Coal slurry check valve
By designing a combination of a staggered rotating valve disc, a retaining ring structure, and a buffer block, the problem of valve incomplete sealing caused by sediment during coal slurry transportation was solved, achieving unidirectional flow of coal slurry and valve durability.
Patent Information
- Application Number
- CN202422902256.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing swing check valves are prone to valve disc not sealing properly due to solid particle deposition during coal slurry transportation, affecting the sealing effect, and may cause wear of valve disc and retaining ring after long-term use.
A coal slurry check valve including a check mechanism and a buffer mechanism was designed. Through the staggered rotation design of the valve disc and the retaining ring, combined with the buffering effect of the buffer block and the spring, the deposits are prevented from caking and unidirectional flow is achieved under changes in coal slurry pressure.
It effectively prevents the backflow of coal slurry, extends the service life of valve discs and retaining rings, reduces wear, and ensures the sealing performance and flow stability of the valve.
Smart Images
Figure CN223609403U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve technical field, specifically relates to a coal slurry check valve. BACKGROUND
[0002] Coal slurry is a kind of low pollution, high efficiency, pipeline transportable oil-replacing coal-based fluid fuel obtained by physical processing of about 65% coal, 34% water and 1% additive.It changes the traditional combustion mode of coal and shows huge environmental protection and energy saving advantages.Especially in recent years, after adopting the technical route of waste resource utilization, the environmental protection coal slurry developed successfully can greatly improve the environmental protection benefit of coal slurry under the premise of not increasing cost.Under the guarantee of rich coal resources in China, coal slurry has become the most basic and economic clean energy to replace oil, gas and other energy.
[0003] Check valve needs to be used in the conveying process of coal slurry, and common check valves include lift check valve and swing check valve, etc.Due to a large amount of solid particles in coal slurry, swing check valve is usually used in pipeline, and lift check valve can cause valve blockage due to a large amount of particles deposited in coal slurry.The existing swing check valve is closed by the torsion of torsion spring, but a large amount of solid particles are clamped in the valve when the valve is closed, and deposits are formed on the closure and valve after long-term use, so that gap is generated when the valve is closed, and the closure effect is affected. SUMMARY
[0004] The summary portion of the present application is used to introduce the concept in a brief form, and the concept will be described in detail in the following detailed description portion.The summary portion of the present application is not intended to identify key or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.
[0005] In order to solve the technical problems mentioned in the background technology part, some embodiments of the present application provide a coal slurry check valve, which comprises a first pipeline, a second pipeline, a valve body fixedly arranged on the first pipeline and the second pipeline, a third pipeline fixedly arranged on the valve body, a cavity fixedly arranged in the valve body, a retaining ring fixedly arranged on the valve body, a check mechanism fixedly arranged on the valve body and a first buffer mechanism fixedly arranged on the valve body.
[0006] Specifically, the check mechanism comprises a first sliding groove fixedly arranged on the valve body in symmetry, a second sliding groove fixedly arranged on the valve body, a support slidingly arranged on the first sliding groove and the second sliding groove, a rotating shaft fixedly arranged on the support, a valve disc rotatably arranged on the rotating shaft, a first spring fixedly arranged on the support at one end and fixedly arranged on the valve disc at the other end, a second spring fixedly arranged on the valve body at one end and fixedly arranged on the support at the other end and a second buffer assembly fixedly arranged on the valve disc and the retaining ring.
[0007] Specifically, the second buffer assembly comprises a first buffer block fixed symmetrically on the valve disc, a plurality of third sliding grooves fixed on the blocking ring, a plurality of second buffer blocks slidably arranged in the third sliding grooves, a plurality of third springs with one end fixed on the second buffer blocks and the other end fixed on the blocking ring, a plurality of third buffer blocks fixed on the blocking ring, a plurality of fourth sliding grooves fixed on the valve disc, a plurality of fourth buffer blocks slidably arranged in the fourth sliding grooves, and a plurality of fourth springs with one end fixed on the fourth buffer blocks and the other end fixed on the valve disc.
[0008] Specifically, the first buffer mechanism comprises a fifth sliding groove fixed on the valve body, a fifth buffer block slidably arranged in the fifth sliding groove, and a fifth spring with one end fixed on the fifth buffer block and the other end fixed on the valve body.
[0009] Specifically, the third pipeline is fixedly provided with a top cover.
[0010] Specifically, the top cover and the third pipeline are connected through a screw and a nut.
[0011] Specifically, the valve disc is decentered after rotation.
