CN115899293A - A gate valve with reduced sealing surface contact wear - Google Patents

Abstract

The invention discloses a gate valve for reducing contact wear of a sealing surface, wherein a filter screen mechanism is arranged in a water inlet area, a cleaning mechanism is arranged on the inner side of the filter screen mechanism, a water pressure and water flow detector is arranged in a water outlet area, the upper part of an upper valve body is connected with the bottom of an installation sleeve through a plurality of groups of fixing bolts, a protection box is arranged at the top of the installation sleeve, a control panel is arranged in the protection box, a driving mechanism is arranged on one side of the control panel and connected with a wear-resistant gate plate arranged in a valve seat, the wear-resistant gate plate comprises a gate plate body, the interior of the gate plate body is connected with the driving mechanism, a sealing sleeve is coated on the outer side of the gate plate body, a plurality of uniformly distributed annular tight binding grooves are formed in the sealing sleeve, and tight binding belts matched with the annular tight binding grooves are arranged in the annular tight binding grooves. This reduce sealed face contact wear's gate valve, this device has the seal cover through the cladding in the flashboard body outside for solving the problem that wearing and tearing easily appear in current gate valve flashboard in long-term use.

Description

A gate valve with reduced sealing surface contact wear

technical field

The invention relates to the technical field of gate valves, in particular to a gate valve which reduces contact wear on a sealing surface.

Background technique

The gate valve is a gate of the opening and closing part. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.

After searching, it is found that in the prior art, such as the publication number CN217482000U, a gate valve that can be opened and closed automatically includes a valve seat, a pipeline and a flange. The two ends of the valve seat are fixed with pipelines, and the outer circumference of the pipeline A flange is installed and fixed, the top of the valve seat is connected with an upper valve body, the outer wall of the upper valve body is welded and fixed with an arc-shaped plate, and the arc-shaped plate is installed and fixed with the valve seat by bolts, and the upper valve body An equipment frame is installed and fixed on the top of the body, and an opening and closing motor and a control box are installed and fixed inside the equipment frame. A horizontal bar is installed and fixed on the inner wall of the equipment frame, and a bearing seat is installed and fixed on the end of the horizontal bar. The inner periphery of the bearing seat is rotatably connected with a screw rod, and the screw rod extends to the inside of the upper valve body, and a gate plate is slidably connected in the upper valve body, and the gate plate is threadedly connected with the screw rod. It does not need manual operation, is easy to use, can remotely control the opening and closing of the gate valve, and has a high degree of automation.

The above-mentioned gate valve can remotely control the opening and closing motor, so as to realize the remote control of the opening and closing of the gate valve. However, the gate plate in the above-mentioned gate valve may be worn during long-term use, resulting in that the sealing performance cannot be guaranteed, and water leakage is prone to occur, causing Water leakage accidents have serious potential safety hazards. Therefore, a gate valve that reduces contact wear on the sealing surface is proposed to solve the above problems.

Contents of the invention

The object of the present invention is to provide a gate valve with reduced contact wear on the sealing surface, so as to solve the problem that the gate plate of the existing gate valve mentioned in the background art is prone to wear during long-term use.

In order to achieve the above object, the present invention provides the following technical solution: a gate valve that reduces the contact wear of the sealing surface, including a valve seat, the two sides inside the valve seat are divided into a water inlet area and a water outlet area, and the inside of the water inlet area is provided with A filter mechanism, and a cleaning mechanism is installed inside the filter mechanism, a water pressure and flow detector is installed inside the water outlet area, an upper valve body is connected to the top of the valve seat, and several sets of fixing bolts are connected to the top of the upper valve body. The bottom of the sleeve is connected, the top of the installation sleeve is provided with a protective box, and a control panel is installed inside the protective box, and a driving mechanism is installed on one side of the control panel, and the driving mechanism and the wear-resistant gate installed inside the valve seat The wear-resistant ram includes a ram body, and the inside of the ram body is connected to the driving mechanism. The outer side of the ram body is covered with a sealing sleeve, and the sealing sleeve is provided with a number of evenly distributed annular tight Tie groove, and the ring-shaped fastening groove is provided with a matching fastening belt.

Preferably, a communication groove is formed between the upper valve body and the installation sleeve, and the wear-resistant gate moves up and down inside the communication groove and the valve seat.

