Inlet and outlet sliding plate valve of chilling water pump

Abstract

The utility model relates to the field of control valves, and discloses a chilling water pump inlet and outlet sliding plate valve which comprises a valve body, an outer hexagonal plug is in threaded connection with the interior of the valve body, a valve rod is arranged in the valve body, a sliding sleeve is fixedly connected to the side wall of the valve rod, a valve plate is fixedly connected to the side wall of the sliding sleeve, and a cleaning assembly is arranged in the valve body. An upper valve seat is fixedly connected to the side wall of the valve body, a lower valve seat is fixedly connected to the side wall of the valve body, a sealing ring is arranged in the valve body, and the side wall of the sealing ring is fixedly connected between the upper valve seat and the lower valve seat. Attachments generated when the valve plate is opened and closed are scraped through a scraper structure in the valve seat, sealing and dust prevention of the spring cavity are achieved by adding an O-shaped pattern in a spring framework, the lower valve cover at the bottom of the valve body is convenient to maintain, a furnace can be directly opened for overhauling, manual cleaning can be achieved, and an outer hexagonal plug is opened in the operation process and high-pressure clear water is used for online cleaning. And the middle cavity is kept clean.

Description

TECHNICAL FIELD

[0001] The utility model relates to control valve field especially, it relates to a kind of quenching water pump import and export sliding plate valve. BACKGROUND

[0002] In numerous industrial fields such as chemical industry, energy, quenching water pump import and export sliding plate valve plays a very key role.Taking coal gasification process as an example, quenching water pump is responsible for delivering quenching water to gasifier and other key equipment, cooling high-temperature synthesis gas, preventing ash slag from being deposited on the surface of equipment, so as to ensure the stable operation of the entire gasification process.In this complex and harsh process, quenching water pump import and export sliding plate valve needs to accurately control the flow and flow direction of quenching water, and the performance thereof is directly related to the safety, stability and production efficiency of the entire production system.

[0003] Traditional quenching water pump import and export valve usually adopts relatively simple gate valve or stop valve structure.Taking gate valve as an example, it is mainly composed of valve body, gate, valve stem, valve seat and sealing packing and other components.In working principle, the gate is moved up and down in the valve body by the lifting movement of the valve stem, so as to realize the opening and closing of the valve, to control the on-off of fluid.The valve seat and the gate are sealed by metal sealing surface or soft sealing material, and when the gate is lowered and tightly combined with the valve seat, the fluid is prevented from passing through.

[0004] However, due to the direct contact of the valve stem with the medium in the valve body cavity, impurities and precipitates in the medium are easily attached and accumulated on the surface of the valve stem during long-term use, especially when the medium is in a stationary state or undergoes temperature changes.These attachments will gradually change the surface roughness of the valve stem, increase the friction between the valve stem and the packing, and then cause the valve stem to appear jamming phenomenon during opening and closing operation, which seriously affects the operation flexibility and response speed of the valve, and therefore a kind of quenching water pump import and export sliding plate valve is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a kind of quenching water pump import and export sliding plate valve, to improve the problem of valve plate attachment affecting sealing and opening and closing in prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a kind of quenching water pump import and export sliding plate valve, including valve body, the valve body inside screw connection has outer hexagon plug, the valve body inside is provided with valve rod, the valve rod side wall is fixedly connected with sliding sleeve, the sliding sleeve side wall is fixedly connected with valve plate, the valve body inside is provided with cleaning assembly, the valve body side wall is fixedly connected with upper valve seat, the valve body side wall is fixedly connected with lower valve seat, the valve body inside is provided with sealing ring, the sealing ring side wall is fixedly connected between the upper valve seat and the lower valve seat, the valve body inside is provided with sealing assembly;

[0008] Cleaning assembly includes spring skeleton, the spring skeleton side wall is fixedly connected in the valve body, the spring skeleton side wall is fixedly connected with column spring outer diameter ring, the column spring outer diameter ring side wall is fixedly connected with O type figure, the valve body inside is provided with O type ring outer diameter, the valve body inside screw connection has cylinder head screw, the valve body inside is provided with lower valve cover, the lower valve cover side wall is fixedly connected with sealing pad;

[0009] As further description of the above technical solutions:

[0010] The sealing assembly includes wear pad, and the wear pad side wall is fixedly connected in the valve body;

[0011] As further description of the above technical solutions:

[0012] The wear pad side wall is fixedly connected with packing pad, and the packing pad side wall is fixedly connected with packing body;

[0013] As further description of the above technical solutions:

[0014] The packing body side wall is fixedly connected with pressure roll, the pressure roll side wall is fixedly connected with pressure cover, and disc spring is arranged between the pressure roll and the pressure cover;

