CN214738446U

CN214738446U - Control valve for municipal water supply

Info

Publication number: CN214738446U
Application number: CN202120792668.XU
Authority: CN
Inventors: 姜海良; 陈鑫
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-11-16
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses a control valve that municipal administration feedwater was used, including the control valve body, the control valve body includes disk seat, inlet tube and outlet pipe, has seted up the cavity on the disk seat, and the left end of inlet tube is fixed with the right side intercommunication of cavity, and the right-hand member of outlet pipe is fixed with the left side intercommunication of cavity, be equipped with in the cavity shutoff mechanism and with shutoff mechanism matched with pressure regulating mechanism, shutoff mechanism inlays on the top inner wall of cavity and is equipped with two rectangular pipes including setting up the carriage release lever in the cavity. The utility model relates to a rationally, be convenient for carry out the shutoff of sealing up to inlet tube and outlet pipe in step, reach the purpose of dual leak protection, compression spring's setting for the rubber seal all the time with the lateral wall in close contact with of cavity, improve the shutoff leakproofness, reduce the risk of leaking, and be convenient for adjust compression spring's compressive force size according to actual conditions, and then reach the reinforcing to the tightening force of rubber seal, improve seal stability, satisfy the user demand.

Description

Control valve for municipal water supply

Technical Field

The utility model relates to a control valve technical field especially relates to a control valve that municipal administration feedwater was used.

Background

The municipal water supply system is a system consisting of various structures and water transmission and distribution pipe networks for ensuring water use of cities, industrial and mining enterprises and the like, has the tasks of taking water from a water source, treating the water according to the requirement of a user on water quality, then conveying the water to a water using area, supplying the water to the user according to the water pressure required by the user, and needs to be provided with a control valve on a water supply pipeline for controlling the closing and opening of the water;

the relatively poor shortcoming of leakproofness when it exists and closes, and current control valve only carries out the shutoff to the one end of inlet tube when closing, and the synchronization of being not convenient for carries out shutoff simultaneously to inlet tube and outlet pipe, when the phenomenon of leaking appears in the one end of inlet tube, then can cause the pipeline whole to leak, does not possess dual leak protection's function, can not satisfy the user demand, therefore we have proposed a control valve that municipal water supply was used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects in the prior art and providing a control valve for municipal water supply.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a control valve for municipal water supply comprises a control valve body, wherein the control valve body comprises a valve seat, a water inlet pipe and a water outlet pipe, a cavity is formed in the valve seat, the left end of the water inlet pipe is communicated and fixed with the right side of the cavity, the right end of the water outlet pipe is communicated and fixed with the left side of the cavity, a plugging mechanism and a pressure regulating mechanism matched with the plugging mechanism are arranged in the cavity, the plugging mechanism comprises a moving rod arranged in the cavity, two rectangular pipes are embedded on the inner wall of the top of the cavity, positioning rods are fixedly connected to the two sides of the top of the moving rod respectively, the rectangular pipes are slidably sleeved on the corresponding positioning rods, a graduated scale is fixedly connected to one side of the top of the moving rod, the top of the graduated scale extends to the position above the valve seat, a pointer is fixedly connected to the top of the valve seat, scale marks are arranged on the front side of the graduated scale, the pointer is matched with the scale marks, and first rectangular boxes are movably contacted with the two ends of the moving rod respectively, one side, far away from each other, of each of the two first rectangular boxes is provided with an opening, a second rectangular box is sleeved on each first rectangular box in a sliding mode, one side, close to each other, of each of the two second rectangular boxes is provided with an opening, a compression spring in a compression state is fixedly connected between the inner wall, far away from each opening, of one side of each second rectangular box and the inner wall, far away from each opening, of the corresponding first rectangular box, a sealing rubber is fixedly bonded to one side, far away from each other, of each second rectangular box, one side, far away from each other, of each sealing rubber is respectively in movable contact with the inner walls of the two sides of the cavity, the sealing rubber on the left side of each sealing rubber is matched with the water outlet pipe, the sealing rubber on the right side of each sealing rubber is matched with the water inlet pipe, a first screw rod is rotatably mounted on the inner wall of the bottom of the cavity, the top end of each first screw rod extends to the position above the valve seat and is fixedly connected with a first knob, and the bottom of the movable rod is fixedly connected with a mounting block, the mounting block is sleeved on the first screw rod in a threaded manner;

