CN211777866U

CN211777866U - Jet pump

Info

Publication number: CN211777866U
Application number: CN202020336779.5U
Authority: CN
Inventors: 任兵; 毛宁来; 江建华
Original assignee: Zhejiang Shimge Pump Co Ltd; Shimge Pump Industry Group Co Ltd
Current assignee: Zhejiang Shimge Pump Co Ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-10-27
Anticipated expiration: 2030-03-17

Abstract

The utility model relates to an injection pump solves the problem that does not set up the check valve and bring in the injection pump that prior art exists, the technical scheme of adoption: a check valve is disposed in the water inlet passage of the ejector. The method has the following effects: the check valve is additionally arranged in the ejector, the problems that a user separately purchases the check valve and additionally installs the check valve are solved, the user experience is improved, and the use reliability of the pump is improved.

Description

Jet pump

Technical Field

The present invention relates to an injection pump, and more particularly to an injection pump provided with an injector having a check valve.

Background

The existing injection pump comprises a shell, a pump main body (comprising an impeller, a guide vane matched with the impeller and an injector matched with the guide vane and the impeller) arranged in the shell, and an injector arranged on the pump main body, wherein the water inlet of the injector is matched with the water inlet in the shell, and when the injection pump is used, one end of a user is connected with one end of a pipeline to connect the water inlet in the shell. Since the existing jet pump is limited by its own structure (as shown in fig. 1 and 2, the space between the water inlet passage and the rear chamber of the jet pump is small and cannot accommodate the check valve), there is no space for installing the check valve. However, when the injection pump is used, the injection pump needs to be self-priming, and when the injection pump is used, the pump cavity needs to be filled with water firstly, and at this time, the pump cavity is difficult to fill with water without a check valve.

Disclosure of Invention

An object of the utility model is to solve the above-mentioned problem that prior art exists and provide an injection pump, add the check valve in the sprayer, reduce the user and purchase the check valve alone in addition and install the problem that the check valve exists additional, improve user experience and feel to improve the use reliability of pump.

The above technical purpose of the present invention is mainly solved by the following technical solutions: the utility model provides an injection pump, includes the casing that has water inlet and delivery port, sets up the pump main part in the casing, the pump main part include the impeller, with impeller complex stator, with impeller, stator complex sprayer, the water inlet of sprayer with water inlet intercommunication on the casing, its characterized in that set up the check valve in the inhalant canal of sprayer. The check valve is additionally arranged in the ejector, the problems that a user separately purchases the check valve and additionally installs the check valve are solved, the user experience is improved, and the use reliability of the pump is improved.

As further improvement and supplement to the above technical scheme, the utility model discloses a following technical measure: the main part profile of sprayer is the cuboid shape, inhalant canal on the sprayer cooperates with the back chamber in the sprayer, back chamber complex back cap position and stator clearance fit. In order to assemble the check valve smoothly and enable the ejector to be used normally, the space of a rear cavity (namely the space formed between a water inlet channel and a rear cover of the ejector and directly communicated with the water inlet channel) in the ejector is increased, the rear cavity space is increased in a mode that the position of the rear cover of the traditional ejector is pushed towards the direction of the guide vane, and most of the space between the rear cover and the guide vane on the traditional ejector forms the space of the rear cavity.

The sprayer comprises a front cover and a rear cover which are detachably connected, and the check valve is arranged at the connecting part of the front cover and the rear cover. The check valve is convenient, rapid and stable to assemble.

The spray tube in the injector is in the outside of back lid has the linkage segment, the linkage segment with the stator is connected, the tang of stator with the outer wall clearance fit of back lid. The structure of the ejector can well form the space between the rear cover and the guide vane into the space of a rear cavity in the jet pump, so that the check valve is convenient to assemble.

In order to prevent water leakage at the assembly position, a sealing ring is arranged between the check valve and the inner wall of the injector.

In order to form effectual location to the check valve, prevent that the check valve from breaking away from inhalant canal and being exited from the sprayer by rivers, the inner wall of sprayer sets up the tang, the outer end of check valve with the tang forms conflict cooperation.