[0015] As further description of the above technical solutions:

[0016] The valve body side wall is fixedly connected with valve cover body, the valve cover body inside screw connection has full silk screw three, the full silk screw three side wall screw connection has outer hexagon nut, and the valve cover body inside is provided with metal winding pad two;

[0017] As further description of the above technical solutions:

[0018] The valve body inside screw connection has full silk screw one, and the full silk screw one side wall screw connection has hexagonal nut one;

[0019] As further description of the above technical solutions:

[0020] The valve body is internally screwed with a full-wire screw rod two, the side wall of the full-wire screw rod two is screwed with an elastic pad, and the side wall of the full-wire screw rod two is screwed with a hexagonal nut two;

[0021] As a further description of the above technical solutions:

[0022] The inner hexagon is internally screwed in the sliding sleeve, the metal winding pad one is arranged in the valve body, the guide pin is arranged in the valve body, and the actuating mechanism is arranged in the valve body.

[0023] The utility model has the following beneficial effects:

[0024] 1. In the utility model, the scraper structure in the valve seat is used to scrape off the adhering matter when the valve plate is opened and closed, so that the valve seat is kept clean, the spring cavity is sealed and dustproof by adding O-shaped diagram in the spring framework, the black water medium is prevented from entering to prevent scale formation, the lower valve cover at the bottom of the valve body is convenient for maintenance, the manual cleaning can be directly opened during shutdown maintenance, the outer hexagonal plug is opened during operation to realize online cleaning by using high-pressure water, the middle cavity is kept clean, the problem of affecting sealing and opening and closing due to the adhering matter of the valve plate is solved, and the reliability and high efficiency of the valve during long-term operation are ensured through the above technical solutions.

[0025] 2. In the utility model, the wear-resistant pad is tightly fixed with the valve body, the fluid pressure and the valve rod movement friction are borne, the filler body is low-density flexible graphite, and the filler pad block is high-density graphite, the two are compressed and extruded due to the angle difference formed in design, the gap between the valve rod and the valve body can be filled, the filler body is pressed by the compression and cover, the filler body is attached to the valve rod, the disc spring provides stable pre-tightening force, the sealing force change caused by temperature, wear and the like is compensated, the problems of poor sealing, leakage between the valve rod and the valve body, influence on normal use of the valve and overall operation stability are solved, and the valve stably and safely plays the fluid control function through the above technical solutions. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A valve internal structure schematic view of a quenching water pump inlet and outlet sliding plate valve is provided in the utility model;

[0027] Figure 2 A Figure 1 An enlarged view of A in the middle;

[0028] Figure 3 A Figure 1 An enlarged view of B in the middle;

[0029] Figure 4 A valve sectional view of a quenching water pump inlet and outlet sliding plate valve is provided in the utility model.

[0030] LEGEND:

[0031] 1, valve body; 2, hexagonal plug; 3, valve plate; 4, O-shaped diagram; 5, cylindrical spring outer diameter ring; 6, spring skeleton; 7, valve seat sealing ring; 8, upper valve seat; 9, lower valve seat; 10, O-shaped ring outer diameter; 11, inner hexagonal; 12, metal winding pad one; 13, guide pin; 14, sliding sleeve; 15, valve stem; 16, valve cover body; 17, hexagonal nut one; 18, full wire screw one; 19, hexagonal nut two; 20, full wire screw two; 21, elastic pad; 22, actuator; 23, gland; 24, pressure coil; 25, packing body; 26, packing pad; 27, wear-resistant pad; 28, outer hexagonal nut; 29, full wire screw three; 30, metal winding pad two; 31, cylindrical head screw; 32, sealing pad; 33, lower valve cover. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] With reference to Figure 1 , Figure 2 and Figure 3 , the present application provides an embodiment: a quenching water pump inlet and outlet sliding plate valve, comprising a valve body 1, a hexagonal plug 2 is threadedly connected in the valve body 1, a valve stem 15 is arranged in the valve body 1, a sliding sleeve 14 is fixedly connected to the side wall of the valve stem 15, a valve plate 3 is fixedly connected to the side wall of the sliding sleeve 14, a cleaning assembly is arranged in the valve body 1, an upper valve seat 8 is fixedly connected to the side wall of the valve body 1, a lower valve seat 9 is fixedly connected to the side wall of the valve body 1, a sealing ring 7 is arranged in the valve body 1, the side wall of the sealing ring 7 is fixedly connected between the upper valve seat 8 and the lower valve seat 9, and a sealing assembly is arranged in the valve body 1; the cleaning assembly comprises a spring skeleton 6, the side wall of the spring skeleton 6 is fixedly connected in the valve body 1, a cylindrical spring outer diameter ring 5 is fixedly connected to the side wall of the spring skeleton 6, an O-shaped Figure 4 , O-shaped Figure 4For preventing black water medium into spring cavity, O-ring outer diameter 10 is arranged in the valve body 1, cylindrical head screw 31 is threadedly connected in the valve body 1, lower valve cover 33 is arranged in the valve body 1, sealing gasket 32 is fixedly connected to the side wall of lower valve cover 33, valve cover body 16 is fixedly connected to the side wall of valve body 1, full wire screw three 29 is threadedly connected in valve cover body 16, outer hexagonal nut 28 is threadedly connected to the side wall of full wire screw three 29, metal winding gasket two 30 is arranged in valve cover body 16, full wire screw one 18 is threadedly connected in valve body 1, hexagonal nut one 17 is threadedly connected to the side wall of full wire screw one 18, full wire screw two 20 is threadedly connected in valve body 1, elastic pad 21 is threadedly connected to the side wall of full wire screw two 20, hexagonal nut two 19 is threadedly connected to the side wall of full wire screw two 20, inner hexagon 11 is threadedly connected in sliding sleeve 14, metal winding gasket one 12 is arranged in valve body 1, guide pin 13 is arranged in valve body 1, and actuator 22 is arranged in valve body 1;

