CN211231751U

CN211231751U - Pressure regulating valve for plunger pump

Info

Publication number: CN211231751U
Application number: CN201922333818.6U
Authority: CN
Inventors: 吕鸣; 杨红有; 廖魁; 汪建; 廖应民
Original assignee: Suzhou Agricultural Chemicals Machinery Co ltd
Current assignee: Suzhou Agricultural Chemicals Machinery Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-11
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses an air-vent valve for plunger pump, which comprises a valve body, a valve seat, the valve cap, the slider, a spring, the ball seat, the valve ball, hand wheel and spheroid, the disk seat is pegged graft in the one end of valve body, the other end at the valve body is installed to the valve cap, be provided with in the disk seat with the inside communicating inhalant canal of valve body, be provided with on the valve body with the inside communicating return water joint of valve body, the slider slides and sets up in the valve cap, the ball seat sets up in the valve body, the one end of spring is supported and is leaned on the ball seat, the other end of spring supports and leans on the slider, the valve ball sets up between ball seat and disk seat, the export that inhala. The utility model provides an air-vent valve for plunger pump alleviates the frictional force with the slider when hand wheel rotates through the spheroid, makes the hand wheel rotate smoothly, and the operation of being convenient for also is convenient for the pressure of accurate control air-vent valve.

Description

Pressure regulating valve for plunger pump

Technical Field

The utility model relates to an air-vent valve especially relates to an air-vent valve for plunger pump.

Background

In a washer for decontamination, it is necessary to pump the disinfectant mixture solution through a plunger. The plunger pump in the existing market carries out the pressure release through conventional air-vent valve and reaches the purpose of pressure regulating. The existing regulating valve is a ball valve and comprises a knob, a valve ball and a spring, wherein the spring is arranged between the knob and the valve ball, and when the pressure is regulated, the knob needs to be rotated to enable the knob to move up and down, so that the pressure of the spring on the valve ball is regulated. Because the end of the spring can be subjected to friction force when the knob rotates, the knob does not rotate smoothly, and the operation is affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an air-vent valve for plunger pump, its purpose is solved the hand wheel and is rotated unsmooth problem.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides an air-vent valve for plunger pump, includes valve body, disk seat, valve cap, slider, spring, ball seat, valve ball, hand wheel and spheroid, the disk seat is pegged graft the one end of valve body, the valve cap is installed the other end of valve body, be provided with in the disk seat with the inside communicating inhalant canal of valve body, be provided with on the valve body with the inside communicating return water joint of valve body, the slider slides and sets up in the valve cap, the ball seat sets up in the valve body, the one end of spring supports and leans on the ball seat, the other end of spring supports and leans on the slider, the valve ball sets up the ball seat with between the disk seat, the valve ball supports and leans on inhalant canal's export, the hand wheel runs through the valve cap is kept away from the one end of valve body, the spheroid sets up.

Preferably, a first slot for accommodating the ball body is formed in the hand wheel, and a second slot for accommodating the ball body is formed in the sliding block.

Preferably, the hand wheel includes a stem portion and a cap portion, one end of the stem portion being connected to the cap portion, the other end of the stem portion being located within the bonnet.

Preferably, the rod part is sleeved with a pressure limiting nut and a locking nut.

Preferably, an annular groove is formed in the side portion of the sliding block, and a first sealing ring and a soft check ring are arranged in the annular groove.

Preferably, the top end of the valve body is inserted into the valve cap, and a second sealing ring is arranged between the end part of the valve body and the valve cap.

Preferably, the valve further comprises a packaging cap, a flange is annularly arranged on the side portion of the valve seat, the bottom end of the valve body abuts against the flange, the packaging cap is sleeved on the valve seat, the top of the packaging cap abuts against the bottom end of the valve body, and the bottom end of the valve seat abuts against the inner wall of the packaging cap.

Preferably, a first extending member extending outwards is connected to the side of the packaging cap, a second extending member extending outwards is connected to the side of the valve body, and the first extending member and the second extending member are connected through screws.

Preferably, a third sealing ring is sleeved on the valve seat, and the third sealing ring is located below the flange.

Preferably, the ball seat is provided with a third slot for accommodating the valve ball.