By adopting the above technical scheme, the movement of the wear-resistant flashboard is facilitated.

Preferably, the inside of the valve seat is provided with a tapered groove matching the wear-resistant gate, and the inner wall of the tapered groove is covered with a layer of emery wear-resistant coating, a magnet is installed under the tapered groove, and is wear-resistant Iron blocks matching the magnets are installed inside the gate.

By adopting the above technical scheme, the sealing performance of the connection between the bottom of the wear-resistant gate and the valve seat is improved.

Preferably, the inner walls of both sides of the upper valve body are symmetrically provided with installation grooves, and several groups of springs are arranged inside the installation grooves, and the other ends of the springs are connected to the sealing plate.

By adopting the above technical proposal, the sealing performance between the inner wall of the upper valve body and the wear-resistant flashboard is improved.

Preferably, the outside of the valve seat is covered with an anti-corrosion layer and a protective layer in sequence.

By adopting the above technical solution, the service life of the valve seat is extended.

Preferably, the filter mechanism includes a fixed ring matching the internal size of the water inlet area, the fixed ring is engaged with the inside of the water inlet area through a clamping block, and a filter screen is arranged inside the fixed ring, and the fixed ring A chute matching the cleaning mechanism is opened on the top, and a handle is installed on the outside of the chute.

By adopting the above technical scheme, the impurities in the fluid are filtered.

Preferably, the cleaning mechanism includes a micro motor, the micro motor is installed in the inner wall of the valve seat, and the output end of the micro motor is connected to the first helical gear through the first connecting rod, and the first helical gear is connected to the second helical gear The gears are meshed, and the second helical gear is connected with a second connecting rod. One end of the second connecting rod rotates in the support rod inside the valve seat, and the other end penetrates to the outside of the filter screen. The outside of the second connecting rod A limit block is set, and one end of the cleaning brush is fixed on the outside of the second connecting rod through a fixing nut and a limit block, the other end of the cleaning brush is provided with a slide block matching the chute, and the brush head in the cleaning brush is connected to the filter The net outside clings.

By adopting the above technical scheme, it is convenient to clean the filter screen.

Preferably, the drive mechanism includes a motor, and the output end of the motor is connected with a first gear, the first gear meshes with the second gear, and a threaded rod is connected inside the second gear, and one end of the threaded rod penetrates to the protective The outer side of the box is threadedly connected with the gate body.

By adopting the above technical scheme, it is convenient to drive the wear-resistant flashboard to move.

Preferably, the inside of the control panel is provided with a microcontroller module, a signal receiving module and a wireless transmission module, and the microcontroller module, the micro motor, the motor, the water pressure and flow detector, the signal receiving module and the wireless transmission module are all electrically connected. sexual connection.

By adopting the above technical scheme, it is convenient to remotely control the opening and closing of the wear-resistant gate.

Compared with the prior art, the beneficial effect of the present invention is: the gate valve which reduces the contact wear of the sealing surface,

(1) In order to solve the problem that the existing gate valve gate is prone to wear during long-term use, this device is covered with a sealing sleeve on the outside of the gate body, and the sealing sleeve is provided with a number of evenly distributed annular binding grooves. In addition, there is a matching tightening belt in the annular tightening groove. When the gate body moves, the surface of the gate body will rub against the tapered groove and the inner wall of the connecting groove. By covering the outer side of the gate body with a sealing sleeve , the existence of the sealing sleeve can be used as an anti-wear medium, replacing the friction between the outer surface of the gate body and the inner wall of the tapered groove and the connecting groove. The sealing sleeve is made of NBR, which has strong wear resistance, and D The rubber itself has a certain degree of elasticity, so that the rigid seal between the sealing sleeve and the tapered groove and the connecting groove is transformed into a soft sealing. This sealing method has a higher degree of sealing and is less prone to wear and tear. Uniformly distributed ring-shaped binding grooves. There are matching binding belts in the ring-shaped binding grooves. The binding belts are made of elastic material. The existence of the binding belts can share the force borne by the sealing sleeve when it is deformed, avoiding the occurrence of damage due to sealing Long-term deformation of the sleeve leads to elastic fatigue, which prolongs the service life of the sealing sleeve.

