An easy-to-replace stop valve

Abstract

The utility model discloses an easily replaceable stop valve, wherein an inner valve body is nested in an outer valve body, the inner valve body is connected to a valve cover, the valve cover is connected to the outer valve body through a valve body bolt, the outer valve body has an installation groove, a slide groove is arranged in the installation groove, a slide bar is installed in the installation groove, the slide bar is connected to a slider, the slider and the slide groove are connected through a spring, the inner valve body also has a recessed groove, the valve body bolt has a protrusion, and the slide bar is provided with a recessed portion; the valve body bolt fixes the outer valve body and the inner valve body, the protrusion is engaged with the recessed portion, and the recessed groove is engaged with the slide bar; when the valve body bolt is taken out, the slider is pulled by the spring, driving one end of the slide bar to slide out of the installation groove. The beneficial effects of the utility model are that the stop valve is easily cleaned and replaced, and the internal problems of the valve are easily found out.

Description

Technical Field

[0001] The utility model relates to a valve, more specifically to an easily replaceable stop valve. Background Art

[0002] Generally, the stop valve is installed as an integrated unit. After a certain number of years of use, the valve body becomes old and too many impurities accumulate inside, affecting normal use. For example, the Chinese utility model patent with application number 201520324559.X, entitled "A detachable valve with built-in filter", has the feature of a built-in filter, but it is installed in an integrated unit, and simple filtration cannot completely replace and clean the inside of the valve body. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide an easily replaceable stop valve, which is characterized in that it comprises: an inner valve body, an outer valve body, a valve disc, a valve cover, a valve stem, a handwheel, a valve body bolt, a mounting groove, a slide groove, a slide bar, a slider, and a spring. The outer valve body has an inlet pipe and an outflow pipe, the inner valve body is nested in the outer valve body, one end of the valve stem passes through the valve cover and is connected to the handwheel, the other end of the valve stem extends into the inner valve body and is connected to the valve disc. The inner valve body is connected to the valve cover, and the inner valve body has an inlet and an outlet, the inlet is connected to the inlet pipe, and the outlet is connected to The outflow pipe is connected, the inner valve body has a through hole, the hand wheel is turned to drive the valve stem to descend, the valve flap contacts the through hole and blocks the through hole, so that the fluid cannot pass through, when the valve stem rises, the valve flap leaves the through hole, the fluid flows from the inflow pipe through the inlet, the through hole, the outflow pipe, the installation groove is set on the outer valve body, the slide bar is installed in the installation groove, the slide bar is connected to the slider, the slider and the slide groove are connected by the spring, the inner valve body is also provided with a recessed groove, the valve body bolt has a protrusion, and the slide bar is provided with a recessed portion;

[0004] When the valve body bolts fix the outer valve body and the inner valve body, the protrusion is engaged with the recessed portion, and the recessed groove is engaged with the slide bar; and the slot diameter of the mounting slot accommodates the passage of the slider and the slide bar. After the slider and the slide bar are installed, the slot is sealed with a cover, and the cover has a cover thread, and the outer valve body has an internal thread at the position of the mounting slot, and the internal thread is for the cover thread to be screwed into, and the cover is fixed to the outer valve body through the cover thread, and the outer valve body has a sliding hole for the slide bar to pass through.

[0005] As a further improvement of the utility model,

[0006] The outlet is provided with a slot, and a filter is fixed on the slot.

[0007] As a further improvement of the utility model,

[0008] The valve cover and the outer valve body are provided with a threaded hole through which the valve body bolt passes, and the valve cover and the outer valve body are connected.

[0009] As a further improvement of the utility model,

[0010] The lower end of the inner valve body is provided with a groove, and the inlet is provided with a convex block.

[0011] As a further improvement of the utility model,

[0012] A sealing rubber ring is provided between the inner and outer valve bodies.

[0013] As a further improvement of the utility model,

[0014] The valve cover is provided with a cover threaded hole, the valve stem is provided with threads, and the valve cover and the valve stem are screwed and connected through the cover threaded hole and the threads.

[0015] As a further improvement of the utility model,

[0016] The handwheel and the valve stem are connected by a handwheel bolt.