the pressure regulating mechanism comprises rectangular grooves respectively formed in two ends of a moving rod, a rectangular rod is sleeved in the rectangular grooves in a sliding mode, one ends, far away from each other, of the two rectangular rods are fixedly connected with one sides, close to each other, of the two first rectangular boxes respectively, second screw rods are installed in the rectangular grooves in a rotating mode, the rectangular rods are sleeved on the corresponding second screw rods in a threaded mode, a first circular hole is formed in the top of the moving rod, one ends, close to each other, of the two second screw rods extend into the first circular hole and are fixedly connected with first bevel gears, the two first bevel gears are symmetrically arranged, the bottoms of the two first bevel gears are meshed with the same second bevel gear, a sleeve is installed in the first circular hole in a rotating mode, the second bevel gear is fixedly sleeved on the sleeve, the top end of the sleeve extends to the position above a valve seat and is fixedly connected with a second knob, the valve seat is movably sleeved on the sleeve in a sealing mode, and the sleeve is sleeved on the first screw rods, the second knob is located below the first knob.

Preferably, a second circular hole is formed in the inner wall of the right side of the cavity, a third circular hole is formed in the inner wall of the left side of the cavity, the inner wall of the second circular hole is fixedly connected with the outer side of the water inlet pipe, and the inner wall of the third circular hole is fixedly connected with the outer side of the water outlet pipe.

Preferably, a fourth circular hole is formed in the inner wall of the top of the cavity, a sealing ring is fixedly sleeved in the fourth circular hole, and the inner side of the sealing ring is in close contact with the outer side of the sleeve.

Preferably, a first rectangular hole is formed in the inner wall of the top of the cavity, a sealing rubber sheet is bonded and coated on the outer side of the graduated scale, and the outer side of the sealing rubber sheet is in movable contact with the inner wall of the first rectangular hole.

Preferably, the first circular hole is internally and fixedly sleeved with a first bearing and a second bearing, and the inner side of the inner ring of the first bearing and the inner side of the inner ring of the second bearing are fixedly connected with the outer side of the sleeve.

Preferably, a third bearing is fixedly connected between the top inner wall and the bottom inner wall of the rectangular groove, and the inner side of an inner ring of the third bearing is fixedly connected with the outer side of the corresponding second screw rod.

Preferably, the top and the bottom of first rectangle box have all been seted up the spacing groove, equal fixedly connected with stopper on the top inner wall of second rectangle box and the bottom inner wall, stopper and the spacing groove sliding connection who corresponds.

Preferably, the threaded grooves are formed in the ends, close to each other, of the two rectangular rods and are in threaded connection with the corresponding second screw rods, threaded holes are formed in the tops of the mounting blocks, and the threaded holes are in threaded connection with the first screw rods.

Preferably, a rotating groove is formed in the inner wall of the bottom of the cavity, a fourth bearing is fixedly sleeved in the rotating groove, the inner side of an inner ring of the fourth bearing is fixedly connected with the outer side of the first screw rod, and the inner wall of the sleeve is not in contact with the outer side of the first screw rod.

Preferably, the elastic force of the plurality of compression springs located in the same first rectangular box is larger than the impact force of the water pressure.

Compared with the prior art, the beneficial effects of the utility model are that:

when the water inlet pipe and the water outlet pipe are simultaneously plugged, a first knob is rotated in a forward direction to drive the first screw rod to rotate, the first screw rod rotates to drive the mounting block to move downwards, the mounting block sequentially drives the two sealing rubber sheets to move downwards through the movable rod, the two rectangular rods, the two first rectangular boxes and the two second rectangular boxes, the two sealing rubber sheets downwards respectively plug the water inlet pipe and the water outlet pipe, and simultaneously, under the elastic action of the compression spring, a tightening force is always applied to the sealing rubber sheets through the second rectangular boxes to enable the sealing rubber sheets to be always in close contact with the side walls of the cavity, the sealing performance of plugging is improved;

when the compression force of the compression spring is adjusted, the second knob is rotated in the forward direction to drive the second bevel gear to rotate through the sleeve, the second bevel gear drives the second screw rod to rotate through the two first bevel gears, the two second screw rods rotate to drive the two rectangular rods to move towards the direction away from each other, the rectangular rods drive the corresponding first rectangular boxes to slide in the second rectangular boxes and compress the compression spring, the compression degree of the compression spring is changed, the tightening force of the compression spring to the sealing rubber is increased, and when the compression force of the compression spring needs to be adjusted, the second knob stops rotating, and the adjustment is completed.