(2) In order to solve the problem of insufficient sealing when the gate plate of the existing gate valve is closed, a tapered groove matching the wear-resistant gate plate is provided inside the valve seat, and a magnet is installed under the tapered groove, which is wear-resistant. An iron block matching the magnet is installed inside the gate, and the wear-resistant gate is inserted into the tapered groove when it is closed, thereby improving the sealing between the bottom of the wear-resistant gate and the valve seat, and the magnet and the iron block are attracted to each other , so that the wear-resistant gate and the tapered groove are more firmly connected, thereby improving the sealing of the connection.

(3) In order to solve the problem that the existing gate valve is prone to clogging when filtering impurities in the fluid, a cleaning mechanism is installed inside the filter mechanism. When the filter is clogged, the micro motor is turned on to make the micro The motor drives the first connecting rod and the first helical gear to rotate, so that the second helical gear rotates, and drives the second connecting rod to rotate synchronously. Under the action of the rotation of the second connecting rod, the cleaning brush rotates on the outside of the filter screen , Brush the filter to remove the blockage.

(4) In order to solve the problem that the abnormality inside the existing gate valve cannot be understood in time, the device installs a water pressure and flow detector inside the water outlet area. It is transmitted to the inside of the microcontroller module, and the microcontroller module controls the wireless transmission module to transmit the signal to the remote terminal. When there is an abnormality inside the gate valve, it is convenient for the terminal staff to know in time.

Description of drawings

Fig. 1 is the schematic diagram of the front view sectional structure of the present invention;

Fig. 2 is a schematic diagram of the three-dimensional structure of the present invention;

Fig. 3 is a structural schematic diagram of the positional relationship between the anticorrosion layer and the protective layer of the present invention;

Fig. 4 is a structural schematic diagram of the filter screen mechanism of the present invention;

Fig. 5 is a structural schematic diagram of the positional relationship between the filter screen mechanism and the cleaning mechanism of the present invention;

Figure 6 is a schematic diagram of the enlarged structure at A of the present invention;

Figure 7 is a schematic diagram of the enlarged structure at C of the present invention;

Fig. 8 is a schematic diagram of enlarged structure at B of the present invention;

Fig. 9 is a schematic diagram of the microcontroller control flow of the present invention.

In the figure: 1, valve seat; 101, tapered groove; 102, emery wear-resistant coating; 103, magnet; 2, water inlet area; 3, water outlet area; 4, filter mechanism; 401, fixed ring; 402, Block; 403, filter screen; 404, chute; 405, handle; 5, cleaning mechanism; 501, micro motor; 502, the first connecting rod; 503, the first helical gear; 504, the second helical gear; 505, 506, support rod; 507, cleaning brush; 6, water pressure water flow detector; 7, upper valve body; 701, spring; 702, sealing plate; 8, installation sleeve; 9, protective box; 10 , control panel; 11, drive mechanism; 111, motor; 112, first gear; 113, second gear; 114, threaded rod; 12, wear-resistant gate; 121, gate body; 122, sealing sleeve; 123, Tightening belt; 124, iron block; 13, connecting groove; 14, anticorrosion layer; 15, protective layer.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-9, the present invention provides a technical solution: a gate valve that reduces contact wear on the sealing surface, as shown in Figures 1-3, the two sides inside the valve seat 1 are divided into water inlet area 2 and water outlet area 3.

In a further embodiment, both ends of the water inlet area 2 and the water outlet area 3 are integrally formed with flanges, and the edges of the flanges are uniformly provided with several groups of connecting holes. By setting flanges at both ends of the valve seat 1, through The flange is connected with the external pipe body to make the connection tighter and the sealing performance better.

Specifically, the outer side of the valve seat 1 is covered with an anti-corrosion layer 14 and a protective layer 15 in sequence.

In a further embodiment, the anticorrosion layer 14 includes a titanium alloy coating, and the titanium alloy coating is in contact with the valve seat 1, and the outer side of the titanium alloy coating is sequentially covered with an epoxy resin layer and a polyvinyl chloride coating, and the protective layer 15 It includes an aluminum oxide coating, and the aluminum oxide coating is in contact with the polyvinyl chloride coating, and the outer side of the aluminum oxide coating is sequentially covered with a JS waterproof coating and an iron red alkyd antirust coating.