[0017] As a further improvement of the utility model,

[0018] A leakproof cover is provided at the connection between the valve cover and the outer valve body, and the leakproof cover comprises: a supporting membrane and a leakproof membrane, the supporting membrane has two openings, the openings are hermetically connected to the valve cover and the outer valve body and the openings, and the supporting membrane and the leakproof membrane together form a closed cavity.

[0019] As a further improvement of the utility model,

[0020] The anti-leakage film is a transparent film.

[0021] As a further improvement of the utility model,

[0022] The protruding portion is a cone, and the recessed portion is an inverted cone.

[0023] The beneficial effects of the utility model are:

[0024] Since the general valve body is divided into an inner valve body and an outer valve body, the inner and outer valve bodies are nested and then installed in line with the pipeline. After the installation is completed, the hand wheel is turned to raise the valve stem, driving the valve disc to disengage from the through hole, so that the fluid flows from the inlet, through hole, outlet and outflow pipe from the inlet pipe. Since even the inner valve body can be detached from the outer valve body, when the inner valve body is accumulated with impurities or fails, most of the silt removal, rust removal and troubleshooting work can be completed by simply disassembling the inner valve body.

[0025] During installation, connect the nested inner valve body and outer valve body to the pipeline, turn the handwheel to drive the valve stem, and disengage the valve disc or block the through hole. Since the inlet is connected to the inlet pipe and the outlet is connected to the outlet pipe, the cooperation of the inner and outer valve bodies allows the valve body to perform cut-off or flow operations. When a fault occurs or there is foreign matter in the valve body, the valve body bolts are removed to separate the inner and outer valve bodies. After removing the inner valve body, the parts can be checked one by one to achieve replacement of specific parts.

[0026] When the valve body bolts fix the inner valve body and the outer valve body, the protruding part of the valve body bolts and the recessed part on the slide installed in the installation groove are interlocked, and at the same time, the slide is interlocked with the recessed groove, which shortens the length of the spring between the slider and the slide groove, so that the spring is in a compressed state. Due to the interlocking of the two, the limit between the inner valve body and the outer valve body is more secure.

[0027] When the valve body bolts are taken out, the protrusions break away from the recessed parts on the slide bar, causing the spring to reset, driving one end of the slide bar to protrude out of the recessed groove, while the other end protrudes out of the mounting groove on the outer valve body, releasing the two-way engagement and making it easier to remove the inner valve body.

[0028] Moreover, after dredging, troubleshooting, and replacing parts, when reinstalling the inner valve body into the outer valve body, check whether the slide bar is immersed in the installation groove to know whether the installation is tight. If the slide bar is completely immersed in the installation groove, it means that the slide bar and the recessed groove are tightly fitted, and the protruding part and the recessed part are tightly fitted. If the slide bar protrudes, the fit is incomplete and further adjustment or inspection is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 For the overall picture;

[0030] Figure 2 It is a schematic diagram of the internal structure;

[0031] Figure 3 It is a schematic diagram of the inner valve body;

[0032] Figure 4 This is the overall picture of the leakproof cover;

[0033] Figure 5 This is a partial enlarged view of the concave groove;

[0034] 1. Inner valve body; 2. Outer valve body; 3. Valve disc; 4. Valve cover; 5. Valve stem; 6. Hand wheel; 7. Valve body bolt; 8. Mounting groove; 9. Slide groove; 10. Slide bar; 11. Slider; 12. Spring; 13. Inflow pipe; 14. Outflow pipe; 15. Inflow port; 16. Outflow port; 17. Through hole; 18. Recessed groove; 19. Protrusion; 20. Recessed portion; 21. Slot; 22. Filter screen; 23. Groove; 24. Bump; 25. Sealing rubber ring; 26. Thread; 27. Hand wheel bolt; 28. Leakproof cover; 29. ​​Support membrane; 30. Leakproof membrane; 31. Opening; 32. Threaded hole; 33. Cover; 34. Cover thread; 35. Internal thread; 36. Slide hole; 37. Cover thread hole; DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0036] Reference Figure 1 , 2 , 3, 4, 5 as shown:

[0037] A kind of easily replaceable stop valve, characterized in that it comprises: an inner valve body 1, an outer valve body 2, a valve disc 3, a valve cover 4, a valve stem 5, a handwheel 6, a valve body bolt 7, a mounting groove 8, a slide groove 9, a slide bar 10, a slider 11, and a spring 12. The outer valve body 2 has an inlet pipe 13 and an outlet pipe 14. The inner valve body 1 is nested in the outer valve body 2. The inner valve body 1 is connected to the valve cover 4. The valve body bolt 7 fixes the valve cover 4 to the outer valve body 2. The valve cover 4 is connected to the valve stem 5. One end of the valve stem 5 extends into the inner valve body 1 to connect the valve disc 3. The other end of the valve stem 5 is connected to the handwheel 6. The inner valve body 1 has an inlet 15 and an outlet 16. The inlet 15 is connected to the inlet pipe 13, and the outlet 16 is connected to the outlet The inner valve body 1 is connected to the outer valve body 2, and the inner valve body 1 has a through hole 17. The hand wheel 6 is turned to drive the valve stem 5 to descend, and the valve flap 3 contacts the through hole 17 to block the through hole 17, so that the fluid cannot pass through. When the valve stem 5 is raised, the valve flap 3 leaves the through hole 17, and the fluid flows from the inlet pipe 13 through the inlet 15, the through hole 17, the outlet 16, and the outflow pipe 14 in sequence. The mounting groove 8 is provided on the outer valve body 2, and the slide bar 10 is installed in the mounting groove 8. The slide bar 10 is connected to the slider 11, and the slider 11 is connected to the slide groove 9 through the spring 12. The inner valve body 1 also has a recessed groove 18, and the valve body bolt 7 has a protrusion 19, and a recessed portion 20 is provided on the slide bar 10;

[0038] When the valve body bolt 7 fixes the outer valve body 2 and the inner valve body 1, the protrusion 19 is engaged with the recessed portion 20, and the recessed groove 18 is engaged with the slide bar 10;

[0039] When the valve body bolt 7 is removed, the slider 11 is pulled by the spring 12 to drive one end of the slide bar 10 to pop out of the installation groove 8 .

[0040] The diameter of the slot of the mounting groove 8 is sufficient to accommodate the slider 11 and the slide bar 10. After the slider 11 and the slide bar 10 are installed, the slot is sealed with a cover 33. The cover 33 has a cover thread 34, and the outer valve body 2 has an internal thread 35 at the position of the mounting groove 8. The internal thread 35 is for the cover thread 34 to be screwed into. The cover 33 is fixed to the outer valve body 2 through the cover thread 34, and the cover 33 has a sliding hole 36 for the slide bar 10 to pass through.

[0041] Through the above technical scheme, during installation, the nested inner valve body 1 and the outer valve body 2 are connected to the pipeline, and the hand wheel 6 is turned to drive the valve stem 5 to disengage the valve flap 3 or block the through hole 17. Since the inlet 15 is connected to the inlet pipe 13 and the outlet 16 is connected to the outlet pipe 14, the valve body is cut off or circulated with the cooperation of the inner and outer valve bodies 2. When a fault occurs or there is foreign matter in the valve body, the valve body bolts 7 are removed to separate the inner valve body 1 from the outer valve body 2. After the inner valve body 1 is removed, the parts can be checked one by one to achieve replacement of specific parts.

[0042] When the valve body bolt 7 fixes the inner valve body 1 and the outer valve body 2, the protrusion 19 of the valve body bolt 7 and the recessed portion 20 on the slide bar 10 installed in the installation groove 8 are interlocked, and at the same time the slide bar 10 is interlocked with the recessed groove 18, which shortens the length of the spring 12 between the slider 11 and the slide groove 9, so that the spring 12 is in a compressed state. Due to the interlocking of the two, the limit between the inner valve body 1 and the outer valve body 2 is more secure.

[0043] When the valve body bolt 7 is taken out, the protrusion 19 disengages from the recessed portion 20 on the slide bar 10, causing the spring 12 to reset, driving one end of the slide bar 10 to disengage from the recessed groove 18, while the other end protrudes from the mounting groove 8 on the outer valve body 2, releasing the two-to-two engagement and making it easier to remove the inner valve body 1.

[0044] Moreover, after silting, troubleshooting, and replacement of parts, when the inner valve body 1 is reinstalled into the outer valve body 2, checking whether the slide bar 10 is immersed in the installation groove 8 can tell whether the installation is tight. If the slide bar 10 is completely immersed in the installation groove 8, it means that the slide bar 10 is tightly fitted with the recessed groove 18, and the protruding part 19 is tightly fitted with the recessed part 20. If the slide bar 10 protrudes, the fit is incomplete and further adjustment or inspection is required.