The utility model relates to a rationally, be convenient for carry out the shutoff of sealing up to inlet tube and outlet pipe in step, reach the purpose of dual leak protection, compression spring's setting for the rubber seal all the time with the lateral wall in close contact with of cavity, improve the shutoff leakproofness, reduce the risk of leaking, and be convenient for adjust compression spring's compressive force size according to actual conditions, and then reach the reinforcing to the tightening force of rubber seal, improve seal stability, satisfy the user demand.

Drawings

FIG. 1 is a schematic structural view of a control valve for municipal water supply according to the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure: the water-saving valve comprises a valve seat 100, a water inlet pipe 101, a water outlet pipe 102, a cavity 103, a movable rod 1, a rectangular pipe 2, a graduated scale 3, a positioning rod 4, a first screw rod 5, a sleeve 6, a first rectangular box 7, a second rectangular box 8, a sealing rubber sheet 9, a compression spring 10, a rectangular groove 11, a rectangular rod 12, a second screw rod 13, a first circular hole 14, a first bevel gear 15, a second bevel gear 16 and an installation block 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a control valve for municipal water supply comprises a control valve body, the control valve body comprises a valve seat 100, a water inlet pipe 101 and a water outlet pipe 102, a cavity 103 is formed on the valve seat 100, the left end of the water inlet pipe 101 is fixedly communicated with the right side of the cavity 103, the right end of the water outlet pipe 102 is fixedly communicated with the left side of the cavity 103, a plugging mechanism and a pressure regulating mechanism matched with the plugging mechanism are arranged in the cavity 103, the plugging mechanism comprises a movable rod 1 arranged in the cavity 103, two rectangular pipes 2 are embedded on the inner wall of the top of the cavity 103, positioning rods 4 are fixedly connected to both sides of the top of the movable rod 1, the rectangular pipes 2 are slidably sleeved on the corresponding positioning rods 4, a graduated scale 3 is fixedly connected to one side of the top of the movable rod 1, the top of the graduated scale 3 extends to the upper side of the valve seat 100, a pointer is fixedly connected to the top of the valve seat 100, and scale lines are arranged on the front side of the graduated scale 3, the pointer is matched with the scale marks, the two ends of the moving rod 1 are in movable contact with the first rectangular boxes 7, the sides, far away from each other, of the two first rectangular boxes 7 are both provided with openings, the first rectangular boxes 7 are slidably sleeved with the second rectangular boxes 8, the sides, close to each other, of the two second rectangular boxes 8 are both provided with openings, compression springs 10 in a compression state are fixedly connected between the inner walls, far away from the openings, of the second rectangular boxes 8 and the inner walls, far away from the openings, of the corresponding first rectangular boxes 7, the sealing rubber sheets 9 are fixedly bonded on the sides, far away from each other, of the two second rectangular boxes 8, the sides, far away from each other, of the two sealing rubber sheets 9 are respectively in movable contact with the inner walls, far away from each other, the sealing rubber sheets, located on the left side, of the two sealing rubber sheets 9 are matched with the water outlet pipe 102, the sealing rubber sheets 9 located on the right side are matched with the water inlet pipe 101, the inner wall, the bottom of the cavity 103 is rotatably provided with the first screw 5, the top end of the first screw rod 5 extends to the upper part of the valve seat 100 and is fixedly connected with a first knob, the bottom of the moving rod 1 is fixedly connected with an installation block 17, and the installation block 17 is sleeved on the first screw rod 5 in a threaded manner;

