CN218440668U - Metering pump for sulfuric acid boiler - Google Patents

Abstract

The utility model discloses a metering pump for a sulfuric acid boiler, which comprises a pump body; a metering pump main body; the right port of the water inlet valve casing is communicated with the inlet of the metering pump main body by adopting a connecting pipe fitting, and the outer end part of the bottom port of the water inlet valve casing is fixedly provided with a valve cover; the limiting plate is sealed and fixedly arranged at the inner end part of the bottom port of the water inlet valve shell; the fixing base, the fixing base set up in the inner chamber of inlet valve casing, the fixed case that is provided with in top of fixing base, the bottom fixedly connected with valve rod's of fixing base top. The utility model discloses in the device, cancelled the mode of intaking of original ball valve structure, adopted the case that has the toper face to carry out flow control, simultaneously, utilize the threaded connection relation of screw rod and valve rod, control the case and upwards or bulldoze downwards to the feed amount of the fluid is adjusted better.

Description

Metering pump for sulfuric acid boiler

Technical Field

The utility model particularly relates to a measuring pump technical field specifically is a metering pump for sulphuric acid boiler.

Background

At present, liquid suction and drainage of metering pumps are realized by opening and closing inlet and outlet one-way valves, the diameter of a ball of a one-way ball valve is generally selected according to the flow of the metering pumps, the ball with small diameter is used for small flow, and the ball with large flow and large diameter is used for large flow.

In the prior art, the diameter of a ball of a metering pump inlet and outlet one-way ball valve is not more than 50mm at most, and practice proves that after the diameter of the ball exceeds 38mm, the diameter of a valve ball of the metering pump is not more than 38mm generally because the self weight of the ball is increased, the impact force on a valve seat is increased, and the service lives of the valve ball and the valve seat are greatly reduced, so that the diameter of the valve ball of the metering pump is not more than 38mm, and the metering pump is limited by the diameter of the ball when aiming at ultra-large flow, and the feeding amount of the metering pump cannot be met.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a metering pump for sulfuric acid boiler in order to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a metering pump for a sulfuric acid boiler comprises;

a metering pump main body;

the metering pump comprises a metering pump body, a water inlet valve shell, a valve cover and a valve rod, wherein a right port of the water inlet valve shell is communicated with an inlet of the metering pump body through a connecting pipe fitting;

the limiting plate is sealed and fixedly arranged at the inner end part of the bottom port of the water inlet valve shell;

the fixed seat is arranged in an inner cavity of the water inlet valve shell, the top end of the fixed seat is fixedly provided with a valve core, the bottom end of the fixed seat is fixedly connected with the top end of a valve rod, the bottom end of the valve rod penetrates through the middle hole of the limiting plate and extends out, and the valve rod can be pushed and pressed upwards to seal and block the inner end part of the top port of the water inlet valve shell under the action of thrust;

and the screw rod, the screw rod set up in the water inlet valve casing bottom port, the top of screw rod with valve rod bottom threaded connection, the bottom of screw rod is passed the valve gap and with roating seat fixed connection.

Further, as preferred, the bottom surface of valve gap is provided with interior limit groove, the top that is provided with the roating seat is rotated in the interior limit inslot matching, the fixed hand that is provided with is twisted the piece on the bottom surface of roating seat.

Further, as preferred, it has the clamping ring to match the gland on the top surface of limiting plate, the bottom surface of clamping ring is provided with the arrangement groove, the matching installs the sealing washer in the installation groove.

Preferably, the limiting plate has a central hole and a valve rod with rectangular cross sections.

Further, preferably, the edge of the top surface of the valve body is provided with a chamfer.

Further, preferably, a rubber ring gasket is arranged on the inner wall of the top port of the water inlet valve shell.

Further, preferably, a water inlet connecting flange is fixedly arranged at the outer end part of the top port of the water inlet valve shell.

The utility model adopts the above technique, compare with current technique and have following beneficial effect: the utility model discloses in the device, cancelled the mode of intaking of original ball valve structure, adopted the case that has the toper face to carry out flow control, simultaneously, utilize the threaded connection relation of screw rod and valve rod, control the case and upwards or bulldoze downwards to the feed amount of the fluid is adjusted better.

Drawings

FIG. 1 is a schematic view of a partial internal structure of a metering pump for a sulfuric acid boiler;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a schematic view of the connection between the valve rod and the screw rod in the metering pump for the sulfuric acid boiler.

In the figure: 1. a metering pump main body; 2. connecting pipe fittings; 3. a fixed seat; 4. a water inlet valve shell; 5. a water inlet connecting flange; 6. a valve core; 7. a limiting plate; 8. a valve stem; 9. a seal ring; 10. pressing a ring; 11. a valve cover; 12. a rotating base; 1201. a hand twisting block; 13. a screw.

Detailed Description

With reference to the drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below.