[0034] In the aspect of cleaning and maintaining the valve body 1, the valve seat is designed with a scraper structure having specific shape and material properties. The material has good wear resistance and toughness, and can maintain the sharpness of the blade edge during long-term frequent use. When the valve plate 3 is opened and closed in the valve body 1, the scraper structure can accurately contact the surface of the valve plate 3, and can scrape off mineral deposits, impurity particles and other sticky attachments that may be attached to the valve plate 3. This scraping action is extremely critical because once the attachments accumulate on the valve plate 3, they will change the surface flatness and smoothness of the valve plate 3, thereby affecting the close fitting between the valve plate 3 and the valve seat, reducing the sealing performance, and also increasing the friction of the valve plate 3 during opening and closing, causing the opening and closing operation to be jammed, not smooth, or even malfunction. Through the effective operation of the scraper structure, the valve plate 3 is always kept clean, effectively avoiding the occurrence of the above problems, and ensuring the sealing performance of the valve plate 3 and the precision and smoothness of the opening and closing operation. The spring cavity in the valve seat is added with an O-shaped Figure 4 ring in the spring frame 6, which is made of rubber material with good elasticity and sealing performance. Its unique annular structure can tightly fit in the corresponding position inside the spring frame 6. During normal operation, the O-shaped Figure 4 ring is extruded by the spring frame 6 and limited by the surrounding parts, forming a reliable sealing line to effectively prevent black water medium from entering the spring cavity. Black water medium often contains a large amount of mineral matter, corrosive ions and small particle impurities. If they enter the spring cavity, these substances will gradually deposit on the surface of the spring and the inner wall of the cavity, forming scale. Scale will cause the spring to lose its elasticity and fail to normally support and reset the valve plate 3, and will also affect the movement flexibility of other parts in the spring cavity, ultimately damaging the sealing performance of the entire valve and the smoothness of the valve plate 3 opening and closing. Figure 4 Figure 4 ​The sealing and dustproof function of the sealing assembly successfully prevents the occurrence of fouling phenomenon, thereby ensuring the stability of the sealing performance and the smoothness of the valve plate 3 opening and closing. The lower valve cover 33 at the bottom of the valve body 1 provides great convenience for maintenance. The lower valve cover 33 is connected with the valve body 1 by threads, which ensures the sealing and stability during normal operation. During shutdown for maintenance, the valve plate 3 does not need to be taken offline, and the lower valve cover 33 can be directly opened for manual cleaning. The operator can use special cleaning tools such as soft brushes and scrapers to thoroughly clean each corner inside the cavity of the valve body 1, remove accumulated impurities, sediments and possible foreign matter, or expose the blowhole by opening the external hex plug 2 during operation. The connection between the external hex plug 2 and the valve body 1 ensures the sealing during normal operation and facilitates quick opening when needed. The valve body 1 can be cleaned online by high-pressure water. The high-pressure water can flush the inside of the valve body 1 cavity with a large impact force, which can flush the impurities attached to the surface of the components and discharge them with the water flow. In this way, the valve body 1 cavity can be kept clean, effectively reducing the wear and corrosion of the internal components of the valve body 1. The reduction of impurities reduces the friction coefficient of the component surface, reduces material loss caused by friction, and also avoids corrosion damage caused by chemical reaction between corrosive impurities and component materials, significantly improves the service life of the valve body 1, reduces the maintenance cost and replacement frequency of the valve, and improves the operation reliability and economy of the entire system.