the pressure regulating mechanism comprises rectangular grooves 11 respectively arranged at two ends of a movable rod 1, a rectangular rod 12 is sleeved in the rectangular groove 11 in a sliding manner, one ends, far away from each other, of the two rectangular rods 12 are fixedly connected with one sides, close to each other, of two first rectangular boxes 7 respectively, second screw rods 13 are installed in the rectangular groove 11 in a rotating manner, the rectangular rods 12 are sleeved on the corresponding second screw rods 13 in a threaded manner, a first circular hole 14 is formed in the top of the movable rod 1, one ends, close to each other, of the two second screw rods 13 extend into the first circular hole 14 and are fixedly connected with first bevel gears 15, the two first bevel gears 15 are symmetrically arranged, the bottoms of the two first bevel gears 15 are meshed with the same second bevel gear 16, a sleeve 6 is installed in the first circular hole 14 in a rotating manner, the second bevel gears 16 are fixedly sleeved on the sleeve 6, the top end of the sleeve 6 extends to the upper side of a valve seat 100 and is fixedly connected with a second knob, the sealed movable sleeve of disk seat 100 is established on sleeve 6, and sleeve 6 cover is established on first screw rod 5, and the second knob is located the below of first knob, the utility model relates to a rationally, be convenient for carry out sealed shutoff to inlet tube 101 and outlet pipe 102 in step, reach the purpose of dual leak protection, compression spring 10's setting for rubber seal 9 all the time with the lateral wall in close contact with of cavity 103, improve the shutoff leakproofness, reduce the risk of leaking, and be convenient for adjust compression spring 10's compressive force size according to actual conditions, and then reach the reinforcing to rubber seal 9 tighten the power, improve seal stability, satisfy the user demand.

In the utility model, a second circular hole is arranged on the inner wall of the right side of the cavity 103, a third circular hole is arranged on the inner wall of the left side of the cavity 103, the inner wall of the second circular hole is fixedly connected with the outer side of the water inlet pipe 101, the inner wall of the third circular hole is fixedly connected with the outer side of the water outlet pipe 102, a fourth circular hole is arranged on the inner wall of the top of the cavity 103, a sealing ring is fixedly sleeved in the fourth circular hole, the inner side of the sealing ring is closely contacted with the outer side of the sleeve 6, a first rectangular hole is arranged on the inner wall of the top of the cavity 103, the outer side of the graduated scale 3 is bonded and coated with a sealing rubber sheet, the outer side of the sealing rubber sheet is movably contacted with the inner wall of the first rectangular hole, a first bearing and a second bearing are fixedly sleeved in the first circular hole 14, the inner side of the inner ring of the first bearing and the inner side of the inner ring of the second bearing are both fixedly connected with the outer side of the sleeve 6, and a third bearing is fixedly connected between the inner wall of the top and the bottom of the rectangular groove 11, the inner side of the inner ring of the third bearing is fixedly connected with the outer side of the corresponding second screw 13, the top and the bottom of the first rectangular box 7 are both provided with a limit groove, the inner wall of the top and the inner wall of the bottom of the second rectangular box 8 are both fixedly connected with limit blocks, the limit blocks are in sliding connection with the corresponding limit grooves, one ends of the two rectangular rods 12 close to each other are both provided with thread grooves, the thread grooves are in threaded connection with the corresponding second screw 13, the top of the mounting block 17 is provided with a threaded hole, the threaded hole is in threaded connection with the first screw 5, the inner wall of the bottom of the cavity 103 is provided with a rotating groove, a fourth bearing is fixedly sleeved in the rotating groove, the inner side of the inner ring of the fourth bearing is fixedly connected with the outer side of the first screw 5, the inner wall of the sleeve 6 is not in contact with the outer side of the first screw 5, and the elastic force of a plurality of compression springs 10 in the same first rectangular box 7 is larger than the impact force of water pressure, the utility model relates to a rationally, be convenient for carry out the sealed shutoff to inlet tube 101 and outlet pipe 102 in step, reach the purpose of dual leak protection, compression spring 10's setting for rubber seal 9 all the time with the lateral wall in close contact with of cavity 103, improve the shutoff leakproofness, reduce the risk of leaking, and be convenient for adjust compression spring 10's compressive force size according to actual conditions, and then reach the reinforcing to rubber seal 9 tighten the power, improve seal stability, satisfy the user demand.