[0012] The beneficial effects of the utility model are:
[0013] (1) When the coal slurry enters, if a certain pressure is reached, the pressure is greater than the torsion of the first spring, the valve disc is pushed open, the valve disc rotates on the rotating shaft, the coal slurry can flow out from the second pipeline through the cavity, if the coal slurry pressure is insufficient, the first spring will drive the valve disc to rotate and close, if the coal slurry flows reversely, the coal slurry flow pressure at the cavity will decrease, the valve disc will rotate slightly, if the coal slurry continues to flow reversely, the valve disc will be further rotated and contacted with the blocking ring, the coal slurry cannot enter the first pipeline from the cavity, the function of one-way flow of the coal slurry is realized, the reverse flow of the coal slurry is avoided, that is, the function of check valve is realized; the second buffer assembly plays a buffering role when the valve disc rotates and closes, prevents the rotating speed of the valve disc from being too fast to cause abrasion of the contact part of the blocking ring and the valve disc, and prolongs the service life.
[0014] (2) When the valve disc rotates, the first buffer block pushes the fourth buffer block into the fourth sliding groove, the fourth spring is compressed, the third buffer block pushes the second buffer block into the third sliding groove, the fourth spring is extruded, the third spring and the fourth spring can reduce the impact force of the valve disc on the blocking ring, play a buffering role, protect the valve disc and the blocking ring, and prolong the service life.
[0015] (3) the blocking ring is coaxial with the first pipeline, the valve disc is misaligned with the axis of the blocking ring after rotating on the rotating shaft, the axis of the valve disc is slightly higher than the axis of the blocking ring, therefore, after the valve disc is rotated by the first spring, the first buffer block contacts the fourth buffer block, the second buffer block contacts the third buffer block, but they are slightly misaligned upward and downward, because the stiffness coefficient of the first spring is large, and the edges of the first buffer block and the third buffer block are semicircular, therefore, the first buffer block and the fourth buffer block, and the second buffer block and the third buffer block will slide relative to each other, so that the valve disc moves downward, i.e. the bracket slides to the bottom of the first sliding groove and the second sliding groove, the second spring is stretched, the first buffer block pushes the fourth buffer block into the fourth sliding groove, the fourth spring is compressed, the third buffer block pushes the second buffer block into the third sliding groove, because the first buffer block and the fourth buffer block, and the second buffer block and the third buffer block will slide relative to each other, the deposits on the buffer blocks, the blocking ring and the valve disc are rubbed during the sliding, so that the deposits are loosened, when the valve disc is rotated to be opened, the first buffer block and the fourth buffer block, and the second buffer block and the third buffer block will slide in opposite directions, further rubbing the loosened deposits, so that the deposits are more easily removed, preventing the deposits from being deposited and hardened on the valve disc and the blocking ring, so that the valve disc cannot be completely closed. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the application and, together with their description, serve to explain the application.
[0017] In addition, throughout the drawings, same or similar reference numerals are used to designate same or similar elements. It should be understood that the drawings are schematic, and elements and elements are not necessarily drawn to scale.
[0018] In the drawings:
[0019] Figure 1 is a structural schematic view of the utility model;
[0020] Figure 2 is a top view of the utility model;
[0021] Figure 3 is Figure 2 a line section view of A-A in the middle;
[0022] Figure 4 is Figure 3 a line section view of B-B in the middle;
[0023] Figure 5 is Figure 3 a partial line section view of C-C in the middle;
[0024] Figure 6 is Figure 3 a partial line section view of D-D in the middle;
[0025] Figure 7 For Figure 3 Close-up view at E in the middle. DETAILED DESCRIPTION
[0026] Embodiments of the present disclosure will be described in more detail with reference to the drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.
[0027] In addition, it should be further noted that, for ease of description, only parts related to the utility model are shown in the drawings. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0028] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.
[0029] It should be noted that the adjectives "one", "multiple" mentioned in the present disclosure are illustrative and not limiting, and those skilled in the art should understand that, unless otherwise explicitly indicated in the context, it should be understood as "one or more".
[0030] The present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0031] Referring to Figures 1-7 As shown in the drawings, the utility model discloses a coal slurry check valve, including first pipeline 1, second pipeline 3, fixedly installed on the valve body 4 of first pipeline and second pipeline, fixedly installed on the third pipeline 5 of valve body, fixedly installed in the cavity 6 of valve body, fixedly installed on the blocking ring 7 of valve body, fixedly installed on the check mechanism 8 of valve body, fixedly installed on the first buffer mechanism 9 of valve body;First pipeline is inflow pipeline, and second pipeline is outflow pipeline, and coal slurry enters the valve body from first pipeline, and flows out from second pipeline after flushing check mechanism;Third pipeline is the maintenance pipeline;The blocking ring cooperates with check mechanism, realizes the function of scraping deposit and buffering;The first buffer mechanism plays a buffering role when check mechanism opens.