[0035] With reference to Figure 1 , Figure 2 and Figure 3 , the sealing assembly comprises a wear-resistant pad 27 fixedly connected to the inside of the valve body 1, a packing block 26 fixedly connected to the side wall of the wear-resistant pad 27, the packing block 26 being high-density graphite, a packing body 25 fixedly connected to the side wall of the packing block 26, the packing body 25 being low-density flexible graphite, and a compression coil 24 fixedly connected to the side wall of the packing body 25, the compression coil 24 being fixedly connected with a compression cover 23, and a disc spring being arranged between the compression coil 24 and the compression cover 23;

[0036] The wear-resistant pad 27 is made of a material with high strength and good wear resistance. It is first fixed tightly with the valve body 1. When the valve works, the fluid flowing in the valve body 1 will generate a certain pressure. The wear-resistant pad 27 can uniformly bear the fluid pressure, preventing the valve body 1 from being directly subjected to pressure and deformed or damaged. At the same time, the valve stem 15 will produce reciprocating motion when opening and closing, which will generate friction with the surrounding parts. The wear-resistant pad 27 can effectively reduce the damage of such friction to the valve body 1 and the valve stem 15, and play a preliminary protection role. Moreover, due to its close fit with the valve body 1, it can assist the subsequent sealing components to a certain extent and prevent fluid from leaking from the contact surface between it and the valve body 1, laying a foundation for the overall sealing effect. The filler body 25 is made of low-density flexible graphite material. This material has good flexibility and plasticity, and can be easily filled into the small gap between the valve stem 15 and the valve body 1 during valve assembly. Moreover, it can be moderately deformed when subjected to small pressure, better fitting the irregular shape of the surface of the valve stem 15, thereby effectively preventing fluid from leaking at the gap. The filler pad 26 is made of high-density graphite material. As a key component connecting the wear-resistant pad 27 and the filler body 25, on the one hand, due to its high density, it can withstand greater pressure without being easily deformed, and when the compression coil 24 and the gland 23 exert pressure, it stably transmits the pressure to the filler body 25, ensuring that the filler body 25 realizes the sealing function under appropriate pressure. On the other hand, it can also fill the gap between the valve stem 15 and the valve body 1 to a certain extent, working with the filler body 25 to improve the sealing effect. The angle difference between the filler combination enables the components to naturally form a compressed and extruded state during installation. This structural design further enhances the filling tightness of the filler in the gap between the valve stem 15 and the valve body 1, making the sealing more reliable and effectively preventing fluid leakage. The compression coil 24 and the gland 23 cooperate with each other. The gland 23 is fixed on the valve body 1 by a reliable connection method, providing a stable support frame for the entire sealing structure. The compression coil 24 exerts uniform and sufficient pressure on the filler body 25 under the action of the gland 23, making the filler body 25 tightly fit the valve stem 15. The disc spring arranged between them has excellent high-temperature resistance, wear resistance and stable elastic properties. The disc spring can provide continuous and stable pre-tightening force. During the operation of the valve, when the temperature rises, the valve stem 15 and the valve body 1 will change in size due to thermal expansion and contraction. The disc spring can automatically adjust its elastic force according to these changes, ensuring that the filler body 25 always tightly fits the valve stem 15 and compensates for the fluctuation of the sealing force caused by temperature changes. At the same time, in the long-term use process, when the sealing force of the filler body 25 decreases due to wear, the pre-tightening force of the disc spring can also be supplemented in time to maintain the stability of the sealing performance. Thus, the sealing performance of the valve is always reliable under different working conditions, whether in high-temperature or low-temperature environments, or in the case of long-term use and wear.Effectively guarantee the normal operation of the valve system, reduce the security risks and production efficiency caused by leakage and other problems.

[0037] Working principle: in the valve body 1 cleaning maintenance, the valve seat inside design has scraper structure, valve plate 3 in the valve body 1 open and close process, scraper structure can be attached to the valve plate 3 on the attached material scraping, make valve plate 3 always keep clean, avoid the influence of attached material on the sealing performance and switch operation of valve plate 3, valve seat inside spring cavity through adding O type Figure 4 , realize the sealing and dustproof function, effectively prevent black water medium into spring cavity, prevent the occurrence of fouling phenomenon, so as to ensure the stability of sealing performance and the smoothness of valve plate 3 switch, the bottom of valve body 1 lower valve cover 33 provides the convenience for maintenance, when shutdown and overhaul, without taking valve plate 3 offline, can directly open lower valve cover 33 for manual cleaning, or in the running process, open the outer hexagonal plug 2 to expose the blowhole, through the high pressure water online cleaning, keep the valve body 1 cavity clean, reduce the wear and corrosion of impurities on the internal components of valve body 1, significantly improve the service life of valve body 1.

