Injection pump for water quality on-line analyzer

Abstract

The utility model relates to an injection pump for a water quality on-line analyzer. The injection pump comprises a rectangular hollow shell main body, an injection driving component and an injector component, wherein the injection driving component is arranged in the middle in the shell main body, one end of an output end of the injection driving component penetrates through the shell main body, and the injector component is arranged at one end, outside the shell main body, of the output end of the injection driving component; the injector assembly is connected with the output end of the injection driving assembly through the quick fixing assembly; the output end of the injection driving assembly is provided with an arc-shaped groove attached to the pushing end of the injector assembly. A long-strip-shaped sliding opening facilitating sliding of the output end of the injection driving assembly is formed in the middle of the side wall of one side in the length direction of the shell body. The arc-shaped groove is formed in the output end of the injection driving assembly, so that the contact mode of the propelling end of the injector assembly and the output end of the injection driving assembly is changed into surface contact from line contact, the stability of the propelling end of the injector assembly is improved, and rapid installation and convenient maintenance are achieved through the rapid fixing assembly.

Description

Technical Field

[0001] The utility model relates to the field of injection pumps, in particular to an injection pump for an online water quality analyzer. Background Art

[0002] At present, the injection pump mainly used for wastewater sampling in sewage treatment, such as the prior art 201220580506.0, discloses a injection pump, but the contact between its injection propulsion device and the transmission block is line contact and is fixed by bolts. Not only is the installation cumbersome, but long-term use may cause deviation, resulting in failure of normal sampling. Utility Model Content

[0003] The utility model aims to provide a syringe pump for a water quality online analyzer in order to overcome the deficiencies of the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an injection pump for an online water quality analyzer, comprising a rectangular hollow shell body, an injection drive assembly arranged in the middle of the shell body and one end of the output end passes through the shell body, and a syringe assembly arranged on the output end of the injection drive assembly at the end outside the shell body; the syringe assembly is connected to the output end of the injection drive assembly through a quick fixing assembly; an arc groove that fits with the propulsion end of the syringe assembly is arranged on the output end of the injection drive assembly; a long sliding opening that facilitates the sliding of the output end of the injection drive assembly is arranged in the middle of the side wall on one side in the length direction of the shell body; the quick fixing assembly includes a pin groove horizontally arranged in the end of the injection drive assembly at the end outside the shell body and connected to the arc groove, a first spring arranged in the pin A spring, a limit pin with one end passing through the push end of the syringe assembly to the latch groove, a block groove vertically arranged below the latch groove and connected with the latch groove, a sealing block arranged at the bottom of the block groove for sealing the bottom of the block groove, a limit block telescopically arranged in the block groove and with the first end extending into the latch groove, a second spring arranged at the bottom of the block groove for pushing the limit block into the latch groove, a limit slot arranged at one end of the limit pin located in the latch groove for inserting the limit block, two toggle blocks respectively arranged on both sides of the limit block and respectively passing through both sides of one end of the output end of the injection drive assembly located outside the shell body to the outside, and an arc-shaped baffle arranged on the other end of the limit pin for preventing the push end of the syringe assembly from sliding on the limit pin; the limit block is located in the latch groove and has an end facing the latch groove opening with an inclined surface.

[0005] Preferably, the arc baffle sliding sleeve is arranged on one end of the limiting pin; the limiting pin is provided with a thread on one end of the arc baffle; the threaded end of the limiting pin is threadedly connected with a nut for adjusting the position of the nut arc baffle.

[0006] Preferably, the injection drive assembly includes a threaded rod vertically rotatably arranged in the middle of the shell body and placed along the length direction, a guide rod vertically arranged in the shell body and located on one side of the threaded rod, a driving block with one end threadedly connected to the threaded rod and the other end mounted on the guide rod through a bearing sleeve, and a driving motor arranged in the middle of the outer wall on one side in the width direction of the shell body for driving the threaded rod to rotate.

[0007] Preferably, the syringe assembly comprises a syringe body, an injection push rod with one end fixed in the arc groove by a quick fixing assembly and with a sealing ring and one end extending into the syringe body.

