to engage with the texture of the fastening bolt 3, achieving the situation of high-pressure self-locking and facilitating disassembly and assembly. The engaging block 6 slides along the sleeve 902 through the fixing rod 901 to prevent the engaging block 6 from shifting. At the same time, in the non-self-locking state, the fixing rod 901 is elastically pushed to reset by the return spring 904, and the limiting block 903 is used to prevent it from being pushed excessively and disengaging from the sleeve 902.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bellows stop valve with a high-pressure self-locking function, comprising a valve cover (1), characterized in that: The bottom end of the valve cover (1) is provided with a valve body (2), and a fastening bolt (3) is inserted into the top end of the valve cover (1); a connecting cavity (4) is provided at the middle position inside the valve cover (1), and a fastening mechanism (5) is provided inside the connecting cavity (4); The fastening mechanism (5) comprises a sliding groove (501), wherein the two sliding grooves (501) are respectively arranged on two sides of the interior of the connecting cavity (4), and a sealing block (502) is slidably connected to the interior of the sliding groove (501), a connecting rod (503) is fixed to the outer wall of the sealing block (502), and a telescopic spring (504) is sleeved on the exterior of the connecting rod (503), a switch housing (505) is penetrated through one end of the connecting rod (503) away from the sealing block (502), a coil (506) is installed on both sides of the outer wall of the switch housing (505), and an iron core (507) is installed inside the coil (506), and a placement groove (509) is arranged inside the valve cover (1) at a position corresponding to the coil (506), and a permanent magnet rod (508) is penetrated through the interior of the placement groove (509).

2. A bellows stop valve with high pressure self-locking function according to claim 1, characterized in that: The sealing block (502) forms an elastic structure with the switch housing (505) through the telescopic spring (504), and a sliding structure is formed between the sealing block (502) and the sliding groove (501).

3. The bellows stop valve with high-pressure self-locking function according to claim 1, characterized in that: A resistance block (6) is fixed to one end of the permanent magnet rod (508) that passes through the placement groove (509), and a clamping block (7) is fixed to the outer wall of the resistance block (6) facing the fastening bolt (3).

4. The bellows stop valve with high-pressure self-locking function according to claim 1, characterized in that: The valve cover (1) is provided with a positioning cavity (8) inside corresponding to the fastening bolt (3), and a reset mechanism (9) is arranged inside the positioning cavity (8).

5. The bellows stop valve with high-pressure self-locking function according to claim 4, characterized in that: The reset mechanism (9) comprises a fixing rod (901), wherein two fixing rods (901) are fixed on both sides of a front end clamping block (7) of the abutment block (6), and a sleeve (902) is inserted into one end of the fixing rod (901) away from the abutment block (6).

6. The bellows stop valve with high-pressure self-locking function according to claim 5, characterized in that: The reset mechanism (9) further comprises a limit block (903), wherein the limit block (903) is fixed to one end of the fixed rod (901) that penetrates into the sleeve (902), and a reset spring (904) is connected between the limit block (903) and the sleeve (902).

7. The bellows stop valve with high-pressure self-locking function according to claim 6, characterized in that: The sleeve (902) forms an elastic structure with the fixing rod (901) through the return spring (904), and a sliding structure is formed between the fixing rod (901) and the positioning cavity (8).

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