[0032] Specifically, the check mechanism comprises a first sliding groove 81 fixed symmetrically on the valve body, a second sliding groove 82 fixed on the valve body, a support 83 sliding on the first sliding groove and the second sliding groove, a rotating shaft 84 fixed on the support, a valve disc 85 rotating on the rotating shaft, a first spring 86 fixed symmetrically on the support and on the valve disc, a second spring 87 fixed symmetrically on the valve body and on the support, and a second buffer assembly 88 fixed on the valve disc and the blocking ring. The support can slide along the first sliding groove and the second sliding groove, i.e. the valve disc can slide up and down along the first sliding groove and the second sliding groove. The first sliding groove and the second sliding groove are short in distance, and the valve disc can only slide in a small range. The valve disc can rotate on the rotating shaft, and the maximum rotation angle is 90°. In the initial state, the valve disc is in a vertical state and in contact with the blocking ring, thereby playing a closing role. The first spring is a torsion spring, and the stiffness coefficient of the first spring is large. When the coal slurry enters, if a certain pressure is reached, the pressure is greater than the torsion of the first spring, the valve disc is pushed open, and the valve disc rotates on the rotating shaft. The coal slurry can flow out from the second pipeline through the cavity. If the pressure of the coal slurry is insufficient, the first spring will drive the valve disc to rotate and close. If the coal slurry flows in the opposite direction, the flow pressure of the coal slurry in the cavity will decrease, causing the valve disc to rotate in a small range. If the coal slurry continues to flow in the opposite direction, the valve disc will be further pushed to rotate and come into contact with the blocking ring, and the coal slurry cannot enter the first pipeline from the cavity, thereby realizing the function of one-way flow of the coal slurry and avoiding the reverse flow of the coal slurry, i.e. playing a check role. The second buffer assembly plays a buffering role when the valve disc rotates to close, preventing the rotating speed of the valve disc from being too fast to cause wear of the contact part of the blocking ring and the valve disc, thereby prolonging the service life of the valve disc.
[0033] Specifically, the second buffer assembly comprises first buffer blocks 881 fixed symmetrically on the valve disc, third sliding grooves 882 fixed on the blocking ring, second buffer blocks 883 sliding on the third sliding grooves, third springs 884 fixed on the second buffer blocks and on the blocking ring, third buffer blocks 885 fixed on the blocking ring, fourth sliding grooves 886 fixed on the valve disc, fourth buffer blocks 887 sliding on the fourth sliding grooves, and fourth springs 888 fixed on the fourth buffer blocks and on the valve disc. The first buffer blocks are arc-shaped strips with semicircular edges. The second buffer blocks can slide on the third sliding grooves. The third buffer blocks are arc-shaped strips with semicircular edges and have the same structure as the first buffer blocks. The fourth buffer blocks can slide on the fourth sliding grooves. The stiffness coefficients of the third springs and the fourth springs are small. The first buffer blocks correspond to the fourth buffer blocks after the valve disc rotates. The second buffer blocks correspond to the third buffer blocks after the valve disc rotates.
[0034] Specifically, the first buffer mechanism comprises a fifth sliding groove 91 fixed on the valve body, a fifth buffer block 92 sliding on the fifth sliding groove, and a fifth spring 93 with one end fixed on the fifth buffer block and the other end fixed on the valve body; the fifth buffer block is an arc-shaped strip with a semicircular edge, and can slide on the fifth sliding groove; the stiffness coefficient of the fifth spring is the same as that of the third spring and the fourth spring; since the stiffness coefficient of the first spring is very large, the coal slurry needs a larger pressure to push open the valve disc; when the valve disc rotates and contacts the fifth buffer block, the fifth buffer block is pushed into the fifth sliding groove; at this time, the fifth spring is compressed, and the compression of the fifth spring can reduce the impact force of the valve disc rotation on the inner wall of the valve body, reduce the wear of the valve body and the valve disc, and increase the service life of the check valve.
[0035] Specifically, the third pipeline is fixed with a top cover 51.