[0038] The wear-resistant pad 27 is firstly fixed with the valve body 1, bears the friction generated by the fluid pressure and the valve rod 15 movement, plays a preliminary protection and sealing auxiliary role, the filler body 25 is low density flexible graphite, the filler pad 26 is high density graphite, the filler combination is designed with angle difference, the angle difference naturally forms compression and extrusion, its material and structure design can effectively fill the gap between the valve rod 15 and the valve body 1, the pressing roll 24 and the gland 23 apply pressure to the filler body 25, so that it is tightly attached to the valve rod 15, and the disc spring arranged between the two can provide continuous and stable pre-tightening force, compensate the sealing force change caused by temperature change, wear and other factors, ensure that the sealing performance of the valve is always reliable under different working conditions.

[0039] Finally, it should be pointed out that: the above described only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A quench water pump inlet and outlet sliding plate valve, comprising a valve body (1), characterized in that: The valve body (1) is internally threaded with an external hexagonal plug (2). The valve body (1) is internally provided with a valve stem (15). The valve stem (15) is fixedly connected with a sliding sleeve (14) on its side wall. The sliding sleeve (14) is fixedly connected with a valve plate (3) on its side wall. The valve body (1) is internally provided with a cleaning assembly. The valve body (1) is fixedly connected with an upper valve seat (8) on its side wall. The valve body (1) is fixedly connected with a lower valve seat (9) on its side wall. The valve body (1) is internally provided with a sealing ring (7). The sealing ring (7) is fixedly connected between the upper valve seat (8) and the lower valve seat (9) on its side wall. The valve body (1) is internally provided with a sealing assembly. The cleaning assembly includes a spring frame (6), the side wall of which is fixedly connected to the inside of the valve body (1). A column spring outer diameter ring (5) is fixedly connected to the side wall of the spring frame (6). An O-ring (4) is fixedly connected to the side wall of the column spring outer diameter ring (5). An O-ring outer diameter (10) is provided inside the valve body (1). A cylindrical head screw (31) is threaded inside the valve body (1). A lower valve cover (33) is provided inside the valve body (1). A sealing gasket (32) is fixedly connected to the side wall of the lower valve cover (33).

2. The inlet and outlet sliding plate valve of a quench water pump according to claim 1, characterized in that: The sealing assembly includes a wear-resistant pad (27), the sidewall of which is fixedly connected inside the valve body (1).

3. The inlet and outlet slide valve of a quench water pump according to claim 2, characterized in that: The wear-resistant pad (27) is fixedly connected to a filler block (26) on its side wall, and the filler block (26) is fixedly connected to a filler body (25) on its side wall.

4. The inlet and outlet slide valve of a quench water pump according to claim 3, characterized in that: A pressure roll (24) is fixedly connected to the side wall of the packing body (25), and a pressure cap (23) is fixedly connected to the side wall of the pressure roll (24). A disc spring is provided between the pressure roll (24) and the pressure cap (23).

5. The inlet and outlet sliding plate valve of a quench water pump according to claim 1, characterized in that: The valve body (1) is fixedly connected to the side wall of the valve cover body (16), and the valve cover body (16) is internally threaded with a threaded screw three (29). The side wall of the threaded screw three (29) is threaded with an external hexagonal nut (28), and the valve cover body (16) is internally provided with a metal spiral wound gasket two (30).

6. The inlet and outlet sliding plate valve of a quench water pump according to claim 1, characterized in that: The valve body (1) is internally threaded with a fully threaded screw (18), and the side wall of the fully threaded screw (18) is threaded with a hexagonal nut (17).

7. The inlet and outlet sliding plate valve of a quench water pump according to claim 1, characterized in that: The valve body (1) is internally threaded with a full-threaded screw (20), the side wall of the full-threaded screw (20) is threaded with a spring washer (21), and the side wall of the full-threaded screw (20) is threaded with a hexagonal nut (19).

8. The inlet and outlet slide valve of a quench water pump according to claim 1, characterized in that: The sliding sleeve (14) has an internal hexagonal socket (11) threaded connection. The valve body (1) has a metal spiral wound gasket (12) inside. The valve body (1) has a guide pin (13) inside. The valve body (1) has an actuator (22) inside.

Images