The utility model has the advantages that: the utility model provides an air-vent valve for plunger pump alleviates the frictional force with the slider when hand wheel rotates through the spheroid, makes the hand wheel rotate smoothly, and the operation of being convenient for also is convenient for the pressure of accurate control air-vent valve.

Drawings

Fig. 1 is a schematic structural view of the present invention;

wherein: 1. the valve comprises a valve seat, a valve body, a valve cap, a handwheel, a rod part, a cap part, a ball body, a sliding block, a spring, a ball seat, a valve ball, a water inlet channel, a water return joint, a first groove, a second groove, a third groove, a pressure limiting nut, a locking nut, a soft retainer, a first sealing ring, a second sealing ring, a third sealing ring, a flange, a packing cap, a first extending part, a second extending part and a screw, wherein the valve seat is 2, the valve body is 3, the valve cap is 4, the handwheel is 401, the rod part is 402, the cap part is 5, the ball body is 6, the sliding block is.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the present embodiment provides a pressure regulating valve for a plunger pump, comprising a valve body 2, a valve seat 1, a valve cap 3, a slider 6, a spring 7, a ball seat 8, a valve ball 9, a hand wheel 4, a ball body 5 and a packing cap 22.

The valve seat 1 is inserted in the bottom end of the valve body 2, the bonnet 3 is installed on the top end of the valve body 2, and the top end of the valve body 2 is inserted in the bonnet 3. The valve seat 1 is internally provided with a water inlet passage 10 communicated with the interior of the valve body 2. The valve body 2 is provided with a water return joint 11 communicated with the interior of the valve body 2, and the water return joint 11 is perpendicular to the length direction of the valve body 2 and extends outwards. The water return joint 11 is screwed with the valve body 2.

The slider 6 is arranged in the valve cap 3 in a sliding way, and the ball seat 8 is arranged in the valve body 2. One end of the spring 7 abuts against the ball seat 8 and the other end of the spring 7 abuts against the slider 6. A valve ball 9 is arranged between the ball seat 8 and the valve seat 1, the valve ball 9 abutting against the outlet of the water inlet channel 10. The ball seat 8 is provided with a third slot 14 for receiving the ball 9 to prevent the ball 9 from being deviated. The hand wheel 4 penetrates through one end of the valve cap 3 far away from the valve body 2, and the ball body 5 is arranged between the hand wheel 4 and the sliding block 6. Be provided with the external screw thread on the hand wheel 4, the perforation inner wall in top of valve cap 3 is provided with the internal thread that matches with the external screw thread, when hand wheel 4 rotated, can slide along upper and lower direction to make slider 6 reciprocate through spheroid 5, with the pressure of adjustment spring 7 to ball seat 8 and valve ball 9, realize the purpose of adjusting the pressure of valve ball 9 to inhalant canal 10 export. Because the ball body 5 is arranged, the friction force received by the hand wheel 4 when the hand wheel rotates is small, so that the hand wheel rotates smoothly, and an operator can control the pressure accurately.

A first slot 12 for accommodating the ball 5 is formed in the hand wheel 4, and a second slot 13 for accommodating the ball 5 is formed in the slide block 6. The upper part of the ball 5 is located in the first slot 12 and the lower part of the ball 5 is located in the second slot 13, thus ensuring that the ball 5 does not deflect.

The hand wheel 4 includes a rod portion 401 and a cap portion 402, one end of the rod portion 401 is connected to the cap portion 402, and the other end of the rod portion 401 is located inside the bonnet 3. The cap 402 serves to facilitate operation of the operating handwheel 4. The rod part 401 is sleeved with a pressure limiting nut 15 and a locking nut 16. The pressure limiting nut 15 is used for limiting pressure, when the pressure limiting nut is abutted against the valve cap 3, the hand wheel 4 cannot descend continuously, the rod part 401 is prevented from retreating when the pressure regulating valve works, and the pressure of the spring 7 on the ball seat 8 and the valve ball 9 is reduced, so that the system pressure is reduced.