[0036] Specifically, the top cover is connected with the third pipeline through a screw and a nut; the top cover can be removed, which is convenient for cleaning and maintaining the check valve.
[0037] Specifically, the valve disc is decentered with the blocking ring after rotation; the blocking ring is coaxial with the first pipeline, and the axis of the valve disc is slightly higher than that of the blocking ring after the valve disc rotates on the shaft; therefore, after the valve disc is rotated by the first spring, the first buffer block contacts the fourth buffer block, and the second buffer block contacts the third buffer block, but they are slightly decentered upward and downward; since the stiffness coefficient of the first spring is very large, and the edges of the first buffer block and the third buffer block are semicircular, the first buffer block and the fourth buffer block, and the second buffer block and the third buffer block will slide with each other, so that the valve disc moves downward, i.e. the bracket slides to the bottom of the first sliding groove and the second sliding groove, the second spring is stretched, the first buffer block pushes the fourth buffer block into the fourth sliding groove, the fourth spring is compressed, the third buffer block pushes the second buffer block into the third sliding groove, and the fourth spring is squeezed; the third spring and the fourth spring can reduce the impact force of the valve disc on the blocking ring, play a buffering role, and protect the valve disc and the blocking ring; since the first buffer block and the fourth buffer block, and the second buffer block and the third buffer block will slide with each other, the deposits on the buffer blocks, the blocking ring, and the valve disc will be rubbed during the sliding, so that the deposits are loosened; when the valve disc rotates to open, the first buffer block and the fourth buffer block, and the second buffer block and the third buffer block will slide in opposite directions, further rub the loosened deposits, so that the deposits are more easily detached, and the deposits are prevented from being deposited and hardened on the valve disc and the blocking ring, so that the valve disc cannot be completely closed.
[0038] The above description is merely some of the preferred embodiments of the present disclosure and a description of the principles of the technology used. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combinations of the above technical features or equivalent features without departing from the above utility model concept. For example, the above features are replaced with each other to form a technical solution with similar functions disclosed in the embodiments of the present disclosure (but not limited to).
Claims
1. A coal slurry check valve characterized by: The utility model provides a valve, including first pipeline (1), second pipeline (3), the valve body (4) of fixedly arranged on first pipeline and second pipeline, third pipeline (5) of fixedly arranged on the valve body, the cavity (6) of fixedly arranged in the valve body, the baffle ring (7) of fixedly arranged on the valve body, check mechanism (8) of fixedly arranged on the valve body, first buffer mechanism (9) of fixedly arranged on the valve body.
2. A coal slurry check valve according to claim 1, wherein: The check mechanism includes first sliding groove (81) of symmetry fixedly arranged on the valve body, second sliding groove (82) of fixedly arranged on the valve body, support (83) of slidingly arranged on first sliding groove and second sliding groove, rotating shaft (84) of fixedly arranged on the support, valve clack (85) of rotationally arranged on the rotating shaft, first spring (86) of symmetry one end fixedly arranged on the support and the other end fixedly arranged on the valve clack, second spring (87) of symmetry one end fixedly arranged on the valve body and the other end fixedly arranged on the support, second buffer assembly (88) of fixedly arranged on the valve clack and the baffle ring.
3. A coal water slurry check valve according to claim 2, wherein: The second buffer assembly includes first buffer block (881) of symmetry fixedly arranged on the valve clack, third sliding groove (882) of fixedly arranged on the baffle ring, second buffer block (883) of slidingly arranged on the third sliding groove, third spring (884) of one end fixedly arranged on the second buffer block and the other end fixedly arranged on the baffle ring, third buffer block (885) of fixedly arranged on the baffle ring, fourth sliding groove (886) of fixedly arranged on the valve clack, fourth buffer block (887) of slidingly arranged on the fourth sliding groove, fourth spring (888) of one end fixedly arranged on the fourth buffer block and the other end fixedly arranged on the valve clack.
4. A coal water slurry check valve according to claim 1 wherein: The first buffer mechanism includes fifth sliding groove (91) of fixedly arranged on the valve body, fifth buffer block (92) of slidingly arranged on the fifth sliding groove, fifth spring (93) of one end fixedly arranged on the fifth buffer block and the other end fixedly arranged on the valve body.
5. A coal water slurry check valve according to claim 1 wherein: The third pipeline is fixedly provided with a top cover (51).
6. A coal water suspension check valve according to claim 5 wherein: The top cover is connected with the third pipeline through screw and nut.
7. A coal water slurry check valve according to claim 2 wherein: The valve clack is different from the baffle ring after rotating.