[0008] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0009] The utility model provides an arc groove on the output end of the injection drive assembly, thereby changing the contact form between the push end of the syringe assembly and the output end of the injection drive assembly from line contact to surface contact, thereby improving the stability of the push end of the syringe assembly, and realizing quick installation and convenient maintenance through a quick fixing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0011] Attached Figure 1 It is a schematic diagram of the overall structure of the injection pump for the online water quality analyzer described in the utility model;

[0012] Attached Figure 2 It is a schematic diagram of a partial cross-sectional structure of a syringe pump for an online water quality analyzer according to the utility model;

[0013] Attached Figure 3 The utility model is a syringe pump for the water quality online analyzer Figure 2 Schematic diagram of the local enlarged structure at A.

[0014] Among them: 1. Shell body; 2. Injection drive assembly; 21. Threaded rod; 22. Guide rod; 23. Drive block; 24. Drive motor; 3. Syringe assembly; 31. Syringe body; 32. Injection push rod; 4. Quick fixing assembly; 41. Pin slot; 42. First spring; 43. Limiting pin; 44. Block slot; 45. Limiting block; 46. Second spring; 47. Limiting slot; 48. Toggle block; 49. Arc baffle; 5. Arc slot; 6. Long slide; 7. Nut. DETAILED DESCRIPTION

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] Attached Figure 1-3The syringe pump for the water quality online analyzer described in the utility model comprises a rectangular hollow shell body 1, an injection drive component 2 arranged in the middle of the shell body 1 and one end of the output end of which penetrates the shell body 1, and a syringe component 3 arranged on the output end of the injection drive component 2 and located at one end outside the shell body 1; the syringe component 3 is connected to the output end of the injection drive component 2 through a quick fixing component 4; the output end of the injection drive component 2 is provided with an arc groove 5 that fits with the propulsion end of the syringe component 3; the middle part of the side wall of one side in the length direction of the shell body 1 is provided with a groove 5 that is convenient for the injection drive component 2 to output The quick fixing assembly 4 includes a latch groove 41 horizontally arranged at the output end of the injection drive assembly 2, which is located outside the outer end of the shell body 1 and connected to the arc groove, a first spring 42 arranged in the latch, a limit latch 43 with one end passing through the push end of the syringe assembly 3 to the latch groove 41, a block groove 44 vertically arranged below the latch groove 41 and connected to the latch groove 41, a sealing block arranged at the bottom of the block groove 44 for sealing the bottom of the block groove 44, a limit block 45 telescopically arranged in the block groove 44 and with the first end extending into the latch groove 41, and a limit block 45 arranged at the bottom of the block groove 44. A second spring 46 for pushing the limit card block 45 into the latch groove 41, a limit card groove 47 arranged at one end of the limit pin 43 located in the latch groove 41 for inserting the limit card block 45, two toggle blocks 48 respectively arranged on both sides of the limit card block 45 and respectively passing through both sides of one end of the output end of the injection drive component 2 located outside the shell body 1 to the outside, and an arc-shaped baffle 49 arranged on the other end of the limit pin 43 for preventing the push end of the syringe component 3 from sliding on the limit pin 43; one end of the limit card block 45 located in the latch groove 41 is directly opposite to the opening of the latch groove 41 and has an inclined surface; the injection drive The component 2 includes a threaded rod 21 which is vertically rotatably arranged in the middle of the shell body 1 and placed along the length direction, a guide rod 22 which is vertically arranged in the shell body 1 and located on one side of the threaded rod 21, a driving block 23 whose one end is threadedly connected to the threaded rod 21 and the other end is sleeved on the guide rod 22 through a bearing, and a driving motor 24 which is arranged in the middle of the outer wall on one side in the width direction of the shell body 1 and is used to drive the threaded rod 21 to rotate; the syringe component 3 includes a syringe body 31, an injection push rod 32 whose one end is fixed in the arc groove 5 through a quick fixing component 4 and has a sealing ring and the other end extends into the syringe body 31.

[0017] Furthermore, the arc baffle 49 is slidably sleeved on one end of the limit pin 43; the limit pin 43 is provided with a thread on one end of the arc baffle 49; the limit pin 43 has a threaded end on which a nut 7 for adjusting the position of the arc baffle 49 is threadedly connected, so as to facilitate adaptation to injection push rods 32 of different diameters.