In a further embodiment, by covering the outer side of the valve seat 1 with an anti-corrosion layer 14, and the anti-corrosion layer 14 includes a polyvinyl chloride coating, an epoxy resin layer and a titanium alloy coating, three layers of anti-corrosion protection can be played, thereby Effectively improve the corrosion resistance of the valve seat 1 and prolong its service life. The protective layer 15 is coated on the outside of the anti-corrosion layer 14, and the protective layer 15 includes aluminum oxide coating, JS waterproof coating, and iron red alkyd anti-rust Coating, the iron red alkyd antirust coating can improve the overall rust resistance of the valve seat 1, the JS waterproof coating can improve the overall water resistance of the valve seat 1, thereby further improving its antirust effect, aluminum oxide coating The valve seat 1 can be protected against wear, thereby prolonging the service life of the outer shell.

As shown in Fig. 1 and Fig. 4-5, a filter mechanism 4 is installed inside the water inlet area 2, and a cleaning mechanism 5 is installed inside the filter mechanism 4, and a water pressure and flow detector 6 is installed inside the water outlet area 3.

Specifically, the filter mechanism 4 includes a fixed ring 401 that matches the internal size of the water inlet area 2, the fixed ring 401 is engaged with the inside of the water inlet area 2 through a clamping block 402, and a filter screen 403 is arranged inside the fixed ring 401, A chute 404 matching the cleaning mechanism 5 is opened on the fixing ring 401 , and a handle 405 is installed on the outside of the chute 404 .

In a further embodiment, the fixing ring 401 is engaged with the inside of the water inlet area 2 , and when the filter screen 403 needs to be replaced, the filter screen mechanism 4 can be taken out by holding the handle 405 .

Specifically, the cleaning mechanism 5 includes a micro motor 501, the micro motor 501 is installed in the inner wall of the valve seat 1, and the output end of the micro motor 501 is connected with the first helical gear 503 through the first connecting rod 502, and the first helical gear 503 is connected with the first helical gear 503. The two helical gears 504 are meshed, and the second helical gear 504 is internally connected with a second connecting rod 505. One end of the second connecting rod 505 rotates in the support rod 506 provided inside the valve seat 1, and the other end penetrates to the outside of the filter screen 403. The outside of the second connecting rod 505 is provided with a limit block, and one end of the cleaning brush 507 is fixed on the outside of the second connecting rod 505 by a fixing nut and a limit block, and the other end of the cleaning brush 507 is provided with a slide block matched with the chute 404, and The brush head in the cleaning brush 507 is closely attached to the outside of the filter screen 403 .

When the filter screen 403 is clogged, turn on the micro motor 501, so that the micro motor 501 drives the first connecting rod 502 and the first helical gear 503 to rotate, so that the second helical gear 504 rotates and drives the second connecting rod 505 to rotate Rotating synchronously, under the effect of the rotation of the second connecting rod 505, the cleaning brush 507 rotates outside the filter screen 403 to scrub the filter screen 403 and remove the blockage.

As shown in Figure 1-2 and Figure 8-9, the top of the valve seat 1 is connected to the upper valve body 7, and the top of the upper valve body 7 is connected to the bottom of the installation sleeve 8 through several sets of fixing bolts, and the top of the installation sleeve 8 is set There is a protective box 9, and a control panel 10 is installed inside the protective box 9.

In a further embodiment, the outer side of the protective box 9 is covered with an anti-corrosion layer 14 and a protective layer 15, and the top of the protective box 9 is provided with a door for later maintenance of the protective interior.

Specifically, a communication groove 13 is formed between the upper valve body 7 and the installation sleeve 8 , and the wear-resistant gate 12 moves up and down inside the communication groove 13 and the valve seat 1 .

Specifically, the inner walls of both sides of the upper valve body 7 are symmetrically provided with installation grooves, and several sets of springs 701 are arranged inside the installation grooves, and the other ends of the springs 701 are connected to the sealing plate 702 .

In a further embodiment, the spring 701 is in a compressed state. When the inner wall of the upper valve body 7 is worn, the sealing plate 702 is always in close contact with the wear-resistant gate plate 12 under the action of the reaction force of the spring 701, thereby reducing wear. Influence of contact tightness.