The utility model discloses beneficial effect who has: 1. the check valve is additionally arranged in the ejector, the problems that a user separately purchases the check valve and additionally installs the check valve are solved, the user experience is improved, and the use reliability of the pump is improved. 2. The structure of the ejector can well form the space between the rear cover and the guide vane into the space of a rear cavity in the jet pump, so that the check valve is convenient to assemble. 3. The check valve sets up the connection position of protecgulum and back lid, such structure is favorable to convenient quick stable assembly check valve.

Drawings

Fig. 1 is a schematic structural diagram of the prior art to which the present invention relates.

Fig. 2 is a schematic diagram of one configuration of the ejector of fig. 1.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a schematic diagram of a construction of the ejector of fig. 3.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): as shown in fig. 3 and 4, an injection pump comprises a housing 1 having a water inlet 11 and a water outlet, and a pump body disposed in the housing, wherein the pump body comprises an impeller 2, a guide vane 3 matched with the impeller, and an injector 4 matched with the impeller and the guide vane, a water inlet 41 of the injector is communicated with a water inlet on the housing, and a check valve 5 is disposed in a water inlet channel of the injector. The check valve is additionally arranged in the ejector, the problems that a user separately purchases the check valve and additionally installs the check valve are solved, the user experience is improved, and the use reliability of the pump is improved.

The main part of sprayer (be the back lid 43 and the protecgulum 44 that combine together) is the cuboid shape, inhalant canal on the sprayer cooperates with the back chamber in the sprayer, back chamber complex back lid position and stator clearance fit. In order to assemble the check valve smoothly and enable the ejector to be used normally, the space of a rear cavity (namely the space formed between a water inlet channel and a rear cover of the ejector and directly communicated with the water inlet channel) in the ejector is increased, the rear cavity space is increased in a mode that the position of the rear cover of the traditional ejector is pushed towards the direction of the guide vane, and most of the space between the rear cover and the guide vane on the traditional ejector forms the space of the rear cavity.

The sprayer comprises a front cover 44 and a rear cover 43 which are detachably connected, and the check valve is arranged at the connecting part of the front cover and the rear cover. The check valve is convenient, rapid and stable to assemble.

The spray pipe 45 in the injector is arranged on the outer side of the rear cover and is provided with a connecting section, the connecting section is connected with the guide vane, and a spigot of the guide vane is in clearance fit with the outer wall of the rear cover. The structure of the ejector can well form the space between the rear cover and the guide vane into the space of a rear cavity in the jet pump, so that the check valve is convenient to assemble.

In order to prevent water leakage at the assembly site, a sealing ring 6 is provided between the check valve and the inner wall of the injector.

In order to provide an effective location for the check valve and to prevent the check valve from being released from the inlet channel and being withdrawn from the injector by the water flow, the inner wall of the injector (i.e. the inner wall of the front cover at the inlet channel) is provided with a spigot 47, with which the outer end of the check valve forms an interference fit.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. In the above embodiments, the present invention may be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an injection pump, includes the casing that has water inlet and delivery port, sets up the pump main part in the casing, the pump main part include the impeller, with impeller complex stator, with impeller, stator complex sprayer, the water inlet of sprayer with water inlet intercommunication on the casing, its characterized in that set up the check valve in the inhalant canal of sprayer.

2. The injection pump of claim 1, wherein the main body of the injector is rectangular, the water inlet channel of the injector is matched with the rear cavity of the injector, and the rear cavity matched with the rear cover is in clearance fit with the guide vane.

3. An injection pump according to claim 1 or 2, wherein said injector comprises a front cover and a rear cover which are detachably coupled, and said check valve is provided at a coupling portion of said front cover and said rear cover.

4. An injection pump according to claim 3, characterized in that the nozzle tube in the injector has a connecting section on the outside of the rear cover, which connecting section is connected to the guide vane, the spigot of which guide vane is in clearance fit with the outer wall of the rear cover.

5. An injection pump according to claim 1 or 2, wherein a sealing ring is provided between the non-return valve and the inner wall of the injector.

6. An injection pump according to claim 4, wherein a sealing ring is provided between the check valve and the inner wall of the injector.

7. An injection pump according to claim 3, wherein the inner wall of the injector is provided with a spigot and the outer end of the check valve forms an interference fit with the spigot.

8. An injection pump according to claim 6, wherein the inner wall of the injector is provided with a spigot and the outer end of the check valve forms an interference fit with the spigot.