[0045] The cover 34 is used to cover and press the slide bar 10 and the slider 11 so that they can be easily installed in the installation groove 8. When the slide bar 10 is loosened or removed, it is pulled by the spring 12, and one end protrudes from the slide hole 36, which is easy to observe.

[0046] As an improved specific implementation, the outflow port 16 is provided with a slot 21 , and a filter screen 22 is fixed on the slot 21 .

[0047] Through the above technical solution, a card groove 21 is set at the outflow port 16 so that the filter screen 22 can be easily fixed to the outflow port 16 of the inner valve body 1. When the liquid flows through, impurities will be trapped in the inner valve body 1. Combined with the characteristic of easy disassembly of the inner valve body 1, the impurities accumulated in the inner valve body 1 can be cleaned more conveniently.

[0048] As an improved specific implementation, the valve cover 4 and the outer valve body 2 have a communicating threaded hole 32 , and the valve body bolt 7 passes through the threaded hole 32 to connect the valve cover 4 and the outer valve body 2 .

[0049] Through the above technical solution, the valve body bolt 7 passes through the threaded hole 32 , and the valve cover 4 and the outer valve body 2 are tightly connected by the valve body bolt 7 .

[0050] As an improved specific embodiment, the outer valve body 2 has a plurality of inlet pipes 13, the inner valve body 1 has a plurality of inlet ports 15, the inlet ports 15 are connected to the inlet pipes 13 accordingly, the outer valve body 2 has a plurality of outflow pipes 14, the inner valve body 1 has a plurality of outlet ports 16, the outlet ports 16 are connected to the outflow pipes 14 accordingly.

[0051] Through the above technical solution, due to the pipeline design, multiple pipelines are connected to the valve body, and multiple pipelines are limited by one valve body, so that multiple pipeline situations can be centrally managed more conveniently.

[0052] As an improved specific implementation, the lower end of the inner valve body 1 has a groove 23 , and the inlet 15 has a protrusion 24 .

[0053] Through the above technical solution, when a groove 23 is provided at the lower end of the inner valve body 1, impurities passing through can be concentrated in the groove 23, and the protrusion 24 designed at the lower end makes the non-liquid debris further retained in the groove 23. Combined with the above-mentioned disassembly convenience, dredging can be more convenient.

[0054] As an improved specific implementation, a sealing rubber ring 25 is provided between the inner and outer valve bodies 2 .

[0055] Through the above technical solution, due to the design of the inner and outer valve bodies 2, a sealing rubber ring 25 is set between the inner and outer valve bodies 2, which can improve the sealing performance of the valve body. Even if the valve body is disassembled and installed many times, it will not affect the sealing performance of the valve body, thereby ensuring the sealing performance after multiple replacements.

[0056] As an improved specific implementation, a thread 26 is provided between the valve cover 4 and the valve stem 5 for connection.

[0057] Through the above technical solution, since the connection method adopts the thread 26 connection, and the thread 26 is convenient and quick to set, the cost of manufacturing the valve cover 4 and the valve stem 5 can be effectively reduced.

[0058] As an improved specific implementation, the handwheel 6 and the valve stem 5 are connected by handwheel 6 bolts.

[0059] Through the above technical solution, the bolt connection cost is relatively low, and the bolt fixing of the hand wheel 6 to the valve stem 5 can effectively reduce the manufacturing cost of the valve.

[0060] As an improved specific embodiment, a leakproof cover 28 is provided at the connection between the valve cover 4 and the outer valve body 2, and the leakproof cover 28 has: a support membrane 29 and a leakproof membrane 30, and the support membrane 29 has two openings 31, and the openings 31 are tightly connected to the valve cover 4 and the outer valve body 2 and the openings 31, and the support membrane 29 and the leakproof membrane 30 are enclosed to form a closed cavity.

[0061] Through the above technical solution, the support membrane 29 has an opening 31 through which the valve body passes, and the support extends to form a leak-proof cover 28. The leak-proof cover 28 wraps the connection between the valve body. The support membrane 29 and the leak-proof membrane 30 are combined to form a closed cavity. There is a risk of leakage between the inner and outer valve bodies 2, and the leak-proof cover 28 is used to cover the connection between the two valve bodies, so that even if a leakage occurs, the leakage can be generated in the membrane, and the liquefied or gasified leaked material cannot escape from the valve, thereby ensuring the safety of the operation.