The working principle is as follows: when the device is used, when the water inlet pipe 101 and the water outlet pipe 102 need to be plugged synchronously, the first knob is rotated in the forward direction, the first knob drives the first screw rod 5 to rotate, under the action of a threaded hole formed in the mounting block 17, the first screw rod 5 rotates to drive the mounting block 17 to move downwards, the mounting block 17 drives the movable rod 1 to move downwards, the movable rod 1 drives the two positioning rods 4 to respectively slide downwards in the corresponding rectangular pipes 2, meanwhile, the movable rod 1 drives the two rectangular rods 12 to move downwards, the movable rod 1 drives the sleeve 6 to move downwards through the first bearing and the second bearing, the rectangular rods 12 drive the corresponding first rectangular boxes 7 to move downwards, the first rectangular boxes 7 drive the corresponding second rectangular boxes 8 to move downwards, the second rectangular boxes 8 drive the corresponding sealing rubber sheets 9 to move downwards, the two sealing rubber sheets 9 move downwards and simultaneously plug the water inlet pipe 101 and the water outlet pipe 102 respectively, meanwhile, under the action of the elastic force of the compression spring 10, a tightening force is always applied to the sealing rubber sheet 9 through the second rectangular box 8, so that the sealing rubber sheet 9 is always in close contact with the side wall of the cavity 103, the sealing performance of plugging is improved, and the water inlet pipe 101 and the water outlet pipe 102 are plugged simultaneously, so that the double leakage prevention purpose is achieved, and the water leakage risk is reduced;

when the magnitude of the compression force of the compression spring 10 is adjusted according to actual needs, the second knob is rotated in the forward direction, the second knob drives the sleeve 6 to rotate, the sleeve 6 drives the second bevel gear 16 to rotate, the second bevel gear 16 drives the two first bevel gears 15 engaged with the second bevel gears to rotate, the first bevel gears 15 drive the corresponding second screw rods 13 to rotate, under the action of thread grooves formed in the rectangular rods 12, the two second screw rods 13 rotate to drive the two rectangular rods 12 to move in the direction away from each other, the rectangular rods 12 drive the corresponding first rectangular boxes 7 to slide in the second rectangular boxes 8, the first rectangular boxes 7 move in the direction away from the movable rod 1 and compress the corresponding compression springs 10, and along with the change of the compression degree of the compression springs 10, the tightening force of the compression springs 10 on the seal rubber 9 through the corresponding second rectangular boxes 8 is increased, when the compression force of the compression spring 10 is adjusted according to actual needs, the second knob stops rotating, and then adjustment is completed, so that the compression force of the compression spring 10 can be adjusted conveniently according to actual conditions, the tightening force of the sealing rubber sheet 9 is enhanced, and the sealing stability is improved.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A control valve for municipal water supply comprises a control valve body, wherein the control valve body comprises a valve seat (100), a water inlet pipe (101) and a water outlet pipe (102), a cavity (103) is formed in the valve seat (100), the left end of the water inlet pipe (101) is communicated and fixed with the right side of the cavity (103), the right end of the water outlet pipe (102) is communicated and fixed with the left side of the cavity (103), the control valve is characterized in that a plugging mechanism and a pressure regulating mechanism matched with the plugging mechanism are arranged in the cavity (103), the plugging mechanism comprises a movable rod (1) arranged in the cavity (103), two rectangular pipes (2) are embedded on the inner wall of the top of the cavity (103), positioning rods (4) are fixedly connected to two sides of the top of the movable rod (1), the rectangular pipes (2) are slidably sleeved on the corresponding positioning rods (4), a graduated scale (3) is fixedly connected to one side of the top of the movable rod (1), the top of the graduated scale (3) extends to the upper part of the valve seat (100), the top of the valve seat (100) is fixedly connected with a pointer, the front side of the graduated scale (3) is provided with scale marks, the pointer is matched with the scale marks, the two ends of the movable rod (1) are in movable contact with first rectangular boxes (7), the sides, far away from each other, of the two first rectangular boxes (7) are respectively provided with an opening, a second rectangular box (8) is sleeved on the first rectangular box (7) in a sliding manner, the sides, close to each other, of the two second rectangular boxes (8) are respectively provided with an opening, a compression spring (10) in a compression state is fixedly connected between the inner wall, far away from the opening, of one side of the second rectangular box (8) and the inner wall, far away from the opening, of the corresponding first rectangular box (7), of the other side of the two second rectangular boxes (8) are fixedly bonded with sealing rubber (9), one side, the two sides, far away from each other of the two sealing rubber (9) are respectively in movable contact with the inner walls of the two sides of the cavity (103), the sealing rubber positioned on the left side in the two sealing rubber (9) is matched with the water outlet pipe (102), the sealing rubber (9) positioned on the right side is matched with the water inlet pipe (101), the inner wall of the bottom of the cavity (103) is rotatably provided with a first screw rod (5), the top end of the first screw rod (5) extends to the position above the valve seat (100) and is fixedly connected with a first knob, the bottom of the moving rod (1) is fixedly connected with a mounting block (17), and the mounting block (17) is sleeved on the first screw rod (5) in a threaded manner;