Specifically, the control panel 10 is provided with a microcontroller module, a signal receiving module and a wireless transmission module, and the microcontroller module, the micro motor 501, the motor 111, the water pressure and water flow detector 6, the signal receiving module and the wireless transmission module are all for electrical connection.

When in use, the signal receiving module receives the remote operation signal, and transmits the signal to the microcontroller module, and the microcontroller module controls the opening and closing of the micro motor 501 and the motor 111, and the water pressure and flow detector 6 is installed inside the water outlet area 3 , the water pressure and flow detector 6 detects the internal water pressure and flow rate of the gate valve in real time, and transmits the signal to the microcontroller module. The microcontroller module controls the wireless transmission module and transmits the signal to the remote terminal, which is convenient when there is an abnormality inside the gate valve Terminal staff keep abreast of it.

As shown in FIG. 1 and FIGS. 6-7 , a driving mechanism 11 is installed on one side of the control panel 10 , and the driving mechanism 11 is connected to the wear-resistant gate 12 provided inside the valve seat 1 .

Specifically, the driving mechanism 11 includes a motor 111, and the output end of the motor 111 is connected with a first gear 112, the first gear 112 meshes with the second gear 113, and the second gear 113 is internally connected with a threaded rod 114, one end of the threaded rod 114 It penetrates to the outside of the protective box 9 and is threadedly connected with the gate body 121 .

When in use, turn on the motor 111 and the first gear 112 rotates under the action of the motor 111, driving the second gear 113 and the threaded rod 114 to rotate synchronously. And the inside of the valve seat 1 moves up and down, and the opening and closing operation is performed on the inside of the gate valve.

Specifically, the wear-resistant ram 12 includes a ram body 121, and the inside of the ram body 121 is connected to the driving mechanism 11. The outer side of the ram body 121 is covered with a sealing sleeve 122, and the sealing sleeve 122 is provided with a number of evenly distributed annular rings. Tighten the groove, and the ring-shaped fastening groove is provided with a matching fastening belt 123.

In a further embodiment, when the gate body 121 moves, the surface of the gate body 121 will rub against the inner wall of the tapered groove 101 and the communication groove 13, and by coating the sealing sleeve 122 on the outside of the gate body 121, the sealing sleeve 122 The presence of N can be used as an anti-wear medium to replace the friction between the outer surface of the gate body 121 and the inner wall of the tapered groove 101 and the communication groove 13. The sealing sleeve 122 is made of NBR, which has extremely strong wear resistance, and Nitrile rubber itself has a certain degree of elasticity, so that the rigid seal between the sealing sleeve 122, the tapered groove 101 and the communication groove 13 is transformed into a soft seal. The sleeve 122 is provided with a number of evenly distributed annular tightening grooves, and the annular tightening groove is provided with matching tightening bands 123. The tightening bands 123 are made of elastic material. The existence of the tightening bands 123 can share the deformation of the sealing sleeve 122 The bearing force avoids elastic fatigue caused by the long-term deformation of the sealing sleeve 122 and prolongs the service life of the sealing sleeve 122 .

Specifically, the inside of the valve seat 1 is provided with a tapered groove 101 matching the wear-resistant gate 12, and the inner wall of the tapered groove 101 is covered with a layer of emery wear-resistant coating 102, and a magnet 103 is installed under the tapered groove 101. And the iron block 124 matched with the magnet 103 is installed inside the wear-resistant flashboard 12 .

When closing, the wear-resistant gate 12 is inserted into the inside of the tapered groove 101, thereby improving the sealing performance between the bottom of the wear-resistant gate 12 and the valve seat 1 when closing, and by coating the inner wall of the tapered groove 101 with a layer of emery wear-resistant coating layer 102, the corundum wear-resistant coating 102 can play a certain degree of wear-resistant protection to the inner wall of the tapered groove 101, and a magnet 103 is installed under the tapered groove 101 at the same time, and the magnet 103 and the iron block 124 are attracted to each other, so that the wear-resistant The grinding gate 12 is more firmly connected to the tapered groove 101, thereby improving the sealing performance of the joint.

The terms "center", "portrait", "landscape", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, and is only a simplified description for the convenience of describing the present invention, rather than indicating or implying that the referred device or element must have a specific orientation , are constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection content of the present invention.

Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a reduce sealed face contact wear's gate valve, includes disk seat (1), disk seat (1) inside both sides divide into intake zone (2) and play pool (3), intake zone (2) inside is provided with filter screen mechanism (4), and filter screen mechanism (4) inboard installs clean mechanism (5), play pool (3) internally mounted has water pressure rivers detector (6), disk seat (1) top is connected with valve body (7), and goes up valve body (7) top and be connected with installation sleeve (8) bottom through a plurality of groups fixing bolt, installation sleeve (8) top is provided with guard box (9), and guard box (9) internally mounted has control panel (10), actuating mechanism (11) are installed to control panel (10) one side, and actuating mechanism (11) are connected with wear-resisting (12) of disk seat (1) inside setting, its characterized in that: wear-resisting flashboard (12) include flashboard body (121), and flashboard body (121) inside is connected with actuating mechanism (11), the cladding of flashboard body (121) outside has seal cover (122), be equipped with a plurality of evenly distributed's annular on seal cover (122) and tightly tie up the groove, and the annular tightly tie up the inslot be equipped with rather than assorted and tightly tie up area (123).

2. A gate valve for reducing contact wear of a sealing surface according to claim 1, wherein: a communicating groove (13) is formed between the upper valve body (7) and the mounting sleeve (8), and the wear-resistant flashboard (12) moves up and down in the communicating groove (13) and the valve seat (1).

3. A gate valve for reducing contact wear of a sealing surface according to claim 1, wherein: the wear-resistant valve is characterized in that a conical groove (101) matched with the wear-resistant flashboard (12) is formed in the valve seat (1), the inner wall of the conical groove (101) is coated with a carborundum wear-resistant coating (102), a magnet (103) is installed below the conical groove (101), and an iron block (124) matched with the magnet (103) is installed inside the wear-resistant flashboard (12).

4. A gate valve for reducing contact wear of a sealing surface according to claim 1, wherein: the upper valve body (7) is characterized in that mounting grooves are symmetrically formed in the inner walls of two sides of the upper valve body, a plurality of groups of springs (701) are arranged inside the mounting grooves, and the other ends of the springs (701) are connected with the sealing plate (702).

5. The gate valve for reducing contact wear of a sealing surface according to claim 1, wherein: the outer side of the valve seat (1) is sequentially coated with an anticorrosive layer (14) and a protective layer (15).

6. A gate valve for reducing contact wear of a sealing surface according to claim 1, wherein: filter screen mechanism (4) include with intake district (2) inside dimension assorted solid fixed ring (401), gu fixed ring (401) are connected with intake district (2) inside block through fixture block (402), and gu fixed ring (401) is inside to be provided with filter screen (403), gu set up on fixed ring (401) with clean mechanism (5) assorted spout (404), and handle (405) are installed in spout (404) outside.

7. A gate valve for reducing contact wear of a sealing surface according to claim 6, wherein: cleaning mechanism (5) includes micro motor (501), micro motor (501) are installed in disk seat (1) inner wall, and micro motor (501) output is connected with first helical gear (503) through head rod (502), first helical gear (503) mesh with second helical gear (504), and second helical gear (504) internal connection has second connecting rod (505), bracing piece (506) internal rotation that second connecting rod (505) one end set up in disk seat (1), the other end run through to filter screen (403) outside, second connecting rod (505) outside is provided with the stopper, and cleaning brush (507) one end is fixed in second connecting rod (505) outside through fixation nut and stopper, cleaning brush (507) other end is provided with the slider with spout (404) assorted, and the brush head in cleaning brush (507) is hugged closely with the filter screen (403) outside.

8. The gate valve for reducing contact wear of a sealing surface according to claim 1, wherein: actuating mechanism (11) are including motor (111), and motor (111) output is connected with first gear (112), first gear (112) mesh mutually with second gear (113), and second gear (113) internal connection has threaded rod (114), threaded rod (114) one end runs through to guard box (9) outside and flashboard body (121) threaded connection.

9. The gate valve of claim 8, wherein the gate valve is configured to reduce contact wear of the sealing surface, and further comprises: the control panel (10) is internally provided with a microcontroller module, a signal receiving module and a wireless transmission module, and the microcontroller module is electrically connected with the micro motor (501), the motor (111), the water pressure and water flow detector (6), the signal receiving module and the wireless transmission module.

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