[0062] As an improved specific implementation, the anti-leakage film 30 is a transparent film.

[0063] Through the above technical solution, since the anti-leakage film 30 is transparent, it is possible to observe whether there is liquid seepage inside, which is more convenient for early warning and further improves safety.

[0064] As an improved specific implementation, the protrusion 19 is a cone, and the recessed portion 20 is an inverted cone.

[0065] Through the above technical solution, the protrusion 19 adopts a cone and the recessed portion 20 is an inverted cone, which is more convenient, quick and effective in reducing costs during processing. By adopting a cone, the inverted cone of the recessed portion 20 can be cut into more smoothly when the valve body bolt 7 is screwed and fixed, and the situation where various fasteners cannot be fixed at all due to a slight deviation caused by wear due to long-term use will not occur.

[0066] In summary,

[0067] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An easily replaceable stop valve, characterized in that include: An inner valve body (1), an outer valve body (2), a valve disc (3), a valve cover (4), a valve stem (5), a hand wheel (6), a mounting groove (8), a slide groove (9), a slide bar (10), a slider (11), a spring (12), and a valve body bolt (7); the inner valve body (1) is nested in the outer valve body (2); the inner valve body (1) is connected to the valve cover (4); the valve cover (4) is connected to the outer valve body (2) via the valve body bolt (7); one end of the valve stem (5) passes through the valve cover (4) and is connected to the outer valve body (2); The valve stem (5) is connected to the hand wheel (6), the other end of the valve stem (5) extends into the inner valve body (1) to connect with the valve flap (3), the mounting groove (8) is arranged on the outer valve body (2), a slide groove (9) is arranged in the mounting groove (8), the slide bar (10) is installed in the mounting groove (8), the slide bar (10) is connected to the slider (11), the slider (11) and the slide groove (9) are connected by the spring (12), the inner valve body (1) also has a recessed groove (18), the The valve body bolt (7) has a protrusion (19), and the slide bar (10) is provided with a recessed portion (20); when the valve body bolt (7) fixes the outer valve body (2) and the inner valve body (1), the protrusion (19) and the recessed portion (20) are engaged, and the recessed groove (18) and the slide bar (10) are engaged; when the valve body bolt (7) is removed, the slider (11) is pulled by the spring (12), driving one end of the slide bar (10) to slide out of the installation groove (8), and also The valve body (1) has an inlet (15) and an outlet (16), wherein the inlet (16) is provided with a slot (21), a filter screen (22) is fixed on the slot (21), the valve cover (4) and the outer valve body (2) have a threaded hole (32) for connection, the valve body bolt (7) passes through the threaded hole (32) to connect the valve cover (4) and the outer valve body (2), the lower end of the inner valve body (1) has a groove (23), and the inlet (15) has a protrusion (24).

2. The easily replaceable stop valve according to claim 1, characterized in that: A sealing rubber ring (25) is provided between the inner valve body (1) and the outer valve body (2).

3. The easily replaceable stop valve according to claim 2, characterized in that: The valve cover (4) is provided with a cover threaded hole (37), and the valve stem (5) is provided with a thread (26). The valve cover (4) and the valve stem (5) are screwed together through the matching of the cover threaded hole (37) and the thread (26).

4. The easily replaceable stop valve according to claim 3, characterized in that: The hand wheel (6) and the valve stem (5) are connected by a hand wheel (6) bolt.

5. The easily replaceable stop valve according to claim 4, characterized in that: A leakproof cover (28) is provided at the connection between the valve cover (4) and the outer valve body (2), and the leakproof cover (28) comprises: a supporting membrane (29) and a leakproof membrane (30), and the supporting membrane (29) has two openings (31), and the openings (31) are tightly connected to the valve cover (4) and the outer valve body (2) and the openings (31), and the supporting membrane (29) and the leakproof membrane (30) together form a closed cavity.

6. The easily replaceable stop valve according to claim 5, characterized in that: The anti-leakage film (30) is a transparent film.

7. The easily replaceable stop valve according to claim 6, characterized in that: The protrusion (19) is a cone, and the recess (20) is an inverted cone.

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