the pressure regulating mechanism comprises rectangular grooves (11) respectively arranged at two ends of a movable rod (1), a rectangular rod (12) is sleeved in each rectangular groove (11) in a sliding mode, one end, far away from each other, of each rectangular rod (12) is fixedly connected with one side, close to each other, of each first rectangular box (7), a second screw (13) is installed in each rectangular groove (11) in a rotating mode, the rectangular rods (12) are sleeved on the corresponding second screws (13) in a threaded mode, a first circular hole (14) is formed in the top of the movable rod (1), one end, close to each other, of each second screw (13) extends into each first circular hole (14) and is fixedly connected with a first bevel gear (15), the two first bevel gears (15) are symmetrically arranged, the bottoms of the two first bevel gears (15) are meshed with the same second bevel gear (16), a sleeve (6) is installed in each first circular hole (14) in a rotating mode, the second bevel gear (16) is fixedly sleeved on the sleeve (6), the top end of the sleeve (6) extends to the upper part of the valve seat (100) and is fixedly connected with a second knob, the valve seat (100) is movably sleeved on the sleeve (6) in a sealing mode, the sleeve (6) is sleeved on the first screw rod (5), and the second knob is located below the first knob.

2. The control valve for municipal water supply according to claim 1, wherein a second circular hole is formed in the inner wall of the right side of the cavity (103), a third circular hole is formed in the inner wall of the left side of the cavity (103), the inner wall of the second circular hole is fixedly connected with the outer side of the water inlet pipe (101), and the inner wall of the third circular hole is fixedly connected with the outer side of the water outlet pipe (102).

3. The control valve for municipal water supply according to claim 1, wherein a fourth circular hole is formed in the top inner wall of the cavity (103), a sealing ring is fixedly sleeved in the fourth circular hole, and the inner side of the sealing ring is in close contact with the outer side of the sleeve (6).

4. The control valve for municipal water supply according to claim 1, wherein a first rectangular hole is formed in the top inner wall of the cavity (103), the outer side of the scale (3) is bonded and coated with a sealing rubber sheet, and the outer side of the sealing rubber sheet is in movable contact with the inner wall of the first rectangular hole.

5. The control valve for municipal water supply according to claim 1, characterized in that the first circular hole (14) is internally fixed with a first bearing and a second bearing, and the inner side of the inner ring of the first bearing and the inner side of the inner ring of the second bearing are fixedly connected with the outer side of the sleeve (6).

6. The control valve for municipal water supply according to claim 1, wherein a third bearing is fixedly connected between the top inner wall and the bottom inner wall of the rectangular groove (11), and the inner side of the inner ring of the third bearing is fixedly connected with the outer side of the corresponding second screw (13).

7. The control valve for municipal water supply according to claim 1, wherein the first rectangular box (7) is provided with a limiting groove at the top and the bottom, the second rectangular box (8) is fixedly connected with a limiting block at the top inner wall and the bottom inner wall, and the limiting blocks are slidably connected with the corresponding limiting grooves.

8. The control valve for municipal water supply according to claim 1, wherein the ends of the two rectangular rods (12) adjacent to each other are each provided with a threaded groove, the threaded grooves are in threaded connection with the corresponding second screws (13), and the top of the mounting block (17) is provided with a threaded hole, and the threaded hole is in threaded connection with the first screw (5).

9. The control valve for municipal water supply according to claim 1, wherein a rotating groove is formed in the bottom inner wall of the cavity (103), a fourth bearing is fixedly sleeved in the rotating groove, the inner side of the inner ring of the fourth bearing is fixedly connected with the outer side of the first screw (5), and the inner wall of the sleeve (6) is not in contact with the outer side of the first screw (5).

10. The control valve for municipal water supply according to claim 1, characterized in that the compression springs (10) located in the same first rectangular box (7) have a greater spring force than the impact of the water pressure.