Example (b): referring to fig. 1-3, the present invention provides a technical solution: a metering pump for a sulfuric acid boiler comprises;

a metering pump main body 1;

the water inlet valve shell 4, the right port of the water inlet valve shell 4 is communicated with the inlet of the metering pump main body 1 by adopting a connecting pipe fitting 2, and the outer end part of the bottom port of the water inlet valve shell 4 is fixedly provided with a valve cover 11;

the limiting plate 7 is sealed and fixedly arranged at the inner end part of the bottom port of the water inlet valve shell 4;

the fixed seat 3 is arranged in an inner cavity of the water inlet valve shell 4, the top end of the fixed seat 3 is fixedly provided with the valve core 6, the bottom end of the fixed seat 3 is fixedly connected with the top end of the valve rod 8, the bottom end of the valve rod 8 penetrates through a middle hole of the limiting plate 7 and extends out, and the valve rod 8 can be pushed and pressed upwards to be plugged at the inner end part of the top port of the water inlet valve shell 4 in a sealing mode under the action of thrust;

the screw 13 is arranged in the bottom port of the water inlet valve shell 4, the top end of the screw 13 is in threaded connection with the bottom end of the valve rod 8, and the bottom end of the screw 13 penetrates through the valve cover 11 and is fixedly connected with the rotary seat 12;

specifically, the control valve member 6 is pushed up or down by the screw 13 and the valve rod 8 in a screw connection relationship.

In this embodiment, an inner limiting groove is formed in the bottom surface of the valve cover 11, the top end of the rotating seat 12 is rotatably arranged in the inner limiting groove in a matching manner, and a hand screwing block 1201 is fixedly arranged on the bottom surface of the rotating seat 12;

specifically, the inner limiting groove can limit the rotary base 12 to rotate only and cannot be removed.

In the embodiment, the top surface of the limiting plate 7 is provided with a pressing ring 10 in a matching and pressing manner, the bottom surface of the pressing ring 10 is provided with a placing groove, and a sealing ring 9 is installed in the installing groove in a matching manner;

specifically, the compression ring 10 and the limiting plate 7 are in a fixed relation, so that the sealing ring 9 is assembled, and the sealing performance of the valve rod and the limiting plate 7 during sliding is guaranteed.

In this embodiment, the cross-sections of the middle hole of the limiting plate 7 and the valve rod 8 are both rectangular for directional limitation, so that the valve rod can only move up and down along the axial direction of the valve rod.

In this embodiment, the edge of the top surface of the valve element 6 is chamfered to increase the sealing contact area.

In this embodiment, the inner wall of the top port of the water inlet valve casing 4 is provided with a rubber ring gasket.

In this embodiment, a water inlet connecting flange 5 is fixedly arranged at the outer end part of the top port of the water inlet valve shell 4.

When the concrete implementation, the utility model discloses the device adopts case 6 that has the conical surface to carry out flow control, simultaneously, utilizes the threaded connection relation of screw rod and valve rod, controls case 6 and upwards or bulldozes downwards to the feed volume of the fluid of better accent.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (7)

1. A metering pump for a sulfuric acid boiler is characterized by comprising a pump body;

a metering pump body (1);

the water inlet valve is characterized by comprising a water inlet valve shell (4), wherein a right port of the water inlet valve shell (4) is communicated with an inlet of the metering pump main body (1) through a connecting pipe fitting (2), and a valve cover (11) is fixedly installed at the outer end part of a bottom port of the water inlet valve shell (4);

the limiting plate (7) is sealed and fixedly arranged at the inner end part of the bottom port of the water inlet valve shell (4);

the water inlet valve comprises a fixed seat (3), the fixed seat (3) is arranged in an inner cavity of a water inlet valve shell (4), a valve core (6) is fixedly arranged at the top end of the fixed seat (3), the bottom end of the fixed seat (3) is fixedly connected with the top end of a valve rod (8), the bottom end of the valve rod (8) penetrates through a middle hole of a limiting plate (7) and extends out, and the valve rod (8) can be pushed and pressed upwards to seal and plug the inner end part of a top port of the water inlet valve shell (4) under the action of thrust;

and screw rod (13), screw rod (13) set up in inlet valve casing (4) bottom end mouth is intraoral, the top of screw rod (13) with valve rod (8) bottom end threaded connection, the bottom of screw rod (13) is passed valve gap (11) and with roating seat (12) fixed connection.

2. The metering pump for the sulfuric acid boiler as set forth in claim 1, wherein: the bottom surface of valve gap (11) is provided with interior limit groove, the top that is provided with roating seat (12) is rotated in the interior limit inslot matching, fixed hand of being provided with on the bottom surface of roating seat (12) is twisted piece (1201).

3. The metering pump for the sulfuric acid boiler as set forth in claim 1, wherein: the top surface of the limiting plate (7) is provided with a pressing ring (10) in a matched pressing mode, the bottom surface of the pressing ring (10) is provided with a placing groove, and a sealing ring (9) is installed in the placing groove in a matched mode.

4. The metering pump for the sulfuric acid boiler as set forth in claim 3, wherein: the cross sections of the middle hole of the limiting plate (7) and the valve rod (8) are rectangular.

5. The metering pump for the sulfuric acid boiler as set forth in claim 4, wherein: and the edge of the top surface of the valve core (6) is provided with a chamfer.

6. The metering pump for the sulfuric acid boiler as set forth in claim 5, wherein: and a rubber ring gasket is arranged on the inner wall of the top port of the water inlet valve shell (4).

7. The metering pump for the sulfuric acid boiler as set forth in claim 6, wherein: and a water inlet connecting flange (5) is fixedly arranged at the outer end part of the top port of the water inlet valve shell (4).

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