[0018] During use: first, the driving motor 24 is activated, and the driving motor 24 drives the threaded rod 21 to rotate, and the threaded rod 21 drives the driving block 23 to move on the guide rod and the slide rail, and the end of the driving block located outside the shell body 1 drives the injection push rod 32 to move upward, and the injection push rod 32 cooperates with the syringe body 31 to suck the sewage to be sampled into the syringe body 31, and then the driving motor 24 is reversed to drive the injection push rod 32 to move downward, and the sewage in the syringe body 31 is injected into the analyzer. When it is necessary to disassemble the injection push rod 32 and the syringe body 31, first press the two toggle blocks 48 downward, and then the limit block 45 disengages from the limit slot 47, and then the limit pin 43 loses the limit of the limit block 45, and then the first spring 42 loses the resistance and resets Push the limit pin 43 to move toward the pin outlet, then pull out the limit pin 43, and then remove the injection push rod 32. During installation, first align the hole on one end of the injection push rod 32 with the pin slot 41 in the arc slot 5, and then insert one end of the limit pin 43 from the hole on one end of the injection push rod 32 into the pin slot 41. Since one side of the limit block 45 is an inclined surface, the limit pin 43 is squeezed into the block slot 44 when inserted. When the limit slot 47 on the limit pin 43 is connected to the block slot 44, the second spring 46 pushes the limit block 45 upward and inserts one end of the limit block 45 into the limit slot 47, thereby fixing the position of the limit pin 43. Then the limit pin 43 fixes the injection push rod 32 by cooperating with the arc baffle 49.

[0019] The above are only specific application examples of the utility model, and do not constitute any limitation on the protection scope of the utility model. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the utility model.

Claims

1. A syringe pump for a water quality online analyzer, characterized in that: It comprises a rectangular hollow shell body, an injection drive assembly arranged in the middle of the shell body and one end of the output end passes through the shell body, and a syringe assembly arranged on the end of the injection drive assembly outside the shell body; the syringe assembly is connected to the output end of the injection drive assembly through a quick fixing assembly; an arc groove that fits with the push end of the syringe assembly is arranged on the output end of the injection drive assembly; a long sliding opening is arranged in the middle of the side wall on one side of the length direction of the shell body to facilitate the sliding of the output end of the injection drive assembly; the quick fixing assembly comprises a pin groove horizontally arranged in the end of the injection drive assembly outside the shell body and connected to the arc groove, a first spring arranged in the pin, one end of which passes through the push end of the syringe assembly to the pin groove A limit latch inside, a block groove vertically arranged below the latch groove and connected with the latch groove, a sealing block arranged at the bottom of the block groove for sealing the bottom of the block groove, a limit block telescopically arranged in the block groove and with the first end extending into the latch groove, a second spring arranged at the bottom of the block groove for pushing the limit block into the latch groove, a limit slot arranged at one end of the limit latch located in the latch groove for inserting the limit block, two toggle blocks respectively arranged on both sides of the limit block and respectively passing through both sides of one end of the injection drive assembly output end located outside the shell body to the outside, and an arc-shaped baffle arranged on the other end of the limit latch for preventing the push end of the syringe assembly from sliding on the limit latch; the limit block is located in the latch groove and has an inclined surface on one side facing the latch groove opening.

2. The syringe pump for the water quality online analyzer according to claim 1, characterized in that: The arc baffle plate sliding sleeve is arranged on one end of the limit pin; the limit pin is provided with a thread on one end of the arc baffle plate; the limit pin has a threaded end on which a nut for adjusting the position of the nut arc baffle plate is threadedly connected.

3. The syringe pump for the water quality online analyzer according to claim 1, characterized in that: The injection drive assembly includes a threaded rod which is vertically rotatably arranged in the middle of the shell body and placed along the length direction, a guide rod which is vertically arranged in the shell body and located on one side of the threaded rod, a driving block with one end threadedly connected to the threaded rod and the other end mounted on the guide rod through a bearing sleeve, and a driving motor which is arranged in the middle of the outer wall on one side in the width direction of the shell body and is used to drive the threaded rod to rotate.

4. The syringe pump for the water quality online analyzer according to claim 1, characterized in that: The syringe assembly comprises a syringe body, an injection push rod with one end fixed in the arc groove through a quick fixing assembly and with a sealing ring and the other end extending into the syringe body.

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