The lateral part ring of disk seat 1 is equipped with flange 21, and the bottom of valve body 2 supports and leans on flange 21, and packaging cap 22 cover is established on disk seat 1, and the top of packaging cap 22 supports and leans on the bottom of valve body 2, and the bottom of disk seat 1 supports and leans on the inner wall of packaging cap 22. A first extension 24 extending outwardly is connected to the side of the packing cap 22 and a second extension 23 extending outwardly is connected to the side of the valve body 2. The first extension piece 24 and the second extension piece 23 are connected by means of screws 25, thus ensuring easy disassembly of the packaging cap 22. The packing cap 22 presses the valve seat 1 to secure the valve seat 1. The packing cap 22 functions to seal the valve seat 1 when the pressure regulating valve for a plunger pump is not in use. When the pressure regulating valve for a plunger pump is used, the packing cap 22 needs to be removed and then attached to the plunger pump.

In order to improve the sealing performance, as a further preferable mode of the above technical solution, an annular groove is formed at a side portion of the slider 6, and a first sealing ring 18 and a soft retainer ring 17 are disposed in the annular groove. A second sealing ring 19 is arranged between the end of the valve body 2 and the bonnet 3. The valve seat 1 is sleeved with a third sealing ring 20, and the third sealing ring 20 is positioned below the flange 21.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. The pressure regulating valve for the plunger pump is characterized by comprising a valve body (2), a valve seat (1), a valve bonnet (3), a sliding block (6), a spring (7), a ball seat (8), a valve ball (9), a hand wheel (4) and a ball body (5), wherein the valve seat (1) is inserted into one end of the valve body (2), the valve bonnet (3) is installed at the other end of the valve body (2), a water inlet passage (10) communicated with the inside of the valve body (2) is arranged in the valve seat (1), a water return joint (11) communicated with the inside of the valve body (2) is arranged on the valve body (2), the sliding block (6) is arranged in the valve bonnet (3) in a sliding manner, the ball seat (8) is arranged in the valve body (2), one end of the spring (7) is abutted against the ball seat (8), the other end of the spring (7) is abutted against the sliding block (6, valve ball (9) set up ball seat (8) with between valve seat (1), valve ball (9) support and lean on the export of inhalant canal (10), hand wheel (4) run through valve cap (3) are kept away from the one end of valve body (2), spheroid (5) set up between hand wheel (4) and slider (6).

2. The pressure regulating valve for the plunger pump according to claim 1, characterized in that a first slot (12) for accommodating the ball (5) is opened on the hand wheel (4), and a second slot (13) for accommodating the ball (5) is opened on the slide block (6).

3. The pressure regulating valve for a plunger pump according to claim 1 or 2, characterized in that the hand wheel (4) comprises a rod portion (401) and a cap portion (402), one end of the rod portion (401) is connected with the cap portion (402), and the other end of the rod portion (401) is located inside the valve cap (3).

4. Pressure regulating valve for a plunger pump according to claim 3, characterized in that the rod (401) is sleeved with a pressure limiting nut (15) and a locking nut (16).

5. The pressure regulating valve for a plunger pump according to claim 1, characterized in that the side of the slider (6) is provided with an annular groove, and a first sealing ring (18) and a soft retainer ring (17) are arranged in the annular groove.

6. The pressure regulating valve for a plunger pump according to claim 1, characterized in that the top end of the valve body (2) is inserted into the valve cap (3), and a second sealing ring (19) is arranged between the end of the valve body (2) and the valve cap (3).

7. The pressure regulating valve for a plunger pump according to claim 1, further comprising a packaging cap (22), wherein a flange (21) is annularly arranged on the side part of the valve seat (1), the bottom end of the valve body (2) abuts against the flange (21), the packaging cap (22) is sleeved on the valve seat (1), the top part of the packaging cap (22) abuts against the bottom end of the valve body (2), and the bottom end of the valve seat (1) abuts against the inner wall of the packaging cap (22).

8. The pressure regulating valve for a plunger pump according to claim 7, characterized in that a first extension piece (24) extending outward is connected to a side of said packing cap (22), a second extension piece (23) extending outward is connected to a side of said valve body (2), and said first extension piece (24) and said second extension piece (23) are connected by a screw (25).

9. Pressure regulating valve for a plunger pump according to claim 7 or 8, characterized in that a third sealing ring (20) is sleeved on the valve seat (1), the third sealing ring (20) being located below the flange (21).

10. The pressure regulating valve for a plunger pump according to claim 1, characterized in that said ball seat (8) is provided with a third slot (14) for receiving said valve ball (9).